From 58a7785ebfc6a5d3dd0107091217fa2f9568b2c6 Mon Sep 17 00:00:00 2001 From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com> Date: Thu, 23 Feb 2023 02:28:32 +0000 Subject: [PATCH] Bump golang.org/x/text from 0.3.2 to 0.3.8 Bumps [golang.org/x/text](https://github.com/golang/text) from 0.3.2 to 0.3.8. - [Release notes](https://github.com/golang/text/releases) - [Commits](https://github.com/golang/text/compare/v0.3.2...v0.3.8) --- updated-dependencies: - dependency-name: golang.org/x/text dependency-type: direct:production ... Signed-off-by: dependabot[bot] --- go.mod | 4 +- go.sum | 35 +- vendor/golang.org/x/mod/LICENSE | 27 + vendor/golang.org/x/mod/PATENTS | 22 + .../{tools/internal => mod}/semver/semver.go | 37 +- vendor/golang.org/x/sys/LICENSE | 27 + vendor/golang.org/x/sys/PATENTS | 22 + vendor/golang.org/x/sys/execabs/execabs.go | 102 ++ .../golang.org/x/sys/execabs/execabs_go118.go | 12 + .../golang.org/x/sys/execabs/execabs_go119.go | 15 + vendor/golang.org/x/text/AUTHORS | 3 - vendor/golang.org/x/text/CONTRIBUTORS | 3 - .../text/encoding/internal/identifier/mib.go | 8 + .../x/text/encoding/unicode/unicode.go | 94 +- .../internal/utf8internal/utf8internal.go | 2 +- .../golang.org/x/text/transform/transform.go | 6 +- vendor/golang.org/x/tools/AUTHORS | 3 - vendor/golang.org/x/tools/CONTRIBUTORS | 3 - .../x/tools/go/analysis/analysis.go | 33 +- .../x/tools/go/analysis/diagnostic.go | 4 + vendor/golang.org/x/tools/go/analysis/doc.go | 118 +- .../go/analysis/passes/inspect/inspect.go | 19 +- .../x/tools/go/analysis/validate.go | 42 +- .../x/tools/go/ast/astutil/enclosing.go | 49 +- .../x/tools/go/ast/astutil/imports.go | 12 +- .../x/tools/go/ast/astutil/rewrite.go | 17 +- .../golang.org/x/tools/go/ast/astutil/util.go | 4 + .../x/tools/go/ast/inspector/inspector.go | 10 +- .../x/tools/go/ast/inspector/typeof.go | 28 +- .../x/tools/go/buildutil/allpackages.go | 11 +- .../x/tools/go/buildutil/fakecontext.go | 5 +- .../x/tools/go/buildutil/overlay.go | 3 +- .../golang.org/x/tools/go/buildutil/tags.go | 7 +- .../golang.org/x/tools/go/buildutil/util.go | 3 - .../x/tools/go/gcexportdata/gcexportdata.go | 104 +- .../x/tools/go/gcexportdata/importer.go | 2 + .../x/tools/go/internal/gcimporter/bexport.go | 43 +- .../x/tools/go/internal/gcimporter/bimport.go | 52 +- .../go/internal/gcimporter/exportdata.go | 16 +- .../go/internal/gcimporter/gcimporter.go | 181 +- .../x/tools/go/internal/gcimporter/iexport.go | 405 ++++- .../x/tools/go/internal/gcimporter/iimport.go | 422 ++++- .../go/internal/gcimporter/newInterface10.go | 1 + .../go/internal/gcimporter/newInterface11.go | 1 + .../go/internal/gcimporter/support_go117.go | 16 + .../go/internal/gcimporter/support_go118.go | 23 + .../go/internal/gcimporter/unified_no.go | 10 + .../go/internal/gcimporter/unified_yes.go | 10 + .../go/internal/gcimporter/ureader_no.go | 19 + .../go/internal/gcimporter/ureader_yes.go | 612 +++++++ .../tools/go/internal/packagesdriver/sizes.go | 154 +- .../x/tools/go/internal/pkgbits/codes.go | 77 + .../x/tools/go/internal/pkgbits/decoder.go | 433 +++++ .../x/tools/go/internal/pkgbits/doc.go | 32 + .../x/tools/go/internal/pkgbits/encoder.go | 379 ++++ .../x/tools/go/internal/pkgbits/flags.go | 9 + .../x/tools/go/internal/pkgbits/frames_go1.go | 21 + .../tools/go/internal/pkgbits/frames_go17.go | 28 + .../x/tools/go/internal/pkgbits/reloc.go | 42 + .../x/tools/go/internal/pkgbits/support.go | 17 + .../x/tools/go/internal/pkgbits/sync.go | 113 ++ .../go/internal/pkgbits/syncmarker_string.go | 89 + vendor/golang.org/x/tools/go/packages/doc.go | 4 +- .../x/tools/go/packages/external.go | 11 +- .../golang.org/x/tools/go/packages/golist.go | 1187 ++++++------- .../x/tools/go/packages/golist_overlay.go | 444 ++++- .../x/tools/go/packages/loadmode_string.go | 57 + .../x/tools/go/packages/packages.go | 226 ++- .../golang.org/x/tools/go/packages/visit.go | 4 + .../x/tools/go/types/objectpath/objectpath.go | 351 +++- .../x/tools/go/types/typeutil/callee.go | 29 +- .../x/tools/go/types/typeutil/imports.go | 1 - .../x/tools/go/types/typeutil/map.go | 149 +- .../tools/go/types/typeutil/methodsetcache.go | 1 - .../x/tools/go/types/typeutil/ui.go | 1 - .../internal/analysisinternal/analysis.go | 397 +++++ .../x/tools/internal/event/core/event.go | 85 + .../x/tools/internal/event/core/export.go | 70 + .../x/tools/internal/event/core/fast.go | 77 + .../golang.org/x/tools/internal/event/doc.go | 7 + .../x/tools/internal/event/event.go | 127 ++ .../x/tools/internal/event/keys/keys.go | 564 ++++++ .../x/tools/internal/event/keys/standard.go | 22 + .../x/tools/internal/event/label/label.go | 215 +++ .../x/tools/internal/fastwalk/fastwalk.go | 196 --- .../fastwalk/fastwalk_dirent_fileno.go | 13 - .../internal/fastwalk/fastwalk_dirent_ino.go | 14 - .../fastwalk/fastwalk_dirent_namlen_bsd.go | 13 - .../fastwalk/fastwalk_dirent_namlen_linux.go | 29 - .../internal/fastwalk/fastwalk_portable.go | 37 - .../tools/internal/fastwalk/fastwalk_unix.go | 127 -- .../x/tools/internal/gocommand/invoke.go | 283 +++ .../x/tools/internal/gocommand/vendor.go | 109 ++ .../x/tools/internal/gocommand/version.go | 51 + .../x/tools/internal/gopathwalk/walk.go | 270 --- .../internal/packagesinternal/packages.go | 30 + .../golang.org/x/tools/internal/span/parse.go | 100 -- .../golang.org/x/tools/internal/span/span.go | 285 --- .../golang.org/x/tools/internal/span/token.go | 151 -- .../x/tools/internal/span/token111.go | 39 - .../x/tools/internal/span/token112.go | 16 - .../golang.org/x/tools/internal/span/uri.go | 152 -- .../golang.org/x/tools/internal/span/utf16.go | 94 - .../x/tools/internal/typeparams/common.go | 179 ++ .../x/tools/internal/typeparams/coretype.go | 122 ++ .../internal/typeparams/enabled_go117.go | 12 + .../internal/typeparams/enabled_go118.go | 15 + .../x/tools/internal/typeparams/normalize.go | 218 +++ .../x/tools/internal/typeparams/termlist.go | 163 ++ .../internal/typeparams/typeparams_go117.go | 197 +++ .../internal/typeparams/typeparams_go118.go | 151 ++ .../x/tools/internal/typeparams/typeterm.go | 170 ++ .../tools/internal/typesinternal/errorcode.go | 1526 +++++++++++++++++ .../typesinternal/errorcode_string.go | 167 ++ .../x/tools/internal/typesinternal/types.go | 52 + .../tools/internal/typesinternal/types_118.go | 19 + vendor/modules.txt | 24 +- 117 files changed, 10217 insertions(+), 2937 deletions(-) create mode 100644 vendor/golang.org/x/mod/LICENSE create mode 100644 vendor/golang.org/x/mod/PATENTS rename vendor/golang.org/x/{tools/internal => mod}/semver/semver.go (92%) create mode 100644 vendor/golang.org/x/sys/LICENSE create mode 100644 vendor/golang.org/x/sys/PATENTS create mode 100644 vendor/golang.org/x/sys/execabs/execabs.go create mode 100644 vendor/golang.org/x/sys/execabs/execabs_go118.go create mode 100644 vendor/golang.org/x/sys/execabs/execabs_go119.go delete mode 100644 vendor/golang.org/x/text/AUTHORS delete mode 100644 vendor/golang.org/x/text/CONTRIBUTORS delete mode 100644 vendor/golang.org/x/tools/AUTHORS delete mode 100644 vendor/golang.org/x/tools/CONTRIBUTORS create mode 100644 vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go create mode 100644 vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go create mode 100644 vendor/golang.org/x/tools/go/internal/gcimporter/unified_no.go create mode 100644 vendor/golang.org/x/tools/go/internal/gcimporter/unified_yes.go create mode 100644 vendor/golang.org/x/tools/go/internal/gcimporter/ureader_no.go create mode 100644 vendor/golang.org/x/tools/go/internal/gcimporter/ureader_yes.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/codes.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/decoder.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/doc.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/encoder.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/flags.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/frames_go1.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/frames_go17.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/reloc.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/support.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/sync.go create mode 100644 vendor/golang.org/x/tools/go/internal/pkgbits/syncmarker_string.go create mode 100644 vendor/golang.org/x/tools/go/packages/loadmode_string.go create mode 100644 vendor/golang.org/x/tools/internal/analysisinternal/analysis.go create mode 100644 vendor/golang.org/x/tools/internal/event/core/event.go create mode 100644 vendor/golang.org/x/tools/internal/event/core/export.go create mode 100644 vendor/golang.org/x/tools/internal/event/core/fast.go create mode 100644 vendor/golang.org/x/tools/internal/event/doc.go create mode 100644 vendor/golang.org/x/tools/internal/event/event.go create mode 100644 vendor/golang.org/x/tools/internal/event/keys/keys.go create mode 100644 vendor/golang.org/x/tools/internal/event/keys/standard.go create mode 100644 vendor/golang.org/x/tools/internal/event/label/label.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go delete mode 100644 vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go create mode 100644 vendor/golang.org/x/tools/internal/gocommand/invoke.go create mode 100644 vendor/golang.org/x/tools/internal/gocommand/vendor.go create mode 100644 vendor/golang.org/x/tools/internal/gocommand/version.go delete mode 100644 vendor/golang.org/x/tools/internal/gopathwalk/walk.go create mode 100644 vendor/golang.org/x/tools/internal/packagesinternal/packages.go delete mode 100644 vendor/golang.org/x/tools/internal/span/parse.go delete mode 100644 vendor/golang.org/x/tools/internal/span/span.go delete mode 100644 vendor/golang.org/x/tools/internal/span/token.go delete mode 100644 vendor/golang.org/x/tools/internal/span/token111.go delete mode 100644 vendor/golang.org/x/tools/internal/span/token112.go delete mode 100644 vendor/golang.org/x/tools/internal/span/uri.go delete mode 100644 vendor/golang.org/x/tools/internal/span/utf16.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/common.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/coretype.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/normalize.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/termlist.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go create mode 100644 vendor/golang.org/x/tools/internal/typeparams/typeterm.go create mode 100644 vendor/golang.org/x/tools/internal/typesinternal/errorcode.go create mode 100644 vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go create mode 100644 vendor/golang.org/x/tools/internal/typesinternal/types.go create mode 100644 vendor/golang.org/x/tools/internal/typesinternal/types_118.go diff --git a/go.mod b/go.mod index b313ac8..821d012 100644 --- a/go.mod +++ b/go.mod @@ -4,6 +4,6 @@ go 1.13 require ( go.uber.org/zap v1.14.0 - golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d - golang.org/x/text v0.3.2 + golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 + golang.org/x/text v0.3.8 ) diff --git a/go.sum b/go.sum index 13bbe0c..0a88432 100644 --- a/go.sum +++ b/go.sum @@ -1,18 +1,25 @@ github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI= github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= +github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI= github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= +github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE= github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= +github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I= github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk= github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= +github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= go.uber.org/atomic v1.5.0 h1:OI5t8sDa1Or+q8AeE+yKeB/SDYioSHAgcVljj9JIETY= go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ= go.uber.org/multierr v1.3.0 h1:sFPn2GLc3poCkfrpIXGhBD2X0CMIo4Q/zSULXrj/+uc= @@ -23,30 +30,48 @@ go.uber.org/zap v1.14.0 h1:/pduUoebOeeJzTDFuoMgC6nRkiasr1sBCIEorly7m4o= go.uber.org/zap v1.14.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI= -golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d h1:1ZiEyfaQIg3Qh0EoqpwAakHVhecoE5wlSg5GjnafJGw= -golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto= +golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 h1:7I4JAnoQBe7ZtJcBaYHi5UtiO8tQHbUSXxL+pnGRANg= +golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs= golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc= +golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s= +golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4= golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= +golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= +golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s= +golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= +golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= -golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs= -golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk= +golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= +golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= +golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY= +golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ= golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc= golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= -golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5 h1:hKsoRgsbwY1NafxrwTs+k64bikrLBkAgPir1TNCj3Zs= golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= +golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo= +golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU= +golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= +gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM= honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= diff --git a/vendor/golang.org/x/mod/LICENSE b/vendor/golang.org/x/mod/LICENSE new file mode 100644 index 0000000..6a66aea --- /dev/null +++ b/vendor/golang.org/x/mod/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/golang.org/x/mod/PATENTS b/vendor/golang.org/x/mod/PATENTS new file mode 100644 index 0000000..7330990 --- /dev/null +++ b/vendor/golang.org/x/mod/PATENTS @@ -0,0 +1,22 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the Go project. + +Google hereby grants to You a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable (except as stated in this section) +patent license to make, have made, use, offer to sell, sell, import, +transfer and otherwise run, modify and propagate the contents of this +implementation of Go, where such license applies only to those patent +claims, both currently owned or controlled by Google and acquired in +the future, licensable by Google that are necessarily infringed by this +implementation of Go. This grant does not include claims that would be +infringed only as a consequence of further modification of this +implementation. If you or your agent or exclusive licensee institute or +order or agree to the institution of patent litigation against any +entity (including a cross-claim or counterclaim in a lawsuit) alleging +that this implementation of Go or any code incorporated within this +implementation of Go constitutes direct or contributory patent +infringement, or inducement of patent infringement, then any patent +rights granted to you under this License for this implementation of Go +shall terminate as of the date such litigation is filed. diff --git a/vendor/golang.org/x/tools/internal/semver/semver.go b/vendor/golang.org/x/mod/semver/semver.go similarity index 92% rename from vendor/golang.org/x/tools/internal/semver/semver.go rename to vendor/golang.org/x/mod/semver/semver.go index 4af7118..a30a22b 100644 --- a/vendor/golang.org/x/tools/internal/semver/semver.go +++ b/vendor/golang.org/x/mod/semver/semver.go @@ -22,6 +22,8 @@ // as shorthands for vMAJOR.0.0 and vMAJOR.MINOR.0. package semver +import "sort" + // parsed returns the parsed form of a semantic version string. type parsed struct { major string @@ -30,7 +32,6 @@ type parsed struct { short string prerelease string build string - err string } // IsValid reports whether v is a valid semantic version string. @@ -107,7 +108,7 @@ func Build(v string) string { } // Compare returns an integer comparing two versions according to -// according to semantic version precedence. +// semantic version precedence. // The result will be 0 if v == w, -1 if v < w, or +1 if v > w. // // An invalid semantic version string is considered less than a valid one. @@ -138,6 +139,9 @@ func Compare(v, w string) int { // Max canonicalizes its arguments and then returns the version string // that compares greater. +// +// Deprecated: use Compare instead. In most cases, returning a canonicalized +// version is not expected or desired. func Max(v, w string) string { v = Canonical(v) w = Canonical(w) @@ -147,14 +151,30 @@ func Max(v, w string) string { return w } +// ByVersion implements sort.Interface for sorting semantic version strings. +type ByVersion []string + +func (vs ByVersion) Len() int { return len(vs) } +func (vs ByVersion) Swap(i, j int) { vs[i], vs[j] = vs[j], vs[i] } +func (vs ByVersion) Less(i, j int) bool { + cmp := Compare(vs[i], vs[j]) + if cmp != 0 { + return cmp < 0 + } + return vs[i] < vs[j] +} + +// Sort sorts a list of semantic version strings using ByVersion. +func Sort(list []string) { + sort.Sort(ByVersion(list)) +} + func parse(v string) (p parsed, ok bool) { if v == "" || v[0] != 'v' { - p.err = "missing v prefix" return } p.major, v, ok = parseInt(v[1:]) if !ok { - p.err = "bad major version" return } if v == "" { @@ -164,13 +184,11 @@ func parse(v string) (p parsed, ok bool) { return } if v[0] != '.' { - p.err = "bad minor prefix" ok = false return } p.minor, v, ok = parseInt(v[1:]) if !ok { - p.err = "bad minor version" return } if v == "" { @@ -179,31 +197,26 @@ func parse(v string) (p parsed, ok bool) { return } if v[0] != '.' { - p.err = "bad patch prefix" ok = false return } p.patch, v, ok = parseInt(v[1:]) if !ok { - p.err = "bad patch version" return } if len(v) > 0 && v[0] == '-' { p.prerelease, v, ok = parsePrerelease(v) if !ok { - p.err = "bad prerelease" return } } if len(v) > 0 && v[0] == '+' { p.build, v, ok = parseBuild(v) if !ok { - p.err = "bad build" return } } if v != "" { - p.err = "junk on end" ok = false return } @@ -263,7 +276,7 @@ func parseBuild(v string) (t, rest string, ok bool) { i := 1 start := 1 for i < len(v) { - if !isIdentChar(v[i]) { + if !isIdentChar(v[i]) && v[i] != '.' { return } if v[i] == '.' { diff --git a/vendor/golang.org/x/sys/LICENSE b/vendor/golang.org/x/sys/LICENSE new file mode 100644 index 0000000..6a66aea --- /dev/null +++ b/vendor/golang.org/x/sys/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/golang.org/x/sys/PATENTS b/vendor/golang.org/x/sys/PATENTS new file mode 100644 index 0000000..7330990 --- /dev/null +++ b/vendor/golang.org/x/sys/PATENTS @@ -0,0 +1,22 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the Go project. + +Google hereby grants to You a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable (except as stated in this section) +patent license to make, have made, use, offer to sell, sell, import, +transfer and otherwise run, modify and propagate the contents of this +implementation of Go, where such license applies only to those patent +claims, both currently owned or controlled by Google and acquired in +the future, licensable by Google that are necessarily infringed by this +implementation of Go. This grant does not include claims that would be +infringed only as a consequence of further modification of this +implementation. If you or your agent or exclusive licensee institute or +order or agree to the institution of patent litigation against any +entity (including a cross-claim or counterclaim in a lawsuit) alleging +that this implementation of Go or any code incorporated within this +implementation of Go constitutes direct or contributory patent +infringement, or inducement of patent infringement, then any patent +rights granted to you under this License for this implementation of Go +shall terminate as of the date such litigation is filed. diff --git a/vendor/golang.org/x/sys/execabs/execabs.go b/vendor/golang.org/x/sys/execabs/execabs.go new file mode 100644 index 0000000..b981cfb --- /dev/null +++ b/vendor/golang.org/x/sys/execabs/execabs.go @@ -0,0 +1,102 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package execabs is a drop-in replacement for os/exec +// that requires PATH lookups to find absolute paths. +// That is, execabs.Command("cmd") runs the same PATH lookup +// as exec.Command("cmd"), but if the result is a path +// which is relative, the Run and Start methods will report +// an error instead of running the executable. +// +// See https://blog.golang.org/path-security for more information +// about when it may be necessary or appropriate to use this package. +package execabs + +import ( + "context" + "fmt" + "os/exec" + "path/filepath" + "reflect" + "unsafe" +) + +// ErrNotFound is the error resulting if a path search failed to find an executable file. +// It is an alias for exec.ErrNotFound. +var ErrNotFound = exec.ErrNotFound + +// Cmd represents an external command being prepared or run. +// It is an alias for exec.Cmd. +type Cmd = exec.Cmd + +// Error is returned by LookPath when it fails to classify a file as an executable. +// It is an alias for exec.Error. +type Error = exec.Error + +// An ExitError reports an unsuccessful exit by a command. +// It is an alias for exec.ExitError. +type ExitError = exec.ExitError + +func relError(file, path string) error { + return fmt.Errorf("%s resolves to executable in current directory (.%c%s)", file, filepath.Separator, path) +} + +// LookPath searches for an executable named file in the directories +// named by the PATH environment variable. If file contains a slash, +// it is tried directly and the PATH is not consulted. The result will be +// an absolute path. +// +// LookPath differs from exec.LookPath in its handling of PATH lookups, +// which are used for file names without slashes. If exec.LookPath's +// PATH lookup would have returned an executable from the current directory, +// LookPath instead returns an error. +func LookPath(file string) (string, error) { + path, err := exec.LookPath(file) + if err != nil && !isGo119ErrDot(err) { + return "", err + } + if filepath.Base(file) == file && !filepath.IsAbs(path) { + return "", relError(file, path) + } + return path, nil +} + +func fixCmd(name string, cmd *exec.Cmd) { + if filepath.Base(name) == name && !filepath.IsAbs(cmd.Path) { + // exec.Command was called with a bare binary name and + // exec.LookPath returned a path which is not absolute. + // Set cmd.lookPathErr and clear cmd.Path so that it + // cannot be run. + lookPathErr := (*error)(unsafe.Pointer(reflect.ValueOf(cmd).Elem().FieldByName("lookPathErr").Addr().Pointer())) + if *lookPathErr == nil { + *lookPathErr = relError(name, cmd.Path) + } + cmd.Path = "" + } +} + +// CommandContext is like Command but includes a context. +// +// The provided context is used to kill the process (by calling os.Process.Kill) +// if the context becomes done before the command completes on its own. +func CommandContext(ctx context.Context, name string, arg ...string) *exec.Cmd { + cmd := exec.CommandContext(ctx, name, arg...) + fixCmd(name, cmd) + return cmd + +} + +// Command returns the Cmd struct to execute the named program with the given arguments. +// See exec.Command for most details. +// +// Command differs from exec.Command in its handling of PATH lookups, +// which are used when the program name contains no slashes. +// If exec.Command would have returned an exec.Cmd configured to run an +// executable from the current directory, Command instead +// returns an exec.Cmd that will return an error from Start or Run. +func Command(name string, arg ...string) *exec.Cmd { + cmd := exec.Command(name, arg...) + fixCmd(name, cmd) + return cmd +} diff --git a/vendor/golang.org/x/sys/execabs/execabs_go118.go b/vendor/golang.org/x/sys/execabs/execabs_go118.go new file mode 100644 index 0000000..6ab5f50 --- /dev/null +++ b/vendor/golang.org/x/sys/execabs/execabs_go118.go @@ -0,0 +1,12 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !go1.19 +// +build !go1.19 + +package execabs + +func isGo119ErrDot(err error) bool { + return false +} diff --git a/vendor/golang.org/x/sys/execabs/execabs_go119.go b/vendor/golang.org/x/sys/execabs/execabs_go119.go new file mode 100644 index 0000000..1e7a9ad --- /dev/null +++ b/vendor/golang.org/x/sys/execabs/execabs_go119.go @@ -0,0 +1,15 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.19 +// +build go1.19 + +package execabs + +import "strings" + +func isGo119ErrDot(err error) bool { + // TODO: return errors.Is(err, exec.ErrDot) + return strings.Contains(err.Error(), "current directory") +} diff --git a/vendor/golang.org/x/text/AUTHORS b/vendor/golang.org/x/text/AUTHORS deleted file mode 100644 index 15167cd..0000000 --- a/vendor/golang.org/x/text/AUTHORS +++ /dev/null @@ -1,3 +0,0 @@ -# This source code refers to The Go Authors for copyright purposes. -# The master list of authors is in the main Go distribution, -# visible at http://tip.golang.org/AUTHORS. diff --git a/vendor/golang.org/x/text/CONTRIBUTORS b/vendor/golang.org/x/text/CONTRIBUTORS deleted file mode 100644 index 1c4577e..0000000 --- a/vendor/golang.org/x/text/CONTRIBUTORS +++ /dev/null @@ -1,3 +0,0 @@ -# This source code was written by the Go contributors. -# The master list of contributors is in the main Go distribution, -# visible at http://tip.golang.org/CONTRIBUTORS. diff --git a/vendor/golang.org/x/text/encoding/internal/identifier/mib.go b/vendor/golang.org/x/text/encoding/internal/identifier/mib.go index fc7df1b..351fb86 100644 --- a/vendor/golang.org/x/text/encoding/internal/identifier/mib.go +++ b/vendor/golang.org/x/text/encoding/internal/identifier/mib.go @@ -905,6 +905,14 @@ const ( // https://www.unicode.org/notes/tn6/ BOCU1 MIB = 1020 + // UTF7IMAP is the MIB identifier with IANA name UTF-7-IMAP. + // + // Note: This charset is used to encode Unicode in IMAP mailbox names; + // see section 5.1.3 of rfc3501 . It should never be used + // outside this context. A name has been assigned so that charset processing + // implementations can refer to it in a consistent way. + UTF7IMAP MIB = 1021 + // Windows30Latin1 is the MIB identifier with IANA name ISO-8859-1-Windows-3.0-Latin-1. // // Extended ISO 8859-1 Latin-1 for Windows 3.0. diff --git a/vendor/golang.org/x/text/encoding/unicode/unicode.go b/vendor/golang.org/x/text/encoding/unicode/unicode.go index 4850ff3..dd99ad1 100644 --- a/vendor/golang.org/x/text/encoding/unicode/unicode.go +++ b/vendor/golang.org/x/text/encoding/unicode/unicode.go @@ -6,6 +6,7 @@ package unicode // import "golang.org/x/text/encoding/unicode" import ( + "bytes" "errors" "unicode/utf16" "unicode/utf8" @@ -25,15 +26,95 @@ import ( // the introduction of some kind of error type for conveying the erroneous code // point. -// UTF8 is the UTF-8 encoding. +// UTF8 is the UTF-8 encoding. It neither removes nor adds byte order marks. var UTF8 encoding.Encoding = utf8enc +// UTF8BOM is an UTF-8 encoding where the decoder strips a leading byte order +// mark while the encoder adds one. +// +// Some editors add a byte order mark as a signature to UTF-8 files. Although +// the byte order mark is not useful for detecting byte order in UTF-8, it is +// sometimes used as a convention to mark UTF-8-encoded files. This relies on +// the observation that the UTF-8 byte order mark is either an illegal or at +// least very unlikely sequence in any other character encoding. +var UTF8BOM encoding.Encoding = utf8bomEncoding{} + +type utf8bomEncoding struct{} + +func (utf8bomEncoding) String() string { + return "UTF-8-BOM" +} + +func (utf8bomEncoding) ID() (identifier.MIB, string) { + return identifier.Unofficial, "x-utf8bom" +} + +func (utf8bomEncoding) NewEncoder() *encoding.Encoder { + return &encoding.Encoder{ + Transformer: &utf8bomEncoder{t: runes.ReplaceIllFormed()}, + } +} + +func (utf8bomEncoding) NewDecoder() *encoding.Decoder { + return &encoding.Decoder{Transformer: &utf8bomDecoder{}} +} + var utf8enc = &internal.Encoding{ &internal.SimpleEncoding{utf8Decoder{}, runes.ReplaceIllFormed()}, "UTF-8", identifier.UTF8, } +type utf8bomDecoder struct { + checked bool +} + +func (t *utf8bomDecoder) Reset() { + t.checked = false +} + +func (t *utf8bomDecoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { + if !t.checked { + if !atEOF && len(src) < len(utf8BOM) { + if len(src) == 0 { + return 0, 0, nil + } + return 0, 0, transform.ErrShortSrc + } + if bytes.HasPrefix(src, []byte(utf8BOM)) { + nSrc += len(utf8BOM) + src = src[len(utf8BOM):] + } + t.checked = true + } + nDst, n, err := utf8Decoder.Transform(utf8Decoder{}, dst[nDst:], src, atEOF) + nSrc += n + return nDst, nSrc, err +} + +type utf8bomEncoder struct { + written bool + t transform.Transformer +} + +func (t *utf8bomEncoder) Reset() { + t.written = false + t.t.Reset() +} + +func (t *utf8bomEncoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { + if !t.written { + if len(dst) < len(utf8BOM) { + return nDst, 0, transform.ErrShortDst + } + nDst = copy(dst, utf8BOM) + t.written = true + } + n, nSrc, err := utf8Decoder.Transform(utf8Decoder{}, dst[nDst:], src, atEOF) + nDst += n + return nDst, nSrc, err +} + type utf8Decoder struct{ transform.NopResetter } func (utf8Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { @@ -287,16 +368,13 @@ func (u *utf16Decoder) Reset() { } func (u *utf16Decoder) Transform(dst, src []byte, atEOF bool) (nDst, nSrc int, err error) { + if len(src) < 2 && atEOF && u.current.bomPolicy&requireBOM != 0 { + return 0, 0, ErrMissingBOM + } if len(src) == 0 { - if atEOF && u.current.bomPolicy&requireBOM != 0 { - return 0, 0, ErrMissingBOM - } return 0, 0, nil } - if u.current.bomPolicy&acceptBOM != 0 { - if len(src) < 2 { - return 0, 0, transform.ErrShortSrc - } + if len(src) >= 2 && u.current.bomPolicy&acceptBOM != 0 { switch { case src[0] == 0xfe && src[1] == 0xff: u.current.endianness = BigEndian diff --git a/vendor/golang.org/x/text/internal/utf8internal/utf8internal.go b/vendor/golang.org/x/text/internal/utf8internal/utf8internal.go index 575cea8..e5c53b1 100644 --- a/vendor/golang.org/x/text/internal/utf8internal/utf8internal.go +++ b/vendor/golang.org/x/text/internal/utf8internal/utf8internal.go @@ -74,7 +74,7 @@ type AcceptRange struct { // AcceptRanges is a slice of AcceptRange values. For a given byte sequence b // -// AcceptRanges[First[b[0]]>>AcceptShift] +// AcceptRanges[First[b[0]]>>AcceptShift] // // will give the value of AcceptRange for the multi-byte UTF-8 sequence starting // at b[0]. diff --git a/vendor/golang.org/x/text/transform/transform.go b/vendor/golang.org/x/text/transform/transform.go index 520b9ad..48ec64b 100644 --- a/vendor/golang.org/x/text/transform/transform.go +++ b/vendor/golang.org/x/text/transform/transform.go @@ -648,7 +648,8 @@ func String(t Transformer, s string) (result string, n int, err error) { // Transform the remaining input, growing dst and src buffers as necessary. for { n := copy(src, s[pSrc:]) - nDst, nSrc, err := t.Transform(dst[pDst:], src[:n], pSrc+n == len(s)) + atEOF := pSrc+n == len(s) + nDst, nSrc, err := t.Transform(dst[pDst:], src[:n], atEOF) pDst += nDst pSrc += nSrc @@ -659,6 +660,9 @@ func String(t Transformer, s string) (result string, n int, err error) { dst = grow(dst, pDst) } } else if err == ErrShortSrc { + if atEOF { + return string(dst[:pDst]), pSrc, err + } if nSrc == 0 { src = grow(src, 0) } diff --git a/vendor/golang.org/x/tools/AUTHORS b/vendor/golang.org/x/tools/AUTHORS deleted file mode 100644 index 15167cd..0000000 --- a/vendor/golang.org/x/tools/AUTHORS +++ /dev/null @@ -1,3 +0,0 @@ -# This source code refers to The Go Authors for copyright purposes. -# The master list of authors is in the main Go distribution, -# visible at http://tip.golang.org/AUTHORS. diff --git a/vendor/golang.org/x/tools/CONTRIBUTORS b/vendor/golang.org/x/tools/CONTRIBUTORS deleted file mode 100644 index 1c4577e..0000000 --- a/vendor/golang.org/x/tools/CONTRIBUTORS +++ /dev/null @@ -1,3 +0,0 @@ -# This source code was written by the Go contributors. -# The master list of contributors is in the main Go distribution, -# visible at http://tip.golang.org/CONTRIBUTORS. diff --git a/vendor/golang.org/x/tools/go/analysis/analysis.go b/vendor/golang.org/x/tools/go/analysis/analysis.go index ea605f4..d11505a 100644 --- a/vendor/golang.org/x/tools/go/analysis/analysis.go +++ b/vendor/golang.org/x/tools/go/analysis/analysis.go @@ -1,3 +1,7 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package analysis import ( @@ -7,6 +11,8 @@ import ( "go/token" "go/types" "reflect" + + "golang.org/x/tools/internal/analysisinternal" ) // An Analyzer describes an analysis function and its options. @@ -69,6 +75,17 @@ type Analyzer struct { func (a *Analyzer) String() string { return a.Name } +func init() { + // Set the analysisinternal functions to be able to pass type errors + // to the Pass type without modifying the go/analysis API. + analysisinternal.SetTypeErrors = func(p interface{}, errors []types.Error) { + p.(*Pass).typeErrors = errors + } + analysisinternal.GetTypeErrors = func(p interface{}) []types.Error { + return p.(*Pass).typeErrors + } +} + // A Pass provides information to the Run function that // applies a specific analyzer to a single Go package. // @@ -82,12 +99,13 @@ type Pass struct { Analyzer *Analyzer // the identity of the current analyzer // syntax and type information - Fset *token.FileSet // file position information - Files []*ast.File // the abstract syntax tree of each file - OtherFiles []string // names of non-Go files of this package - Pkg *types.Package // type information about the package - TypesInfo *types.Info // type information about the syntax trees - TypesSizes types.Sizes // function for computing sizes of types + Fset *token.FileSet // file position information + Files []*ast.File // the abstract syntax tree of each file + OtherFiles []string // names of non-Go files of this package + IgnoredFiles []string // names of ignored source files in this package + Pkg *types.Package // type information about the package + TypesInfo *types.Info // type information about the syntax trees + TypesSizes types.Sizes // function for computing sizes of types // Report reports a Diagnostic, a finding about a specific location // in the analyzed source code such as a potential mistake. @@ -138,6 +156,9 @@ type Pass struct { // WARNING: This is an experimental API and may change in the future. AllObjectFacts func() []ObjectFact + // typeErrors contains types.Errors that are associated with the pkg. + typeErrors []types.Error + /* Further fields may be added in future. */ // For example, suggested or applied refactorings. } diff --git a/vendor/golang.org/x/tools/go/analysis/diagnostic.go b/vendor/golang.org/x/tools/go/analysis/diagnostic.go index 57eaf6f..cd462a0 100644 --- a/vendor/golang.org/x/tools/go/analysis/diagnostic.go +++ b/vendor/golang.org/x/tools/go/analysis/diagnostic.go @@ -1,3 +1,7 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package analysis import "go/token" diff --git a/vendor/golang.org/x/tools/go/analysis/doc.go b/vendor/golang.org/x/tools/go/analysis/doc.go index a2353fc..03c3152 100644 --- a/vendor/golang.org/x/tools/go/analysis/doc.go +++ b/vendor/golang.org/x/tools/go/analysis/doc.go @@ -1,9 +1,12 @@ -/* +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. -The analysis package defines the interface between a modular static +/* +Package analysis defines the interface between a modular static analysis and an analysis driver program. -Background +# Background A static analysis is a function that inspects a package of Go code and reports a set of diagnostics (typically mistakes in the code), and @@ -27,8 +30,7 @@ frameworks, code review tools, code-base indexers (such as SourceGraph), documentation viewers (such as godoc), batch pipelines for large code bases, and so on. - -Analyzer +# Analyzer The primary type in the API is Analyzer. An Analyzer statically describes an analysis function: its name, documentation, flags, @@ -41,9 +43,9 @@ the go/analysis/passes/ subdirectory: package unusedresult var Analyzer = &analysis.Analyzer{ - Name: "unusedresult", - Doc: "check for unused results of calls to some functions", - Run: run, + Name: "unusedresult", + Doc: "check for unused results of calls to some functions", + Run: run, ... } @@ -51,7 +53,6 @@ the go/analysis/passes/ subdirectory: ... } - An analysis driver is a program such as vet that runs a set of analyses and prints the diagnostics that they report. The driver program must import the list of Analyzers it needs. @@ -70,51 +71,18 @@ A driver may use the name, flags, and documentation to provide on-line help that describes the analyses it performs. The doc comment contains a brief one-line summary, optionally followed by paragraphs of explanation. -The vet command, shown below, is an example of a driver that runs -multiple analyzers. It is based on the multichecker package -(see the "Standalone commands" section for details). - - $ go build golang.org/x/tools/go/analysis/cmd/vet - $ ./vet help - vet is a tool for static analysis of Go programs. - - Usage: vet [-flag] [package] - - Registered analyzers: - - asmdecl report mismatches between assembly files and Go declarations - assign check for useless assignments - atomic check for common mistakes using the sync/atomic package - ... - unusedresult check for unused results of calls to some functions - - $ ./vet help unusedresult - unusedresult: check for unused results of calls to some functions - - Analyzer flags: - - -unusedresult.funcs value - comma-separated list of functions whose results must be used (default Error,String) - -unusedresult.stringmethods value - comma-separated list of names of methods of type func() string whose results must be used - - Some functions like fmt.Errorf return a result and have no side effects, - so it is always a mistake to discard the result. This analyzer reports - calls to certain functions in which the result of the call is ignored. - - The set of functions may be controlled using flags. The Analyzer type has more fields besides those shown above: type Analyzer struct { - Name string - Doc string - Flags flag.FlagSet - Run func(*Pass) (interface{}, error) - RunDespiteErrors bool - ResultType reflect.Type - Requires []*Analyzer - FactTypes []Fact + Name string + Doc string + Flags flag.FlagSet + Run func(*Pass) (interface{}, error) + RunDespiteErrors bool + ResultType reflect.Type + Requires []*Analyzer + FactTypes []Fact } The Flags field declares a set of named (global) flag variables that @@ -144,8 +112,7 @@ Finally, the Run field contains a function to be called by the driver to execute the analysis on a single package. The driver passes it an instance of the Pass type. - -Pass +# Pass A Pass describes a single unit of work: the application of a particular Analyzer to a particular package of Go code. @@ -154,13 +121,14 @@ package being analyzed, and provides operations to the Run function for reporting diagnostics and other information back to the driver. type Pass struct { - Fset *token.FileSet - Files []*ast.File - OtherFiles []string - Pkg *types.Package - TypesInfo *types.Info - ResultOf map[*Analyzer]interface{} - Report func(Diagnostic) + Fset *token.FileSet + Files []*ast.File + OtherFiles []string + IgnoredFiles []string + Pkg *types.Package + TypesInfo *types.Info + ResultOf map[*Analyzer]interface{} + Report func(Diagnostic) ... } @@ -172,6 +140,12 @@ files such as assembly that are part of this package. See the "asmdecl" or "buildtags" analyzers for examples of loading non-Go files and reporting diagnostics against them. +The IgnoredFiles field provides the names, but not the contents, +of ignored Go and non-Go source files that are not part of this package +with the current build configuration but may be part of other build +configurations. See the "buildtags" analyzer for an example of loading +and checking IgnoredFiles. + The ResultOf field provides the results computed by the analyzers required by this one, as expressed in its Analyzer.Requires field. The driver runs the required analyzers first and makes their results @@ -203,6 +177,15 @@ Diagnostic is defined as: The optional Category field is a short identifier that classifies the kind of message when an analysis produces several kinds of diagnostic. +Many analyses want to associate diagnostics with a severity level. +Because Diagnostic does not have a severity level field, an Analyzer's +diagnostics effectively all have the same severity level. To separate which +diagnostics are high severity and which are low severity, expose multiple +Analyzers instead. Analyzers should also be separated when their +diagnostics belong in different groups, or could be tagged differently +before being shown to the end user. Analyzers should document their severity +level to help downstream tools surface diagnostics properly. + Most Analyzers inspect typed Go syntax trees, but a few, such as asmdecl and buildtag, inspect the raw text of Go source files or even non-Go files such as assembly. To report a diagnostic against a line of a @@ -215,8 +198,7 @@ raw text file, use the following sequence: ... pass.Reportf(tf.LineStart(line), "oops") - -Modular analysis with Facts +# Modular analysis with Facts To improve efficiency and scalability, large programs are routinely built using separate compilation: units of the program are compiled @@ -245,7 +227,7 @@ package. An Analyzer that uses facts must declare their types: var Analyzer = &analysis.Analyzer{ - Name: "printf", + Name: "printf", FactTypes: []analysis.Fact{new(isWrapper)}, ... } @@ -259,6 +241,9 @@ Consequently, Facts must be serializable. The API requires that drivers use the gob encoding, an efficient, robust, self-describing binary protocol. A fact type may implement the GobEncoder/GobDecoder interfaces if the default encoding is unsuitable. Facts should be stateless. +Because serialized facts may appear within build outputs, the gob encoding +of a fact must be deterministic, to avoid spurious cache misses in +build systems that use content-addressable caches. The Pass type has functions to import and export facts, associated either with an object or with a package: @@ -293,8 +278,7 @@ this fact is built in to the analyzer so that it correctly checks calls to log.Printf even when run in a driver that does not apply it to standard packages. We would like to remove this limitation in future. - -Testing an Analyzer +# Testing an Analyzer The analysistest subpackage provides utilities for testing an Analyzer. In a few lines of code, it is possible to run an analyzer on a package @@ -302,8 +286,7 @@ of testdata files and check that it reported all the expected diagnostics and facts (and no more). Expectations are expressed using "// want ..." comments in the input code. - -Standalone commands +# Standalone commands Analyzers are provided in the form of packages that a driver program is expected to import. The vet command imports a set of several analyzers, @@ -329,8 +312,5 @@ entirety as: A tool that provides multiple analyzers can use multichecker in a similar way, giving it the list of Analyzers. - - - */ package analysis diff --git a/vendor/golang.org/x/tools/go/analysis/passes/inspect/inspect.go b/vendor/golang.org/x/tools/go/analysis/passes/inspect/inspect.go index 2856df1..c1c1127 100644 --- a/vendor/golang.org/x/tools/go/analysis/passes/inspect/inspect.go +++ b/vendor/golang.org/x/tools/go/analysis/passes/inspect/inspect.go @@ -3,8 +3,8 @@ // license that can be found in the LICENSE file. // Package inspect defines an Analyzer that provides an AST inspector -// (golang.org/x/tools/go/ast/inspect.Inspect) for the syntax trees of a -// package. It is only a building block for other analyzers. +// (golang.org/x/tools/go/ast/inspector.Inspector) for the syntax trees +// of a package. It is only a building block for other analyzers. // // Example of use in another analysis: // @@ -19,14 +19,13 @@ // Requires: []*analysis.Analyzer{inspect.Analyzer}, // } // -// func run(pass *analysis.Pass) (interface{}, error) { -// inspect := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector) -// inspect.Preorder(nil, func(n ast.Node) { -// ... -// }) -// return nil -// } -// +// func run(pass *analysis.Pass) (interface{}, error) { +// inspect := pass.ResultOf[inspect.Analyzer].(*inspector.Inspector) +// inspect.Preorder(nil, func(n ast.Node) { +// ... +// }) +// return nil +// } package inspect import ( diff --git a/vendor/golang.org/x/tools/go/analysis/validate.go b/vendor/golang.org/x/tools/go/analysis/validate.go index be98143..9da5692 100644 --- a/vendor/golang.org/x/tools/go/analysis/validate.go +++ b/vendor/golang.org/x/tools/go/analysis/validate.go @@ -1,14 +1,21 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package analysis import ( "fmt" "reflect" + "strings" "unicode" ) // Validate reports an error if any of the analyzers are misconfigured. // Checks include: // that the name is a valid identifier; +// that the Doc is not empty; +// that the Run is non-nil; // that the Requires graph is acyclic; // that analyzer fact types are unique; // that each fact type is a pointer. @@ -41,6 +48,9 @@ func Validate(analyzers []*Analyzer) error { return fmt.Errorf("analyzer %q is undocumented", a) } + if a.Run == nil { + return fmt.Errorf("analyzer %q has nil Run", a) + } // fact types for _, f := range a.FactTypes { if f == nil { @@ -58,14 +68,28 @@ func Validate(analyzers []*Analyzer) error { } // recursion - for i, req := range a.Requires { + for _, req := range a.Requires { if err := visit(req); err != nil { - return fmt.Errorf("%s.Requires[%d]: %v", a.Name, i, err) + return err } } color[a] = black } + if color[a] == grey { + stack := []*Analyzer{a} + inCycle := map[string]bool{} + for len(stack) > 0 { + current := stack[len(stack)-1] + stack = stack[:len(stack)-1] + if color[current] == grey && !inCycle[current.Name] { + inCycle[current.Name] = true + stack = append(stack, current.Requires...) + } + } + return &CycleInRequiresGraphError{AnalyzerNames: inCycle} + } + return nil } for _, a := range analyzers { @@ -95,3 +119,17 @@ func validIdent(name string) bool { } return name != "" } + +type CycleInRequiresGraphError struct { + AnalyzerNames map[string]bool +} + +func (e *CycleInRequiresGraphError) Error() string { + var b strings.Builder + b.WriteString("cycle detected involving the following analyzers:") + for n := range e.AnalyzerNames { + b.WriteByte(' ') + b.WriteString(n) + } + return b.String() +} diff --git a/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go b/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go index 6b7052b..9fa5aa1 100644 --- a/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go +++ b/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go @@ -11,6 +11,8 @@ import ( "go/ast" "go/token" "sort" + + "golang.org/x/tools/internal/typeparams" ) // PathEnclosingInterval returns the node that encloses the source @@ -20,9 +22,9 @@ import ( // additional whitespace abutting a node to be enclosed by it. // In this example: // -// z := x + y // add them -// <-A-> -// <----B-----> +// z := x + y // add them +// <-A-> +// <----B-----> // // the ast.BinaryExpr(+) node is considered to enclose interval B // even though its [Pos()..End()) is actually only interval A. @@ -41,10 +43,10 @@ import ( // interior whitespace of path[0]. // In this example: // -// z := x + y // add them -// <--C--> <---E--> -// ^ -// D +// z := x + y // add them +// <--C--> <---E--> +// ^ +// D // // intervals C, D and E are inexact. C is contained by the // z-assignment statement, because it spans three of its children (:=, @@ -52,12 +54,11 @@ import ( // interior whitespace of the assignment. E is considered interior // whitespace of the BlockStmt containing the assignment. // -// Precondition: [start, end) both lie within the same file as root. -// TODO(adonovan): return (nil, false) in this case and remove precond. -// Requires FileSet; see loader.tokenFileContainsPos. -// -// Postcondition: path is never nil; it always contains at least 'root'. -// +// The resulting path is never empty; it always contains at least the +// 'root' *ast.File. Ideally PathEnclosingInterval would reject +// intervals that lie wholly or partially outside the range of the +// file, but unfortunately ast.File records only the token.Pos of +// the 'package' keyword, but not of the start of the file itself. func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Node, exact bool) { // fmt.Printf("EnclosingInterval %d %d\n", start, end) // debugging @@ -133,6 +134,7 @@ func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Nod return false // inexact: overlaps multiple children } + // Ensure [start,end) is nondecreasing. if start > end { start, end = end, start } @@ -160,7 +162,6 @@ func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Nod // tokenNode is a dummy implementation of ast.Node for a single token. // They are used transiently by PathEnclosingInterval but never escape // this package. -// type tokenNode struct { pos token.Pos end token.Pos @@ -181,7 +182,6 @@ func tok(pos token.Pos, len int) ast.Node { // childrenOf returns the direct non-nil children of ast.Node n. // It may include fake ast.Node implementations for bare tokens. // it is not safe to call (e.g.) ast.Walk on such nodes. -// func childrenOf(n ast.Node) []ast.Node { var children []ast.Node @@ -294,8 +294,8 @@ func childrenOf(n ast.Node) []ast.Node { case *ast.FieldList: children = append(children, - tok(n.Opening, len("(")), - tok(n.Closing, len(")"))) + tok(n.Opening, len("(")), // or len("[") + tok(n.Closing, len(")"))) // or len("]") case *ast.File: // TODO test: Doc @@ -322,6 +322,9 @@ func childrenOf(n ast.Node) []ast.Node { children = append(children, n.Recv) } children = append(children, n.Name) + if tparams := typeparams.ForFuncType(n.Type); tparams != nil { + children = append(children, tparams) + } if n.Type.Params != nil { children = append(children, n.Type.Params) } @@ -371,8 +374,13 @@ func childrenOf(n ast.Node) []ast.Node { case *ast.IndexExpr: children = append(children, - tok(n.Lbrack, len("{")), - tok(n.Rbrack, len("}"))) + tok(n.Lbrack, len("[")), + tok(n.Rbrack, len("]"))) + + case *typeparams.IndexListExpr: + children = append(children, + tok(n.Lbrack, len("[")), + tok(n.Rbrack, len("]"))) case *ast.InterfaceType: children = append(children, @@ -478,7 +486,6 @@ func (sl byPos) Swap(i, j int) { // TODO(adonovan): in some cases (e.g. Field, FieldList, Ident, // StarExpr) we could be much more specific given the path to the AST // root. Perhaps we should do that. -// func NodeDescription(n ast.Node) string { switch n := n.(type) { case *ast.ArrayType: @@ -581,6 +588,8 @@ func NodeDescription(n ast.Node) string { return "decrement statement" case *ast.IndexExpr: return "index expression" + case *typeparams.IndexListExpr: + return "index list expression" case *ast.InterfaceType: return "interface type" case *ast.KeyValueExpr: diff --git a/vendor/golang.org/x/tools/go/ast/astutil/imports.go b/vendor/golang.org/x/tools/go/ast/astutil/imports.go index 3e4b195..18d1adb 100644 --- a/vendor/golang.org/x/tools/go/ast/astutil/imports.go +++ b/vendor/golang.org/x/tools/go/ast/astutil/imports.go @@ -22,8 +22,11 @@ func AddImport(fset *token.FileSet, f *ast.File, path string) (added bool) { // If name is not empty, it is used to rename the import. // // For example, calling +// // AddNamedImport(fset, f, "pathpkg", "path") +// // adds +// // import pathpkg "path" func AddNamedImport(fset *token.FileSet, f *ast.File, name, path string) (added bool) { if imports(f, name, path) { @@ -270,14 +273,15 @@ func DeleteNamedImport(fset *token.FileSet, f *ast.File, name, path string) (del } if j > 0 { lastImpspec := gen.Specs[j-1].(*ast.ImportSpec) - lastLine := fset.Position(lastImpspec.Path.ValuePos).Line - line := fset.Position(impspec.Path.ValuePos).Line + lastLine := fset.PositionFor(lastImpspec.Path.ValuePos, false).Line + line := fset.PositionFor(impspec.Path.ValuePos, false).Line // We deleted an entry but now there may be // a blank line-sized hole where the import was. - if line-lastLine > 1 { + if line-lastLine > 1 || !gen.Rparen.IsValid() { // There was a blank line immediately preceding the deleted import, - // so there's no need to close the hole. + // so there's no need to close the hole. The right parenthesis is + // invalid after AddImport to an import statement without parenthesis. // Do nothing. } else if line != fset.File(gen.Rparen).LineCount() { // There was no blank line. Close the hole. diff --git a/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go b/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go index cf72ea9..f430b21 100644 --- a/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go +++ b/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go @@ -9,6 +9,8 @@ import ( "go/ast" "reflect" "sort" + + "golang.org/x/tools/internal/typeparams" ) // An ApplyFunc is invoked by Apply for each node n, even if n is nil, @@ -39,7 +41,6 @@ type ApplyFunc func(*Cursor) bool // Children are traversed in the order in which they appear in the // respective node's struct definition. A package's files are // traversed in the filenames' alphabetical order. -// func Apply(root ast.Node, pre, post ApplyFunc) (result ast.Node) { parent := &struct{ ast.Node }{root} defer func() { @@ -63,8 +64,8 @@ var abort = new(int) // singleton, to signal termination of Apply // c.Parent(), and f is the field identifier with name c.Name(), // the following invariants hold: // -// p.f == c.Node() if c.Index() < 0 -// p.f[c.Index()] == c.Node() if c.Index() >= 0 +// p.f == c.Node() if c.Index() < 0 +// p.f[c.Index()] == c.Node() if c.Index() >= 0 // // The methods Replace, Delete, InsertBefore, and InsertAfter // can be used to change the AST without disrupting Apply. @@ -251,6 +252,10 @@ func (a *application) apply(parent ast.Node, name string, iter *iterator, n ast. a.apply(n, "X", nil, n.X) a.apply(n, "Index", nil, n.Index) + case *typeparams.IndexListExpr: + a.apply(n, "X", nil, n.X) + a.applyList(n, "Indices") + case *ast.SliceExpr: a.apply(n, "X", nil, n.X) a.apply(n, "Low", nil, n.Low) @@ -288,6 +293,9 @@ func (a *application) apply(parent ast.Node, name string, iter *iterator, n ast. a.apply(n, "Fields", nil, n.Fields) case *ast.FuncType: + if tparams := typeparams.ForFuncType(n); tparams != nil { + a.apply(n, "TypeParams", nil, tparams) + } a.apply(n, "Params", nil, n.Params) a.apply(n, "Results", nil, n.Results) @@ -400,6 +408,9 @@ func (a *application) apply(parent ast.Node, name string, iter *iterator, n ast. case *ast.TypeSpec: a.apply(n, "Doc", nil, n.Doc) a.apply(n, "Name", nil, n.Name) + if tparams := typeparams.ForTypeSpec(n); tparams != nil { + a.apply(n, "TypeParams", nil, tparams) + } a.apply(n, "Type", nil, n.Type) a.apply(n, "Comment", nil, n.Comment) diff --git a/vendor/golang.org/x/tools/go/ast/astutil/util.go b/vendor/golang.org/x/tools/go/ast/astutil/util.go index 7630629..919d530 100644 --- a/vendor/golang.org/x/tools/go/ast/astutil/util.go +++ b/vendor/golang.org/x/tools/go/ast/astutil/util.go @@ -1,3 +1,7 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package astutil import "go/ast" diff --git a/vendor/golang.org/x/tools/go/ast/inspector/inspector.go b/vendor/golang.org/x/tools/go/ast/inspector/inspector.go index ddbdd3f..af5e17f 100644 --- a/vendor/golang.org/x/tools/go/ast/inspector/inspector.go +++ b/vendor/golang.org/x/tools/go/ast/inspector/inspector.go @@ -90,7 +90,7 @@ func (in *Inspector) Preorder(types []ast.Node, f func(ast.Node)) { // The types argument, if non-empty, enables type-based filtering of // events. The function f if is called only for nodes whose type // matches an element of the types slice. -func (in *Inspector) Nodes(types []ast.Node, f func(n ast.Node, push bool) (prune bool)) { +func (in *Inspector) Nodes(types []ast.Node, f func(n ast.Node, push bool) (proceed bool)) { mask := maskOf(types) for i := 0; i < len(in.events); { ev := in.events[i] @@ -114,7 +114,7 @@ func (in *Inspector) Nodes(types []ast.Node, f func(n ast.Node, push bool) (prun // supplies each call to f an additional argument, the current // traversal stack. The stack's first element is the outermost node, // an *ast.File; its last is the innermost, n. -func (in *Inspector) WithStack(types []ast.Node, f func(n ast.Node, push bool, stack []ast.Node) (prune bool)) { +func (in *Inspector) WithStack(types []ast.Node, f func(n ast.Node, push bool, stack []ast.Node) (proceed bool)) { mask := maskOf(types) var stack []ast.Node for i := 0; i < len(in.events); { @@ -150,7 +150,11 @@ func traverse(files []*ast.File) []event { extent += int(f.End() - f.Pos()) } // This estimate is based on the net/http package. - events := make([]event, 0, extent*33/100) + capacity := extent * 33 / 100 + if capacity > 1e6 { + capacity = 1e6 // impose some reasonable maximum + } + events := make([]event, 0, capacity) var stack []event for _, f := range files { diff --git a/vendor/golang.org/x/tools/go/ast/inspector/typeof.go b/vendor/golang.org/x/tools/go/ast/inspector/typeof.go index d61301b..11ab2bc 100644 --- a/vendor/golang.org/x/tools/go/ast/inspector/typeof.go +++ b/vendor/golang.org/x/tools/go/ast/inspector/typeof.go @@ -1,3 +1,7 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package inspector // This file defines func typeOf(ast.Node) uint64. @@ -5,7 +9,11 @@ package inspector // The initial map-based implementation was too slow; // see https://go-review.googlesource.com/c/tools/+/135655/1/go/ast/inspector/inspector.go#196 -import "go/ast" +import ( + "go/ast" + + "golang.org/x/tools/internal/typeparams" +) const ( nArrayType = iota @@ -43,6 +51,7 @@ const ( nImportSpec nIncDecStmt nIndexExpr + nIndexListExpr nInterfaceType nKeyValueExpr nLabeledStmt @@ -68,12 +77,14 @@ const ( // typeOf returns a distinct single-bit value that represents the type of n. // // Various implementations were benchmarked with BenchmarkNewInspector: -// GOGC=off -// - type switch 4.9-5.5ms 2.1ms -// - binary search over a sorted list of types 5.5-5.9ms 2.5ms -// - linear scan, frequency-ordered list 5.9-6.1ms 2.7ms -// - linear scan, unordered list 6.4ms 2.7ms -// - hash table 6.5ms 3.1ms +// +// GOGC=off +// - type switch 4.9-5.5ms 2.1ms +// - binary search over a sorted list of types 5.5-5.9ms 2.5ms +// - linear scan, frequency-ordered list 5.9-6.1ms 2.7ms +// - linear scan, unordered list 6.4ms 2.7ms +// - hash table 6.5ms 3.1ms +// // A perfect hash seemed like overkill. // // The compiler's switch statement is the clear winner @@ -81,7 +92,6 @@ const ( // with constant conditions and good branch prediction. // (Sadly it is the most verbose in source code.) // Binary search suffered from poor branch prediction. -// func typeOf(n ast.Node) uint64 { // Fast path: nearly half of all nodes are identifiers. if _, ok := n.(*ast.Ident); ok { @@ -160,6 +170,8 @@ func typeOf(n ast.Node) uint64 { return 1 << nIncDecStmt case *ast.IndexExpr: return 1 << nIndexExpr + case *typeparams.IndexListExpr: + return 1 << nIndexListExpr case *ast.InterfaceType: return 1 << nInterfaceType case *ast.KeyValueExpr: diff --git a/vendor/golang.org/x/tools/go/buildutil/allpackages.go b/vendor/golang.org/x/tools/go/buildutil/allpackages.go index c0cb03e..dfb8cd6 100644 --- a/vendor/golang.org/x/tools/go/buildutil/allpackages.go +++ b/vendor/golang.org/x/tools/go/buildutil/allpackages.go @@ -28,7 +28,6 @@ import ( // // All I/O is done via the build.Context file system interface, // which must be concurrency-safe. -// func AllPackages(ctxt *build.Context) []string { var list []string ForEachPackage(ctxt, func(pkg string, _ error) { @@ -48,7 +47,6 @@ func AllPackages(ctxt *build.Context) []string { // // All I/O is done via the build.Context file system interface, // which must be concurrency-safe. -// func ForEachPackage(ctxt *build.Context, found func(importPath string, err error)) { ch := make(chan item) @@ -127,19 +125,18 @@ func allPackages(ctxt *build.Context, root string, ch chan<- item) { // ExpandPatterns returns the set of packages matched by patterns, // which may have the following forms: // -// golang.org/x/tools/cmd/guru # a single package -// golang.org/x/tools/... # all packages beneath dir -// ... # the entire workspace. +// golang.org/x/tools/cmd/guru # a single package +// golang.org/x/tools/... # all packages beneath dir +// ... # the entire workspace. // // Order is significant: a pattern preceded by '-' removes matching // packages from the set. For example, these patterns match all encoding // packages except encoding/xml: // -// encoding/... -encoding/xml +// encoding/... -encoding/xml // // A trailing slash in a pattern is ignored. (Path components of Go // package names are separated by slash, not the platform's path separator.) -// func ExpandPatterns(ctxt *build.Context, patterns []string) map[string]bool { // TODO(adonovan): support other features of 'go list': // - "std"/"cmd"/"all" meta-packages diff --git a/vendor/golang.org/x/tools/go/buildutil/fakecontext.go b/vendor/golang.org/x/tools/go/buildutil/fakecontext.go index 8b7f066..15025f6 100644 --- a/vendor/golang.org/x/tools/go/buildutil/fakecontext.go +++ b/vendor/golang.org/x/tools/go/buildutil/fakecontext.go @@ -1,3 +1,7 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package buildutil import ( @@ -26,7 +30,6 @@ import ( // /go/src/ including, for instance, "math" and "math/big". // ReadDir("/go/src/math/big") would return all the files in the // "math/big" package. -// func FakeContext(pkgs map[string]map[string]string) *build.Context { clean := func(filename string) string { f := path.Clean(filepath.ToSlash(filename)) diff --git a/vendor/golang.org/x/tools/go/buildutil/overlay.go b/vendor/golang.org/x/tools/go/buildutil/overlay.go index 8e23908..bdbfd93 100644 --- a/vendor/golang.org/x/tools/go/buildutil/overlay.go +++ b/vendor/golang.org/x/tools/go/buildutil/overlay.go @@ -60,8 +60,7 @@ func OverlayContext(orig *build.Context, overlay map[string][]byte) *build.Conte // ParseOverlayArchive parses an archive containing Go files and their // contents. The result is intended to be used with OverlayContext. // -// -// Archive format +// # Archive format // // The archive consists of a series of files. Each file consists of a // name, a decimal file size and the file contents, separated by diff --git a/vendor/golang.org/x/tools/go/buildutil/tags.go b/vendor/golang.org/x/tools/go/buildutil/tags.go index 486606f..7cf523b 100644 --- a/vendor/golang.org/x/tools/go/buildutil/tags.go +++ b/vendor/golang.org/x/tools/go/buildutil/tags.go @@ -1,3 +1,7 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package buildutil // This logic was copied from stringsFlag from $GOROOT/src/cmd/go/build.go. @@ -16,7 +20,8 @@ const TagsFlagDoc = "a list of `build tags` to consider satisfied during the bui // See $GOROOT/src/cmd/go/doc.go for description of 'go build -tags' flag. // // Example: -// flag.Var((*buildutil.TagsFlag)(&build.Default.BuildTags), "tags", buildutil.TagsFlagDoc) +// +// flag.Var((*buildutil.TagsFlag)(&build.Default.BuildTags), "tags", buildutil.TagsFlagDoc) type TagsFlag []string func (v *TagsFlag) Set(s string) error { diff --git a/vendor/golang.org/x/tools/go/buildutil/util.go b/vendor/golang.org/x/tools/go/buildutil/util.go index fc923d7..d771b18 100644 --- a/vendor/golang.org/x/tools/go/buildutil/util.go +++ b/vendor/golang.org/x/tools/go/buildutil/util.go @@ -28,7 +28,6 @@ import ( // filename that will be attached to the ASTs. // // TODO(adonovan): call this from go/loader.parseFiles when the tree thaws. -// func ParseFile(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, file string, mode parser.Mode) (*ast.File, error) { if !IsAbsPath(ctxt, file) { file = JoinPath(ctxt, dir, file) @@ -51,7 +50,6 @@ func ParseFile(fset *token.FileSet, ctxt *build.Context, displayPath func(string // // The '...Files []string' fields of the resulting build.Package are not // populated (build.FindOnly mode). -// func ContainingPackage(ctxt *build.Context, dir, filename string) (*build.Package, error) { if !IsAbsPath(ctxt, filename) { filename = JoinPath(ctxt, dir, filename) @@ -196,7 +194,6 @@ func SplitPathList(ctxt *build.Context, s string) []string { // sameFile returns true if x and y have the same basename and denote // the same file. -// func sameFile(x, y string) bool { if path.Clean(x) == path.Clean(y) { return true diff --git a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go index f8363d8..2ed25a7 100644 --- a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go +++ b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go @@ -17,32 +17,47 @@ // developer tools, which will then be able to consume both Go 1.7 and // Go 1.8 export data files, so they will work before and after the // Go update. (See discussion at https://golang.org/issue/15651.) -// package gcexportdata // import "golang.org/x/tools/go/gcexportdata" import ( "bufio" "bytes" + "encoding/json" "fmt" "go/token" "go/types" "io" "io/ioutil" + "os/exec" "golang.org/x/tools/go/internal/gcimporter" ) // Find returns the name of an object (.o) or archive (.a) file // containing type information for the specified import path, -// using the workspace layout conventions of go/build. +// using the go command. // If no file was found, an empty filename is returned. // // A relative srcDir is interpreted relative to the current working directory. // // Find also returns the package's resolved (canonical) import path, // reflecting the effects of srcDir and vendoring on importPath. +// +// Deprecated: Use the higher-level API in golang.org/x/tools/go/packages, +// which is more efficient. func Find(importPath, srcDir string) (filename, path string) { - return gcimporter.FindPkg(importPath, srcDir) + cmd := exec.Command("go", "list", "-json", "-export", "--", importPath) + cmd.Dir = srcDir + out, err := cmd.CombinedOutput() + if err != nil { + return "", "" + } + var data struct { + ImportPath string + Export string + } + json.Unmarshal(out, &data) + return data.Export, data.ImportPath } // NewReader returns a reader for the export data section of an object @@ -50,11 +65,24 @@ func Find(importPath, srcDir string) (filename, path string) { // additional trailing data beyond the end of the export data. func NewReader(r io.Reader) (io.Reader, error) { buf := bufio.NewReader(r) - _, err := gcimporter.FindExportData(buf) - // If we ever switch to a zip-like archive format with the ToC - // at the end, we can return the correct portion of export data, - // but for now we must return the entire rest of the file. - return buf, err + _, size, err := gcimporter.FindExportData(buf) + if err != nil { + return nil, err + } + + if size >= 0 { + // We were given an archive and found the __.PKGDEF in it. + // This tells us the size of the export data, and we don't + // need to return the entire file. + return &io.LimitedReader{ + R: buf, + N: size, + }, nil + } else { + // We were given an object file. As such, we don't know how large + // the export data is and must return the entire file. + return buf, nil + } } // Read reads export data from in, decodes it, and returns type @@ -88,22 +116,62 @@ func Read(in io.Reader, fset *token.FileSet, imports map[string]*types.Package, // The indexed export format starts with an 'i'; the older // binary export format starts with a 'c', 'd', or 'v' // (from "version"). Select appropriate importer. - if len(data) > 0 && data[0] == 'i' { - _, pkg, err := gcimporter.IImportData(fset, imports, data[1:], path) - return pkg, err - } + if len(data) > 0 { + switch data[0] { + case 'i': + _, pkg, err := gcimporter.IImportData(fset, imports, data[1:], path) + return pkg, err + + case 'v', 'c', 'd': + _, pkg, err := gcimporter.BImportData(fset, imports, data, path) + return pkg, err - _, pkg, err := gcimporter.BImportData(fset, imports, data, path) - return pkg, err + case 'u': + _, pkg, err := gcimporter.UImportData(fset, imports, data[1:], path) + return pkg, err + + default: + l := len(data) + if l > 10 { + l = 10 + } + return nil, fmt.Errorf("unexpected export data with prefix %q for path %s", string(data[:l]), path) + } + } + return nil, fmt.Errorf("empty export data for %s", path) } // Write writes encoded type information for the specified package to out. // The FileSet provides file position information for named objects. func Write(out io.Writer, fset *token.FileSet, pkg *types.Package) error { - b, err := gcimporter.IExportData(fset, pkg) - if err != nil { + if _, err := io.WriteString(out, "i"); err != nil { return err } - _, err = out.Write(b) - return err + return gcimporter.IExportData(out, fset, pkg) +} + +// ReadBundle reads an export bundle from in, decodes it, and returns type +// information for the packages. +// File position information is added to fset. +// +// ReadBundle may inspect and add to the imports map to ensure that references +// within the export bundle to other packages are consistent. +// +// On return, the state of the reader is undefined. +// +// Experimental: This API is experimental and may change in the future. +func ReadBundle(in io.Reader, fset *token.FileSet, imports map[string]*types.Package) ([]*types.Package, error) { + data, err := ioutil.ReadAll(in) + if err != nil { + return nil, fmt.Errorf("reading export bundle: %v", err) + } + return gcimporter.IImportBundle(fset, imports, data) +} + +// WriteBundle writes encoded type information for the specified packages to out. +// The FileSet provides file position information for named objects. +// +// Experimental: This API is experimental and may change in the future. +func WriteBundle(out io.Writer, fset *token.FileSet, pkgs []*types.Package) error { + return gcimporter.IExportBundle(out, fset, pkgs) } diff --git a/vendor/golang.org/x/tools/go/gcexportdata/importer.go b/vendor/golang.org/x/tools/go/gcexportdata/importer.go index efe221e..37a7247 100644 --- a/vendor/golang.org/x/tools/go/gcexportdata/importer.go +++ b/vendor/golang.org/x/tools/go/gcexportdata/importer.go @@ -23,6 +23,8 @@ import ( // or to control the FileSet or access the imports map populated during // package loading. // +// Deprecated: Use the higher-level API in golang.org/x/tools/go/packages, +// which is more efficient. func NewImporter(fset *token.FileSet, imports map[string]*types.Package) types.ImporterFrom { return importer{fset, imports} } diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go index a807d0a..196cb3f 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go @@ -34,20 +34,19 @@ import ( // (suspected) format errors, and whenever a change is made to the format. const debugFormat = false // default: false -// If trace is set, debugging output is printed to std out. -const trace = false // default: false - // Current export format version. Increase with each format change. +// // Note: The latest binary (non-indexed) export format is at version 6. -// This exporter is still at level 4, but it doesn't matter since -// the binary importer can handle older versions just fine. -// 6: package height (CL 105038) -- NOT IMPLEMENTED HERE -// 5: improved position encoding efficiency (issue 20080, CL 41619) -- NOT IMPLEMEMTED HERE -// 4: type name objects support type aliases, uses aliasTag -// 3: Go1.8 encoding (same as version 2, aliasTag defined but never used) -// 2: removed unused bool in ODCL export (compiler only) -// 1: header format change (more regular), export package for _ struct fields -// 0: Go1.7 encoding +// This exporter is still at level 4, but it doesn't matter since +// the binary importer can handle older versions just fine. +// +// 6: package height (CL 105038) -- NOT IMPLEMENTED HERE +// 5: improved position encoding efficiency (issue 20080, CL 41619) -- NOT IMPLEMENTED HERE +// 4: type name objects support type aliases, uses aliasTag +// 3: Go1.8 encoding (same as version 2, aliasTag defined but never used) +// 2: removed unused bool in ODCL export (compiler only) +// 1: header format change (more regular), export package for _ struct fields +// 0: Go1.7 encoding const exportVersion = 4 // trackAllTypes enables cycle tracking for all types, not just named @@ -92,16 +91,18 @@ func internalErrorf(format string, args ...interface{}) error { // BExportData returns binary export data for pkg. // If no file set is provided, position info will be missing. func BExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) { - defer func() { - if e := recover(); e != nil { - if ierr, ok := e.(internalError); ok { - err = ierr - return + if !debug { + defer func() { + if e := recover(); e != nil { + if ierr, ok := e.(internalError); ok { + err = ierr + return + } + // Not an internal error; panic again. + panic(e) } - // Not an internal error; panic again. - panic(e) - } - }() + }() + } p := exporter{ fset: fset, diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go index e9f73d1..b85de01 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go @@ -74,9 +74,10 @@ func BImportData(fset *token.FileSet, imports map[string]*types.Package, data [] pathList: []string{""}, // empty string is mapped to 0 fake: fakeFileSet{ fset: fset, - files: make(map[string]*token.File), + files: make(map[string]*fileInfo), }, } + defer p.fake.setLines() // set lines for files in fset // read version info var versionstr string @@ -338,37 +339,49 @@ func (p *importer) pos() token.Pos { // Synthesize a token.Pos type fakeFileSet struct { fset *token.FileSet - files map[string]*token.File + files map[string]*fileInfo } +type fileInfo struct { + file *token.File + lastline int +} + +const maxlines = 64 * 1024 + func (s *fakeFileSet) pos(file string, line, column int) token.Pos { // TODO(mdempsky): Make use of column. - // Since we don't know the set of needed file positions, we - // reserve maxlines positions per file. - const maxlines = 64 * 1024 + // Since we don't know the set of needed file positions, we reserve maxlines + // positions per file. We delay calling token.File.SetLines until all + // positions have been calculated (by way of fakeFileSet.setLines), so that + // we can avoid setting unnecessary lines. See also golang/go#46586. f := s.files[file] if f == nil { - f = s.fset.AddFile(file, -1, maxlines) + f = &fileInfo{file: s.fset.AddFile(file, -1, maxlines)} s.files[file] = f - // Allocate the fake linebreak indices on first use. - // TODO(adonovan): opt: save ~512KB using a more complex scheme? - fakeLinesOnce.Do(func() { - fakeLines = make([]int, maxlines) - for i := range fakeLines { - fakeLines[i] = i - } - }) - f.SetLines(fakeLines) } - if line > maxlines { line = 1 } + if line > f.lastline { + f.lastline = line + } - // Treat the file as if it contained only newlines - // and column=1: use the line number as the offset. - return f.Pos(line - 1) + // Return a fake position assuming that f.file consists only of newlines. + return token.Pos(f.file.Base() + line - 1) +} + +func (s *fakeFileSet) setLines() { + fakeLinesOnce.Do(func() { + fakeLines = make([]int, maxlines) + for i := range fakeLines { + fakeLines[i] = i + } + }) + for _, f := range s.files { + f.file.SetLines(fakeLines[:f.lastline]) + } } var ( @@ -1029,6 +1042,7 @@ func predeclared() []types.Type { // used internally by gc; never used by this package or in .a files anyType{}, } + predecl = append(predecl, additionalPredeclared()...) }) return predecl } diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go b/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go index f33dc56..f6437fe 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go @@ -16,7 +16,7 @@ import ( "strings" ) -func readGopackHeader(r *bufio.Reader) (name string, size int, err error) { +func readGopackHeader(r *bufio.Reader) (name string, size int64, err error) { // See $GOROOT/include/ar.h. hdr := make([]byte, 16+12+6+6+8+10+2) _, err = io.ReadFull(r, hdr) @@ -28,7 +28,8 @@ func readGopackHeader(r *bufio.Reader) (name string, size int, err error) { fmt.Printf("header: %s", hdr) } s := strings.TrimSpace(string(hdr[16+12+6+6+8:][:10])) - size, err = strconv.Atoi(s) + length, err := strconv.Atoi(s) + size = int64(length) if err != nil || hdr[len(hdr)-2] != '`' || hdr[len(hdr)-1] != '\n' { err = fmt.Errorf("invalid archive header") return @@ -42,8 +43,8 @@ func readGopackHeader(r *bufio.Reader) (name string, size int, err error) { // file by reading from it. The reader must be positioned at the // start of the file before calling this function. The hdr result // is the string before the export data, either "$$" or "$$B". -// -func FindExportData(r *bufio.Reader) (hdr string, err error) { +// The size result is the length of the export data in bytes, or -1 if not known. +func FindExportData(r *bufio.Reader) (hdr string, size int64, err error) { // Read first line to make sure this is an object file. line, err := r.ReadSlice('\n') if err != nil { @@ -54,7 +55,7 @@ func FindExportData(r *bufio.Reader) (hdr string, err error) { if string(line) == "!\n" { // Archive file. Scan to __.PKGDEF. var name string - if name, _, err = readGopackHeader(r); err != nil { + if name, size, err = readGopackHeader(r); err != nil { return } @@ -70,6 +71,7 @@ func FindExportData(r *bufio.Reader) (hdr string, err error) { err = fmt.Errorf("can't find export data (%v)", err) return } + size -= int64(len(line)) } // Now at __.PKGDEF in archive or still at beginning of file. @@ -86,8 +88,12 @@ func FindExportData(r *bufio.Reader) (hdr string, err error) { err = fmt.Errorf("can't find export data (%v)", err) return } + size -= int64(len(line)) } hdr = string(line) + if size < 0 { + size = -1 + } return } diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go b/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go index 9cf1866..e96c396 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go @@ -29,8 +29,14 @@ import ( "text/scanner" ) -// debugging/development support -const debug = false +const ( + // Enable debug during development: it adds some additional checks, and + // prevents errors from being recovered. + debug = false + + // If trace is set, debugging output is printed to std out. + trace = false +) var pkgExts = [...]string{".a", ".o"} @@ -39,7 +45,6 @@ var pkgExts = [...]string{".a", ".o"} // the build.Default build.Context). A relative srcDir is interpreted // relative to the current working directory. // If no file was found, an empty filename is returned. -// func FindPkg(path, srcDir string) (filename, id string) { if path == "" { return @@ -103,7 +108,6 @@ func FindPkg(path, srcDir string) (filename, id string) { // If packages[id] contains the completely imported package, that package // can be used directly, and there is no need to call this function (but // there is also no harm but for extra time used). -// func ImportData(packages map[string]*types.Package, filename, id string, data io.Reader) (pkg *types.Package, err error) { // support for parser error handling defer func() { @@ -127,7 +131,6 @@ func ImportData(packages map[string]*types.Package, filename, id string, data io // Import imports a gc-generated package given its import path and srcDir, adds // the corresponding package object to the packages map, and returns the object. // The packages map must contain all packages already imported. -// func Import(packages map[string]*types.Package, path, srcDir string, lookup func(path string) (io.ReadCloser, error)) (pkg *types.Package, err error) { var rc io.ReadCloser var filename, id string @@ -178,8 +181,9 @@ func Import(packages map[string]*types.Package, path, srcDir string, lookup func defer rc.Close() var hdr string + var size int64 buf := bufio.NewReader(rc) - if hdr, err = FindExportData(buf); err != nil { + if hdr, size, err = FindExportData(buf); err != nil { return } @@ -207,10 +211,27 @@ func Import(packages map[string]*types.Package, path, srcDir string, lookup func // The indexed export format starts with an 'i'; the older // binary export format starts with a 'c', 'd', or 'v' // (from "version"). Select appropriate importer. - if len(data) > 0 && data[0] == 'i' { - _, pkg, err = IImportData(fset, packages, data[1:], id) - } else { - _, pkg, err = BImportData(fset, packages, data, id) + if len(data) > 0 { + switch data[0] { + case 'i': + _, pkg, err := IImportData(fset, packages, data[1:], id) + return pkg, err + + case 'v', 'c', 'd': + _, pkg, err := BImportData(fset, packages, data, id) + return pkg, err + + case 'u': + _, pkg, err := UImportData(fset, packages, data[1:size], id) + return pkg, err + + default: + l := len(data) + if l > 10 { + l = 10 + } + return nil, fmt.Errorf("unexpected export data with prefix %q for path %s", string(data[:l]), id) + } } default: @@ -342,9 +363,10 @@ func (p *parser) expectKeyword(keyword string) { // ---------------------------------------------------------------------------- // Qualified and unqualified names -// PackageId = string_lit . +// parsePackageID parses a PackageId: // -func (p *parser) parsePackageId() string { +// PackageId = string_lit . +func (p *parser) parsePackageID() string { id, err := strconv.Unquote(p.expect(scanner.String)) if err != nil { p.error(err) @@ -357,13 +379,16 @@ func (p *parser) parsePackageId() string { return id } -// PackageName = ident . +// parsePackageName parse a PackageName: // +// PackageName = ident . func (p *parser) parsePackageName() string { return p.expect(scanner.Ident) } -// dotIdentifier = ( ident | 'Β·' ) { ident | int | 'Β·' } . +// parseDotIdent parses a dotIdentifier: +// +// dotIdentifier = ( ident | 'Β·' ) { ident | int | 'Β·' } . func (p *parser) parseDotIdent() string { ident := "" if p.tok != scanner.Int { @@ -380,11 +405,12 @@ func (p *parser) parseDotIdent() string { return ident } -// QualifiedName = "@" PackageId "." ( "?" | dotIdentifier ) . +// parseQualifiedName parses a QualifiedName: // +// QualifiedName = "@" PackageId "." ( "?" | dotIdentifier ) . func (p *parser) parseQualifiedName() (id, name string) { p.expect('@') - id = p.parsePackageId() + id = p.parsePackageID() p.expect('.') // Per rev f280b8a485fd (10/2/2013), qualified names may be used for anonymous fields. if p.tok == '?' { @@ -404,7 +430,6 @@ func (p *parser) parseQualifiedName() (id, name string) { // id identifies a package, usually by a canonical package path like // "encoding/json" but possibly by a non-canonical import path like // "./json". -// func (p *parser) getPkg(id, name string) *types.Package { // package unsafe is not in the packages maps - handle explicitly if id == "unsafe" { @@ -440,7 +465,6 @@ func (p *parser) getPkg(id, name string) *types.Package { // parseExportedName is like parseQualifiedName, but // the package id is resolved to an imported *types.Package. -// func (p *parser) parseExportedName() (pkg *types.Package, name string) { id, name := p.parseQualifiedName() pkg = p.getPkg(id, "") @@ -450,8 +474,9 @@ func (p *parser) parseExportedName() (pkg *types.Package, name string) { // ---------------------------------------------------------------------------- // Types -// BasicType = identifier . +// parseBasicType parses a BasicType: // +// BasicType = identifier . func (p *parser) parseBasicType() types.Type { id := p.expect(scanner.Ident) obj := types.Universe.Lookup(id) @@ -462,8 +487,9 @@ func (p *parser) parseBasicType() types.Type { return nil } -// ArrayType = "[" int_lit "]" Type . +// parseArrayType parses an ArrayType: // +// ArrayType = "[" int_lit "]" Type . func (p *parser) parseArrayType(parent *types.Package) types.Type { // "[" already consumed and lookahead known not to be "]" lit := p.expect(scanner.Int) @@ -476,8 +502,9 @@ func (p *parser) parseArrayType(parent *types.Package) types.Type { return types.NewArray(elem, n) } -// MapType = "map" "[" Type "]" Type . +// parseMapType parses a MapType: // +// MapType = "map" "[" Type "]" Type . func (p *parser) parseMapType(parent *types.Package) types.Type { p.expectKeyword("map") p.expect('[') @@ -487,11 +514,13 @@ func (p *parser) parseMapType(parent *types.Package) types.Type { return types.NewMap(key, elem) } -// Name = identifier | "?" | QualifiedName . +// parseName parses a Name: +// +// Name = identifier | "?" | QualifiedName . // // For unqualified and anonymous names, the returned package is the parent // package unless parent == nil, in which case the returned package is the -// package being imported. (The parent package is not nil if the the name +// package being imported. (The parent package is not nil if the name // is an unqualified struct field or interface method name belonging to a // type declared in another package.) // @@ -499,7 +528,6 @@ func (p *parser) parseMapType(parent *types.Package) types.Type { // it doesn't exist yet) unless materializePkg is set (which creates an // unnamed package with valid package path). In the latter case, a // subsequent import clause is expected to provide a name for the package. -// func (p *parser) parseName(parent *types.Package, materializePkg bool) (pkg *types.Package, name string) { pkg = parent if pkg == nil { @@ -533,8 +561,9 @@ func deref(typ types.Type) types.Type { return typ } -// Field = Name Type [ string_lit ] . +// parseField parses a Field: // +// Field = Name Type [ string_lit ] . func (p *parser) parseField(parent *types.Package) (*types.Var, string) { pkg, name := p.parseName(parent, true) @@ -577,9 +606,10 @@ func (p *parser) parseField(parent *types.Package) (*types.Var, string) { return types.NewField(token.NoPos, pkg, name, typ, anonymous), tag } -// StructType = "struct" "{" [ FieldList ] "}" . -// FieldList = Field { ";" Field } . +// parseStructType parses a StructType: // +// StructType = "struct" "{" [ FieldList ] "}" . +// FieldList = Field { ";" Field } . func (p *parser) parseStructType(parent *types.Package) types.Type { var fields []*types.Var var tags []string @@ -604,8 +634,9 @@ func (p *parser) parseStructType(parent *types.Package) types.Type { return types.NewStruct(fields, tags) } -// Parameter = ( identifier | "?" ) [ "..." ] Type [ string_lit ] . +// parseParameter parses a Parameter: // +// Parameter = ( identifier | "?" ) [ "..." ] Type [ string_lit ] . func (p *parser) parseParameter() (par *types.Var, isVariadic bool) { _, name := p.parseName(nil, false) // remove gc-specific parameter numbering @@ -629,9 +660,10 @@ func (p *parser) parseParameter() (par *types.Var, isVariadic bool) { return } -// Parameters = "(" [ ParameterList ] ")" . -// ParameterList = { Parameter "," } Parameter . +// parseParameters parses a Parameters: // +// Parameters = "(" [ ParameterList ] ")" . +// ParameterList = { Parameter "," } Parameter . func (p *parser) parseParameters() (list []*types.Var, isVariadic bool) { p.expect('(') for p.tok != ')' && p.tok != scanner.EOF { @@ -652,9 +684,10 @@ func (p *parser) parseParameters() (list []*types.Var, isVariadic bool) { return } -// Signature = Parameters [ Result ] . -// Result = Type | Parameters . +// parseSignature parses a Signature: // +// Signature = Parameters [ Result ] . +// Result = Type | Parameters . func (p *parser) parseSignature(recv *types.Var) *types.Signature { params, isVariadic := p.parseParameters() @@ -671,14 +704,15 @@ func (p *parser) parseSignature(recv *types.Var) *types.Signature { return types.NewSignature(recv, types.NewTuple(params...), types.NewTuple(results...), isVariadic) } -// InterfaceType = "interface" "{" [ MethodList ] "}" . -// MethodList = Method { ";" Method } . -// Method = Name Signature . +// parseInterfaceType parses an InterfaceType: +// +// InterfaceType = "interface" "{" [ MethodList ] "}" . +// MethodList = Method { ";" Method } . +// Method = Name Signature . // // The methods of embedded interfaces are always "inlined" // by the compiler and thus embedded interfaces are never // visible in the export data. -// func (p *parser) parseInterfaceType(parent *types.Package) types.Type { var methods []*types.Func @@ -696,11 +730,12 @@ func (p *parser) parseInterfaceType(parent *types.Package) types.Type { // Complete requires the type's embedded interfaces to be fully defined, // but we do not define any - return types.NewInterface(methods, nil).Complete() + return newInterface(methods, nil).Complete() } -// ChanType = ( "chan" [ "<-" ] | "<-" "chan" ) Type . +// parseChanType parses a ChanType: // +// ChanType = ( "chan" [ "<-" ] | "<-" "chan" ) Type . func (p *parser) parseChanType(parent *types.Package) types.Type { dir := types.SendRecv if p.tok == scanner.Ident { @@ -718,17 +753,18 @@ func (p *parser) parseChanType(parent *types.Package) types.Type { return types.NewChan(dir, elem) } -// Type = -// BasicType | TypeName | ArrayType | SliceType | StructType | -// PointerType | FuncType | InterfaceType | MapType | ChanType | -// "(" Type ")" . +// parseType parses a Type: // -// BasicType = ident . -// TypeName = ExportedName . -// SliceType = "[" "]" Type . -// PointerType = "*" Type . -// FuncType = "func" Signature . +// Type = +// BasicType | TypeName | ArrayType | SliceType | StructType | +// PointerType | FuncType | InterfaceType | MapType | ChanType | +// "(" Type ")" . // +// BasicType = ident . +// TypeName = ExportedName . +// SliceType = "[" "]" Type . +// PointerType = "*" Type . +// FuncType = "func" Signature . func (p *parser) parseType(parent *types.Package) types.Type { switch p.tok { case scanner.Ident: @@ -780,16 +816,18 @@ func (p *parser) parseType(parent *types.Package) types.Type { // ---------------------------------------------------------------------------- // Declarations -// ImportDecl = "import" PackageName PackageId . +// parseImportDecl parses an ImportDecl: // +// ImportDecl = "import" PackageName PackageId . func (p *parser) parseImportDecl() { p.expectKeyword("import") name := p.parsePackageName() - p.getPkg(p.parsePackageId(), name) + p.getPkg(p.parsePackageID(), name) } -// int_lit = [ "+" | "-" ] { "0" ... "9" } . +// parseInt parses an int_lit: // +// int_lit = [ "+" | "-" ] { "0" ... "9" } . func (p *parser) parseInt() string { s := "" switch p.tok { @@ -802,8 +840,9 @@ func (p *parser) parseInt() string { return s + p.expect(scanner.Int) } -// number = int_lit [ "p" int_lit ] . +// parseNumber parses a number: // +// number = int_lit [ "p" int_lit ] . func (p *parser) parseNumber() (typ *types.Basic, val constant.Value) { // mantissa mant := constant.MakeFromLiteral(p.parseInt(), token.INT, 0) @@ -838,13 +877,14 @@ func (p *parser) parseNumber() (typ *types.Basic, val constant.Value) { return } -// ConstDecl = "const" ExportedName [ Type ] "=" Literal . -// Literal = bool_lit | int_lit | float_lit | complex_lit | rune_lit | string_lit . -// bool_lit = "true" | "false" . -// complex_lit = "(" float_lit "+" float_lit "i" ")" . -// rune_lit = "(" int_lit "+" int_lit ")" . -// string_lit = `"` { unicode_char } `"` . +// parseConstDecl parses a ConstDecl: // +// ConstDecl = "const" ExportedName [ Type ] "=" Literal . +// Literal = bool_lit | int_lit | float_lit | complex_lit | rune_lit | string_lit . +// bool_lit = "true" | "false" . +// complex_lit = "(" float_lit "+" float_lit "i" ")" . +// rune_lit = "(" int_lit "+" int_lit ")" . +// string_lit = `"` { unicode_char } `"` . func (p *parser) parseConstDecl() { p.expectKeyword("const") pkg, name := p.parseExportedName() @@ -914,8 +954,9 @@ func (p *parser) parseConstDecl() { pkg.Scope().Insert(types.NewConst(token.NoPos, pkg, name, typ0, val)) } -// TypeDecl = "type" ExportedName Type . +// parseTypeDecl parses a TypeDecl: // +// TypeDecl = "type" ExportedName Type . func (p *parser) parseTypeDecl() { p.expectKeyword("type") pkg, name := p.parseExportedName() @@ -933,8 +974,9 @@ func (p *parser) parseTypeDecl() { } } -// VarDecl = "var" ExportedName Type . +// parseVarDecl parses a VarDecl: // +// VarDecl = "var" ExportedName Type . func (p *parser) parseVarDecl() { p.expectKeyword("var") pkg, name := p.parseExportedName() @@ -942,9 +984,10 @@ func (p *parser) parseVarDecl() { pkg.Scope().Insert(types.NewVar(token.NoPos, pkg, name, typ)) } -// Func = Signature [ Body ] . -// Body = "{" ... "}" . +// parseFunc parses a Func: // +// Func = Signature [ Body ] . +// Body = "{" ... "}" . func (p *parser) parseFunc(recv *types.Var) *types.Signature { sig := p.parseSignature(recv) if p.tok == '{' { @@ -961,9 +1004,10 @@ func (p *parser) parseFunc(recv *types.Var) *types.Signature { return sig } -// MethodDecl = "func" Receiver Name Func . -// Receiver = "(" ( identifier | "?" ) [ "*" ] ExportedName ")" . +// parseMethodDecl parses a MethodDecl: // +// MethodDecl = "func" Receiver Name Func . +// Receiver = "(" ( identifier | "?" ) [ "*" ] ExportedName ")" . func (p *parser) parseMethodDecl() { // "func" already consumed p.expect('(') @@ -986,8 +1030,9 @@ func (p *parser) parseMethodDecl() { base.AddMethod(types.NewFunc(token.NoPos, pkg, name, sig)) } -// FuncDecl = "func" ExportedName Func . +// parseFuncDecl parses a FuncDecl: // +// FuncDecl = "func" ExportedName Func . func (p *parser) parseFuncDecl() { // "func" already consumed pkg, name := p.parseExportedName() @@ -995,8 +1040,9 @@ func (p *parser) parseFuncDecl() { pkg.Scope().Insert(types.NewFunc(token.NoPos, pkg, name, typ)) } -// Decl = [ ImportDecl | ConstDecl | TypeDecl | VarDecl | FuncDecl | MethodDecl ] "\n" . +// parseDecl parses a Decl: // +// Decl = [ ImportDecl | ConstDecl | TypeDecl | VarDecl | FuncDecl | MethodDecl ] "\n" . func (p *parser) parseDecl() { if p.tok == scanner.Ident { switch p.lit { @@ -1023,9 +1069,10 @@ func (p *parser) parseDecl() { // ---------------------------------------------------------------------------- // Export -// Export = "PackageClause { Decl } "$$" . -// PackageClause = "package" PackageName [ "safe" ] "\n" . +// parseExport parses an Export: // +// Export = "PackageClause { Decl } "$$" . +// PackageClause = "package" PackageName [ "safe" ] "\n" . func (p *parser) parseExport() *types.Package { p.expectKeyword("package") name := p.parsePackageName() diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go index 4be32a2..9a4ff32 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go @@ -11,6 +11,7 @@ package gcimporter import ( "bytes" "encoding/binary" + "fmt" "go/ast" "go/constant" "go/token" @@ -19,37 +20,55 @@ import ( "math/big" "reflect" "sort" + "strconv" + "strings" + + "golang.org/x/tools/internal/typeparams" ) -// Current indexed export format version. Increase with each format change. -// 0: Go1.11 encoding -const iexportVersion = 0 +// Current bundled export format version. Increase with each format change. +// 0: initial implementation +const bundleVersion = 0 -// IExportData returns the binary export data for pkg. +// IExportData writes indexed export data for pkg to out. // // If no file set is provided, position info will be missing. // The package path of the top-level package will not be recorded, // so that calls to IImportData can override with a provided package path. -func IExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) { - defer func() { - if e := recover(); e != nil { - if ierr, ok := e.(internalError); ok { - err = ierr - return +func IExportData(out io.Writer, fset *token.FileSet, pkg *types.Package) error { + return iexportCommon(out, fset, false, iexportVersion, []*types.Package{pkg}) +} + +// IExportBundle writes an indexed export bundle for pkgs to out. +func IExportBundle(out io.Writer, fset *token.FileSet, pkgs []*types.Package) error { + return iexportCommon(out, fset, true, iexportVersion, pkgs) +} + +func iexportCommon(out io.Writer, fset *token.FileSet, bundle bool, version int, pkgs []*types.Package) (err error) { + if !debug { + defer func() { + if e := recover(); e != nil { + if ierr, ok := e.(internalError); ok { + err = ierr + return + } + // Not an internal error; panic again. + panic(e) } - // Not an internal error; panic again. - panic(e) - } - }() + }() + } p := iexporter{ - out: bytes.NewBuffer(nil), fset: fset, + version: version, allPkgs: map[*types.Package]bool{}, stringIndex: map[string]uint64{}, declIndex: map[types.Object]uint64{}, + tparamNames: map[types.Object]string{}, typIndex: map[types.Type]uint64{}, - localpkg: pkg, + } + if !bundle { + p.localpkg = pkgs[0] } for i, pt := range predeclared() { @@ -60,10 +79,20 @@ func IExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) } // Initialize work queue with exported declarations. - scope := pkg.Scope() - for _, name := range scope.Names() { - if ast.IsExported(name) { - p.pushDecl(scope.Lookup(name)) + for _, pkg := range pkgs { + scope := pkg.Scope() + for _, name := range scope.Names() { + if ast.IsExported(name) { + p.pushDecl(scope.Lookup(name)) + } + } + + if bundle { + // Ensure pkg and its imports are included in the index. + p.allPkgs[pkg] = true + for _, imp := range pkg.Imports() { + p.allPkgs[imp] = true + } } } @@ -76,21 +105,35 @@ func IExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) dataLen := uint64(p.data0.Len()) w := p.newWriter() w.writeIndex(p.declIndex) + + if bundle { + w.uint64(uint64(len(pkgs))) + for _, pkg := range pkgs { + w.pkg(pkg) + imps := pkg.Imports() + w.uint64(uint64(len(imps))) + for _, imp := range imps { + w.pkg(imp) + } + } + } w.flush() // Assemble header. var hdr intWriter - hdr.WriteByte('i') - hdr.uint64(iexportVersion) + if bundle { + hdr.uint64(bundleVersion) + } + hdr.uint64(uint64(p.version)) hdr.uint64(uint64(p.strings.Len())) hdr.uint64(dataLen) // Flush output. - io.Copy(p.out, &hdr) - io.Copy(p.out, &p.strings) - io.Copy(p.out, &p.data0) + io.Copy(out, &hdr) + io.Copy(out, &p.strings) + io.Copy(out, &p.data0) - return p.out.Bytes(), nil + return nil } // writeIndex writes out an object index. mainIndex indicates whether @@ -98,19 +141,26 @@ func IExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) // non-compiler tools and includes a complete package description // (i.e., name and height). func (w *exportWriter) writeIndex(index map[types.Object]uint64) { + type pkgObj struct { + obj types.Object + name string // qualified name; differs from obj.Name for type params + } // Build a map from packages to objects from that package. - pkgObjs := map[*types.Package][]types.Object{} + pkgObjs := map[*types.Package][]pkgObj{} // For the main index, make sure to include every package that // we reference, even if we're not exporting (or reexporting) // any symbols from it. - pkgObjs[w.p.localpkg] = nil + if w.p.localpkg != nil { + pkgObjs[w.p.localpkg] = nil + } for pkg := range w.p.allPkgs { pkgObjs[pkg] = nil } for obj := range index { - pkgObjs[obj.Pkg()] = append(pkgObjs[obj.Pkg()], obj) + name := w.p.exportName(obj) + pkgObjs[obj.Pkg()] = append(pkgObjs[obj.Pkg()], pkgObj{obj, name}) } var pkgs []*types.Package @@ -118,7 +168,7 @@ func (w *exportWriter) writeIndex(index map[types.Object]uint64) { pkgs = append(pkgs, pkg) sort.Slice(objs, func(i, j int) bool { - return objs[i].Name() < objs[j].Name() + return objs[i].name < objs[j].name }) } @@ -135,15 +185,25 @@ func (w *exportWriter) writeIndex(index map[types.Object]uint64) { objs := pkgObjs[pkg] w.uint64(uint64(len(objs))) for _, obj := range objs { - w.string(obj.Name()) - w.uint64(index[obj]) + w.string(obj.name) + w.uint64(index[obj.obj]) } } } +// exportName returns the 'exported' name of an object. It differs from +// obj.Name() only for type parameters (see tparamExportName for details). +func (p *iexporter) exportName(obj types.Object) (res string) { + if name := p.tparamNames[obj]; name != "" { + return name + } + return obj.Name() +} + type iexporter struct { - fset *token.FileSet - out *bytes.Buffer + fset *token.FileSet + out *bytes.Buffer + version int localpkg *types.Package @@ -157,9 +217,21 @@ type iexporter struct { strings intWriter stringIndex map[string]uint64 - data0 intWriter - declIndex map[types.Object]uint64 - typIndex map[types.Type]uint64 + data0 intWriter + declIndex map[types.Object]uint64 + tparamNames map[types.Object]string // typeparam->exported name + typIndex map[types.Type]uint64 + + indent int // for tracing support +} + +func (p *iexporter) trace(format string, args ...interface{}) { + if !trace { + // Call sites should also be guarded, but having this check here allows + // easily enabling/disabling debug trace statements. + return + } + fmt.Printf(strings.Repeat("..", p.indent)+format+"\n", args...) } // stringOff returns the offset of s within the string section. @@ -179,13 +251,16 @@ func (p *iexporter) stringOff(s string) uint64 { // pushDecl adds n to the declaration work queue, if not already present. func (p *iexporter) pushDecl(obj types.Object) { // Package unsafe is known to the compiler and predeclared. - assert(obj.Pkg() != types.Unsafe) + // Caller should not ask us to do export it. + if obj.Pkg() == types.Unsafe { + panic("cannot export package unsafe") + } if _, ok := p.declIndex[obj]; ok { return } - p.declIndex[obj] = ^uint64(0) // mark n present in work queue + p.declIndex[obj] = ^uint64(0) // mark obj present in work queue p.declTodo.pushTail(obj) } @@ -193,10 +268,11 @@ func (p *iexporter) pushDecl(obj types.Object) { type exportWriter struct { p *iexporter - data intWriter - currPkg *types.Package - prevFile string - prevLine int64 + data intWriter + currPkg *types.Package + prevFile string + prevLine int64 + prevColumn int64 } func (w *exportWriter) exportPath(pkg *types.Package) string { @@ -207,6 +283,14 @@ func (w *exportWriter) exportPath(pkg *types.Package) string { } func (p *iexporter) doDecl(obj types.Object) { + if trace { + p.trace("exporting decl %v (%T)", obj, obj) + p.indent++ + defer func() { + p.indent-- + p.trace("=> %s", obj) + }() + } w := p.newWriter() w.setPkg(obj.Pkg(), false) @@ -221,8 +305,24 @@ func (p *iexporter) doDecl(obj types.Object) { if sig.Recv() != nil { panic(internalErrorf("unexpected method: %v", sig)) } - w.tag('F') + + // Function. + if typeparams.ForSignature(sig).Len() == 0 { + w.tag('F') + } else { + w.tag('G') + } w.pos(obj.Pos()) + // The tparam list of the function type is the declaration of the type + // params. So, write out the type params right now. Then those type params + // will be referenced via their type offset (via typOff) in all other + // places in the signature and function where they are used. + // + // While importing the type parameters, tparamList computes and records + // their export name, so that it can be later used when writing the index. + if tparams := typeparams.ForSignature(sig); tparams.Len() > 0 { + w.tparamList(obj.Name(), tparams, obj.Pkg()) + } w.signature(sig) case *types.Const: @@ -231,30 +331,56 @@ func (p *iexporter) doDecl(obj types.Object) { w.value(obj.Type(), obj.Val()) case *types.TypeName: + t := obj.Type() + + if tparam, ok := t.(*typeparams.TypeParam); ok { + w.tag('P') + w.pos(obj.Pos()) + constraint := tparam.Constraint() + if p.version >= iexportVersionGo1_18 { + implicit := false + if iface, _ := constraint.(*types.Interface); iface != nil { + implicit = typeparams.IsImplicit(iface) + } + w.bool(implicit) + } + w.typ(constraint, obj.Pkg()) + break + } + if obj.IsAlias() { w.tag('A') w.pos(obj.Pos()) - w.typ(obj.Type(), obj.Pkg()) + w.typ(t, obj.Pkg()) break } // Defined type. - w.tag('T') + named, ok := t.(*types.Named) + if !ok { + panic(internalErrorf("%s is not a defined type", t)) + } + + if typeparams.ForNamed(named).Len() == 0 { + w.tag('T') + } else { + w.tag('U') + } w.pos(obj.Pos()) + if typeparams.ForNamed(named).Len() > 0 { + // While importing the type parameters, tparamList computes and records + // their export name, so that it can be later used when writing the index. + w.tparamList(obj.Name(), typeparams.ForNamed(named), obj.Pkg()) + } + underlying := obj.Type().Underlying() w.typ(underlying, obj.Pkg()) - t := obj.Type() if types.IsInterface(t) { break } - named, ok := t.(*types.Named) - if !ok { - panic(internalErrorf("%s is not a defined type", t)) - } - n := named.NumMethods() w.uint64(uint64(n)) for i := 0; i < n; i++ { @@ -262,6 +388,17 @@ func (p *iexporter) doDecl(obj types.Object) { w.pos(m.Pos()) w.string(m.Name()) sig, _ := m.Type().(*types.Signature) + + // Receiver type parameters are type arguments of the receiver type, so + // their name must be qualified before exporting recv. + if rparams := typeparams.RecvTypeParams(sig); rparams.Len() > 0 { + prefix := obj.Name() + "." + m.Name() + for i := 0; i < rparams.Len(); i++ { + rparam := rparams.At(i) + name := tparamExportName(prefix, rparam) + w.p.tparamNames[rparam.Obj()] = name + } + } w.param(sig.Recv()) w.signature(sig) } @@ -278,6 +415,48 @@ func (w *exportWriter) tag(tag byte) { } func (w *exportWriter) pos(pos token.Pos) { + if w.p.version >= iexportVersionPosCol { + w.posV1(pos) + } else { + w.posV0(pos) + } +} + +func (w *exportWriter) posV1(pos token.Pos) { + if w.p.fset == nil { + w.int64(0) + return + } + + p := w.p.fset.Position(pos) + file := p.Filename + line := int64(p.Line) + column := int64(p.Column) + + deltaColumn := (column - w.prevColumn) << 1 + deltaLine := (line - w.prevLine) << 1 + + if file != w.prevFile { + deltaLine |= 1 + } + if deltaLine != 0 { + deltaColumn |= 1 + } + + w.int64(deltaColumn) + if deltaColumn&1 != 0 { + w.int64(deltaLine) + if deltaLine&1 != 0 { + w.string(file) + } + } + + w.prevFile = file + w.prevLine = line + w.prevColumn = column +} + +func (w *exportWriter) posV0(pos token.Pos) { if w.p.fset == nil { w.int64(0) return @@ -319,10 +498,11 @@ func (w *exportWriter) pkg(pkg *types.Package) { } func (w *exportWriter) qualifiedIdent(obj types.Object) { + name := w.p.exportName(obj) + // Ensure any referenced declarations are written out too. w.p.pushDecl(obj) - - w.string(obj.Name()) + w.string(name) w.pkg(obj.Pkg()) } @@ -356,11 +536,32 @@ func (w *exportWriter) startType(k itag) { } func (w *exportWriter) doTyp(t types.Type, pkg *types.Package) { + if trace { + w.p.trace("exporting type %s (%T)", t, t) + w.p.indent++ + defer func() { + w.p.indent-- + w.p.trace("=> %s", t) + }() + } switch t := t.(type) { case *types.Named: + if targs := typeparams.NamedTypeArgs(t); targs.Len() > 0 { + w.startType(instanceType) + // TODO(rfindley): investigate if this position is correct, and if it + // matters. + w.pos(t.Obj().Pos()) + w.typeList(targs, pkg) + w.typ(typeparams.NamedTypeOrigin(t), pkg) + return + } w.startType(definedType) w.qualifiedIdent(t.Obj()) + case *typeparams.TypeParam: + w.startType(typeParamType) + w.qualifiedIdent(t.Obj()) + case *types.Pointer: w.startType(pointerType) w.typ(t.Elem(), pkg) @@ -421,9 +622,14 @@ func (w *exportWriter) doTyp(t types.Type, pkg *types.Package) { n := t.NumEmbeddeds() w.uint64(uint64(n)) for i := 0; i < n; i++ { - f := t.Embedded(i) - w.pos(f.Obj().Pos()) - w.typ(f.Obj().Type(), f.Obj().Pkg()) + ft := t.EmbeddedType(i) + tPkg := pkg + if named, _ := ft.(*types.Named); named != nil { + w.pos(named.Obj().Pos()) + } else { + w.pos(token.NoPos) + } + w.typ(ft, tPkg) } n = t.NumExplicitMethods() @@ -436,6 +642,16 @@ func (w *exportWriter) doTyp(t types.Type, pkg *types.Package) { w.signature(sig) } + case *typeparams.Union: + w.startType(unionType) + nt := t.Len() + w.uint64(uint64(nt)) + for i := 0; i < nt; i++ { + term := t.Term(i) + w.bool(term.Tilde()) + w.typ(term.Type(), pkg) + } + default: panic(internalErrorf("unexpected type: %v, %v", t, reflect.TypeOf(t))) } @@ -457,6 +673,56 @@ func (w *exportWriter) signature(sig *types.Signature) { } } +func (w *exportWriter) typeList(ts *typeparams.TypeList, pkg *types.Package) { + w.uint64(uint64(ts.Len())) + for i := 0; i < ts.Len(); i++ { + w.typ(ts.At(i), pkg) + } +} + +func (w *exportWriter) tparamList(prefix string, list *typeparams.TypeParamList, pkg *types.Package) { + ll := uint64(list.Len()) + w.uint64(ll) + for i := 0; i < list.Len(); i++ { + tparam := list.At(i) + // Set the type parameter exportName before exporting its type. + exportName := tparamExportName(prefix, tparam) + w.p.tparamNames[tparam.Obj()] = exportName + w.typ(list.At(i), pkg) + } +} + +const blankMarker = "$" + +// tparamExportName returns the 'exported' name of a type parameter, which +// differs from its actual object name: it is prefixed with a qualifier, and +// blank type parameter names are disambiguated by their index in the type +// parameter list. +func tparamExportName(prefix string, tparam *typeparams.TypeParam) string { + assert(prefix != "") + name := tparam.Obj().Name() + if name == "_" { + name = blankMarker + strconv.Itoa(tparam.Index()) + } + return prefix + "." + name +} + +// tparamName returns the real name of a type parameter, after stripping its +// qualifying prefix and reverting blank-name encoding. See tparamExportName +// for details. +func tparamName(exportName string) string { + // Remove the "path" from the type param name that makes it unique. + ix := strings.LastIndex(exportName, ".") + if ix < 0 { + errorf("malformed type parameter export name %s: missing prefix", exportName) + } + name := exportName[ix+1:] + if strings.HasPrefix(name, blankMarker) { + return "_" + } + return name +} + func (w *exportWriter) paramList(tup *types.Tuple) { n := tup.Len() w.uint64(uint64(n)) @@ -473,11 +739,14 @@ func (w *exportWriter) param(obj types.Object) { func (w *exportWriter) value(typ types.Type, v constant.Value) { w.typ(typ, nil) + if w.p.version >= iexportVersionGo1_18 { + w.int64(int64(v.Kind())) + } - switch v.Kind() { - case constant.Bool: + switch b := typ.Underlying().(*types.Basic); b.Info() & types.IsConstType { + case types.IsBoolean: w.bool(constant.BoolVal(v)) - case constant.Int: + case types.IsInteger: var i big.Int if i64, exact := constant.Int64Val(v); exact { i.SetInt64(i64) @@ -487,25 +756,27 @@ func (w *exportWriter) value(typ types.Type, v constant.Value) { i.SetString(v.ExactString(), 10) } w.mpint(&i, typ) - case constant.Float: + case types.IsFloat: f := constantToFloat(v) w.mpfloat(f, typ) - case constant.Complex: + case types.IsComplex: w.mpfloat(constantToFloat(constant.Real(v)), typ) w.mpfloat(constantToFloat(constant.Imag(v)), typ) - case constant.String: + case types.IsString: w.string(constant.StringVal(v)) - case constant.Unknown: - // package contains type errors default: - panic(internalErrorf("unexpected value %v (%T)", v, v)) + if b.Kind() == types.Invalid { + // package contains type errors + break + } + panic(internalErrorf("unexpected type %v (%v)", typ, typ.Underlying())) } } // constantToFloat converts a constant.Value with kind constant.Float to a // big.Float. func constantToFloat(x constant.Value) *big.Float { - assert(x.Kind() == constant.Float) + x = constant.ToFloat(x) // Use the same floating-point precision (512) as cmd/compile // (see Mpprec in cmd/compile/internal/gc/mpfloat.go). const mpprec = 512 diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go index a31a880..4caa0f5 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go @@ -17,7 +17,11 @@ import ( "go/token" "go/types" "io" + "math/big" "sort" + "strings" + + "golang.org/x/tools/internal/typeparams" ) type intReader struct { @@ -41,6 +45,19 @@ func (r *intReader) uint64() uint64 { return i } +// Keep this in sync with constants in iexport.go. +const ( + iexportVersionGo1_11 = 0 + iexportVersionPosCol = 1 + iexportVersionGo1_18 = 2 + iexportVersionGenerics = 2 +) + +type ident struct { + pkg *types.Package + name string +} + const predeclReserved = 32 type itag uint64 @@ -56,32 +73,65 @@ const ( signatureType structType interfaceType + typeParamType + instanceType + unionType ) // IImportData imports a package from the serialized package data -// and returns the number of bytes consumed and a reference to the package. +// and returns 0 and a reference to the package. // If the export data version is not recognized or the format is otherwise // compromised, an error is returned. -func IImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (_ int, pkg *types.Package, err error) { +func IImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (int, *types.Package, error) { + pkgs, err := iimportCommon(fset, imports, data, false, path) + if err != nil { + return 0, nil, err + } + return 0, pkgs[0], nil +} + +// IImportBundle imports a set of packages from the serialized package bundle. +func IImportBundle(fset *token.FileSet, imports map[string]*types.Package, data []byte) ([]*types.Package, error) { + return iimportCommon(fset, imports, data, true, "") +} + +func iimportCommon(fset *token.FileSet, imports map[string]*types.Package, data []byte, bundle bool, path string) (pkgs []*types.Package, err error) { const currentVersion = 1 version := int64(-1) - defer func() { - if e := recover(); e != nil { - if version > currentVersion { - err = fmt.Errorf("cannot import %q (%v), export data is newer version - update tool", path, e) - } else { - err = fmt.Errorf("cannot import %q (%v), possibly version skew - reinstall package", path, e) + if !debug { + defer func() { + if e := recover(); e != nil { + if bundle { + err = fmt.Errorf("%v", e) + } else if version > currentVersion { + err = fmt.Errorf("cannot import %q (%v), export data is newer version - update tool", path, e) + } else { + err = fmt.Errorf("cannot import %q (%v), possibly version skew - reinstall package", path, e) + } } - } - }() + }() + } r := &intReader{bytes.NewReader(data), path} + if bundle { + bundleVersion := r.uint64() + switch bundleVersion { + case bundleVersion: + default: + errorf("unknown bundle format version %d", bundleVersion) + } + } + version = int64(r.uint64()) switch version { - case currentVersion, 0: + case iexportVersionGo1_18, iexportVersionPosCol, iexportVersionGo1_11: default: - errorf("unknown iexport format version %d", version) + if version > iexportVersionGo1_18 { + errorf("unstable iexport format version %d, just rebuild compiler and std library", version) + } else { + errorf("unknown iexport format version %d", version) + } } sLen := int64(r.uint64()) @@ -93,8 +143,8 @@ func IImportData(fset *token.FileSet, imports map[string]*types.Package, data [] r.Seek(sLen+dLen, io.SeekCurrent) p := iimporter{ - ipath: path, version: int(version), + ipath: path, stringData: stringData, stringCache: make(map[uint64]string), @@ -103,12 +153,16 @@ func IImportData(fset *token.FileSet, imports map[string]*types.Package, data [] declData: declData, pkgIndex: make(map[*types.Package]map[string]uint64), typCache: make(map[uint64]types.Type), + // Separate map for typeparams, keyed by their package and unique + // name. + tparamIndex: make(map[ident]types.Type), fake: fakeFileSet{ fset: fset, - files: make(map[string]*token.File), + files: make(map[string]*fileInfo), }, } + defer p.fake.setLines() // set lines for files in fset for i, pt := range predeclared() { p.typCache[uint64(i)] = pt @@ -143,54 +197,110 @@ func IImportData(fset *token.FileSet, imports map[string]*types.Package, data [] p.pkgIndex[pkg] = nameIndex pkgList[i] = pkg } - if len(pkgList) == 0 { - errorf("no packages found for %s", path) - panic("unreachable") + + if bundle { + pkgs = make([]*types.Package, r.uint64()) + for i := range pkgs { + pkg := p.pkgAt(r.uint64()) + imps := make([]*types.Package, r.uint64()) + for j := range imps { + imps[j] = p.pkgAt(r.uint64()) + } + pkg.SetImports(imps) + pkgs[i] = pkg + } + } else { + if len(pkgList) == 0 { + errorf("no packages found for %s", path) + panic("unreachable") + } + pkgs = pkgList[:1] + + // record all referenced packages as imports + list := append(([]*types.Package)(nil), pkgList[1:]...) + sort.Sort(byPath(list)) + pkgs[0].SetImports(list) } - p.ipkg = pkgList[0] - names := make([]string, 0, len(p.pkgIndex[p.ipkg])) - for name := range p.pkgIndex[p.ipkg] { - names = append(names, name) + + for _, pkg := range pkgs { + if pkg.Complete() { + continue + } + + names := make([]string, 0, len(p.pkgIndex[pkg])) + for name := range p.pkgIndex[pkg] { + names = append(names, name) + } + sort.Strings(names) + for _, name := range names { + p.doDecl(pkg, name) + } + + // package was imported completely and without errors + pkg.MarkComplete() } - sort.Strings(names) - for _, name := range names { - p.doDecl(p.ipkg, name) + + // SetConstraint can't be called if the constraint type is not yet complete. + // When type params are created in the 'P' case of (*importReader).obj(), + // the associated constraint type may not be complete due to recursion. + // Therefore, we defer calling SetConstraint there, and call it here instead + // after all types are complete. + for _, d := range p.later { + typeparams.SetTypeParamConstraint(d.t, d.constraint) } for _, typ := range p.interfaceList { typ.Complete() } - // record all referenced packages as imports - list := append(([]*types.Package)(nil), pkgList[1:]...) - sort.Sort(byPath(list)) - p.ipkg.SetImports(list) - - // package was imported completely and without errors - p.ipkg.MarkComplete() + return pkgs, nil +} - consumed, _ := r.Seek(0, io.SeekCurrent) - return int(consumed), p.ipkg, nil +type setConstraintArgs struct { + t *typeparams.TypeParam + constraint types.Type } type iimporter struct { - ipath string - ipkg *types.Package version int + ipath string stringData []byte stringCache map[uint64]string pkgCache map[uint64]*types.Package - declData []byte - pkgIndex map[*types.Package]map[string]uint64 - typCache map[uint64]types.Type + declData []byte + pkgIndex map[*types.Package]map[string]uint64 + typCache map[uint64]types.Type + tparamIndex map[ident]types.Type fake fakeFileSet interfaceList []*types.Interface + + // Arguments for calls to SetConstraint that are deferred due to recursive types + later []setConstraintArgs + + indent int // for tracing support +} + +func (p *iimporter) trace(format string, args ...interface{}) { + if !trace { + // Call sites should also be guarded, but having this check here allows + // easily enabling/disabling debug trace statements. + return + } + fmt.Printf(strings.Repeat("..", p.indent)+format+"\n", args...) } func (p *iimporter) doDecl(pkg *types.Package, name string) { + if debug { + p.trace("import decl %s", name) + p.indent++ + defer func() { + p.indent-- + p.trace("=> %s", name) + }() + } // See if we've already imported this declaration. if obj := pkg.Scope().Lookup(name); obj != nil { return @@ -227,15 +337,12 @@ func (p *iimporter) pkgAt(off uint64) *types.Package { return pkg } path := p.stringAt(off) - if path == p.ipath { - return p.ipkg - } errorf("missing package %q in %q", path, p.ipath) return nil } func (p *iimporter) typAt(off uint64, base *types.Named) types.Type { - if t, ok := p.typCache[off]; ok && (base == nil || !isInterface(t)) { + if t, ok := p.typCache[off]; ok && canReuse(base, t) { return t } @@ -247,12 +354,30 @@ func (p *iimporter) typAt(off uint64, base *types.Named) types.Type { r.declReader.Reset(p.declData[off-predeclReserved:]) t := r.doType(base) - if base == nil || !isInterface(t) { + if canReuse(base, t) { p.typCache[off] = t } return t } +// canReuse reports whether the type rhs on the RHS of the declaration for def +// may be re-used. +// +// Specifically, if def is non-nil and rhs is an interface type with methods, it +// may not be re-used because we have a convention of setting the receiver type +// for interface methods to def. +func canReuse(def *types.Named, rhs types.Type) bool { + if def == nil { + return true + } + iface, _ := rhs.(*types.Interface) + if iface == nil { + return true + } + // Don't use iface.Empty() here as iface may not be complete. + return iface.NumEmbeddeds() == 0 && iface.NumExplicitMethods() == 0 +} + type importReader struct { p *iimporter declReader bytes.Reader @@ -277,17 +402,26 @@ func (r *importReader) obj(name string) { r.declare(types.NewConst(pos, r.currPkg, name, typ, val)) - case 'F': - sig := r.signature(nil) - + case 'F', 'G': + var tparams []*typeparams.TypeParam + if tag == 'G' { + tparams = r.tparamList() + } + sig := r.signature(nil, nil, tparams) r.declare(types.NewFunc(pos, r.currPkg, name, sig)) - case 'T': + case 'T', 'U': // Types can be recursive. We need to setup a stub // declaration before recursing. obj := types.NewTypeName(pos, r.currPkg, name, nil) named := types.NewNamed(obj, nil, nil) + // Declare obj before calling r.tparamList, so the new type name is recognized + // if used in the constraint of one of its own typeparams (see #48280). r.declare(obj) + if tag == 'U' { + tparams := r.tparamList() + typeparams.SetForNamed(named, tparams) + } underlying := r.p.typAt(r.uint64(), named).Underlying() named.SetUnderlying(underlying) @@ -297,12 +431,59 @@ func (r *importReader) obj(name string) { mpos := r.pos() mname := r.ident() recv := r.param() - msig := r.signature(recv) + + // If the receiver has any targs, set those as the + // rparams of the method (since those are the + // typeparams being used in the method sig/body). + base := baseType(recv.Type()) + assert(base != nil) + targs := typeparams.NamedTypeArgs(base) + var rparams []*typeparams.TypeParam + if targs.Len() > 0 { + rparams = make([]*typeparams.TypeParam, targs.Len()) + for i := range rparams { + rparams[i] = targs.At(i).(*typeparams.TypeParam) + } + } + msig := r.signature(recv, rparams, nil) named.AddMethod(types.NewFunc(mpos, r.currPkg, mname, msig)) } } + case 'P': + // We need to "declare" a typeparam in order to have a name that + // can be referenced recursively (if needed) in the type param's + // bound. + if r.p.version < iexportVersionGenerics { + errorf("unexpected type param type") + } + name0 := tparamName(name) + tn := types.NewTypeName(pos, r.currPkg, name0, nil) + t := typeparams.NewTypeParam(tn, nil) + + // To handle recursive references to the typeparam within its + // bound, save the partial type in tparamIndex before reading the bounds. + id := ident{r.currPkg, name} + r.p.tparamIndex[id] = t + var implicit bool + if r.p.version >= iexportVersionGo1_18 { + implicit = r.bool() + } + constraint := r.typ() + if implicit { + iface, _ := constraint.(*types.Interface) + if iface == nil { + errorf("non-interface constraint marked implicit") + } + typeparams.MarkImplicit(iface) + } + // The constraint type may not be complete, if we + // are in the middle of a type recursion involving type + // constraints. So, we defer SetConstraint until we have + // completely set up all types in ImportData. + r.p.later = append(r.p.later, setConstraintArgs{t: t, constraint: constraint}) + case 'V': typ := r.typ() @@ -319,6 +500,10 @@ func (r *importReader) declare(obj types.Object) { func (r *importReader) value() (typ types.Type, val constant.Value) { typ = r.typ() + if r.p.version >= iexportVersionGo1_18 { + // TODO: add support for using the kind. + _ = constant.Kind(r.int64()) + } switch b := typ.Underlying().(*types.Basic); b.Info() & types.IsConstType { case types.IsBoolean: @@ -328,7 +513,9 @@ func (r *importReader) value() (typ types.Type, val constant.Value) { val = constant.MakeString(r.string()) case types.IsInteger: - val = r.mpint(b) + var x big.Int + r.mpint(&x, b) + val = constant.Make(&x) case types.IsFloat: val = r.mpfloat(b) @@ -377,8 +564,8 @@ func intSize(b *types.Basic) (signed bool, maxBytes uint) { return } -func (r *importReader) mpint(b *types.Basic) constant.Value { - signed, maxBytes := intSize(b) +func (r *importReader) mpint(x *big.Int, typ *types.Basic) { + signed, maxBytes := intSize(typ) maxSmall := 256 - maxBytes if signed { @@ -397,7 +584,8 @@ func (r *importReader) mpint(b *types.Basic) constant.Value { v = ^v } } - return constant.MakeInt64(v) + x.SetInt64(v) + return } v := -n @@ -407,39 +595,23 @@ func (r *importReader) mpint(b *types.Basic) constant.Value { if v < 1 || uint(v) > maxBytes { errorf("weird decoding: %v, %v => %v", n, signed, v) } - - buf := make([]byte, v) - io.ReadFull(&r.declReader, buf) - - // convert to little endian - // TODO(gri) go/constant should have a more direct conversion function - // (e.g., once it supports a big.Float based implementation) - for i, j := 0, len(buf)-1; i < j; i, j = i+1, j-1 { - buf[i], buf[j] = buf[j], buf[i] - } - - x := constant.MakeFromBytes(buf) + b := make([]byte, v) + io.ReadFull(&r.declReader, b) + x.SetBytes(b) if signed && n&1 != 0 { - x = constant.UnaryOp(token.SUB, x, 0) + x.Neg(x) } - return x } -func (r *importReader) mpfloat(b *types.Basic) constant.Value { - x := r.mpint(b) - if constant.Sign(x) == 0 { - return x +func (r *importReader) mpfloat(typ *types.Basic) constant.Value { + var mant big.Int + r.mpint(&mant, typ) + var f big.Float + f.SetInt(&mant) + if f.Sign() != 0 { + f.SetMantExp(&f, int(r.int64())) } - - exp := r.int64() - switch { - case exp > 0: - x = constant.Shift(x, token.SHL, uint(exp)) - case exp < 0: - d := constant.Shift(constant.MakeInt64(1), token.SHL, uint(-exp)) - x = constant.BinaryOp(x, token.QUO, d) - } - return x + return constant.Make(&f) } func (r *importReader) ident() string { @@ -453,7 +625,7 @@ func (r *importReader) qualifiedIdent() (*types.Package, string) { } func (r *importReader) pos() token.Pos { - if r.p.version >= 1 { + if r.p.version >= iexportVersionPosCol { r.posv1() } else { r.posv0() @@ -501,8 +673,17 @@ func isInterface(t types.Type) bool { func (r *importReader) pkg() *types.Package { return r.p.pkgAt(r.uint64()) } func (r *importReader) string() string { return r.p.stringAt(r.uint64()) } -func (r *importReader) doType(base *types.Named) types.Type { - switch k := r.kind(); k { +func (r *importReader) doType(base *types.Named) (res types.Type) { + k := r.kind() + if debug { + r.p.trace("importing type %d (base: %s)", k, base) + r.p.indent++ + defer func() { + r.p.indent-- + r.p.trace("=> %s", res) + }() + } + switch k { default: errorf("unexpected kind tag in %q: %v", r.p.ipath, k) return nil @@ -525,7 +706,7 @@ func (r *importReader) doType(base *types.Named) types.Type { return types.NewMap(r.typ(), r.typ()) case signatureType: r.currPkg = r.pkg() - return r.signature(nil) + return r.signature(nil, nil, nil) case structType: r.currPkg = r.pkg() @@ -565,13 +746,56 @@ func (r *importReader) doType(base *types.Named) types.Type { recv = types.NewVar(token.NoPos, r.currPkg, "", base) } - msig := r.signature(recv) + msig := r.signature(recv, nil, nil) methods[i] = types.NewFunc(mpos, r.currPkg, mname, msig) } typ := newInterface(methods, embeddeds) r.p.interfaceList = append(r.p.interfaceList, typ) return typ + + case typeParamType: + if r.p.version < iexportVersionGenerics { + errorf("unexpected type param type") + } + pkg, name := r.qualifiedIdent() + id := ident{pkg, name} + if t, ok := r.p.tparamIndex[id]; ok { + // We're already in the process of importing this typeparam. + return t + } + // Otherwise, import the definition of the typeparam now. + r.p.doDecl(pkg, name) + return r.p.tparamIndex[id] + + case instanceType: + if r.p.version < iexportVersionGenerics { + errorf("unexpected instantiation type") + } + // pos does not matter for instances: they are positioned on the original + // type. + _ = r.pos() + len := r.uint64() + targs := make([]types.Type, len) + for i := range targs { + targs[i] = r.typ() + } + baseType := r.typ() + // The imported instantiated type doesn't include any methods, so + // we must always use the methods of the base (orig) type. + // TODO provide a non-nil *Environment + t, _ := typeparams.Instantiate(nil, baseType, targs, false) + return t + + case unionType: + if r.p.version < iexportVersionGenerics { + errorf("unexpected instantiation type") + } + terms := make([]*typeparams.Term, r.uint64()) + for i := range terms { + terms[i] = typeparams.NewTerm(r.bool(), r.typ()) + } + return typeparams.NewUnion(terms) } } @@ -579,11 +803,25 @@ func (r *importReader) kind() itag { return itag(r.uint64()) } -func (r *importReader) signature(recv *types.Var) *types.Signature { +func (r *importReader) signature(recv *types.Var, rparams []*typeparams.TypeParam, tparams []*typeparams.TypeParam) *types.Signature { params := r.paramList() results := r.paramList() variadic := params.Len() > 0 && r.bool() - return types.NewSignature(recv, params, results, variadic) + return typeparams.NewSignatureType(recv, rparams, tparams, params, results, variadic) +} + +func (r *importReader) tparamList() []*typeparams.TypeParam { + n := r.uint64() + if n == 0 { + return nil + } + xs := make([]*typeparams.TypeParam, n) + for i := range xs { + // Note: the standard library importer is tolerant of nil types here, + // though would panic in SetTypeParams. + xs[i] = r.typ().(*typeparams.TypeParam) + } + return xs } func (r *importReader) paramList() *types.Tuple { @@ -628,3 +866,13 @@ func (r *importReader) byte() byte { } return x } + +func baseType(typ types.Type) *types.Named { + // pointer receivers are never types.Named types + if p, _ := typ.(*types.Pointer); p != nil { + typ = p.Elem() + } + // receiver base types are always (possibly generic) types.Named types + n, _ := typ.(*types.Named) + return n +} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go index 463f252..8b163e3 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go @@ -2,6 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +//go:build !go1.11 // +build !go1.11 package gcimporter diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go index ab28b95..49984f4 100644 --- a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go @@ -2,6 +2,7 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +//go:build go1.11 // +build go1.11 package gcimporter diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go b/vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go new file mode 100644 index 0000000..d892273 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/support_go117.go @@ -0,0 +1,16 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !go1.18 +// +build !go1.18 + +package gcimporter + +import "go/types" + +const iexportVersion = iexportVersionGo1_11 + +func additionalPredeclared() []types.Type { + return nil +} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go b/vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go new file mode 100644 index 0000000..a993843 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/support_go118.go @@ -0,0 +1,23 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.18 +// +build go1.18 + +package gcimporter + +import "go/types" + +const iexportVersion = iexportVersionGenerics + +// additionalPredeclared returns additional predeclared types in go.1.18. +func additionalPredeclared() []types.Type { + return []types.Type{ + // comparable + types.Universe.Lookup("comparable").Type(), + + // any + types.Universe.Lookup("any").Type(), + } +} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/unified_no.go b/vendor/golang.org/x/tools/go/internal/gcimporter/unified_no.go new file mode 100644 index 0000000..286bf44 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/unified_no.go @@ -0,0 +1,10 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !(go1.18 && goexperiment.unified) +// +build !go1.18 !goexperiment.unified + +package gcimporter + +const unifiedIR = false diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/unified_yes.go b/vendor/golang.org/x/tools/go/internal/gcimporter/unified_yes.go new file mode 100644 index 0000000..b5d69ff --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/unified_yes.go @@ -0,0 +1,10 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.18 && goexperiment.unified +// +build go1.18,goexperiment.unified + +package gcimporter + +const unifiedIR = true diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/ureader_no.go b/vendor/golang.org/x/tools/go/internal/gcimporter/ureader_no.go new file mode 100644 index 0000000..8eb2072 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/ureader_no.go @@ -0,0 +1,19 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !go1.18 +// +build !go1.18 + +package gcimporter + +import ( + "fmt" + "go/token" + "go/types" +) + +func UImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (_ int, pkg *types.Package, err error) { + err = fmt.Errorf("go/tools compiled with a Go version earlier than 1.18 cannot read unified IR export data") + return +} diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/ureader_yes.go b/vendor/golang.org/x/tools/go/internal/gcimporter/ureader_yes.go new file mode 100644 index 0000000..3c1a437 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/gcimporter/ureader_yes.go @@ -0,0 +1,612 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Derived from go/internal/gcimporter/ureader.go + +//go:build go1.18 +// +build go1.18 + +package gcimporter + +import ( + "go/token" + "go/types" + "strings" + + "golang.org/x/tools/go/internal/pkgbits" +) + +// A pkgReader holds the shared state for reading a unified IR package +// description. +type pkgReader struct { + pkgbits.PkgDecoder + + fake fakeFileSet + + ctxt *types.Context + imports map[string]*types.Package // previously imported packages, indexed by path + + // lazily initialized arrays corresponding to the unified IR + // PosBase, Pkg, and Type sections, respectively. + posBases []string // position bases (i.e., file names) + pkgs []*types.Package + typs []types.Type + + // laterFns holds functions that need to be invoked at the end of + // import reading. + laterFns []func() +} + +// later adds a function to be invoked at the end of import reading. +func (pr *pkgReader) later(fn func()) { + pr.laterFns = append(pr.laterFns, fn) +} + +// See cmd/compile/internal/noder.derivedInfo. +type derivedInfo struct { + idx pkgbits.Index + needed bool +} + +// See cmd/compile/internal/noder.typeInfo. +type typeInfo struct { + idx pkgbits.Index + derived bool +} + +func UImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (_ int, pkg *types.Package, err error) { + s := string(data) + s = s[:strings.LastIndex(s, "\n$$\n")] + input := pkgbits.NewPkgDecoder(path, s) + pkg = readUnifiedPackage(fset, nil, imports, input) + return +} + +// readUnifiedPackage reads a package description from the given +// unified IR export data decoder. +func readUnifiedPackage(fset *token.FileSet, ctxt *types.Context, imports map[string]*types.Package, input pkgbits.PkgDecoder) *types.Package { + pr := pkgReader{ + PkgDecoder: input, + + fake: fakeFileSet{ + fset: fset, + files: make(map[string]*fileInfo), + }, + + ctxt: ctxt, + imports: imports, + + posBases: make([]string, input.NumElems(pkgbits.RelocPosBase)), + pkgs: make([]*types.Package, input.NumElems(pkgbits.RelocPkg)), + typs: make([]types.Type, input.NumElems(pkgbits.RelocType)), + } + defer pr.fake.setLines() + + r := pr.newReader(pkgbits.RelocMeta, pkgbits.PublicRootIdx, pkgbits.SyncPublic) + pkg := r.pkg() + r.Bool() // has init + + for i, n := 0, r.Len(); i < n; i++ { + // As if r.obj(), but avoiding the Scope.Lookup call, + // to avoid eager loading of imports. + r.Sync(pkgbits.SyncObject) + assert(!r.Bool()) + r.p.objIdx(r.Reloc(pkgbits.RelocObj)) + assert(r.Len() == 0) + } + + r.Sync(pkgbits.SyncEOF) + + for _, fn := range pr.laterFns { + fn() + } + + pkg.MarkComplete() + return pkg +} + +// A reader holds the state for reading a single unified IR element +// within a package. +type reader struct { + pkgbits.Decoder + + p *pkgReader + + dict *readerDict +} + +// A readerDict holds the state for type parameters that parameterize +// the current unified IR element. +type readerDict struct { + // bounds is a slice of typeInfos corresponding to the underlying + // bounds of the element's type parameters. + bounds []typeInfo + + // tparams is a slice of the constructed TypeParams for the element. + tparams []*types.TypeParam + + // devived is a slice of types derived from tparams, which may be + // instantiated while reading the current element. + derived []derivedInfo + derivedTypes []types.Type // lazily instantiated from derived +} + +func (pr *pkgReader) newReader(k pkgbits.RelocKind, idx pkgbits.Index, marker pkgbits.SyncMarker) *reader { + return &reader{ + Decoder: pr.NewDecoder(k, idx, marker), + p: pr, + } +} + +// @@@ Positions + +func (r *reader) pos() token.Pos { + r.Sync(pkgbits.SyncPos) + if !r.Bool() { + return token.NoPos + } + + // TODO(mdempsky): Delta encoding. + posBase := r.posBase() + line := r.Uint() + col := r.Uint() + return r.p.fake.pos(posBase, int(line), int(col)) +} + +func (r *reader) posBase() string { + return r.p.posBaseIdx(r.Reloc(pkgbits.RelocPosBase)) +} + +func (pr *pkgReader) posBaseIdx(idx pkgbits.Index) string { + if b := pr.posBases[idx]; b != "" { + return b + } + + r := pr.newReader(pkgbits.RelocPosBase, idx, pkgbits.SyncPosBase) + + // Within types2, position bases have a lot more details (e.g., + // keeping track of where //line directives appeared exactly). + // + // For go/types, we just track the file name. + + filename := r.String() + + if r.Bool() { // file base + // Was: "b = token.NewTrimmedFileBase(filename, true)" + } else { // line base + pos := r.pos() + line := r.Uint() + col := r.Uint() + + // Was: "b = token.NewLineBase(pos, filename, true, line, col)" + _, _, _ = pos, line, col + } + + b := filename + pr.posBases[idx] = b + return b +} + +// @@@ Packages + +func (r *reader) pkg() *types.Package { + r.Sync(pkgbits.SyncPkg) + return r.p.pkgIdx(r.Reloc(pkgbits.RelocPkg)) +} + +func (pr *pkgReader) pkgIdx(idx pkgbits.Index) *types.Package { + // TODO(mdempsky): Consider using some non-nil pointer to indicate + // the universe scope, so we don't need to keep re-reading it. + if pkg := pr.pkgs[idx]; pkg != nil { + return pkg + } + + pkg := pr.newReader(pkgbits.RelocPkg, idx, pkgbits.SyncPkgDef).doPkg() + pr.pkgs[idx] = pkg + return pkg +} + +func (r *reader) doPkg() *types.Package { + path := r.String() + switch path { + case "": + path = r.p.PkgPath() + case "builtin": + return nil // universe + case "unsafe": + return types.Unsafe + } + + if pkg := r.p.imports[path]; pkg != nil { + return pkg + } + + name := r.String() + + pkg := types.NewPackage(path, name) + r.p.imports[path] = pkg + + imports := make([]*types.Package, r.Len()) + for i := range imports { + imports[i] = r.pkg() + } + pkg.SetImports(imports) + + return pkg +} + +// @@@ Types + +func (r *reader) typ() types.Type { + return r.p.typIdx(r.typInfo(), r.dict) +} + +func (r *reader) typInfo() typeInfo { + r.Sync(pkgbits.SyncType) + if r.Bool() { + return typeInfo{idx: pkgbits.Index(r.Len()), derived: true} + } + return typeInfo{idx: r.Reloc(pkgbits.RelocType), derived: false} +} + +func (pr *pkgReader) typIdx(info typeInfo, dict *readerDict) types.Type { + idx := info.idx + var where *types.Type + if info.derived { + where = &dict.derivedTypes[idx] + idx = dict.derived[idx].idx + } else { + where = &pr.typs[idx] + } + + if typ := *where; typ != nil { + return typ + } + + r := pr.newReader(pkgbits.RelocType, idx, pkgbits.SyncTypeIdx) + r.dict = dict + + typ := r.doTyp() + assert(typ != nil) + + // See comment in pkgReader.typIdx explaining how this happens. + if prev := *where; prev != nil { + return prev + } + + *where = typ + return typ +} + +func (r *reader) doTyp() (res types.Type) { + switch tag := pkgbits.CodeType(r.Code(pkgbits.SyncType)); tag { + default: + errorf("unhandled type tag: %v", tag) + panic("unreachable") + + case pkgbits.TypeBasic: + return types.Typ[r.Len()] + + case pkgbits.TypeNamed: + obj, targs := r.obj() + name := obj.(*types.TypeName) + if len(targs) != 0 { + t, _ := types.Instantiate(r.p.ctxt, name.Type(), targs, false) + return t + } + return name.Type() + + case pkgbits.TypeTypeParam: + return r.dict.tparams[r.Len()] + + case pkgbits.TypeArray: + len := int64(r.Uint64()) + return types.NewArray(r.typ(), len) + case pkgbits.TypeChan: + dir := types.ChanDir(r.Len()) + return types.NewChan(dir, r.typ()) + case pkgbits.TypeMap: + return types.NewMap(r.typ(), r.typ()) + case pkgbits.TypePointer: + return types.NewPointer(r.typ()) + case pkgbits.TypeSignature: + return r.signature(nil, nil, nil) + case pkgbits.TypeSlice: + return types.NewSlice(r.typ()) + case pkgbits.TypeStruct: + return r.structType() + case pkgbits.TypeInterface: + return r.interfaceType() + case pkgbits.TypeUnion: + return r.unionType() + } +} + +func (r *reader) structType() *types.Struct { + fields := make([]*types.Var, r.Len()) + var tags []string + for i := range fields { + pos := r.pos() + pkg, name := r.selector() + ftyp := r.typ() + tag := r.String() + embedded := r.Bool() + + fields[i] = types.NewField(pos, pkg, name, ftyp, embedded) + if tag != "" { + for len(tags) < i { + tags = append(tags, "") + } + tags = append(tags, tag) + } + } + return types.NewStruct(fields, tags) +} + +func (r *reader) unionType() *types.Union { + terms := make([]*types.Term, r.Len()) + for i := range terms { + terms[i] = types.NewTerm(r.Bool(), r.typ()) + } + return types.NewUnion(terms) +} + +func (r *reader) interfaceType() *types.Interface { + methods := make([]*types.Func, r.Len()) + embeddeds := make([]types.Type, r.Len()) + implicit := len(methods) == 0 && len(embeddeds) == 1 && r.Bool() + + for i := range methods { + pos := r.pos() + pkg, name := r.selector() + mtyp := r.signature(nil, nil, nil) + methods[i] = types.NewFunc(pos, pkg, name, mtyp) + } + + for i := range embeddeds { + embeddeds[i] = r.typ() + } + + iface := types.NewInterfaceType(methods, embeddeds) + if implicit { + iface.MarkImplicit() + } + return iface +} + +func (r *reader) signature(recv *types.Var, rtparams, tparams []*types.TypeParam) *types.Signature { + r.Sync(pkgbits.SyncSignature) + + params := r.params() + results := r.params() + variadic := r.Bool() + + return types.NewSignatureType(recv, rtparams, tparams, params, results, variadic) +} + +func (r *reader) params() *types.Tuple { + r.Sync(pkgbits.SyncParams) + + params := make([]*types.Var, r.Len()) + for i := range params { + params[i] = r.param() + } + + return types.NewTuple(params...) +} + +func (r *reader) param() *types.Var { + r.Sync(pkgbits.SyncParam) + + pos := r.pos() + pkg, name := r.localIdent() + typ := r.typ() + + return types.NewParam(pos, pkg, name, typ) +} + +// @@@ Objects + +func (r *reader) obj() (types.Object, []types.Type) { + r.Sync(pkgbits.SyncObject) + + assert(!r.Bool()) + + pkg, name := r.p.objIdx(r.Reloc(pkgbits.RelocObj)) + obj := pkgScope(pkg).Lookup(name) + + targs := make([]types.Type, r.Len()) + for i := range targs { + targs[i] = r.typ() + } + + return obj, targs +} + +func (pr *pkgReader) objIdx(idx pkgbits.Index) (*types.Package, string) { + rname := pr.newReader(pkgbits.RelocName, idx, pkgbits.SyncObject1) + + objPkg, objName := rname.qualifiedIdent() + assert(objName != "") + + tag := pkgbits.CodeObj(rname.Code(pkgbits.SyncCodeObj)) + + if tag == pkgbits.ObjStub { + assert(objPkg == nil || objPkg == types.Unsafe) + return objPkg, objName + } + + if objPkg.Scope().Lookup(objName) == nil { + dict := pr.objDictIdx(idx) + + r := pr.newReader(pkgbits.RelocObj, idx, pkgbits.SyncObject1) + r.dict = dict + + declare := func(obj types.Object) { + objPkg.Scope().Insert(obj) + } + + switch tag { + default: + panic("weird") + + case pkgbits.ObjAlias: + pos := r.pos() + typ := r.typ() + declare(types.NewTypeName(pos, objPkg, objName, typ)) + + case pkgbits.ObjConst: + pos := r.pos() + typ := r.typ() + val := r.Value() + declare(types.NewConst(pos, objPkg, objName, typ, val)) + + case pkgbits.ObjFunc: + pos := r.pos() + tparams := r.typeParamNames() + sig := r.signature(nil, nil, tparams) + declare(types.NewFunc(pos, objPkg, objName, sig)) + + case pkgbits.ObjType: + pos := r.pos() + + obj := types.NewTypeName(pos, objPkg, objName, nil) + named := types.NewNamed(obj, nil, nil) + declare(obj) + + named.SetTypeParams(r.typeParamNames()) + + // TODO(mdempsky): Rewrite receiver types to underlying is an + // Interface? The go/types importer does this (I think because + // unit tests expected that), but cmd/compile doesn't care + // about it, so maybe we can avoid worrying about that here. + rhs := r.typ() + r.p.later(func() { + underlying := rhs.Underlying() + named.SetUnderlying(underlying) + }) + + for i, n := 0, r.Len(); i < n; i++ { + named.AddMethod(r.method()) + } + + case pkgbits.ObjVar: + pos := r.pos() + typ := r.typ() + declare(types.NewVar(pos, objPkg, objName, typ)) + } + } + + return objPkg, objName +} + +func (pr *pkgReader) objDictIdx(idx pkgbits.Index) *readerDict { + r := pr.newReader(pkgbits.RelocObjDict, idx, pkgbits.SyncObject1) + + var dict readerDict + + if implicits := r.Len(); implicits != 0 { + errorf("unexpected object with %v implicit type parameter(s)", implicits) + } + + dict.bounds = make([]typeInfo, r.Len()) + for i := range dict.bounds { + dict.bounds[i] = r.typInfo() + } + + dict.derived = make([]derivedInfo, r.Len()) + dict.derivedTypes = make([]types.Type, len(dict.derived)) + for i := range dict.derived { + dict.derived[i] = derivedInfo{r.Reloc(pkgbits.RelocType), r.Bool()} + } + + // function references follow, but reader doesn't need those + + return &dict +} + +func (r *reader) typeParamNames() []*types.TypeParam { + r.Sync(pkgbits.SyncTypeParamNames) + + // Note: This code assumes it only processes objects without + // implement type parameters. This is currently fine, because + // reader is only used to read in exported declarations, which are + // always package scoped. + + if len(r.dict.bounds) == 0 { + return nil + } + + // Careful: Type parameter lists may have cycles. To allow for this, + // we construct the type parameter list in two passes: first we + // create all the TypeNames and TypeParams, then we construct and + // set the bound type. + + r.dict.tparams = make([]*types.TypeParam, len(r.dict.bounds)) + for i := range r.dict.bounds { + pos := r.pos() + pkg, name := r.localIdent() + + tname := types.NewTypeName(pos, pkg, name, nil) + r.dict.tparams[i] = types.NewTypeParam(tname, nil) + } + + typs := make([]types.Type, len(r.dict.bounds)) + for i, bound := range r.dict.bounds { + typs[i] = r.p.typIdx(bound, r.dict) + } + + // TODO(mdempsky): This is subtle, elaborate further. + // + // We have to save tparams outside of the closure, because + // typeParamNames() can be called multiple times with the same + // dictionary instance. + // + // Also, this needs to happen later to make sure SetUnderlying has + // been called. + // + // TODO(mdempsky): Is it safe to have a single "later" slice or do + // we need to have multiple passes? See comments on CL 386002 and + // go.dev/issue/52104. + tparams := r.dict.tparams + r.p.later(func() { + for i, typ := range typs { + tparams[i].SetConstraint(typ) + } + }) + + return r.dict.tparams +} + +func (r *reader) method() *types.Func { + r.Sync(pkgbits.SyncMethod) + pos := r.pos() + pkg, name := r.selector() + + rparams := r.typeParamNames() + sig := r.signature(r.param(), rparams, nil) + + _ = r.pos() // TODO(mdempsky): Remove; this is a hacker for linker.go. + return types.NewFunc(pos, pkg, name, sig) +} + +func (r *reader) qualifiedIdent() (*types.Package, string) { return r.ident(pkgbits.SyncSym) } +func (r *reader) localIdent() (*types.Package, string) { return r.ident(pkgbits.SyncLocalIdent) } +func (r *reader) selector() (*types.Package, string) { return r.ident(pkgbits.SyncSelector) } + +func (r *reader) ident(marker pkgbits.SyncMarker) (*types.Package, string) { + r.Sync(marker) + return r.pkg(), r.String() +} + +// pkgScope returns pkg.Scope(). +// If pkg is nil, it returns types.Universe instead. +// +// TODO(mdempsky): Remove after x/tools can depend on Go 1.19. +func pkgScope(pkg *types.Package) *types.Scope { + if pkg != nil { + return pkg.Scope() + } + return types.Universe +} diff --git a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go index ea15d57..18a002f 100644 --- a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go +++ b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go @@ -6,168 +6,44 @@ package packagesdriver import ( - "bytes" "context" - "encoding/json" "fmt" "go/types" - "log" - "os" - "os/exec" "strings" - "time" + + "golang.org/x/tools/internal/gocommand" ) var debug = false -// GetSizes returns the sizes used by the underlying driver with the given parameters. -func GetSizes(ctx context.Context, buildFlags, env []string, dir string, usesExportData bool) (types.Sizes, error) { - // TODO(matloob): Clean this up. This code is mostly a copy of packages.findExternalDriver. - const toolPrefix = "GOPACKAGESDRIVER=" - tool := "" - for _, env := range env { - if val := strings.TrimPrefix(env, toolPrefix); val != env { - tool = val - } - } - - if tool == "" { - var err error - tool, err = exec.LookPath("gopackagesdriver") - if err != nil { - // We did not find the driver, so use "go list". - tool = "off" - } - } - - if tool == "off" { - return GetSizesGolist(ctx, buildFlags, env, dir, usesExportData) - } - - req, err := json.Marshal(struct { - Command string `json:"command"` - Env []string `json:"env"` - BuildFlags []string `json:"build_flags"` - }{ - Command: "sizes", - Env: env, - BuildFlags: buildFlags, - }) - if err != nil { - return nil, fmt.Errorf("failed to encode message to driver tool: %v", err) - } - - buf := new(bytes.Buffer) - cmd := exec.CommandContext(ctx, tool) - cmd.Dir = dir - cmd.Env = env - cmd.Stdin = bytes.NewReader(req) - cmd.Stdout = buf - cmd.Stderr = new(bytes.Buffer) - if err := cmd.Run(); err != nil { - return nil, fmt.Errorf("%v: %v: %s", tool, err, cmd.Stderr) - } - var response struct { - // Sizes, if not nil, is the types.Sizes to use when type checking. - Sizes *types.StdSizes - } - if err := json.Unmarshal(buf.Bytes(), &response); err != nil { - return nil, err - } - return response.Sizes, nil -} - -func GetSizesGolist(ctx context.Context, buildFlags, env []string, dir string, usesExportData bool) (types.Sizes, error) { - args := []string{"list", "-f", "{{context.GOARCH}} {{context.Compiler}}"} - args = append(args, buildFlags...) - args = append(args, "--", "unsafe") - stdout, err := InvokeGo(ctx, env, dir, usesExportData, args...) +func GetSizesGolist(ctx context.Context, inv gocommand.Invocation, gocmdRunner *gocommand.Runner) (types.Sizes, error) { + inv.Verb = "list" + inv.Args = []string{"-f", "{{context.GOARCH}} {{context.Compiler}}", "--", "unsafe"} + stdout, stderr, friendlyErr, rawErr := gocmdRunner.RunRaw(ctx, inv) var goarch, compiler string - if err != nil { - if strings.Contains(err.Error(), "cannot find main module") { + if rawErr != nil { + if rawErrMsg := rawErr.Error(); strings.Contains(rawErrMsg, "cannot find main module") || strings.Contains(rawErrMsg, "go.mod file not found") { // User's running outside of a module. All bets are off. Get GOARCH and guess compiler is gc. // TODO(matloob): Is this a problem in practice? - envout, enverr := InvokeGo(ctx, env, dir, usesExportData, "env", "GOARCH") + inv.Verb = "env" + inv.Args = []string{"GOARCH"} + envout, enverr := gocmdRunner.Run(ctx, inv) if enverr != nil { - return nil, err + return nil, enverr } goarch = strings.TrimSpace(envout.String()) compiler = "gc" } else { - return nil, err + return nil, friendlyErr } } else { fields := strings.Fields(stdout.String()) if len(fields) < 2 { - return nil, fmt.Errorf("could not determine GOARCH and Go compiler") + return nil, fmt.Errorf("could not parse GOARCH and Go compiler in format \" \":\nstdout: <<%s>>\nstderr: <<%s>>", + stdout.String(), stderr.String()) } goarch = fields[0] compiler = fields[1] } return types.SizesFor(compiler, goarch), nil } - -// InvokeGo returns the stdout of a go command invocation. -func InvokeGo(ctx context.Context, env []string, dir string, usesExportData bool, args ...string) (*bytes.Buffer, error) { - if debug { - defer func(start time.Time) { log.Printf("%s for %v", time.Since(start), cmdDebugStr(env, args...)) }(time.Now()) - } - stdout := new(bytes.Buffer) - stderr := new(bytes.Buffer) - cmd := exec.CommandContext(ctx, "go", args...) - // On darwin the cwd gets resolved to the real path, which breaks anything that - // expects the working directory to keep the original path, including the - // go command when dealing with modules. - // The Go stdlib has a special feature where if the cwd and the PWD are the - // same node then it trusts the PWD, so by setting it in the env for the child - // process we fix up all the paths returned by the go command. - cmd.Env = append(append([]string{}, env...), "PWD="+dir) - cmd.Dir = dir - cmd.Stdout = stdout - cmd.Stderr = stderr - if err := cmd.Run(); err != nil { - exitErr, ok := err.(*exec.ExitError) - if !ok { - // Catastrophic error: - // - executable not found - // - context cancellation - return nil, fmt.Errorf("couldn't exec 'go %v': %s %T", args, err, err) - } - - // Export mode entails a build. - // If that build fails, errors appear on stderr - // (despite the -e flag) and the Export field is blank. - // Do not fail in that case. - if !usesExportData { - return nil, fmt.Errorf("go %v: %s: %s", args, exitErr, stderr) - } - } - - // As of writing, go list -export prints some non-fatal compilation - // errors to stderr, even with -e set. We would prefer that it put - // them in the Package.Error JSON (see https://golang.org/issue/26319). - // In the meantime, there's nowhere good to put them, but they can - // be useful for debugging. Print them if $GOPACKAGESPRINTGOLISTERRORS - // is set. - if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTGOLISTERRORS") != "" { - fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(env, args...), stderr) - } - - // debugging - if false { - fmt.Fprintf(os.Stderr, "%s stdout: <<%s>>\n", cmdDebugStr(env, args...), stdout) - } - - return stdout, nil -} - -func cmdDebugStr(envlist []string, args ...string) string { - env := make(map[string]string) - for _, kv := range envlist { - split := strings.Split(kv, "=") - k, v := split[0], split[1] - env[k] = v - } - - return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v PWD=%v go %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["PWD"], args) -} diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/codes.go b/vendor/golang.org/x/tools/go/internal/pkgbits/codes.go new file mode 100644 index 0000000..f0cabde --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/codes.go @@ -0,0 +1,77 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +// A Code is an enum value that can be encoded into bitstreams. +// +// Code types are preferable for enum types, because they allow +// Decoder to detect desyncs. +type Code interface { + // Marker returns the SyncMarker for the Code's dynamic type. + Marker() SyncMarker + + // Value returns the Code's ordinal value. + Value() int +} + +// A CodeVal distinguishes among go/constant.Value encodings. +type CodeVal int + +func (c CodeVal) Marker() SyncMarker { return SyncVal } +func (c CodeVal) Value() int { return int(c) } + +// Note: These values are public and cannot be changed without +// updating the go/types importers. + +const ( + ValBool CodeVal = iota + ValString + ValInt64 + ValBigInt + ValBigRat + ValBigFloat +) + +// A CodeType distinguishes among go/types.Type encodings. +type CodeType int + +func (c CodeType) Marker() SyncMarker { return SyncType } +func (c CodeType) Value() int { return int(c) } + +// Note: These values are public and cannot be changed without +// updating the go/types importers. + +const ( + TypeBasic CodeType = iota + TypeNamed + TypePointer + TypeSlice + TypeArray + TypeChan + TypeMap + TypeSignature + TypeStruct + TypeInterface + TypeUnion + TypeTypeParam +) + +// A CodeObj distinguishes among go/types.Object encodings. +type CodeObj int + +func (c CodeObj) Marker() SyncMarker { return SyncCodeObj } +func (c CodeObj) Value() int { return int(c) } + +// Note: These values are public and cannot be changed without +// updating the go/types importers. + +const ( + ObjAlias CodeObj = iota + ObjConst + ObjType + ObjFunc + ObjVar + ObjStub +) diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/decoder.go b/vendor/golang.org/x/tools/go/internal/pkgbits/decoder.go new file mode 100644 index 0000000..2bc7936 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/decoder.go @@ -0,0 +1,433 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +import ( + "encoding/binary" + "fmt" + "go/constant" + "go/token" + "math/big" + "os" + "runtime" + "strings" +) + +// A PkgDecoder provides methods for decoding a package's Unified IR +// export data. +type PkgDecoder struct { + // version is the file format version. + version uint32 + + // sync indicates whether the file uses sync markers. + sync bool + + // pkgPath is the package path for the package to be decoded. + // + // TODO(mdempsky): Remove; unneeded since CL 391014. + pkgPath string + + // elemData is the full data payload of the encoded package. + // Elements are densely and contiguously packed together. + // + // The last 8 bytes of elemData are the package fingerprint. + elemData string + + // elemEnds stores the byte-offset end positions of element + // bitstreams within elemData. + // + // For example, element I's bitstream data starts at elemEnds[I-1] + // (or 0, if I==0) and ends at elemEnds[I]. + // + // Note: elemEnds is indexed by absolute indices, not + // section-relative indices. + elemEnds []uint32 + + // elemEndsEnds stores the index-offset end positions of relocation + // sections within elemEnds. + // + // For example, section K's end positions start at elemEndsEnds[K-1] + // (or 0, if K==0) and end at elemEndsEnds[K]. + elemEndsEnds [numRelocs]uint32 +} + +// PkgPath returns the package path for the package +// +// TODO(mdempsky): Remove; unneeded since CL 391014. +func (pr *PkgDecoder) PkgPath() string { return pr.pkgPath } + +// SyncMarkers reports whether pr uses sync markers. +func (pr *PkgDecoder) SyncMarkers() bool { return pr.sync } + +// NewPkgDecoder returns a PkgDecoder initialized to read the Unified +// IR export data from input. pkgPath is the package path for the +// compilation unit that produced the export data. +// +// TODO(mdempsky): Remove pkgPath parameter; unneeded since CL 391014. +func NewPkgDecoder(pkgPath, input string) PkgDecoder { + pr := PkgDecoder{ + pkgPath: pkgPath, + } + + // TODO(mdempsky): Implement direct indexing of input string to + // avoid copying the position information. + + r := strings.NewReader(input) + + assert(binary.Read(r, binary.LittleEndian, &pr.version) == nil) + + switch pr.version { + default: + panic(fmt.Errorf("unsupported version: %v", pr.version)) + case 0: + // no flags + case 1: + var flags uint32 + assert(binary.Read(r, binary.LittleEndian, &flags) == nil) + pr.sync = flags&flagSyncMarkers != 0 + } + + assert(binary.Read(r, binary.LittleEndian, pr.elemEndsEnds[:]) == nil) + + pr.elemEnds = make([]uint32, pr.elemEndsEnds[len(pr.elemEndsEnds)-1]) + assert(binary.Read(r, binary.LittleEndian, pr.elemEnds[:]) == nil) + + pos, err := r.Seek(0, os.SEEK_CUR) + assert(err == nil) + + pr.elemData = input[pos:] + assert(len(pr.elemData)-8 == int(pr.elemEnds[len(pr.elemEnds)-1])) + + return pr +} + +// NumElems returns the number of elements in section k. +func (pr *PkgDecoder) NumElems(k RelocKind) int { + count := int(pr.elemEndsEnds[k]) + if k > 0 { + count -= int(pr.elemEndsEnds[k-1]) + } + return count +} + +// TotalElems returns the total number of elements across all sections. +func (pr *PkgDecoder) TotalElems() int { + return len(pr.elemEnds) +} + +// Fingerprint returns the package fingerprint. +func (pr *PkgDecoder) Fingerprint() [8]byte { + var fp [8]byte + copy(fp[:], pr.elemData[len(pr.elemData)-8:]) + return fp +} + +// AbsIdx returns the absolute index for the given (section, index) +// pair. +func (pr *PkgDecoder) AbsIdx(k RelocKind, idx Index) int { + absIdx := int(idx) + if k > 0 { + absIdx += int(pr.elemEndsEnds[k-1]) + } + if absIdx >= int(pr.elemEndsEnds[k]) { + errorf("%v:%v is out of bounds; %v", k, idx, pr.elemEndsEnds) + } + return absIdx +} + +// DataIdx returns the raw element bitstream for the given (section, +// index) pair. +func (pr *PkgDecoder) DataIdx(k RelocKind, idx Index) string { + absIdx := pr.AbsIdx(k, idx) + + var start uint32 + if absIdx > 0 { + start = pr.elemEnds[absIdx-1] + } + end := pr.elemEnds[absIdx] + + return pr.elemData[start:end] +} + +// StringIdx returns the string value for the given string index. +func (pr *PkgDecoder) StringIdx(idx Index) string { + return pr.DataIdx(RelocString, idx) +} + +// NewDecoder returns a Decoder for the given (section, index) pair, +// and decodes the given SyncMarker from the element bitstream. +func (pr *PkgDecoder) NewDecoder(k RelocKind, idx Index, marker SyncMarker) Decoder { + r := pr.NewDecoderRaw(k, idx) + r.Sync(marker) + return r +} + +// NewDecoderRaw returns a Decoder for the given (section, index) pair. +// +// Most callers should use NewDecoder instead. +func (pr *PkgDecoder) NewDecoderRaw(k RelocKind, idx Index) Decoder { + r := Decoder{ + common: pr, + k: k, + Idx: idx, + } + + // TODO(mdempsky) r.data.Reset(...) after #44505 is resolved. + r.Data = *strings.NewReader(pr.DataIdx(k, idx)) + + r.Sync(SyncRelocs) + r.Relocs = make([]RelocEnt, r.Len()) + for i := range r.Relocs { + r.Sync(SyncReloc) + r.Relocs[i] = RelocEnt{RelocKind(r.Len()), Index(r.Len())} + } + + return r +} + +// A Decoder provides methods for decoding an individual element's +// bitstream data. +type Decoder struct { + common *PkgDecoder + + Relocs []RelocEnt + Data strings.Reader + + k RelocKind + Idx Index +} + +func (r *Decoder) checkErr(err error) { + if err != nil { + errorf("unexpected decoding error: %w", err) + } +} + +func (r *Decoder) rawUvarint() uint64 { + x, err := binary.ReadUvarint(&r.Data) + r.checkErr(err) + return x +} + +func (r *Decoder) rawVarint() int64 { + ux := r.rawUvarint() + + // Zig-zag decode. + x := int64(ux >> 1) + if ux&1 != 0 { + x = ^x + } + return x +} + +func (r *Decoder) rawReloc(k RelocKind, idx int) Index { + e := r.Relocs[idx] + assert(e.Kind == k) + return e.Idx +} + +// Sync decodes a sync marker from the element bitstream and asserts +// that it matches the expected marker. +// +// If r.common.sync is false, then Sync is a no-op. +func (r *Decoder) Sync(mWant SyncMarker) { + if !r.common.sync { + return + } + + pos, _ := r.Data.Seek(0, os.SEEK_CUR) // TODO(mdempsky): io.SeekCurrent after #44505 is resolved + mHave := SyncMarker(r.rawUvarint()) + writerPCs := make([]int, r.rawUvarint()) + for i := range writerPCs { + writerPCs[i] = int(r.rawUvarint()) + } + + if mHave == mWant { + return + } + + // There's some tension here between printing: + // + // (1) full file paths that tools can recognize (e.g., so emacs + // hyperlinks the "file:line" text for easy navigation), or + // + // (2) short file paths that are easier for humans to read (e.g., by + // omitting redundant or irrelevant details, so it's easier to + // focus on the useful bits that remain). + // + // The current formatting favors the former, as it seems more + // helpful in practice. But perhaps the formatting could be improved + // to better address both concerns. For example, use relative file + // paths if they would be shorter, or rewrite file paths to contain + // "$GOROOT" (like objabi.AbsFile does) if tools can be taught how + // to reliably expand that again. + + fmt.Printf("export data desync: package %q, section %v, index %v, offset %v\n", r.common.pkgPath, r.k, r.Idx, pos) + + fmt.Printf("\nfound %v, written at:\n", mHave) + if len(writerPCs) == 0 { + fmt.Printf("\t[stack trace unavailable; recompile package %q with -d=syncframes]\n", r.common.pkgPath) + } + for _, pc := range writerPCs { + fmt.Printf("\t%s\n", r.common.StringIdx(r.rawReloc(RelocString, pc))) + } + + fmt.Printf("\nexpected %v, reading at:\n", mWant) + var readerPCs [32]uintptr // TODO(mdempsky): Dynamically size? + n := runtime.Callers(2, readerPCs[:]) + for _, pc := range fmtFrames(readerPCs[:n]...) { + fmt.Printf("\t%s\n", pc) + } + + // We already printed a stack trace for the reader, so now we can + // simply exit. Printing a second one with panic or base.Fatalf + // would just be noise. + os.Exit(1) +} + +// Bool decodes and returns a bool value from the element bitstream. +func (r *Decoder) Bool() bool { + r.Sync(SyncBool) + x, err := r.Data.ReadByte() + r.checkErr(err) + assert(x < 2) + return x != 0 +} + +// Int64 decodes and returns an int64 value from the element bitstream. +func (r *Decoder) Int64() int64 { + r.Sync(SyncInt64) + return r.rawVarint() +} + +// Int64 decodes and returns a uint64 value from the element bitstream. +func (r *Decoder) Uint64() uint64 { + r.Sync(SyncUint64) + return r.rawUvarint() +} + +// Len decodes and returns a non-negative int value from the element bitstream. +func (r *Decoder) Len() int { x := r.Uint64(); v := int(x); assert(uint64(v) == x); return v } + +// Int decodes and returns an int value from the element bitstream. +func (r *Decoder) Int() int { x := r.Int64(); v := int(x); assert(int64(v) == x); return v } + +// Uint decodes and returns a uint value from the element bitstream. +func (r *Decoder) Uint() uint { x := r.Uint64(); v := uint(x); assert(uint64(v) == x); return v } + +// Code decodes a Code value from the element bitstream and returns +// its ordinal value. It's the caller's responsibility to convert the +// result to an appropriate Code type. +// +// TODO(mdempsky): Ideally this method would have signature "Code[T +// Code] T" instead, but we don't allow generic methods and the +// compiler can't depend on generics yet anyway. +func (r *Decoder) Code(mark SyncMarker) int { + r.Sync(mark) + return r.Len() +} + +// Reloc decodes a relocation of expected section k from the element +// bitstream and returns an index to the referenced element. +func (r *Decoder) Reloc(k RelocKind) Index { + r.Sync(SyncUseReloc) + return r.rawReloc(k, r.Len()) +} + +// String decodes and returns a string value from the element +// bitstream. +func (r *Decoder) String() string { + r.Sync(SyncString) + return r.common.StringIdx(r.Reloc(RelocString)) +} + +// Strings decodes and returns a variable-length slice of strings from +// the element bitstream. +func (r *Decoder) Strings() []string { + res := make([]string, r.Len()) + for i := range res { + res[i] = r.String() + } + return res +} + +// Value decodes and returns a constant.Value from the element +// bitstream. +func (r *Decoder) Value() constant.Value { + r.Sync(SyncValue) + isComplex := r.Bool() + val := r.scalar() + if isComplex { + val = constant.BinaryOp(val, token.ADD, constant.MakeImag(r.scalar())) + } + return val +} + +func (r *Decoder) scalar() constant.Value { + switch tag := CodeVal(r.Code(SyncVal)); tag { + default: + panic(fmt.Errorf("unexpected scalar tag: %v", tag)) + + case ValBool: + return constant.MakeBool(r.Bool()) + case ValString: + return constant.MakeString(r.String()) + case ValInt64: + return constant.MakeInt64(r.Int64()) + case ValBigInt: + return constant.Make(r.bigInt()) + case ValBigRat: + num := r.bigInt() + denom := r.bigInt() + return constant.Make(new(big.Rat).SetFrac(num, denom)) + case ValBigFloat: + return constant.Make(r.bigFloat()) + } +} + +func (r *Decoder) bigInt() *big.Int { + v := new(big.Int).SetBytes([]byte(r.String())) + if r.Bool() { + v.Neg(v) + } + return v +} + +func (r *Decoder) bigFloat() *big.Float { + v := new(big.Float).SetPrec(512) + assert(v.UnmarshalText([]byte(r.String())) == nil) + return v +} + +// @@@ Helpers + +// TODO(mdempsky): These should probably be removed. I think they're a +// smell that the export data format is not yet quite right. + +// PeekPkgPath returns the package path for the specified package +// index. +func (pr *PkgDecoder) PeekPkgPath(idx Index) string { + r := pr.NewDecoder(RelocPkg, idx, SyncPkgDef) + path := r.String() + if path == "" { + path = pr.pkgPath + } + return path +} + +// PeekObj returns the package path, object name, and CodeObj for the +// specified object index. +func (pr *PkgDecoder) PeekObj(idx Index) (string, string, CodeObj) { + r := pr.NewDecoder(RelocName, idx, SyncObject1) + r.Sync(SyncSym) + r.Sync(SyncPkg) + path := pr.PeekPkgPath(r.Reloc(RelocPkg)) + name := r.String() + assert(name != "") + + tag := CodeObj(r.Code(SyncCodeObj)) + + return path, name, tag +} diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/doc.go b/vendor/golang.org/x/tools/go/internal/pkgbits/doc.go new file mode 100644 index 0000000..c8a2796 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/doc.go @@ -0,0 +1,32 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package pkgbits implements low-level coding abstractions for +// Unified IR's export data format. +// +// At a low-level, a package is a collection of bitstream elements. +// Each element has a "kind" and a dense, non-negative index. +// Elements can be randomly accessed given their kind and index. +// +// Individual elements are sequences of variable-length values (e.g., +// integers, booleans, strings, go/constant values, cross-references +// to other elements). Package pkgbits provides APIs for encoding and +// decoding these low-level values, but the details of mapping +// higher-level Go constructs into elements is left to higher-level +// abstractions. +// +// Elements may cross-reference each other with "relocations." For +// example, an element representing a pointer type has a relocation +// referring to the element type. +// +// Go constructs may be composed as a constellation of multiple +// elements. For example, a declared function may have one element to +// describe the object (e.g., its name, type, position), and a +// separate element to describe its function body. This allows readers +// some flexibility in efficiently seeking or re-reading data (e.g., +// inlining requires re-reading the function body for each inlined +// call, without needing to re-read the object-level details). +// +// This is a copy of internal/pkgbits in the Go implementation. +package pkgbits diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/encoder.go b/vendor/golang.org/x/tools/go/internal/pkgbits/encoder.go new file mode 100644 index 0000000..c50c838 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/encoder.go @@ -0,0 +1,379 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +import ( + "bytes" + "crypto/md5" + "encoding/binary" + "go/constant" + "io" + "math/big" + "runtime" +) + +// currentVersion is the current version number. +// +// - v0: initial prototype +// +// - v1: adds the flags uint32 word +const currentVersion uint32 = 1 + +// A PkgEncoder provides methods for encoding a package's Unified IR +// export data. +type PkgEncoder struct { + // elems holds the bitstream for previously encoded elements. + elems [numRelocs][]string + + // stringsIdx maps previously encoded strings to their index within + // the RelocString section, to allow deduplication. That is, + // elems[RelocString][stringsIdx[s]] == s (if present). + stringsIdx map[string]Index + + // syncFrames is the number of frames to write at each sync + // marker. A negative value means sync markers are omitted. + syncFrames int +} + +// SyncMarkers reports whether pw uses sync markers. +func (pw *PkgEncoder) SyncMarkers() bool { return pw.syncFrames >= 0 } + +// NewPkgEncoder returns an initialized PkgEncoder. +// +// syncFrames is the number of caller frames that should be serialized +// at Sync points. Serializing additional frames results in larger +// export data files, but can help diagnosing desync errors in +// higher-level Unified IR reader/writer code. If syncFrames is +// negative, then sync markers are omitted entirely. +func NewPkgEncoder(syncFrames int) PkgEncoder { + return PkgEncoder{ + stringsIdx: make(map[string]Index), + syncFrames: syncFrames, + } +} + +// DumpTo writes the package's encoded data to out0 and returns the +// package fingerprint. +func (pw *PkgEncoder) DumpTo(out0 io.Writer) (fingerprint [8]byte) { + h := md5.New() + out := io.MultiWriter(out0, h) + + writeUint32 := func(x uint32) { + assert(binary.Write(out, binary.LittleEndian, x) == nil) + } + + writeUint32(currentVersion) + + var flags uint32 + if pw.SyncMarkers() { + flags |= flagSyncMarkers + } + writeUint32(flags) + + // Write elemEndsEnds. + var sum uint32 + for _, elems := range &pw.elems { + sum += uint32(len(elems)) + writeUint32(sum) + } + + // Write elemEnds. + sum = 0 + for _, elems := range &pw.elems { + for _, elem := range elems { + sum += uint32(len(elem)) + writeUint32(sum) + } + } + + // Write elemData. + for _, elems := range &pw.elems { + for _, elem := range elems { + _, err := io.WriteString(out, elem) + assert(err == nil) + } + } + + // Write fingerprint. + copy(fingerprint[:], h.Sum(nil)) + _, err := out0.Write(fingerprint[:]) + assert(err == nil) + + return +} + +// StringIdx adds a string value to the strings section, if not +// already present, and returns its index. +func (pw *PkgEncoder) StringIdx(s string) Index { + if idx, ok := pw.stringsIdx[s]; ok { + assert(pw.elems[RelocString][idx] == s) + return idx + } + + idx := Index(len(pw.elems[RelocString])) + pw.elems[RelocString] = append(pw.elems[RelocString], s) + pw.stringsIdx[s] = idx + return idx +} + +// NewEncoder returns an Encoder for a new element within the given +// section, and encodes the given SyncMarker as the start of the +// element bitstream. +func (pw *PkgEncoder) NewEncoder(k RelocKind, marker SyncMarker) Encoder { + e := pw.NewEncoderRaw(k) + e.Sync(marker) + return e +} + +// NewEncoderRaw returns an Encoder for a new element within the given +// section. +// +// Most callers should use NewEncoder instead. +func (pw *PkgEncoder) NewEncoderRaw(k RelocKind) Encoder { + idx := Index(len(pw.elems[k])) + pw.elems[k] = append(pw.elems[k], "") // placeholder + + return Encoder{ + p: pw, + k: k, + Idx: idx, + } +} + +// An Encoder provides methods for encoding an individual element's +// bitstream data. +type Encoder struct { + p *PkgEncoder + + Relocs []RelocEnt + Data bytes.Buffer // accumulated element bitstream data + + encodingRelocHeader bool + + k RelocKind + Idx Index // index within relocation section +} + +// Flush finalizes the element's bitstream and returns its Index. +func (w *Encoder) Flush() Index { + var sb bytes.Buffer // TODO(mdempsky): strings.Builder after #44505 is resolved + + // Backup the data so we write the relocations at the front. + var tmp bytes.Buffer + io.Copy(&tmp, &w.Data) + + // TODO(mdempsky): Consider writing these out separately so they're + // easier to strip, along with function bodies, so that we can prune + // down to just the data that's relevant to go/types. + if w.encodingRelocHeader { + panic("encodingRelocHeader already true; recursive flush?") + } + w.encodingRelocHeader = true + w.Sync(SyncRelocs) + w.Len(len(w.Relocs)) + for _, rEnt := range w.Relocs { + w.Sync(SyncReloc) + w.Len(int(rEnt.Kind)) + w.Len(int(rEnt.Idx)) + } + + io.Copy(&sb, &w.Data) + io.Copy(&sb, &tmp) + w.p.elems[w.k][w.Idx] = sb.String() + + return w.Idx +} + +func (w *Encoder) checkErr(err error) { + if err != nil { + errorf("unexpected encoding error: %v", err) + } +} + +func (w *Encoder) rawUvarint(x uint64) { + var buf [binary.MaxVarintLen64]byte + n := binary.PutUvarint(buf[:], x) + _, err := w.Data.Write(buf[:n]) + w.checkErr(err) +} + +func (w *Encoder) rawVarint(x int64) { + // Zig-zag encode. + ux := uint64(x) << 1 + if x < 0 { + ux = ^ux + } + + w.rawUvarint(ux) +} + +func (w *Encoder) rawReloc(r RelocKind, idx Index) int { + // TODO(mdempsky): Use map for lookup; this takes quadratic time. + for i, rEnt := range w.Relocs { + if rEnt.Kind == r && rEnt.Idx == idx { + return i + } + } + + i := len(w.Relocs) + w.Relocs = append(w.Relocs, RelocEnt{r, idx}) + return i +} + +func (w *Encoder) Sync(m SyncMarker) { + if !w.p.SyncMarkers() { + return + } + + // Writing out stack frame string references requires working + // relocations, but writing out the relocations themselves involves + // sync markers. To prevent infinite recursion, we simply trim the + // stack frame for sync markers within the relocation header. + var frames []string + if !w.encodingRelocHeader && w.p.syncFrames > 0 { + pcs := make([]uintptr, w.p.syncFrames) + n := runtime.Callers(2, pcs) + frames = fmtFrames(pcs[:n]...) + } + + // TODO(mdempsky): Save space by writing out stack frames as a + // linked list so we can share common stack frames. + w.rawUvarint(uint64(m)) + w.rawUvarint(uint64(len(frames))) + for _, frame := range frames { + w.rawUvarint(uint64(w.rawReloc(RelocString, w.p.StringIdx(frame)))) + } +} + +// Bool encodes and writes a bool value into the element bitstream, +// and then returns the bool value. +// +// For simple, 2-alternative encodings, the idiomatic way to call Bool +// is something like: +// +// if w.Bool(x != 0) { +// // alternative #1 +// } else { +// // alternative #2 +// } +// +// For multi-alternative encodings, use Code instead. +func (w *Encoder) Bool(b bool) bool { + w.Sync(SyncBool) + var x byte + if b { + x = 1 + } + err := w.Data.WriteByte(x) + w.checkErr(err) + return b +} + +// Int64 encodes and writes an int64 value into the element bitstream. +func (w *Encoder) Int64(x int64) { + w.Sync(SyncInt64) + w.rawVarint(x) +} + +// Uint64 encodes and writes a uint64 value into the element bitstream. +func (w *Encoder) Uint64(x uint64) { + w.Sync(SyncUint64) + w.rawUvarint(x) +} + +// Len encodes and writes a non-negative int value into the element bitstream. +func (w *Encoder) Len(x int) { assert(x >= 0); w.Uint64(uint64(x)) } + +// Int encodes and writes an int value into the element bitstream. +func (w *Encoder) Int(x int) { w.Int64(int64(x)) } + +// Len encodes and writes a uint value into the element bitstream. +func (w *Encoder) Uint(x uint) { w.Uint64(uint64(x)) } + +// Reloc encodes and writes a relocation for the given (section, +// index) pair into the element bitstream. +// +// Note: Only the index is formally written into the element +// bitstream, so bitstream decoders must know from context which +// section an encoded relocation refers to. +func (w *Encoder) Reloc(r RelocKind, idx Index) { + w.Sync(SyncUseReloc) + w.Len(w.rawReloc(r, idx)) +} + +// Code encodes and writes a Code value into the element bitstream. +func (w *Encoder) Code(c Code) { + w.Sync(c.Marker()) + w.Len(c.Value()) +} + +// String encodes and writes a string value into the element +// bitstream. +// +// Internally, strings are deduplicated by adding them to the strings +// section (if not already present), and then writing a relocation +// into the element bitstream. +func (w *Encoder) String(s string) { + w.Sync(SyncString) + w.Reloc(RelocString, w.p.StringIdx(s)) +} + +// Strings encodes and writes a variable-length slice of strings into +// the element bitstream. +func (w *Encoder) Strings(ss []string) { + w.Len(len(ss)) + for _, s := range ss { + w.String(s) + } +} + +// Value encodes and writes a constant.Value into the element +// bitstream. +func (w *Encoder) Value(val constant.Value) { + w.Sync(SyncValue) + if w.Bool(val.Kind() == constant.Complex) { + w.scalar(constant.Real(val)) + w.scalar(constant.Imag(val)) + } else { + w.scalar(val) + } +} + +func (w *Encoder) scalar(val constant.Value) { + switch v := constant.Val(val).(type) { + default: + errorf("unhandled %v (%v)", val, val.Kind()) + case bool: + w.Code(ValBool) + w.Bool(v) + case string: + w.Code(ValString) + w.String(v) + case int64: + w.Code(ValInt64) + w.Int64(v) + case *big.Int: + w.Code(ValBigInt) + w.bigInt(v) + case *big.Rat: + w.Code(ValBigRat) + w.bigInt(v.Num()) + w.bigInt(v.Denom()) + case *big.Float: + w.Code(ValBigFloat) + w.bigFloat(v) + } +} + +func (w *Encoder) bigInt(v *big.Int) { + b := v.Bytes() + w.String(string(b)) // TODO: More efficient encoding. + w.Bool(v.Sign() < 0) +} + +func (w *Encoder) bigFloat(v *big.Float) { + b := v.Append(nil, 'p', -1) + w.String(string(b)) // TODO: More efficient encoding. +} diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/flags.go b/vendor/golang.org/x/tools/go/internal/pkgbits/flags.go new file mode 100644 index 0000000..6542227 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/flags.go @@ -0,0 +1,9 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +const ( + flagSyncMarkers = 1 << iota // file format contains sync markers +) diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/frames_go1.go b/vendor/golang.org/x/tools/go/internal/pkgbits/frames_go1.go new file mode 100644 index 0000000..5294f6a --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/frames_go1.go @@ -0,0 +1,21 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !go1.7 +// +build !go1.7 + +// TODO(mdempsky): Remove after #44505 is resolved + +package pkgbits + +import "runtime" + +func walkFrames(pcs []uintptr, visit frameVisitor) { + for _, pc := range pcs { + fn := runtime.FuncForPC(pc) + file, line := fn.FileLine(pc) + + visit(file, line, fn.Name(), pc-fn.Entry()) + } +} diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/frames_go17.go b/vendor/golang.org/x/tools/go/internal/pkgbits/frames_go17.go new file mode 100644 index 0000000..2324ae7 --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/frames_go17.go @@ -0,0 +1,28 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.7 +// +build go1.7 + +package pkgbits + +import "runtime" + +// walkFrames calls visit for each call frame represented by pcs. +// +// pcs should be a slice of PCs, as returned by runtime.Callers. +func walkFrames(pcs []uintptr, visit frameVisitor) { + if len(pcs) == 0 { + return + } + + frames := runtime.CallersFrames(pcs) + for { + frame, more := frames.Next() + visit(frame.File, frame.Line, frame.Function, frame.PC-frame.Entry) + if !more { + return + } + } +} diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/reloc.go b/vendor/golang.org/x/tools/go/internal/pkgbits/reloc.go new file mode 100644 index 0000000..7a8f04a --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/reloc.go @@ -0,0 +1,42 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +// A RelocKind indicates a particular section within a unified IR export. +type RelocKind int + +// An Index represents a bitstream element index within a particular +// section. +type Index int + +// A relocEnt (relocation entry) is an entry in an element's local +// reference table. +// +// TODO(mdempsky): Rename this too. +type RelocEnt struct { + Kind RelocKind + Idx Index +} + +// Reserved indices within the meta relocation section. +const ( + PublicRootIdx Index = 0 + PrivateRootIdx Index = 1 +) + +const ( + RelocString RelocKind = iota + RelocMeta + RelocPosBase + RelocPkg + RelocName + RelocType + RelocObj + RelocObjExt + RelocObjDict + RelocBody + + numRelocs = iota +) diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/support.go b/vendor/golang.org/x/tools/go/internal/pkgbits/support.go new file mode 100644 index 0000000..ad26d3b --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/support.go @@ -0,0 +1,17 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +import "fmt" + +func assert(b bool) { + if !b { + panic("assertion failed") + } +} + +func errorf(format string, args ...interface{}) { + panic(fmt.Errorf(format, args...)) +} diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/sync.go b/vendor/golang.org/x/tools/go/internal/pkgbits/sync.go new file mode 100644 index 0000000..5bd51ef --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/sync.go @@ -0,0 +1,113 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package pkgbits + +import ( + "fmt" + "strings" +) + +// fmtFrames formats a backtrace for reporting reader/writer desyncs. +func fmtFrames(pcs ...uintptr) []string { + res := make([]string, 0, len(pcs)) + walkFrames(pcs, func(file string, line int, name string, offset uintptr) { + // Trim package from function name. It's just redundant noise. + name = strings.TrimPrefix(name, "cmd/compile/internal/noder.") + + res = append(res, fmt.Sprintf("%s:%v: %s +0x%v", file, line, name, offset)) + }) + return res +} + +type frameVisitor func(file string, line int, name string, offset uintptr) + +// SyncMarker is an enum type that represents markers that may be +// written to export data to ensure the reader and writer stay +// synchronized. +type SyncMarker int + +//go:generate stringer -type=SyncMarker -trimprefix=Sync + +const ( + _ SyncMarker = iota + + // Public markers (known to go/types importers). + + // Low-level coding markers. + SyncEOF + SyncBool + SyncInt64 + SyncUint64 + SyncString + SyncValue + SyncVal + SyncRelocs + SyncReloc + SyncUseReloc + + // Higher-level object and type markers. + SyncPublic + SyncPos + SyncPosBase + SyncObject + SyncObject1 + SyncPkg + SyncPkgDef + SyncMethod + SyncType + SyncTypeIdx + SyncTypeParamNames + SyncSignature + SyncParams + SyncParam + SyncCodeObj + SyncSym + SyncLocalIdent + SyncSelector + + // Private markers (only known to cmd/compile). + SyncPrivate + + SyncFuncExt + SyncVarExt + SyncTypeExt + SyncPragma + + SyncExprList + SyncExprs + SyncExpr + SyncExprType + SyncAssign + SyncOp + SyncFuncLit + SyncCompLit + + SyncDecl + SyncFuncBody + SyncOpenScope + SyncCloseScope + SyncCloseAnotherScope + SyncDeclNames + SyncDeclName + + SyncStmts + SyncBlockStmt + SyncIfStmt + SyncForStmt + SyncSwitchStmt + SyncRangeStmt + SyncCaseClause + SyncCommClause + SyncSelectStmt + SyncDecls + SyncLabeledStmt + SyncUseObjLocal + SyncAddLocal + SyncLinkname + SyncStmt1 + SyncStmtsEnd + SyncLabel + SyncOptLabel +) diff --git a/vendor/golang.org/x/tools/go/internal/pkgbits/syncmarker_string.go b/vendor/golang.org/x/tools/go/internal/pkgbits/syncmarker_string.go new file mode 100644 index 0000000..4a5b0ca --- /dev/null +++ b/vendor/golang.org/x/tools/go/internal/pkgbits/syncmarker_string.go @@ -0,0 +1,89 @@ +// Code generated by "stringer -type=SyncMarker -trimprefix=Sync"; DO NOT EDIT. + +package pkgbits + +import "strconv" + +func _() { + // An "invalid array index" compiler error signifies that the constant values have changed. + // Re-run the stringer command to generate them again. + var x [1]struct{} + _ = x[SyncEOF-1] + _ = x[SyncBool-2] + _ = x[SyncInt64-3] + _ = x[SyncUint64-4] + _ = x[SyncString-5] + _ = x[SyncValue-6] + _ = x[SyncVal-7] + _ = x[SyncRelocs-8] + _ = x[SyncReloc-9] + _ = x[SyncUseReloc-10] + _ = x[SyncPublic-11] + _ = x[SyncPos-12] + _ = x[SyncPosBase-13] + _ = x[SyncObject-14] + _ = x[SyncObject1-15] + _ = x[SyncPkg-16] + _ = x[SyncPkgDef-17] + _ = x[SyncMethod-18] + _ = x[SyncType-19] + _ = x[SyncTypeIdx-20] + _ = x[SyncTypeParamNames-21] + _ = x[SyncSignature-22] + _ = x[SyncParams-23] + _ = x[SyncParam-24] + _ = x[SyncCodeObj-25] + _ = x[SyncSym-26] + _ = x[SyncLocalIdent-27] + _ = x[SyncSelector-28] + _ = x[SyncPrivate-29] + _ = x[SyncFuncExt-30] + _ = x[SyncVarExt-31] + _ = x[SyncTypeExt-32] + _ = x[SyncPragma-33] + _ = x[SyncExprList-34] + _ = x[SyncExprs-35] + _ = x[SyncExpr-36] + _ = x[SyncExprType-37] + _ = x[SyncAssign-38] + _ = x[SyncOp-39] + _ = x[SyncFuncLit-40] + _ = x[SyncCompLit-41] + _ = x[SyncDecl-42] + _ = x[SyncFuncBody-43] + _ = x[SyncOpenScope-44] + _ = x[SyncCloseScope-45] + _ = x[SyncCloseAnotherScope-46] + _ = x[SyncDeclNames-47] + _ = x[SyncDeclName-48] + _ = x[SyncStmts-49] + _ = x[SyncBlockStmt-50] + _ = x[SyncIfStmt-51] + _ = x[SyncForStmt-52] + _ = x[SyncSwitchStmt-53] + _ = x[SyncRangeStmt-54] + _ = x[SyncCaseClause-55] + _ = x[SyncCommClause-56] + _ = x[SyncSelectStmt-57] + _ = x[SyncDecls-58] + _ = x[SyncLabeledStmt-59] + _ = x[SyncUseObjLocal-60] + _ = x[SyncAddLocal-61] + _ = x[SyncLinkname-62] + _ = x[SyncStmt1-63] + _ = x[SyncStmtsEnd-64] + _ = x[SyncLabel-65] + _ = x[SyncOptLabel-66] +} + +const _SyncMarker_name = "EOFBoolInt64Uint64StringValueValRelocsRelocUseRelocPublicPosPosBaseObjectObject1PkgPkgDefMethodTypeTypeIdxTypeParamNamesSignatureParamsParamCodeObjSymLocalIdentSelectorPrivateFuncExtVarExtTypeExtPragmaExprListExprsExprExprTypeAssignOpFuncLitCompLitDeclFuncBodyOpenScopeCloseScopeCloseAnotherScopeDeclNamesDeclNameStmtsBlockStmtIfStmtForStmtSwitchStmtRangeStmtCaseClauseCommClauseSelectStmtDeclsLabeledStmtUseObjLocalAddLocalLinknameStmt1StmtsEndLabelOptLabel" + +var _SyncMarker_index = [...]uint16{0, 3, 7, 12, 18, 24, 29, 32, 38, 43, 51, 57, 60, 67, 73, 80, 83, 89, 95, 99, 106, 120, 129, 135, 140, 147, 150, 160, 168, 175, 182, 188, 195, 201, 209, 214, 218, 226, 232, 234, 241, 248, 252, 260, 269, 279, 296, 305, 313, 318, 327, 333, 340, 350, 359, 369, 379, 389, 394, 405, 416, 424, 432, 437, 445, 450, 458} + +func (i SyncMarker) String() string { + i -= 1 + if i < 0 || i >= SyncMarker(len(_SyncMarker_index)-1) { + return "SyncMarker(" + strconv.FormatInt(int64(i+1), 10) + ")" + } + return _SyncMarker_name[_SyncMarker_index[i]:_SyncMarker_index[i+1]] +} diff --git a/vendor/golang.org/x/tools/go/packages/doc.go b/vendor/golang.org/x/tools/go/packages/doc.go index 3799f8e..da4ab89 100644 --- a/vendor/golang.org/x/tools/go/packages/doc.go +++ b/vendor/golang.org/x/tools/go/packages/doc.go @@ -60,15 +60,13 @@ causes Load to run in LoadFiles mode, collecting minimal information. See the documentation for type Config for details. As noted earlier, the Config.Mode controls the amount of detail -reported about the loaded packages, with each mode returning all the data of the -previous mode with some extra added. See the documentation for type LoadMode +reported about the loaded packages. See the documentation for type LoadMode for details. Most tools should pass their command-line arguments (after any flags) uninterpreted to the loader, so that the loader can interpret them according to the conventions of the underlying build system. See the Example function for typical usage. - */ package packages // import "golang.org/x/tools/go/packages" diff --git a/vendor/golang.org/x/tools/go/packages/external.go b/vendor/golang.org/x/tools/go/packages/external.go index b696b68..7242a0a 100644 --- a/vendor/golang.org/x/tools/go/packages/external.go +++ b/vendor/golang.org/x/tools/go/packages/external.go @@ -12,7 +12,8 @@ import ( "bytes" "encoding/json" "fmt" - "os/exec" + exec "golang.org/x/sys/execabs" + "os" "strings" ) @@ -76,15 +77,21 @@ func findExternalDriver(cfg *Config) driver { } buf := new(bytes.Buffer) + stderr := new(bytes.Buffer) cmd := exec.CommandContext(cfg.Context, tool, words...) cmd.Dir = cfg.Dir cmd.Env = cfg.Env cmd.Stdin = bytes.NewReader(req) cmd.Stdout = buf - cmd.Stderr = new(bytes.Buffer) + cmd.Stderr = stderr + if err := cmd.Run(); err != nil { return nil, fmt.Errorf("%v: %v: %s", tool, err, cmd.Stderr) } + if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTDRIVERERRORS") != "" { + fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(cmd), stderr) + } + var response driverResponse if err := json.Unmarshal(buf.Bytes(), &response); err != nil { return nil, err diff --git a/vendor/golang.org/x/tools/go/packages/golist.go b/vendor/golang.org/x/tools/go/packages/golist.go index dbdc791..de88156 100644 --- a/vendor/golang.org/x/tools/go/packages/golist.go +++ b/vendor/golang.org/x/tools/go/packages/golist.go @@ -6,27 +6,26 @@ package packages import ( "bytes" + "context" "encoding/json" "fmt" "go/types" "io/ioutil" "log" "os" - "os/exec" "path" "path/filepath" "reflect" - "regexp" + "sort" "strconv" "strings" "sync" - "time" "unicode" + exec "golang.org/x/sys/execabs" "golang.org/x/tools/go/internal/packagesdriver" - "golang.org/x/tools/internal/gopathwalk" - "golang.org/x/tools/internal/semver" - "golang.org/x/tools/internal/span" + "golang.org/x/tools/internal/gocommand" + "golang.org/x/tools/internal/packagesinternal" ) // debug controls verbose logging. @@ -45,16 +44,21 @@ type responseDeduper struct { dr *driverResponse } -// init fills in r with a driverResponse. -func (r *responseDeduper) init(dr *driverResponse) { - r.dr = dr - r.seenRoots = map[string]bool{} - r.seenPackages = map[string]*Package{} +func newDeduper() *responseDeduper { + return &responseDeduper{ + dr: &driverResponse{}, + seenRoots: map[string]bool{}, + seenPackages: map[string]*Package{}, + } +} + +// addAll fills in r with a driverResponse. +func (r *responseDeduper) addAll(dr *driverResponse) { for _, pkg := range dr.Packages { - r.seenPackages[pkg.ID] = pkg + r.addPackage(pkg) } for _, root := range dr.Roots { - r.seenRoots[root] = true + r.addRoot(root) } } @@ -74,25 +78,51 @@ func (r *responseDeduper) addRoot(id string) { r.dr.Roots = append(r.dr.Roots, id) } -// goInfo contains global information from the go tool. -type goInfo struct { - rootDirs map[string]string - env goEnv +type golistState struct { + cfg *Config + ctx context.Context + + envOnce sync.Once + goEnvError error + goEnv map[string]string + + rootsOnce sync.Once + rootDirsError error + rootDirs map[string]string + + goVersionOnce sync.Once + goVersionError error + goVersion int // The X in Go 1.X. + + // vendorDirs caches the (non)existence of vendor directories. + vendorDirs map[string]bool } -type goEnv struct { - modulesOn bool +// getEnv returns Go environment variables. Only specific variables are +// populated -- computing all of them is slow. +func (state *golistState) getEnv() (map[string]string, error) { + state.envOnce.Do(func() { + var b *bytes.Buffer + b, state.goEnvError = state.invokeGo("env", "-json", "GOMOD", "GOPATH") + if state.goEnvError != nil { + return + } + + state.goEnv = make(map[string]string) + decoder := json.NewDecoder(b) + if state.goEnvError = decoder.Decode(&state.goEnv); state.goEnvError != nil { + return + } + }) + return state.goEnv, state.goEnvError } -func determineEnv(cfg *Config) goEnv { - buf, err := invokeGo(cfg, "env", "GOMOD") +// mustGetEnv is a convenience function that can be used if getEnv has already succeeded. +func (state *golistState) mustGetEnv() map[string]string { + env, err := state.getEnv() if err != nil { - return goEnv{} + panic(fmt.Sprintf("mustGetEnv: %v", err)) } - gomod := bytes.TrimSpace(buf.Bytes()) - - env := goEnv{} - env.modulesOn = len(gomod) > 0 return env } @@ -100,47 +130,38 @@ func determineEnv(cfg *Config) goEnv { // the build system package structure. // See driver for more details. func goListDriver(cfg *Config, patterns ...string) (*driverResponse, error) { - var sizes types.Sizes + // Make sure that any asynchronous go commands are killed when we return. + parentCtx := cfg.Context + if parentCtx == nil { + parentCtx = context.Background() + } + ctx, cancel := context.WithCancel(parentCtx) + defer cancel() + + response := newDeduper() + + state := &golistState{ + cfg: cfg, + ctx: ctx, + vendorDirs: map[string]bool{}, + } + + // Fill in response.Sizes asynchronously if necessary. var sizeserr error var sizeswg sync.WaitGroup if cfg.Mode&NeedTypesSizes != 0 || cfg.Mode&NeedTypes != 0 { sizeswg.Add(1) go func() { - sizes, sizeserr = getSizes(cfg) + var sizes types.Sizes + sizes, sizeserr = packagesdriver.GetSizesGolist(ctx, state.cfgInvocation(), cfg.gocmdRunner) + // types.SizesFor always returns nil or a *types.StdSizes. + response.dr.Sizes, _ = sizes.(*types.StdSizes) sizeswg.Done() }() } - defer sizeswg.Wait() - - // start fetching rootDirs - var info goInfo - var rootDirsReady, envReady = make(chan struct{}), make(chan struct{}) - go func() { - info.rootDirs = determineRootDirs(cfg) - close(rootDirsReady) - }() - go func() { - info.env = determineEnv(cfg) - close(envReady) - }() - getGoInfo := func() *goInfo { - <-rootDirsReady - <-envReady - return &info - } - - // Ensure that we don't leak goroutines: Load is synchronous, so callers will - // not expect it to access the fields of cfg after the call returns. - defer getGoInfo() - - // always pass getGoInfo to golistDriver - golistDriver := func(cfg *Config, patterns ...string) (*driverResponse, error) { - return golistDriver(cfg, getGoInfo, patterns...) - } // Determine files requested in contains patterns var containFiles []string - var packagesNamed []string restPatterns := make([]string, 0, len(patterns)) // Extract file= and other [querytype]= patterns. Report an error if querytype // doesn't exist. @@ -156,8 +177,6 @@ extractQueries: containFiles = append(containFiles, value) case "pattern": restPatterns = append(restPatterns, value) - case "iamashamedtousethedisabledqueryname": - packagesNamed = append(packagesNamed, value) case "": // not a reserved query restPatterns = append(restPatterns, pattern) default: @@ -173,110 +192,105 @@ extractQueries: } } - response := &responseDeduper{} - var err error - // See if we have any patterns to pass through to go list. Zero initial // patterns also requires a go list call, since it's the equivalent of // ".". if len(restPatterns) > 0 || len(patterns) == 0 { - dr, err := golistDriver(cfg, restPatterns...) + dr, err := state.createDriverResponse(restPatterns...) if err != nil { return nil, err } - response.init(dr) - } else { - response.init(&driverResponse{}) - } - - sizeswg.Wait() - if sizeserr != nil { - return nil, sizeserr + response.addAll(dr) } - // types.SizesFor always returns nil or a *types.StdSizes - response.dr.Sizes, _ = sizes.(*types.StdSizes) - - var containsCandidates []string if len(containFiles) != 0 { - if err := runContainsQueries(cfg, golistDriver, response, containFiles, getGoInfo); err != nil { + if err := state.runContainsQueries(response, containFiles); err != nil { return nil, err } } - if len(packagesNamed) != 0 { - if err := runNamedQueries(cfg, golistDriver, response, packagesNamed); err != nil { + // Only use go/packages' overlay processing if we're using a Go version + // below 1.16. Otherwise, go list handles it. + if goVersion, err := state.getGoVersion(); err == nil && goVersion < 16 { + modifiedPkgs, needPkgs, err := state.processGolistOverlay(response) + if err != nil { return nil, err } - } - modifiedPkgs, needPkgs, err := processGolistOverlay(cfg, response, getGoInfo) - if err != nil { - return nil, err - } - if len(containFiles) > 0 { - containsCandidates = append(containsCandidates, modifiedPkgs...) - containsCandidates = append(containsCandidates, needPkgs...) - } - if err := addNeededOverlayPackages(cfg, golistDriver, response, needPkgs, getGoInfo); err != nil { - return nil, err - } - // Check candidate packages for containFiles. - if len(containFiles) > 0 { - for _, id := range containsCandidates { - pkg, ok := response.seenPackages[id] - if !ok { - response.addPackage(&Package{ - ID: id, - Errors: []Error{ - { + var containsCandidates []string + if len(containFiles) > 0 { + containsCandidates = append(containsCandidates, modifiedPkgs...) + containsCandidates = append(containsCandidates, needPkgs...) + } + if err := state.addNeededOverlayPackages(response, needPkgs); err != nil { + return nil, err + } + // Check candidate packages for containFiles. + if len(containFiles) > 0 { + for _, id := range containsCandidates { + pkg, ok := response.seenPackages[id] + if !ok { + response.addPackage(&Package{ + ID: id, + Errors: []Error{{ Kind: ListError, Msg: fmt.Sprintf("package %s expected but not seen", id), - }, - }, - }) - continue - } - for _, f := range containFiles { - for _, g := range pkg.GoFiles { - if sameFile(f, g) { - response.addRoot(id) + }}, + }) + continue + } + for _, f := range containFiles { + for _, g := range pkg.GoFiles { + if sameFile(f, g) { + response.addRoot(id) + } } } } } + // Add root for any package that matches a pattern. This applies only to + // packages that are modified by overlays, since they are not added as + // roots automatically. + for _, pattern := range restPatterns { + match := matchPattern(pattern) + for _, pkgID := range modifiedPkgs { + pkg, ok := response.seenPackages[pkgID] + if !ok { + continue + } + if match(pkg.PkgPath) { + response.addRoot(pkg.ID) + } + } + } } + sizeswg.Wait() + if sizeserr != nil { + return nil, sizeserr + } return response.dr, nil } -func addNeededOverlayPackages(cfg *Config, driver driver, response *responseDeduper, pkgs []string, getGoInfo func() *goInfo) error { +func (state *golistState) addNeededOverlayPackages(response *responseDeduper, pkgs []string) error { if len(pkgs) == 0 { return nil } - drivercfg := *cfg - if getGoInfo().env.modulesOn { - drivercfg.BuildFlags = append(drivercfg.BuildFlags, "-mod=readonly") - } - dr, err := driver(&drivercfg, pkgs...) - + dr, err := state.createDriverResponse(pkgs...) if err != nil { return err } for _, pkg := range dr.Packages { response.addPackage(pkg) } - _, needPkgs, err := processGolistOverlay(cfg, response, getGoInfo) + _, needPkgs, err := state.processGolistOverlay(response) if err != nil { return err } - if err := addNeededOverlayPackages(cfg, driver, response, needPkgs, getGoInfo); err != nil { - return err - } - return nil + return state.addNeededOverlayPackages(response, needPkgs) } -func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, queries []string, goInfo func() *goInfo) error { +func (state *golistState) runContainsQueries(response *responseDeduper, queries []string) error { for _, query := range queries { // TODO(matloob): Do only one query per directory. fdir := filepath.Dir(query) @@ -286,42 +300,17 @@ func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, q if err != nil { return fmt.Errorf("could not determine absolute path of file= query path %q: %v", query, err) } - dirResponse, err := driver(cfg, pattern) - if err != nil { - var queryErr error - if dirResponse, queryErr = adHocPackage(cfg, driver, pattern, query); queryErr != nil { - return err // return the original error - } - } - // `go list` can report errors for files that are not listed as part of a package's GoFiles. - // In the case of an invalid Go file, we should assume that it is part of package if only - // one package is in the response. The file may have valid contents in an overlay. - if len(dirResponse.Packages) == 1 { - pkg := dirResponse.Packages[0] - for i, err := range pkg.Errors { - s := errorSpan(err) - if !s.IsValid() { - break - } - if len(pkg.CompiledGoFiles) == 0 { - break - } - dir := filepath.Dir(pkg.CompiledGoFiles[0]) - filename := filepath.Join(dir, filepath.Base(s.URI().Filename())) - if info, err := os.Stat(filename); err != nil || info.IsDir() { - break - } - if !contains(pkg.CompiledGoFiles, filename) { - pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, filename) - pkg.GoFiles = append(pkg.GoFiles, filename) - pkg.Errors = append(pkg.Errors[:i], pkg.Errors[i+1:]...) - } - } - } - // A final attempt to construct an ad-hoc package. - if len(dirResponse.Packages) == 1 && len(dirResponse.Packages[0].Errors) == 1 { + dirResponse, err := state.createDriverResponse(pattern) + + // If there was an error loading the package, or no packages are returned, + // or the package is returned with errors, try to load the file as an + // ad-hoc package. + // Usually the error will appear in a returned package, but may not if we're + // in module mode and the ad-hoc is located outside a module. + if err != nil || len(dirResponse.Packages) == 0 || len(dirResponse.Packages) == 1 && len(dirResponse.Packages[0].GoFiles) == 0 && + len(dirResponse.Packages[0].Errors) == 1 { var queryErr error - if dirResponse, queryErr = adHocPackage(cfg, driver, pattern, query); queryErr != nil { + if dirResponse, queryErr = state.adhocPackage(pattern, query); queryErr != nil { return err // return the original error } } @@ -350,376 +339,85 @@ func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, q return nil } -// adHocPackage attempts to construct an ad-hoc package given a query that failed. -func adHocPackage(cfg *Config, driver driver, pattern, query string) (*driverResponse, error) { - // There was an error loading the package. Try to load the file as an ad-hoc package. - // Usually the error will appear in a returned package, but may not if we're in modules mode - // and the ad-hoc is located outside a module. - dirResponse, err := driver(cfg, query) +// adhocPackage attempts to load or construct an ad-hoc package for a given +// query, if the original call to the driver produced inadequate results. +func (state *golistState) adhocPackage(pattern, query string) (*driverResponse, error) { + response, err := state.createDriverResponse(query) if err != nil { return nil, err } - // If we get nothing back from `go list`, try to make this file into its own ad-hoc package. - if len(dirResponse.Packages) == 0 && err == nil { - dirResponse.Packages = append(dirResponse.Packages, &Package{ + // If we get nothing back from `go list`, + // try to make this file into its own ad-hoc package. + // TODO(rstambler): Should this check against the original response? + if len(response.Packages) == 0 { + response.Packages = append(response.Packages, &Package{ ID: "command-line-arguments", PkgPath: query, GoFiles: []string{query}, CompiledGoFiles: []string{query}, Imports: make(map[string]*Package), }) - dirResponse.Roots = append(dirResponse.Roots, "command-line-arguments") + response.Roots = append(response.Roots, "command-line-arguments") } - // Special case to handle issue #33482: - // If this is a file= query for ad-hoc packages where the file only exists on an overlay, - // and exists outside of a module, add the file in for the package. - if len(dirResponse.Packages) == 1 && (dirResponse.Packages[0].ID == "command-line-arguments" || dirResponse.Packages[0].PkgPath == filepath.ToSlash(query)) { - if len(dirResponse.Packages[0].GoFiles) == 0 { - filename := filepath.Join(pattern, filepath.Base(query)) // avoid recomputing abspath - // TODO(matloob): check if the file is outside of a root dir? - for path := range cfg.Overlay { - if path == filename { - dirResponse.Packages[0].Errors = nil - dirResponse.Packages[0].GoFiles = []string{path} - dirResponse.Packages[0].CompiledGoFiles = []string{path} - } - } - } - } - return dirResponse, nil -} - -func contains(files []string, filename string) bool { - for _, f := range files { - if f == filename { - return true - } - } - return false -} - -// errorSpan attempts to parse a standard `go list` error message -// by stripping off the trailing error message. -// -// It works only on errors whose message is prefixed by colon, -// followed by a space (": "). For example: -// -// attributes.go:13:1: expected 'package', found 'type' -// -func errorSpan(err Error) span.Span { - if err.Pos == "" { - input := strings.TrimSpace(err.Msg) - msgIndex := strings.Index(input, ": ") - if msgIndex < 0 { - return span.Parse(input) - } - return span.Parse(input[:msgIndex]) - } - return span.Parse(err.Pos) -} - -// modCacheRegexp splits a path in a module cache into module, module version, and package. -var modCacheRegexp = regexp.MustCompile(`(.*)@([^/\\]*)(.*)`) - -func runNamedQueries(cfg *Config, driver driver, response *responseDeduper, queries []string) error { - // calling `go env` isn't free; bail out if there's nothing to do. - if len(queries) == 0 { - return nil - } - // Determine which directories are relevant to scan. - roots, modRoot, err := roots(cfg) - if err != nil { - return err - } - - // Scan the selected directories. Simple matches, from GOPATH/GOROOT - // or the local module, can simply be "go list"ed. Matches from the - // module cache need special treatment. - var matchesMu sync.Mutex - var simpleMatches, modCacheMatches []string - add := func(root gopathwalk.Root, dir string) { - // Walk calls this concurrently; protect the result slices. - matchesMu.Lock() - defer matchesMu.Unlock() - - path := dir - if dir != root.Path { - path = dir[len(root.Path)+1:] - } - if pathMatchesQueries(path, queries) { - switch root.Type { - case gopathwalk.RootModuleCache: - modCacheMatches = append(modCacheMatches, path) - case gopathwalk.RootCurrentModule: - // We'd need to read go.mod to find the full - // import path. Relative's easier. - rel, err := filepath.Rel(cfg.Dir, dir) - if err != nil { - // This ought to be impossible, since - // we found dir in the current module. - panic(err) - } - simpleMatches = append(simpleMatches, "./"+rel) - case gopathwalk.RootGOPATH, gopathwalk.RootGOROOT: - simpleMatches = append(simpleMatches, path) - } - } - } - - startWalk := time.Now() - gopathwalk.Walk(roots, add, gopathwalk.Options{ModulesEnabled: modRoot != "", Debug: debug}) - cfg.Logf("%v for walk", time.Since(startWalk)) - - // Weird special case: the top-level package in a module will be in - // whatever directory the user checked the repository out into. It's - // more reasonable for that to not match the package name. So, if there - // are any Go files in the mod root, query it just to be safe. - if modRoot != "" { - rel, err := filepath.Rel(cfg.Dir, modRoot) - if err != nil { - panic(err) // See above. - } - - files, err := ioutil.ReadDir(modRoot) - if err != nil { - panic(err) // See above. - } - - for _, f := range files { - if strings.HasSuffix(f.Name(), ".go") { - simpleMatches = append(simpleMatches, rel) - break - } - } - } - - addResponse := func(r *driverResponse) { - for _, pkg := range r.Packages { - response.addPackage(pkg) - for _, name := range queries { - if pkg.Name == name { - response.addRoot(pkg.ID) - break + // Handle special cases. + if len(response.Packages) == 1 { + // golang/go#33482: If this is a file= query for ad-hoc packages where + // the file only exists on an overlay, and exists outside of a module, + // add the file to the package and remove the errors. + if response.Packages[0].ID == "command-line-arguments" || + filepath.ToSlash(response.Packages[0].PkgPath) == filepath.ToSlash(query) { + if len(response.Packages[0].GoFiles) == 0 { + filename := filepath.Join(pattern, filepath.Base(query)) // avoid recomputing abspath + // TODO(matloob): check if the file is outside of a root dir? + for path := range state.cfg.Overlay { + if path == filename { + response.Packages[0].Errors = nil + response.Packages[0].GoFiles = []string{path} + response.Packages[0].CompiledGoFiles = []string{path} + } } } } } - - if len(simpleMatches) != 0 { - resp, err := driver(cfg, simpleMatches...) - if err != nil { - return err - } - addResponse(resp) - } - - // Module cache matches are tricky. We want to avoid downloading new - // versions of things, so we need to use the ones present in the cache. - // go list doesn't accept version specifiers, so we have to write out a - // temporary module, and do the list in that module. - if len(modCacheMatches) != 0 { - // Collect all the matches, deduplicating by major version - // and preferring the newest. - type modInfo struct { - mod string - major string - } - mods := make(map[modInfo]string) - var imports []string - for _, modPath := range modCacheMatches { - matches := modCacheRegexp.FindStringSubmatch(modPath) - mod, ver := filepath.ToSlash(matches[1]), matches[2] - importPath := filepath.ToSlash(filepath.Join(matches[1], matches[3])) - - major := semver.Major(ver) - if prevVer, ok := mods[modInfo{mod, major}]; !ok || semver.Compare(ver, prevVer) > 0 { - mods[modInfo{mod, major}] = ver - } - - imports = append(imports, importPath) - } - - // Build the temporary module. - var gomod bytes.Buffer - gomod.WriteString("module modquery\nrequire (\n") - for mod, version := range mods { - gomod.WriteString("\t" + mod.mod + " " + version + "\n") - } - gomod.WriteString(")\n") - - tmpCfg := *cfg - - // We're only trying to look at stuff in the module cache, so - // disable the network. This should speed things up, and has - // prevented errors in at least one case, #28518. - tmpCfg.Env = append([]string{"GOPROXY=off"}, cfg.Env...) - - var err error - tmpCfg.Dir, err = ioutil.TempDir("", "gopackages-modquery") - if err != nil { - return err - } - defer os.RemoveAll(tmpCfg.Dir) - - if err := ioutil.WriteFile(filepath.Join(tmpCfg.Dir, "go.mod"), gomod.Bytes(), 0777); err != nil { - return fmt.Errorf("writing go.mod for module cache query: %v", err) - } - - // Run the query, using the import paths calculated from the matches above. - resp, err := driver(&tmpCfg, imports...) - if err != nil { - return fmt.Errorf("querying module cache matches: %v", err) - } - addResponse(resp) - } - - return nil -} - -func getSizes(cfg *Config) (types.Sizes, error) { - return packagesdriver.GetSizesGolist(cfg.Context, cfg.BuildFlags, cfg.Env, cfg.Dir, usesExportData(cfg)) -} - -// roots selects the appropriate paths to walk based on the passed-in configuration, -// particularly the environment and the presence of a go.mod in cfg.Dir's parents. -func roots(cfg *Config) ([]gopathwalk.Root, string, error) { - stdout, err := invokeGo(cfg, "env", "GOROOT", "GOPATH", "GOMOD") - if err != nil { - return nil, "", err - } - - fields := strings.Split(stdout.String(), "\n") - if len(fields) != 4 || len(fields[3]) != 0 { - return nil, "", fmt.Errorf("go env returned unexpected output: %q", stdout.String()) - } - goroot, gopath, gomod := fields[0], filepath.SplitList(fields[1]), fields[2] - var modDir string - if gomod != "" { - modDir = filepath.Dir(gomod) - } - - var roots []gopathwalk.Root - // Always add GOROOT. - roots = append(roots, gopathwalk.Root{ - Path: filepath.Join(goroot, "/src"), - Type: gopathwalk.RootGOROOT, - }) - // If modules are enabled, scan the module dir. - if modDir != "" { - roots = append(roots, gopathwalk.Root{ - Path: modDir, - Type: gopathwalk.RootCurrentModule, - }) - } - // Add either GOPATH/src or GOPATH/pkg/mod, depending on module mode. - for _, p := range gopath { - if modDir != "" { - roots = append(roots, gopathwalk.Root{ - Path: filepath.Join(p, "/pkg/mod"), - Type: gopathwalk.RootModuleCache, - }) - } else { - roots = append(roots, gopathwalk.Root{ - Path: filepath.Join(p, "/src"), - Type: gopathwalk.RootGOPATH, - }) - } - } - - return roots, modDir, nil -} - -// These functions were copied from goimports. See further documentation there. - -// pathMatchesQueries is adapted from pkgIsCandidate. -// TODO: is it reasonable to do Contains here, rather than an exact match on a path component? -func pathMatchesQueries(path string, queries []string) bool { - lastTwo := lastTwoComponents(path) - for _, query := range queries { - if strings.Contains(lastTwo, query) { - return true - } - if hasHyphenOrUpperASCII(lastTwo) && !hasHyphenOrUpperASCII(query) { - lastTwo = lowerASCIIAndRemoveHyphen(lastTwo) - if strings.Contains(lastTwo, query) { - return true - } - } - } - return false -} - -// lastTwoComponents returns at most the last two path components -// of v, using either / or \ as the path separator. -func lastTwoComponents(v string) string { - nslash := 0 - for i := len(v) - 1; i >= 0; i-- { - if v[i] == '/' || v[i] == '\\' { - nslash++ - if nslash == 2 { - return v[i:] - } - } - } - return v -} - -func hasHyphenOrUpperASCII(s string) bool { - for i := 0; i < len(s); i++ { - b := s[i] - if b == '-' || ('A' <= b && b <= 'Z') { - return true - } - } - return false -} - -func lowerASCIIAndRemoveHyphen(s string) (ret string) { - buf := make([]byte, 0, len(s)) - for i := 0; i < len(s); i++ { - b := s[i] - switch { - case b == '-': - continue - case 'A' <= b && b <= 'Z': - buf = append(buf, b+('a'-'A')) - default: - buf = append(buf, b) - } - } - return string(buf) + return response, nil } // Fields must match go list; // see $GOROOT/src/cmd/go/internal/load/pkg.go. type jsonPackage struct { - ImportPath string - Dir string - Name string - Export string - GoFiles []string - CompiledGoFiles []string - CFiles []string - CgoFiles []string - CXXFiles []string - MFiles []string - HFiles []string - FFiles []string - SFiles []string - SwigFiles []string - SwigCXXFiles []string - SysoFiles []string - Imports []string - ImportMap map[string]string - Deps []string - TestGoFiles []string - TestImports []string - XTestGoFiles []string - XTestImports []string - ForTest string // q in a "p [q.test]" package, else "" - DepOnly bool - - Error *jsonPackageError + ImportPath string + Dir string + Name string + Export string + GoFiles []string + CompiledGoFiles []string + IgnoredGoFiles []string + IgnoredOtherFiles []string + EmbedPatterns []string + EmbedFiles []string + CFiles []string + CgoFiles []string + CXXFiles []string + MFiles []string + HFiles []string + FFiles []string + SFiles []string + SwigFiles []string + SwigCXXFiles []string + SysoFiles []string + Imports []string + ImportMap map[string]string + Deps []string + Module *Module + TestGoFiles []string + TestImports []string + XTestGoFiles []string + XTestImports []string + ForTest string // q in a "p [q.test]" package, else "" + DepOnly bool + + Error *packagesinternal.PackageError + DepsErrors []*packagesinternal.PackageError } type jsonPackageError struct { @@ -732,10 +430,9 @@ func otherFiles(p *jsonPackage) [][]string { return [][]string{p.CFiles, p.CXXFiles, p.MFiles, p.HFiles, p.FFiles, p.SFiles, p.SwigFiles, p.SwigCXXFiles, p.SysoFiles} } -// golistDriver uses the "go list" command to expand the pattern -// words and return metadata for the specified packages. dir may be -// "" and env may be nil, as per os/exec.Command. -func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driverResponse, error) { +// createDriverResponse uses the "go list" command to expand the pattern +// words and return a response for the specified packages. +func (state *golistState) createDriverResponse(words ...string) (*driverResponse, error) { // go list uses the following identifiers in ImportPath and Imports: // // "p" -- importable package or main (command) @@ -749,11 +446,17 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv // Run "go list" for complete // information on the specified packages. - buf, err := invokeGo(cfg, golistargs(cfg, words)...) + goVersion, err := state.getGoVersion() + if err != nil { + return nil, err + } + buf, err := state.invokeGo("list", golistargs(state.cfg, words, goVersion)...) if err != nil { return nil, err } seen := make(map[string]*jsonPackage) + pkgs := make(map[string]*Package) + additionalErrors := make(map[string][]Error) // Decode the JSON and convert it to Package form. var response driverResponse for dec := json.NewDecoder(buf); dec.More(); { @@ -784,18 +487,81 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv // contained in a known module or GOPATH entry. This will allow the package to be // properly "reclaimed" when overlays are processed. if filepath.IsAbs(p.ImportPath) && p.Error != nil { - pkgPath, ok := getPkgPath(cfg, p.ImportPath, rootsDirs) + pkgPath, ok, err := state.getPkgPath(p.ImportPath) + if err != nil { + return nil, err + } if ok { p.ImportPath = pkgPath } } if old, found := seen[p.ImportPath]; found { - if !reflect.DeepEqual(p, old) { - return nil, fmt.Errorf("internal error: go list gives conflicting information for package %v", p.ImportPath) + // If one version of the package has an error, and the other doesn't, assume + // that this is a case where go list is reporting a fake dependency variant + // of the imported package: When a package tries to invalidly import another + // package, go list emits a variant of the imported package (with the same + // import path, but with an error on it, and the package will have a + // DepError set on it). An example of when this can happen is for imports of + // main packages: main packages can not be imported, but they may be + // separately matched and listed by another pattern. + // See golang.org/issue/36188 for more details. + + // The plan is that eventually, hopefully in Go 1.15, the error will be + // reported on the importing package rather than the duplicate "fake" + // version of the imported package. Once all supported versions of Go + // have the new behavior this logic can be deleted. + // TODO(matloob): delete the workaround logic once all supported versions of + // Go return the errors on the proper package. + + // There should be exactly one version of a package that doesn't have an + // error. + if old.Error == nil && p.Error == nil { + if !reflect.DeepEqual(p, old) { + return nil, fmt.Errorf("internal error: go list gives conflicting information for package %v", p.ImportPath) + } + continue } - // skip the duplicate - continue + + // Determine if this package's error needs to be bubbled up. + // This is a hack, and we expect for go list to eventually set the error + // on the package. + if old.Error != nil { + var errkind string + if strings.Contains(old.Error.Err, "not an importable package") { + errkind = "not an importable package" + } else if strings.Contains(old.Error.Err, "use of internal package") && strings.Contains(old.Error.Err, "not allowed") { + errkind = "use of internal package not allowed" + } + if errkind != "" { + if len(old.Error.ImportStack) < 1 { + return nil, fmt.Errorf(`internal error: go list gave a %q error with empty import stack`, errkind) + } + importingPkg := old.Error.ImportStack[len(old.Error.ImportStack)-1] + if importingPkg == old.ImportPath { + // Using an older version of Go which put this package itself on top of import + // stack, instead of the importer. Look for importer in second from top + // position. + if len(old.Error.ImportStack) < 2 { + return nil, fmt.Errorf(`internal error: go list gave a %q error with an import stack without importing package`, errkind) + } + importingPkg = old.Error.ImportStack[len(old.Error.ImportStack)-2] + } + additionalErrors[importingPkg] = append(additionalErrors[importingPkg], Error{ + Pos: old.Error.Pos, + Msg: old.Error.Err, + Kind: ListError, + }) + } + } + + // Make sure that if there's a version of the package without an error, + // that's the one reported to the user. + if old.Error == nil { + continue + } + + // This package will replace the old one at the end of the loop. } seen[p.ImportPath] = p @@ -805,6 +571,31 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv GoFiles: absJoin(p.Dir, p.GoFiles, p.CgoFiles), CompiledGoFiles: absJoin(p.Dir, p.CompiledGoFiles), OtherFiles: absJoin(p.Dir, otherFiles(p)...), + EmbedFiles: absJoin(p.Dir, p.EmbedFiles), + EmbedPatterns: absJoin(p.Dir, p.EmbedPatterns), + IgnoredFiles: absJoin(p.Dir, p.IgnoredGoFiles, p.IgnoredOtherFiles), + forTest: p.ForTest, + depsErrors: p.DepsErrors, + Module: p.Module, + } + + if (state.cfg.Mode&typecheckCgo) != 0 && len(p.CgoFiles) != 0 { + if len(p.CompiledGoFiles) > len(p.GoFiles) { + // We need the cgo definitions, which are in the first + // CompiledGoFile after the non-cgo ones. This is a hack but there + // isn't currently a better way to find it. We also need the pure + // Go files and unprocessed cgo files, all of which are already + // in pkg.GoFiles. + cgoTypes := p.CompiledGoFiles[len(p.GoFiles)] + pkg.CompiledGoFiles = append([]string{cgoTypes}, pkg.GoFiles...) + } else { + // golang/go#38990: go list silently fails to do cgo processing + pkg.CompiledGoFiles = nil + pkg.Errors = append(pkg.Errors, Error{ + Msg: "go list failed to return CompiledGoFiles. This may indicate failure to perform cgo processing; try building at the command line. See https://golang.org/issue/38990.", + Kind: ListError, + }) + } } // Work around https://golang.org/issue/28749: @@ -880,36 +671,114 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv pkg.CompiledGoFiles = pkg.GoFiles } + // Temporary work-around for golang/go#39986. Parse filenames out of + // error messages. This happens if there are unrecoverable syntax + // errors in the source, so we can't match on a specific error message. + if err := p.Error; err != nil && state.shouldAddFilenameFromError(p) { + addFilenameFromPos := func(pos string) bool { + split := strings.Split(pos, ":") + if len(split) < 1 { + return false + } + filename := strings.TrimSpace(split[0]) + if filename == "" { + return false + } + if !filepath.IsAbs(filename) { + filename = filepath.Join(state.cfg.Dir, filename) + } + info, _ := os.Stat(filename) + if info == nil { + return false + } + pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, filename) + pkg.GoFiles = append(pkg.GoFiles, filename) + return true + } + found := addFilenameFromPos(err.Pos) + // In some cases, go list only reports the error position in the + // error text, not the error position. One such case is when the + // file's package name is a keyword (see golang.org/issue/39763). + if !found { + addFilenameFromPos(err.Err) + } + } + if p.Error != nil { + msg := strings.TrimSpace(p.Error.Err) // Trim to work around golang.org/issue/32363. + // Address golang.org/issue/35964 by appending import stack to error message. + if msg == "import cycle not allowed" && len(p.Error.ImportStack) != 0 { + msg += fmt.Sprintf(": import stack: %v", p.Error.ImportStack) + } pkg.Errors = append(pkg.Errors, Error{ - Pos: p.Error.Pos, - Msg: strings.TrimSpace(p.Error.Err), // Trim to work around golang.org/issue/32363. + Pos: p.Error.Pos, + Msg: msg, + Kind: ListError, }) } + pkgs[pkg.ID] = pkg + } + + for id, errs := range additionalErrors { + if p, ok := pkgs[id]; ok { + p.Errors = append(p.Errors, errs...) + } + } + for _, pkg := range pkgs { response.Packages = append(response.Packages, pkg) } + sort.Slice(response.Packages, func(i, j int) bool { return response.Packages[i].ID < response.Packages[j].ID }) return &response, nil } -// getPkgPath finds the package path of a directory if it's relative to a root directory. -func getPkgPath(cfg *Config, dir string, goInfo func() *goInfo) (string, bool) { +func (state *golistState) shouldAddFilenameFromError(p *jsonPackage) bool { + if len(p.GoFiles) > 0 || len(p.CompiledGoFiles) > 0 { + return false + } + + goV, err := state.getGoVersion() + if err != nil { + return false + } + + // On Go 1.14 and earlier, only add filenames from errors if the import stack is empty. + // The import stack behaves differently for these versions than newer Go versions. + if goV < 15 { + return len(p.Error.ImportStack) == 0 + } + + // On Go 1.15 and later, only parse filenames out of error if there's no import stack, + // or the current package is at the top of the import stack. This is not guaranteed + // to work perfectly, but should avoid some cases where files in errors don't belong to this + // package. + return len(p.Error.ImportStack) == 0 || p.Error.ImportStack[len(p.Error.ImportStack)-1] == p.ImportPath +} + +func (state *golistState) getGoVersion() (int, error) { + state.goVersionOnce.Do(func() { + state.goVersion, state.goVersionError = gocommand.GoVersion(state.ctx, state.cfgInvocation(), state.cfg.gocmdRunner) + }) + return state.goVersion, state.goVersionError +} + +// getPkgPath finds the package path of a directory if it's relative to a root +// directory. +func (state *golistState) getPkgPath(dir string) (string, bool, error) { absDir, err := filepath.Abs(dir) if err != nil { - cfg.Logf("error getting absolute path of %s: %v", dir, err) - return "", false + return "", false, err } - for rdir, rpath := range goInfo().rootDirs { - absRdir, err := filepath.Abs(rdir) - if err != nil { - cfg.Logf("error getting absolute path of %s: %v", rdir, err) - continue - } + roots, err := state.determineRootDirs() + if err != nil { + return "", false, err + } + + for rdir, rpath := range roots { // Make sure that the directory is in the module, // to avoid creating a path relative to another module. - if !strings.HasPrefix(absDir, absRdir) { - cfg.Logf("%s does not have prefix %s", absDir, absRdir) + if !strings.HasPrefix(absDir, rdir) { continue } // TODO(matloob): This doesn't properly handle symlinks. @@ -924,11 +793,11 @@ func getPkgPath(cfg *Config, dir string, goInfo func() *goInfo) (string, bool) { // Once the file is saved, gopls, or the next invocation of the tool will get the correct // result straight from golist. // TODO(matloob): Implement module tiebreaking? - return path.Join(rpath, filepath.ToSlash(r)), true + return path.Join(rpath, filepath.ToSlash(r)), true, nil } - return filepath.ToSlash(r), true + return filepath.ToSlash(r), true, nil } - return "", false + return "", false, nil } // absJoin absolutizes and flattens the lists of files. @@ -944,17 +813,83 @@ func absJoin(dir string, fileses ...[]string) (res []string) { return res } -func golistargs(cfg *Config, words []string) []string { +func jsonFlag(cfg *Config, goVersion int) string { + if goVersion < 19 { + return "-json" + } + var fields []string + added := make(map[string]bool) + addFields := func(fs ...string) { + for _, f := range fs { + if !added[f] { + added[f] = true + fields = append(fields, f) + } + } + } + addFields("Name", "ImportPath", "Error") // These fields are always needed + if cfg.Mode&NeedFiles != 0 || cfg.Mode&NeedTypes != 0 { + addFields("Dir", "GoFiles", "IgnoredGoFiles", "IgnoredOtherFiles", "CFiles", + "CgoFiles", "CXXFiles", "MFiles", "HFiles", "FFiles", "SFiles", + "SwigFiles", "SwigCXXFiles", "SysoFiles") + if cfg.Tests { + addFields("TestGoFiles", "XTestGoFiles") + } + } + if cfg.Mode&NeedTypes != 0 { + // CompiledGoFiles seems to be required for the test case TestCgoNoSyntax, + // even when -compiled isn't passed in. + // TODO(#52435): Should we make the test ask for -compiled, or automatically + // request CompiledGoFiles in certain circumstances? + addFields("Dir", "CompiledGoFiles") + } + if cfg.Mode&NeedCompiledGoFiles != 0 { + addFields("Dir", "CompiledGoFiles", "Export") + } + if cfg.Mode&NeedImports != 0 { + // When imports are requested, DepOnly is used to distinguish between packages + // explicitly requested and transitive imports of those packages. + addFields("DepOnly", "Imports", "ImportMap") + if cfg.Tests { + addFields("TestImports", "XTestImports") + } + } + if cfg.Mode&NeedDeps != 0 { + addFields("DepOnly") + } + if usesExportData(cfg) { + // Request Dir in the unlikely case Export is not absolute. + addFields("Dir", "Export") + } + if cfg.Mode&needInternalForTest != 0 { + addFields("ForTest") + } + if cfg.Mode&needInternalDepsErrors != 0 { + addFields("DepsErrors") + } + if cfg.Mode&NeedModule != 0 { + addFields("Module") + } + if cfg.Mode&NeedEmbedFiles != 0 { + addFields("EmbedFiles") + } + if cfg.Mode&NeedEmbedPatterns != 0 { + addFields("EmbedPatterns") + } + return "-json=" + strings.Join(fields, ",") +} + +func golistargs(cfg *Config, words []string, goVersion int) []string { const findFlags = NeedImports | NeedTypes | NeedSyntax | NeedTypesInfo fullargs := []string{ - "list", "-e", "-json", - fmt.Sprintf("-compiled=%t", cfg.Mode&(NeedCompiledGoFiles|NeedSyntax|NeedTypesInfo|NeedTypesSizes) != 0), + "-e", jsonFlag(cfg, goVersion), + fmt.Sprintf("-compiled=%t", cfg.Mode&(NeedCompiledGoFiles|NeedSyntax|NeedTypes|NeedTypesInfo|NeedTypesSizes) != 0), fmt.Sprintf("-test=%t", cfg.Tests), fmt.Sprintf("-export=%t", usesExportData(cfg)), fmt.Sprintf("-deps=%t", cfg.Mode&NeedImports != 0), // go list doesn't let you pass -test and -find together, // probably because you'd just get the TestMain. - fmt.Sprintf("-find=%t", !cfg.Tests && cfg.Mode&findFlags == 0), + fmt.Sprintf("-find=%t", !cfg.Tests && cfg.Mode&findFlags == 0 && !usesExportData(cfg)), } fullargs = append(fullargs, cfg.BuildFlags...) fullargs = append(fullargs, "--") @@ -962,26 +897,53 @@ func golistargs(cfg *Config, words []string) []string { return fullargs } +// cfgInvocation returns an Invocation that reflects cfg's settings. +func (state *golistState) cfgInvocation() gocommand.Invocation { + cfg := state.cfg + return gocommand.Invocation{ + BuildFlags: cfg.BuildFlags, + ModFile: cfg.modFile, + ModFlag: cfg.modFlag, + CleanEnv: cfg.Env != nil, + Env: cfg.Env, + Logf: cfg.Logf, + WorkingDir: cfg.Dir, + } +} + // invokeGo returns the stdout of a go command invocation. -func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) { - stdout := new(bytes.Buffer) - stderr := new(bytes.Buffer) - cmd := exec.CommandContext(cfg.Context, "go", args...) - // On darwin the cwd gets resolved to the real path, which breaks anything that - // expects the working directory to keep the original path, including the - // go command when dealing with modules. - // The Go stdlib has a special feature where if the cwd and the PWD are the - // same node then it trusts the PWD, so by setting it in the env for the child - // process we fix up all the paths returned by the go command. - cmd.Env = append(append([]string{}, cfg.Env...), "PWD="+cfg.Dir) - cmd.Dir = cfg.Dir - cmd.Stdout = stdout - cmd.Stderr = stderr - defer func(start time.Time) { - cfg.Logf("%s for %v, stderr: <<%s>> stdout: <<%s>>\n", time.Since(start), cmdDebugStr(cmd, args...), stderr, stdout) - }(time.Now()) - - if err := cmd.Run(); err != nil { +func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer, error) { + cfg := state.cfg + + inv := state.cfgInvocation() + + // For Go versions 1.16 and above, `go list` accepts overlays directly via + // the -overlay flag. Set it, if it's available. + // + // The check for "list" is not necessarily required, but we should avoid + // getting the go version if possible. + if verb == "list" { + goVersion, err := state.getGoVersion() + if err != nil { + return nil, err + } + if goVersion >= 16 { + filename, cleanup, err := state.writeOverlays() + if err != nil { + return nil, err + } + defer cleanup() + inv.Overlay = filename + } + } + inv.Verb = verb + inv.Args = args + gocmdRunner := cfg.gocmdRunner + if gocmdRunner == nil { + gocmdRunner = &gocommand.Runner{} + } + stdout, stderr, friendlyErr, err := gocmdRunner.RunRaw(cfg.Context, inv) + if err != nil { // Check for 'go' executable not being found. if ee, ok := err.(*exec.Error); ok && ee.Err == exec.ErrNotFound { return nil, fmt.Errorf("'go list' driver requires 'go', but %s", exec.ErrNotFound) @@ -991,7 +953,7 @@ func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) { if !ok { // Catastrophic error: // - context cancellation - return nil, fmt.Errorf("couldn't exec 'go %v': %s %T", args, err, err) + return nil, fmt.Errorf("couldn't run 'go': %w", err) } // Old go version? @@ -1001,7 +963,7 @@ func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) { // Related to #24854 if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "unexpected directory layout") { - return nil, fmt.Errorf("%s", stderr.String()) + return nil, friendlyErr } // Is there an error running the C compiler in cgo? This will be reported in the "Error" field @@ -1017,8 +979,18 @@ func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) { return unicode.IsOneOf([]*unicode.RangeTable{unicode.L, unicode.M, unicode.N, unicode.P, unicode.S}, r) && !strings.ContainsRune("!\"#$%&'()*,:;<=>?[\\]^`{|}\uFFFD", r) } + // golang/go#36770: Handle case where cmd/go prints module download messages before the error. + msg := stderr.String() + for strings.HasPrefix(msg, "go: downloading") { + msg = msg[strings.IndexRune(msg, '\n')+1:] + } if len(stderr.String()) > 0 && strings.HasPrefix(stderr.String(), "# ") { - if strings.HasPrefix(strings.TrimLeftFunc(stderr.String()[len("# "):], isPkgPathRune), "\n") { + msg := msg[len("# "):] + if strings.HasPrefix(strings.TrimLeftFunc(msg, isPkgPathRune), "\n") { + return stdout, nil + } + // Treat pkg-config errors as a special case (golang.org/issue/36770). + if strings.HasPrefix(msg, "pkg-config") { return stdout, nil } } @@ -1066,7 +1038,14 @@ func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) { // TODO(matloob): command-line-arguments isn't correct here. "command-line-arguments", strings.Trim(stderr.String(), "\n")) return bytes.NewBufferString(output), nil + } + // Another variation of the previous error + if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "outside module root") { + output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`, + // TODO(matloob): command-line-arguments isn't correct here. + "command-line-arguments", strings.Trim(stderr.String(), "\n")) + return bytes.NewBufferString(output), nil } // Workaround for an instance of golang.org/issue/26755: go list -e will return a non-zero exit @@ -1097,20 +1076,71 @@ func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) { // TODO(matloob): Remove these once we can depend on go list to exit with a zero status with -e even when // packages don't exist or a build fails. if !usesExportData(cfg) && !containsGoFile(args) { - return nil, fmt.Errorf("go %v: %s: %s", args, exitErr, stderr) + return nil, friendlyErr } } + return stdout, nil +} + +// OverlayJSON is the format overlay files are expected to be in. +// The Replace map maps from overlaid paths to replacement paths: +// the Go command will forward all reads trying to open +// each overlaid path to its replacement path, or consider the overlaid +// path not to exist if the replacement path is empty. +// +// From golang/go#39958. +type OverlayJSON struct { + Replace map[string]string `json:"replace,omitempty"` +} - // As of writing, go list -export prints some non-fatal compilation - // errors to stderr, even with -e set. We would prefer that it put - // them in the Package.Error JSON (see https://golang.org/issue/26319). - // In the meantime, there's nowhere good to put them, but they can - // be useful for debugging. Print them if $GOPACKAGESPRINTGOLISTERRORS - // is set. - if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTGOLISTERRORS") != "" { - fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(cmd, args...), stderr) +// writeOverlays writes out files for go list's -overlay flag, as described +// above. +func (state *golistState) writeOverlays() (filename string, cleanup func(), err error) { + // Do nothing if there are no overlays in the config. + if len(state.cfg.Overlay) == 0 { + return "", func() {}, nil } - return stdout, nil + dir, err := ioutil.TempDir("", "gopackages-*") + if err != nil { + return "", nil, err + } + // The caller must clean up this directory, unless this function returns an + // error. + cleanup = func() { + os.RemoveAll(dir) + } + defer func() { + if err != nil { + cleanup() + } + }() + overlays := map[string]string{} + for k, v := range state.cfg.Overlay { + // Create a unique filename for the overlaid files, to avoid + // creating nested directories. + noSeparator := strings.Join(strings.Split(filepath.ToSlash(k), "/"), "") + f, err := ioutil.TempFile(dir, fmt.Sprintf("*-%s", noSeparator)) + if err != nil { + return "", func() {}, err + } + if _, err := f.Write(v); err != nil { + return "", func() {}, err + } + if err := f.Close(); err != nil { + return "", func() {}, err + } + overlays[k] = f.Name() + } + b, err := json.Marshal(OverlayJSON{Replace: overlays}) + if err != nil { + return "", func() {}, err + } + // Write out the overlay file that contains the filepath mappings. + filename = filepath.Join(dir, "overlay.json") + if err := ioutil.WriteFile(filename, b, 0665); err != nil { + return "", func() {}, err + } + return filename, cleanup, nil } func containsGoFile(s []string) bool { @@ -1122,17 +1152,22 @@ func containsGoFile(s []string) bool { return false } -func cmdDebugStr(cmd *exec.Cmd, args ...string) string { +func cmdDebugStr(cmd *exec.Cmd) string { env := make(map[string]string) for _, kv := range cmd.Env { - split := strings.Split(kv, "=") + split := strings.SplitN(kv, "=", 2) k, v := split[0], split[1] env[k] = v } - var quotedArgs []string - for _, arg := range args { - quotedArgs = append(quotedArgs, strconv.Quote(arg)) - } - return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v PWD=%v go %s", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["PWD"], strings.Join(quotedArgs, " ")) + var args []string + for _, arg := range cmd.Args { + quoted := strconv.Quote(arg) + if quoted[1:len(quoted)-1] != arg || strings.Contains(arg, " ") { + args = append(args, quoted) + } else { + args = append(args, arg) + } + } + return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], strings.Join(args, " ")) } diff --git a/vendor/golang.org/x/tools/go/packages/golist_overlay.go b/vendor/golang.org/x/tools/go/packages/golist_overlay.go index a7de622..9576b47 100644 --- a/vendor/golang.org/x/tools/go/packages/golist_overlay.go +++ b/vendor/golang.org/x/tools/go/packages/golist_overlay.go @@ -1,14 +1,22 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package packages import ( - "bytes" "encoding/json" "fmt" "go/parser" "go/token" + "os" "path/filepath" + "regexp" + "sort" "strconv" "strings" + + "golang.org/x/tools/internal/gocommand" ) // processGolistOverlay provides rudimentary support for adding @@ -16,15 +24,23 @@ import ( // sometimes incorrect. // TODO(matloob): Handle unsupported cases, including the following: // - determining the correct package to add given a new import path -func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func() *goInfo) (modifiedPkgs, needPkgs []string, err error) { +func (state *golistState) processGolistOverlay(response *responseDeduper) (modifiedPkgs, needPkgs []string, err error) { havePkgs := make(map[string]string) // importPath -> non-test package ID needPkgsSet := make(map[string]bool) modifiedPkgsSet := make(map[string]bool) + pkgOfDir := make(map[string][]*Package) for _, pkg := range response.dr.Packages { // This is an approximation of import path to id. This can be // wrong for tests, vendored packages, and a number of other cases. havePkgs[pkg.PkgPath] = pkg.ID + dir, err := commonDir(pkg.GoFiles) + if err != nil { + return nil, nil, err + } + if dir != "" { + pkgOfDir[dir] = append(pkgOfDir[dir], pkg) + } } // If no new imports are added, it is safe to avoid loading any needPkgs. @@ -34,7 +50,23 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func( // potentially modifying the transitive set of dependencies). var overlayAddsImports bool - for opath, contents := range cfg.Overlay { + // If both a package and its test package are created by the overlay, we + // need the real package first. Process all non-test files before test + // files, and make the whole process deterministic while we're at it. + var overlayFiles []string + for opath := range state.cfg.Overlay { + overlayFiles = append(overlayFiles, opath) + } + sort.Slice(overlayFiles, func(i, j int) bool { + iTest := strings.HasSuffix(overlayFiles[i], "_test.go") + jTest := strings.HasSuffix(overlayFiles[j], "_test.go") + if iTest != jTest { + return !iTest // non-tests are before tests. + } + return overlayFiles[i] < overlayFiles[j] + }) + for _, opath := range overlayFiles { + contents := state.cfg.Overlay[opath] base := filepath.Base(opath) dir := filepath.Dir(opath) var pkg *Package // if opath belongs to both a package and its test variant, this will be the test variant @@ -47,6 +79,9 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func( // to the overlay. continue } + // If all the overlay files belong to a different package, change the + // package name to that package. + maybeFixPackageName(pkgName, isTestFile, pkgOfDir[dir]) nextPackage: for _, p := range response.dr.Packages { if pkgName != p.Name && p.ID != "command-line-arguments" { @@ -63,15 +98,19 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func( // because the file is generated in another directory. testVariantOf = p continue nextPackage + } else if !isTestFile && hasTestFiles(p) { + // We're examining a test variant, but the overlaid file is + // a non-test file. Because the overlay implementation + // (currently) only adds a file to one package, skip this + // package, so that we can add the file to the production + // variant of the package. (https://golang.org/issue/36857 + // tracks handling overlays on both the production and test + // variant of a package). + continue nextPackage } if pkg != nil && p != pkg && pkg.PkgPath == p.PkgPath { - // If we've already seen the test variant, - // make sure to label which package it is a test variant of. - if hasTestFiles(pkg) { - testVariantOf = p - continue nextPackage - } - // If we have already seen the package of which this is a test variant. + // We have already seen the production version of the + // for which p is a test variant. if hasTestFiles(p) { testVariantOf = pkg } @@ -82,38 +121,68 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func( } } } - // The overlay could have included an entirely new package. - if pkg == nil { + // The overlay could have included an entirely new package or an + // ad-hoc package. An ad-hoc package is one that we have manually + // constructed from inadequate `go list` results for a file= query. + // It will have the ID command-line-arguments. + if pkg == nil || pkg.ID == "command-line-arguments" { // Try to find the module or gopath dir the file is contained in. // Then for modules, add the module opath to the beginning. - pkgPath, ok := getPkgPath(cfg, dir, rootDirs) + pkgPath, ok, err := state.getPkgPath(dir) + if err != nil { + return nil, nil, err + } if !ok { break } + var forTest string // only set for x tests isXTest := strings.HasSuffix(pkgName, "_test") if isXTest { + forTest = pkgPath pkgPath += "_test" } id := pkgPath - if isTestFile && !isXTest { - id = fmt.Sprintf("%s [%s.test]", pkgPath, pkgPath) - } - // Try to reclaim a package with the same id if it exists in the response. - for _, p := range response.dr.Packages { - if reclaimPackage(p, id, opath, contents) { - pkg = p - break + if isTestFile { + if isXTest { + id = fmt.Sprintf("%s [%s.test]", pkgPath, forTest) + } else { + id = fmt.Sprintf("%s [%s.test]", pkgPath, pkgPath) } } - // Otherwise, create a new package - if pkg == nil { - pkg = &Package{PkgPath: pkgPath, ID: id, Name: pkgName, Imports: make(map[string]*Package)} - response.addPackage(pkg) - havePkgs[pkg.PkgPath] = id - // Add the production package's sources for a test variant. - if isTestFile && !isXTest && testVariantOf != nil { - pkg.GoFiles = append(pkg.GoFiles, testVariantOf.GoFiles...) - pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, testVariantOf.CompiledGoFiles...) + if pkg != nil { + // TODO(rstambler): We should change the package's path and ID + // here. The only issue is that this messes with the roots. + } else { + // Try to reclaim a package with the same ID, if it exists in the response. + for _, p := range response.dr.Packages { + if reclaimPackage(p, id, opath, contents) { + pkg = p + break + } + } + // Otherwise, create a new package. + if pkg == nil { + pkg = &Package{ + PkgPath: pkgPath, + ID: id, + Name: pkgName, + Imports: make(map[string]*Package), + } + response.addPackage(pkg) + havePkgs[pkg.PkgPath] = id + // Add the production package's sources for a test variant. + if isTestFile && !isXTest && testVariantOf != nil { + pkg.GoFiles = append(pkg.GoFiles, testVariantOf.GoFiles...) + pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, testVariantOf.CompiledGoFiles...) + // Add the package under test and its imports to the test variant. + pkg.forTest = testVariantOf.PkgPath + for k, v := range testVariantOf.Imports { + pkg.Imports[k] = &Package{ID: v.ID} + } + } + if isXTest { + pkg.forTest = forTest + } } } } @@ -130,42 +199,47 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func( continue } for _, imp := range imports { - _, found := pkg.Imports[imp] - if !found { - overlayAddsImports = true - // TODO(matloob): Handle cases when the following block isn't correct. - // These include imports of vendored packages, etc. - id, ok := havePkgs[imp] - if !ok { - id = imp - } - pkg.Imports[imp] = &Package{ID: id} - // Add dependencies to the non-test variant version of this package as wel. - if testVariantOf != nil { - testVariantOf.Imports[imp] = &Package{ID: id} + // TODO(rstambler): If the package is an x test and the import has + // a test variant, make sure to replace it. + if _, found := pkg.Imports[imp]; found { + continue + } + overlayAddsImports = true + id, ok := havePkgs[imp] + if !ok { + var err error + id, err = state.resolveImport(dir, imp) + if err != nil { + return nil, nil, err } } + pkg.Imports[imp] = &Package{ID: id} + // Add dependencies to the non-test variant version of this package as well. + if testVariantOf != nil { + testVariantOf.Imports[imp] = &Package{ID: id} + } } - continue } - // toPkgPath tries to guess the package path given the id. - // This isn't always correct -- it's certainly wrong for - // vendored packages' paths. - toPkgPath := func(id string) string { - // TODO(matloob): Handle vendor paths. - i := strings.IndexByte(id, ' ') - if i >= 0 { - return id[:i] + // toPkgPath guesses the package path given the id. + toPkgPath := func(sourceDir, id string) (string, error) { + if i := strings.IndexByte(id, ' '); i >= 0 { + return state.resolveImport(sourceDir, id[:i]) } - return id + return state.resolveImport(sourceDir, id) } - // Do another pass now that new packages have been created to determine the - // set of missing packages. + // Now that new packages have been created, do another pass to determine + // the new set of missing packages. for _, pkg := range response.dr.Packages { for _, imp := range pkg.Imports { - pkgPath := toPkgPath(imp.ID) + if len(pkg.GoFiles) == 0 { + return nil, nil, fmt.Errorf("cannot resolve imports for package %q with no Go files", pkg.PkgPath) + } + pkgPath, err := toPkgPath(filepath.Dir(pkg.GoFiles[0]), imp.ID) + if err != nil { + return nil, nil, err + } if _, ok := havePkgs[pkgPath]; !ok { needPkgsSet[pkgPath] = true } @@ -185,6 +259,52 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func( return modifiedPkgs, needPkgs, err } +// resolveImport finds the ID of a package given its import path. +// In particular, it will find the right vendored copy when in GOPATH mode. +func (state *golistState) resolveImport(sourceDir, importPath string) (string, error) { + env, err := state.getEnv() + if err != nil { + return "", err + } + if env["GOMOD"] != "" { + return importPath, nil + } + + searchDir := sourceDir + for { + vendorDir := filepath.Join(searchDir, "vendor") + exists, ok := state.vendorDirs[vendorDir] + if !ok { + info, err := os.Stat(vendorDir) + exists = err == nil && info.IsDir() + state.vendorDirs[vendorDir] = exists + } + + if exists { + vendoredPath := filepath.Join(vendorDir, importPath) + if info, err := os.Stat(vendoredPath); err == nil && info.IsDir() { + // We should probably check for .go files here, but shame on anyone who fools us. + path, ok, err := state.getPkgPath(vendoredPath) + if err != nil { + return "", err + } + if ok { + return path, nil + } + } + } + + // We know we've hit the top of the filesystem when we Dir / and get /, + // or C:\ and get C:\, etc. + next := filepath.Dir(searchDir) + if next == searchDir { + break + } + searchDir = next + } + return importPath, nil +} + func hasTestFiles(p *Package) bool { for _, f := range p.GoFiles { if strings.HasSuffix(f, "_test.go") { @@ -194,44 +314,75 @@ func hasTestFiles(p *Package) bool { return false } -// determineRootDirs returns a mapping from directories code can be contained in to the -// corresponding import path prefixes of those directories. -// Its result is used to try to determine the import path for a package containing -// an overlay file. -func determineRootDirs(cfg *Config) map[string]string { - // Assume modules first: - out, err := invokeGo(cfg, "list", "-m", "-json", "all") +// determineRootDirs returns a mapping from absolute directories that could +// contain code to their corresponding import path prefixes. +func (state *golistState) determineRootDirs() (map[string]string, error) { + env, err := state.getEnv() if err != nil { - return determineRootDirsGOPATH(cfg) + return nil, err } - m := map[string]string{} - type jsonMod struct{ Path, Dir string } + if env["GOMOD"] != "" { + state.rootsOnce.Do(func() { + state.rootDirs, state.rootDirsError = state.determineRootDirsModules() + }) + } else { + state.rootsOnce.Do(func() { + state.rootDirs, state.rootDirsError = state.determineRootDirsGOPATH() + }) + } + return state.rootDirs, state.rootDirsError +} + +func (state *golistState) determineRootDirsModules() (map[string]string, error) { + // List all of the modules--the first will be the directory for the main + // module. Any replaced modules will also need to be treated as roots. + // Editing files in the module cache isn't a great idea, so we don't + // plan to ever support that. + out, err := state.invokeGo("list", "-m", "-json", "all") + if err != nil { + // 'go list all' will fail if we're outside of a module and + // GO111MODULE=on. Try falling back without 'all'. + var innerErr error + out, innerErr = state.invokeGo("list", "-m", "-json") + if innerErr != nil { + return nil, err + } + } + roots := map[string]string{} + modules := map[string]string{} + var i int for dec := json.NewDecoder(out); dec.More(); { - mod := new(jsonMod) + mod := new(gocommand.ModuleJSON) if err := dec.Decode(mod); err != nil { - return m // Give up and return an empty map. Package won't be found for overlay. + return nil, err } if mod.Dir != "" && mod.Path != "" { // This is a valid module; add it to the map. - m[mod.Dir] = mod.Path + absDir, err := filepath.Abs(mod.Dir) + if err != nil { + return nil, err + } + modules[absDir] = mod.Path + // The first result is the main module. + if i == 0 || mod.Replace != nil && mod.Replace.Path != "" { + roots[absDir] = mod.Path + } } + i++ } - return m + return roots, nil } -func determineRootDirsGOPATH(cfg *Config) map[string]string { +func (state *golistState) determineRootDirsGOPATH() (map[string]string, error) { m := map[string]string{} - out, err := invokeGo(cfg, "env", "GOPATH") - if err != nil { - // Could not determine root dir mapping. Everything is best-effort, so just return an empty map. - // When we try to find the import path for a directory, there will be no root-dir match and - // we'll give up. - return m - } - for _, p := range filepath.SplitList(string(bytes.TrimSpace(out.Bytes()))) { - m[filepath.Join(p, "src")] = "" + for _, dir := range filepath.SplitList(state.mustGetEnv()["GOPATH"]) { + absDir, err := filepath.Abs(dir) + if err != nil { + return nil, err + } + m[filepath.Join(absDir, "src")] = "" } - return m + return m, nil } func extractImports(filename string, contents []byte) ([]string, error) { @@ -291,3 +442,134 @@ func extractPackageName(filename string, contents []byte) (string, bool) { } return f.Name.Name, true } + +// commonDir returns the directory that all files are in, "" if files is empty, +// or an error if they aren't in the same directory. +func commonDir(files []string) (string, error) { + seen := make(map[string]bool) + for _, f := range files { + seen[filepath.Dir(f)] = true + } + if len(seen) > 1 { + return "", fmt.Errorf("files (%v) are in more than one directory: %v", files, seen) + } + for k := range seen { + // seen has only one element; return it. + return k, nil + } + return "", nil // no files +} + +// It is possible that the files in the disk directory dir have a different package +// name from newName, which is deduced from the overlays. If they all have a different +// package name, and they all have the same package name, then that name becomes +// the package name. +// It returns true if it changes the package name, false otherwise. +func maybeFixPackageName(newName string, isTestFile bool, pkgsOfDir []*Package) { + names := make(map[string]int) + for _, p := range pkgsOfDir { + names[p.Name]++ + } + if len(names) != 1 { + // some files are in different packages + return + } + var oldName string + for k := range names { + oldName = k + } + if newName == oldName { + return + } + // We might have a case where all of the package names in the directory are + // the same, but the overlay file is for an x test, which belongs to its + // own package. If the x test does not yet exist on disk, we may not yet + // have its package name on disk, but we should not rename the packages. + // + // We use a heuristic to determine if this file belongs to an x test: + // The test file should have a package name whose package name has a _test + // suffix or looks like "newName_test". + maybeXTest := strings.HasPrefix(oldName+"_test", newName) || strings.HasSuffix(newName, "_test") + if isTestFile && maybeXTest { + return + } + for _, p := range pkgsOfDir { + p.Name = newName + } +} + +// This function is copy-pasted from +// https://github.com/golang/go/blob/9706f510a5e2754595d716bd64be8375997311fb/src/cmd/go/internal/search/search.go#L360. +// It should be deleted when we remove support for overlays from go/packages. +// +// NOTE: This does not handle any ./... or ./ style queries, as this function +// doesn't know the working directory. +// +// matchPattern(pattern)(name) reports whether +// name matches pattern. Pattern is a limited glob +// pattern in which '...' means 'any string' and there +// is no other special syntax. +// Unfortunately, there are two special cases. Quoting "go help packages": +// +// First, /... at the end of the pattern can match an empty string, +// so that net/... matches both net and packages in its subdirectories, like net/http. +// Second, any slash-separated pattern element containing a wildcard never +// participates in a match of the "vendor" element in the path of a vendored +// package, so that ./... does not match packages in subdirectories of +// ./vendor or ./mycode/vendor, but ./vendor/... and ./mycode/vendor/... do. +// Note, however, that a directory named vendor that itself contains code +// is not a vendored package: cmd/vendor would be a command named vendor, +// and the pattern cmd/... matches it. +func matchPattern(pattern string) func(name string) bool { + // Convert pattern to regular expression. + // The strategy for the trailing /... is to nest it in an explicit ? expression. + // The strategy for the vendor exclusion is to change the unmatchable + // vendor strings to a disallowed code point (vendorChar) and to use + // "(anything but that codepoint)*" as the implementation of the ... wildcard. + // This is a bit complicated but the obvious alternative, + // namely a hand-written search like in most shell glob matchers, + // is too easy to make accidentally exponential. + // Using package regexp guarantees linear-time matching. + + const vendorChar = "\x00" + + if strings.Contains(pattern, vendorChar) { + return func(name string) bool { return false } + } + + re := regexp.QuoteMeta(pattern) + re = replaceVendor(re, vendorChar) + switch { + case strings.HasSuffix(re, `/`+vendorChar+`/\.\.\.`): + re = strings.TrimSuffix(re, `/`+vendorChar+`/\.\.\.`) + `(/vendor|/` + vendorChar + `/\.\.\.)` + case re == vendorChar+`/\.\.\.`: + re = `(/vendor|/` + vendorChar + `/\.\.\.)` + case strings.HasSuffix(re, `/\.\.\.`): + re = strings.TrimSuffix(re, `/\.\.\.`) + `(/\.\.\.)?` + } + re = strings.ReplaceAll(re, `\.\.\.`, `[^`+vendorChar+`]*`) + + reg := regexp.MustCompile(`^` + re + `$`) + + return func(name string) bool { + if strings.Contains(name, vendorChar) { + return false + } + return reg.MatchString(replaceVendor(name, vendorChar)) + } +} + +// replaceVendor returns the result of replacing +// non-trailing vendor path elements in x with repl. +func replaceVendor(x, repl string) string { + if !strings.Contains(x, "vendor") { + return x + } + elem := strings.Split(x, "/") + for i := 0; i < len(elem)-1; i++ { + if elem[i] == "vendor" { + elem[i] = repl + } + } + return strings.Join(elem, "/") +} diff --git a/vendor/golang.org/x/tools/go/packages/loadmode_string.go b/vendor/golang.org/x/tools/go/packages/loadmode_string.go new file mode 100644 index 0000000..5c080d2 --- /dev/null +++ b/vendor/golang.org/x/tools/go/packages/loadmode_string.go @@ -0,0 +1,57 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packages + +import ( + "fmt" + "strings" +) + +var allModes = []LoadMode{ + NeedName, + NeedFiles, + NeedCompiledGoFiles, + NeedImports, + NeedDeps, + NeedExportFile, + NeedTypes, + NeedSyntax, + NeedTypesInfo, + NeedTypesSizes, +} + +var modeStrings = []string{ + "NeedName", + "NeedFiles", + "NeedCompiledGoFiles", + "NeedImports", + "NeedDeps", + "NeedExportFile", + "NeedTypes", + "NeedSyntax", + "NeedTypesInfo", + "NeedTypesSizes", +} + +func (mod LoadMode) String() string { + m := mod + if m == 0 { + return "LoadMode(0)" + } + var out []string + for i, x := range allModes { + if x > m { + break + } + if (m & x) != 0 { + out = append(out, modeStrings[i]) + m = m ^ x + } + } + if m != 0 { + out = append(out, "Unknown") + } + return fmt.Sprintf("LoadMode(%s)", strings.Join(out, "|")) +} diff --git a/vendor/golang.org/x/tools/go/packages/packages.go b/vendor/golang.org/x/tools/go/packages/packages.go index b29c913..a93dc6a 100644 --- a/vendor/golang.org/x/tools/go/packages/packages.go +++ b/vendor/golang.org/x/tools/go/packages/packages.go @@ -21,8 +21,13 @@ import ( "path/filepath" "strings" "sync" + "time" "golang.org/x/tools/go/gcexportdata" + "golang.org/x/tools/internal/gocommand" + "golang.org/x/tools/internal/packagesinternal" + "golang.org/x/tools/internal/typeparams" + "golang.org/x/tools/internal/typesinternal" ) // A LoadMode controls the amount of detail to return when loading. @@ -51,8 +56,8 @@ const ( // NeedDeps adds the fields requested by the LoadMode in the packages in Imports. NeedDeps - // NeedExportsFile adds ExportsFile. - NeedExportsFile + // NeedExportFile adds ExportFile. + NeedExportFile // NeedTypes adds Types, Fset, and IllTyped. NeedTypes @@ -65,6 +70,26 @@ const ( // NeedTypesSizes adds TypesSizes. NeedTypesSizes + + // needInternalDepsErrors adds the internal deps errors field for use by gopls. + needInternalDepsErrors + + // needInternalForTest adds the internal forTest field. + // Tests must also be set on the context for this field to be populated. + needInternalForTest + + // typecheckCgo enables full support for type checking cgo. Requires Go 1.15+. + // Modifies CompiledGoFiles and Types, and has no effect on its own. + typecheckCgo + + // NeedModule adds Module. + NeedModule + + // NeedEmbedFiles adds EmbedFiles. + NeedEmbedFiles + + // NeedEmbedPatterns adds EmbedPatterns. + NeedEmbedPatterns ) const ( @@ -87,6 +112,9 @@ const ( // Deprecated: LoadAllSyntax exists for historical compatibility // and should not be used. Please directly specify the needed fields using the Need values. LoadAllSyntax = LoadSyntax | NeedDeps + + // Deprecated: NeedExportsFile is a historical misspelling of NeedExportFile. + NeedExportsFile = NeedExportFile ) // A Config specifies details about how packages should be loaded. @@ -123,10 +151,19 @@ type Config struct { // Env []string + // gocmdRunner guards go command calls from concurrency errors. + gocmdRunner *gocommand.Runner + // BuildFlags is a list of command-line flags to be passed through to // the build system's query tool. BuildFlags []string + // modFile will be used for -modfile in go command invocations. + modFile string + + // modFlag will be used for -modfile in go command invocations. + modFlag string + // Fset provides source position information for syntax trees and types. // If Fset is nil, Load will use a new fileset, but preserve Fset's value. Fset *token.FileSet @@ -160,7 +197,7 @@ type Config struct { Tests bool // Overlay provides a mapping of absolute file paths to file contents. - // If the file with the given path already exists, the parser will use the + // If the file with the given path already exists, the parser will use the // alternative file contents provided by the map. // // Overlays provide incomplete support for when a given file doesn't @@ -174,6 +211,13 @@ type driver func(cfg *Config, patterns ...string) (*driverResponse, error) // driverResponse contains the results for a driver query. type driverResponse struct { + // NotHandled is returned if the request can't be handled by the current + // driver. If an external driver returns a response with NotHandled, the + // rest of the driverResponse is ignored, and go/packages will fallback + // to the next driver. If go/packages is extended in the future to support + // lists of multiple drivers, go/packages will fall back to the next driver. + NotHandled bool + // Sizes, if not nil, is the types.Sizes to use when type checking. Sizes *types.StdSizes @@ -215,14 +259,22 @@ func Load(cfg *Config, patterns ...string) ([]*Package, error) { return l.refine(response.Roots, response.Packages...) } -// defaultDriver is a driver that looks for an external driver binary, and if -// it does not find it falls back to the built in go list driver. +// defaultDriver is a driver that implements go/packages' fallback behavior. +// It will try to request to an external driver, if one exists. If there's +// no external driver, or the driver returns a response with NotHandled set, +// defaultDriver will fall back to the go list driver. func defaultDriver(cfg *Config, patterns ...string) (*driverResponse, error) { driver := findExternalDriver(cfg) if driver == nil { driver = goListDriver } - return driver(cfg, patterns...) + response, err := driver(cfg, patterns...) + if err != nil { + return response, err + } else if response.NotHandled { + return goListDriver(cfg, patterns...) + } + return response, nil } // A Package describes a loaded Go package. @@ -249,7 +301,7 @@ type Package struct { GoFiles []string // CompiledGoFiles lists the absolute file paths of the package's source - // files that were presented to the compiler. + // files that are suitable for type checking. // This may differ from GoFiles if files are processed before compilation. CompiledGoFiles []string @@ -257,6 +309,19 @@ type Package struct { // including assembly, C, C++, Fortran, Objective-C, SWIG, and so on. OtherFiles []string + // EmbedFiles lists the absolute file paths of the package's files + // embedded with go:embed. + EmbedFiles []string + + // EmbedPatterns lists the absolute file patterns of the package's + // files embedded with go:embed. + EmbedPatterns []string + + // IgnoredFiles lists source files that are not part of the package + // using the current build configuration but that might be part of + // the package using other build configurations. + IgnoredFiles []string + // ExportFile is the absolute path to a file containing type // information for the package as provided by the build system. ExportFile string @@ -284,6 +349,9 @@ type Package struct { // The NeedSyntax LoadMode bit populates this field for packages matching the patterns. // If NeedDeps and NeedImports are also set, this field will also be populated // for dependencies. + // + // Syntax is kept in the same order as CompiledGoFiles, with the caveat that nils are + // removed. If parsing returned nil, Syntax may be shorter than CompiledGoFiles. Syntax []*ast.File // TypesInfo provides type information about the package's syntax trees. @@ -292,6 +360,58 @@ type Package struct { // TypesSizes provides the effective size function for types in TypesInfo. TypesSizes types.Sizes + + // forTest is the package under test, if any. + forTest string + + // depsErrors is the DepsErrors field from the go list response, if any. + depsErrors []*packagesinternal.PackageError + + // module is the module information for the package if it exists. + Module *Module +} + +// Module provides module information for a package. +type Module struct { + Path string // module path + Version string // module version + Replace *Module // replaced by this module + Time *time.Time // time version was created + Main bool // is this the main module? + Indirect bool // is this module only an indirect dependency of main module? + Dir string // directory holding files for this module, if any + GoMod string // path to go.mod file used when loading this module, if any + GoVersion string // go version used in module + Error *ModuleError // error loading module +} + +// ModuleError holds errors loading a module. +type ModuleError struct { + Err string // the error itself +} + +func init() { + packagesinternal.GetForTest = func(p interface{}) string { + return p.(*Package).forTest + } + packagesinternal.GetDepsErrors = func(p interface{}) []*packagesinternal.PackageError { + return p.(*Package).depsErrors + } + packagesinternal.GetGoCmdRunner = func(config interface{}) *gocommand.Runner { + return config.(*Config).gocmdRunner + } + packagesinternal.SetGoCmdRunner = func(config interface{}, runner *gocommand.Runner) { + config.(*Config).gocmdRunner = runner + } + packagesinternal.SetModFile = func(config interface{}, value string) { + config.(*Config).modFile = value + } + packagesinternal.SetModFlag = func(config interface{}, value string) { + config.(*Config).modFlag = value + } + packagesinternal.TypecheckCgo = int(typecheckCgo) + packagesinternal.DepsErrors = int(needInternalDepsErrors) + packagesinternal.ForTest = int(needInternalForTest) } // An Error describes a problem with a package's metadata, syntax, or types. @@ -334,6 +454,9 @@ type flatPackage struct { GoFiles []string `json:",omitempty"` CompiledGoFiles []string `json:",omitempty"` OtherFiles []string `json:",omitempty"` + EmbedFiles []string `json:",omitempty"` + EmbedPatterns []string `json:",omitempty"` + IgnoredFiles []string `json:",omitempty"` ExportFile string `json:",omitempty"` Imports map[string]string `json:",omitempty"` } @@ -356,6 +479,9 @@ func (p *Package) MarshalJSON() ([]byte, error) { GoFiles: p.GoFiles, CompiledGoFiles: p.CompiledGoFiles, OtherFiles: p.OtherFiles, + EmbedFiles: p.EmbedFiles, + EmbedPatterns: p.EmbedPatterns, + IgnoredFiles: p.IgnoredFiles, ExportFile: p.ExportFile, } if len(p.Imports) > 0 { @@ -382,6 +508,8 @@ func (p *Package) UnmarshalJSON(b []byte) error { GoFiles: flat.GoFiles, CompiledGoFiles: flat.CompiledGoFiles, OtherFiles: flat.OtherFiles, + EmbedFiles: flat.EmbedFiles, + EmbedPatterns: flat.EmbedPatterns, ExportFile: flat.ExportFile, } if len(flat.Imports) > 0 { @@ -454,6 +582,9 @@ func newLoader(cfg *Config) *loader { if ld.Config.Env == nil { ld.Config.Env = os.Environ() } + if ld.Config.gocmdRunner == nil { + ld.Config.gocmdRunner = &gocommand.Runner{} + } if ld.Context == nil { ld.Context = context.Background() } @@ -467,7 +598,7 @@ func newLoader(cfg *Config) *loader { ld.requestedMode = ld.Mode ld.Mode = impliedLoadMode(ld.Mode) - if ld.Mode&NeedTypes != 0 { + if ld.Mode&NeedTypes != 0 || ld.Mode&NeedSyntax != 0 { if ld.Fset == nil { ld.Fset = token.NewFileSet() } @@ -500,12 +631,23 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { if i, found := rootMap[pkg.ID]; found { rootIndex = i } + + // Overlays can invalidate export data. + // TODO(matloob): make this check fine-grained based on dependencies on overlaid files + exportDataInvalid := len(ld.Overlay) > 0 || pkg.ExportFile == "" && pkg.PkgPath != "unsafe" + // This package needs type information if the caller requested types and the package is + // either a root, or it's a non-root and the user requested dependencies ... + needtypes := (ld.Mode&NeedTypes|NeedTypesInfo != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0)) + // This package needs source if the call requested source (or types info, which implies source) + // and the package is either a root, or itas a non- root and the user requested dependencies... + needsrc := ((ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0)) || + // ... or if we need types and the exportData is invalid. We fall back to (incompletely) + // typechecking packages from source if they fail to compile. + (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && exportDataInvalid)) && pkg.PkgPath != "unsafe" lpkg := &loaderPackage{ Package: pkg, - needtypes: (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0, - needsrc: (ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0 || - len(ld.Overlay) > 0 || // Overlays can invalidate export data. TODO(matloob): make this check fine-grained based on dependencies on overlaid files - pkg.ExportFile == "" && pkg.PkgPath != "unsafe", + needtypes: needtypes, + needsrc: needsrc, } ld.pkgs[lpkg.ID] = lpkg if rootIndex >= 0 { @@ -609,9 +751,9 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { } } } - // Load type data if needed, starting at + // Load type data and syntax if needed, starting at // the initial packages (roots of the import DAG). - if ld.Mode&NeedTypes != 0 { + if ld.Mode&NeedTypes != 0 || ld.Mode&NeedSyntax != 0 { var wg sync.WaitGroup for _, lpkg := range initial { wg.Add(1) @@ -628,7 +770,8 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { result[i] = lpkg.Package } for i := range ld.pkgs { - // Clear all unrequested fields, for extra de-Hyrum-ization. + // Clear all unrequested fields, + // to catch programs that use more than they request. if ld.requestedMode&NeedName == 0 { ld.pkgs[i].Name = "" ld.pkgs[i].PkgPath = "" @@ -636,6 +779,13 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { if ld.requestedMode&NeedFiles == 0 { ld.pkgs[i].GoFiles = nil ld.pkgs[i].OtherFiles = nil + ld.pkgs[i].IgnoredFiles = nil + } + if ld.requestedMode&NeedEmbedFiles == 0 { + ld.pkgs[i].EmbedFiles = nil + } + if ld.requestedMode&NeedEmbedPatterns == 0 { + ld.pkgs[i].EmbedPatterns = nil } if ld.requestedMode&NeedCompiledGoFiles == 0 { ld.pkgs[i].CompiledGoFiles = nil @@ -643,7 +793,7 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { if ld.requestedMode&NeedImports == 0 { ld.pkgs[i].Imports = nil } - if ld.requestedMode&NeedExportsFile == 0 { + if ld.requestedMode&NeedExportFile == 0 { ld.pkgs[i].ExportFile = "" } if ld.requestedMode&NeedTypes == 0 { @@ -660,6 +810,9 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) { if ld.requestedMode&NeedTypesSizes == 0 { ld.pkgs[i].TypesSizes = nil } + if ld.requestedMode&NeedModule == 0 { + ld.pkgs[i].Module = nil + } } return result, nil @@ -713,7 +866,7 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) { // which would then require that such created packages be explicitly // inserted back into the Import graph as a final step after export data loading. // The Diamond test exercises this case. - if !lpkg.needtypes { + if !lpkg.needtypes && !lpkg.needsrc { return } if !lpkg.needsrc { @@ -770,7 +923,7 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) { lpkg.Errors = append(lpkg.Errors, errs...) } - if len(lpkg.CompiledGoFiles) == 0 && lpkg.ExportFile != "" { + if ld.Config.Mode&NeedTypes != 0 && len(lpkg.CompiledGoFiles) == 0 && lpkg.ExportFile != "" { // The config requested loading sources and types, but sources are missing. // Add an error to the package and fall back to loading from export data. appendError(Error{"-", fmt.Sprintf("sources missing for package %s", lpkg.ID), ParseError}) @@ -784,6 +937,9 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) { } lpkg.Syntax = files + if ld.Config.Mode&NeedTypes == 0 { + return + } lpkg.TypesInfo = &types.Info{ Types: make(map[ast.Expr]types.TypeAndValue), @@ -793,6 +949,7 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) { Scopes: make(map[ast.Node]*types.Scope), Selections: make(map[*ast.SelectorExpr]*types.Selection), } + typeparams.InitInstanceInfo(lpkg.TypesInfo) lpkg.TypesSizes = ld.sizes importer := importerFunc(func(path string) (*types.Package, error) { @@ -832,6 +989,15 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) { Error: appendError, Sizes: ld.sizes, } + if (ld.Mode & typecheckCgo) != 0 { + if !typesinternal.SetUsesCgo(tc) { + appendError(Error{ + Msg: "typecheckCgo requires Go 1.15+", + Kind: ListError, + }) + return + } + } types.NewChecker(tc, ld.Fset, lpkg.Types, lpkg.TypesInfo).Files(lpkg.Syntax) lpkg.importErrors = nil // no longer needed @@ -922,7 +1088,6 @@ func (ld *loader) parseFile(filename string) (*ast.File, error) { // // Because files are scanned in parallel, the token.Pos // positions of the resulting ast.Files are not ordered. -// func (ld *loader) parseFiles(filenames []string) ([]*ast.File, []error) { var wg sync.WaitGroup n := len(filenames) @@ -966,7 +1131,6 @@ func (ld *loader) parseFiles(filenames []string) ([]*ast.File, []error) { // sameFile returns true if x and y have the same basename and denote // the same file. -// func sameFile(x, y string) bool { if x == y { // It could be the case that y doesn't exist. @@ -1079,8 +1243,13 @@ func (ld *loader) loadFromExportData(lpkg *loaderPackage) (*types.Package, error if err != nil { return nil, fmt.Errorf("reading %s: %v", lpkg.ExportFile, err) } + if _, ok := view["go.shape"]; ok { + // Account for the pseudopackage "go.shape" that gets + // created by generic code. + viewLen++ + } if viewLen != len(view) { - log.Fatalf("Unexpected package creation during export data loading") + log.Panicf("golang.org/x/tools/go/packages: unexpected new packages during load of %s", lpkg.PkgPath) } lpkg.Types = tpkg @@ -1091,17 +1260,8 @@ func (ld *loader) loadFromExportData(lpkg *loaderPackage) (*types.Package, error // impliedLoadMode returns loadMode with its dependencies. func impliedLoadMode(loadMode LoadMode) LoadMode { - if loadMode&NeedTypesInfo != 0 && loadMode&NeedImports == 0 { - // If NeedTypesInfo, go/packages needs to do typechecking itself so it can - // associate type info with the AST. To do so, we need the export data - // for dependencies, which means we need to ask for the direct dependencies. - // NeedImports is used to ask for the direct dependencies. - loadMode |= NeedImports - } - - if loadMode&NeedDeps != 0 && loadMode&NeedImports == 0 { - // With NeedDeps we need to load at least direct dependencies. - // NeedImports is used to ask for the direct dependencies. + if loadMode&(NeedDeps|NeedTypes|NeedTypesInfo) != 0 { + // All these things require knowing the import graph. loadMode |= NeedImports } @@ -1109,5 +1269,5 @@ func impliedLoadMode(loadMode LoadMode) LoadMode { } func usesExportData(cfg *Config) bool { - return cfg.Mode&NeedExportsFile != 0 || cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedDeps == 0 + return cfg.Mode&NeedExportFile != 0 || cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedDeps == 0 } diff --git a/vendor/golang.org/x/tools/go/packages/visit.go b/vendor/golang.org/x/tools/go/packages/visit.go index b13cb08..a1dcc40 100644 --- a/vendor/golang.org/x/tools/go/packages/visit.go +++ b/vendor/golang.org/x/tools/go/packages/visit.go @@ -1,3 +1,7 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + package packages import ( diff --git a/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go b/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go index 882e3b3..c160acb 100644 --- a/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go +++ b/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go @@ -14,8 +14,10 @@ // distinct but logically equivalent. // // A single object may have multiple paths. In this example, -// type A struct{ X int } -// type B A +// +// type A struct{ X int } +// type B A +// // the field X has two paths due to its membership of both A and B. // The For(obj) function always returns one of these paths, arbitrarily // but consistently. @@ -23,10 +25,12 @@ package objectpath import ( "fmt" + "go/types" + "sort" "strconv" "strings" - "go/types" + "golang.org/x/tools/internal/typeparams" ) // A Path is an opaque name that identifies a types.Object @@ -43,26 +47,30 @@ type Path string // The sequences represent a path through the package/object/type graph. // We classify these operators by their type: // -// PO package->object Package.Scope.Lookup -// OT object->type Object.Type -// TT type->type Type.{Elem,Key,Params,Results,Underlying} [EKPRU] -// TO type->object Type.{At,Field,Method,Obj} [AFMO] +// PO package->object Package.Scope.Lookup +// OT object->type Object.Type +// TT type->type Type.{Elem,Key,Params,Results,Underlying} [EKPRU] +// TO type->object Type.{At,Field,Method,Obj} [AFMO] // // All valid paths start with a package and end at an object // and thus may be defined by the regular language: // -// objectpath = PO (OT TT* TO)* +// objectpath = PO (OT TT* TO)* // // The concrete encoding follows directly: -// - The only PO operator is Package.Scope.Lookup, which requires an identifier. -// - The only OT operator is Object.Type, -// which we encode as '.' because dot cannot appear in an identifier. -// - The TT operators are encoded as [EKPRU]. -// - The OT operators are encoded as [AFMO]; -// three of these (At,Field,Method) require an integer operand, -// which is encoded as a string of decimal digits. -// These indices are stable across different representations -// of the same package, even source and export data. +// - The only PO operator is Package.Scope.Lookup, which requires an identifier. +// - The only OT operator is Object.Type, +// which we encode as '.' because dot cannot appear in an identifier. +// - The TT operators are encoded as [EKPRUTC]; +// one of these (TypeParam) requires an integer operand, +// which is encoded as a string of decimal digits. +// - The TO operators are encoded as [AFMO]; +// three of these (At,Field,Method) require an integer operand, +// which is encoded as a string of decimal digits. +// These indices are stable across different representations +// of the same package, even source and export data. +// The indices used are implementation specific and may not correspond to +// the argument to the go/types function. // // In the example below, // @@ -75,31 +83,32 @@ type Path string // field X has the path "T.UM0.RA1.F0", // representing the following sequence of operations: // -// p.Lookup("T") T -// .Type().Underlying().Method(0). f -// .Type().Results().At(1) b -// .Type().Field(0) X +// p.Lookup("T") T +// .Type().Underlying().Method(0). f +// .Type().Results().At(1) b +// .Type().Field(0) X // // The encoding is not maximally compact---every R or P is // followed by an A, for example---but this simplifies the // encoder and decoder. -// const ( // object->type operators opType = '.' // .Type() (Object) // type->type operators - opElem = 'E' // .Elem() (Pointer, Slice, Array, Chan, Map) - opKey = 'K' // .Key() (Map) - opParams = 'P' // .Params() (Signature) - opResults = 'R' // .Results() (Signature) - opUnderlying = 'U' // .Underlying() (Named) + opElem = 'E' // .Elem() (Pointer, Slice, Array, Chan, Map) + opKey = 'K' // .Key() (Map) + opParams = 'P' // .Params() (Signature) + opResults = 'R' // .Results() (Signature) + opUnderlying = 'U' // .Underlying() (Named) + opTypeParam = 'T' // .TypeParams.At(i) (Named, Signature) + opConstraint = 'C' // .Constraint() (TypeParam) // type->object operators - opAt = 'A' // .At(i) (Tuple) - opField = 'F' // .Field(i) (Struct) - opMethod = 'M' // .Method(i) (Named or Interface; not Struct: "promoted" names are ignored) - opObj = 'O' // .Obj() (Named) + opAt = 'A' // .At(i) (Tuple) + opField = 'F' // .Field(i) (Struct) + opMethod = 'M' // .Method(i) (Named or Interface; not Struct: "promoted" names are ignored) + opObj = 'O' // .Obj() (Named, TypeParam) ) // The For function returns the path to an object relative to its package, @@ -128,10 +137,10 @@ const ( // // For(X) would return a path that denotes the following sequence of operations: // -// p.Scope().Lookup("T") (TypeName T) -// .Type().Underlying().Method(0). (method Func f) -// .Type().Results().At(1) (field Var b) -// .Type().Field(0) (field Var X) +// p.Scope().Lookup("T") (TypeName T) +// .Type().Underlying().Method(0). (method Func f) +// .Type().Results().At(1) (field Var b) +// .Type().Field(0) (field Var X) // // where p is the package (*types.Package) to which X belongs. func For(obj types.Object) (Path, error) { @@ -190,10 +199,15 @@ func For(obj types.Object) (Path, error) { // 3. Not a package-level object. // Reject obviously non-viable cases. switch obj := obj.(type) { + case *types.TypeName: + if _, ok := obj.Type().(*typeparams.TypeParam); !ok { + // With the exception of type parameters, only package-level type names + // have a path. + return "", fmt.Errorf("no path for %v", obj) + } case *types.Const, // Only package-level constants have a path. - *types.TypeName, // Only package-level types have a path. - *types.Label, // Labels are function-local. - *types.PkgName: // PkgNames are file-local. + *types.Label, // Labels are function-local. + *types.PkgName: // PkgNames are file-local. return "", fmt.Errorf("no path for %v", obj) case *types.Var: @@ -210,10 +224,11 @@ func For(obj types.Object) (Path, error) { if recv := obj.Type().(*types.Signature).Recv(); recv == nil { return "", fmt.Errorf("func is not a method: %v", obj) } - // TODO(adonovan): opt: if the method is concrete, - // do a specialized version of the rest of this function so - // that it's O(1) not O(|scope|). Basically 'find' is needed - // only for struct fields and interface methods. + + if path, ok := concreteMethod(obj); ok { + // Fast path for concrete methods that avoids looping over scope. + return path, nil + } default: panic(obj) @@ -226,7 +241,8 @@ func For(obj types.Object) (Path, error) { // the best paths because non-types may // refer to types, but not the reverse. empty := make([]byte, 0, 48) // initial space - for _, name := range scope.Names() { + names := scope.Names() + for _, name := range names { o := scope.Lookup(name) tname, ok := o.(*types.TypeName) if !ok { @@ -240,12 +256,18 @@ func For(obj types.Object) (Path, error) { if tname.IsAlias() { // type alias - if r := find(obj, T, path); r != nil { + if r := find(obj, T, path, nil); r != nil { return Path(r), nil } } else { + if named, _ := T.(*types.Named); named != nil { + if r := findTypeParam(obj, typeparams.ForNamed(named), path, nil); r != nil { + // generic named type + return Path(r), nil + } + } // defined (named) type - if r := find(obj, T.Underlying(), append(path, opUnderlying)); r != nil { + if r := find(obj, T.Underlying(), append(path, opUnderlying), nil); r != nil { return Path(r), nil } } @@ -253,13 +275,13 @@ func For(obj types.Object) (Path, error) { // Then inspect everything else: // non-types, and declared methods of defined types. - for _, name := range scope.Names() { + for _, name := range names { o := scope.Lookup(name) path := append(empty, name...) if _, ok := o.(*types.TypeName); !ok { if o.Exported() { // exported non-type (const, var, func) - if r := find(obj, o.Type(), append(path, opType)); r != nil { + if r := find(obj, o.Type(), append(path, opType), nil); r != nil { return Path(r), nil } } @@ -269,13 +291,17 @@ func For(obj types.Object) (Path, error) { // Inspect declared methods of defined types. if T, ok := o.Type().(*types.Named); ok { path = append(path, opType) - for i := 0; i < T.NumMethods(); i++ { - m := T.Method(i) + // Note that method index here is always with respect + // to canonical ordering of methods, regardless of how + // they appear in the underlying type. + canonical := canonicalize(T) + for i := 0; i < len(canonical); i++ { + m := canonical[i] path2 := appendOpArg(path, opMethod, i) if m == obj { return Path(path2), nil // found declared method } - if r := find(obj, m.Type(), append(path2, opType)); r != nil { + if r := find(obj, m.Type(), append(path2, opType), nil); r != nil { return Path(r), nil } } @@ -291,39 +317,136 @@ func appendOpArg(path []byte, op byte, arg int) []byte { return path } +// concreteMethod returns the path for meth, which must have a non-nil receiver. +// The second return value indicates success and may be false if the method is +// an interface method or if it is an instantiated method. +// +// This function is just an optimization that avoids the general scope walking +// approach. You are expected to fall back to the general approach if this +// function fails. +func concreteMethod(meth *types.Func) (Path, bool) { + // Concrete methods can only be declared on package-scoped named types. For + // that reason we can skip the expensive walk over the package scope: the + // path will always be package -> named type -> method. We can trivially get + // the type name from the receiver, and only have to look over the type's + // methods to find the method index. + // + // Methods on generic types require special consideration, however. Consider + // the following package: + // + // L1: type S[T any] struct{} + // L2: func (recv S[A]) Foo() { recv.Bar() } + // L3: func (recv S[B]) Bar() { } + // L4: type Alias = S[int] + // L5: func _[T any]() { var s S[int]; s.Foo() } + // + // The receivers of methods on generic types are instantiations. L2 and L3 + // instantiate S with the type-parameters A and B, which are scoped to the + // respective methods. L4 and L5 each instantiate S with int. Each of these + // instantiations has its own method set, full of methods (and thus objects) + // with receivers whose types are the respective instantiations. In other + // words, we have + // + // S[A].Foo, S[A].Bar + // S[B].Foo, S[B].Bar + // S[int].Foo, S[int].Bar + // + // We may thus be trying to produce object paths for any of these objects. + // + // S[A].Foo and S[B].Bar are the origin methods, and their paths are S.Foo + // and S.Bar, which are the paths that this function naturally produces. + // + // S[A].Bar, S[B].Foo, and both methods on S[int] are instantiations that + // don't correspond to the origin methods. For S[int], this is significant. + // The most precise object path for S[int].Foo, for example, is Alias.Foo, + // not S.Foo. Our function, however, would produce S.Foo, which would + // resolve to a different object. + // + // For S[A].Bar and S[B].Foo it could be argued that S.Bar and S.Foo are + // still the correct paths, since only the origin methods have meaningful + // paths. But this is likely only true for trivial cases and has edge cases. + // Since this function is only an optimization, we err on the side of giving + // up, deferring to the slower but definitely correct algorithm. Most users + // of objectpath will only be giving us origin methods, anyway, as referring + // to instantiated methods is usually not useful. + + if typeparams.OriginMethod(meth) != meth { + return "", false + } + + recvT := meth.Type().(*types.Signature).Recv().Type() + if ptr, ok := recvT.(*types.Pointer); ok { + recvT = ptr.Elem() + } + + named, ok := recvT.(*types.Named) + if !ok { + return "", false + } + + if types.IsInterface(named) { + // Named interfaces don't have to be package-scoped + // + // TODO(dominikh): opt: if scope.Lookup(name) == named, then we can apply this optimization to interface + // methods, too, I think. + return "", false + } + + // Preallocate space for the name, opType, opMethod, and some digits. + name := named.Obj().Name() + path := make([]byte, 0, len(name)+8) + path = append(path, name...) + path = append(path, opType) + canonical := canonicalize(named) + for i, m := range canonical { + if m == meth { + path = appendOpArg(path, opMethod, i) + return Path(path), true + } + } + + panic(fmt.Sprintf("couldn't find method %s on type %s", meth, named)) +} + // find finds obj within type T, returning the path to it, or nil if not found. -func find(obj types.Object, T types.Type, path []byte) []byte { +// +// The seen map is used to short circuit cycles through type parameters. If +// nil, it will be allocated as necessary. +func find(obj types.Object, T types.Type, path []byte, seen map[*types.TypeName]bool) []byte { switch T := T.(type) { case *types.Basic, *types.Named: // Named types belonging to pkg were handled already, // so T must belong to another package. No path. return nil case *types.Pointer: - return find(obj, T.Elem(), append(path, opElem)) + return find(obj, T.Elem(), append(path, opElem), seen) case *types.Slice: - return find(obj, T.Elem(), append(path, opElem)) + return find(obj, T.Elem(), append(path, opElem), seen) case *types.Array: - return find(obj, T.Elem(), append(path, opElem)) + return find(obj, T.Elem(), append(path, opElem), seen) case *types.Chan: - return find(obj, T.Elem(), append(path, opElem)) + return find(obj, T.Elem(), append(path, opElem), seen) case *types.Map: - if r := find(obj, T.Key(), append(path, opKey)); r != nil { + if r := find(obj, T.Key(), append(path, opKey), seen); r != nil { return r } - return find(obj, T.Elem(), append(path, opElem)) + return find(obj, T.Elem(), append(path, opElem), seen) case *types.Signature: - if r := find(obj, T.Params(), append(path, opParams)); r != nil { + if r := findTypeParam(obj, typeparams.ForSignature(T), path, seen); r != nil { + return r + } + if r := find(obj, T.Params(), append(path, opParams), seen); r != nil { return r } - return find(obj, T.Results(), append(path, opResults)) + return find(obj, T.Results(), append(path, opResults), seen) case *types.Struct: for i := 0; i < T.NumFields(); i++ { - f := T.Field(i) + fld := T.Field(i) path2 := appendOpArg(path, opField, i) - if f == obj { + if fld == obj { return path2 // found field var } - if r := find(obj, f.Type(), append(path2, opType)); r != nil { + if r := find(obj, fld.Type(), append(path2, opType), seen); r != nil { return r } } @@ -335,7 +458,7 @@ func find(obj types.Object, T types.Type, path []byte) []byte { if v == obj { return path2 // found param/result var } - if r := find(obj, v.Type(), append(path2, opType)); r != nil { + if r := find(obj, v.Type(), append(path2, opType), seen); r != nil { return r } } @@ -347,15 +470,42 @@ func find(obj types.Object, T types.Type, path []byte) []byte { if m == obj { return path2 // found interface method } - if r := find(obj, m.Type(), append(path2, opType)); r != nil { + if r := find(obj, m.Type(), append(path2, opType), seen); r != nil { return r } } return nil + case *typeparams.TypeParam: + name := T.Obj() + if name == obj { + return append(path, opObj) + } + if seen[name] { + return nil + } + if seen == nil { + seen = make(map[*types.TypeName]bool) + } + seen[name] = true + if r := find(obj, T.Constraint(), append(path, opConstraint), seen); r != nil { + return r + } + return nil } panic(T) } +func findTypeParam(obj types.Object, list *typeparams.TypeParamList, path []byte, seen map[*types.TypeName]bool) []byte { + for i := 0; i < list.Len(); i++ { + tparam := list.At(i) + path2 := appendOpArg(path, opTypeParam, i) + if r := find(obj, tparam, path2, seen); r != nil { + return r + } + } + return nil +} + // Object returns the object denoted by path p within the package pkg. func Object(pkg *types.Package, p Path) (types.Object, error) { if p == "" { @@ -380,10 +530,13 @@ func Object(pkg *types.Package, p Path) (types.Object, error) { type hasElem interface { Elem() types.Type } - // abstraction of *types.{Interface,Named} - type hasMethods interface { - Method(int) *types.Func - NumMethods() int + // abstraction of *types.{Named,Signature} + type hasTypeParams interface { + TypeParams() *typeparams.TypeParamList + } + // abstraction of *types.{Named,TypeParam} + type hasObj interface { + Obj() *types.TypeName } // The loop state is the pair (t, obj), @@ -400,7 +553,7 @@ func Object(pkg *types.Package, p Path) (types.Object, error) { // Codes [AFM] have an integer operand. var index int switch code { - case opAt, opField, opMethod: + case opAt, opField, opMethod, opTypeParam: rest := strings.TrimLeft(suffix, "0123456789") numerals := suffix[:len(suffix)-len(rest)] suffix = rest @@ -465,14 +618,32 @@ func Object(pkg *types.Package, p Path) (types.Object, error) { case opUnderlying: named, ok := t.(*types.Named) if !ok { - return nil, fmt.Errorf("cannot apply %q to %s (got %s, want named)", code, t, t) + return nil, fmt.Errorf("cannot apply %q to %s (got %T, want named)", code, t, t) } t = named.Underlying() + case opTypeParam: + hasTypeParams, ok := t.(hasTypeParams) // Named, Signature + if !ok { + return nil, fmt.Errorf("cannot apply %q to %s (got %T, want named or signature)", code, t, t) + } + tparams := hasTypeParams.TypeParams() + if n := tparams.Len(); index >= n { + return nil, fmt.Errorf("tuple index %d out of range [0-%d)", index, n) + } + t = tparams.At(index) + + case opConstraint: + tparam, ok := t.(*typeparams.TypeParam) + if !ok { + return nil, fmt.Errorf("cannot apply %q to %s (got %T, want type parameter)", code, t, t) + } + t = tparam.Constraint() + case opAt: tuple, ok := t.(*types.Tuple) if !ok { - return nil, fmt.Errorf("cannot apply %q to %s (got %s, want tuple)", code, t, t) + return nil, fmt.Errorf("cannot apply %q to %s (got %T, want tuple)", code, t, t) } if n := tuple.Len(); index >= n { return nil, fmt.Errorf("tuple index %d out of range [0-%d)", index, n) @@ -494,20 +665,21 @@ func Object(pkg *types.Package, p Path) (types.Object, error) { case opMethod: hasMethods, ok := t.(hasMethods) // Interface or Named if !ok { - return nil, fmt.Errorf("cannot apply %q to %s (got %s, want interface or named)", code, t, t) + return nil, fmt.Errorf("cannot apply %q to %s (got %T, want interface or named)", code, t, t) } - if n := hasMethods.NumMethods(); index >= n { + canonical := canonicalize(hasMethods) + if n := len(canonical); index >= n { return nil, fmt.Errorf("method index %d out of range [0-%d)", index, n) } - obj = hasMethods.Method(index) + obj = canonical[index] t = nil case opObj: - named, ok := t.(*types.Named) + hasObj, ok := t.(hasObj) if !ok { - return nil, fmt.Errorf("cannot apply %q to %s (got %s, want named)", code, t, t) + return nil, fmt.Errorf("cannot apply %q to %s (got %T, want named or type param)", code, t, t) } - obj = named.Obj() + obj = hasObj.Obj() t = nil default: @@ -521,3 +693,28 @@ func Object(pkg *types.Package, p Path) (types.Object, error) { return obj, nil // success } + +// hasMethods is an abstraction of *types.{Interface,Named}. This is pulled up +// because it is used by methodOrdering, which is in turn used by both encoding +// and decoding. +type hasMethods interface { + Method(int) *types.Func + NumMethods() int +} + +// canonicalize returns a canonical order for the methods in a hasMethod. +func canonicalize(hm hasMethods) []*types.Func { + count := hm.NumMethods() + if count <= 0 { + return nil + } + canon := make([]*types.Func, count) + for i := 0; i < count; i++ { + canon[i] = hm.Method(i) + } + less := func(i, j int) bool { + return canon[i].Id() < canon[j].Id() + } + sort.Slice(canon, less) + return canon +} diff --git a/vendor/golang.org/x/tools/go/types/typeutil/callee.go b/vendor/golang.org/x/tools/go/types/typeutil/callee.go index 38f596d..90b3ab0 100644 --- a/vendor/golang.org/x/tools/go/types/typeutil/callee.go +++ b/vendor/golang.org/x/tools/go/types/typeutil/callee.go @@ -9,13 +9,29 @@ import ( "go/types" "golang.org/x/tools/go/ast/astutil" + "golang.org/x/tools/internal/typeparams" ) // Callee returns the named target of a function call, if any: // a function, method, builtin, or variable. +// +// Functions and methods may potentially have type parameters. func Callee(info *types.Info, call *ast.CallExpr) types.Object { + fun := astutil.Unparen(call.Fun) + + // Look through type instantiation if necessary. + isInstance := false + switch fun.(type) { + case *ast.IndexExpr, *typeparams.IndexListExpr: + // When extracting the callee from an *IndexExpr, we need to check that + // it is a *types.Func and not a *types.Var. + // Example: Don't match a slice m within the expression `m[0]()`. + isInstance = true + fun, _, _, _ = typeparams.UnpackIndexExpr(fun) + } + var obj types.Object - switch fun := astutil.Unparen(call.Fun).(type) { + switch fun := fun.(type) { case *ast.Ident: obj = info.Uses[fun] // type, var, builtin, or declared func case *ast.SelectorExpr: @@ -28,11 +44,18 @@ func Callee(info *types.Info, call *ast.CallExpr) types.Object { if _, ok := obj.(*types.TypeName); ok { return nil // T(x) is a conversion, not a call } + // A Func is required to match instantiations. + if _, ok := obj.(*types.Func); isInstance && !ok { + return nil // Was not a Func. + } return obj } -// StaticCallee returns the target (function or method) of a static -// function call, if any. It returns nil for calls to builtins. +// StaticCallee returns the target (function or method) of a static function +// call, if any. It returns nil for calls to builtins. +// +// Note: for calls of instantiated functions and methods, StaticCallee returns +// the corresponding generic function or method on the generic type. func StaticCallee(info *types.Info, call *ast.CallExpr) *types.Func { if f, ok := Callee(info, call).(*types.Func); ok && !interfaceMethod(f) { return f diff --git a/vendor/golang.org/x/tools/go/types/typeutil/imports.go b/vendor/golang.org/x/tools/go/types/typeutil/imports.go index 9c441db..b81ce0c 100644 --- a/vendor/golang.org/x/tools/go/types/typeutil/imports.go +++ b/vendor/golang.org/x/tools/go/types/typeutil/imports.go @@ -12,7 +12,6 @@ import "go/types" // package Q, Q appears earlier than P in the result. // The algorithm follows import statements in the order they // appear in the source code, so the result is a total order. -// func Dependencies(pkgs ...*types.Package) []*types.Package { var result []*types.Package seen := make(map[*types.Package]bool) diff --git a/vendor/golang.org/x/tools/go/types/typeutil/map.go b/vendor/golang.org/x/tools/go/types/typeutil/map.go index c7f7545..dcc029b 100644 --- a/vendor/golang.org/x/tools/go/types/typeutil/map.go +++ b/vendor/golang.org/x/tools/go/types/typeutil/map.go @@ -11,6 +11,8 @@ import ( "fmt" "go/types" "reflect" + + "golang.org/x/tools/internal/typeparams" ) // Map is a hash-table-based mapping from types (types.Type) to @@ -22,7 +24,6 @@ import ( // Just as with map[K]V, a nil *Map is a valid empty map. // // Not thread-safe. -// type Map struct { hasher Hasher // shared by many Maps table map[uint32][]entry // maps hash to bucket; entry.key==nil means unused @@ -55,14 +56,12 @@ type entry struct { // // If SetHasher is not called, the Map will create a private hasher at // the first call to Insert. -// func (m *Map) SetHasher(hasher Hasher) { m.hasher = hasher } // Delete removes the entry with the given key, if any. // It returns true if the entry was found. -// func (m *Map) Delete(key types.Type) bool { if m != nil && m.table != nil { hash := m.hasher.Hash(key) @@ -82,7 +81,6 @@ func (m *Map) Delete(key types.Type) bool { // At returns the map entry for the given key. // The result is nil if the entry is not present. -// func (m *Map) At(key types.Type) interface{} { if m != nil && m.table != nil { for _, e := range m.table[m.hasher.Hash(key)] { @@ -143,7 +141,6 @@ func (m *Map) Len() int { // f will not be invoked for it, but if f inserts a map entry that // Iterate has not yet reached, whether or not f will be invoked for // it is unspecified. -// func (m *Map) Iterate(f func(key types.Type, value interface{})) { if m != nil { for _, bucket := range m.table { @@ -188,14 +185,12 @@ func (m *Map) toString(values bool) string { // String returns a string representation of the map's entries. // Values are printed using fmt.Sprintf("%v", v). // Order is unspecified. -// func (m *Map) String() string { return m.toString(true) } // KeysString returns a string representation of the map's key set. // Order is unspecified. -// func (m *Map) KeysString() string { return m.toString(false) } @@ -211,11 +206,29 @@ func (m *Map) KeysString() string { // Call MakeHasher to create a Hasher. type Hasher struct { memo map[types.Type]uint32 + + // ptrMap records pointer identity. + ptrMap map[interface{}]uint32 + + // sigTParams holds type parameters from the signature being hashed. + // Signatures are considered identical modulo renaming of type parameters, so + // within the scope of a signature type the identity of the signature's type + // parameters is just their index. + // + // Since the language does not currently support referring to uninstantiated + // generic types or functions, and instantiated signatures do not have type + // parameter lists, we should never encounter a second non-empty type + // parameter list when hashing a generic signature. + sigTParams *typeparams.TypeParamList } // MakeHasher returns a new Hasher instance. func MakeHasher() Hasher { - return Hasher{make(map[types.Type]uint32)} + return Hasher{ + memo: make(map[types.Type]uint32), + ptrMap: make(map[interface{}]uint32), + sigTParams: nil, + } } // Hash computes a hash value for the given type t such that @@ -273,17 +286,62 @@ func (h Hasher) hashFor(t types.Type) uint32 { if t.Variadic() { hash *= 8863 } + + // Use a separate hasher for types inside of the signature, where type + // parameter identity is modified to be (index, constraint). We must use a + // new memo for this hasher as type identity may be affected by this + // masking. For example, in func[T any](*T), the identity of *T depends on + // whether we are mapping the argument in isolation, or recursively as part + // of hashing the signature. + // + // We should never encounter a generic signature while hashing another + // generic signature, but defensively set sigTParams only if h.mask is + // unset. + tparams := typeparams.ForSignature(t) + if h.sigTParams == nil && tparams.Len() != 0 { + h = Hasher{ + // There may be something more efficient than discarding the existing + // memo, but it would require detecting whether types are 'tainted' by + // references to type parameters. + memo: make(map[types.Type]uint32), + // Re-using ptrMap ensures that pointer identity is preserved in this + // hasher. + ptrMap: h.ptrMap, + sigTParams: tparams, + } + } + + for i := 0; i < tparams.Len(); i++ { + tparam := tparams.At(i) + hash += 7 * h.Hash(tparam.Constraint()) + } + return hash + 3*h.hashTuple(t.Params()) + 5*h.hashTuple(t.Results()) + case *typeparams.Union: + return h.hashUnion(t) + case *types.Interface: + // Interfaces are identical if they have the same set of methods, with + // identical names and types, and they have the same set of type + // restrictions. See go/types.identical for more details. var hash uint32 = 9103 + + // Hash methods. for i, n := 0, t.NumMethods(); i < n; i++ { - // See go/types.identicalMethods for rationale. // Method order is not significant. // Ignore m.Pkg(). m := t.Method(i) hash += 3*hashString(m.Name()) + 5*h.Hash(m.Type()) } + + // Hash type restrictions. + terms, err := typeparams.InterfaceTermSet(t) + // if err != nil t has invalid type restrictions. + if err == nil { + hash += h.hashTermSet(terms) + } + return hash case *types.Map: @@ -293,21 +351,86 @@ func (h Hasher) hashFor(t types.Type) uint32 { return 9127 + 2*uint32(t.Dir()) + 3*h.Hash(t.Elem()) case *types.Named: - // Not safe with a copying GC; objects may move. - return uint32(reflect.ValueOf(t.Obj()).Pointer()) + hash := h.hashPtr(t.Obj()) + targs := typeparams.NamedTypeArgs(t) + for i := 0; i < targs.Len(); i++ { + targ := targs.At(i) + hash += 2 * h.Hash(targ) + } + return hash + + case *typeparams.TypeParam: + return h.hashTypeParam(t) case *types.Tuple: return h.hashTuple(t) } - panic(t) + + panic(fmt.Sprintf("%T: %v", t, t)) } func (h Hasher) hashTuple(tuple *types.Tuple) uint32 { // See go/types.identicalTypes for rationale. n := tuple.Len() - var hash uint32 = 9137 + 2*uint32(n) + hash := 9137 + 2*uint32(n) for i := 0; i < n; i++ { hash += 3 * h.Hash(tuple.At(i).Type()) } return hash } + +func (h Hasher) hashUnion(t *typeparams.Union) uint32 { + // Hash type restrictions. + terms, err := typeparams.UnionTermSet(t) + // if err != nil t has invalid type restrictions. Fall back on a non-zero + // hash. + if err != nil { + return 9151 + } + return h.hashTermSet(terms) +} + +func (h Hasher) hashTermSet(terms []*typeparams.Term) uint32 { + hash := 9157 + 2*uint32(len(terms)) + for _, term := range terms { + // term order is not significant. + termHash := h.Hash(term.Type()) + if term.Tilde() { + termHash *= 9161 + } + hash += 3 * termHash + } + return hash +} + +// hashTypeParam returns a hash of the type parameter t, with a hash value +// depending on whether t is contained in h.sigTParams. +// +// If h.sigTParams is set and contains t, then we are in the process of hashing +// a signature, and the hash value of t must depend only on t's index and +// constraint: signatures are considered identical modulo type parameter +// renaming. To avoid infinite recursion, we only hash the type parameter +// index, and rely on types.Identical to handle signatures where constraints +// are not identical. +// +// Otherwise the hash of t depends only on t's pointer identity. +func (h Hasher) hashTypeParam(t *typeparams.TypeParam) uint32 { + if h.sigTParams != nil { + i := t.Index() + if i >= 0 && i < h.sigTParams.Len() && t == h.sigTParams.At(i) { + return 9173 + 3*uint32(i) + } + } + return h.hashPtr(t.Obj()) +} + +// hashPtr hashes the pointer identity of ptr. It uses h.ptrMap to ensure that +// pointers values are not dependent on the GC. +func (h Hasher) hashPtr(ptr interface{}) uint32 { + if hash, ok := h.ptrMap[ptr]; ok { + return hash + } + hash := uint32(reflect.ValueOf(ptr).Pointer()) + h.ptrMap[ptr] = hash + return hash +} diff --git a/vendor/golang.org/x/tools/go/types/typeutil/methodsetcache.go b/vendor/golang.org/x/tools/go/types/typeutil/methodsetcache.go index 3208461..a5d9310 100644 --- a/vendor/golang.org/x/tools/go/types/typeutil/methodsetcache.go +++ b/vendor/golang.org/x/tools/go/types/typeutil/methodsetcache.go @@ -25,7 +25,6 @@ type MethodSetCache struct { // If cache is nil, this function is equivalent to types.NewMethodSet(T). // Utility functions can thus expose an optional *MethodSetCache // parameter to clients that care about performance. -// func (cache *MethodSetCache) MethodSet(T types.Type) *types.MethodSet { if cache == nil { return types.NewMethodSet(T) diff --git a/vendor/golang.org/x/tools/go/types/typeutil/ui.go b/vendor/golang.org/x/tools/go/types/typeutil/ui.go index 9849c24..fa55b0a 100644 --- a/vendor/golang.org/x/tools/go/types/typeutil/ui.go +++ b/vendor/golang.org/x/tools/go/types/typeutil/ui.go @@ -22,7 +22,6 @@ import "go/types" // this function is intended only for user interfaces. // // The order of the result is as for types.MethodSet(T). -// func IntuitiveMethodSet(T types.Type, msets *MethodSetCache) []*types.Selection { isPointerToConcrete := func(T types.Type) bool { ptr, ok := T.(*types.Pointer) diff --git a/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go b/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go new file mode 100644 index 0000000..e32152a --- /dev/null +++ b/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go @@ -0,0 +1,397 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package analysisinternal exposes internal-only fields from go/analysis. +package analysisinternal + +import ( + "bytes" + "fmt" + "go/ast" + "go/token" + "go/types" + "strconv" +) + +// Flag to gate diagnostics for fuzz tests in 1.18. +var DiagnoseFuzzTests bool = false + +var ( + GetTypeErrors func(p interface{}) []types.Error + SetTypeErrors func(p interface{}, errors []types.Error) +) + +func TypeErrorEndPos(fset *token.FileSet, src []byte, start token.Pos) token.Pos { + // Get the end position for the type error. + offset, end := fset.PositionFor(start, false).Offset, start + if offset >= len(src) { + return end + } + if width := bytes.IndexAny(src[offset:], " \n,():;[]+-*"); width > 0 { + end = start + token.Pos(width) + } + return end +} + +func ZeroValue(f *ast.File, pkg *types.Package, typ types.Type) ast.Expr { + under := typ + if n, ok := typ.(*types.Named); ok { + under = n.Underlying() + } + switch u := under.(type) { + case *types.Basic: + switch { + case u.Info()&types.IsNumeric != 0: + return &ast.BasicLit{Kind: token.INT, Value: "0"} + case u.Info()&types.IsBoolean != 0: + return &ast.Ident{Name: "false"} + case u.Info()&types.IsString != 0: + return &ast.BasicLit{Kind: token.STRING, Value: `""`} + default: + panic("unknown basic type") + } + case *types.Chan, *types.Interface, *types.Map, *types.Pointer, *types.Signature, *types.Slice, *types.Array: + return ast.NewIdent("nil") + case *types.Struct: + texpr := TypeExpr(f, pkg, typ) // typ because we want the name here. + if texpr == nil { + return nil + } + return &ast.CompositeLit{ + Type: texpr, + } + } + return nil +} + +// IsZeroValue checks whether the given expression is a 'zero value' (as determined by output of +// analysisinternal.ZeroValue) +func IsZeroValue(expr ast.Expr) bool { + switch e := expr.(type) { + case *ast.BasicLit: + return e.Value == "0" || e.Value == `""` + case *ast.Ident: + return e.Name == "nil" || e.Name == "false" + default: + return false + } +} + +func TypeExpr(f *ast.File, pkg *types.Package, typ types.Type) ast.Expr { + switch t := typ.(type) { + case *types.Basic: + switch t.Kind() { + case types.UnsafePointer: + return &ast.SelectorExpr{X: ast.NewIdent("unsafe"), Sel: ast.NewIdent("Pointer")} + default: + return ast.NewIdent(t.Name()) + } + case *types.Pointer: + x := TypeExpr(f, pkg, t.Elem()) + if x == nil { + return nil + } + return &ast.UnaryExpr{ + Op: token.MUL, + X: x, + } + case *types.Array: + elt := TypeExpr(f, pkg, t.Elem()) + if elt == nil { + return nil + } + return &ast.ArrayType{ + Len: &ast.BasicLit{ + Kind: token.INT, + Value: fmt.Sprintf("%d", t.Len()), + }, + Elt: elt, + } + case *types.Slice: + elt := TypeExpr(f, pkg, t.Elem()) + if elt == nil { + return nil + } + return &ast.ArrayType{ + Elt: elt, + } + case *types.Map: + key := TypeExpr(f, pkg, t.Key()) + value := TypeExpr(f, pkg, t.Elem()) + if key == nil || value == nil { + return nil + } + return &ast.MapType{ + Key: key, + Value: value, + } + case *types.Chan: + dir := ast.ChanDir(t.Dir()) + if t.Dir() == types.SendRecv { + dir = ast.SEND | ast.RECV + } + value := TypeExpr(f, pkg, t.Elem()) + if value == nil { + return nil + } + return &ast.ChanType{ + Dir: dir, + Value: value, + } + case *types.Signature: + var params []*ast.Field + for i := 0; i < t.Params().Len(); i++ { + p := TypeExpr(f, pkg, t.Params().At(i).Type()) + if p == nil { + return nil + } + params = append(params, &ast.Field{ + Type: p, + Names: []*ast.Ident{ + { + Name: t.Params().At(i).Name(), + }, + }, + }) + } + var returns []*ast.Field + for i := 0; i < t.Results().Len(); i++ { + r := TypeExpr(f, pkg, t.Results().At(i).Type()) + if r == nil { + return nil + } + returns = append(returns, &ast.Field{ + Type: r, + }) + } + return &ast.FuncType{ + Params: &ast.FieldList{ + List: params, + }, + Results: &ast.FieldList{ + List: returns, + }, + } + case *types.Named: + if t.Obj().Pkg() == nil { + return ast.NewIdent(t.Obj().Name()) + } + if t.Obj().Pkg() == pkg { + return ast.NewIdent(t.Obj().Name()) + } + pkgName := t.Obj().Pkg().Name() + + // If the file already imports the package under another name, use that. + for _, cand := range f.Imports { + if path, _ := strconv.Unquote(cand.Path.Value); path == t.Obj().Pkg().Path() { + if cand.Name != nil && cand.Name.Name != "" { + pkgName = cand.Name.Name + } + } + } + if pkgName == "." { + return ast.NewIdent(t.Obj().Name()) + } + return &ast.SelectorExpr{ + X: ast.NewIdent(pkgName), + Sel: ast.NewIdent(t.Obj().Name()), + } + case *types.Struct: + return ast.NewIdent(t.String()) + case *types.Interface: + return ast.NewIdent(t.String()) + default: + return nil + } +} + +type TypeErrorPass string + +const ( + NoNewVars TypeErrorPass = "nonewvars" + NoResultValues TypeErrorPass = "noresultvalues" + UndeclaredName TypeErrorPass = "undeclaredname" +) + +// StmtToInsertVarBefore returns the ast.Stmt before which we can safely insert a new variable. +// Some examples: +// +// Basic Example: +// z := 1 +// y := z + x +// If x is undeclared, then this function would return `y := z + x`, so that we +// can insert `x := ` on the line before `y := z + x`. +// +// If stmt example: +// if z == 1 { +// } else if z == y {} +// If y is undeclared, then this function would return `if z == 1 {`, because we cannot +// insert a statement between an if and an else if statement. As a result, we need to find +// the top of the if chain to insert `y := ` before. +func StmtToInsertVarBefore(path []ast.Node) ast.Stmt { + enclosingIndex := -1 + for i, p := range path { + if _, ok := p.(ast.Stmt); ok { + enclosingIndex = i + break + } + } + if enclosingIndex == -1 { + return nil + } + enclosingStmt := path[enclosingIndex] + switch enclosingStmt.(type) { + case *ast.IfStmt: + // The enclosingStmt is inside of the if declaration, + // We need to check if we are in an else-if stmt and + // get the base if statement. + return baseIfStmt(path, enclosingIndex) + case *ast.CaseClause: + // Get the enclosing switch stmt if the enclosingStmt is + // inside of the case statement. + for i := enclosingIndex + 1; i < len(path); i++ { + if node, ok := path[i].(*ast.SwitchStmt); ok { + return node + } else if node, ok := path[i].(*ast.TypeSwitchStmt); ok { + return node + } + } + } + if len(path) <= enclosingIndex+1 { + return enclosingStmt.(ast.Stmt) + } + // Check if the enclosing statement is inside another node. + switch expr := path[enclosingIndex+1].(type) { + case *ast.IfStmt: + // Get the base if statement. + return baseIfStmt(path, enclosingIndex+1) + case *ast.ForStmt: + if expr.Init == enclosingStmt || expr.Post == enclosingStmt { + return expr + } + } + return enclosingStmt.(ast.Stmt) +} + +// baseIfStmt walks up the if/else-if chain until we get to +// the top of the current if chain. +func baseIfStmt(path []ast.Node, index int) ast.Stmt { + stmt := path[index] + for i := index + 1; i < len(path); i++ { + if node, ok := path[i].(*ast.IfStmt); ok && node.Else == stmt { + stmt = node + continue + } + break + } + return stmt.(ast.Stmt) +} + +// WalkASTWithParent walks the AST rooted at n. The semantics are +// similar to ast.Inspect except it does not call f(nil). +func WalkASTWithParent(n ast.Node, f func(n ast.Node, parent ast.Node) bool) { + var ancestors []ast.Node + ast.Inspect(n, func(n ast.Node) (recurse bool) { + if n == nil { + ancestors = ancestors[:len(ancestors)-1] + return false + } + + var parent ast.Node + if len(ancestors) > 0 { + parent = ancestors[len(ancestors)-1] + } + ancestors = append(ancestors, n) + return f(n, parent) + }) +} + +// FindMatchingIdents finds all identifiers in 'node' that match any of the given types. +// 'pos' represents the position at which the identifiers may be inserted. 'pos' must be within +// the scope of each of identifier we select. Otherwise, we will insert a variable at 'pos' that +// is unrecognized. +func FindMatchingIdents(typs []types.Type, node ast.Node, pos token.Pos, info *types.Info, pkg *types.Package) map[types.Type][]*ast.Ident { + matches := map[types.Type][]*ast.Ident{} + // Initialize matches to contain the variable types we are searching for. + for _, typ := range typs { + if typ == nil { + continue + } + matches[typ] = []*ast.Ident{} + } + seen := map[types.Object]struct{}{} + ast.Inspect(node, func(n ast.Node) bool { + if n == nil { + return false + } + // Prevent circular definitions. If 'pos' is within an assignment statement, do not + // allow any identifiers in that assignment statement to be selected. Otherwise, + // we could do the following, where 'x' satisfies the type of 'f0': + // + // x := fakeStruct{f0: x} + // + assignment, ok := n.(*ast.AssignStmt) + if ok && pos > assignment.Pos() && pos <= assignment.End() { + return false + } + if n.End() > pos { + return n.Pos() <= pos + } + ident, ok := n.(*ast.Ident) + if !ok || ident.Name == "_" { + return true + } + obj := info.Defs[ident] + if obj == nil || obj.Type() == nil { + return true + } + if _, ok := obj.(*types.TypeName); ok { + return true + } + // Prevent duplicates in matches' values. + if _, ok = seen[obj]; ok { + return true + } + seen[obj] = struct{}{} + // Find the scope for the given position. Then, check whether the object + // exists within the scope. + innerScope := pkg.Scope().Innermost(pos) + if innerScope == nil { + return true + } + _, foundObj := innerScope.LookupParent(ident.Name, pos) + if foundObj != obj { + return true + } + // The object must match one of the types that we are searching for. + if idents, ok := matches[obj.Type()]; ok { + matches[obj.Type()] = append(idents, ast.NewIdent(ident.Name)) + } + // If the object type does not exactly match any of the target types, greedily + // find the first target type that the object type can satisfy. + for typ := range matches { + if obj.Type() == typ { + continue + } + if equivalentTypes(obj.Type(), typ) { + matches[typ] = append(matches[typ], ast.NewIdent(ident.Name)) + } + } + return true + }) + return matches +} + +func equivalentTypes(want, got types.Type) bool { + if want == got || types.Identical(want, got) { + return true + } + // Code segment to help check for untyped equality from (golang/go#32146). + if rhs, ok := want.(*types.Basic); ok && rhs.Info()&types.IsUntyped > 0 { + if lhs, ok := got.Underlying().(*types.Basic); ok { + return rhs.Info()&types.IsConstType == lhs.Info()&types.IsConstType + } + } + return types.AssignableTo(want, got) +} diff --git a/vendor/golang.org/x/tools/internal/event/core/event.go b/vendor/golang.org/x/tools/internal/event/core/event.go new file mode 100644 index 0000000..a6cf0e6 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/core/event.go @@ -0,0 +1,85 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package core provides support for event based telemetry. +package core + +import ( + "fmt" + "time" + + "golang.org/x/tools/internal/event/label" +) + +// Event holds the information about an event of note that occurred. +type Event struct { + at time.Time + + // As events are often on the stack, storing the first few labels directly + // in the event can avoid an allocation at all for the very common cases of + // simple events. + // The length needs to be large enough to cope with the majority of events + // but no so large as to cause undue stack pressure. + // A log message with two values will use 3 labels (one for each value and + // one for the message itself). + + static [3]label.Label // inline storage for the first few labels + dynamic []label.Label // dynamically sized storage for remaining labels +} + +// eventLabelMap implements label.Map for a the labels of an Event. +type eventLabelMap struct { + event Event +} + +func (ev Event) At() time.Time { return ev.at } + +func (ev Event) Format(f fmt.State, r rune) { + if !ev.at.IsZero() { + fmt.Fprint(f, ev.at.Format("2006/01/02 15:04:05 ")) + } + for index := 0; ev.Valid(index); index++ { + if l := ev.Label(index); l.Valid() { + fmt.Fprintf(f, "\n\t%v", l) + } + } +} + +func (ev Event) Valid(index int) bool { + return index >= 0 && index < len(ev.static)+len(ev.dynamic) +} + +func (ev Event) Label(index int) label.Label { + if index < len(ev.static) { + return ev.static[index] + } + return ev.dynamic[index-len(ev.static)] +} + +func (ev Event) Find(key label.Key) label.Label { + for _, l := range ev.static { + if l.Key() == key { + return l + } + } + for _, l := range ev.dynamic { + if l.Key() == key { + return l + } + } + return label.Label{} +} + +func MakeEvent(static [3]label.Label, labels []label.Label) Event { + return Event{ + static: static, + dynamic: labels, + } +} + +// CloneEvent event returns a copy of the event with the time adjusted to at. +func CloneEvent(ev Event, at time.Time) Event { + ev.at = at + return ev +} diff --git a/vendor/golang.org/x/tools/internal/event/core/export.go b/vendor/golang.org/x/tools/internal/event/core/export.go new file mode 100644 index 0000000..05f3a9a --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/core/export.go @@ -0,0 +1,70 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package core + +import ( + "context" + "sync/atomic" + "time" + "unsafe" + + "golang.org/x/tools/internal/event/label" +) + +// Exporter is a function that handles events. +// It may return a modified context and event. +type Exporter func(context.Context, Event, label.Map) context.Context + +var ( + exporter unsafe.Pointer +) + +// SetExporter sets the global exporter function that handles all events. +// The exporter is called synchronously from the event call site, so it should +// return quickly so as not to hold up user code. +func SetExporter(e Exporter) { + p := unsafe.Pointer(&e) + if e == nil { + // &e is always valid, and so p is always valid, but for the early abort + // of ProcessEvent to be efficient it needs to make the nil check on the + // pointer without having to dereference it, so we make the nil function + // also a nil pointer + p = nil + } + atomic.StorePointer(&exporter, p) +} + +// deliver is called to deliver an event to the supplied exporter. +// it will fill in the time. +func deliver(ctx context.Context, exporter Exporter, ev Event) context.Context { + // add the current time to the event + ev.at = time.Now() + // hand the event off to the current exporter + return exporter(ctx, ev, ev) +} + +// Export is called to deliver an event to the global exporter if set. +func Export(ctx context.Context, ev Event) context.Context { + // get the global exporter and abort early if there is not one + exporterPtr := (*Exporter)(atomic.LoadPointer(&exporter)) + if exporterPtr == nil { + return ctx + } + return deliver(ctx, *exporterPtr, ev) +} + +// ExportPair is called to deliver a start event to the supplied exporter. +// It also returns a function that will deliver the end event to the same +// exporter. +// It will fill in the time. +func ExportPair(ctx context.Context, begin, end Event) (context.Context, func()) { + // get the global exporter and abort early if there is not one + exporterPtr := (*Exporter)(atomic.LoadPointer(&exporter)) + if exporterPtr == nil { + return ctx, func() {} + } + ctx = deliver(ctx, *exporterPtr, begin) + return ctx, func() { deliver(ctx, *exporterPtr, end) } +} diff --git a/vendor/golang.org/x/tools/internal/event/core/fast.go b/vendor/golang.org/x/tools/internal/event/core/fast.go new file mode 100644 index 0000000..06c1d46 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/core/fast.go @@ -0,0 +1,77 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package core + +import ( + "context" + + "golang.org/x/tools/internal/event/keys" + "golang.org/x/tools/internal/event/label" +) + +// Log1 takes a message and one label delivers a log event to the exporter. +// It is a customized version of Print that is faster and does no allocation. +func Log1(ctx context.Context, message string, t1 label.Label) { + Export(ctx, MakeEvent([3]label.Label{ + keys.Msg.Of(message), + t1, + }, nil)) +} + +// Log2 takes a message and two labels and delivers a log event to the exporter. +// It is a customized version of Print that is faster and does no allocation. +func Log2(ctx context.Context, message string, t1 label.Label, t2 label.Label) { + Export(ctx, MakeEvent([3]label.Label{ + keys.Msg.Of(message), + t1, + t2, + }, nil)) +} + +// Metric1 sends a label event to the exporter with the supplied labels. +func Metric1(ctx context.Context, t1 label.Label) context.Context { + return Export(ctx, MakeEvent([3]label.Label{ + keys.Metric.New(), + t1, + }, nil)) +} + +// Metric2 sends a label event to the exporter with the supplied labels. +func Metric2(ctx context.Context, t1, t2 label.Label) context.Context { + return Export(ctx, MakeEvent([3]label.Label{ + keys.Metric.New(), + t1, + t2, + }, nil)) +} + +// Start1 sends a span start event with the supplied label list to the exporter. +// It also returns a function that will end the span, which should normally be +// deferred. +func Start1(ctx context.Context, name string, t1 label.Label) (context.Context, func()) { + return ExportPair(ctx, + MakeEvent([3]label.Label{ + keys.Start.Of(name), + t1, + }, nil), + MakeEvent([3]label.Label{ + keys.End.New(), + }, nil)) +} + +// Start2 sends a span start event with the supplied label list to the exporter. +// It also returns a function that will end the span, which should normally be +// deferred. +func Start2(ctx context.Context, name string, t1, t2 label.Label) (context.Context, func()) { + return ExportPair(ctx, + MakeEvent([3]label.Label{ + keys.Start.Of(name), + t1, + t2, + }, nil), + MakeEvent([3]label.Label{ + keys.End.New(), + }, nil)) +} diff --git a/vendor/golang.org/x/tools/internal/event/doc.go b/vendor/golang.org/x/tools/internal/event/doc.go new file mode 100644 index 0000000..5dc6e6b --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/doc.go @@ -0,0 +1,7 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package event provides a set of packages that cover the main +// concepts of telemetry in an implementation agnostic way. +package event diff --git a/vendor/golang.org/x/tools/internal/event/event.go b/vendor/golang.org/x/tools/internal/event/event.go new file mode 100644 index 0000000..4d55e57 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/event.go @@ -0,0 +1,127 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package event + +import ( + "context" + + "golang.org/x/tools/internal/event/core" + "golang.org/x/tools/internal/event/keys" + "golang.org/x/tools/internal/event/label" +) + +// Exporter is a function that handles events. +// It may return a modified context and event. +type Exporter func(context.Context, core.Event, label.Map) context.Context + +// SetExporter sets the global exporter function that handles all events. +// The exporter is called synchronously from the event call site, so it should +// return quickly so as not to hold up user code. +func SetExporter(e Exporter) { + core.SetExporter(core.Exporter(e)) +} + +// Log takes a message and a label list and combines them into a single event +// before delivering them to the exporter. +func Log(ctx context.Context, message string, labels ...label.Label) { + core.Export(ctx, core.MakeEvent([3]label.Label{ + keys.Msg.Of(message), + }, labels)) +} + +// IsLog returns true if the event was built by the Log function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsLog(ev core.Event) bool { + return ev.Label(0).Key() == keys.Msg +} + +// Error takes a message and a label list and combines them into a single event +// before delivering them to the exporter. It captures the error in the +// delivered event. +func Error(ctx context.Context, message string, err error, labels ...label.Label) { + core.Export(ctx, core.MakeEvent([3]label.Label{ + keys.Msg.Of(message), + keys.Err.Of(err), + }, labels)) +} + +// IsError returns true if the event was built by the Error function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsError(ev core.Event) bool { + return ev.Label(0).Key() == keys.Msg && + ev.Label(1).Key() == keys.Err +} + +// Metric sends a label event to the exporter with the supplied labels. +func Metric(ctx context.Context, labels ...label.Label) { + core.Export(ctx, core.MakeEvent([3]label.Label{ + keys.Metric.New(), + }, labels)) +} + +// IsMetric returns true if the event was built by the Metric function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsMetric(ev core.Event) bool { + return ev.Label(0).Key() == keys.Metric +} + +// Label sends a label event to the exporter with the supplied labels. +func Label(ctx context.Context, labels ...label.Label) context.Context { + return core.Export(ctx, core.MakeEvent([3]label.Label{ + keys.Label.New(), + }, labels)) +} + +// IsLabel returns true if the event was built by the Label function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsLabel(ev core.Event) bool { + return ev.Label(0).Key() == keys.Label +} + +// Start sends a span start event with the supplied label list to the exporter. +// It also returns a function that will end the span, which should normally be +// deferred. +func Start(ctx context.Context, name string, labels ...label.Label) (context.Context, func()) { + return core.ExportPair(ctx, + core.MakeEvent([3]label.Label{ + keys.Start.Of(name), + }, labels), + core.MakeEvent([3]label.Label{ + keys.End.New(), + }, nil)) +} + +// IsStart returns true if the event was built by the Start function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsStart(ev core.Event) bool { + return ev.Label(0).Key() == keys.Start +} + +// IsEnd returns true if the event was built by the End function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsEnd(ev core.Event) bool { + return ev.Label(0).Key() == keys.End +} + +// Detach returns a context without an associated span. +// This allows the creation of spans that are not children of the current span. +func Detach(ctx context.Context) context.Context { + return core.Export(ctx, core.MakeEvent([3]label.Label{ + keys.Detach.New(), + }, nil)) +} + +// IsDetach returns true if the event was built by the Detach function. +// It is intended to be used in exporters to identify the semantics of the +// event when deciding what to do with it. +func IsDetach(ev core.Event) bool { + return ev.Label(0).Key() == keys.Detach +} diff --git a/vendor/golang.org/x/tools/internal/event/keys/keys.go b/vendor/golang.org/x/tools/internal/event/keys/keys.go new file mode 100644 index 0000000..a02206e --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/keys/keys.go @@ -0,0 +1,564 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package keys + +import ( + "fmt" + "io" + "math" + "strconv" + + "golang.org/x/tools/internal/event/label" +) + +// Value represents a key for untyped values. +type Value struct { + name string + description string +} + +// New creates a new Key for untyped values. +func New(name, description string) *Value { + return &Value{name: name, description: description} +} + +func (k *Value) Name() string { return k.name } +func (k *Value) Description() string { return k.description } + +func (k *Value) Format(w io.Writer, buf []byte, l label.Label) { + fmt.Fprint(w, k.From(l)) +} + +// Get can be used to get a label for the key from a label.Map. +func (k *Value) Get(lm label.Map) interface{} { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return nil +} + +// From can be used to get a value from a Label. +func (k *Value) From(t label.Label) interface{} { return t.UnpackValue() } + +// Of creates a new Label with this key and the supplied value. +func (k *Value) Of(value interface{}) label.Label { return label.OfValue(k, value) } + +// Tag represents a key for tagging labels that have no value. +// These are used when the existence of the label is the entire information it +// carries, such as marking events to be of a specific kind, or from a specific +// package. +type Tag struct { + name string + description string +} + +// NewTag creates a new Key for tagging labels. +func NewTag(name, description string) *Tag { + return &Tag{name: name, description: description} +} + +func (k *Tag) Name() string { return k.name } +func (k *Tag) Description() string { return k.description } + +func (k *Tag) Format(w io.Writer, buf []byte, l label.Label) {} + +// New creates a new Label with this key. +func (k *Tag) New() label.Label { return label.OfValue(k, nil) } + +// Int represents a key +type Int struct { + name string + description string +} + +// NewInt creates a new Key for int values. +func NewInt(name, description string) *Int { + return &Int{name: name, description: description} +} + +func (k *Int) Name() string { return k.name } +func (k *Int) Description() string { return k.description } + +func (k *Int) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Int) Of(v int) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *Int) Get(lm label.Map) int { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Int) From(t label.Label) int { return int(t.Unpack64()) } + +// Int8 represents a key +type Int8 struct { + name string + description string +} + +// NewInt8 creates a new Key for int8 values. +func NewInt8(name, description string) *Int8 { + return &Int8{name: name, description: description} +} + +func (k *Int8) Name() string { return k.name } +func (k *Int8) Description() string { return k.description } + +func (k *Int8) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Int8) Of(v int8) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *Int8) Get(lm label.Map) int8 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Int8) From(t label.Label) int8 { return int8(t.Unpack64()) } + +// Int16 represents a key +type Int16 struct { + name string + description string +} + +// NewInt16 creates a new Key for int16 values. +func NewInt16(name, description string) *Int16 { + return &Int16{name: name, description: description} +} + +func (k *Int16) Name() string { return k.name } +func (k *Int16) Description() string { return k.description } + +func (k *Int16) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Int16) Of(v int16) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *Int16) Get(lm label.Map) int16 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Int16) From(t label.Label) int16 { return int16(t.Unpack64()) } + +// Int32 represents a key +type Int32 struct { + name string + description string +} + +// NewInt32 creates a new Key for int32 values. +func NewInt32(name, description string) *Int32 { + return &Int32{name: name, description: description} +} + +func (k *Int32) Name() string { return k.name } +func (k *Int32) Description() string { return k.description } + +func (k *Int32) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendInt(buf, int64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Int32) Of(v int32) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *Int32) Get(lm label.Map) int32 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Int32) From(t label.Label) int32 { return int32(t.Unpack64()) } + +// Int64 represents a key +type Int64 struct { + name string + description string +} + +// NewInt64 creates a new Key for int64 values. +func NewInt64(name, description string) *Int64 { + return &Int64{name: name, description: description} +} + +func (k *Int64) Name() string { return k.name } +func (k *Int64) Description() string { return k.description } + +func (k *Int64) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendInt(buf, k.From(l), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Int64) Of(v int64) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *Int64) Get(lm label.Map) int64 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Int64) From(t label.Label) int64 { return int64(t.Unpack64()) } + +// UInt represents a key +type UInt struct { + name string + description string +} + +// NewUInt creates a new Key for uint values. +func NewUInt(name, description string) *UInt { + return &UInt{name: name, description: description} +} + +func (k *UInt) Name() string { return k.name } +func (k *UInt) Description() string { return k.description } + +func (k *UInt) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *UInt) Of(v uint) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *UInt) Get(lm label.Map) uint { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *UInt) From(t label.Label) uint { return uint(t.Unpack64()) } + +// UInt8 represents a key +type UInt8 struct { + name string + description string +} + +// NewUInt8 creates a new Key for uint8 values. +func NewUInt8(name, description string) *UInt8 { + return &UInt8{name: name, description: description} +} + +func (k *UInt8) Name() string { return k.name } +func (k *UInt8) Description() string { return k.description } + +func (k *UInt8) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *UInt8) Of(v uint8) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *UInt8) Get(lm label.Map) uint8 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *UInt8) From(t label.Label) uint8 { return uint8(t.Unpack64()) } + +// UInt16 represents a key +type UInt16 struct { + name string + description string +} + +// NewUInt16 creates a new Key for uint16 values. +func NewUInt16(name, description string) *UInt16 { + return &UInt16{name: name, description: description} +} + +func (k *UInt16) Name() string { return k.name } +func (k *UInt16) Description() string { return k.description } + +func (k *UInt16) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *UInt16) Of(v uint16) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *UInt16) Get(lm label.Map) uint16 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *UInt16) From(t label.Label) uint16 { return uint16(t.Unpack64()) } + +// UInt32 represents a key +type UInt32 struct { + name string + description string +} + +// NewUInt32 creates a new Key for uint32 values. +func NewUInt32(name, description string) *UInt32 { + return &UInt32{name: name, description: description} +} + +func (k *UInt32) Name() string { return k.name } +func (k *UInt32) Description() string { return k.description } + +func (k *UInt32) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendUint(buf, uint64(k.From(l)), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *UInt32) Of(v uint32) label.Label { return label.Of64(k, uint64(v)) } + +// Get can be used to get a label for the key from a label.Map. +func (k *UInt32) Get(lm label.Map) uint32 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *UInt32) From(t label.Label) uint32 { return uint32(t.Unpack64()) } + +// UInt64 represents a key +type UInt64 struct { + name string + description string +} + +// NewUInt64 creates a new Key for uint64 values. +func NewUInt64(name, description string) *UInt64 { + return &UInt64{name: name, description: description} +} + +func (k *UInt64) Name() string { return k.name } +func (k *UInt64) Description() string { return k.description } + +func (k *UInt64) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendUint(buf, k.From(l), 10)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *UInt64) Of(v uint64) label.Label { return label.Of64(k, v) } + +// Get can be used to get a label for the key from a label.Map. +func (k *UInt64) Get(lm label.Map) uint64 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *UInt64) From(t label.Label) uint64 { return t.Unpack64() } + +// Float32 represents a key +type Float32 struct { + name string + description string +} + +// NewFloat32 creates a new Key for float32 values. +func NewFloat32(name, description string) *Float32 { + return &Float32{name: name, description: description} +} + +func (k *Float32) Name() string { return k.name } +func (k *Float32) Description() string { return k.description } + +func (k *Float32) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendFloat(buf, float64(k.From(l)), 'E', -1, 32)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Float32) Of(v float32) label.Label { + return label.Of64(k, uint64(math.Float32bits(v))) +} + +// Get can be used to get a label for the key from a label.Map. +func (k *Float32) Get(lm label.Map) float32 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Float32) From(t label.Label) float32 { + return math.Float32frombits(uint32(t.Unpack64())) +} + +// Float64 represents a key +type Float64 struct { + name string + description string +} + +// NewFloat64 creates a new Key for int64 values. +func NewFloat64(name, description string) *Float64 { + return &Float64{name: name, description: description} +} + +func (k *Float64) Name() string { return k.name } +func (k *Float64) Description() string { return k.description } + +func (k *Float64) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendFloat(buf, k.From(l), 'E', -1, 64)) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Float64) Of(v float64) label.Label { + return label.Of64(k, math.Float64bits(v)) +} + +// Get can be used to get a label for the key from a label.Map. +func (k *Float64) Get(lm label.Map) float64 { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return 0 +} + +// From can be used to get a value from a Label. +func (k *Float64) From(t label.Label) float64 { + return math.Float64frombits(t.Unpack64()) +} + +// String represents a key +type String struct { + name string + description string +} + +// NewString creates a new Key for int64 values. +func NewString(name, description string) *String { + return &String{name: name, description: description} +} + +func (k *String) Name() string { return k.name } +func (k *String) Description() string { return k.description } + +func (k *String) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendQuote(buf, k.From(l))) +} + +// Of creates a new Label with this key and the supplied value. +func (k *String) Of(v string) label.Label { return label.OfString(k, v) } + +// Get can be used to get a label for the key from a label.Map. +func (k *String) Get(lm label.Map) string { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return "" +} + +// From can be used to get a value from a Label. +func (k *String) From(t label.Label) string { return t.UnpackString() } + +// Boolean represents a key +type Boolean struct { + name string + description string +} + +// NewBoolean creates a new Key for bool values. +func NewBoolean(name, description string) *Boolean { + return &Boolean{name: name, description: description} +} + +func (k *Boolean) Name() string { return k.name } +func (k *Boolean) Description() string { return k.description } + +func (k *Boolean) Format(w io.Writer, buf []byte, l label.Label) { + w.Write(strconv.AppendBool(buf, k.From(l))) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Boolean) Of(v bool) label.Label { + if v { + return label.Of64(k, 1) + } + return label.Of64(k, 0) +} + +// Get can be used to get a label for the key from a label.Map. +func (k *Boolean) Get(lm label.Map) bool { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return false +} + +// From can be used to get a value from a Label. +func (k *Boolean) From(t label.Label) bool { return t.Unpack64() > 0 } + +// Error represents a key +type Error struct { + name string + description string +} + +// NewError creates a new Key for int64 values. +func NewError(name, description string) *Error { + return &Error{name: name, description: description} +} + +func (k *Error) Name() string { return k.name } +func (k *Error) Description() string { return k.description } + +func (k *Error) Format(w io.Writer, buf []byte, l label.Label) { + io.WriteString(w, k.From(l).Error()) +} + +// Of creates a new Label with this key and the supplied value. +func (k *Error) Of(v error) label.Label { return label.OfValue(k, v) } + +// Get can be used to get a label for the key from a label.Map. +func (k *Error) Get(lm label.Map) error { + if t := lm.Find(k); t.Valid() { + return k.From(t) + } + return nil +} + +// From can be used to get a value from a Label. +func (k *Error) From(t label.Label) error { + err, _ := t.UnpackValue().(error) + return err +} diff --git a/vendor/golang.org/x/tools/internal/event/keys/standard.go b/vendor/golang.org/x/tools/internal/event/keys/standard.go new file mode 100644 index 0000000..7e95866 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/keys/standard.go @@ -0,0 +1,22 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package keys + +var ( + // Msg is a key used to add message strings to label lists. + Msg = NewString("message", "a readable message") + // Label is a key used to indicate an event adds labels to the context. + Label = NewTag("label", "a label context marker") + // Start is used for things like traces that have a name. + Start = NewString("start", "span start") + // Metric is a key used to indicate an event records metrics. + End = NewTag("end", "a span end marker") + // Metric is a key used to indicate an event records metrics. + Detach = NewTag("detach", "a span detach marker") + // Err is a key used to add error values to label lists. + Err = NewError("error", "an error that occurred") + // Metric is a key used to indicate an event records metrics. + Metric = NewTag("metric", "a metric event marker") +) diff --git a/vendor/golang.org/x/tools/internal/event/label/label.go b/vendor/golang.org/x/tools/internal/event/label/label.go new file mode 100644 index 0000000..0f526e1 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/event/label/label.go @@ -0,0 +1,215 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package label + +import ( + "fmt" + "io" + "reflect" + "unsafe" +) + +// Key is used as the identity of a Label. +// Keys are intended to be compared by pointer only, the name should be unique +// for communicating with external systems, but it is not required or enforced. +type Key interface { + // Name returns the key name. + Name() string + // Description returns a string that can be used to describe the value. + Description() string + + // Format is used in formatting to append the value of the label to the + // supplied buffer. + // The formatter may use the supplied buf as a scratch area to avoid + // allocations. + Format(w io.Writer, buf []byte, l Label) +} + +// Label holds a key and value pair. +// It is normally used when passing around lists of labels. +type Label struct { + key Key + packed uint64 + untyped interface{} +} + +// Map is the interface to a collection of Labels indexed by key. +type Map interface { + // Find returns the label that matches the supplied key. + Find(key Key) Label +} + +// List is the interface to something that provides an iterable +// list of labels. +// Iteration should start from 0 and continue until Valid returns false. +type List interface { + // Valid returns true if the index is within range for the list. + // It does not imply the label at that index will itself be valid. + Valid(index int) bool + // Label returns the label at the given index. + Label(index int) Label +} + +// list implements LabelList for a list of Labels. +type list struct { + labels []Label +} + +// filter wraps a LabelList filtering out specific labels. +type filter struct { + keys []Key + underlying List +} + +// listMap implements LabelMap for a simple list of labels. +type listMap struct { + labels []Label +} + +// mapChain implements LabelMap for a list of underlying LabelMap. +type mapChain struct { + maps []Map +} + +// OfValue creates a new label from the key and value. +// This method is for implementing new key types, label creation should +// normally be done with the Of method of the key. +func OfValue(k Key, value interface{}) Label { return Label{key: k, untyped: value} } + +// UnpackValue assumes the label was built using LabelOfValue and returns the value +// that was passed to that constructor. +// This method is for implementing new key types, for type safety normal +// access should be done with the From method of the key. +func (t Label) UnpackValue() interface{} { return t.untyped } + +// Of64 creates a new label from a key and a uint64. This is often +// used for non uint64 values that can be packed into a uint64. +// This method is for implementing new key types, label creation should +// normally be done with the Of method of the key. +func Of64(k Key, v uint64) Label { return Label{key: k, packed: v} } + +// Unpack64 assumes the label was built using LabelOf64 and returns the value that +// was passed to that constructor. +// This method is for implementing new key types, for type safety normal +// access should be done with the From method of the key. +func (t Label) Unpack64() uint64 { return t.packed } + +type stringptr unsafe.Pointer + +// OfString creates a new label from a key and a string. +// This method is for implementing new key types, label creation should +// normally be done with the Of method of the key. +func OfString(k Key, v string) Label { + hdr := (*reflect.StringHeader)(unsafe.Pointer(&v)) + return Label{ + key: k, + packed: uint64(hdr.Len), + untyped: stringptr(hdr.Data), + } +} + +// UnpackString assumes the label was built using LabelOfString and returns the +// value that was passed to that constructor. +// This method is for implementing new key types, for type safety normal +// access should be done with the From method of the key. +func (t Label) UnpackString() string { + var v string + hdr := (*reflect.StringHeader)(unsafe.Pointer(&v)) + hdr.Data = uintptr(t.untyped.(stringptr)) + hdr.Len = int(t.packed) + return v +} + +// Valid returns true if the Label is a valid one (it has a key). +func (t Label) Valid() bool { return t.key != nil } + +// Key returns the key of this Label. +func (t Label) Key() Key { return t.key } + +// Format is used for debug printing of labels. +func (t Label) Format(f fmt.State, r rune) { + if !t.Valid() { + io.WriteString(f, `nil`) + return + } + io.WriteString(f, t.Key().Name()) + io.WriteString(f, "=") + var buf [128]byte + t.Key().Format(f, buf[:0], t) +} + +func (l *list) Valid(index int) bool { + return index >= 0 && index < len(l.labels) +} + +func (l *list) Label(index int) Label { + return l.labels[index] +} + +func (f *filter) Valid(index int) bool { + return f.underlying.Valid(index) +} + +func (f *filter) Label(index int) Label { + l := f.underlying.Label(index) + for _, f := range f.keys { + if l.Key() == f { + return Label{} + } + } + return l +} + +func (lm listMap) Find(key Key) Label { + for _, l := range lm.labels { + if l.Key() == key { + return l + } + } + return Label{} +} + +func (c mapChain) Find(key Key) Label { + for _, src := range c.maps { + l := src.Find(key) + if l.Valid() { + return l + } + } + return Label{} +} + +var emptyList = &list{} + +func NewList(labels ...Label) List { + if len(labels) == 0 { + return emptyList + } + return &list{labels: labels} +} + +func Filter(l List, keys ...Key) List { + if len(keys) == 0 { + return l + } + return &filter{keys: keys, underlying: l} +} + +func NewMap(labels ...Label) Map { + return listMap{labels: labels} +} + +func MergeMaps(srcs ...Map) Map { + var nonNil []Map + for _, src := range srcs { + if src != nil { + nonNil = append(nonNil, src) + } + } + if len(nonNil) == 1 { + return nonNil[0] + } + return mapChain{maps: nonNil} +} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go deleted file mode 100644 index 7219c8e..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go +++ /dev/null @@ -1,196 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package fastwalk provides a faster version of filepath.Walk for file system -// scanning tools. -package fastwalk - -import ( - "errors" - "os" - "path/filepath" - "runtime" - "sync" -) - -// TraverseLink is used as a return value from WalkFuncs to indicate that the -// symlink named in the call may be traversed. -var TraverseLink = errors.New("fastwalk: traverse symlink, assuming target is a directory") - -// SkipFiles is a used as a return value from WalkFuncs to indicate that the -// callback should not be called for any other files in the current directory. -// Child directories will still be traversed. -var SkipFiles = errors.New("fastwalk: skip remaining files in directory") - -// Walk is a faster implementation of filepath.Walk. -// -// filepath.Walk's design necessarily calls os.Lstat on each file, -// even if the caller needs less info. -// Many tools need only the type of each file. -// On some platforms, this information is provided directly by the readdir -// system call, avoiding the need to stat each file individually. -// fastwalk_unix.go contains a fork of the syscall routines. -// -// See golang.org/issue/16399 -// -// Walk walks the file tree rooted at root, calling walkFn for -// each file or directory in the tree, including root. -// -// If fastWalk returns filepath.SkipDir, the directory is skipped. -// -// Unlike filepath.Walk: -// * file stat calls must be done by the user. -// The only provided metadata is the file type, which does not include -// any permission bits. -// * multiple goroutines stat the filesystem concurrently. The provided -// walkFn must be safe for concurrent use. -// * fastWalk can follow symlinks if walkFn returns the TraverseLink -// sentinel error. It is the walkFn's responsibility to prevent -// fastWalk from going into symlink cycles. -func Walk(root string, walkFn func(path string, typ os.FileMode) error) error { - // TODO(bradfitz): make numWorkers configurable? We used a - // minimum of 4 to give the kernel more info about multiple - // things we want, in hopes its I/O scheduling can take - // advantage of that. Hopefully most are in cache. Maybe 4 is - // even too low of a minimum. Profile more. - numWorkers := 4 - if n := runtime.NumCPU(); n > numWorkers { - numWorkers = n - } - - // Make sure to wait for all workers to finish, otherwise - // walkFn could still be called after returning. This Wait call - // runs after close(e.donec) below. - var wg sync.WaitGroup - defer wg.Wait() - - w := &walker{ - fn: walkFn, - enqueuec: make(chan walkItem, numWorkers), // buffered for performance - workc: make(chan walkItem, numWorkers), // buffered for performance - donec: make(chan struct{}), - - // buffered for correctness & not leaking goroutines: - resc: make(chan error, numWorkers), - } - defer close(w.donec) - - for i := 0; i < numWorkers; i++ { - wg.Add(1) - go w.doWork(&wg) - } - todo := []walkItem{{dir: root}} - out := 0 - for { - workc := w.workc - var workItem walkItem - if len(todo) == 0 { - workc = nil - } else { - workItem = todo[len(todo)-1] - } - select { - case workc <- workItem: - todo = todo[:len(todo)-1] - out++ - case it := <-w.enqueuec: - todo = append(todo, it) - case err := <-w.resc: - out-- - if err != nil { - return err - } - if out == 0 && len(todo) == 0 { - // It's safe to quit here, as long as the buffered - // enqueue channel isn't also readable, which might - // happen if the worker sends both another unit of - // work and its result before the other select was - // scheduled and both w.resc and w.enqueuec were - // readable. - select { - case it := <-w.enqueuec: - todo = append(todo, it) - default: - return nil - } - } - } - } -} - -// doWork reads directories as instructed (via workc) and runs the -// user's callback function. -func (w *walker) doWork(wg *sync.WaitGroup) { - defer wg.Done() - for { - select { - case <-w.donec: - return - case it := <-w.workc: - select { - case <-w.donec: - return - case w.resc <- w.walk(it.dir, !it.callbackDone): - } - } - } -} - -type walker struct { - fn func(path string, typ os.FileMode) error - - donec chan struct{} // closed on fastWalk's return - workc chan walkItem // to workers - enqueuec chan walkItem // from workers - resc chan error // from workers -} - -type walkItem struct { - dir string - callbackDone bool // callback already called; don't do it again -} - -func (w *walker) enqueue(it walkItem) { - select { - case w.enqueuec <- it: - case <-w.donec: - } -} - -func (w *walker) onDirEnt(dirName, baseName string, typ os.FileMode) error { - joined := dirName + string(os.PathSeparator) + baseName - if typ == os.ModeDir { - w.enqueue(walkItem{dir: joined}) - return nil - } - - err := w.fn(joined, typ) - if typ == os.ModeSymlink { - if err == TraverseLink { - // Set callbackDone so we don't call it twice for both the - // symlink-as-symlink and the symlink-as-directory later: - w.enqueue(walkItem{dir: joined, callbackDone: true}) - return nil - } - if err == filepath.SkipDir { - // Permit SkipDir on symlinks too. - return nil - } - } - return err -} - -func (w *walker) walk(root string, runUserCallback bool) error { - if runUserCallback { - err := w.fn(root, os.ModeDir) - if err == filepath.SkipDir { - return nil - } - if err != nil { - return err - } - } - - return readDir(root, w.onDirEnt) -} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go deleted file mode 100644 index ccffec5..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go +++ /dev/null @@ -1,13 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build freebsd openbsd netbsd - -package fastwalk - -import "syscall" - -func direntInode(dirent *syscall.Dirent) uint64 { - return uint64(dirent.Fileno) -} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go deleted file mode 100644 index ab7fbc0..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go +++ /dev/null @@ -1,14 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build linux darwin -// +build !appengine - -package fastwalk - -import "syscall" - -func direntInode(dirent *syscall.Dirent) uint64 { - return uint64(dirent.Ino) -} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go deleted file mode 100644 index a3b26a7..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go +++ /dev/null @@ -1,13 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin freebsd openbsd netbsd - -package fastwalk - -import "syscall" - -func direntNamlen(dirent *syscall.Dirent) uint64 { - return uint64(dirent.Namlen) -} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go deleted file mode 100644 index e880d35..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build linux -// +build !appengine - -package fastwalk - -import ( - "bytes" - "syscall" - "unsafe" -) - -func direntNamlen(dirent *syscall.Dirent) uint64 { - const fixedHdr = uint16(unsafe.Offsetof(syscall.Dirent{}.Name)) - nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0])) - const nameBufLen = uint16(len(nameBuf)) - limit := dirent.Reclen - fixedHdr - if limit > nameBufLen { - limit = nameBufLen - } - nameLen := bytes.IndexByte(nameBuf[:limit], 0) - if nameLen < 0 { - panic("failed to find terminating 0 byte in dirent") - } - return uint64(nameLen) -} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go deleted file mode 100644 index a906b87..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go +++ /dev/null @@ -1,37 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build appengine !linux,!darwin,!freebsd,!openbsd,!netbsd - -package fastwalk - -import ( - "io/ioutil" - "os" -) - -// readDir calls fn for each directory entry in dirName. -// It does not descend into directories or follow symlinks. -// If fn returns a non-nil error, readDir returns with that error -// immediately. -func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error { - fis, err := ioutil.ReadDir(dirName) - if err != nil { - return err - } - skipFiles := false - for _, fi := range fis { - if fi.Mode().IsRegular() && skipFiles { - continue - } - if err := fn(dirName, fi.Name(), fi.Mode()&os.ModeType); err != nil { - if err == SkipFiles { - skipFiles = true - continue - } - return err - } - } - return nil -} diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go deleted file mode 100644 index 3369b1a..0000000 --- a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright 2016 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build linux darwin freebsd openbsd netbsd -// +build !appengine - -package fastwalk - -import ( - "fmt" - "os" - "syscall" - "unsafe" -) - -const blockSize = 8 << 10 - -// unknownFileMode is a sentinel (and bogus) os.FileMode -// value used to represent a syscall.DT_UNKNOWN Dirent.Type. -const unknownFileMode os.FileMode = os.ModeNamedPipe | os.ModeSocket | os.ModeDevice - -func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error { - fd, err := syscall.Open(dirName, 0, 0) - if err != nil { - return &os.PathError{Op: "open", Path: dirName, Err: err} - } - defer syscall.Close(fd) - - // The buffer must be at least a block long. - buf := make([]byte, blockSize) // stack-allocated; doesn't escape - bufp := 0 // starting read position in buf - nbuf := 0 // end valid data in buf - skipFiles := false - for { - if bufp >= nbuf { - bufp = 0 - nbuf, err = syscall.ReadDirent(fd, buf) - if err != nil { - return os.NewSyscallError("readdirent", err) - } - if nbuf <= 0 { - return nil - } - } - consumed, name, typ := parseDirEnt(buf[bufp:nbuf]) - bufp += consumed - if name == "" || name == "." || name == ".." { - continue - } - // Fallback for filesystems (like old XFS) that don't - // support Dirent.Type and have DT_UNKNOWN (0) there - // instead. - if typ == unknownFileMode { - fi, err := os.Lstat(dirName + "/" + name) - if err != nil { - // It got deleted in the meantime. - if os.IsNotExist(err) { - continue - } - return err - } - typ = fi.Mode() & os.ModeType - } - if skipFiles && typ.IsRegular() { - continue - } - if err := fn(dirName, name, typ); err != nil { - if err == SkipFiles { - skipFiles = true - continue - } - return err - } - } -} - -func parseDirEnt(buf []byte) (consumed int, name string, typ os.FileMode) { - // golang.org/issue/15653 - dirent := (*syscall.Dirent)(unsafe.Pointer(&buf[0])) - if v := unsafe.Offsetof(dirent.Reclen) + unsafe.Sizeof(dirent.Reclen); uintptr(len(buf)) < v { - panic(fmt.Sprintf("buf size of %d smaller than dirent header size %d", len(buf), v)) - } - if len(buf) < int(dirent.Reclen) { - panic(fmt.Sprintf("buf size %d < record length %d", len(buf), dirent.Reclen)) - } - consumed = int(dirent.Reclen) - if direntInode(dirent) == 0 { // File absent in directory. - return - } - switch dirent.Type { - case syscall.DT_REG: - typ = 0 - case syscall.DT_DIR: - typ = os.ModeDir - case syscall.DT_LNK: - typ = os.ModeSymlink - case syscall.DT_BLK: - typ = os.ModeDevice - case syscall.DT_FIFO: - typ = os.ModeNamedPipe - case syscall.DT_SOCK: - typ = os.ModeSocket - case syscall.DT_UNKNOWN: - typ = unknownFileMode - default: - // Skip weird things. - // It's probably a DT_WHT (http://lwn.net/Articles/325369/) - // or something. Revisit if/when this package is moved outside - // of goimports. goimports only cares about regular files, - // symlinks, and directories. - return - } - - nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0])) - nameLen := direntNamlen(dirent) - - // Special cases for common things: - if nameLen == 1 && nameBuf[0] == '.' { - name = "." - } else if nameLen == 2 && nameBuf[0] == '.' && nameBuf[1] == '.' { - name = ".." - } else { - name = string(nameBuf[:nameLen]) - } - return -} diff --git a/vendor/golang.org/x/tools/internal/gocommand/invoke.go b/vendor/golang.org/x/tools/internal/gocommand/invoke.go new file mode 100644 index 0000000..67256dc --- /dev/null +++ b/vendor/golang.org/x/tools/internal/gocommand/invoke.go @@ -0,0 +1,283 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package gocommand is a helper for calling the go command. +package gocommand + +import ( + "bytes" + "context" + "fmt" + "io" + "os" + "regexp" + "strconv" + "strings" + "sync" + "time" + + exec "golang.org/x/sys/execabs" + + "golang.org/x/tools/internal/event" +) + +// An Runner will run go command invocations and serialize +// them if it sees a concurrency error. +type Runner struct { + // once guards the runner initialization. + once sync.Once + + // inFlight tracks available workers. + inFlight chan struct{} + + // serialized guards the ability to run a go command serially, + // to avoid deadlocks when claiming workers. + serialized chan struct{} +} + +const maxInFlight = 10 + +func (runner *Runner) initialize() { + runner.once.Do(func() { + runner.inFlight = make(chan struct{}, maxInFlight) + runner.serialized = make(chan struct{}, 1) + }) +} + +// 1.13: go: updates to go.mod needed, but contents have changed +// 1.14: go: updating go.mod: existing contents have changed since last read +var modConcurrencyError = regexp.MustCompile(`go:.*go.mod.*contents have changed`) + +// Run is a convenience wrapper around RunRaw. +// It returns only stdout and a "friendly" error. +func (runner *Runner) Run(ctx context.Context, inv Invocation) (*bytes.Buffer, error) { + stdout, _, friendly, _ := runner.RunRaw(ctx, inv) + return stdout, friendly +} + +// RunPiped runs the invocation serially, always waiting for any concurrent +// invocations to complete first. +func (runner *Runner) RunPiped(ctx context.Context, inv Invocation, stdout, stderr io.Writer) error { + _, err := runner.runPiped(ctx, inv, stdout, stderr) + return err +} + +// RunRaw runs the invocation, serializing requests only if they fight over +// go.mod changes. +func (runner *Runner) RunRaw(ctx context.Context, inv Invocation) (*bytes.Buffer, *bytes.Buffer, error, error) { + // Make sure the runner is always initialized. + runner.initialize() + + // First, try to run the go command concurrently. + stdout, stderr, friendlyErr, err := runner.runConcurrent(ctx, inv) + + // If we encounter a load concurrency error, we need to retry serially. + if friendlyErr == nil || !modConcurrencyError.MatchString(friendlyErr.Error()) { + return stdout, stderr, friendlyErr, err + } + event.Error(ctx, "Load concurrency error, will retry serially", err) + + // Run serially by calling runPiped. + stdout.Reset() + stderr.Reset() + friendlyErr, err = runner.runPiped(ctx, inv, stdout, stderr) + return stdout, stderr, friendlyErr, err +} + +func (runner *Runner) runConcurrent(ctx context.Context, inv Invocation) (*bytes.Buffer, *bytes.Buffer, error, error) { + // Wait for 1 worker to become available. + select { + case <-ctx.Done(): + return nil, nil, nil, ctx.Err() + case runner.inFlight <- struct{}{}: + defer func() { <-runner.inFlight }() + } + + stdout, stderr := &bytes.Buffer{}, &bytes.Buffer{} + friendlyErr, err := inv.runWithFriendlyError(ctx, stdout, stderr) + return stdout, stderr, friendlyErr, err +} + +func (runner *Runner) runPiped(ctx context.Context, inv Invocation, stdout, stderr io.Writer) (error, error) { + // Make sure the runner is always initialized. + runner.initialize() + + // Acquire the serialization lock. This avoids deadlocks between two + // runPiped commands. + select { + case <-ctx.Done(): + return nil, ctx.Err() + case runner.serialized <- struct{}{}: + defer func() { <-runner.serialized }() + } + + // Wait for all in-progress go commands to return before proceeding, + // to avoid load concurrency errors. + for i := 0; i < maxInFlight; i++ { + select { + case <-ctx.Done(): + return nil, ctx.Err() + case runner.inFlight <- struct{}{}: + // Make sure we always "return" any workers we took. + defer func() { <-runner.inFlight }() + } + } + + return inv.runWithFriendlyError(ctx, stdout, stderr) +} + +// An Invocation represents a call to the go command. +type Invocation struct { + Verb string + Args []string + BuildFlags []string + + // If ModFlag is set, the go command is invoked with -mod=ModFlag. + ModFlag string + + // If ModFile is set, the go command is invoked with -modfile=ModFile. + ModFile string + + // If Overlay is set, the go command is invoked with -overlay=Overlay. + Overlay string + + // If CleanEnv is set, the invocation will run only with the environment + // in Env, not starting with os.Environ. + CleanEnv bool + Env []string + WorkingDir string + Logf func(format string, args ...interface{}) +} + +func (i *Invocation) runWithFriendlyError(ctx context.Context, stdout, stderr io.Writer) (friendlyError error, rawError error) { + rawError = i.run(ctx, stdout, stderr) + if rawError != nil { + friendlyError = rawError + // Check for 'go' executable not being found. + if ee, ok := rawError.(*exec.Error); ok && ee.Err == exec.ErrNotFound { + friendlyError = fmt.Errorf("go command required, not found: %v", ee) + } + if ctx.Err() != nil { + friendlyError = ctx.Err() + } + friendlyError = fmt.Errorf("err: %v: stderr: %s", friendlyError, stderr) + } + return +} + +func (i *Invocation) run(ctx context.Context, stdout, stderr io.Writer) error { + log := i.Logf + if log == nil { + log = func(string, ...interface{}) {} + } + + goArgs := []string{i.Verb} + + appendModFile := func() { + if i.ModFile != "" { + goArgs = append(goArgs, "-modfile="+i.ModFile) + } + } + appendModFlag := func() { + if i.ModFlag != "" { + goArgs = append(goArgs, "-mod="+i.ModFlag) + } + } + appendOverlayFlag := func() { + if i.Overlay != "" { + goArgs = append(goArgs, "-overlay="+i.Overlay) + } + } + + switch i.Verb { + case "env", "version": + goArgs = append(goArgs, i.Args...) + case "mod": + // mod needs the sub-verb before flags. + goArgs = append(goArgs, i.Args[0]) + appendModFile() + goArgs = append(goArgs, i.Args[1:]...) + case "get": + goArgs = append(goArgs, i.BuildFlags...) + appendModFile() + goArgs = append(goArgs, i.Args...) + + default: // notably list and build. + goArgs = append(goArgs, i.BuildFlags...) + appendModFile() + appendModFlag() + appendOverlayFlag() + goArgs = append(goArgs, i.Args...) + } + cmd := exec.Command("go", goArgs...) + cmd.Stdout = stdout + cmd.Stderr = stderr + // On darwin the cwd gets resolved to the real path, which breaks anything that + // expects the working directory to keep the original path, including the + // go command when dealing with modules. + // The Go stdlib has a special feature where if the cwd and the PWD are the + // same node then it trusts the PWD, so by setting it in the env for the child + // process we fix up all the paths returned by the go command. + if !i.CleanEnv { + cmd.Env = os.Environ() + } + cmd.Env = append(cmd.Env, i.Env...) + if i.WorkingDir != "" { + cmd.Env = append(cmd.Env, "PWD="+i.WorkingDir) + cmd.Dir = i.WorkingDir + } + defer func(start time.Time) { log("%s for %v", time.Since(start), cmdDebugStr(cmd)) }(time.Now()) + + return runCmdContext(ctx, cmd) +} + +// runCmdContext is like exec.CommandContext except it sends os.Interrupt +// before os.Kill. +func runCmdContext(ctx context.Context, cmd *exec.Cmd) error { + if err := cmd.Start(); err != nil { + return err + } + resChan := make(chan error, 1) + go func() { + resChan <- cmd.Wait() + }() + + select { + case err := <-resChan: + return err + case <-ctx.Done(): + } + // Cancelled. Interrupt and see if it ends voluntarily. + cmd.Process.Signal(os.Interrupt) + select { + case err := <-resChan: + return err + case <-time.After(time.Second): + } + // Didn't shut down in response to interrupt. Kill it hard. + cmd.Process.Kill() + return <-resChan +} + +func cmdDebugStr(cmd *exec.Cmd) string { + env := make(map[string]string) + for _, kv := range cmd.Env { + split := strings.SplitN(kv, "=", 2) + if len(split) == 2 { + k, v := split[0], split[1] + env[k] = v + } + } + + var args []string + for _, arg := range cmd.Args { + quoted := strconv.Quote(arg) + if quoted[1:len(quoted)-1] != arg || strings.Contains(arg, " ") { + args = append(args, quoted) + } else { + args = append(args, arg) + } + } + return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], strings.Join(args, " ")) +} diff --git a/vendor/golang.org/x/tools/internal/gocommand/vendor.go b/vendor/golang.org/x/tools/internal/gocommand/vendor.go new file mode 100644 index 0000000..2d3d408 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/gocommand/vendor.go @@ -0,0 +1,109 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package gocommand + +import ( + "bytes" + "context" + "fmt" + "os" + "path/filepath" + "regexp" + "strings" + "time" + + "golang.org/x/mod/semver" +) + +// ModuleJSON holds information about a module. +type ModuleJSON struct { + Path string // module path + Version string // module version + Versions []string // available module versions (with -versions) + Replace *ModuleJSON // replaced by this module + Time *time.Time // time version was created + Update *ModuleJSON // available update, if any (with -u) + Main bool // is this the main module? + Indirect bool // is this module only an indirect dependency of main module? + Dir string // directory holding files for this module, if any + GoMod string // path to go.mod file used when loading this module, if any + GoVersion string // go version used in module +} + +var modFlagRegexp = regexp.MustCompile(`-mod[ =](\w+)`) + +// VendorEnabled reports whether vendoring is enabled. It takes a *Runner to execute Go commands +// with the supplied context.Context and Invocation. The Invocation can contain pre-defined fields, +// of which only Verb and Args are modified to run the appropriate Go command. +// Inspired by setDefaultBuildMod in modload/init.go +func VendorEnabled(ctx context.Context, inv Invocation, r *Runner) (bool, *ModuleJSON, error) { + mainMod, go114, err := getMainModuleAnd114(ctx, inv, r) + if err != nil { + return false, nil, err + } + + // We check the GOFLAGS to see if there is anything overridden or not. + inv.Verb = "env" + inv.Args = []string{"GOFLAGS"} + stdout, err := r.Run(ctx, inv) + if err != nil { + return false, nil, err + } + goflags := string(bytes.TrimSpace(stdout.Bytes())) + matches := modFlagRegexp.FindStringSubmatch(goflags) + var modFlag string + if len(matches) != 0 { + modFlag = matches[1] + } + // Don't override an explicit '-mod=' argument. + if modFlag == "vendor" { + return true, mainMod, nil + } else if modFlag != "" { + return false, nil, nil + } + if mainMod == nil || !go114 { + return false, nil, nil + } + // Check 1.14's automatic vendor mode. + if fi, err := os.Stat(filepath.Join(mainMod.Dir, "vendor")); err == nil && fi.IsDir() { + if mainMod.GoVersion != "" && semver.Compare("v"+mainMod.GoVersion, "v1.14") >= 0 { + // The Go version is at least 1.14, and a vendor directory exists. + // Set -mod=vendor by default. + return true, mainMod, nil + } + } + return false, nil, nil +} + +// getMainModuleAnd114 gets one of the main modules' information and whether the +// go command in use is 1.14+. This is the information needed to figure out +// if vendoring should be enabled. +func getMainModuleAnd114(ctx context.Context, inv Invocation, r *Runner) (*ModuleJSON, bool, error) { + const format = `{{.Path}} +{{.Dir}} +{{.GoMod}} +{{.GoVersion}} +{{range context.ReleaseTags}}{{if eq . "go1.14"}}{{.}}{{end}}{{end}} +` + inv.Verb = "list" + inv.Args = []string{"-m", "-f", format} + stdout, err := r.Run(ctx, inv) + if err != nil { + return nil, false, err + } + + lines := strings.Split(stdout.String(), "\n") + if len(lines) < 5 { + return nil, false, fmt.Errorf("unexpected stdout: %q", stdout.String()) + } + mod := &ModuleJSON{ + Path: lines[0], + Dir: lines[1], + GoMod: lines[2], + GoVersion: lines[3], + Main: true, + } + return mod, lines[4] == "go1.14", nil +} diff --git a/vendor/golang.org/x/tools/internal/gocommand/version.go b/vendor/golang.org/x/tools/internal/gocommand/version.go new file mode 100644 index 0000000..7130436 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/gocommand/version.go @@ -0,0 +1,51 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package gocommand + +import ( + "context" + "fmt" + "strings" +) + +// GoVersion checks the go version by running "go list" with modules off. +// It returns the X in Go 1.X. +func GoVersion(ctx context.Context, inv Invocation, r *Runner) (int, error) { + inv.Verb = "list" + inv.Args = []string{"-e", "-f", `{{context.ReleaseTags}}`, `--`, `unsafe`} + inv.Env = append(append([]string{}, inv.Env...), "GO111MODULE=off") + // Unset any unneeded flags, and remove them from BuildFlags, if they're + // present. + inv.ModFile = "" + inv.ModFlag = "" + var buildFlags []string + for _, flag := range inv.BuildFlags { + // Flags can be prefixed by one or two dashes. + f := strings.TrimPrefix(strings.TrimPrefix(flag, "-"), "-") + if strings.HasPrefix(f, "mod=") || strings.HasPrefix(f, "modfile=") { + continue + } + buildFlags = append(buildFlags, flag) + } + inv.BuildFlags = buildFlags + stdoutBytes, err := r.Run(ctx, inv) + if err != nil { + return 0, err + } + stdout := stdoutBytes.String() + if len(stdout) < 3 { + return 0, fmt.Errorf("bad ReleaseTags output: %q", stdout) + } + // Split up "[go1.1 go1.15]" + tags := strings.Fields(stdout[1 : len(stdout)-2]) + for i := len(tags) - 1; i >= 0; i-- { + var version int + if _, err := fmt.Sscanf(tags[i], "go1.%d", &version); err != nil { + continue + } + return version, nil + } + return 0, fmt.Errorf("no parseable ReleaseTags in %v", tags) +} diff --git a/vendor/golang.org/x/tools/internal/gopathwalk/walk.go b/vendor/golang.org/x/tools/internal/gopathwalk/walk.go deleted file mode 100644 index 9a61bdb..0000000 --- a/vendor/golang.org/x/tools/internal/gopathwalk/walk.go +++ /dev/null @@ -1,270 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package gopathwalk is like filepath.Walk but specialized for finding Go -// packages, particularly in $GOPATH and $GOROOT. -package gopathwalk - -import ( - "bufio" - "bytes" - "fmt" - "go/build" - "io/ioutil" - "log" - "os" - "path/filepath" - "strings" - "time" - - "golang.org/x/tools/internal/fastwalk" -) - -// Options controls the behavior of a Walk call. -type Options struct { - Debug bool // Enable debug logging - ModulesEnabled bool // Search module caches. Also disables legacy goimports ignore rules. -} - -// RootType indicates the type of a Root. -type RootType int - -const ( - RootUnknown RootType = iota - RootGOROOT - RootGOPATH - RootCurrentModule - RootModuleCache - RootOther -) - -// A Root is a starting point for a Walk. -type Root struct { - Path string - Type RootType -} - -// SrcDirsRoots returns the roots from build.Default.SrcDirs(). Not modules-compatible. -func SrcDirsRoots(ctx *build.Context) []Root { - var roots []Root - roots = append(roots, Root{filepath.Join(ctx.GOROOT, "src"), RootGOROOT}) - for _, p := range filepath.SplitList(ctx.GOPATH) { - roots = append(roots, Root{filepath.Join(p, "src"), RootGOPATH}) - } - return roots -} - -// Walk walks Go source directories ($GOROOT, $GOPATH, etc) to find packages. -// For each package found, add will be called (concurrently) with the absolute -// paths of the containing source directory and the package directory. -// add will be called concurrently. -func Walk(roots []Root, add func(root Root, dir string), opts Options) { - WalkSkip(roots, add, func(Root, string) bool { return false }, opts) -} - -// WalkSkip walks Go source directories ($GOROOT, $GOPATH, etc) to find packages. -// For each package found, add will be called (concurrently) with the absolute -// paths of the containing source directory and the package directory. -// For each directory that will be scanned, skip will be called (concurrently) -// with the absolute paths of the containing source directory and the directory. -// If skip returns false on a directory it will be processed. -// add will be called concurrently. -// skip will be called concurrently. -func WalkSkip(roots []Root, add func(root Root, dir string), skip func(root Root, dir string) bool, opts Options) { - for _, root := range roots { - walkDir(root, add, skip, opts) - } -} - -func walkDir(root Root, add func(Root, string), skip func(root Root, dir string) bool, opts Options) { - if _, err := os.Stat(root.Path); os.IsNotExist(err) { - if opts.Debug { - log.Printf("skipping nonexistent directory: %v", root.Path) - } - return - } - start := time.Now() - if opts.Debug { - log.Printf("gopathwalk: scanning %s", root.Path) - } - w := &walker{ - root: root, - add: add, - skip: skip, - opts: opts, - } - w.init() - if err := fastwalk.Walk(root.Path, w.walk); err != nil { - log.Printf("gopathwalk: scanning directory %v: %v", root.Path, err) - } - - if opts.Debug { - log.Printf("gopathwalk: scanned %s in %v", root.Path, time.Since(start)) - } -} - -// walker is the callback for fastwalk.Walk. -type walker struct { - root Root // The source directory to scan. - add func(Root, string) // The callback that will be invoked for every possible Go package dir. - skip func(Root, string) bool // The callback that will be invoked for every dir. dir is skipped if it returns true. - opts Options // Options passed to Walk by the user. - - ignoredDirs []os.FileInfo // The ignored directories, loaded from .goimportsignore files. -} - -// init initializes the walker based on its Options. -func (w *walker) init() { - var ignoredPaths []string - if w.root.Type == RootModuleCache { - ignoredPaths = []string{"cache"} - } - if !w.opts.ModulesEnabled && w.root.Type == RootGOPATH { - ignoredPaths = w.getIgnoredDirs(w.root.Path) - ignoredPaths = append(ignoredPaths, "v", "mod") - } - - for _, p := range ignoredPaths { - full := filepath.Join(w.root.Path, p) - if fi, err := os.Stat(full); err == nil { - w.ignoredDirs = append(w.ignoredDirs, fi) - if w.opts.Debug { - log.Printf("Directory added to ignore list: %s", full) - } - } else if w.opts.Debug { - log.Printf("Error statting ignored directory: %v", err) - } - } -} - -// getIgnoredDirs reads an optional config file at /.goimportsignore -// of relative directories to ignore when scanning for go files. -// The provided path is one of the $GOPATH entries with "src" appended. -func (w *walker) getIgnoredDirs(path string) []string { - file := filepath.Join(path, ".goimportsignore") - slurp, err := ioutil.ReadFile(file) - if w.opts.Debug { - if err != nil { - log.Print(err) - } else { - log.Printf("Read %s", file) - } - } - if err != nil { - return nil - } - - var ignoredDirs []string - bs := bufio.NewScanner(bytes.NewReader(slurp)) - for bs.Scan() { - line := strings.TrimSpace(bs.Text()) - if line == "" || strings.HasPrefix(line, "#") { - continue - } - ignoredDirs = append(ignoredDirs, line) - } - return ignoredDirs -} - -func (w *walker) shouldSkipDir(fi os.FileInfo, dir string) bool { - for _, ignoredDir := range w.ignoredDirs { - if os.SameFile(fi, ignoredDir) { - return true - } - } - if w.skip != nil { - // Check with the user specified callback. - return w.skip(w.root, dir) - } - return false -} - -func (w *walker) walk(path string, typ os.FileMode) error { - dir := filepath.Dir(path) - if typ.IsRegular() { - if dir == w.root.Path && (w.root.Type == RootGOROOT || w.root.Type == RootGOPATH) { - // Doesn't make sense to have regular files - // directly in your $GOPATH/src or $GOROOT/src. - return fastwalk.SkipFiles - } - if !strings.HasSuffix(path, ".go") { - return nil - } - - w.add(w.root, dir) - return fastwalk.SkipFiles - } - if typ == os.ModeDir { - base := filepath.Base(path) - if base == "" || base[0] == '.' || base[0] == '_' || - base == "testdata" || - (w.root.Type == RootGOROOT && w.opts.ModulesEnabled && base == "vendor") || - (!w.opts.ModulesEnabled && base == "node_modules") { - return filepath.SkipDir - } - fi, err := os.Lstat(path) - if err == nil && w.shouldSkipDir(fi, path) { - return filepath.SkipDir - } - return nil - } - if typ == os.ModeSymlink { - base := filepath.Base(path) - if strings.HasPrefix(base, ".#") { - // Emacs noise. - return nil - } - fi, err := os.Lstat(path) - if err != nil { - // Just ignore it. - return nil - } - if w.shouldTraverse(dir, fi) { - return fastwalk.TraverseLink - } - } - return nil -} - -// shouldTraverse reports whether the symlink fi, found in dir, -// should be followed. It makes sure symlinks were never visited -// before to avoid symlink loops. -func (w *walker) shouldTraverse(dir string, fi os.FileInfo) bool { - path := filepath.Join(dir, fi.Name()) - target, err := filepath.EvalSymlinks(path) - if err != nil { - return false - } - ts, err := os.Stat(target) - if err != nil { - fmt.Fprintln(os.Stderr, err) - return false - } - if !ts.IsDir() { - return false - } - if w.shouldSkipDir(ts, dir) { - return false - } - // Check for symlink loops by statting each directory component - // and seeing if any are the same file as ts. - for { - parent := filepath.Dir(path) - if parent == path { - // Made it to the root without seeing a cycle. - // Use this symlink. - return true - } - parentInfo, err := os.Stat(parent) - if err != nil { - return false - } - if os.SameFile(ts, parentInfo) { - // Cycle. Don't traverse. - return false - } - path = parent - } - -} diff --git a/vendor/golang.org/x/tools/internal/packagesinternal/packages.go b/vendor/golang.org/x/tools/internal/packagesinternal/packages.go new file mode 100644 index 0000000..d9950b1 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/packagesinternal/packages.go @@ -0,0 +1,30 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package packagesinternal exposes internal-only fields from go/packages. +package packagesinternal + +import ( + "golang.org/x/tools/internal/gocommand" +) + +var GetForTest = func(p interface{}) string { return "" } +var GetDepsErrors = func(p interface{}) []*PackageError { return nil } + +type PackageError struct { + ImportStack []string // shortest path from package named on command line to this one + Pos string // position of error (if present, file:line:col) + Err string // the error itself +} + +var GetGoCmdRunner = func(config interface{}) *gocommand.Runner { return nil } + +var SetGoCmdRunner = func(config interface{}, runner *gocommand.Runner) {} + +var TypecheckCgo int +var DepsErrors int // must be set as a LoadMode to call GetDepsErrors +var ForTest int // must be set as a LoadMode to call GetForTest + +var SetModFlag = func(config interface{}, value string) {} +var SetModFile = func(config interface{}, value string) {} diff --git a/vendor/golang.org/x/tools/internal/span/parse.go b/vendor/golang.org/x/tools/internal/span/parse.go deleted file mode 100644 index b3f268a..0000000 --- a/vendor/golang.org/x/tools/internal/span/parse.go +++ /dev/null @@ -1,100 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package span - -import ( - "strconv" - "strings" - "unicode/utf8" -) - -// Parse returns the location represented by the input. -// All inputs are valid locations, as they can always be a pure filename. -// The returned span will be normalized, and thus if printed may produce a -// different string. -func Parse(input string) Span { - // :0:0#0-0:0#0 - valid := input - var hold, offset int - hadCol := false - suf := rstripSuffix(input) - if suf.sep == "#" { - offset = suf.num - suf = rstripSuffix(suf.remains) - } - if suf.sep == ":" { - valid = suf.remains - hold = suf.num - hadCol = true - suf = rstripSuffix(suf.remains) - } - switch { - case suf.sep == ":": - return New(NewURI(suf.remains), NewPoint(suf.num, hold, offset), Point{}) - case suf.sep == "-": - // we have a span, fall out of the case to continue - default: - // separator not valid, rewind to either the : or the start - return New(NewURI(valid), NewPoint(hold, 0, offset), Point{}) - } - // only the span form can get here - // at this point we still don't know what the numbers we have mean - // if have not yet seen a : then we might have either a line or a column depending - // on whether start has a column or not - // we build an end point and will fix it later if needed - end := NewPoint(suf.num, hold, offset) - hold, offset = 0, 0 - suf = rstripSuffix(suf.remains) - if suf.sep == "#" { - offset = suf.num - suf = rstripSuffix(suf.remains) - } - if suf.sep != ":" { - // turns out we don't have a span after all, rewind - return New(NewURI(valid), end, Point{}) - } - valid = suf.remains - hold = suf.num - suf = rstripSuffix(suf.remains) - if suf.sep != ":" { - // line#offset only - return New(NewURI(valid), NewPoint(hold, 0, offset), end) - } - // we have a column, so if end only had one number, it is also the column - if !hadCol { - end = NewPoint(suf.num, end.v.Line, end.v.Offset) - } - return New(NewURI(suf.remains), NewPoint(suf.num, hold, offset), end) -} - -type suffix struct { - remains string - sep string - num int -} - -func rstripSuffix(input string) suffix { - if len(input) == 0 { - return suffix{"", "", -1} - } - remains := input - num := -1 - // first see if we have a number at the end - last := strings.LastIndexFunc(remains, func(r rune) bool { return r < '0' || r > '9' }) - if last >= 0 && last < len(remains)-1 { - number, err := strconv.ParseInt(remains[last+1:], 10, 64) - if err == nil { - num = int(number) - remains = remains[:last+1] - } - } - // now see if we have a trailing separator - r, w := utf8.DecodeLastRuneInString(remains) - if r != ':' && r != '#' && r == '#' { - return suffix{input, "", -1} - } - remains = remains[:len(remains)-w] - return suffix{remains, string(r), num} -} diff --git a/vendor/golang.org/x/tools/internal/span/span.go b/vendor/golang.org/x/tools/internal/span/span.go deleted file mode 100644 index 4d2ad09..0000000 --- a/vendor/golang.org/x/tools/internal/span/span.go +++ /dev/null @@ -1,285 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package span contains support for representing with positions and ranges in -// text files. -package span - -import ( - "encoding/json" - "fmt" - "path" -) - -// Span represents a source code range in standardized form. -type Span struct { - v span -} - -// Point represents a single point within a file. -// In general this should only be used as part of a Span, as on its own it -// does not carry enough information. -type Point struct { - v point -} - -type span struct { - URI URI `json:"uri"` - Start point `json:"start"` - End point `json:"end"` -} - -type point struct { - Line int `json:"line"` - Column int `json:"column"` - Offset int `json:"offset"` -} - -// Invalid is a span that reports false from IsValid -var Invalid = Span{v: span{Start: invalidPoint.v, End: invalidPoint.v}} - -var invalidPoint = Point{v: point{Line: 0, Column: 0, Offset: -1}} - -// Converter is the interface to an object that can convert between line:column -// and offset forms for a single file. -type Converter interface { - //ToPosition converts from an offset to a line:column pair. - ToPosition(offset int) (int, int, error) - //ToOffset converts from a line:column pair to an offset. - ToOffset(line, col int) (int, error) -} - -func New(uri URI, start Point, end Point) Span { - s := Span{v: span{URI: uri, Start: start.v, End: end.v}} - s.v.clean() - return s -} - -func NewPoint(line, col, offset int) Point { - p := Point{v: point{Line: line, Column: col, Offset: offset}} - p.v.clean() - return p -} - -func Compare(a, b Span) int { - if r := CompareURI(a.URI(), b.URI()); r != 0 { - return r - } - if r := comparePoint(a.v.Start, b.v.Start); r != 0 { - return r - } - return comparePoint(a.v.End, b.v.End) -} - -func ComparePoint(a, b Point) int { - return comparePoint(a.v, b.v) -} - -func comparePoint(a, b point) int { - if !a.hasPosition() { - if a.Offset < b.Offset { - return -1 - } - if a.Offset > b.Offset { - return 1 - } - return 0 - } - if a.Line < b.Line { - return -1 - } - if a.Line > b.Line { - return 1 - } - if a.Column < b.Column { - return -1 - } - if a.Column > b.Column { - return 1 - } - return 0 -} - -func (s Span) HasPosition() bool { return s.v.Start.hasPosition() } -func (s Span) HasOffset() bool { return s.v.Start.hasOffset() } -func (s Span) IsValid() bool { return s.v.Start.isValid() } -func (s Span) IsPoint() bool { return s.v.Start == s.v.End } -func (s Span) URI() URI { return s.v.URI } -func (s Span) Start() Point { return Point{s.v.Start} } -func (s Span) End() Point { return Point{s.v.End} } -func (s *Span) MarshalJSON() ([]byte, error) { return json.Marshal(&s.v) } -func (s *Span) UnmarshalJSON(b []byte) error { return json.Unmarshal(b, &s.v) } - -func (p Point) HasPosition() bool { return p.v.hasPosition() } -func (p Point) HasOffset() bool { return p.v.hasOffset() } -func (p Point) IsValid() bool { return p.v.isValid() } -func (p *Point) MarshalJSON() ([]byte, error) { return json.Marshal(&p.v) } -func (p *Point) UnmarshalJSON(b []byte) error { return json.Unmarshal(b, &p.v) } -func (p Point) Line() int { - if !p.v.hasPosition() { - panic(fmt.Errorf("position not set in %v", p.v)) - } - return p.v.Line -} -func (p Point) Column() int { - if !p.v.hasPosition() { - panic(fmt.Errorf("position not set in %v", p.v)) - } - return p.v.Column -} -func (p Point) Offset() int { - if !p.v.hasOffset() { - panic(fmt.Errorf("offset not set in %v", p.v)) - } - return p.v.Offset -} - -func (p point) hasPosition() bool { return p.Line > 0 } -func (p point) hasOffset() bool { return p.Offset >= 0 } -func (p point) isValid() bool { return p.hasPosition() || p.hasOffset() } -func (p point) isZero() bool { - return (p.Line == 1 && p.Column == 1) || (!p.hasPosition() && p.Offset == 0) -} - -func (s *span) clean() { - //this presumes the points are already clean - if !s.End.isValid() || (s.End == point{}) { - s.End = s.Start - } -} - -func (p *point) clean() { - if p.Line < 0 { - p.Line = 0 - } - if p.Column <= 0 { - if p.Line > 0 { - p.Column = 1 - } else { - p.Column = 0 - } - } - if p.Offset == 0 && (p.Line > 1 || p.Column > 1) { - p.Offset = -1 - } -} - -// Format implements fmt.Formatter to print the Location in a standard form. -// The format produced is one that can be read back in using Parse. -func (s Span) Format(f fmt.State, c rune) { - fullForm := f.Flag('+') - preferOffset := f.Flag('#') - // we should always have a uri, simplify if it is file format - //TODO: make sure the end of the uri is unambiguous - uri := string(s.v.URI) - if c == 'f' { - uri = path.Base(uri) - } else if !fullForm { - uri = s.v.URI.Filename() - } - fmt.Fprint(f, uri) - if !s.IsValid() || (!fullForm && s.v.Start.isZero() && s.v.End.isZero()) { - return - } - // see which bits of start to write - printOffset := s.HasOffset() && (fullForm || preferOffset || !s.HasPosition()) - printLine := s.HasPosition() && (fullForm || !printOffset) - printColumn := printLine && (fullForm || (s.v.Start.Column > 1 || s.v.End.Column > 1)) - fmt.Fprint(f, ":") - if printLine { - fmt.Fprintf(f, "%d", s.v.Start.Line) - } - if printColumn { - fmt.Fprintf(f, ":%d", s.v.Start.Column) - } - if printOffset { - fmt.Fprintf(f, "#%d", s.v.Start.Offset) - } - // start is written, do we need end? - if s.IsPoint() { - return - } - // we don't print the line if it did not change - printLine = fullForm || (printLine && s.v.End.Line > s.v.Start.Line) - fmt.Fprint(f, "-") - if printLine { - fmt.Fprintf(f, "%d", s.v.End.Line) - } - if printColumn { - if printLine { - fmt.Fprint(f, ":") - } - fmt.Fprintf(f, "%d", s.v.End.Column) - } - if printOffset { - fmt.Fprintf(f, "#%d", s.v.End.Offset) - } -} - -func (s Span) WithPosition(c Converter) (Span, error) { - if err := s.update(c, true, false); err != nil { - return Span{}, err - } - return s, nil -} - -func (s Span) WithOffset(c Converter) (Span, error) { - if err := s.update(c, false, true); err != nil { - return Span{}, err - } - return s, nil -} - -func (s Span) WithAll(c Converter) (Span, error) { - if err := s.update(c, true, true); err != nil { - return Span{}, err - } - return s, nil -} - -func (s *Span) update(c Converter, withPos, withOffset bool) error { - if !s.IsValid() { - return fmt.Errorf("cannot add information to an invalid span") - } - if withPos && !s.HasPosition() { - if err := s.v.Start.updatePosition(c); err != nil { - return err - } - if s.v.End.Offset == s.v.Start.Offset { - s.v.End = s.v.Start - } else if err := s.v.End.updatePosition(c); err != nil { - return err - } - } - if withOffset && (!s.HasOffset() || (s.v.End.hasPosition() && !s.v.End.hasOffset())) { - if err := s.v.Start.updateOffset(c); err != nil { - return err - } - if s.v.End.Line == s.v.Start.Line && s.v.End.Column == s.v.Start.Column { - s.v.End.Offset = s.v.Start.Offset - } else if err := s.v.End.updateOffset(c); err != nil { - return err - } - } - return nil -} - -func (p *point) updatePosition(c Converter) error { - line, col, err := c.ToPosition(p.Offset) - if err != nil { - return err - } - p.Line = line - p.Column = col - return nil -} - -func (p *point) updateOffset(c Converter) error { - offset, err := c.ToOffset(p.Line, p.Column) - if err != nil { - return err - } - p.Offset = offset - return nil -} diff --git a/vendor/golang.org/x/tools/internal/span/token.go b/vendor/golang.org/x/tools/internal/span/token.go deleted file mode 100644 index ce44541..0000000 --- a/vendor/golang.org/x/tools/internal/span/token.go +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package span - -import ( - "fmt" - "go/token" -) - -// Range represents a source code range in token.Pos form. -// It also carries the FileSet that produced the positions, so that it is -// self contained. -type Range struct { - FileSet *token.FileSet - Start token.Pos - End token.Pos -} - -// TokenConverter is a Converter backed by a token file set and file. -// It uses the file set methods to work out the conversions, which -// makes it fast and does not require the file contents. -type TokenConverter struct { - fset *token.FileSet - file *token.File -} - -// NewRange creates a new Range from a FileSet and two positions. -// To represent a point pass a 0 as the end pos. -func NewRange(fset *token.FileSet, start, end token.Pos) Range { - return Range{ - FileSet: fset, - Start: start, - End: end, - } -} - -// NewTokenConverter returns an implementation of Converter backed by a -// token.File. -func NewTokenConverter(fset *token.FileSet, f *token.File) *TokenConverter { - return &TokenConverter{fset: fset, file: f} -} - -// NewContentConverter returns an implementation of Converter for the -// given file content. -func NewContentConverter(filename string, content []byte) *TokenConverter { - fset := token.NewFileSet() - f := fset.AddFile(filename, -1, len(content)) - f.SetLinesForContent(content) - return &TokenConverter{fset: fset, file: f} -} - -// IsPoint returns true if the range represents a single point. -func (r Range) IsPoint() bool { - return r.Start == r.End -} - -// Span converts a Range to a Span that represents the Range. -// It will fill in all the members of the Span, calculating the line and column -// information. -func (r Range) Span() (Span, error) { - f := r.FileSet.File(r.Start) - if f == nil { - return Span{}, fmt.Errorf("file not found in FileSet") - } - s := Span{v: span{URI: FileURI(f.Name())}} - var err error - s.v.Start.Offset, err = offset(f, r.Start) - if err != nil { - return Span{}, err - } - if r.End.IsValid() { - s.v.End.Offset, err = offset(f, r.End) - if err != nil { - return Span{}, err - } - } - s.v.Start.clean() - s.v.End.clean() - s.v.clean() - converter := NewTokenConverter(r.FileSet, f) - return s.WithPosition(converter) -} - -// offset is a copy of the Offset function in go/token, but with the adjustment -// that it does not panic on invalid positions. -func offset(f *token.File, pos token.Pos) (int, error) { - if int(pos) < f.Base() || int(pos) > f.Base()+f.Size() { - return 0, fmt.Errorf("invalid pos") - } - return int(pos) - f.Base(), nil -} - -// Range converts a Span to a Range that represents the Span for the supplied -// File. -func (s Span) Range(converter *TokenConverter) (Range, error) { - s, err := s.WithOffset(converter) - if err != nil { - return Range{}, err - } - // go/token will panic if the offset is larger than the file's size, - // so check here to avoid panicking. - if s.Start().Offset() > converter.file.Size() { - return Range{}, fmt.Errorf("start offset %v is past the end of the file %v", s.Start(), converter.file.Size()) - } - if s.End().Offset() > converter.file.Size() { - return Range{}, fmt.Errorf("end offset %v is past the end of the file %v", s.End(), converter.file.Size()) - } - return Range{ - FileSet: converter.fset, - Start: converter.file.Pos(s.Start().Offset()), - End: converter.file.Pos(s.End().Offset()), - }, nil -} - -func (l *TokenConverter) ToPosition(offset int) (int, int, error) { - if offset > l.file.Size() { - return 0, 0, fmt.Errorf("offset %v is past the end of the file %v", offset, l.file.Size()) - } - pos := l.file.Pos(offset) - p := l.fset.Position(pos) - if offset == l.file.Size() { - return p.Line + 1, 1, nil - } - return p.Line, p.Column, nil -} - -func (l *TokenConverter) ToOffset(line, col int) (int, error) { - if line < 0 { - return -1, fmt.Errorf("line is not valid") - } - lineMax := l.file.LineCount() + 1 - if line > lineMax { - return -1, fmt.Errorf("line is beyond end of file %v", lineMax) - } else if line == lineMax { - if col > 1 { - return -1, fmt.Errorf("column is beyond end of file") - } - // at the end of the file, allowing for a trailing eol - return l.file.Size(), nil - } - pos := lineStart(l.file, line) - if !pos.IsValid() { - return -1, fmt.Errorf("line is not in file") - } - // we assume that column is in bytes here, and that the first byte of a - // line is at column 1 - pos += token.Pos(col - 1) - return offset(l.file, pos) -} diff --git a/vendor/golang.org/x/tools/internal/span/token111.go b/vendor/golang.org/x/tools/internal/span/token111.go deleted file mode 100644 index bf7a540..0000000 --- a/vendor/golang.org/x/tools/internal/span/token111.go +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build !go1.12 - -package span - -import ( - "go/token" -) - -// lineStart is the pre-Go 1.12 version of (*token.File).LineStart. For Go -// versions <= 1.11, we borrow logic from the analysisutil package. -// TODO(rstambler): Delete this file when we no longer support Go 1.11. -func lineStart(f *token.File, line int) token.Pos { - // Use binary search to find the start offset of this line. - - min := 0 // inclusive - max := f.Size() // exclusive - for { - offset := (min + max) / 2 - pos := f.Pos(offset) - posn := f.Position(pos) - if posn.Line == line { - return pos - (token.Pos(posn.Column) - 1) - } - - if min+1 >= max { - return token.NoPos - } - - if posn.Line < line { - min = offset - } else { - max = offset - } - } -} diff --git a/vendor/golang.org/x/tools/internal/span/token112.go b/vendor/golang.org/x/tools/internal/span/token112.go deleted file mode 100644 index 017aec9..0000000 --- a/vendor/golang.org/x/tools/internal/span/token112.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build go1.12 - -package span - -import ( - "go/token" -) - -// TODO(rstambler): Delete this file when we no longer support Go 1.11. -func lineStart(f *token.File, line int) token.Pos { - return f.LineStart(line) -} diff --git a/vendor/golang.org/x/tools/internal/span/uri.go b/vendor/golang.org/x/tools/internal/span/uri.go deleted file mode 100644 index e05a9e6..0000000 --- a/vendor/golang.org/x/tools/internal/span/uri.go +++ /dev/null @@ -1,152 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package span - -import ( - "fmt" - "net/url" - "os" - "path" - "path/filepath" - "runtime" - "strings" - "unicode" -) - -const fileScheme = "file" - -// URI represents the full URI for a file. -type URI string - -// Filename returns the file path for the given URI. -// It is an error to call this on a URI that is not a valid filename. -func (uri URI) Filename() string { - filename, err := filename(uri) - if err != nil { - panic(err) - } - return filepath.FromSlash(filename) -} - -func filename(uri URI) (string, error) { - if uri == "" { - return "", nil - } - u, err := url.ParseRequestURI(string(uri)) - if err != nil { - return "", err - } - if u.Scheme != fileScheme { - return "", fmt.Errorf("only file URIs are supported, got %q from %q", u.Scheme, uri) - } - if isWindowsDriveURI(u.Path) { - u.Path = u.Path[1:] - } - return u.Path, nil -} - -// NewURI returns a span URI for the string. -// It will attempt to detect if the string is a file path or uri. -func NewURI(s string) URI { - if u, err := url.PathUnescape(s); err == nil { - s = u - } - if strings.HasPrefix(s, fileScheme+"://") { - return URI(s) - } - return FileURI(s) -} - -func CompareURI(a, b URI) int { - if equalURI(a, b) { - return 0 - } - if a < b { - return -1 - } - return 1 -} - -func equalURI(a, b URI) bool { - if a == b { - return true - } - // If we have the same URI basename, we may still have the same file URIs. - if !strings.EqualFold(path.Base(string(a)), path.Base(string(b))) { - return false - } - fa, err := filename(a) - if err != nil { - return false - } - fb, err := filename(b) - if err != nil { - return false - } - // Stat the files to check if they are equal. - infoa, err := os.Stat(filepath.FromSlash(fa)) - if err != nil { - return false - } - infob, err := os.Stat(filepath.FromSlash(fb)) - if err != nil { - return false - } - return os.SameFile(infoa, infob) -} - -// FileURI returns a span URI for the supplied file path. -// It will always have the file scheme. -func FileURI(path string) URI { - if path == "" { - return "" - } - // Handle standard library paths that contain the literal "$GOROOT". - // TODO(rstambler): The go/packages API should allow one to determine a user's $GOROOT. - const prefix = "$GOROOT" - if len(path) >= len(prefix) && strings.EqualFold(prefix, path[:len(prefix)]) { - suffix := path[len(prefix):] - path = runtime.GOROOT() + suffix - } - if !isWindowsDrivePath(path) { - if abs, err := filepath.Abs(path); err == nil { - path = abs - } - } - // Check the file path again, in case it became absolute. - if isWindowsDrivePath(path) { - path = "/" + path - } - path = filepath.ToSlash(path) - u := url.URL{ - Scheme: fileScheme, - Path: path, - } - uri := u.String() - if unescaped, err := url.PathUnescape(uri); err == nil { - uri = unescaped - } - return URI(uri) -} - -// isWindowsDrivePath returns true if the file path is of the form used by -// Windows. We check if the path begins with a drive letter, followed by a ":". -func isWindowsDrivePath(path string) bool { - if len(path) < 4 { - return false - } - return unicode.IsLetter(rune(path[0])) && path[1] == ':' -} - -// isWindowsDriveURI returns true if the file URI is of the format used by -// Windows URIs. The url.Parse package does not specially handle Windows paths -// (see https://golang.org/issue/6027). We check if the URI path has -// a drive prefix (e.g. "/C:"). If so, we trim the leading "/". -func isWindowsDriveURI(uri string) bool { - if len(uri) < 4 { - return false - } - return uri[0] == '/' && unicode.IsLetter(rune(uri[1])) && uri[2] == ':' -} diff --git a/vendor/golang.org/x/tools/internal/span/utf16.go b/vendor/golang.org/x/tools/internal/span/utf16.go deleted file mode 100644 index 561b3fa..0000000 --- a/vendor/golang.org/x/tools/internal/span/utf16.go +++ /dev/null @@ -1,94 +0,0 @@ -// Copyright 2019 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package span - -import ( - "fmt" - "unicode/utf16" - "unicode/utf8" -) - -// ToUTF16Column calculates the utf16 column expressed by the point given the -// supplied file contents. -// This is used to convert from the native (always in bytes) column -// representation and the utf16 counts used by some editors. -func ToUTF16Column(p Point, content []byte) (int, error) { - if content == nil { - return -1, fmt.Errorf("ToUTF16Column: missing content") - } - if !p.HasPosition() { - return -1, fmt.Errorf("ToUTF16Column: point is missing position") - } - if !p.HasOffset() { - return -1, fmt.Errorf("ToUTF16Column: point is missing offset") - } - offset := p.Offset() // 0-based - colZero := p.Column() - 1 // 0-based - if colZero == 0 { - // 0-based column 0, so it must be chr 1 - return 1, nil - } else if colZero < 0 { - return -1, fmt.Errorf("ToUTF16Column: column is invalid (%v)", colZero) - } - // work out the offset at the start of the line using the column - lineOffset := offset - colZero - if lineOffset < 0 || offset > len(content) { - return -1, fmt.Errorf("ToUTF16Column: offsets %v-%v outside file contents (%v)", lineOffset, offset, len(content)) - } - // Use the offset to pick out the line start. - // This cannot panic: offset > len(content) and lineOffset < offset. - start := content[lineOffset:] - - // Now, truncate down to the supplied column. - start = start[:colZero] - - // and count the number of utf16 characters - // in theory we could do this by hand more efficiently... - return len(utf16.Encode([]rune(string(start)))) + 1, nil -} - -// FromUTF16Column advances the point by the utf16 character offset given the -// supplied line contents. -// This is used to convert from the utf16 counts used by some editors to the -// native (always in bytes) column representation. -func FromUTF16Column(p Point, chr int, content []byte) (Point, error) { - if !p.HasOffset() { - return Point{}, fmt.Errorf("FromUTF16Column: point is missing offset") - } - // if chr is 1 then no adjustment needed - if chr <= 1 { - return p, nil - } - if p.Offset() >= len(content) { - return p, fmt.Errorf("FromUTF16Column: offset (%v) greater than length of content (%v)", p.Offset(), len(content)) - } - remains := content[p.Offset():] - // scan forward the specified number of characters - for count := 1; count < chr; count++ { - if len(remains) <= 0 { - return Point{}, fmt.Errorf("FromUTF16Column: chr goes beyond the content") - } - r, w := utf8.DecodeRune(remains) - if r == '\n' { - // Per the LSP spec: - // - // > If the character value is greater than the line length it - // > defaults back to the line length. - break - } - remains = remains[w:] - if r >= 0x10000 { - // a two point rune - count++ - // if we finished in a two point rune, do not advance past the first - if count >= chr { - break - } - } - p.v.Column += w - p.v.Offset += w - } - return p, nil -} diff --git a/vendor/golang.org/x/tools/internal/typeparams/common.go b/vendor/golang.org/x/tools/internal/typeparams/common.go new file mode 100644 index 0000000..25a1426 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/common.go @@ -0,0 +1,179 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package typeparams contains common utilities for writing tools that interact +// with generic Go code, as introduced with Go 1.18. +// +// Many of the types and functions in this package are proxies for the new APIs +// introduced in the standard library with Go 1.18. For example, the +// typeparams.Union type is an alias for go/types.Union, and the ForTypeSpec +// function returns the value of the go/ast.TypeSpec.TypeParams field. At Go +// versions older than 1.18 these helpers are implemented as stubs, allowing +// users of this package to write code that handles generic constructs inline, +// even if the Go version being used to compile does not support generics. +// +// Additionally, this package contains common utilities for working with the +// new generic constructs, to supplement the standard library APIs. Notably, +// the StructuralTerms API computes a minimal representation of the structural +// restrictions on a type parameter. +// +// An external version of these APIs is available in the +// golang.org/x/exp/typeparams module. +package typeparams + +import ( + "go/ast" + "go/token" + "go/types" +) + +// UnpackIndexExpr extracts data from AST nodes that represent index +// expressions. +// +// For an ast.IndexExpr, the resulting indices slice will contain exactly one +// index expression. For an ast.IndexListExpr (go1.18+), it may have a variable +// number of index expressions. +// +// For nodes that don't represent index expressions, the first return value of +// UnpackIndexExpr will be nil. +func UnpackIndexExpr(n ast.Node) (x ast.Expr, lbrack token.Pos, indices []ast.Expr, rbrack token.Pos) { + switch e := n.(type) { + case *ast.IndexExpr: + return e.X, e.Lbrack, []ast.Expr{e.Index}, e.Rbrack + case *IndexListExpr: + return e.X, e.Lbrack, e.Indices, e.Rbrack + } + return nil, token.NoPos, nil, token.NoPos +} + +// PackIndexExpr returns an *ast.IndexExpr or *ast.IndexListExpr, depending on +// the cardinality of indices. Calling PackIndexExpr with len(indices) == 0 +// will panic. +func PackIndexExpr(x ast.Expr, lbrack token.Pos, indices []ast.Expr, rbrack token.Pos) ast.Expr { + switch len(indices) { + case 0: + panic("empty indices") + case 1: + return &ast.IndexExpr{ + X: x, + Lbrack: lbrack, + Index: indices[0], + Rbrack: rbrack, + } + default: + return &IndexListExpr{ + X: x, + Lbrack: lbrack, + Indices: indices, + Rbrack: rbrack, + } + } +} + +// IsTypeParam reports whether t is a type parameter. +func IsTypeParam(t types.Type) bool { + _, ok := t.(*TypeParam) + return ok +} + +// OriginMethod returns the origin method associated with the method fn. +// For methods on a non-generic receiver base type, this is just +// fn. However, for methods with a generic receiver, OriginMethod returns the +// corresponding method in the method set of the origin type. +// +// As a special case, if fn is not a method (has no receiver), OriginMethod +// returns fn. +func OriginMethod(fn *types.Func) *types.Func { + recv := fn.Type().(*types.Signature).Recv() + if recv == nil { + + return fn + } + base := recv.Type() + p, isPtr := base.(*types.Pointer) + if isPtr { + base = p.Elem() + } + named, isNamed := base.(*types.Named) + if !isNamed { + // Receiver is a *types.Interface. + return fn + } + if ForNamed(named).Len() == 0 { + // Receiver base has no type parameters, so we can avoid the lookup below. + return fn + } + orig := NamedTypeOrigin(named) + gfn, _, _ := types.LookupFieldOrMethod(orig, true, fn.Pkg(), fn.Name()) + return gfn.(*types.Func) +} + +// GenericAssignableTo is a generalization of types.AssignableTo that +// implements the following rule for uninstantiated generic types: +// +// If V and T are generic named types, then V is considered assignable to T if, +// for every possible instantation of V[A_1, ..., A_N], the instantiation +// T[A_1, ..., A_N] is valid and V[A_1, ..., A_N] implements T[A_1, ..., A_N]. +// +// If T has structural constraints, they must be satisfied by V. +// +// For example, consider the following type declarations: +// +// type Interface[T any] interface { +// Accept(T) +// } +// +// type Container[T any] struct { +// Element T +// } +// +// func (c Container[T]) Accept(t T) { c.Element = t } +// +// In this case, GenericAssignableTo reports that instantiations of Container +// are assignable to the corresponding instantiation of Interface. +func GenericAssignableTo(ctxt *Context, V, T types.Type) bool { + // If V and T are not both named, or do not have matching non-empty type + // parameter lists, fall back on types.AssignableTo. + + VN, Vnamed := V.(*types.Named) + TN, Tnamed := T.(*types.Named) + if !Vnamed || !Tnamed { + return types.AssignableTo(V, T) + } + + vtparams := ForNamed(VN) + ttparams := ForNamed(TN) + if vtparams.Len() == 0 || vtparams.Len() != ttparams.Len() || NamedTypeArgs(VN).Len() != 0 || NamedTypeArgs(TN).Len() != 0 { + return types.AssignableTo(V, T) + } + + // V and T have the same (non-zero) number of type params. Instantiate both + // with the type parameters of V. This must always succeed for V, and will + // succeed for T if and only if the type set of each type parameter of V is a + // subset of the type set of the corresponding type parameter of T, meaning + // that every instantiation of V corresponds to a valid instantiation of T. + + // Minor optimization: ensure we share a context across the two + // instantiations below. + if ctxt == nil { + ctxt = NewContext() + } + + var targs []types.Type + for i := 0; i < vtparams.Len(); i++ { + targs = append(targs, vtparams.At(i)) + } + + vinst, err := Instantiate(ctxt, V, targs, true) + if err != nil { + panic("type parameters should satisfy their own constraints") + } + + tinst, err := Instantiate(ctxt, T, targs, true) + if err != nil { + return false + } + + return types.AssignableTo(vinst, tinst) +} diff --git a/vendor/golang.org/x/tools/internal/typeparams/coretype.go b/vendor/golang.org/x/tools/internal/typeparams/coretype.go new file mode 100644 index 0000000..993135e --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/coretype.go @@ -0,0 +1,122 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeparams + +import ( + "go/types" +) + +// CoreType returns the core type of T or nil if T does not have a core type. +// +// See https://go.dev/ref/spec#Core_types for the definition of a core type. +func CoreType(T types.Type) types.Type { + U := T.Underlying() + if _, ok := U.(*types.Interface); !ok { + return U // for non-interface types, + } + + terms, err := _NormalTerms(U) + if len(terms) == 0 || err != nil { + // len(terms) -> empty type set of interface. + // err != nil => U is invalid, exceeds complexity bounds, or has an empty type set. + return nil // no core type. + } + + U = terms[0].Type().Underlying() + var identical int // i in [0,identical) => Identical(U, terms[i].Type().Underlying()) + for identical = 1; identical < len(terms); identical++ { + if !types.Identical(U, terms[identical].Type().Underlying()) { + break + } + } + + if identical == len(terms) { + // https://go.dev/ref/spec#Core_types + // "There is a single type U which is the underlying type of all types in the type set of T" + return U + } + ch, ok := U.(*types.Chan) + if !ok { + return nil // no core type as identical < len(terms) and U is not a channel. + } + // https://go.dev/ref/spec#Core_types + // "the type chan E if T contains only bidirectional channels, or the type chan<- E or + // <-chan E depending on the direction of the directional channels present." + for chans := identical; chans < len(terms); chans++ { + curr, ok := terms[chans].Type().Underlying().(*types.Chan) + if !ok { + return nil + } + if !types.Identical(ch.Elem(), curr.Elem()) { + return nil // channel elements are not identical. + } + if ch.Dir() == types.SendRecv { + // ch is bidirectional. We can safely always use curr's direction. + ch = curr + } else if curr.Dir() != types.SendRecv && ch.Dir() != curr.Dir() { + // ch and curr are not bidirectional and not the same direction. + return nil + } + } + return ch +} + +// _NormalTerms returns a slice of terms representing the normalized structural +// type restrictions of a type, if any. +// +// For all types other than *types.TypeParam, *types.Interface, and +// *types.Union, this is just a single term with Tilde() == false and +// Type() == typ. For *types.TypeParam, *types.Interface, and *types.Union, see +// below. +// +// Structural type restrictions of a type parameter are created via +// non-interface types embedded in its constraint interface (directly, or via a +// chain of interface embeddings). For example, in the declaration type +// T[P interface{~int; m()}] int the structural restriction of the type +// parameter P is ~int. +// +// With interface embedding and unions, the specification of structural type +// restrictions may be arbitrarily complex. For example, consider the +// following: +// +// type A interface{ ~string|~[]byte } +// +// type B interface{ int|string } +// +// type C interface { ~string|~int } +// +// type T[P interface{ A|B; C }] int +// +// In this example, the structural type restriction of P is ~string|int: A|B +// expands to ~string|~[]byte|int|string, which reduces to ~string|~[]byte|int, +// which when intersected with C (~string|~int) yields ~string|int. +// +// _NormalTerms computes these expansions and reductions, producing a +// "normalized" form of the embeddings. A structural restriction is normalized +// if it is a single union containing no interface terms, and is minimal in the +// sense that removing any term changes the set of types satisfying the +// constraint. It is left as a proof for the reader that, modulo sorting, there +// is exactly one such normalized form. +// +// Because the minimal representation always takes this form, _NormalTerms +// returns a slice of tilde terms corresponding to the terms of the union in +// the normalized structural restriction. An error is returned if the type is +// invalid, exceeds complexity bounds, or has an empty type set. In the latter +// case, _NormalTerms returns ErrEmptyTypeSet. +// +// _NormalTerms makes no guarantees about the order of terms, except that it +// is deterministic. +func _NormalTerms(typ types.Type) ([]*Term, error) { + switch typ := typ.(type) { + case *TypeParam: + return StructuralTerms(typ) + case *Union: + return UnionTermSet(typ) + case *types.Interface: + return InterfaceTermSet(typ) + default: + return []*Term{NewTerm(false, typ)}, nil + } +} diff --git a/vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go b/vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go new file mode 100644 index 0000000..1821239 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/enabled_go117.go @@ -0,0 +1,12 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !go1.18 +// +build !go1.18 + +package typeparams + +// Enabled reports whether type parameters are enabled in the current build +// environment. +const Enabled = false diff --git a/vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go b/vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go new file mode 100644 index 0000000..d671488 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/enabled_go118.go @@ -0,0 +1,15 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.18 +// +build go1.18 + +package typeparams + +// Note: this constant is in a separate file as this is the only acceptable +// diff between the <1.18 API of this package and the 1.18 API. + +// Enabled reports whether type parameters are enabled in the current build +// environment. +const Enabled = true diff --git a/vendor/golang.org/x/tools/internal/typeparams/normalize.go b/vendor/golang.org/x/tools/internal/typeparams/normalize.go new file mode 100644 index 0000000..9c631b6 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/normalize.go @@ -0,0 +1,218 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typeparams + +import ( + "errors" + "fmt" + "go/types" + "os" + "strings" +) + +//go:generate go run copytermlist.go + +const debug = false + +var ErrEmptyTypeSet = errors.New("empty type set") + +// StructuralTerms returns a slice of terms representing the normalized +// structural type restrictions of a type parameter, if any. +// +// Structural type restrictions of a type parameter are created via +// non-interface types embedded in its constraint interface (directly, or via a +// chain of interface embeddings). For example, in the declaration +// +// type T[P interface{~int; m()}] int +// +// the structural restriction of the type parameter P is ~int. +// +// With interface embedding and unions, the specification of structural type +// restrictions may be arbitrarily complex. For example, consider the +// following: +// +// type A interface{ ~string|~[]byte } +// +// type B interface{ int|string } +// +// type C interface { ~string|~int } +// +// type T[P interface{ A|B; C }] int +// +// In this example, the structural type restriction of P is ~string|int: A|B +// expands to ~string|~[]byte|int|string, which reduces to ~string|~[]byte|int, +// which when intersected with C (~string|~int) yields ~string|int. +// +// StructuralTerms computes these expansions and reductions, producing a +// "normalized" form of the embeddings. A structural restriction is normalized +// if it is a single union containing no interface terms, and is minimal in the +// sense that removing any term changes the set of types satisfying the +// constraint. It is left as a proof for the reader that, modulo sorting, there +// is exactly one such normalized form. +// +// Because the minimal representation always takes this form, StructuralTerms +// returns a slice of tilde terms corresponding to the terms of the union in +// the normalized structural restriction. An error is returned if the +// constraint interface is invalid, exceeds complexity bounds, or has an empty +// type set. In the latter case, StructuralTerms returns ErrEmptyTypeSet. +// +// StructuralTerms makes no guarantees about the order of terms, except that it +// is deterministic. +func StructuralTerms(tparam *TypeParam) ([]*Term, error) { + constraint := tparam.Constraint() + if constraint == nil { + return nil, fmt.Errorf("%s has nil constraint", tparam) + } + iface, _ := constraint.Underlying().(*types.Interface) + if iface == nil { + return nil, fmt.Errorf("constraint is %T, not *types.Interface", constraint.Underlying()) + } + return InterfaceTermSet(iface) +} + +// InterfaceTermSet computes the normalized terms for a constraint interface, +// returning an error if the term set cannot be computed or is empty. In the +// latter case, the error will be ErrEmptyTypeSet. +// +// See the documentation of StructuralTerms for more information on +// normalization. +func InterfaceTermSet(iface *types.Interface) ([]*Term, error) { + return computeTermSet(iface) +} + +// UnionTermSet computes the normalized terms for a union, returning an error +// if the term set cannot be computed or is empty. In the latter case, the +// error will be ErrEmptyTypeSet. +// +// See the documentation of StructuralTerms for more information on +// normalization. +func UnionTermSet(union *Union) ([]*Term, error) { + return computeTermSet(union) +} + +func computeTermSet(typ types.Type) ([]*Term, error) { + tset, err := computeTermSetInternal(typ, make(map[types.Type]*termSet), 0) + if err != nil { + return nil, err + } + if tset.terms.isEmpty() { + return nil, ErrEmptyTypeSet + } + if tset.terms.isAll() { + return nil, nil + } + var terms []*Term + for _, term := range tset.terms { + terms = append(terms, NewTerm(term.tilde, term.typ)) + } + return terms, nil +} + +// A termSet holds the normalized set of terms for a given type. +// +// The name termSet is intentionally distinct from 'type set': a type set is +// all types that implement a type (and includes method restrictions), whereas +// a term set just represents the structural restrictions on a type. +type termSet struct { + complete bool + terms termlist +} + +func indentf(depth int, format string, args ...interface{}) { + fmt.Fprintf(os.Stderr, strings.Repeat(".", depth)+format+"\n", args...) +} + +func computeTermSetInternal(t types.Type, seen map[types.Type]*termSet, depth int) (res *termSet, err error) { + if t == nil { + panic("nil type") + } + + if debug { + indentf(depth, "%s", t.String()) + defer func() { + if err != nil { + indentf(depth, "=> %s", err) + } else { + indentf(depth, "=> %s", res.terms.String()) + } + }() + } + + const maxTermCount = 100 + if tset, ok := seen[t]; ok { + if !tset.complete { + return nil, fmt.Errorf("cycle detected in the declaration of %s", t) + } + return tset, nil + } + + // Mark the current type as seen to avoid infinite recursion. + tset := new(termSet) + defer func() { + tset.complete = true + }() + seen[t] = tset + + switch u := t.Underlying().(type) { + case *types.Interface: + // The term set of an interface is the intersection of the term sets of its + // embedded types. + tset.terms = allTermlist + for i := 0; i < u.NumEmbeddeds(); i++ { + embedded := u.EmbeddedType(i) + if _, ok := embedded.Underlying().(*TypeParam); ok { + return nil, fmt.Errorf("invalid embedded type %T", embedded) + } + tset2, err := computeTermSetInternal(embedded, seen, depth+1) + if err != nil { + return nil, err + } + tset.terms = tset.terms.intersect(tset2.terms) + } + case *Union: + // The term set of a union is the union of term sets of its terms. + tset.terms = nil + for i := 0; i < u.Len(); i++ { + t := u.Term(i) + var terms termlist + switch t.Type().Underlying().(type) { + case *types.Interface: + tset2, err := computeTermSetInternal(t.Type(), seen, depth+1) + if err != nil { + return nil, err + } + terms = tset2.terms + case *TypeParam, *Union: + // A stand-alone type parameter or union is not permitted as union + // term. + return nil, fmt.Errorf("invalid union term %T", t) + default: + if t.Type() == types.Typ[types.Invalid] { + continue + } + terms = termlist{{t.Tilde(), t.Type()}} + } + tset.terms = tset.terms.union(terms) + if len(tset.terms) > maxTermCount { + return nil, fmt.Errorf("exceeded max term count %d", maxTermCount) + } + } + case *TypeParam: + panic("unreachable") + default: + // For all other types, the term set is just a single non-tilde term + // holding the type itself. + if u != types.Typ[types.Invalid] { + tset.terms = termlist{{false, t}} + } + } + return tset, nil +} + +// under is a facade for the go/types internal function of the same name. It is +// used by typeterm.go. +func under(t types.Type) types.Type { + return t.Underlying() +} diff --git a/vendor/golang.org/x/tools/internal/typeparams/termlist.go b/vendor/golang.org/x/tools/internal/typeparams/termlist.go new file mode 100644 index 0000000..933106a --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/termlist.go @@ -0,0 +1,163 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Code generated by copytermlist.go DO NOT EDIT. + +package typeparams + +import ( + "bytes" + "go/types" +) + +// A termlist represents the type set represented by the union +// t1 βˆͺ y2 βˆͺ ... tn of the type sets of the terms t1 to tn. +// A termlist is in normal form if all terms are disjoint. +// termlist operations don't require the operands to be in +// normal form. +type termlist []*term + +// allTermlist represents the set of all types. +// It is in normal form. +var allTermlist = termlist{new(term)} + +// String prints the termlist exactly (without normalization). +func (xl termlist) String() string { + if len(xl) == 0 { + return "βˆ…" + } + var buf bytes.Buffer + for i, x := range xl { + if i > 0 { + buf.WriteString(" βˆͺ ") + } + buf.WriteString(x.String()) + } + return buf.String() +} + +// isEmpty reports whether the termlist xl represents the empty set of types. +func (xl termlist) isEmpty() bool { + // If there's a non-nil term, the entire list is not empty. + // If the termlist is in normal form, this requires at most + // one iteration. + for _, x := range xl { + if x != nil { + return false + } + } + return true +} + +// isAll reports whether the termlist xl represents the set of all types. +func (xl termlist) isAll() bool { + // If there's a 𝓀 term, the entire list is 𝓀. + // If the termlist is in normal form, this requires at most + // one iteration. + for _, x := range xl { + if x != nil && x.typ == nil { + return true + } + } + return false +} + +// norm returns the normal form of xl. +func (xl termlist) norm() termlist { + // Quadratic algorithm, but good enough for now. + // TODO(gri) fix asymptotic performance + used := make([]bool, len(xl)) + var rl termlist + for i, xi := range xl { + if xi == nil || used[i] { + continue + } + for j := i + 1; j < len(xl); j++ { + xj := xl[j] + if xj == nil || used[j] { + continue + } + if u1, u2 := xi.union(xj); u2 == nil { + // If we encounter a 𝓀 term, the entire list is 𝓀. + // Exit early. + // (Note that this is not just an optimization; + // if we continue, we may end up with a 𝓀 term + // and other terms and the result would not be + // in normal form.) + if u1.typ == nil { + return allTermlist + } + xi = u1 + used[j] = true // xj is now unioned into xi - ignore it in future iterations + } + } + rl = append(rl, xi) + } + return rl +} + +// union returns the union xl βˆͺ yl. +func (xl termlist) union(yl termlist) termlist { + return append(xl, yl...).norm() +} + +// intersect returns the intersection xl ∩ yl. +func (xl termlist) intersect(yl termlist) termlist { + if xl.isEmpty() || yl.isEmpty() { + return nil + } + + // Quadratic algorithm, but good enough for now. + // TODO(gri) fix asymptotic performance + var rl termlist + for _, x := range xl { + for _, y := range yl { + if r := x.intersect(y); r != nil { + rl = append(rl, r) + } + } + } + return rl.norm() +} + +// equal reports whether xl and yl represent the same type set. +func (xl termlist) equal(yl termlist) bool { + // TODO(gri) this should be more efficient + return xl.subsetOf(yl) && yl.subsetOf(xl) +} + +// includes reports whether t ∈ xl. +func (xl termlist) includes(t types.Type) bool { + for _, x := range xl { + if x.includes(t) { + return true + } + } + return false +} + +// supersetOf reports whether y βŠ† xl. +func (xl termlist) supersetOf(y *term) bool { + for _, x := range xl { + if y.subsetOf(x) { + return true + } + } + return false +} + +// subsetOf reports whether xl βŠ† yl. +func (xl termlist) subsetOf(yl termlist) bool { + if yl.isEmpty() { + return xl.isEmpty() + } + + // each term x of xl must be a subset of yl + for _, x := range xl { + if !yl.supersetOf(x) { + return false // x is not a subset yl + } + } + return true +} diff --git a/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go b/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go new file mode 100644 index 0000000..b478897 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/typeparams_go117.go @@ -0,0 +1,197 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !go1.18 +// +build !go1.18 + +package typeparams + +import ( + "go/ast" + "go/token" + "go/types" +) + +func unsupported() { + panic("type parameters are unsupported at this go version") +} + +// IndexListExpr is a placeholder type, as type parameters are not supported at +// this Go version. Its methods panic on use. +type IndexListExpr struct { + ast.Expr + X ast.Expr // expression + Lbrack token.Pos // position of "[" + Indices []ast.Expr // index expressions + Rbrack token.Pos // position of "]" +} + +// ForTypeSpec returns an empty field list, as type parameters on not supported +// at this Go version. +func ForTypeSpec(*ast.TypeSpec) *ast.FieldList { + return nil +} + +// ForFuncType returns an empty field list, as type parameters are not +// supported at this Go version. +func ForFuncType(*ast.FuncType) *ast.FieldList { + return nil +} + +// TypeParam is a placeholder type, as type parameters are not supported at +// this Go version. Its methods panic on use. +type TypeParam struct{ types.Type } + +func (*TypeParam) Index() int { unsupported(); return 0 } +func (*TypeParam) Constraint() types.Type { unsupported(); return nil } +func (*TypeParam) Obj() *types.TypeName { unsupported(); return nil } + +// TypeParamList is a placeholder for an empty type parameter list. +type TypeParamList struct{} + +func (*TypeParamList) Len() int { return 0 } +func (*TypeParamList) At(int) *TypeParam { unsupported(); return nil } + +// TypeList is a placeholder for an empty type list. +type TypeList struct{} + +func (*TypeList) Len() int { return 0 } +func (*TypeList) At(int) types.Type { unsupported(); return nil } + +// NewTypeParam is unsupported at this Go version, and panics. +func NewTypeParam(name *types.TypeName, constraint types.Type) *TypeParam { + unsupported() + return nil +} + +// SetTypeParamConstraint is unsupported at this Go version, and panics. +func SetTypeParamConstraint(tparam *TypeParam, constraint types.Type) { + unsupported() +} + +// NewSignatureType calls types.NewSignature, panicking if recvTypeParams or +// typeParams is non-empty. +func NewSignatureType(recv *types.Var, recvTypeParams, typeParams []*TypeParam, params, results *types.Tuple, variadic bool) *types.Signature { + if len(recvTypeParams) != 0 || len(typeParams) != 0 { + panic("signatures cannot have type parameters at this Go version") + } + return types.NewSignature(recv, params, results, variadic) +} + +// ForSignature returns an empty slice. +func ForSignature(*types.Signature) *TypeParamList { + return nil +} + +// RecvTypeParams returns a nil slice. +func RecvTypeParams(sig *types.Signature) *TypeParamList { + return nil +} + +// IsComparable returns false, as no interfaces are type-restricted at this Go +// version. +func IsComparable(*types.Interface) bool { + return false +} + +// IsMethodSet returns true, as no interfaces are type-restricted at this Go +// version. +func IsMethodSet(*types.Interface) bool { + return true +} + +// IsImplicit returns false, as no interfaces are implicit at this Go version. +func IsImplicit(*types.Interface) bool { + return false +} + +// MarkImplicit does nothing, because this Go version does not have implicit +// interfaces. +func MarkImplicit(*types.Interface) {} + +// ForNamed returns an empty type parameter list, as type parameters are not +// supported at this Go version. +func ForNamed(*types.Named) *TypeParamList { + return nil +} + +// SetForNamed panics if tparams is non-empty. +func SetForNamed(_ *types.Named, tparams []*TypeParam) { + if len(tparams) > 0 { + unsupported() + } +} + +// NamedTypeArgs returns nil. +func NamedTypeArgs(*types.Named) *TypeList { + return nil +} + +// NamedTypeOrigin is the identity method at this Go version. +func NamedTypeOrigin(named *types.Named) types.Type { + return named +} + +// Term holds information about a structural type restriction. +type Term struct { + tilde bool + typ types.Type +} + +func (m *Term) Tilde() bool { return m.tilde } +func (m *Term) Type() types.Type { return m.typ } +func (m *Term) String() string { + pre := "" + if m.tilde { + pre = "~" + } + return pre + m.typ.String() +} + +// NewTerm is unsupported at this Go version, and panics. +func NewTerm(tilde bool, typ types.Type) *Term { + return &Term{tilde, typ} +} + +// Union is a placeholder type, as type parameters are not supported at this Go +// version. Its methods panic on use. +type Union struct{ types.Type } + +func (*Union) Len() int { return 0 } +func (*Union) Term(i int) *Term { unsupported(); return nil } + +// NewUnion is unsupported at this Go version, and panics. +func NewUnion(terms []*Term) *Union { + unsupported() + return nil +} + +// InitInstanceInfo is a noop at this Go version. +func InitInstanceInfo(*types.Info) {} + +// Instance is a placeholder type, as type parameters are not supported at this +// Go version. +type Instance struct { + TypeArgs *TypeList + Type types.Type +} + +// GetInstances returns a nil map, as type parameters are not supported at this +// Go version. +func GetInstances(info *types.Info) map[*ast.Ident]Instance { return nil } + +// Context is a placeholder type, as type parameters are not supported at +// this Go version. +type Context struct{} + +// NewContext returns a placeholder Context instance. +func NewContext() *Context { + return &Context{} +} + +// Instantiate is unsupported on this Go version, and panics. +func Instantiate(ctxt *Context, typ types.Type, targs []types.Type, validate bool) (types.Type, error) { + unsupported() + return nil, nil +} diff --git a/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go b/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go new file mode 100644 index 0000000..114a36b --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/typeparams_go118.go @@ -0,0 +1,151 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.18 +// +build go1.18 + +package typeparams + +import ( + "go/ast" + "go/types" +) + +// IndexListExpr is an alias for ast.IndexListExpr. +type IndexListExpr = ast.IndexListExpr + +// ForTypeSpec returns n.TypeParams. +func ForTypeSpec(n *ast.TypeSpec) *ast.FieldList { + if n == nil { + return nil + } + return n.TypeParams +} + +// ForFuncType returns n.TypeParams. +func ForFuncType(n *ast.FuncType) *ast.FieldList { + if n == nil { + return nil + } + return n.TypeParams +} + +// TypeParam is an alias for types.TypeParam +type TypeParam = types.TypeParam + +// TypeParamList is an alias for types.TypeParamList +type TypeParamList = types.TypeParamList + +// TypeList is an alias for types.TypeList +type TypeList = types.TypeList + +// NewTypeParam calls types.NewTypeParam. +func NewTypeParam(name *types.TypeName, constraint types.Type) *TypeParam { + return types.NewTypeParam(name, constraint) +} + +// SetTypeParamConstraint calls tparam.SetConstraint(constraint). +func SetTypeParamConstraint(tparam *TypeParam, constraint types.Type) { + tparam.SetConstraint(constraint) +} + +// NewSignatureType calls types.NewSignatureType. +func NewSignatureType(recv *types.Var, recvTypeParams, typeParams []*TypeParam, params, results *types.Tuple, variadic bool) *types.Signature { + return types.NewSignatureType(recv, recvTypeParams, typeParams, params, results, variadic) +} + +// ForSignature returns sig.TypeParams() +func ForSignature(sig *types.Signature) *TypeParamList { + return sig.TypeParams() +} + +// RecvTypeParams returns sig.RecvTypeParams(). +func RecvTypeParams(sig *types.Signature) *TypeParamList { + return sig.RecvTypeParams() +} + +// IsComparable calls iface.IsComparable(). +func IsComparable(iface *types.Interface) bool { + return iface.IsComparable() +} + +// IsMethodSet calls iface.IsMethodSet(). +func IsMethodSet(iface *types.Interface) bool { + return iface.IsMethodSet() +} + +// IsImplicit calls iface.IsImplicit(). +func IsImplicit(iface *types.Interface) bool { + return iface.IsImplicit() +} + +// MarkImplicit calls iface.MarkImplicit(). +func MarkImplicit(iface *types.Interface) { + iface.MarkImplicit() +} + +// ForNamed extracts the (possibly empty) type parameter object list from +// named. +func ForNamed(named *types.Named) *TypeParamList { + return named.TypeParams() +} + +// SetForNamed sets the type params tparams on n. Each tparam must be of +// dynamic type *types.TypeParam. +func SetForNamed(n *types.Named, tparams []*TypeParam) { + n.SetTypeParams(tparams) +} + +// NamedTypeArgs returns named.TypeArgs(). +func NamedTypeArgs(named *types.Named) *TypeList { + return named.TypeArgs() +} + +// NamedTypeOrigin returns named.Orig(). +func NamedTypeOrigin(named *types.Named) types.Type { + return named.Origin() +} + +// Term is an alias for types.Term. +type Term = types.Term + +// NewTerm calls types.NewTerm. +func NewTerm(tilde bool, typ types.Type) *Term { + return types.NewTerm(tilde, typ) +} + +// Union is an alias for types.Union +type Union = types.Union + +// NewUnion calls types.NewUnion. +func NewUnion(terms []*Term) *Union { + return types.NewUnion(terms) +} + +// InitInstanceInfo initializes info to record information about type and +// function instances. +func InitInstanceInfo(info *types.Info) { + info.Instances = make(map[*ast.Ident]types.Instance) +} + +// Instance is an alias for types.Instance. +type Instance = types.Instance + +// GetInstances returns info.Instances. +func GetInstances(info *types.Info) map[*ast.Ident]Instance { + return info.Instances +} + +// Context is an alias for types.Context. +type Context = types.Context + +// NewContext calls types.NewContext. +func NewContext() *Context { + return types.NewContext() +} + +// Instantiate calls types.Instantiate. +func Instantiate(ctxt *Context, typ types.Type, targs []types.Type, validate bool) (types.Type, error) { + return types.Instantiate(ctxt, typ, targs, validate) +} diff --git a/vendor/golang.org/x/tools/internal/typeparams/typeterm.go b/vendor/golang.org/x/tools/internal/typeparams/typeterm.go new file mode 100644 index 0000000..7ddee28 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typeparams/typeterm.go @@ -0,0 +1,170 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Code generated by copytermlist.go DO NOT EDIT. + +package typeparams + +import "go/types" + +// A term describes elementary type sets: +// +// βˆ…: (*term)(nil) == βˆ… // set of no types (empty set) +// 𝓀: &term{} == 𝓀 // set of all types (𝓀niverse) +// T: &term{false, T} == {T} // set of type T +// ~t: &term{true, t} == {t' | under(t') == t} // set of types with underlying type t +// +type term struct { + tilde bool // valid if typ != nil + typ types.Type +} + +func (x *term) String() string { + switch { + case x == nil: + return "βˆ…" + case x.typ == nil: + return "𝓀" + case x.tilde: + return "~" + x.typ.String() + default: + return x.typ.String() + } +} + +// equal reports whether x and y represent the same type set. +func (x *term) equal(y *term) bool { + // easy cases + switch { + case x == nil || y == nil: + return x == y + case x.typ == nil || y.typ == nil: + return x.typ == y.typ + } + // βˆ… βŠ‚ x, y βŠ‚ 𝓀 + + return x.tilde == y.tilde && types.Identical(x.typ, y.typ) +} + +// union returns the union x βˆͺ y: zero, one, or two non-nil terms. +func (x *term) union(y *term) (_, _ *term) { + // easy cases + switch { + case x == nil && y == nil: + return nil, nil // βˆ… βˆͺ βˆ… == βˆ… + case x == nil: + return y, nil // βˆ… βˆͺ y == y + case y == nil: + return x, nil // x βˆͺ βˆ… == x + case x.typ == nil: + return x, nil // 𝓀 βˆͺ y == 𝓀 + case y.typ == nil: + return y, nil // x βˆͺ 𝓀 == 𝓀 + } + // βˆ… βŠ‚ x, y βŠ‚ 𝓀 + + if x.disjoint(y) { + return x, y // x βˆͺ y == (x, y) if x ∩ y == βˆ… + } + // x.typ == y.typ + + // ~t βˆͺ ~t == ~t + // ~t βˆͺ T == ~t + // T βˆͺ ~t == ~t + // T βˆͺ T == T + if x.tilde || !y.tilde { + return x, nil + } + return y, nil +} + +// intersect returns the intersection x ∩ y. +func (x *term) intersect(y *term) *term { + // easy cases + switch { + case x == nil || y == nil: + return nil // βˆ… ∩ y == βˆ… and ∩ βˆ… == βˆ… + case x.typ == nil: + return y // 𝓀 ∩ y == y + case y.typ == nil: + return x // x ∩ 𝓀 == x + } + // βˆ… βŠ‚ x, y βŠ‚ 𝓀 + + if x.disjoint(y) { + return nil // x ∩ y == βˆ… if x ∩ y == βˆ… + } + // x.typ == y.typ + + // ~t ∩ ~t == ~t + // ~t ∩ T == T + // T ∩ ~t == T + // T ∩ T == T + if !x.tilde || y.tilde { + return x + } + return y +} + +// includes reports whether t ∈ x. +func (x *term) includes(t types.Type) bool { + // easy cases + switch { + case x == nil: + return false // t ∈ βˆ… == false + case x.typ == nil: + return true // t ∈ 𝓀 == true + } + // βˆ… βŠ‚ x βŠ‚ 𝓀 + + u := t + if x.tilde { + u = under(u) + } + return types.Identical(x.typ, u) +} + +// subsetOf reports whether x βŠ† y. +func (x *term) subsetOf(y *term) bool { + // easy cases + switch { + case x == nil: + return true // βˆ… βŠ† y == true + case y == nil: + return false // x βŠ† βˆ… == false since x != βˆ… + case y.typ == nil: + return true // x βŠ† 𝓀 == true + case x.typ == nil: + return false // 𝓀 βŠ† y == false since y != 𝓀 + } + // βˆ… βŠ‚ x, y βŠ‚ 𝓀 + + if x.disjoint(y) { + return false // x βŠ† y == false if x ∩ y == βˆ… + } + // x.typ == y.typ + + // ~t βŠ† ~t == true + // ~t βŠ† T == false + // T βŠ† ~t == true + // T βŠ† T == true + return !x.tilde || y.tilde +} + +// disjoint reports whether x ∩ y == βˆ…. +// x.typ and y.typ must not be nil. +func (x *term) disjoint(y *term) bool { + if debug && (x.typ == nil || y.typ == nil) { + panic("invalid argument(s)") + } + ux := x.typ + if y.tilde { + ux = under(ux) + } + uy := y.typ + if x.tilde { + uy = under(uy) + } + return !types.Identical(ux, uy) +} diff --git a/vendor/golang.org/x/tools/internal/typesinternal/errorcode.go b/vendor/golang.org/x/tools/internal/typesinternal/errorcode.go new file mode 100644 index 0000000..d38ee3c --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typesinternal/errorcode.go @@ -0,0 +1,1526 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package typesinternal + +//go:generate stringer -type=ErrorCode + +type ErrorCode int + +// This file defines the error codes that can be produced during type-checking. +// Collectively, these codes provide an identifier that may be used to +// implement special handling for certain types of errors. +// +// Error codes should be fine-grained enough that the exact nature of the error +// can be easily determined, but coarse enough that they are not an +// implementation detail of the type checking algorithm. As a rule-of-thumb, +// errors should be considered equivalent if there is a theoretical refactoring +// of the type checker in which they are emitted in exactly one place. For +// example, the type checker emits different error messages for "too many +// arguments" and "too few arguments", but one can imagine an alternative type +// checker where this check instead just emits a single "wrong number of +// arguments", so these errors should have the same code. +// +// Error code names should be as brief as possible while retaining accuracy and +// distinctiveness. In most cases names should start with an adjective +// describing the nature of the error (e.g. "invalid", "unused", "misplaced"), +// and end with a noun identifying the relevant language object. For example, +// "DuplicateDecl" or "InvalidSliceExpr". For brevity, naming follows the +// convention that "bad" implies a problem with syntax, and "invalid" implies a +// problem with types. + +const ( + _ ErrorCode = iota + + // Test is reserved for errors that only apply while in self-test mode. + Test + + /* package names */ + + // BlankPkgName occurs when a package name is the blank identifier "_". + // + // Per the spec: + // "The PackageName must not be the blank identifier." + BlankPkgName + + // MismatchedPkgName occurs when a file's package name doesn't match the + // package name already established by other files. + MismatchedPkgName + + // InvalidPkgUse occurs when a package identifier is used outside of a + // selector expression. + // + // Example: + // import "fmt" + // + // var _ = fmt + InvalidPkgUse + + /* imports */ + + // BadImportPath occurs when an import path is not valid. + BadImportPath + + // BrokenImport occurs when importing a package fails. + // + // Example: + // import "amissingpackage" + BrokenImport + + // ImportCRenamed occurs when the special import "C" is renamed. "C" is a + // pseudo-package, and must not be renamed. + // + // Example: + // import _ "C" + ImportCRenamed + + // UnusedImport occurs when an import is unused. + // + // Example: + // import "fmt" + // + // func main() {} + UnusedImport + + /* initialization */ + + // InvalidInitCycle occurs when an invalid cycle is detected within the + // initialization graph. + // + // Example: + // var x int = f() + // + // func f() int { return x } + InvalidInitCycle + + /* decls */ + + // DuplicateDecl occurs when an identifier is declared multiple times. + // + // Example: + // var x = 1 + // var x = 2 + DuplicateDecl + + // InvalidDeclCycle occurs when a declaration cycle is not valid. + // + // Example: + // import "unsafe" + // + // type T struct { + // a [n]int + // } + // + // var n = unsafe.Sizeof(T{}) + InvalidDeclCycle + + // InvalidTypeCycle occurs when a cycle in type definitions results in a + // type that is not well-defined. + // + // Example: + // import "unsafe" + // + // type T [unsafe.Sizeof(T{})]int + InvalidTypeCycle + + /* decls > const */ + + // InvalidConstInit occurs when a const declaration has a non-constant + // initializer. + // + // Example: + // var x int + // const _ = x + InvalidConstInit + + // InvalidConstVal occurs when a const value cannot be converted to its + // target type. + // + // TODO(findleyr): this error code and example are not very clear. Consider + // removing it. + // + // Example: + // const _ = 1 << "hello" + InvalidConstVal + + // InvalidConstType occurs when the underlying type in a const declaration + // is not a valid constant type. + // + // Example: + // const c *int = 4 + InvalidConstType + + /* decls > var (+ other variable assignment codes) */ + + // UntypedNil occurs when the predeclared (untyped) value nil is used to + // initialize a variable declared without an explicit type. + // + // Example: + // var x = nil + UntypedNil + + // WrongAssignCount occurs when the number of values on the right-hand side + // of an assignment or or initialization expression does not match the number + // of variables on the left-hand side. + // + // Example: + // var x = 1, 2 + WrongAssignCount + + // UnassignableOperand occurs when the left-hand side of an assignment is + // not assignable. + // + // Example: + // func f() { + // const c = 1 + // c = 2 + // } + UnassignableOperand + + // NoNewVar occurs when a short variable declaration (':=') does not declare + // new variables. + // + // Example: + // func f() { + // x := 1 + // x := 2 + // } + NoNewVar + + // MultiValAssignOp occurs when an assignment operation (+=, *=, etc) does + // not have single-valued left-hand or right-hand side. + // + // Per the spec: + // "In assignment operations, both the left- and right-hand expression lists + // must contain exactly one single-valued expression" + // + // Example: + // func f() int { + // x, y := 1, 2 + // x, y += 1 + // return x + y + // } + MultiValAssignOp + + // InvalidIfaceAssign occurs when a value of type T is used as an + // interface, but T does not implement a method of the expected interface. + // + // Example: + // type I interface { + // f() + // } + // + // type T int + // + // var x I = T(1) + InvalidIfaceAssign + + // InvalidChanAssign occurs when a chan assignment is invalid. + // + // Per the spec, a value x is assignable to a channel type T if: + // "x is a bidirectional channel value, T is a channel type, x's type V and + // T have identical element types, and at least one of V or T is not a + // defined type." + // + // Example: + // type T1 chan int + // type T2 chan int + // + // var x T1 + // // Invalid assignment because both types are named + // var _ T2 = x + InvalidChanAssign + + // IncompatibleAssign occurs when the type of the right-hand side expression + // in an assignment cannot be assigned to the type of the variable being + // assigned. + // + // Example: + // var x []int + // var _ int = x + IncompatibleAssign + + // UnaddressableFieldAssign occurs when trying to assign to a struct field + // in a map value. + // + // Example: + // func f() { + // m := make(map[string]struct{i int}) + // m["foo"].i = 42 + // } + UnaddressableFieldAssign + + /* decls > type (+ other type expression codes) */ + + // NotAType occurs when the identifier used as the underlying type in a type + // declaration or the right-hand side of a type alias does not denote a type. + // + // Example: + // var S = 2 + // + // type T S + NotAType + + // InvalidArrayLen occurs when an array length is not a constant value. + // + // Example: + // var n = 3 + // var _ = [n]int{} + InvalidArrayLen + + // BlankIfaceMethod occurs when a method name is '_'. + // + // Per the spec: + // "The name of each explicitly specified method must be unique and not + // blank." + // + // Example: + // type T interface { + // _(int) + // } + BlankIfaceMethod + + // IncomparableMapKey occurs when a map key type does not support the == and + // != operators. + // + // Per the spec: + // "The comparison operators == and != must be fully defined for operands of + // the key type; thus the key type must not be a function, map, or slice." + // + // Example: + // var x map[T]int + // + // type T []int + IncomparableMapKey + + // InvalidIfaceEmbed occurs when a non-interface type is embedded in an + // interface. + // + // Example: + // type T struct {} + // + // func (T) m() + // + // type I interface { + // T + // } + InvalidIfaceEmbed + + // InvalidPtrEmbed occurs when an embedded field is of the pointer form *T, + // and T itself is itself a pointer, an unsafe.Pointer, or an interface. + // + // Per the spec: + // "An embedded field must be specified as a type name T or as a pointer to + // a non-interface type name *T, and T itself may not be a pointer type." + // + // Example: + // type T *int + // + // type S struct { + // *T + // } + InvalidPtrEmbed + + /* decls > func and method */ + + // BadRecv occurs when a method declaration does not have exactly one + // receiver parameter. + // + // Example: + // func () _() {} + BadRecv + + // InvalidRecv occurs when a receiver type expression is not of the form T + // or *T, or T is a pointer type. + // + // Example: + // type T struct {} + // + // func (**T) m() {} + InvalidRecv + + // DuplicateFieldAndMethod occurs when an identifier appears as both a field + // and method name. + // + // Example: + // type T struct { + // m int + // } + // + // func (T) m() {} + DuplicateFieldAndMethod + + // DuplicateMethod occurs when two methods on the same receiver type have + // the same name. + // + // Example: + // type T struct {} + // func (T) m() {} + // func (T) m(i int) int { return i } + DuplicateMethod + + /* decls > special */ + + // InvalidBlank occurs when a blank identifier is used as a value or type. + // + // Per the spec: + // "The blank identifier may appear as an operand only on the left-hand side + // of an assignment." + // + // Example: + // var x = _ + InvalidBlank + + // InvalidIota occurs when the predeclared identifier iota is used outside + // of a constant declaration. + // + // Example: + // var x = iota + InvalidIota + + // MissingInitBody occurs when an init function is missing its body. + // + // Example: + // func init() + MissingInitBody + + // InvalidInitSig occurs when an init function declares parameters or + // results. + // + // Example: + // func init() int { return 1 } + InvalidInitSig + + // InvalidInitDecl occurs when init is declared as anything other than a + // function. + // + // Example: + // var init = 1 + InvalidInitDecl + + // InvalidMainDecl occurs when main is declared as anything other than a + // function, in a main package. + InvalidMainDecl + + /* exprs */ + + // TooManyValues occurs when a function returns too many values for the + // expression context in which it is used. + // + // Example: + // func ReturnTwo() (int, int) { + // return 1, 2 + // } + // + // var x = ReturnTwo() + TooManyValues + + // NotAnExpr occurs when a type expression is used where a value expression + // is expected. + // + // Example: + // type T struct {} + // + // func f() { + // T + // } + NotAnExpr + + /* exprs > const */ + + // TruncatedFloat occurs when a float constant is truncated to an integer + // value. + // + // Example: + // var _ int = 98.6 + TruncatedFloat + + // NumericOverflow occurs when a numeric constant overflows its target type. + // + // Example: + // var x int8 = 1000 + NumericOverflow + + /* exprs > operation */ + + // UndefinedOp occurs when an operator is not defined for the type(s) used + // in an operation. + // + // Example: + // var c = "a" - "b" + UndefinedOp + + // MismatchedTypes occurs when operand types are incompatible in a binary + // operation. + // + // Example: + // var a = "hello" + // var b = 1 + // var c = a - b + MismatchedTypes + + // DivByZero occurs when a division operation is provable at compile + // time to be a division by zero. + // + // Example: + // const divisor = 0 + // var x int = 1/divisor + DivByZero + + // NonNumericIncDec occurs when an increment or decrement operator is + // applied to a non-numeric value. + // + // Example: + // func f() { + // var c = "c" + // c++ + // } + NonNumericIncDec + + /* exprs > ptr */ + + // UnaddressableOperand occurs when the & operator is applied to an + // unaddressable expression. + // + // Example: + // var x = &1 + UnaddressableOperand + + // InvalidIndirection occurs when a non-pointer value is indirected via the + // '*' operator. + // + // Example: + // var x int + // var y = *x + InvalidIndirection + + /* exprs > [] */ + + // NonIndexableOperand occurs when an index operation is applied to a value + // that cannot be indexed. + // + // Example: + // var x = 1 + // var y = x[1] + NonIndexableOperand + + // InvalidIndex occurs when an index argument is not of integer type, + // negative, or out-of-bounds. + // + // Example: + // var s = [...]int{1,2,3} + // var x = s[5] + // + // Example: + // var s = []int{1,2,3} + // var _ = s[-1] + // + // Example: + // var s = []int{1,2,3} + // var i string + // var _ = s[i] + InvalidIndex + + // SwappedSliceIndices occurs when constant indices in a slice expression + // are decreasing in value. + // + // Example: + // var _ = []int{1,2,3}[2:1] + SwappedSliceIndices + + /* operators > slice */ + + // NonSliceableOperand occurs when a slice operation is applied to a value + // whose type is not sliceable, or is unaddressable. + // + // Example: + // var x = [...]int{1, 2, 3}[:1] + // + // Example: + // var x = 1 + // var y = 1[:1] + NonSliceableOperand + + // InvalidSliceExpr occurs when a three-index slice expression (a[x:y:z]) is + // applied to a string. + // + // Example: + // var s = "hello" + // var x = s[1:2:3] + InvalidSliceExpr + + /* exprs > shift */ + + // InvalidShiftCount occurs when the right-hand side of a shift operation is + // either non-integer, negative, or too large. + // + // Example: + // var ( + // x string + // y int = 1 << x + // ) + InvalidShiftCount + + // InvalidShiftOperand occurs when the shifted operand is not an integer. + // + // Example: + // var s = "hello" + // var x = s << 2 + InvalidShiftOperand + + /* exprs > chan */ + + // InvalidReceive occurs when there is a channel receive from a value that + // is either not a channel, or is a send-only channel. + // + // Example: + // func f() { + // var x = 1 + // <-x + // } + InvalidReceive + + // InvalidSend occurs when there is a channel send to a value that is not a + // channel, or is a receive-only channel. + // + // Example: + // func f() { + // var x = 1 + // x <- "hello!" + // } + InvalidSend + + /* exprs > literal */ + + // DuplicateLitKey occurs when an index is duplicated in a slice, array, or + // map literal. + // + // Example: + // var _ = []int{0:1, 0:2} + // + // Example: + // var _ = map[string]int{"a": 1, "a": 2} + DuplicateLitKey + + // MissingLitKey occurs when a map literal is missing a key expression. + // + // Example: + // var _ = map[string]int{1} + MissingLitKey + + // InvalidLitIndex occurs when the key in a key-value element of a slice or + // array literal is not an integer constant. + // + // Example: + // var i = 0 + // var x = []string{i: "world"} + InvalidLitIndex + + // OversizeArrayLit occurs when an array literal exceeds its length. + // + // Example: + // var _ = [2]int{1,2,3} + OversizeArrayLit + + // MixedStructLit occurs when a struct literal contains a mix of positional + // and named elements. + // + // Example: + // var _ = struct{i, j int}{i: 1, 2} + MixedStructLit + + // InvalidStructLit occurs when a positional struct literal has an incorrect + // number of values. + // + // Example: + // var _ = struct{i, j int}{1,2,3} + InvalidStructLit + + // MissingLitField occurs when a struct literal refers to a field that does + // not exist on the struct type. + // + // Example: + // var _ = struct{i int}{j: 2} + MissingLitField + + // DuplicateLitField occurs when a struct literal contains duplicated + // fields. + // + // Example: + // var _ = struct{i int}{i: 1, i: 2} + DuplicateLitField + + // UnexportedLitField occurs when a positional struct literal implicitly + // assigns an unexported field of an imported type. + UnexportedLitField + + // InvalidLitField occurs when a field name is not a valid identifier. + // + // Example: + // var _ = struct{i int}{1: 1} + InvalidLitField + + // UntypedLit occurs when a composite literal omits a required type + // identifier. + // + // Example: + // type outer struct{ + // inner struct { i int } + // } + // + // var _ = outer{inner: {1}} + UntypedLit + + // InvalidLit occurs when a composite literal expression does not match its + // type. + // + // Example: + // type P *struct{ + // x int + // } + // var _ = P {} + InvalidLit + + /* exprs > selector */ + + // AmbiguousSelector occurs when a selector is ambiguous. + // + // Example: + // type E1 struct { i int } + // type E2 struct { i int } + // type T struct { E1; E2 } + // + // var x T + // var _ = x.i + AmbiguousSelector + + // UndeclaredImportedName occurs when a package-qualified identifier is + // undeclared by the imported package. + // + // Example: + // import "go/types" + // + // var _ = types.NotAnActualIdentifier + UndeclaredImportedName + + // UnexportedName occurs when a selector refers to an unexported identifier + // of an imported package. + // + // Example: + // import "reflect" + // + // type _ reflect.flag + UnexportedName + + // UndeclaredName occurs when an identifier is not declared in the current + // scope. + // + // Example: + // var x T + UndeclaredName + + // MissingFieldOrMethod occurs when a selector references a field or method + // that does not exist. + // + // Example: + // type T struct {} + // + // var x = T{}.f + MissingFieldOrMethod + + /* exprs > ... */ + + // BadDotDotDotSyntax occurs when a "..." occurs in a context where it is + // not valid. + // + // Example: + // var _ = map[int][...]int{0: {}} + BadDotDotDotSyntax + + // NonVariadicDotDotDot occurs when a "..." is used on the final argument to + // a non-variadic function. + // + // Example: + // func printArgs(s []string) { + // for _, a := range s { + // println(a) + // } + // } + // + // func f() { + // s := []string{"a", "b", "c"} + // printArgs(s...) + // } + NonVariadicDotDotDot + + // MisplacedDotDotDot occurs when a "..." is used somewhere other than the + // final argument to a function call. + // + // Example: + // func printArgs(args ...int) { + // for _, a := range args { + // println(a) + // } + // } + // + // func f() { + // a := []int{1,2,3} + // printArgs(0, a...) + // } + MisplacedDotDotDot + + // InvalidDotDotDotOperand occurs when a "..." operator is applied to a + // single-valued operand. + // + // Example: + // func printArgs(args ...int) { + // for _, a := range args { + // println(a) + // } + // } + // + // func f() { + // a := 1 + // printArgs(a...) + // } + // + // Example: + // func args() (int, int) { + // return 1, 2 + // } + // + // func printArgs(args ...int) { + // for _, a := range args { + // println(a) + // } + // } + // + // func g() { + // printArgs(args()...) + // } + InvalidDotDotDotOperand + + // InvalidDotDotDot occurs when a "..." is used in a non-variadic built-in + // function. + // + // Example: + // var s = []int{1, 2, 3} + // var l = len(s...) + InvalidDotDotDot + + /* exprs > built-in */ + + // UncalledBuiltin occurs when a built-in function is used as a + // function-valued expression, instead of being called. + // + // Per the spec: + // "The built-in functions do not have standard Go types, so they can only + // appear in call expressions; they cannot be used as function values." + // + // Example: + // var _ = copy + UncalledBuiltin + + // InvalidAppend occurs when append is called with a first argument that is + // not a slice. + // + // Example: + // var _ = append(1, 2) + InvalidAppend + + // InvalidCap occurs when an argument to the cap built-in function is not of + // supported type. + // + // See https://golang.org/ref/spec#Lengthand_capacity for information on + // which underlying types are supported as arguments to cap and len. + // + // Example: + // var s = 2 + // var x = cap(s) + InvalidCap + + // InvalidClose occurs when close(...) is called with an argument that is + // not of channel type, or that is a receive-only channel. + // + // Example: + // func f() { + // var x int + // close(x) + // } + InvalidClose + + // InvalidCopy occurs when the arguments are not of slice type or do not + // have compatible type. + // + // See https://golang.org/ref/spec#Appendingand_copying_slices for more + // information on the type requirements for the copy built-in. + // + // Example: + // func f() { + // var x []int + // y := []int64{1,2,3} + // copy(x, y) + // } + InvalidCopy + + // InvalidComplex occurs when the complex built-in function is called with + // arguments with incompatible types. + // + // Example: + // var _ = complex(float32(1), float64(2)) + InvalidComplex + + // InvalidDelete occurs when the delete built-in function is called with a + // first argument that is not a map. + // + // Example: + // func f() { + // m := "hello" + // delete(m, "e") + // } + InvalidDelete + + // InvalidImag occurs when the imag built-in function is called with an + // argument that does not have complex type. + // + // Example: + // var _ = imag(int(1)) + InvalidImag + + // InvalidLen occurs when an argument to the len built-in function is not of + // supported type. + // + // See https://golang.org/ref/spec#Lengthand_capacity for information on + // which underlying types are supported as arguments to cap and len. + // + // Example: + // var s = 2 + // var x = len(s) + InvalidLen + + // SwappedMakeArgs occurs when make is called with three arguments, and its + // length argument is larger than its capacity argument. + // + // Example: + // var x = make([]int, 3, 2) + SwappedMakeArgs + + // InvalidMake occurs when make is called with an unsupported type argument. + // + // See https://golang.org/ref/spec#Makingslices_maps_and_channels for + // information on the types that may be created using make. + // + // Example: + // var x = make(int) + InvalidMake + + // InvalidReal occurs when the real built-in function is called with an + // argument that does not have complex type. + // + // Example: + // var _ = real(int(1)) + InvalidReal + + /* exprs > assertion */ + + // InvalidAssert occurs when a type assertion is applied to a + // value that is not of interface type. + // + // Example: + // var x = 1 + // var _ = x.(float64) + InvalidAssert + + // ImpossibleAssert occurs for a type assertion x.(T) when the value x of + // interface cannot have dynamic type T, due to a missing or mismatching + // method on T. + // + // Example: + // type T int + // + // func (t *T) m() int { return int(*t) } + // + // type I interface { m() int } + // + // var x I + // var _ = x.(T) + ImpossibleAssert + + /* exprs > conversion */ + + // InvalidConversion occurs when the argument type cannot be converted to the + // target. + // + // See https://golang.org/ref/spec#Conversions for the rules of + // convertibility. + // + // Example: + // var x float64 + // var _ = string(x) + InvalidConversion + + // InvalidUntypedConversion occurs when an there is no valid implicit + // conversion from an untyped value satisfying the type constraints of the + // context in which it is used. + // + // Example: + // var _ = 1 + "" + InvalidUntypedConversion + + /* offsetof */ + + // BadOffsetofSyntax occurs when unsafe.Offsetof is called with an argument + // that is not a selector expression. + // + // Example: + // import "unsafe" + // + // var x int + // var _ = unsafe.Offsetof(x) + BadOffsetofSyntax + + // InvalidOffsetof occurs when unsafe.Offsetof is called with a method + // selector, rather than a field selector, or when the field is embedded via + // a pointer. + // + // Per the spec: + // + // "If f is an embedded field, it must be reachable without pointer + // indirections through fields of the struct. " + // + // Example: + // import "unsafe" + // + // type T struct { f int } + // type S struct { *T } + // var s S + // var _ = unsafe.Offsetof(s.f) + // + // Example: + // import "unsafe" + // + // type S struct{} + // + // func (S) m() {} + // + // var s S + // var _ = unsafe.Offsetof(s.m) + InvalidOffsetof + + /* control flow > scope */ + + // UnusedExpr occurs when a side-effect free expression is used as a + // statement. Such a statement has no effect. + // + // Example: + // func f(i int) { + // i*i + // } + UnusedExpr + + // UnusedVar occurs when a variable is declared but unused. + // + // Example: + // func f() { + // x := 1 + // } + UnusedVar + + // MissingReturn occurs when a function with results is missing a return + // statement. + // + // Example: + // func f() int {} + MissingReturn + + // WrongResultCount occurs when a return statement returns an incorrect + // number of values. + // + // Example: + // func ReturnOne() int { + // return 1, 2 + // } + WrongResultCount + + // OutOfScopeResult occurs when the name of a value implicitly returned by + // an empty return statement is shadowed in a nested scope. + // + // Example: + // func factor(n int) (i int) { + // for i := 2; i < n; i++ { + // if n%i == 0 { + // return + // } + // } + // return 0 + // } + OutOfScopeResult + + /* control flow > if */ + + // InvalidCond occurs when an if condition is not a boolean expression. + // + // Example: + // func checkReturn(i int) { + // if i { + // panic("non-zero return") + // } + // } + InvalidCond + + /* control flow > for */ + + // InvalidPostDecl occurs when there is a declaration in a for-loop post + // statement. + // + // Example: + // func f() { + // for i := 0; i < 10; j := 0 {} + // } + InvalidPostDecl + + // InvalidChanRange occurs when a send-only channel used in a range + // expression. + // + // Example: + // func sum(c chan<- int) { + // s := 0 + // for i := range c { + // s += i + // } + // } + InvalidChanRange + + // InvalidIterVar occurs when two iteration variables are used while ranging + // over a channel. + // + // Example: + // func f(c chan int) { + // for k, v := range c { + // println(k, v) + // } + // } + InvalidIterVar + + // InvalidRangeExpr occurs when the type of a range expression is not array, + // slice, string, map, or channel. + // + // Example: + // func f(i int) { + // for j := range i { + // println(j) + // } + // } + InvalidRangeExpr + + /* control flow > switch */ + + // MisplacedBreak occurs when a break statement is not within a for, switch, + // or select statement of the innermost function definition. + // + // Example: + // func f() { + // break + // } + MisplacedBreak + + // MisplacedContinue occurs when a continue statement is not within a for + // loop of the innermost function definition. + // + // Example: + // func sumeven(n int) int { + // proceed := func() { + // continue + // } + // sum := 0 + // for i := 1; i <= n; i++ { + // if i % 2 != 0 { + // proceed() + // } + // sum += i + // } + // return sum + // } + MisplacedContinue + + // MisplacedFallthrough occurs when a fallthrough statement is not within an + // expression switch. + // + // Example: + // func typename(i interface{}) string { + // switch i.(type) { + // case int64: + // fallthrough + // case int: + // return "int" + // } + // return "unsupported" + // } + MisplacedFallthrough + + // DuplicateCase occurs when a type or expression switch has duplicate + // cases. + // + // Example: + // func printInt(i int) { + // switch i { + // case 1: + // println("one") + // case 1: + // println("One") + // } + // } + DuplicateCase + + // DuplicateDefault occurs when a type or expression switch has multiple + // default clauses. + // + // Example: + // func printInt(i int) { + // switch i { + // case 1: + // println("one") + // default: + // println("One") + // default: + // println("1") + // } + // } + DuplicateDefault + + // BadTypeKeyword occurs when a .(type) expression is used anywhere other + // than a type switch. + // + // Example: + // type I interface { + // m() + // } + // var t I + // var _ = t.(type) + BadTypeKeyword + + // InvalidTypeSwitch occurs when .(type) is used on an expression that is + // not of interface type. + // + // Example: + // func f(i int) { + // switch x := i.(type) {} + // } + InvalidTypeSwitch + + // InvalidExprSwitch occurs when a switch expression is not comparable. + // + // Example: + // func _() { + // var a struct{ _ func() } + // switch a /* ERROR cannot switch on a */ { + // } + // } + InvalidExprSwitch + + /* control flow > select */ + + // InvalidSelectCase occurs when a select case is not a channel send or + // receive. + // + // Example: + // func checkChan(c <-chan int) bool { + // select { + // case c: + // return true + // default: + // return false + // } + // } + InvalidSelectCase + + /* control flow > labels and jumps */ + + // UndeclaredLabel occurs when an undeclared label is jumped to. + // + // Example: + // func f() { + // goto L + // } + UndeclaredLabel + + // DuplicateLabel occurs when a label is declared more than once. + // + // Example: + // func f() int { + // L: + // L: + // return 1 + // } + DuplicateLabel + + // MisplacedLabel occurs when a break or continue label is not on a for, + // switch, or select statement. + // + // Example: + // func f() { + // L: + // a := []int{1,2,3} + // for _, e := range a { + // if e > 10 { + // break L + // } + // println(a) + // } + // } + MisplacedLabel + + // UnusedLabel occurs when a label is declared but not used. + // + // Example: + // func f() { + // L: + // } + UnusedLabel + + // JumpOverDecl occurs when a label jumps over a variable declaration. + // + // Example: + // func f() int { + // goto L + // x := 2 + // L: + // x++ + // return x + // } + JumpOverDecl + + // JumpIntoBlock occurs when a forward jump goes to a label inside a nested + // block. + // + // Example: + // func f(x int) { + // goto L + // if x > 0 { + // L: + // print("inside block") + // } + // } + JumpIntoBlock + + /* control flow > calls */ + + // InvalidMethodExpr occurs when a pointer method is called but the argument + // is not addressable. + // + // Example: + // type T struct {} + // + // func (*T) m() int { return 1 } + // + // var _ = T.m(T{}) + InvalidMethodExpr + + // WrongArgCount occurs when too few or too many arguments are passed by a + // function call. + // + // Example: + // func f(i int) {} + // var x = f() + WrongArgCount + + // InvalidCall occurs when an expression is called that is not of function + // type. + // + // Example: + // var x = "x" + // var y = x() + InvalidCall + + /* control flow > suspended */ + + // UnusedResults occurs when a restricted expression-only built-in function + // is suspended via go or defer. Such a suspension discards the results of + // these side-effect free built-in functions, and therefore is ineffectual. + // + // Example: + // func f(a []int) int { + // defer len(a) + // return i + // } + UnusedResults + + // InvalidDefer occurs when a deferred expression is not a function call, + // for example if the expression is a type conversion. + // + // Example: + // func f(i int) int { + // defer int32(i) + // return i + // } + InvalidDefer + + // InvalidGo occurs when a go expression is not a function call, for example + // if the expression is a type conversion. + // + // Example: + // func f(i int) int { + // go int32(i) + // return i + // } + InvalidGo + + // All codes below were added in Go 1.17. + + /* decl */ + + // BadDecl occurs when a declaration has invalid syntax. + BadDecl + + // RepeatedDecl occurs when an identifier occurs more than once on the left + // hand side of a short variable declaration. + // + // Example: + // func _() { + // x, y, y := 1, 2, 3 + // } + RepeatedDecl + + /* unsafe */ + + // InvalidUnsafeAdd occurs when unsafe.Add is called with a + // length argument that is not of integer type. + // + // Example: + // import "unsafe" + // + // var p unsafe.Pointer + // var _ = unsafe.Add(p, float64(1)) + InvalidUnsafeAdd + + // InvalidUnsafeSlice occurs when unsafe.Slice is called with a + // pointer argument that is not of pointer type or a length argument + // that is not of integer type, negative, or out of bounds. + // + // Example: + // import "unsafe" + // + // var x int + // var _ = unsafe.Slice(x, 1) + // + // Example: + // import "unsafe" + // + // var x int + // var _ = unsafe.Slice(&x, float64(1)) + // + // Example: + // import "unsafe" + // + // var x int + // var _ = unsafe.Slice(&x, -1) + // + // Example: + // import "unsafe" + // + // var x int + // var _ = unsafe.Slice(&x, uint64(1) << 63) + InvalidUnsafeSlice + + // All codes below were added in Go 1.18. + + /* features */ + + // UnsupportedFeature occurs when a language feature is used that is not + // supported at this Go version. + UnsupportedFeature + + /* type params */ + + // NotAGenericType occurs when a non-generic type is used where a generic + // type is expected: in type or function instantiation. + // + // Example: + // type T int + // + // var _ T[int] + NotAGenericType + + // WrongTypeArgCount occurs when a type or function is instantiated with an + // incorrent number of type arguments, including when a generic type or + // function is used without instantiation. + // + // Errors inolving failed type inference are assigned other error codes. + // + // Example: + // type T[p any] int + // + // var _ T[int, string] + // + // Example: + // func f[T any]() {} + // + // var x = f + WrongTypeArgCount + + // CannotInferTypeArgs occurs when type or function type argument inference + // fails to infer all type arguments. + // + // Example: + // func f[T any]() {} + // + // func _() { + // f() + // } + // + // Example: + // type N[P, Q any] struct{} + // + // var _ N[int] + CannotInferTypeArgs + + // InvalidTypeArg occurs when a type argument does not satisfy its + // corresponding type parameter constraints. + // + // Example: + // type T[P ~int] struct{} + // + // var _ T[string] + InvalidTypeArg // arguments? InferenceFailed + + // InvalidInstanceCycle occurs when an invalid cycle is detected + // within the instantiation graph. + // + // Example: + // func f[T any]() { f[*T]() } + InvalidInstanceCycle + + // InvalidUnion occurs when an embedded union or approximation element is + // not valid. + // + // Example: + // type _ interface { + // ~int | interface{ m() } + // } + InvalidUnion + + // MisplacedConstraintIface occurs when a constraint-type interface is used + // outside of constraint position. + // + // Example: + // type I interface { ~int } + // + // var _ I + MisplacedConstraintIface + + // InvalidMethodTypeParams occurs when methods have type parameters. + // + // It cannot be encountered with an AST parsed using go/parser. + InvalidMethodTypeParams + + // MisplacedTypeParam occurs when a type parameter is used in a place where + // it is not permitted. + // + // Example: + // type T[P any] P + // + // Example: + // type T[P any] struct{ *P } + MisplacedTypeParam +) diff --git a/vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go b/vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go new file mode 100644 index 0000000..de90e95 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typesinternal/errorcode_string.go @@ -0,0 +1,167 @@ +// Code generated by "stringer -type=ErrorCode"; DO NOT EDIT. + +package typesinternal + +import "strconv" + +func _() { + // An "invalid array index" compiler error signifies that the constant values have changed. + // Re-run the stringer command to generate them again. + var x [1]struct{} + _ = x[Test-1] + _ = x[BlankPkgName-2] + _ = x[MismatchedPkgName-3] + _ = x[InvalidPkgUse-4] + _ = x[BadImportPath-5] + _ = x[BrokenImport-6] + _ = x[ImportCRenamed-7] + _ = x[UnusedImport-8] + _ = x[InvalidInitCycle-9] + _ = x[DuplicateDecl-10] + _ = x[InvalidDeclCycle-11] + _ = x[InvalidTypeCycle-12] + _ = x[InvalidConstInit-13] + _ = x[InvalidConstVal-14] + _ = x[InvalidConstType-15] + _ = x[UntypedNil-16] + _ = x[WrongAssignCount-17] + _ = x[UnassignableOperand-18] + _ = x[NoNewVar-19] + _ = x[MultiValAssignOp-20] + _ = x[InvalidIfaceAssign-21] + _ = x[InvalidChanAssign-22] + _ = x[IncompatibleAssign-23] + _ = x[UnaddressableFieldAssign-24] + _ = x[NotAType-25] + _ = x[InvalidArrayLen-26] + _ = x[BlankIfaceMethod-27] + _ = x[IncomparableMapKey-28] + _ = x[InvalidIfaceEmbed-29] + _ = x[InvalidPtrEmbed-30] + _ = x[BadRecv-31] + _ = x[InvalidRecv-32] + _ = x[DuplicateFieldAndMethod-33] + _ = x[DuplicateMethod-34] + _ = x[InvalidBlank-35] + _ = x[InvalidIota-36] + _ = x[MissingInitBody-37] + _ = x[InvalidInitSig-38] + _ = x[InvalidInitDecl-39] + _ = x[InvalidMainDecl-40] + _ = x[TooManyValues-41] + _ = x[NotAnExpr-42] + _ = x[TruncatedFloat-43] + _ = x[NumericOverflow-44] + _ = x[UndefinedOp-45] + _ = x[MismatchedTypes-46] + _ = x[DivByZero-47] + _ = x[NonNumericIncDec-48] + _ = x[UnaddressableOperand-49] + _ = x[InvalidIndirection-50] + _ = x[NonIndexableOperand-51] + _ = x[InvalidIndex-52] + _ = x[SwappedSliceIndices-53] + _ = x[NonSliceableOperand-54] + _ = x[InvalidSliceExpr-55] + _ = x[InvalidShiftCount-56] + _ = x[InvalidShiftOperand-57] + _ = x[InvalidReceive-58] + _ = x[InvalidSend-59] + _ = x[DuplicateLitKey-60] + _ = x[MissingLitKey-61] + _ = x[InvalidLitIndex-62] + _ = x[OversizeArrayLit-63] + _ = x[MixedStructLit-64] + _ = x[InvalidStructLit-65] + _ = x[MissingLitField-66] + _ = x[DuplicateLitField-67] + _ = x[UnexportedLitField-68] + _ = x[InvalidLitField-69] + _ = x[UntypedLit-70] + _ = x[InvalidLit-71] + _ = x[AmbiguousSelector-72] + _ = x[UndeclaredImportedName-73] + _ = x[UnexportedName-74] + _ = x[UndeclaredName-75] + _ = x[MissingFieldOrMethod-76] + _ = x[BadDotDotDotSyntax-77] + _ = x[NonVariadicDotDotDot-78] + _ = x[MisplacedDotDotDot-79] + _ = x[InvalidDotDotDotOperand-80] + _ = x[InvalidDotDotDot-81] + _ = x[UncalledBuiltin-82] + _ = x[InvalidAppend-83] + _ = x[InvalidCap-84] + _ = x[InvalidClose-85] + _ = x[InvalidCopy-86] + _ = x[InvalidComplex-87] + _ = x[InvalidDelete-88] + _ = x[InvalidImag-89] + _ = x[InvalidLen-90] + _ = x[SwappedMakeArgs-91] + _ = x[InvalidMake-92] + _ = x[InvalidReal-93] + _ = x[InvalidAssert-94] + _ = x[ImpossibleAssert-95] + _ = x[InvalidConversion-96] + _ = x[InvalidUntypedConversion-97] + _ = x[BadOffsetofSyntax-98] + _ = x[InvalidOffsetof-99] + _ = x[UnusedExpr-100] + _ = x[UnusedVar-101] + _ = x[MissingReturn-102] + _ = x[WrongResultCount-103] + _ = x[OutOfScopeResult-104] + _ = x[InvalidCond-105] + _ = x[InvalidPostDecl-106] + _ = x[InvalidChanRange-107] + _ = x[InvalidIterVar-108] + _ = x[InvalidRangeExpr-109] + _ = x[MisplacedBreak-110] + _ = x[MisplacedContinue-111] + _ = x[MisplacedFallthrough-112] + _ = x[DuplicateCase-113] + _ = x[DuplicateDefault-114] + _ = x[BadTypeKeyword-115] + _ = x[InvalidTypeSwitch-116] + _ = x[InvalidExprSwitch-117] + _ = x[InvalidSelectCase-118] + _ = x[UndeclaredLabel-119] + _ = x[DuplicateLabel-120] + _ = x[MisplacedLabel-121] + _ = x[UnusedLabel-122] + _ = x[JumpOverDecl-123] + _ = x[JumpIntoBlock-124] + _ = x[InvalidMethodExpr-125] + _ = x[WrongArgCount-126] + _ = x[InvalidCall-127] + _ = x[UnusedResults-128] + _ = x[InvalidDefer-129] + _ = x[InvalidGo-130] + _ = x[BadDecl-131] + _ = x[RepeatedDecl-132] + _ = x[InvalidUnsafeAdd-133] + _ = x[InvalidUnsafeSlice-134] + _ = x[UnsupportedFeature-135] + _ = x[NotAGenericType-136] + _ = x[WrongTypeArgCount-137] + _ = x[CannotInferTypeArgs-138] + _ = x[InvalidTypeArg-139] + _ = x[InvalidInstanceCycle-140] + _ = x[InvalidUnion-141] + _ = x[MisplacedConstraintIface-142] + _ = x[InvalidMethodTypeParams-143] + _ = x[MisplacedTypeParam-144] +} + +const _ErrorCode_name = "TestBlankPkgNameMismatchedPkgNameInvalidPkgUseBadImportPathBrokenImportImportCRenamedUnusedImportInvalidInitCycleDuplicateDeclInvalidDeclCycleInvalidTypeCycleInvalidConstInitInvalidConstValInvalidConstTypeUntypedNilWrongAssignCountUnassignableOperandNoNewVarMultiValAssignOpInvalidIfaceAssignInvalidChanAssignIncompatibleAssignUnaddressableFieldAssignNotATypeInvalidArrayLenBlankIfaceMethodIncomparableMapKeyInvalidIfaceEmbedInvalidPtrEmbedBadRecvInvalidRecvDuplicateFieldAndMethodDuplicateMethodInvalidBlankInvalidIotaMissingInitBodyInvalidInitSigInvalidInitDeclInvalidMainDeclTooManyValuesNotAnExprTruncatedFloatNumericOverflowUndefinedOpMismatchedTypesDivByZeroNonNumericIncDecUnaddressableOperandInvalidIndirectionNonIndexableOperandInvalidIndexSwappedSliceIndicesNonSliceableOperandInvalidSliceExprInvalidShiftCountInvalidShiftOperandInvalidReceiveInvalidSendDuplicateLitKeyMissingLitKeyInvalidLitIndexOversizeArrayLitMixedStructLitInvalidStructLitMissingLitFieldDuplicateLitFieldUnexportedLitFieldInvalidLitFieldUntypedLitInvalidLitAmbiguousSelectorUndeclaredImportedNameUnexportedNameUndeclaredNameMissingFieldOrMethodBadDotDotDotSyntaxNonVariadicDotDotDotMisplacedDotDotDotInvalidDotDotDotOperandInvalidDotDotDotUncalledBuiltinInvalidAppendInvalidCapInvalidCloseInvalidCopyInvalidComplexInvalidDeleteInvalidImagInvalidLenSwappedMakeArgsInvalidMakeInvalidRealInvalidAssertImpossibleAssertInvalidConversionInvalidUntypedConversionBadOffsetofSyntaxInvalidOffsetofUnusedExprUnusedVarMissingReturnWrongResultCountOutOfScopeResultInvalidCondInvalidPostDeclInvalidChanRangeInvalidIterVarInvalidRangeExprMisplacedBreakMisplacedContinueMisplacedFallthroughDuplicateCaseDuplicateDefaultBadTypeKeywordInvalidTypeSwitchInvalidExprSwitchInvalidSelectCaseUndeclaredLabelDuplicateLabelMisplacedLabelUnusedLabelJumpOverDeclJumpIntoBlockInvalidMethodExprWrongArgCountInvalidCallUnusedResultsInvalidDeferInvalidGoBadDeclRepeatedDeclInvalidUnsafeAddInvalidUnsafeSliceUnsupportedFeatureNotAGenericTypeWrongTypeArgCountCannotInferTypeArgsInvalidTypeArgInvalidInstanceCycleInvalidUnionMisplacedConstraintIfaceInvalidMethodTypeParamsMisplacedTypeParam" + +var _ErrorCode_index = [...]uint16{0, 4, 16, 33, 46, 59, 71, 85, 97, 113, 126, 142, 158, 174, 189, 205, 215, 231, 250, 258, 274, 292, 309, 327, 351, 359, 374, 390, 408, 425, 440, 447, 458, 481, 496, 508, 519, 534, 548, 563, 578, 591, 600, 614, 629, 640, 655, 664, 680, 700, 718, 737, 749, 768, 787, 803, 820, 839, 853, 864, 879, 892, 907, 923, 937, 953, 968, 985, 1003, 1018, 1028, 1038, 1055, 1077, 1091, 1105, 1125, 1143, 1163, 1181, 1204, 1220, 1235, 1248, 1258, 1270, 1281, 1295, 1308, 1319, 1329, 1344, 1355, 1366, 1379, 1395, 1412, 1436, 1453, 1468, 1478, 1487, 1500, 1516, 1532, 1543, 1558, 1574, 1588, 1604, 1618, 1635, 1655, 1668, 1684, 1698, 1715, 1732, 1749, 1764, 1778, 1792, 1803, 1815, 1828, 1845, 1858, 1869, 1882, 1894, 1903, 1910, 1922, 1938, 1956, 1974, 1989, 2006, 2025, 2039, 2059, 2071, 2095, 2118, 2136} + +func (i ErrorCode) String() string { + i -= 1 + if i < 0 || i >= ErrorCode(len(_ErrorCode_index)-1) { + return "ErrorCode(" + strconv.FormatInt(int64(i+1), 10) + ")" + } + return _ErrorCode_name[_ErrorCode_index[i]:_ErrorCode_index[i+1]] +} diff --git a/vendor/golang.org/x/tools/internal/typesinternal/types.go b/vendor/golang.org/x/tools/internal/typesinternal/types.go new file mode 100644 index 0000000..ce7d435 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typesinternal/types.go @@ -0,0 +1,52 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package typesinternal provides access to internal go/types APIs that are not +// yet exported. +package typesinternal + +import ( + "go/token" + "go/types" + "reflect" + "unsafe" +) + +func SetUsesCgo(conf *types.Config) bool { + v := reflect.ValueOf(conf).Elem() + + f := v.FieldByName("go115UsesCgo") + if !f.IsValid() { + f = v.FieldByName("UsesCgo") + if !f.IsValid() { + return false + } + } + + addr := unsafe.Pointer(f.UnsafeAddr()) + *(*bool)(addr) = true + + return true +} + +// ReadGo116ErrorData extracts additional information from types.Error values +// generated by Go version 1.16 and later: the error code, start position, and +// end position. If all positions are valid, start <= err.Pos <= end. +// +// If the data could not be read, the final result parameter will be false. +func ReadGo116ErrorData(err types.Error) (code ErrorCode, start, end token.Pos, ok bool) { + var data [3]int + // By coincidence all of these fields are ints, which simplifies things. + v := reflect.ValueOf(err) + for i, name := range []string{"go116code", "go116start", "go116end"} { + f := v.FieldByName(name) + if !f.IsValid() { + return 0, 0, 0, false + } + data[i] = int(f.Int()) + } + return ErrorCode(data[0]), token.Pos(data[1]), token.Pos(data[2]), true +} + +var SetGoVersion = func(conf *types.Config, version string) bool { return false } diff --git a/vendor/golang.org/x/tools/internal/typesinternal/types_118.go b/vendor/golang.org/x/tools/internal/typesinternal/types_118.go new file mode 100644 index 0000000..a42b072 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/typesinternal/types_118.go @@ -0,0 +1,19 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build go1.18 +// +build go1.18 + +package typesinternal + +import ( + "go/types" +) + +func init() { + SetGoVersion = func(conf *types.Config, version string) bool { + conf.GoVersion = version + return true + } +} diff --git a/vendor/modules.txt b/vendor/modules.txt index b936580..9a6a9c7 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -13,12 +13,16 @@ go.uber.org/zap/internal/bufferpool go.uber.org/zap/internal/color go.uber.org/zap/internal/exit go.uber.org/zap/zapcore -# golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d +# golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 golang.org/x/crypto/md4 # golang.org/x/lint v0.0.0-20190930215403-16217165b5de golang.org/x/lint golang.org/x/lint/golint -# golang.org/x/text v0.3.2 +# golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 +golang.org/x/mod/semver +# golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f +golang.org/x/sys/execabs +# golang.org/x/text v0.3.8 golang.org/x/text/encoding golang.org/x/text/encoding/internal golang.org/x/text/encoding/internal/identifier @@ -26,7 +30,7 @@ golang.org/x/text/encoding/unicode golang.org/x/text/internal/utf8internal golang.org/x/text/runes golang.org/x/text/transform -# golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5 +# golang.org/x/tools v0.1.12 golang.org/x/tools/go/analysis golang.org/x/tools/go/analysis/passes/inspect golang.org/x/tools/go/ast/astutil @@ -35,13 +39,19 @@ golang.org/x/tools/go/buildutil golang.org/x/tools/go/gcexportdata golang.org/x/tools/go/internal/gcimporter golang.org/x/tools/go/internal/packagesdriver +golang.org/x/tools/go/internal/pkgbits golang.org/x/tools/go/packages golang.org/x/tools/go/types/objectpath golang.org/x/tools/go/types/typeutil -golang.org/x/tools/internal/fastwalk -golang.org/x/tools/internal/gopathwalk -golang.org/x/tools/internal/semver -golang.org/x/tools/internal/span +golang.org/x/tools/internal/analysisinternal +golang.org/x/tools/internal/event +golang.org/x/tools/internal/event/core +golang.org/x/tools/internal/event/keys +golang.org/x/tools/internal/event/label +golang.org/x/tools/internal/gocommand +golang.org/x/tools/internal/packagesinternal +golang.org/x/tools/internal/typeparams +golang.org/x/tools/internal/typesinternal # honnef.co/go/tools v0.0.1-2019.2.3 honnef.co/go/tools/arg honnef.co/go/tools/cmd/staticcheck