40fce32501
CallableTraitsHelper identifies the return type and argument types of a callable type and passes those to an implementation class template to operate on. The CallableArgInfo utility uses CallableTraitsHelper to provide typedefs for the return type and argument types (as a tuple) of a callable type. In WrapperFunction.h, the detail::WFCallableTraits utility is rewritten in terms of CallableTraitsHandler (and renamed to WFHandlerTraits).
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
//===- CallableTraitsHelperTest.cpp ---------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Tests for orc-rt's CallableTraitsHelper.h APIs.
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//
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// NOTE: All tests in this file are testing compile-time functionality, so the
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// tests at runtime all end up being noops. That's fine -- those are
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// cheap.
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//===----------------------------------------------------------------------===//
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#include "orc-rt/CallableTraitsHelper.h"
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#include "gtest/gtest.h"
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using namespace orc_rt;
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static void freeVoidVoid() {}
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TEST(CallableTraitsHelperTest, FreeVoidVoid) {
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(void)freeVoidVoid;
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typedef CallableArgInfo<decltype(freeVoidVoid)> CAI;
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static_assert(std::is_void_v<CAI::return_type>);
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<>>);
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}
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static int freeBinaryOp(int, float) { return 0; }
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TEST(CallableTraitsHelperTest, FreeBinaryOp) {
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(void)freeBinaryOp;
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typedef CallableArgInfo<decltype(freeBinaryOp)> CAI;
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static_assert(std::is_same_v<CAI::return_type, int>);
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<int, float>>);
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}
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TEST(CallableTraitsHelperTest, VoidVoidObj) {
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auto VoidVoid = []() {};
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typedef CallableArgInfo<decltype(VoidVoid)> CAI;
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static_assert(std::is_void_v<CAI::return_type>);
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<>>);
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}
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TEST(CallableTraitsHelperTest, BinaryOpObj) {
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auto BinaryOp = [](int X, float Y) -> int { return X + Y; };
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typedef CallableArgInfo<decltype(BinaryOp)> CAI;
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static_assert(std::is_same_v<CAI::return_type, int>);
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<int, float>>);
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}
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TEST(CallableTraitsHelperTest, PreservesLValueRef) {
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auto RefOp = [](int &) {};
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typedef CallableArgInfo<decltype(RefOp)> CAI;
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<int &>>);
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}
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TEST(CallableTraitsHelperTest, PreservesLValueRefConstness) {
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auto RefOp = [](const int &) {};
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typedef CallableArgInfo<decltype(RefOp)> CAI;
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<const int &>>);
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}
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TEST(CallableTraitsHelperTest, PreservesRValueRef) {
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auto RefOp = [](int &&) {};
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typedef CallableArgInfo<decltype(RefOp)> CAI;
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static_assert(std::is_same_v<CAI::args_tuple_type, std::tuple<int &&>>);
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}
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