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Avoid using std::result_of when std::invoke_result is available

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Martin Hořeňovský 2020-05-21 21:39:19 +02:00
parent 21d284df34
commit 1356788ea8
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GPG Key ID: DE48307B8B0D381A
5 changed files with 15 additions and 17 deletions
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9
src/catch2/benchmark/detail/catch_complete_invoke.hpp
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@ -12,6 +12,7 @@
#define TWOBLUECUBES_CATCH_DETAIL_COMPLETE_INVOKE_HPP_INCLUDED
#include <catch2/internal/catch_enforce.hpp>
#include <catch2/internal/catch_meta.hpp>
#include <catch2/interfaces/catch_interfaces_capture.hpp>
#include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
@ -44,20 +45,18 @@ namespace Catch {
return {};
}
};
template <typename Sig>
using ResultOf_t = typename std::result_of<Sig>::type;
// invoke and not return void :(
template <typename Fun, typename... Args>
CompleteType_t<ResultOf_t<Fun(Args...)>> complete_invoke(Fun&& fun, Args&&... args) {
return CompleteInvoker<ResultOf_t<Fun(Args...)>>::invoke(std::forward<Fun>(fun), std::forward<Args>(args)...);
CompleteType_t<FunctionReturnType<Fun, Args...>> complete_invoke(Fun&& fun, Args&&... args) {
return CompleteInvoker<FunctionReturnType<Fun, Args...>>::invoke(std::forward<Fun>(fun), std::forward<Args>(args)...);
}
extern const std::string benchmarkErrorMsg;
} // namespace Detail
template <typename Fun>
Detail::CompleteType_t<Detail::ResultOf_t<Fun()>> user_code(Fun&& fun) {
Detail::CompleteType_t<FunctionReturnType<Fun>> user_code(Fun&& fun) {
CATCH_TRY{
return Detail::complete_invoke(std::forward<Fun>(fun));
} CATCH_CATCH_ALL{

2
src/catch2/benchmark/detail/catch_measure.hpp
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@ -21,7 +21,7 @@ namespace Catch {
namespace Benchmark {
namespace Detail {
template <typename Clock, typename Fun, typename... Args>
TimingOf<Clock, Fun(Args...)> measure(Fun&& fun, Args&&... args) {
TimingOf<Clock, Fun, Args...> measure(Fun&& fun, Args&&... args) {
auto start = Clock::now();
auto&& r = Detail::complete_invoke(fun, std::forward<Args>(args)...);
auto end = Clock::now();

6
src/catch2/benchmark/detail/catch_run_for_at_least.hpp
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@ -25,11 +25,11 @@ namespace Catch {
namespace Benchmark {
namespace Detail {
template <typename Clock, typename Fun>
TimingOf<Clock, Fun(int)> measure_one(Fun&& fun, int iters, std::false_type) {
TimingOf<Clock, Fun, int> measure_one(Fun&& fun, int iters, std::false_type) {
return Detail::measure<Clock>(fun, iters);
}
template <typename Clock, typename Fun>
TimingOf<Clock, Fun(Chronometer)> measure_one(Fun&& fun, int iters, std::true_type) {
TimingOf<Clock, Fun, Chronometer> measure_one(Fun&& fun, int iters, std::true_type) {
Detail::ChronometerModel<Clock> meter;
auto&& result = Detail::complete_invoke(fun, Chronometer(meter, iters));
@ -44,7 +44,7 @@ namespace Catch {
void throw_optimized_away_error();
template <typename Clock, typename Fun>
TimingOf<Clock, Fun(run_for_at_least_argument_t<Clock, Fun>)> run_for_at_least(ClockDuration<Clock> how_long, int seed, Fun&& fun) {
TimingOf<Clock, Fun, run_for_at_least_argument_t<Clock, Fun>> run_for_at_least(ClockDuration<Clock> how_long, int seed, Fun&& fun) {
auto iters = seed;
while (iters < (1 << 30)) {
auto&& Timing = measure_one<Clock>(fun, iters, is_callable<Fun(Chronometer)>());

4
src/catch2/benchmark/detail/catch_timing.hpp
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@ -24,8 +24,8 @@ namespace Catch {
Result result;
int iterations;
};
template <typename Clock, typename Sig>
using TimingOf = Timing<ClockDuration<Clock>, Detail::CompleteType_t<Detail::ResultOf_t<Sig>>>;
template <typename Clock, typename Func, typename... Args>
using TimingOf = Timing<ClockDuration<Clock>, Detail::CompleteType_t<FunctionReturnType<Func, Args...>>>;
} // namespace Benchmark
} // namespace Catch

11
src/catch2/internal/catch_meta.hpp
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@ -32,13 +32,12 @@ namespace Catch {
#if defined(__cpp_lib_is_invocable) && __cpp_lib_is_invocable >= 201703
// std::result_of is deprecated in C++17 and removed in C++20. Hence, it is
// replaced with std::invoke_result here. Also *_t format is preferred over
// typename *::type format.
template <typename Func, typename U>
using FunctionReturnType = std::remove_reference_t<std::remove_cv_t<std::invoke_result_t<Func, U>>>;
// replaced with std::invoke_result here.
template <typename Func, typename... U>
using FunctionReturnType = std::remove_reference_t<std::remove_cv_t<std::invoke_result_t<Func, U...>>>;
#else
template <typename Func, typename U>
using FunctionReturnType = std::remove_reference_t<std::remove_cv_t<std::result_of_t<Func(U)>>>;
template <typename Func, typename... U>
using FunctionReturnType = std::remove_reference_t<std::remove_cv_t<std::result_of_t<Func(U...)>>>;
#endif
} // namespace Catch