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gmock: improve SFINAE for actions involving arguments.

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Avoid instantiating functions like std::get<index> for an out of range index
when doing SFINAE on the invocability of the action itself.

PiperOrigin-RevId: 439415110
Change-Id: Ifc20285a6d526c34830870cd1910c2b2b92e1e81
This commit is contained in:
Abseil Team 2022-04-04 14:38:08 -07:00 committed by Copybara-Service
parent 3ffa237f0e
commit 137f67e91f
2 changed files with 4 additions and 2 deletions
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3
googlemock/include/gmock/gmock-actions.h
View File

@ -1077,7 +1077,8 @@ struct ReturnNewAction {
template <size_t k>
struct ReturnArgAction {
template <typename... Args>
template <typename... Args,
typename = typename std::enable_if<(k < sizeof...(Args))>::type>
auto operator()(Args&&... args) const -> decltype(std::get<k>(
std::forward_as_tuple(std::forward<Args>(args)...))) {
return std::get<k>(std::forward_as_tuple(std::forward<Args>(args)...));

3
googlemock/include/gmock/gmock-more-actions.h
View File

@ -600,7 +600,8 @@ auto InvokeArgument(F f, Args... args) -> decltype(f(args...)) {
template <std::size_t index, typename... Params>
struct InvokeArgumentAction {
template <typename... Args>
template <typename... Args,
typename = typename std::enable_if<(index < sizeof...(Args))>::type>
auto operator()(Args&&... args) const -> decltype(internal::InvokeArgument(
std::get<index>(std::forward_as_tuple(std::forward<Args>(args)...)),
std::declval<const Params&>()...)) {