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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@223860 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index 07b2a73ee858ca027b3ba541d7cad9095ac8e7bd..88e5a41e60bbdbe13071651453bcb0c65c4dac42 100644 (file)
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -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::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
   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) {