Implement C++ 'typeid' parsing and sema.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59042 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 879a79b..b595ad7 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -193,7 +193,8 @@
/// LookupDecl - Look up the inner-most declaration in the specified
/// namespace.
Decl *Sema::LookupDecl(const IdentifierInfo *II, unsigned NSI, Scope *S,
- DeclContext *LookupCtx, bool enableLazyBuiltinCreation) {
+ const DeclContext *LookupCtx,
+ bool enableLazyBuiltinCreation) {
if (II == 0) return 0;
unsigned NS = NSI;
if (getLangOptions().CPlusPlus && (NS & Decl::IDNS_Ordinary))
@@ -278,6 +279,18 @@
return New;
}
+/// GetStdNamespace - This method gets the C++ "std" namespace. This is where
+/// everything from the standard library is defined.
+NamespaceDecl *Sema::GetStdNamespace() {
+ if (!StdNamespace) {
+ DeclContext *Global = Context.getTranslationUnitDecl();
+ Decl *Std = LookupDecl(Ident_StdNs, Decl::IDNS_Tag | Decl::IDNS_Ordinary,
+ 0, Global, /*enableLazyBuiltinCreation=*/false);
+ StdNamespace = dyn_cast_or_null<NamespaceDecl>(Std);
+ }
+ return StdNamespace;
+}
+
/// MergeTypeDefDecl - We just parsed a typedef 'New' which has the same name
/// and scope as a previous declaration 'Old'. Figure out how to resolve this
/// situation, merging decls or emitting diagnostics as appropriate.