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#pragma once
namespace nall {
template<typename T>
struct Instance {
~Instance() {
destruct();
}
auto operator()() -> T& {
return instance.object;
}
template<typename... P>
auto construct(P&&... p) {
if(constructed) return;
constructed = true;
new((void*)(&instance.object)) T(forward<P>(p)...);
}
auto destruct() -> void {
if(!constructed) return;
constructed = false;
instance.object.~T();
}
private:
bool constructed = false;
union Union {
Union() {}
~Union() {}
T object;
char storage[sizeof(T)];
} instance;
};
}
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