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Update GetFunctionArgName API for template functions #224

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Merged
merged 2 commits into from
Apr 10, 2024
Merged

Update GetFunctionArgName API for template functions #224

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7f40579
Update GetFunctionArgName API
aaronj0 Apr 9, 2024
96559b7
Update tests
aaronj0 Apr 9, 2024
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8 changes: 6 additions & 2 deletions lib/Interpreter/CppInterOp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3047,8 +3047,12 @@ namespace Cpp {
std::string GetFunctionArgName(TCppFunction_t func, TCppIndex_t param_index)
{
auto *D = (clang::Decl *)func;
auto *FD = llvm::cast<clang::FunctionDecl>(D);
auto PI = FD->getParamDecl(param_index);
clang::ParmVarDecl* PI;
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warning: variable 'PI' is not initialized [cppcoreguidelines-init-variables]

Suggested change
clang::ParmVarDecl* PI;
clang::ParmVarDecl* PI = nullptr;


if (auto* FD = llvm::dyn_cast_or_null<clang::FunctionDecl>(D))
PI = FD->getParamDecl(param_index);
else if (auto* FD = llvm::dyn_cast_or_null<clang::FunctionTemplateDecl>(D))
PI = (FD->getTemplatedDecl())->getParamDecl(param_index);

return PI->getNameAsString();
}
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22 changes: 22 additions & 0 deletions unittests/CppInterOp/FunctionReflectionTest.cpp
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Expand Up @@ -818,6 +818,15 @@ TEST(FunctionReflectionTest, GetFunctionArgName) {
std::string code = R"(
void f1(int i, double d, long l, char ch) {}
void f2(const int i, double d[], long *l, char ch[4]) {}

template<class A, class B>
long get_size(A, B, int i = 0) {}

template<class A = int, class B = char>
long get_size(int i, A a = A(), B b = B()) {}

template<class A>
void get_size(long k, A, char ch = 'a', double l = 0.0) {}
)";

GetAllTopLevelDecls(code, Decls);
Expand All @@ -829,6 +838,19 @@ TEST(FunctionReflectionTest, GetFunctionArgName) {
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[1], 1), "d");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[1], 2), "l");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[1], 3), "ch");

EXPECT_EQ(Cpp::GetFunctionArgName(Decls[2], 0), "");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[2], 1), "");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[2], 2), "i");

EXPECT_EQ(Cpp::GetFunctionArgName(Decls[3], 0), "i");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[3], 1), "a");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[3], 2), "b");

EXPECT_EQ(Cpp::GetFunctionArgName(Decls[4], 0), "k");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[4], 1), "");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[4], 2), "ch");
EXPECT_EQ(Cpp::GetFunctionArgName(Decls[4], 3), "l");
}

TEST(FunctionReflectionTest, GetFunctionArgDefault) {
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