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switch to C++17

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Time to move on, two years after 2017.
This commit is contained in:
Max Kellermann
2019-08-02 07:25:13 +02:00
parent c764b70b3a
commit 8f981845dc
9 changed files with 103 additions and 37 deletions
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116
src/util/BindMethod.hxx
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2016 Max Kellermann <max.kellermann@gmail.com>
* Copyright 2016-2018 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -30,6 +30,8 @@
#ifndef BIND_METHOD_HXX
#define BIND_METHOD_HXX
#include "Compiler.h"
#include <type_traits>
#include <utility>
@@ -43,9 +45,21 @@
template<typename S=void()>
class BoundMethod;
template<typename R, typename... Args>
class BoundMethod<R(Args...)> {
typedef R (*function_pointer)(void *instance, Args... args);
#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
;
void *instance_;
function_pointer function;
@@ -91,9 +105,21 @@ namespace BindMethodDetail {
template<typename T, typename S>
struct MethodWithSignature;
template<typename T, typename R, typename... Args>
struct MethodWithSignature<T, R(Args...)> {
typedef R (T::*method_pointer)(Args...);
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
;
};
/**
@@ -104,8 +130,12 @@ struct MethodWithSignature<T, R(Args...)> {
template<typename M>
struct MethodSignatureHelper;
template<typename R, typename T, typename... Args>
struct MethodSignatureHelper<R (T::*)(Args...)> {
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename T, typename... Args>
struct MethodSignatureHelper<R (T::*)(Args...) noexcept(NoExcept)> {
/**
* The class which contains the given method (signature).
*/
@@ -115,7 +145,11 @@ struct MethodSignatureHelper<R (T::*)(Args...)> {
* A function type which describes the "plain" function
* signature.
*/
typedef R plain_signature(Args...);
typedef R plain_signature(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
};
/**
@@ -125,9 +159,17 @@ struct MethodSignatureHelper<R (T::*)(Args...)> {
template<typename S>
struct MethodWrapperWithSignature;
template<typename R, typename... Args>
struct MethodWrapperWithSignature<R(Args...)> {
typedef R (*function_pointer)(void *instance, Args...);
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename... Args>
struct MethodWrapperWithSignature<R(Args...) noexcept(NoExcept)> {
typedef R (*function_pointer)(void *instance, Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
};
/**
@@ -140,9 +182,9 @@ struct MethodWrapperWithSignature<R(Args...)> {
* @param R the return type
* @param Args the method arguments
*/
template<typename T, typename M, M method, typename R, typename... Args>
template<typename T, bool NoExcept, typename M, M method, typename R, typename... Args>
struct BindMethodWrapperGenerator2 {
static R Invoke(void *_instance, Args... args) {
static R Invoke(void *_instance, Args... args) noexcept(NoExcept) {
auto &t = *(T *)_instance;
return (t.*method)(std::forward<Args>(args)...);
}
@@ -159,9 +201,13 @@ struct BindMethodWrapperGenerator2 {
template<typename T, typename M, M method, typename S>
struct BindMethodWrapperGenerator;
template<typename T, typename M, M method, typename R, typename... Args>
struct BindMethodWrapperGenerator<T, M, method, R(Args...)>
: BindMethodWrapperGenerator2<T, M, method, R, Args...> {
template<typename T,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename M, M method, typename R, typename... Args>
struct BindMethodWrapperGenerator<T, M, method, R(Args...) noexcept(NoExcept)>
: BindMethodWrapperGenerator2<T, NoExcept, M, method, R, Args...> {
};
template<typename T, typename S,
@@ -180,19 +226,31 @@ MakeBindMethodWrapper() noexcept
template<typename S>
struct FunctionTraits;
template<typename R, typename... Args>
struct FunctionTraits<R(Args...)> {
template<typename R,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename... Args>
struct FunctionTraits<R(Args...) noexcept(NoExcept)> {
/**
* A function type which describes the "plain" function
* signature.
*/
typedef R function_type(Args...);
typedef R function_type(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
/**
* A function pointer type which describes the "plain"
* function signature.
*/
typedef R (*pointer_type)(Args...);
typedef R (*pointer_type)(Args...)
#if !GCC_OLDER_THAN(7,0)
noexcept(NoExcept)
#endif
;
};
/**
@@ -205,9 +263,9 @@ struct FunctionTraits<R(Args...)> {
* @param R the return type
* @param Args the function arguments
*/
template<typename F, F function, typename R, typename... Args>
template<bool NoExcept, typename F, F function, typename R, typename... Args>
struct BindFunctionWrapperGenerator2 {
static R Invoke(void *, Args... args) {
static R Invoke(void *, Args... args) noexcept(NoExcept) {
return function(std::forward<Args>(args)...);
}
};
@@ -222,9 +280,13 @@ struct BindFunctionWrapperGenerator2 {
template<typename S, typename P, P function>
struct BindFunctionWrapperGenerator;
template<typename P, P function, typename R, typename... Args>
struct BindFunctionWrapperGenerator<R(Args...), P, function>
: BindFunctionWrapperGenerator2<P, function, R, Args...> {
template<typename P, P function,
#if !GCC_OLDER_THAN(7,0)
bool NoExcept,
#endif
typename R, typename... Args>
struct BindFunctionWrapperGenerator<R(Args...) noexcept(NoExcept), P, function>
: BindFunctionWrapperGenerator2<NoExcept, P, function, R, Args...> {
};
template<typename T, typename T::pointer_type function>