move export_map into the tcx

Author: nikomatsakis

src/librustc/middle/cstore.rs

@@ -255,8 +255,8 @@ pub trait CrateStore {
     fn used_crates(&self, prefer: LinkagePreference) -> Vec<(CrateNum, LibSource)>;
     fn used_crate_source(&self, cnum: CrateNum) -> CrateSource;
     fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum>;
-    fn encode_metadata<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                                 reexports: &def::ExportMap,
+    fn encode_metadata<'a, 'tcx>(&self,
+                                 tcx: TyCtxt<'a, 'tcx, 'tcx>,
                                  link_meta: &LinkMeta,
                                  reachable: &NodeSet) -> Vec<u8>;
     fn metadata_encoding_version(&self) -> &[u8];
@@ -412,10 +412,10 @@ impl CrateStore for DummyCrateStore {
         { vec![] }
     fn used_crate_source(&self, cnum: CrateNum) -> CrateSource { bug!("used_crate_source") }
     fn extern_mod_stmt_cnum(&self, emod_id: ast::NodeId) -> Option<CrateNum> { None }
-    fn encode_metadata<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                           reexports: &def::ExportMap,
-                           link_meta: &LinkMeta,
-                           reachable: &NodeSet) -> Vec<u8> { vec![] }
+    fn encode_metadata<'a, 'tcx>(&self,
+                                 tcx: TyCtxt<'a, 'tcx, 'tcx>,
+                                 link_meta: &LinkMeta,
+                                 reachable: &NodeSet) -> Vec<u8> { vec![] }
     fn metadata_encoding_version(&self) -> &[u8] { bug!("metadata_encoding_version") }
 }
 

src/librustc/ty/context.rs

@@ -15,7 +15,7 @@ use session::Session;
 use lint;
 use middle;
 use hir::TraitMap;
-use hir::def::Def;
+use hir::def::{Def, ExportMap};
 use hir::def_id::{CrateNum, DefId, LOCAL_CRATE};
 use hir::map as hir_map;
 use hir::map::DisambiguatedDefPathData;
@@ -416,6 +416,9 @@ pub struct GlobalCtxt<'tcx> {
     /// is relevant; generated by resolve.
     pub trait_map: TraitMap,
 
+    /// Export map produced by name resolution.
+    pub export_map: ExportMap,
+
     pub named_region_map: resolve_lifetime::NamedRegionMap,
 
     pub region_maps: RegionMaps,
@@ -698,6 +701,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
             region_maps: region_maps,
             variance_computed: Cell::new(false),
             trait_map: resolutions.trait_map,
+            export_map: resolutions.export_map,
             fulfilled_predicates: RefCell::new(fulfilled_predicates),
             hir: hir,
             maps: maps::Maps::new(dep_graph, providers),

src/librustc/ty/mod.rs

@@ -110,7 +110,6 @@ mod sty;
 /// produced by the driver and fed to trans and later passes.
 #[derive(Clone)]
 pub struct CrateAnalysis {
-    pub export_map: ExportMap,
     pub access_levels: middle::privacy::AccessLevels,
     pub reachable: NodeSet,
     pub name: String,
@@ -122,6 +121,7 @@ pub struct Resolutions {
     pub freevars: FreevarMap,
     pub trait_map: TraitMap,
     pub maybe_unused_trait_imports: NodeSet,
+    pub export_map: ExportMap,
 }
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug)]

src/librustc_driver/driver.rs

@@ -807,18 +807,18 @@ pub fn phase_2_configure_and_expand<F>(sess: &Session,
         expanded_crate: krate,
         defs: resolver.definitions,
         analysis: ty::CrateAnalysis {
-            export_map: resolver.export_map,
             access_levels: AccessLevels::default(),
             reachable: NodeSet(),
             name: crate_name.to_string(),
             glob_map: if resolver.make_glob_map { Some(resolver.glob_map) } else { None },
         },
         resolutions: Resolutions {
             freevars: resolver.freevars,
+            export_map: resolver.export_map,
             trait_map: resolver.trait_map,
             maybe_unused_trait_imports: resolver.maybe_unused_trait_imports,
         },
-        hir_forest: hir_forest
+        hir_forest: hir_forest,
     })
 }
 
@@ -932,7 +932,7 @@ pub fn phase_3_run_analysis_passes<'tcx, F, R>(sess: &'tcx Session,
 
         analysis.access_levels =
             time(time_passes, "privacy checking", || {
-                rustc_privacy::check_crate(tcx, &analysis.export_map)
+                rustc_privacy::check_crate(tcx)
             });
 
         time(time_passes,

src/librustc_metadata/cstore_impl.rs

@@ -496,12 +496,12 @@ impl CrateStore for cstore::CStore {
         self.do_extern_mod_stmt_cnum(emod_id)
     }
 
-    fn encode_metadata<'a, 'tcx>(&self, tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                                 reexports: &def::ExportMap,
+    fn encode_metadata<'a, 'tcx>(&self,
+                                 tcx: TyCtxt<'a, 'tcx, 'tcx>,
                                  link_meta: &LinkMeta,
                                  reachable: &NodeSet) -> Vec<u8>
     {
-        encoder::encode_metadata(tcx, self, reexports, link_meta, reachable)
+        encoder::encode_metadata(tcx, self, link_meta, reachable)
     }
 
     fn metadata_encoding_version(&self) -> &[u8]

src/librustc_metadata/encoder.rs

@@ -13,7 +13,6 @@ use index::Index;
 use schema::*;
 
 use rustc::middle::cstore::{LinkMeta, LinkagePreference, NativeLibrary};
-use rustc::hir::def;
 use rustc::hir::def_id::{CrateNum, CRATE_DEF_INDEX, DefIndex, DefId};
 use rustc::hir::map::definitions::DefPathTable;
 use rustc::middle::dependency_format::Linkage;
@@ -48,7 +47,6 @@ use super::index_builder::{FromId, IndexBuilder, Untracked};
 pub struct EncodeContext<'a, 'tcx: 'a> {
     opaque: opaque::Encoder<'a>,
     pub tcx: TyCtxt<'a, 'tcx, 'tcx>,
-    reexports: &'a def::ExportMap,
     link_meta: &'a LinkMeta,
     cstore: &'a cstore::CStore,
     exported_symbols: &'a NodeSet,
@@ -306,7 +304,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
         let def_id = tcx.hir.local_def_id(id);
 
         let data = ModData {
-            reexports: match self.reexports.get(&id) {
+            reexports: match tcx.export_map.get(&id) {
                 Some(exports) if *vis == hir::Public => self.lazy_seq_ref(exports),
                 _ => LazySeq::empty(),
             },
@@ -1423,7 +1421,6 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
 
 pub fn encode_metadata<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
                                  cstore: &cstore::CStore,
-                                 reexports: &def::ExportMap,
                                  link_meta: &LinkMeta,
                                  exported_symbols: &NodeSet)
                                  -> Vec<u8> {
@@ -1437,7 +1434,6 @@ pub fn encode_metadata<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
         let mut ecx = EncodeContext {
             opaque: opaque::Encoder::new(&mut cursor),
             tcx: tcx,
-            reexports: reexports,
             link_meta: link_meta,
             cstore: cstore,
             exported_symbols: exported_symbols,

src/librustc_privacy/lib.rs

@@ -27,7 +27,7 @@ extern crate syntax_pos;
 
 use rustc::dep_graph::DepNode;
 use rustc::hir::{self, PatKind};
-use rustc::hir::def::{self, Def};
+use rustc::hir::def::Def;
 use rustc::hir::def_id::{CRATE_DEF_INDEX, DefId};
 use rustc::hir::intravisit::{self, Visitor, NestedVisitorMap};
 use rustc::hir::itemlikevisit::DeepVisitor;
@@ -71,7 +71,6 @@ impl<'a, 'tcx> Visitor<'tcx> for PubRestrictedVisitor<'a, 'tcx> {
 
 struct EmbargoVisitor<'a, 'tcx: 'a> {
     tcx: TyCtxt<'a, 'tcx, 'tcx>,
-    export_map: &'a def::ExportMap,
 
     // Accessibility levels for reachable nodes
     access_levels: AccessLevels,
@@ -324,7 +323,7 @@ impl<'a, 'tcx> Visitor<'tcx> for EmbargoVisitor<'a, 'tcx> {
         // This code is here instead of in visit_item so that the
         // crate module gets processed as well.
         if self.prev_level.is_some() {
-            if let Some(exports) = self.export_map.get(&id) {
+            if let Some(exports) = self.tcx.export_map.get(&id) {
                 for export in exports {
                     if let Some(node_id) = self.tcx.hir.as_local_node_id(export.def.def_id()) {
                         self.update(node_id, Some(AccessLevel::Exported));
@@ -1204,9 +1203,7 @@ impl<'a, 'tcx> Visitor<'tcx> for PrivateItemsInPublicInterfacesVisitor<'a, 'tcx>
     fn visit_pat(&mut self, _: &'tcx hir::Pat) {}
 }
 
-pub fn check_crate<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
-                             export_map: &def::ExportMap)
-                             -> AccessLevels {
+pub fn check_crate<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>) -> AccessLevels {
     let _task = tcx.dep_graph.in_task(DepNode::Privacy);
 
     let krate = tcx.hir.krate();
@@ -1226,7 +1223,6 @@ pub fn check_crate<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
     // items which are reachable from external crates based on visibility.
     let mut visitor = EmbargoVisitor {
         tcx: tcx,
-        export_map: export_map,
         access_levels: Default::default(),
         prev_level: Some(AccessLevel::Public),
         changed: false,

src/librustc_trans/base.rs

@@ -755,7 +755,6 @@ fn write_metadata(cx: &SharedCrateContext,
 
     let cstore = &cx.tcx().sess.cstore;
     let metadata = cstore.encode_metadata(cx.tcx(),
-                                          cx.export_map(),
                                           cx.link_meta(),
                                           exported_symbols);
     if kind == MetadataKind::Uncompressed {
@@ -1056,15 +1055,14 @@ pub fn trans_crate<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
     // particular items that will be processed.
     let krate = tcx.hir.krate();
 
-    let ty::CrateAnalysis { export_map, reachable, name, .. } = analysis;
+    let ty::CrateAnalysis { reachable, name, .. } = analysis;
     let exported_symbols = find_exported_symbols(tcx, reachable);
 
     let check_overflow = tcx.sess.overflow_checks();
 
     let link_meta = link::build_link_meta(incremental_hashes_map, &name);
 
     let shared_ccx = SharedCrateContext::new(tcx,
-                                             export_map,
                                              link_meta.clone(),
                                              exported_symbols,
                                              check_overflow);

src/librustc_trans/context.rs

@@ -14,7 +14,6 @@ use rustc::dep_graph::{DepGraph, DepGraphSafe, DepNode, DepTrackingMap,
                        DepTrackingMapConfig, WorkProduct};
 use middle::cstore::LinkMeta;
 use rustc::hir;
-use rustc::hir::def::ExportMap;
 use rustc::hir::def_id::DefId;
 use rustc::traits;
 use debuginfo;
@@ -68,7 +67,6 @@ pub struct SharedCrateContext<'a, 'tcx: 'a> {
     metadata_llmod: ModuleRef,
     metadata_llcx: ContextRef,
 
-    export_map: ExportMap,
     exported_symbols: NodeSet,
     link_meta: LinkMeta,
     tcx: TyCtxt<'a, 'tcx, 'tcx>,
@@ -402,7 +400,6 @@ unsafe fn create_context_and_module(sess: &Session, mod_name: &str) -> (ContextR
 
 impl<'b, 'tcx> SharedCrateContext<'b, 'tcx> {
     pub fn new(tcx: TyCtxt<'b, 'tcx, 'tcx>,
-               export_map: ExportMap,
                link_meta: LinkMeta,
                exported_symbols: NodeSet,
                check_overflow: bool)
@@ -459,7 +456,6 @@ impl<'b, 'tcx> SharedCrateContext<'b, 'tcx> {
         SharedCrateContext {
             metadata_llmod: metadata_llmod,
             metadata_llcx: metadata_llcx,
-            export_map: export_map,
             exported_symbols: exported_symbols,
             link_meta: link_meta,
             empty_param_env: tcx.empty_parameter_environment(),
@@ -499,10 +495,6 @@ impl<'b, 'tcx> SharedCrateContext<'b, 'tcx> {
         self.metadata_llcx
     }
 
-    pub fn export_map<'a>(&'a self) -> &'a ExportMap {
-        &self.export_map
-    }
-
     pub fn exported_symbols<'a>(&'a self) -> &'a NodeSet {
         &self.exported_symbols
     }
@@ -702,10 +694,6 @@ impl<'b, 'tcx> CrateContext<'b, 'tcx> {
         unsafe { llvm::LLVMRustGetModuleDataLayout(self.llmod()) }
     }
 
-    pub fn export_map<'a>(&'a self) -> &'a ExportMap {
-        &self.shared.export_map
-    }
-
     pub fn exported_symbols<'a>(&'a self) -> &'a NodeSet {
         &self.shared.exported_symbols
     }

src/librustdoc/core.rs

@@ -13,7 +13,7 @@ use rustc_driver::{driver, target_features, abort_on_err};
 use rustc::dep_graph::DepGraph;
 use rustc::session::{self, config};
 use rustc::hir::def_id::DefId;
-use rustc::hir::def::{Def, ExportMap};
+use rustc::hir::def::Def;
 use rustc::middle::privacy::AccessLevels;
 use rustc::ty::{self, TyCtxt, GlobalArenas};
 use rustc::hir::map as hir_map;
@@ -64,7 +64,6 @@ pub struct DocContext<'a, 'tcx: 'a> {
     pub ty_substs: RefCell<FxHashMap<Def, clean::Type>>,
     /// Table node id of lifetime parameter definition -> substituted lifetime
     pub lt_substs: RefCell<FxHashMap<ast::NodeId, clean::Lifetime>>,
-    pub export_map: ExportMap,
 }
 
 impl<'a, 'tcx> DocContext<'a, 'tcx> {
@@ -180,7 +179,7 @@ pub fn run_core(search_paths: SearchPaths,
             sess.fatal("Compilation failed, aborting rustdoc");
         }
 
-        let ty::CrateAnalysis { access_levels, export_map, .. } = analysis;
+        let ty::CrateAnalysis { access_levels, .. } = analysis;
 
         // Convert from a NodeId set to a DefId set since we don't always have easy access
         // to the map from defid -> nodeid
@@ -198,7 +197,6 @@ pub fn run_core(search_paths: SearchPaths,
             renderinfo: Default::default(),
             ty_substs: Default::default(),
             lt_substs: Default::default(),
-            export_map: export_map,
         };
         debug!("crate: {:?}", tcx.hir.krate());
 

src/librustdoc/visit_ast.rs

@@ -198,7 +198,7 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
             self.visit_item(item, None, &mut om);
         }
         self.inside_public_path = orig_inside_public_path;
-        if let Some(exports) = self.cx.export_map.get(&id) {
+        if let Some(exports) = self.cx.tcx.export_map.get(&id) {
             for export in exports {
                 if let Def::Macro(def_id, ..) = export.def {
                     if def_id.krate == LOCAL_CRATE {