Support typedefs in GetScopeFromType

Author: sudo-panda

lib/Interpreter/CppInterOp.cpp

@@ -468,7 +468,7 @@ namespace Cpp {
   }
 
   static Decl *GetScopeFromType(QualType QT) {
-    if (auto *Type = QT.getTypePtrOrNull()) {
+    if (auto* Type = QT.getCanonicalType().getTypePtrOrNull()) {
       Type = Type->getPointeeOrArrayElementType();
       Type = Type->getUnqualifiedDesugaredType();
       if (auto *ET = llvm::dyn_cast<EnumType>(Type))

unittests/CppInterOp/ScopeReflectionTest.cpp

@@ -477,25 +477,31 @@ TEST(ScopeReflectionTest, GetScopeFromType) {
     namespace N {
     class C {};
     struct S {};
+    typedef C T;
     }
 
     N::C c;
 
     N::S s;
 
     int i;
+    
+    N::T t;
   )";
 
   GetAllTopLevelDecls(code, Decls);
   QualType QT1 = llvm::dyn_cast<VarDecl>(Decls[1])->getType();
   QualType QT2 = llvm::dyn_cast<VarDecl>(Decls[2])->getType();
   QualType QT3 = llvm::dyn_cast<VarDecl>(Decls[3])->getType();
+  QualType QT4 = llvm::dyn_cast<VarDecl>(Decls[4])->getType();
   EXPECT_EQ(Cpp::GetQualifiedName(Cpp::GetScopeFromType(QT1.getAsOpaquePtr())),
           "N::C");
   EXPECT_EQ(Cpp::GetQualifiedName(Cpp::GetScopeFromType(QT2.getAsOpaquePtr())),
           "N::S");
   EXPECT_EQ(Cpp::GetScopeFromType(QT3.getAsOpaquePtr()),
           (Cpp::TCppScope_t) 0);
+  EXPECT_EQ(Cpp::GetQualifiedName(Cpp::GetScopeFromType(QT4.getAsOpaquePtr())),
+          "N::C");
 }
 
 TEST(ScopeReflectionTest, GetNumBases) {