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Mark SkBitmaskEnum operators constexpr.

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Change-Id: I498beee590ff7728f4d49da28d9a2b9909409c48
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/232763
Reviewed-by: Hal Canary <halcanary@skia.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
This commit is contained in:
Ben Wagner 2019-08-06 17:10:55 -04:00 committed by Skia Commit-Bot
parent 593290ed75
commit 549476357c
1 changed files with 4 additions and 4 deletions
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8
include/private/SkBitmaskEnum.h
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@ -13,21 +13,21 @@ namespace skstd {
template <typename T> struct is_bitmask_enum : std::false_type {}; template <typename T> struct is_bitmask_enum : std::false_type {};
} }
template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E) operator|(E l, E r) { template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E) constexpr operator|(E l, E r) {
using U = typename std::underlying_type<E>::type; using U = typename std::underlying_type<E>::type;
return static_cast<E>(static_cast<U>(l) | static_cast<U>(r)); return static_cast<E>(static_cast<U>(l) | static_cast<U>(r));
} }
template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E&) operator|=(E& l, E r) { template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E&) constexpr operator|=(E& l, E r) {
return l = l | r; return l = l | r;
} }
template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E) operator&(E l, E r) { template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E) constexpr operator&(E l, E r) {
using U = typename std::underlying_type<E>::type; using U = typename std::underlying_type<E>::type;
return static_cast<E>(static_cast<U>(l) & static_cast<U>(r)); return static_cast<E>(static_cast<U>(l) & static_cast<U>(r));
} }
template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E&) operator&=(E& l, E r) { template <typename E> SK_WHEN(skstd::is_bitmask_enum<E>::value, E&) constexpr operator&=(E& l, E r) {
return l = l & r; return l = l & r;
} }