Refactor out PrimitiveTypeTable

compiler/rustc_resolve/src/late.rs

@@ -20,7 +20,7 @@ use rustc_errors::DiagnosticId;
 use rustc_hir::def::Namespace::{self, *};
 use rustc_hir::def::{self, CtorKind, DefKind, PartialRes, PerNS};
 use rustc_hir::def_id::{DefId, CRATE_DEF_INDEX};
-use rustc_hir::TraitCandidate;
+use rustc_hir::{PrimTy, TraitCandidate};
 use rustc_middle::{bug, span_bug};
 use rustc_session::lint;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
@@ -1921,7 +1921,7 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
                     self.r.trait_map.insert(id, traits);
                 }
 
-                if self.r.primitive_type_table.primitive_types.contains_key(&path[0].ident.name) {
+                if PrimTy::from_name(path[0].ident.name).is_some() {
                     let mut std_path = Vec::with_capacity(1 + path.len());
 
                     std_path.push(Segment::from_ident(Ident::with_dummy_span(sym::std)));
@@ -2115,13 +2115,9 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
             // The same fallback is used when `a` resolves to nothing.
             PathResult::Module(ModuleOrUniformRoot::Module(_)) | PathResult::Failed { .. }
                 if (ns == TypeNS || path.len() > 1)
-                    && self
-                        .r
-                        .primitive_type_table
-                        .primitive_types
-                        .contains_key(&path[0].ident.name) =>
+                    && PrimTy::from_name(path[0].ident.name).is_some() =>
             {
-                let prim = self.r.primitive_type_table.primitive_types[&path[0].ident.name];
+                let prim = PrimTy::from_name(path[0].ident.name).unwrap();
                 PartialRes::with_unresolved_segments(Res::PrimTy(prim), path.len() - 1)
             }
             PathResult::Module(ModuleOrUniformRoot::Module(module)) => {