Teach CXXScopeSpec to handle the extension of a nested-name-specifier

with another component in the nested-name-specifiers, updating its
representation (a NestedNameSpecifier) and source-location information
(currently a SourceRange) simultaneously. This is groundwork for
adding source-location information to nested-name-specifiers.

llvm-svn: 126346

1 files changed, 37 insertions, 0 deletions

diff --git a/clang/lib/Sema/DeclSpec.cpp b/clang/lib/Sema/DeclSpec.cpp
index bc289ec42c9..39984974bfd 100644
--- a/clang/lib/Sema/DeclSpec.cpp
+++ b/clang/lib/Sema/DeclSpec.cpp
@@ -14,6 +14,8 @@
 #include "clang/Parse/ParseDiagnostic.h" // FIXME: remove this back-dependency!
 #include "clang/Sema/DeclSpec.h"
 #include "clang/Sema/ParsedTemplate.h"
+#include "clang/AST/NestedNameSpecifier.h"
+#include "clang/AST/TypeLoc.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Basic/LangOptions.h"
 #include "llvm/ADT/STLExtras.h"
@@ -44,6 +46,41 @@ void UnqualifiedId::setConstructorTemplateId(TemplateIdAnnotation *TemplateId) {
   EndLocation = TemplateId->RAngleLoc;
 }
 
+void CXXScopeSpec::Extend(ASTContext &Context, SourceLocation TemplateKWLoc, 
+                          TypeLoc TL, SourceLocation ColonColonLoc) {
+  ScopeRep = NestedNameSpecifier::Create(Context, ScopeRep, 
+                                         TemplateKWLoc.isValid(), 
+                                         TL.getTypePtr());
+  if (Range.getBegin().isInvalid())
+    Range.setBegin(TL.getBeginLoc());
+  Range.setEnd(ColonColonLoc);
+}
+
+void CXXScopeSpec::Extend(ASTContext &Context, IdentifierInfo *Identifier,
+                          SourceLocation IdentifierLoc, 
+                          SourceLocation ColonColonLoc) {
+  ScopeRep = NestedNameSpecifier::Create(Context, ScopeRep, Identifier);
+  if (Range.getBegin().isInvalid())
+    Range.setBegin(IdentifierLoc);
+  Range.setEnd(ColonColonLoc);
+}
+
+void CXXScopeSpec::Extend(ASTContext &Context, NamespaceDecl *Namespace,
+                          SourceLocation NamespaceLoc, 
+                          SourceLocation ColonColonLoc) {
+  ScopeRep = NestedNameSpecifier::Create(Context, ScopeRep, Namespace);
+  if (Range.getBegin().isInvalid())
+    Range.setBegin(NamespaceLoc);
+  Range.setEnd(ColonColonLoc);
+}
+
+void CXXScopeSpec::MakeGlobal(ASTContext &Context, 
+                              SourceLocation ColonColonLoc) {
+  assert(!ScopeRep && "Already have a nested-name-specifier!?");
+  ScopeRep = NestedNameSpecifier::GlobalSpecifier(Context);
+  Range = SourceRange(ColonColonLoc);
+}
+
 /// DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function.
 /// "TheDeclarator" is the declarator that this will be added to.
 DeclaratorChunk DeclaratorChunk::getFunction(const ParsedAttributes &attrs,