Addition of TranslationUnitDecl to the AST:

-Added TranslationUnitDecl class to serve as top declaration context
-ASTContext gets a TUDecl member and a getTranslationUnitDecl() function
-All ScopedDecls get the TUDecl as DeclContext when declared at global scope

llvm-svn: 49855

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index e4b48e21e44..7220ce4f9f0 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -1175,7 +1175,7 @@ int ASTContext::getIntegerTypeOrder(QualType LHS, QualType RHS) {
 QualType ASTContext::getCFConstantStringType() {
   if (!CFConstantStringTypeDecl) {
     CFConstantStringTypeDecl = 
-      RecordDecl::Create(*this, Decl::Struct, NULL, SourceLocation(), 
+      RecordDecl::Create(*this, Decl::Struct, TUDecl, SourceLocation(), 
                          &Idents.get("NSConstantString"), 0);
     QualType FieldTypes[4];
   
@@ -1727,6 +1727,8 @@ void ASTContext::Emit(llvm::Serializer& S) const {
                                           I!=E;++I)    
     (*I)->Emit(S);
 
+  S.EmitOwnedPtr(TUDecl);
+
   // FIXME: S.EmitOwnedPtr(CFConstantStringTypeDecl);
 }
 
@@ -1743,6 +1745,8 @@ ASTContext* ASTContext::Create(llvm::Deserializer& D) {
   for (unsigned i = 0; i < size_reserve; ++i)
     Type::Create(*A,i,D);
   
+  A->TUDecl = cast<TranslationUnitDecl>(D.ReadOwnedPtr<Decl>(*A));
+
   // FIXME: A->CFConstantStringTypeDecl = D.ReadOwnedPtr<RecordDecl>();
   
   return A;