[clang][ASTImporter] Add import of 'MacroQualifiedType'

Add import of 'MacroQualifiedType'.

Reviewed By: balazske

Differential Revision: https://reviews.llvm.org/D157780

Author: danix800

clang/lib/AST/ASTImporter.cpp

@@ -419,6 +419,7 @@ namespace clang {
     ExpectedType VisitObjCInterfaceType(const ObjCInterfaceType *T);
     ExpectedType VisitObjCObjectType(const ObjCObjectType *T);
     ExpectedType VisitObjCObjectPointerType(const ObjCObjectPointerType *T);
+    ExpectedType VisitMacroQualifiedType(const MacroQualifiedType *T);
 
     // Importing declarations
     Error ImportDeclParts(NamedDecl *D, DeclarationName &Name, NamedDecl *&ToD,
@@ -1701,6 +1702,17 @@ ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
   return Importer.getToContext().getObjCObjectPointerType(*ToPointeeTypeOrErr);
 }
 
+ExpectedType
+ASTNodeImporter::VisitMacroQualifiedType(const MacroQualifiedType *T) {
+  ExpectedType ToUnderlyingTypeOrErr = import(T->getUnderlyingType());
+  if (!ToUnderlyingTypeOrErr)
+    return ToUnderlyingTypeOrErr.takeError();
+
+  IdentifierInfo *ToIdentifier = Importer.Import(T->getMacroIdentifier());
+  return Importer.getToContext().getMacroQualifiedType(*ToUnderlyingTypeOrErr,
+                                                       ToIdentifier);
+}
+
 //----------------------------------------------------------------------------
 // Import Declarations
 //----------------------------------------------------------------------------

clang/unittests/AST/ASTImporterTest.cpp

@@ -8638,6 +8638,24 @@ TEST_P(ImportInjectedClassNameType, ImportTypedefType) {
   EXPECT_TRUE(ToCtx.hasSameType(ToInjTypedef, ToInjParmVar));
 }
 
+TEST_P(ASTImporterOptionSpecificTestBase, ImportMacroQualifiedType) {
+  Decl *From, *To;
+  std::tie(From, To) = getImportedDecl(
+      R"(
+        #define CDECL __attribute__((cdecl))
+        typedef void (CDECL *X)();
+      )",
+      Lang_CXX03, "", Lang_CXX03, "X");
+
+  auto *FromTy =
+      FirstDeclMatcher<MacroQualifiedType>().match(From, macroQualifiedType());
+  auto *ToTy =
+      FirstDeclMatcher<MacroQualifiedType>().match(To, macroQualifiedType());
+
+  EXPECT_TRUE(isa<AttributedType>(FromTy->getUnderlyingType()));
+  EXPECT_TRUE(isa<AttributedType>(ToTy->getUnderlyingType()));
+}
+
 TEST_P(ASTImporterOptionSpecificTestBase, ImportCorrectTemplateName) {
   constexpr auto TestCode = R"(
       template <class T>