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Add Is/Get Pointer & Reference functions #510

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Merged
merged 1 commit into from
Feb 26, 2025
Merged

Add Is/Get Pointer & Reference functions #510

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12 changes: 12 additions & 0 deletions include/clang/Interpreter/CppInterOp.h
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Original file line number Diff line number Diff line change
Expand Up @@ -504,6 +504,18 @@ namespace Cpp {
/// Checks if the provided parameter is a Plain Old Data Type (POD).
CPPINTEROP_API bool IsPODType(TCppType_t type);

/// Checks if type is a pointer
CPPINTEROP_API bool IsPointerType(TCppType_t type);

/// Get the underlying pointee type
CPPINTEROP_API TCppType_t GetPointeeType(TCppType_t type);

/// Checks if type is a reference
CPPINTEROP_API bool IsReferenceType(TCppType_t type);

/// Get the type that the reference refers to
CPPINTEROP_API TCppType_t GetNonReferenceType(TCppType_t type);

/// Gets the pure, Underlying Type (as opposed to the Using Type).
CPPINTEROP_API TCppType_t GetUnderlyingType(TCppType_t type);

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24 changes: 24 additions & 0 deletions lib/Interpreter/CppInterOp.cpp
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Expand Up @@ -1493,6 +1493,30 @@ namespace Cpp {
return QT.isPODType(getASTContext());
}

bool IsPointerType(TCppType_t type) {
QualType QT = QualType::getFromOpaquePtr(type);
return QT->isPointerType();
}

TCppType_t GetPointeeType(TCppType_t type) {
if (!IsPointerType(type))
return nullptr;
QualType QT = QualType::getFromOpaquePtr(type);
return QT->getPointeeType().getAsOpaquePtr();
}

bool IsReferenceType(TCppType_t type) {
QualType QT = QualType::getFromOpaquePtr(type);
return QT->isReferenceType();
}

TCppType_t GetNonReferenceType(TCppType_t type) {
if (!IsReferenceType(type))
return nullptr;
QualType QT = QualType::getFromOpaquePtr(type);
return QT.getNonReferenceType().getAsOpaquePtr();
}

TCppType_t GetUnderlyingType(TCppType_t type)
{
QualType QT = QualType::getFromOpaquePtr(type);
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64 changes: 64 additions & 0 deletions unittests/CppInterOp/VariableReflectionTest.cpp
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Expand Up @@ -600,3 +600,67 @@ TEST(VariableReflectionTest, GetEnumConstantDatamembers) {
Cpp::GetEnumConstantDatamembers(MyEnumClass, datamembers2, false);
EXPECT_EQ(datamembers2.size(), 6);
}

TEST(VariableReflectionTest, Is_Get_Pointer) {
Cpp::CreateInterpreter();
std::vector<Decl*> Decls;
std::string code = R"(
class A {};
int a;
int *b;
double c;
double *d;
A e;
A *f;
)";

GetAllTopLevelDecls(code, Decls);

EXPECT_FALSE(Cpp::IsPointerType(Cpp::GetVariableType(Decls[1])));
EXPECT_TRUE(Cpp::IsPointerType(Cpp::GetVariableType(Decls[2])));
EXPECT_FALSE(Cpp::IsPointerType(Cpp::GetVariableType(Decls[3])));
EXPECT_TRUE(Cpp::IsPointerType(Cpp::GetVariableType(Decls[4])));
EXPECT_FALSE(Cpp::IsPointerType(Cpp::GetVariableType(Decls[5])));
EXPECT_TRUE(Cpp::IsPointerType(Cpp::GetVariableType(Decls[6])));

EXPECT_EQ(Cpp::GetPointeeType(Cpp::GetVariableType(Decls[2])),
Cpp::GetVariableType(Decls[1]));
EXPECT_EQ(Cpp::GetPointeeType(Cpp::GetVariableType(Decls[4])),
Cpp::GetVariableType(Decls[3]));
EXPECT_EQ(Cpp::GetPointeeType(Cpp::GetVariableType(Decls[6])),
Cpp::GetVariableType(Decls[5]));

EXPECT_FALSE(Cpp::GetPointeeType(Cpp::GetVariableType(Decls[5])));
}

TEST(VariableReflectionTest, Is_Get_Reference) {
Cpp::CreateInterpreter();
std::vector<Decl*> Decls;
std::string code = R"(
class A {};
int a;
int &b = a;
double c;
double &d = c;
A e;
A &f = e;
)";

GetAllTopLevelDecls(code, Decls);

EXPECT_FALSE(Cpp::IsReferenceType(Cpp::GetVariableType(Decls[1])));
EXPECT_TRUE(Cpp::IsReferenceType(Cpp::GetVariableType(Decls[2])));
EXPECT_FALSE(Cpp::IsReferenceType(Cpp::GetVariableType(Decls[3])));
EXPECT_TRUE(Cpp::IsReferenceType(Cpp::GetVariableType(Decls[4])));
EXPECT_FALSE(Cpp::IsReferenceType(Cpp::GetVariableType(Decls[5])));
EXPECT_TRUE(Cpp::IsReferenceType(Cpp::GetVariableType(Decls[6])));

EXPECT_EQ(Cpp::GetNonReferenceType(Cpp::GetVariableType(Decls[2])),
Cpp::GetVariableType(Decls[1]));
EXPECT_EQ(Cpp::GetNonReferenceType(Cpp::GetVariableType(Decls[4])),
Cpp::GetVariableType(Decls[3]));
EXPECT_EQ(Cpp::GetNonReferenceType(Cpp::GetVariableType(Decls[6])),
Cpp::GetVariableType(Decls[5]));

EXPECT_FALSE(Cpp::GetNonReferenceType(Cpp::GetVariableType(Decls[5])));
}
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