r223860 - Updated the AST importer to support importing

[Sean Callanan]

Author: spyffe
Date: Tue Dec  9 18:00:37 2014
New Revision: 223860

URL: http://llvm.org/viewvc/llvm-project?rev=223860&view=rev
Log:
Updated the AST importer to support importing
LinkageSpecDecls.  This is relevant when LLDB
wants to import Decls from non-C++ modules,
since many declarations are in extern "C"
blocks.

Modified:
    cfe/trunk/lib/AST/ASTImporter.cpp

Modified: cfe/trunk/lib/AST/ASTImporter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ASTImporter.cpp?rev=223860&r1=223859&r2=223860&view=diff
==============================================================================
--- cfe/trunk/lib/AST/ASTImporter.cpp (original)
+++ cfe/trunk/lib/AST/ASTImporter.cpp Tue Dec  9 18:00:37 2014
@@ -151,6 +151,7 @@ namespace clang {
     Decl *VisitObjCMethodDecl(ObjCMethodDecl *D);
     Decl *VisitObjCCategoryDecl(ObjCCategoryDecl *D);
     Decl *VisitObjCProtocolDecl(ObjCProtocolDecl *D);
+    Decl *VisitLinkageSpecDecl(LinkageSpecDecl *D);
     Decl *VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
     Decl *VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
     Decl *VisitObjCImplementationDecl(ObjCImplementationDecl *D);
@@ -3470,6 +3471,35 @@ Decl *ASTNodeImporter::VisitObjCProtocol
   return ToProto;
 }
 
+Decl *ASTNodeImporter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
+  DeclContext *DC = Importer.ImportContext(D->getDeclContext());
+  DeclContext *LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
+
+  SourceLocation ExternLoc = Importer.Import(D->getExternLoc());
+  SourceLocation LangLoc = Importer.Import(D->getLocation());
+
+  bool HasBraces = D->hasBraces();
+ 
+  LinkageSpecDecl *ToLinkageSpec = LinkageSpecDecl::Create(Importer.getToContext(),
+                                                           DC,
+                                                           ExternLoc,
+                                                           LangLoc,
+                                                           D->getLanguage(),
+                                                           HasBraces);
+
+  if (HasBraces) {
+    SourceLocation RBraceLoc = Importer.Import(D->getRBraceLoc());
+    ToLinkageSpec->setRBraceLoc(RBraceLoc);
+  }
+
+  ToLinkageSpec->setLexicalDeclContext(LexicalDC);
+  LexicalDC->addDeclInternal(ToLinkageSpec);
+
+  Importer.Imported(D, ToLinkageSpec);
+
+  return ToLinkageSpec;
+}
+
 bool ASTNodeImporter::ImportDefinition(ObjCInterfaceDecl *From, 
                                        ObjCInterfaceDecl *To,
                                        ImportDefinitionKind Kind) {