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util: make offsetof/parent-of-member actually constexpr

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This commit is contained in:
Michael Scire 2020-01-15 21:35:14 -08:00
parent f3fa680d5d
commit da59334c5e
6 changed files with 211 additions and 35 deletions
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12
libraries/libvapours/include/vapours/util/util_scope_guard.hpp
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@ -29,24 +29,24 @@ namespace ams::util {
F f;
bool active;
public:
constexpr ScopeGuard(F f) : f(std::move(f)), active(true) { }
~ScopeGuard() { if (active) { f(); } }
void Cancel() { active = false; }
constexpr ALWAYS_INLINE ScopeGuard(F f) : f(std::move(f)), active(true) { }
ALWAYS_INLINE ~ScopeGuard() { if (active) { f(); } }
ALWAYS_INLINE void Cancel() { active = false; }
ScopeGuard(ScopeGuard&& rhs) : f(std::move(rhs.f)), active(rhs.active) {
ALWAYS_INLINE ScopeGuard(ScopeGuard&& rhs) : f(std::move(rhs.f)), active(rhs.active) {
rhs.Cancel();
}
};
template<class F>
constexpr ScopeGuard<F> MakeScopeGuard(F f) {
constexpr ALWAYS_INLINE ScopeGuard<F> MakeScopeGuard(F f) {
return ScopeGuard<F>(std::move(f));
}
enum class ScopeGuardOnExit {};
template <typename F>
constexpr ScopeGuard<F> operator+(ScopeGuardOnExit, F&& f) {
constexpr ALWAYS_INLINE ScopeGuard<F> operator+(ScopeGuardOnExit, F&& f) {
return ScopeGuard<F>(std::forward<F>(f));
}