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util/BindMethod: eliminate struct BindMethodWrapperGenerator2

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Max Kellermann 2021-12-02 22:45:04 +01:00 committed by Max Kellermann
parent eca097dbfb
commit 6fcd1c734b
1 changed files with 9 additions and 38 deletions
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47
src/util/BindMethod.hxx
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@ -134,23 +134,6 @@ struct MethodWrapperWithSignature<R(Args...) noexcept(NoExcept)> {
Args...) noexcept(NoExcept); Args...) noexcept(NoExcept);
}; };
/**
* Generate a wrapper function. Helper class for
* #BindMethodWrapperGenerator.
*
* @param T the containing class
* @param method the method pointer
* @param R the return type
* @param Args the method arguments
*/
template<typename T, bool NoExcept, auto method, typename R, typename... Args>
struct BindMethodWrapperGenerator2 {
static R Invoke(void *_instance, Args... args) noexcept(NoExcept) {
auto &t = *(T *)_instance;
return (t.*method)(std::forward<Args>(args)...);
}
};
/** /**
* Generate a wrapper function. * Generate a wrapper function.
* *
@ -163,8 +146,11 @@ struct BindMethodWrapperGenerator;
template<typename T, bool NoExcept, template<typename T, bool NoExcept,
auto method, typename R, typename... Args> auto method, typename R, typename... Args>
struct BindMethodWrapperGenerator<T, method, R(Args...) noexcept(NoExcept)> struct BindMethodWrapperGenerator<T, method, R(Args...) noexcept(NoExcept)> {
: BindMethodWrapperGenerator2<T, NoExcept, method, R, Args...> { static R Invoke(void *_instance, Args... args) noexcept(NoExcept) {
auto &t = *(T *)_instance;
return (t.*method)(std::forward<Args>(args)...);
}
}; };
template<typename T, typename S, template<typename T, typename S,
@ -198,23 +184,6 @@ struct FunctionTraits<R(Args...) noexcept(NoExcept)> {
typedef R (*pointer)(Args...) noexcept(NoExcept); typedef R (*pointer)(Args...) noexcept(NoExcept);
}; };
/**
* Generate a wrapper function for a plain function which ignores the
* instance pointer. Helper class for
* #BindFunctionWrapperGenerator.
*
* @param F the function pointer type
* @param function the function pointer
* @param R the return type
* @param Args the function arguments
*/
template<bool NoExcept, typename F, F function, typename R, typename... Args>
struct BindFunctionWrapperGenerator2 {
static R Invoke(void *, Args... args) noexcept(NoExcept) {
return function(std::forward<Args>(args)...);
}
};
/** /**
* Generate a wrapper function. * Generate a wrapper function.
* *
@ -226,8 +195,10 @@ template<typename S, typename P, P function>
struct BindFunctionWrapperGenerator; struct BindFunctionWrapperGenerator;
template<typename P, P function, bool NoExcept, typename R, typename... Args> template<typename P, P function, bool NoExcept, typename R, typename... Args>
struct BindFunctionWrapperGenerator<R(Args...) noexcept(NoExcept), P, function> struct BindFunctionWrapperGenerator<R(Args...) noexcept(NoExcept), P, function> {
: BindFunctionWrapperGenerator2<NoExcept, P, function, R, Args...> { static R Invoke(void *, Args... args) noexcept(NoExcept) {
return function(std::forward<Args>(args)...);
}
}; };
template<typename T, typename T::pointer function> template<typename T, typename T::pointer function>