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add GetTemplateInstantiatedFunctions #642

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9 changes: 9 additions & 0 deletions include/CppInterOp/CppInterOp.h
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Original file line number Diff line number Diff line change
Expand Up @@ -426,6 +426,15 @@ CPPINTEROP_API void
GetFunctionTemplatedDecls(TCppScope_t klass,
std::vector<TCppFunction_t>& methods);

/// Returns instantiated functions with the given templated function name
///\param[in] name - name of the templated function
///\param[in] scope - Pointer to the scope/class under which the functions have
/// to be retrieved
///\param[out] methods - Vector of methods in the class
CPPINTEROP_API void
GetTemplateInstantiatedFunctions(const std::string& name, TCppScope_t scope,
std::vector<TCppFunction_t>& methods);

///\returns if a class has a default constructor.
CPPINTEROP_API bool HasDefaultConstructor(TCppScope_t scope);

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15 changes: 15 additions & 0 deletions lib/CppInterOp/CppInterOp.cpp
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Expand Up @@ -863,6 +863,21 @@ void GetFunctionTemplatedDecls(TCppScope_t klass,
GetClassDecls<FunctionTemplateDecl>(klass, methods);
}

void GetTemplateInstantiatedFunctions(const std::string& name,
TCppScope_t scope,
std::vector<TCppFunction_t>& methods) {
std::vector<TCppFunction_t> tmpl_funcs;
GetClassTemplatedMethods(name, scope, tmpl_funcs);
for (TCppFunction_t i : tmpl_funcs) {
auto* D = static_cast<Decl*>(i);
if (auto* FTD = llvm::dyn_cast<FunctionTemplateDecl>(D)) {
for (FunctionDecl* FD : FTD->specializations()) {
methods.push_back(FD);
}
}
}
}

bool HasDefaultConstructor(TCppScope_t scope) {
auto* D = (clang::Decl*)scope;

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20 changes: 20 additions & 0 deletions unittests/CppInterOp/FunctionReflectionTest.cpp
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Expand Up @@ -345,6 +345,26 @@ TEST(FunctionReflectionTest, GetFunctionTemplatedDecls) {
EXPECT_EQ(Cpp::GetName(template_methods[3]), Cpp::GetName(SubDecls[6]));
}

TEST(FunctionReflectionTest, GetTemplateInstantiatedFunctions) {
Cpp::Declare(R"(
template<class T>
T my_templated_function(T t) { return t; }

template char my_templated_function<char>(char);
template double my_templated_function<double>(double);
)");

std::vector<Cpp::TCppFunction_t> template_methods;
Cpp::GetTemplateInstantiatedFunctions(
"my_templated_function", Cpp::GetGlobalScope(), template_methods);

EXPECT_EQ(template_methods.size(), 2);
EXPECT_EQ(Cpp::GetFunctionSignature(template_methods[0]),
"template<> char my_templated_function<char>(char t)");
EXPECT_EQ(Cpp::GetFunctionSignature(template_methods[1]),
"template<> double my_templated_function<double>(double t)");
}

TEST(FunctionReflectionTest, GetFunctionReturnType) {
std::vector<Decl*> Decls, SubDecls, TemplateSubDecls;
std::string code = R"(
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