[clang] f6cdb2c - [clang][ASTImporter] Add import of DeducedTemplateSpecializationType.

[Balázs Kéri via cfe-commits]

Author: Balázs Kéri
Date: 2021-03-24T09:43:58+01:00
New Revision: f6cdb2c0a714f8921688de08858f34d8c776f0e6

URL: https://github.com/llvm/llvm-project/commit/f6cdb2c0a714f8921688de08858f34d8c776f0e6
DIFF: https://github.com/llvm/llvm-project/commit/f6cdb2c0a714f8921688de08858f34d8c776f0e6.diff

LOG: [clang][ASTImporter] Add import of DeducedTemplateSpecializationType.

Reviewed By: shafik

Differential Revision: https://reviews.llvm.org/D99188

Added: 
    

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

Removed: 
    


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diff  --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp
index c4f36b50db9d3..ef7a3ea8a66c2 100644
--- a/clang/lib/AST/ASTImporter.cpp
+++ b/clang/lib/AST/ASTImporter.cpp
@@ -358,6 +358,8 @@ namespace clang {
     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 @@ ExpectedType ASTNodeImporter::VisitAutoType(const AutoType *T) {
       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());

diff  --git a/clang/unittests/AST/ASTImporterTest.cpp b/clang/unittests/AST/ASTImporterTest.cpp
index 40383bcabc3f0..fdbf811c94dc1 100644
--- a/clang/unittests/AST/ASTImporterTest.cpp
+++ b/clang/unittests/AST/ASTImporterTest.cpp
@@ -631,6 +631,15 @@ TEST_P(ImportType, ImportDependentTemplateSpecialization) {
                  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;