Retain complete source-location information for C++
nested-name-specifiers throughout the parser, and provide a new class
(NestedNameSpecifierLoc) that contains a nested-name-specifier along
with its type-source information.
Right now, this information is completely useless, because we don't
actually store the source-location information anywhere in the
AST. Call this Step 1/N.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126391 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaCXXScopeSpec.cpp b/lib/Sema/SemaCXXScopeSpec.cpp
index 9daec58..7ad4b45 100644
--- a/lib/Sema/SemaCXXScopeSpec.cpp
+++ b/lib/Sema/SemaCXXScopeSpec.cpp
@@ -658,6 +658,41 @@
return false;
}
+namespace {
+ /// \brief A structure that stores a nested-name-specifier annotation,
+ /// including both the nested-name-specifier
+ struct NestedNameSpecifierAnnotation {
+ NestedNameSpecifier *NNS;
+ };
+}
+
+void *Sema::SaveNestedNameSpecifierAnnotation(CXXScopeSpec &SS) {
+ if (SS.isEmpty() || SS.isInvalid())
+ return 0;
+
+ void *Mem = Context.Allocate((sizeof(NestedNameSpecifierAnnotation) +
+ SS.location_size()),
+ llvm::alignOf<NestedNameSpecifierAnnotation>());
+ NestedNameSpecifierAnnotation *Annotation
+ = new (Mem) NestedNameSpecifierAnnotation;
+ Annotation->NNS = SS.getScopeRep();
+ memcpy(Annotation + 1, SS.location_data(), SS.location_size());
+ return Annotation;
+}
+
+void Sema::RestoreNestedNameSpecifierAnnotation(void *AnnotationPtr,
+ SourceRange AnnotationRange,
+ CXXScopeSpec &SS) {
+ if (!AnnotationPtr) {
+ SS.SetInvalid(AnnotationRange);
+ return;
+ }
+
+ NestedNameSpecifierAnnotation *Annotation
+ = static_cast<NestedNameSpecifierAnnotation *>(AnnotationPtr);
+ SS.Adopt(NestedNameSpecifierLoc(Annotation->NNS, Annotation + 1));
+}
+
bool Sema::ShouldEnterDeclaratorScope(Scope *S, const CXXScopeSpec &SS) {
assert(SS.isSet() && "Parser passed invalid CXXScopeSpec.");