Add IsLambdaClass (#691)

Author: Vipul-Cariappa

include/CppInterOp/CppInterOp.h

@@ -573,6 +573,9 @@ void GetEnumConstantDatamembers(TCppScope_t scope,
 CPPINTEROP_API TCppScope_t LookupDatamember(const std::string& name,
                                             TCppScope_t parent);
 
+/// Check if the given type is a lamda class
+CPPINTEROP_API bool IsLambdaClass(TCppType_t type);
+
 /// Gets the type of the variable that is passed as a parameter.
 CPPINTEROP_API TCppType_t GetVariableType(TCppScope_t var);
 

lib/CppInterOp/CppInterOp.cpp

@@ -1406,6 +1406,14 @@ TCppScope_t LookupDatamember(const std::string& name, TCppScope_t parent) {
   return 0;
 }
 
+bool IsLambdaClass(TCppType_t type) {
+  QualType QT = QualType::getFromOpaquePtr(type);
+  if (auto* CXXRD = QT->getAsCXXRecordDecl()) {
+    return CXXRD->isLambda();
+  }
+  return false;
+}
+
 TCppType_t GetVariableType(TCppScope_t var) {
   auto* D = static_cast<Decl*>(var);
 

unittests/CppInterOp/VariableReflectionTest.cpp

@@ -234,6 +234,7 @@ TEST(VariableReflectionTest, GetVariableType) {
     E<int> e;
     E<int> *f;
     int g[4];
+    auto fn = []() { return 1; };
     )";
 
   GetAllTopLevelDecls(code, Decls);
@@ -245,6 +246,9 @@ TEST(VariableReflectionTest, GetVariableType) {
   EXPECT_EQ(Cpp::GetTypeAsString(Cpp::GetVariableType(Decls[6])), "E<int>");
   EXPECT_EQ(Cpp::GetTypeAsString(Cpp::GetVariableType(Decls[7])), "E<int> *");
   EXPECT_EQ(Cpp::GetTypeAsString(Cpp::GetVariableType(Decls[8])), "int[4]");
+
+  EXPECT_FALSE(Cpp::IsLambdaClass(Cpp::GetVariableType(Decls[8])));
+  EXPECT_TRUE(Cpp::IsLambdaClass(Cpp::GetVariableType(Decls[9])));
 }
 
 #define CODE                                                                   \