add IsLValueReferenceType & GetReferencedType (#596)

Author: Vipul-Cariappa

include/CppInterOp/CppInterOp.h

@@ -541,9 +541,15 @@ CPPINTEROP_API TCppType_t GetPointeeType(TCppType_t type);
 /// Checks if type is a reference
 CPPINTEROP_API bool IsReferenceType(TCppType_t type);
 
+/// Checks if type is a LValue reference
+CPPINTEROP_API bool IsLValueReferenceType(TCppType_t type);
+
 /// Get the type that the reference refers to
 CPPINTEROP_API TCppType_t GetNonReferenceType(TCppType_t type);
 
+/// Get lvalue referenced type
+CPPINTEROP_API TCppType_t GetReferencedType(TCppType_t type);
+
 /// Gets the pure, Underlying Type (as opposed to the Using Type).
 CPPINTEROP_API TCppType_t GetUnderlyingType(TCppType_t type);
 

lib/CppInterOp/CppInterOp.cpp

@@ -1561,6 +1561,16 @@ bool IsReferenceType(TCppType_t type) {
   return QT->isReferenceType();
 }
 
+bool IsLValueReferenceType(TCppType_t type) {
+  QualType QT = QualType::getFromOpaquePtr(type);
+  return QT->isLValueReferenceType();
+}
+
+TCppType_t GetReferencedType(TCppType_t type) {
+  QualType QT = QualType::getFromOpaquePtr(type);
+  return getASTContext().getLValueReferenceType(QT).getAsOpaquePtr();
+}
+
 TCppType_t GetNonReferenceType(TCppType_t type) {
   if (!IsReferenceType(type))
     return nullptr;

unittests/CppInterOp/VariableReflectionTest.cpp

@@ -677,4 +677,8 @@ TEST(VariableReflectionTest, Is_Get_Reference) {
             Cpp::GetVariableType(Decls[5]));
 
   EXPECT_FALSE(Cpp::GetNonReferenceType(Cpp::GetVariableType(Decls[5])));
+
+  EXPECT_TRUE(Cpp::IsLValueReferenceType(Cpp::GetVariableType(Decls[2])));
+  EXPECT_EQ(Cpp::GetReferencedType(Cpp::GetVariableType(Decls[1])),
+            Cpp::GetVariableType(Decls[2]));
 }