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reuse IndexSequence from googletest

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This commit is contained in:
Krystian Kuzniarek
2019-08-14 14:21:32 +02:00
parent 90a443f9c2
commit 6a015ca1cb
1 changed files with 3 additions and 14 deletions
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17
googlemock/include/gmock/internal/gmock-internal-utils.h
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@@ -506,19 +506,8 @@ struct BooleanConstant {};
// reduce code size. // reduce code size.
GTEST_API_ void IllegalDoDefault(const char* file, int line); GTEST_API_ void IllegalDoDefault(const char* file, int line);
// Helper types for Apply() below.
template <size_t... Is> struct int_pack { typedef int_pack type; };
template <class Pack, size_t I> struct append;
template <size_t... Is, size_t I>
struct append<int_pack<Is...>, I> : int_pack<Is..., I> {};
template <size_t C>
struct make_int_pack : append<typename make_int_pack<C - 1>::type, C - 1> {};
template <> struct make_int_pack<0> : int_pack<> {};
template <typename F, typename Tuple, size_t... Idx> template <typename F, typename Tuple, size_t... Idx>
auto ApplyImpl(F&& f, Tuple&& args, int_pack<Idx...>) -> decltype( auto ApplyImpl(F&& f, Tuple&& args, IndexSequence<Idx...>) -> decltype(
std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...)) { std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...)) {
return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...); return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...);
} }
@@ -527,9 +516,9 @@ auto ApplyImpl(F&& f, Tuple&& args, int_pack<Idx...>) -> decltype(
template <typename F, typename Tuple> template <typename F, typename Tuple>
auto Apply(F&& f, Tuple&& args) auto Apply(F&& f, Tuple&& args)
-> decltype(ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args), -> decltype(ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
make_int_pack<std::tuple_size<Tuple>::value>())) { MakeIndexSequence<std::tuple_size<Tuple>::value>())) {
return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args), return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
make_int_pack<std::tuple_size<Tuple>::value>()); MakeIndexSequence<std::tuple_size<Tuple>::value>());
} }
// Template struct Function<F>, where F must be a function type, contains // Template struct Function<F>, where F must be a function type, contains