mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 21:12:43 +00:00
0dc9af5f7e
Also run it across the whole tree to get everything using the One True Style. We don't yet run this in an automated fashion as it's a little slow, but there is a snippet to do so in makeall.sh.
112 lines
3.9 KiB
C++
112 lines
3.9 KiB
C++
/*
|
|
* Copyright (C) 2016 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "Assertions.h"
|
|
#include "OwnPtr.h"
|
|
#include "StdLibExtras.h"
|
|
|
|
namespace AK {
|
|
|
|
template<typename>
|
|
class Function;
|
|
|
|
template<typename Out, typename... In>
|
|
class Function<Out(In...)> {
|
|
public:
|
|
Function() = default;
|
|
Function(std::nullptr_t) {}
|
|
|
|
template<typename CallableType, class = typename EnableIf<!(IsPointer<CallableType>::value && IsFunction<typename RemovePointer<CallableType>::Type>::value) && IsRvalueReference<CallableType&&>::value>::Type>
|
|
Function(CallableType&& callable)
|
|
: m_callable_wrapper(make<CallableWrapper<CallableType>>(move(callable)))
|
|
{
|
|
}
|
|
|
|
template<typename FunctionType, class = typename EnableIf<IsPointer<FunctionType>::value && IsFunction<typename RemovePointer<FunctionType>::Type>::value>::Type>
|
|
Function(FunctionType f)
|
|
: m_callable_wrapper(make<CallableWrapper<FunctionType>>(move(f)))
|
|
{
|
|
}
|
|
|
|
Out operator()(In... in) const
|
|
{
|
|
ASSERT(m_callable_wrapper);
|
|
return m_callable_wrapper->call(forward<In>(in)...);
|
|
}
|
|
|
|
explicit operator bool() const { return !!m_callable_wrapper; }
|
|
|
|
template<typename CallableType, class = typename EnableIf<!(IsPointer<CallableType>::value && IsFunction<typename RemovePointer<CallableType>::Type>::value) && IsRvalueReference<CallableType&&>::value>::Type>
|
|
Function& operator=(CallableType&& callable)
|
|
{
|
|
m_callable_wrapper = make<CallableWrapper<CallableType>>(move(callable));
|
|
return *this;
|
|
}
|
|
|
|
template<typename FunctionType, class = typename EnableIf<IsPointer<FunctionType>::value && IsFunction<typename RemovePointer<FunctionType>::Type>::value>::Type>
|
|
Function& operator=(FunctionType f)
|
|
{
|
|
m_callable_wrapper = make<CallableWrapper<FunctionType>>(move(f));
|
|
return *this;
|
|
}
|
|
|
|
Function& operator=(std::nullptr_t)
|
|
{
|
|
m_callable_wrapper = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
private:
|
|
class CallableWrapperBase {
|
|
public:
|
|
virtual ~CallableWrapperBase() {}
|
|
virtual Out call(In...) const = 0;
|
|
};
|
|
|
|
template<typename CallableType>
|
|
class CallableWrapper final : public CallableWrapperBase {
|
|
public:
|
|
explicit CallableWrapper(CallableType&& callable)
|
|
: m_callable(move(callable))
|
|
{
|
|
}
|
|
|
|
CallableWrapper(const CallableWrapper&) = delete;
|
|
CallableWrapper& operator=(const CallableWrapper&) = delete;
|
|
|
|
Out call(In... in) const final override { return m_callable(forward<In>(in)...); }
|
|
|
|
private:
|
|
CallableType m_callable;
|
|
};
|
|
|
|
OwnPtr<CallableWrapperBase> m_callable_wrapper;
|
|
};
|
|
|
|
}
|
|
|
|
using AK::Function;
|