mirror of
https://github.com/darlinghq/darling-libcxx.git
synced 2024-11-23 11:59:52 +00:00
0949eedbd6
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@134190 91177308-0d34-0410-b5e6-96231b3b80d8
429 lines
10 KiB
C++
429 lines
10 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP_FUNCTIONAL_BASE
|
|
#define _LIBCPP_FUNCTIONAL_BASE
|
|
|
|
#include <__config>
|
|
#include <type_traits>
|
|
#include <typeinfo>
|
|
#include <exception>
|
|
|
|
#pragma GCC system_header
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
template <class _Arg, class _Result>
|
|
struct _LIBCPP_VISIBLE unary_function
|
|
{
|
|
typedef _Arg argument_type;
|
|
typedef _Result result_type;
|
|
};
|
|
|
|
template <class _Arg1, class _Arg2, class _Result>
|
|
struct _LIBCPP_VISIBLE binary_function
|
|
{
|
|
typedef _Arg1 first_argument_type;
|
|
typedef _Arg2 second_argument_type;
|
|
typedef _Result result_type;
|
|
};
|
|
|
|
template <class _Tp> struct _LIBCPP_VISIBLE hash;
|
|
|
|
template <class _Tp>
|
|
struct __has_result_type
|
|
{
|
|
private:
|
|
struct __two {char _; char __;};
|
|
template <class _Up> static __two __test(...);
|
|
template <class _Up> static char __test(typename _Up::result_type* = 0);
|
|
public:
|
|
static const bool value = sizeof(__test<_Tp>(0)) == 1;
|
|
};
|
|
|
|
#ifdef _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
#include <__functional_base_03>
|
|
|
|
#else // _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
// __weak_result_type
|
|
|
|
template <class _Tp>
|
|
struct __derives_from_unary_function
|
|
{
|
|
private:
|
|
struct __two {char _; char __;};
|
|
static __two __test(...);
|
|
template <class _A, class _R>
|
|
static unary_function<_A, _R>
|
|
__test(const volatile unary_function<_A, _R>*);
|
|
public:
|
|
static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value;
|
|
typedef decltype(__test((_Tp*)0)) type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __derives_from_binary_function
|
|
{
|
|
private:
|
|
struct __two {char _; char __;};
|
|
static __two __test(...);
|
|
template <class _A1, class _A2, class _R>
|
|
static binary_function<_A1, _A2, _R>
|
|
__test(const volatile binary_function<_A1, _A2, _R>*);
|
|
public:
|
|
static const bool value = !is_same<decltype(__test((_Tp*)0)), __two>::value;
|
|
typedef decltype(__test((_Tp*)0)) type;
|
|
};
|
|
|
|
template <class _Tp, bool = __derives_from_unary_function<_Tp>::value>
|
|
struct __maybe_derive_from_unary_function // bool is true
|
|
: public __derives_from_unary_function<_Tp>::type
|
|
{
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __maybe_derive_from_unary_function<_Tp, false>
|
|
{
|
|
};
|
|
|
|
template <class _Tp, bool = __derives_from_binary_function<_Tp>::value>
|
|
struct __maybe_derive_from_binary_function // bool is true
|
|
: public __derives_from_binary_function<_Tp>::type
|
|
{
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __maybe_derive_from_binary_function<_Tp, false>
|
|
{
|
|
};
|
|
|
|
template <class _Tp, bool = __has_result_type<_Tp>::value>
|
|
struct __weak_result_type_imp // bool is true
|
|
: public __maybe_derive_from_unary_function<_Tp>,
|
|
public __maybe_derive_from_binary_function<_Tp>
|
|
{
|
|
typedef typename _Tp::result_type result_type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __weak_result_type_imp<_Tp, false>
|
|
: public __maybe_derive_from_unary_function<_Tp>,
|
|
public __maybe_derive_from_binary_function<_Tp>
|
|
{
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __weak_result_type
|
|
: public __weak_result_type_imp<_Tp>
|
|
{
|
|
};
|
|
|
|
// 0 argument case
|
|
|
|
template <class _R>
|
|
struct __weak_result_type<_R ()>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R>
|
|
struct __weak_result_type<_R (&)()>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R>
|
|
struct __weak_result_type<_R (*)()>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
// 1 argument case
|
|
|
|
template <class _R, class _A1>
|
|
struct __weak_result_type<_R (_A1)>
|
|
: public unary_function<_A1, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _A1>
|
|
struct __weak_result_type<_R (&)(_A1)>
|
|
: public unary_function<_A1, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _A1>
|
|
struct __weak_result_type<_R (*)(_A1)>
|
|
: public unary_function<_A1, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C>
|
|
struct __weak_result_type<_R (_C::*)()>
|
|
: public unary_function<_C*, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C>
|
|
struct __weak_result_type<_R (_C::*)() const>
|
|
: public unary_function<const _C*, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C>
|
|
struct __weak_result_type<_R (_C::*)() volatile>
|
|
: public unary_function<volatile _C*, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C>
|
|
struct __weak_result_type<_R (_C::*)() const volatile>
|
|
: public unary_function<const volatile _C*, _R>
|
|
{
|
|
};
|
|
|
|
// 2 argument case
|
|
|
|
template <class _R, class _A1, class _A2>
|
|
struct __weak_result_type<_R (_A1, _A2)>
|
|
: public binary_function<_A1, _A2, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _A1, class _A2>
|
|
struct __weak_result_type<_R (*)(_A1, _A2)>
|
|
: public binary_function<_A1, _A2, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _A1, class _A2>
|
|
struct __weak_result_type<_R (&)(_A1, _A2)>
|
|
: public binary_function<_A1, _A2, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C, class _A1>
|
|
struct __weak_result_type<_R (_C::*)(_A1)>
|
|
: public binary_function<_C*, _A1, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C, class _A1>
|
|
struct __weak_result_type<_R (_C::*)(_A1) const>
|
|
: public binary_function<const _C*, _A1, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C, class _A1>
|
|
struct __weak_result_type<_R (_C::*)(_A1) volatile>
|
|
: public binary_function<volatile _C*, _A1, _R>
|
|
{
|
|
};
|
|
|
|
template <class _R, class _C, class _A1>
|
|
struct __weak_result_type<_R (_C::*)(_A1) const volatile>
|
|
: public binary_function<const volatile _C*, _A1, _R>
|
|
{
|
|
};
|
|
|
|
// 3 or more arguments
|
|
|
|
template <class _R, class _A1, class _A2, class _A3, class ..._A4>
|
|
struct __weak_result_type<_R (_A1, _A2, _A3, _A4...)>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R, class _A1, class _A2, class _A3, class ..._A4>
|
|
struct __weak_result_type<_R (&)(_A1, _A2, _A3, _A4...)>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R, class _A1, class _A2, class _A3, class ..._A4>
|
|
struct __weak_result_type<_R (*)(_A1, _A2, _A3, _A4...)>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R, class _C, class _A1, class _A2, class ..._A3>
|
|
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...)>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R, class _C, class _A1, class _A2, class ..._A3>
|
|
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...) const>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R, class _C, class _A1, class _A2, class ..._A3>
|
|
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...) volatile>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
template <class _R, class _C, class _A1, class _A2, class ..._A3>
|
|
struct __weak_result_type<_R (_C::*)(_A1, _A2, _A3...) const volatile>
|
|
{
|
|
typedef _R result_type;
|
|
};
|
|
|
|
// __invoke
|
|
|
|
// bullets 1 and 2
|
|
|
|
template <class _F, class _A0, class ..._Args>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
auto
|
|
__invoke(_F&& __f, _A0&& __a0, _Args&& ...__args)
|
|
-> decltype((_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...))
|
|
{
|
|
return (_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...);
|
|
}
|
|
|
|
template <class _F, class _A0, class ..._Args>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
auto
|
|
__invoke(_F&& __f, _A0&& __a0, _Args&& ...__args)
|
|
-> decltype(((*_VSTD::forward<_A0>(__a0)).*__f)(_VSTD::forward<_Args>(__args)...))
|
|
{
|
|
return ((*_VSTD::forward<_A0>(__a0)).*__f)(_VSTD::forward<_Args>(__args)...);
|
|
}
|
|
|
|
// bullets 3 and 4
|
|
|
|
template <class _F, class _A0>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
auto
|
|
__invoke(_F&& __f, _A0&& __a0)
|
|
-> decltype(_VSTD::forward<_A0>(__a0).*__f)
|
|
{
|
|
return _VSTD::forward<_A0>(__a0).*__f;
|
|
}
|
|
|
|
template <class _F, class _A0>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
auto
|
|
__invoke(_F&& __f, _A0&& __a0)
|
|
-> decltype((*_VSTD::forward<_A0>(__a0)).*__f)
|
|
{
|
|
return (*_VSTD::forward<_A0>(__a0)).*__f;
|
|
}
|
|
|
|
// bullet 5
|
|
|
|
template <class _F, class ..._Args>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
auto
|
|
__invoke(_F&& __f, _Args&& ...__args)
|
|
-> decltype(_VSTD::forward<_F>(__f)(_VSTD::forward<_Args>(__args)...))
|
|
{
|
|
return _VSTD::forward<_F>(__f)(_VSTD::forward<_Args>(__args)...);
|
|
}
|
|
|
|
template <class _Tp, class ..._Args>
|
|
struct __invoke_return
|
|
{
|
|
typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_Args>()...)) type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
class _LIBCPP_VISIBLE reference_wrapper
|
|
: public __weak_result_type<_Tp>
|
|
{
|
|
public:
|
|
// types
|
|
typedef _Tp type;
|
|
private:
|
|
type* __f_;
|
|
|
|
public:
|
|
// construct/copy/destroy
|
|
_LIBCPP_INLINE_VISIBILITY reference_wrapper(type& __f) _NOEXCEPT : __f_(&__f) {}
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
private: reference_wrapper(type&&); public: // = delete; // do not bind to temps
|
|
#endif
|
|
|
|
// access
|
|
_LIBCPP_INLINE_VISIBILITY operator type& () const _NOEXCEPT {return *__f_;}
|
|
_LIBCPP_INLINE_VISIBILITY type& get() const _NOEXCEPT {return *__f_;}
|
|
|
|
// invoke
|
|
template <class... _ArgTypes>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename __invoke_of<type&, _ArgTypes...>::type
|
|
operator() (_ArgTypes&&... __args) const
|
|
{
|
|
return __invoke(get(), _VSTD::forward<_ArgTypes>(__args)...);
|
|
}
|
|
};
|
|
|
|
template <class _Tp> struct ____is_reference_wrapper : public false_type {};
|
|
template <class _Tp> struct ____is_reference_wrapper<reference_wrapper<_Tp> > : public true_type {};
|
|
template <class _Tp> struct __is_reference_wrapper
|
|
: public ____is_reference_wrapper<typename remove_cv<_Tp>::type> {};
|
|
|
|
template <class _Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
reference_wrapper<_Tp>
|
|
ref(_Tp& __t) _NOEXCEPT
|
|
{
|
|
return reference_wrapper<_Tp>(__t);
|
|
}
|
|
|
|
template <class _Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
reference_wrapper<_Tp>
|
|
ref(reference_wrapper<_Tp> __t) _NOEXCEPT
|
|
{
|
|
return ref(__t.get());
|
|
}
|
|
|
|
template <class _Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
reference_wrapper<const _Tp>
|
|
cref(const _Tp& __t) _NOEXCEPT
|
|
{
|
|
return reference_wrapper<const _Tp>(__t);
|
|
}
|
|
|
|
template <class _Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
reference_wrapper<const _Tp>
|
|
cref(reference_wrapper<_Tp> __t) _NOEXCEPT
|
|
{
|
|
return cref(__t.get());
|
|
}
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
|
|
|
|
template <class _Tp> void ref(const _Tp&& __t) = delete;
|
|
template <class _Tp> void cref(const _Tp&& __t) = delete;
|
|
|
|
#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS
|
|
|
|
template <class _Tp> void ref(const _Tp&& __t);// = delete;
|
|
template <class _Tp> void cref(const _Tp&& __t);// = delete;
|
|
|
|
#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS
|
|
|
|
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
|
|
#endif // _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_FUNCTIONAL_BASE
|