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| author | Kitsune Ral <Kitsune-Ral@users.sf.net> | 2018-07-08 14:50:54 +0900 |
|---|---|---|
| committer | Kitsune Ral <Kitsune-Ral@users.sf.net> | 2018-07-08 14:50:54 +0900 |
| commit | 08a3c52134cfc3458a86c2fc238f9a20a04e0c3c (patch) | |
| tree | e96987308ed66cf6b27363ae4e71a4a05b9b42d3 /lib/events | |
| parent | 0bfcf63e459e0cb4242d65acaf6e689f40c41ae3 (diff) | |
| download | libquotient-08a3c52134cfc3458a86c2fc238f9a20a04e0c3c.tar.gz libquotient-08a3c52134cfc3458a86c2fc238f9a20a04e0c3c.zip | |
Use constexpr functions instead of variables
MSVC struggles with template variables...
Diffstat (limited to 'lib/events')
| -rw-r--r-- | lib/events/event.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/lib/events/event.h b/lib/events/event.h index 7fd9868d..06cad5d1 100644 --- a/lib/events/event.h +++ b/lib/events/event.h @@ -308,16 +308,22 @@ namespace QMatrixClient } template <typename T> - constexpr auto is_event_v = std::is_base_of<Event, std::decay_t<T>>::value; + constexpr auto is_event() + { + return std::is_base_of<Event, std::decay_t<T>>::value; + } template <typename T, typename FnT> - constexpr auto needs_cast_v = !std::is_convertible<T, fn_arg_t<FnT>>::value; + constexpr auto needs_cast() + { + return !std::is_convertible<T, fn_arg_t<FnT>>::value; + } // A single type-specific void visitor template <typename BaseEventT, typename FnT> inline std::enable_if_t< - is_event_v<BaseEventT> && needs_cast_v<BaseEventT, FnT> && + is_event<BaseEventT>() && needs_cast<BaseEventT, FnT>() && std::is_void<fn_return_t<FnT>>::value> visit(const BaseEventT& event, FnT&& visitor) { @@ -330,7 +336,7 @@ namespace QMatrixClient template <typename BaseEventT, typename FnT> inline std::enable_if_t< - is_event_v<BaseEventT> && needs_cast_v<BaseEventT, FnT>, + is_event<BaseEventT>() && needs_cast<BaseEventT, FnT>(), fn_return_t<FnT>> // non-voidness is guarded by defaultValue type visit(const BaseEventT& event, FnT&& visitor, fn_return_t<FnT>&& defaultValue = {}) @@ -344,7 +350,7 @@ namespace QMatrixClient // A chain of 2 or more visitors template <typename BaseEventT, typename FnT1, typename FnT2, typename... FnTs> inline - std::enable_if_t<is_event_v<BaseEventT>, fn_return_t<FnT1>> + std::enable_if_t<is_event<BaseEventT>(), fn_return_t<FnT1>> visit(const BaseEventT& event, FnT1&& visitor1, FnT2&& visitor2, FnTs&&... visitors) { |