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util/BindMethod: drop support for GCC older than 7

This commit is contained in:
Max Kellermann 2021-04-20 19:57:02 +02:00
parent 95ad1b0cc6
commit 0122dc8452
1 changed files with 13 additions and 69 deletions
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82
src/util/BindMethod.hxx
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@ -30,8 +30,6 @@
#ifndef BIND_METHOD_HXX
#define BIND_METHOD_HXX
#include "Compiler.h"
#include <type_traits>
#include <utility>
@ -45,21 +43,11 @@
template<typename S=void()>
class BoundMethod;
#if GCC_OLDER_THAN(7,0)
static constexpr bool NoExcept = false;
#endif
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename... Args>
class BoundMethod<R(Args...) noexcept(NoExcept)> {
typedef R (*function_pointer)(void *instance, Args... args)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
typedef R (*function_pointer)(void *instance, Args... args) noexcept(NoExcept);
void *instance_;
function_pointer function;
@ -106,20 +94,10 @@ template<typename T, typename S>
struct MethodWithSignature;
template<typename T,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename R, typename... Args>
struct MethodWithSignature<T, R(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
> {
typedef R (T::*method_pointer)(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
struct MethodWithSignature<T, R(Args...) noexcept(NoExcept)> {
typedef R (T::*method_pointer)(Args...) noexcept(NoExcept);
};
/**
@ -130,11 +108,7 @@ struct MethodWithSignature<T, R(Args...)
template<typename M>
struct MethodSignatureHelper;
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename T, typename... Args>
template<typename R, bool NoExcept, typename T, typename... Args>
struct MethodSignatureHelper<R (T::*)(Args...) noexcept(NoExcept)> {
/**
* The class which contains the given method (signature).
@ -145,11 +119,7 @@ struct MethodSignatureHelper<R (T::*)(Args...) noexcept(NoExcept)> {
* A function type which describes the "plain" function
* signature.
*/
typedef R plain_signature(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
typedef R plain_signature(Args...) noexcept(NoExcept);
};
/**
@ -159,17 +129,10 @@ struct MethodSignatureHelper<R (T::*)(Args...) noexcept(NoExcept)> {
template<typename S>
struct MethodWrapperWithSignature;
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename... Args>
template<typename R, bool NoExcept, typename... Args>
struct MethodWrapperWithSignature<R(Args...) noexcept(NoExcept)> {
typedef R (*function_pointer)(void *instance, Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
typedef R (*function_pointer)(void *instance,
Args...) noexcept(NoExcept);
};
/**
@ -201,10 +164,7 @@ struct BindMethodWrapperGenerator2 {
template<typename T, typename M, M method, typename S>
struct BindMethodWrapperGenerator;
template<typename T,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
template<typename T, bool NoExcept,
typename M, M method, typename R, typename... Args>
struct BindMethodWrapperGenerator<T, M, method, R(Args...) noexcept(NoExcept)>
: BindMethodWrapperGenerator2<T, NoExcept, M, method, R, Args...> {
@ -226,31 +186,19 @@ MakeBindMethodWrapper() noexcept
template<typename S>
struct FunctionTraits;
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename... Args>
template<typename R, bool NoExcept, typename... Args>
struct FunctionTraits<R(Args...) noexcept(NoExcept)> {
/**
* A function type which describes the "plain" function
* signature.
*/
typedef R function_type(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
typedef R function_type(Args...) noexcept(NoExcept);
/**
* A function pointer type which describes the "plain"
* function signature.
*/
typedef R (*pointer)(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
typedef R (*pointer)(Args...) noexcept(NoExcept);
};
/**
@ -280,11 +228,7 @@ struct BindFunctionWrapperGenerator2 {
template<typename S, typename P, P function>
struct BindFunctionWrapperGenerator;
template<typename P, P function,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename R, typename... Args>
template<typename P, P function, bool NoExcept, typename R, typename... Args>
struct BindFunctionWrapperGenerator<R(Args...) noexcept(NoExcept), P, function>
: BindFunctionWrapperGenerator2<NoExcept, P, function, R, Args...> {
};