Remove NodeId from Block and Expr #58698

ljedrz · 2019-02-24T13:19:03Z

The next iteration of #57578. The relevant part is the last 2 commits (the others are dependencies).

Removes NodeId from

hir::Block
hir::Expr

Blocked by #58561, can be appended to it.

r? @Zoxc

ljedrz · 2019-02-24T13:26:54Z

Oof, I forgot about the Expr size assertion; I'll update shortly.

Zoxc · 2019-02-24T14:52:26Z

src/librustc_mir/transform/check_unsafety.rs

@@ -679,7 +678,7 @@ pub fn check_unsafety<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) {
    }

    let mut unsafe_blocks: Vec<_> = unsafe_blocks.into_iter().collect();
-    unsafe_blocks.sort();
+    unsafe_blocks.sort_by_cached_key(|(hir_id, _)| tcx.hir().hir_to_node_id(*hir_id));


I think it's find to just use sort here. Do you know which errors changed order with that?

Nope, plain sort breaks 2 issue test cases related to unused unsafe (unfortunately I forgot to register which ones).

Well we can land sort_by_cached_key here and you could open a new PR with an additional commit which changes it back to sort, so we can look at the failures.

Zoxc · 2019-02-24T15:13:13Z

src/librustc_driver/pretty.rs

@@ -425,8 +425,8 @@ impl<'hir> pprust_hir::PpAnn for IdentifiedAnnotation<'hir> {
            }
            pprust_hir::AnnNode::Expr(expr) => {
                s.s.space()?;
-                s.synth_comment(format!("node_id: {} hir local_id: {}",
-                                        expr.id, expr.hir_id.local_id.as_u32()))?;
+                s.synth_comment(format!("expr hir_id: {} hir local_id: {}",


You added expr here. Not sure if that's good or bad =P

Yes, so that it matches the other branches; I mean, it shouldn't break anything ^^.

Zoxc · 2019-02-24T15:40:59Z

src/librustc_privacy/lib.rs

@@ -271,7 +271,8 @@ fn def_id_visibility<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId)
                    return (ctor_vis, span, descr);
                }
                Node::Expr(expr) => {
-                    return (ty::Visibility::Restricted(tcx.hir().get_module_parent(expr.id)),
+                    return (ty::Visibility::Restricted(
+                        tcx.hir().get_module_parent_by_hir_id(expr.hir_id)),


This formatting doesn't quite make sense to me =P

I think I was just trying to squeeze it so that tidy doesn't complain; I can adjust it if need be :P.

Zoxc · 2019-02-24T16:01:40Z

I've looked over this and it looks good. You can append it to #58561

ljedrz · 2019-02-24T16:11:24Z

@Zoxc done; what about that static_assert on Expr, though? I forgot to alter it, but it doesn't seem to break anything.

ljedrz · 2019-02-24T16:11:49Z

Oh, and closing in favor of #58561.

Zoxc · 2019-02-24T16:24:21Z

@ljedrz That's probably due to padding.

ljedrz · 2019-02-24T16:59:00Z

@Zoxc I ran tests with that plain sort locally; the results are as follows:

failures:

---- [ui] ui\issues\issue-45107-unnecessary-unsafe-in-closure.rs stdout ----
diff of stderr:

1       error: unnecessary `unsafe` block
-         --> $DIR/issue-45107-unnecessary-unsafe-in-closure.rs:7:13
+         --> $DIR/issue-45107-unnecessary-unsafe-in-closure.rs:9:38
3          |
4       LL |     unsafe {
5          |     ------ because it's nested under this `unsafe` block

-       LL |         let f = |v: &mut Vec<_>| {
-       LL |             unsafe { //~ ERROR unnecessary `unsafe`
-          |             ^^^^^^ unnecessary `unsafe` block
+       ...
+       LL |                 |w: &mut Vec<u32>| { unsafe { //~ ERROR unnecessary `unsafe`
+          |                                      ^^^^^^ unnecessary `unsafe` block
9          |
10      note: lint level defined here
11        --> $DIR/issue-45107-unnecessary-unsafe-in-closure.rs:1:8

14         |        ^^^^^^^^^^^^^
15
16      error: unnecessary `unsafe` block
-         --> $DIR/issue-45107-unnecessary-unsafe-in-closure.rs:9:38
+         --> $DIR/issue-45107-unnecessary-unsafe-in-closure.rs:7:13
18         |
19      LL |     unsafe {
20         |     ------ because it's nested under this `unsafe` block

-       ...
-       LL |                 |w: &mut Vec<u32>| { unsafe { //~ ERROR unnecessary `unsafe`
-          |                                      ^^^^^^ unnecessary `unsafe` block
+       LL |         let f = |v: &mut Vec<_>| {
+       LL |             unsafe { //~ ERROR unnecessary `unsafe`
+          |             ^^^^^^ unnecessary `unsafe` block
24
25      error: unnecessary `unsafe` block
26        --> $DIR/issue-45107-unnecessary-unsafe-in-closure.rs:13:34

---- [ui] ui\span\lint-unused-unsafe.rs stdout ----
diff of stderr:

47         |         ^^^^^^ unnecessary `unsafe` block
48
49      error: unnecessary `unsafe` block
-         --> $DIR/lint-unused-unsafe.rs:29:5
+         --> $DIR/lint-unused-unsafe.rs:30:9
51         |
52      LL | unsafe fn bad7() {
53         | ---------------- because it's nested under this `unsafe` fn

54      LL |     unsafe {                             //~ ERROR: unnecessary `unsafe` block
-          |     ^^^^^^ unnecessary `unsafe` block
+       LL |         unsafe {                         //~ ERROR: unnecessary `unsafe` block
+          |         ^^^^^^ unnecessary `unsafe` block
56
57      error: unnecessary `unsafe` block
-         --> $DIR/lint-unused-unsafe.rs:30:9
+         --> $DIR/lint-unused-unsafe.rs:29:5
59         |
60      LL | unsafe fn bad7() {
61         | ---------------- because it's nested under this `unsafe` fn

62      LL |     unsafe {                             //~ ERROR: unnecessary `unsafe` block
-       LL |         unsafe {                         //~ ERROR: unnecessary `unsafe` block
-          |         ^^^^^^ unnecessary `unsafe` block
+          |     ^^^^^^ unnecessary `unsafe` block
65
66      error: aborting due to 8 previous errors
67

failures:
    [ui] ui\issues\issue-45107-unnecessary-unsafe-in-closure.rs
    [ui] ui\span\lint-unused-unsafe.rs

ljedrz added 12 commits February 24, 2019 07:50

hir: impl Display for HirId

904a91c

hir: remove NodeId from Lifetime and Ty

00b74e5

passes: HirIdify Id

58ed683

privacy: HirIdify ObsoleteVisiblePrivateTypesVisitor

1c18ac1

hir: remove NodeId from GenericParam

e4f8a6b

hir: remove NodeId from WhereClause

cd5b5e7

hir: remove NodeId from WhereEqPredicate

b6b2edb

middle: partially HirIdify stability

46e4f4a

doc: partially HirIdify visit_ast

c886d47

hir: remove NodeId from MacroDef

63b4dd9

hir: remove NodeId from Block

4910011

hir: remove NodeId from Expr

249e8a9

rust-highfive assigned Zoxc Feb 24, 2019

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Feb 24, 2019

ljedrz mentioned this pull request Feb 24, 2019

Remove NodeId from hir::Block #58651

Closed

ljedrz changed the title ~~HirIdify more nodes~~ Remove NodeId from Block and Expr Feb 24, 2019

Zoxc reviewed Feb 24, 2019

View reviewed changes

ljedrz closed this Feb 24, 2019

ljedrz deleted the HirIdify_more_nodes branch February 26, 2019 16:52

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Remove NodeId from Block and Expr #58698

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