[PATCH] D99188: [clang][ASTImporter] Add import of DeducedTemplateSpecializationType.

[Balázs Kéri via Phabricator via cfe-commits]

balazske created this revision.
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Herald added a reviewer: a.sidorin.
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balazske requested review of this revision.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99188

Files:
  clang/lib/AST/ASTImporter.cpp
  clang/unittests/AST/ASTImporterTest.cpp


Index: clang/unittests/AST/ASTImporterTest.cpp
===================================================================
--- clang/unittests/AST/ASTImporterTest.cpp
+++ clang/unittests/AST/ASTImporterTest.cpp
@@ -631,6 +631,15 @@
                  fieldDecl(hasType(dependentTemplateSpecializationType())))))));
 }
 
+TEST_P(ImportType, ImportDeducedTemplateSpecialization) {
+  MatchVerifier<Decl> Verifier;
+  testImport("template <typename T>"
+             "class C { public: C(T); };"
+             "C declToImport(123);",
+             Lang_CXX17, "", Lang_CXX17, Verifier,
+             varDecl(hasType(deducedTemplateSpecializationType())));
+}
+
 const internal::VariadicDynCastAllOfMatcher<Stmt, SizeOfPackExpr>
     sizeOfPackExpr;
 
Index: clang/lib/AST/ASTImporter.cpp
===================================================================
--- clang/lib/AST/ASTImporter.cpp
+++ clang/lib/AST/ASTImporter.cpp
@@ -358,6 +358,8 @@
     ExpectedType VisitDecltypeType(const DecltypeType *T);
     ExpectedType VisitUnaryTransformType(const UnaryTransformType *T);
     ExpectedType VisitAutoType(const AutoType *T);
+    ExpectedType VisitDeducedTemplateSpecializationType(
+        const DeducedTemplateSpecializationType *T);
     ExpectedType VisitInjectedClassNameType(const InjectedClassNameType *T);
     // FIXME: DependentDecltypeType
     ExpectedType VisitRecordType(const RecordType *T);
@@ -1376,6 +1378,20 @@
       ToTemplateArgs);
 }
 
+ExpectedType ASTNodeImporter::VisitDeducedTemplateSpecializationType(
+    const DeducedTemplateSpecializationType *T) {
+  // FIXME: Make sure that the "to" context supports C++17!
+  Expected<TemplateName> ToTemplateNameOrErr = import(T->getTemplateName());
+  if (!ToTemplateNameOrErr)
+    return ToTemplateNameOrErr.takeError();
+  ExpectedType ToDeducedTypeOrErr = import(T->getDeducedType());
+  if (!ToDeducedTypeOrErr)
+    return ToDeducedTypeOrErr.takeError();
+
+  return Importer.getToContext().getDeducedTemplateSpecializationType(
+      *ToTemplateNameOrErr, *ToDeducedTypeOrErr, T->isDependentType());
+}
+
 ExpectedType ASTNodeImporter::VisitInjectedClassNameType(
     const InjectedClassNameType *T) {
   Expected<CXXRecordDecl *> ToDeclOrErr = import(T->getDecl());


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