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Remove almost everything in <__functional_base_03>

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This patch removes a large amount of duplicate code found in both
<__functional_base> and <__functional_base_03>. The only code that remains
in <__functional_base_03> is the C++03 implementation of __invoke and
__invoke_return.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@242951 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier 2015-07-22 22:23:49 +00:00
parent 9962ddfa24
commit 5b3a4593da
2 changed files with 94 additions and 377 deletions
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104
include/__functional_base
View File

@ -127,11 +127,6 @@ addressof(__unsafe_unretained _Tp& __x) _NOEXCEPT
}
#endif
#ifdef _LIBCPP_HAS_NO_VARIADICS
#include <__functional_base_03>
#else // _LIBCPP_HAS_NO_VARIADICS
// __weak_result_type
@ -314,6 +309,8 @@ struct __weak_result_type<_Rp (_Cp::*)(_A1) const volatile>
{
};
#ifndef _LIBCPP_HAS_NO_VARIADICS
// 3 or more arguments
template <class _Rp, class _A1, class _A2, class _A3, class ..._A4>
@ -358,8 +355,12 @@ struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2, _A3...) const volatile>
typedef _Rp result_type;
};
#endif // _LIBCPP_HAS_NO_VARIADICS
// __invoke
#ifndef _LIBCPP_HAS_NO_VARIADICS
// bullets 1 and 2
template <class _Fp, class _A0, class ..._Args,
@ -414,31 +415,79 @@ __invoke(_Fp&& __f, _Args&& ...__args)
{
return _VSTD::forward<_Fp>(__f)(_VSTD::forward<_Args>(__args)...);
}
template <class _Tp, class ..._Args>
struct __invoke_return
{
typedef decltype(__invoke(_VSTD::declval<_Tp>(), _VSTD::declval<_Args>()...)) type;
};
#else // _LIBCPP_HAS_NO_VARIADICS
#include <__functional_base_03>
#endif // _LIBCPP_HAS_NO_VARIADICS
template <class _Ret>
struct __invoke_void_return_wrapper
{
#ifndef _LIBCPP_HAS_NO_VARIADICS
template <class ..._Args>
static _Ret __call(_Args&&... __args)
{
static _Ret __call(_Args&&... __args) {
return __invoke(_VSTD::forward<_Args>(__args)...);
}
#else
template <class _Fn>
static _Ret __call(_Fn __f) {
return __invoke(__f);
}
template <class _Fn, class _A0>
static _Ret __call(_Fn __f, _A0& __a0) {
return __invoke(__f, __a0);
}
template <class _Fn, class _A0, class _A1>
static _Ret __call(_Fn __f, _A0& __a0, _A1& __a1) {
return __invoke(__f, __a0, __a1);
}
template <class _Fn, class _A0, class _A1, class _A2>
static _Ret __call(_Fn __f, _A0& __a0, _A1& __a1, _A2& __a2){
return __invoke(__f, __a0, __a1, __a2);
}
#endif
};
template <>
struct __invoke_void_return_wrapper<void>
{
#ifndef _LIBCPP_HAS_NO_VARIADICS
template <class ..._Args>
static void __call(_Args&&... __args)
{
static void __call(_Args&&... __args) {
__invoke(_VSTD::forward<_Args>(__args)...);
}
#else
template <class _Fn>
static void __call(_Fn __f) {
__invoke(__f);
}
template <class _Fn, class _A0>
static void __call(_Fn __f, _A0& __a0) {
__invoke(__f, __a0);
}
template <class _Fn, class _A0, class _A1>
static void __call(_Fn __f, _A0& __a0, _A1& __a1) {
__invoke(__f, __a0, __a1);
}
template <class _Fn, class _A0, class _A1, class _A2>
static void __call(_Fn __f, _A0& __a0, _A1& __a1, _A2& __a2) {
__invoke(__f, __a0, __a1, __a2);
}
#endif
};
template <class _Tp>
@ -463,6 +512,7 @@ public:
_LIBCPP_INLINE_VISIBILITY operator type& () const _NOEXCEPT {return *__f_;}
_LIBCPP_INLINE_VISIBILITY type& get() const _NOEXCEPT {return *__f_;}
#ifndef _LIBCPP_HAS_NO_VARIADICS
// invoke
template <class... _ArgTypes>
_LIBCPP_INLINE_VISIBILITY
@ -471,6 +521,39 @@ public:
{
return __invoke(get(), _VSTD::forward<_ArgTypes>(__args)...);
}
#else
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return<type>::type
operator() () const
{
return __invoke(get());
}
template <class _A0>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return0<type&, _A0>::type
operator() (_A0& __a0) const
{
return __invoke<type&, _A0>(get(), __a0);
}
template <class _A0, class _A1>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return1<type&, _A0, _A1>::type
operator() (_A0& __a0, _A1& __a1) const
{
return __invoke<type&, _A0, _A1>(get(), __a0, __a1);
}
template <class _A0, class _A1, class _A2>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return2<type&, _A0, _A1, _A2>::type
operator() (_A0& __a0, _A1& __a1, _A2& __a2) const
{
return __invoke<type&, _A0, _A1, _A2>(get(), __a0, __a1, __a2);
}
#endif // _LIBCPP_HAS_NO_VARIADICS
};
template <class _Tp> struct __is_reference_wrapper_impl : public false_type {};
@ -510,6 +593,7 @@ cref(reference_wrapper<_Tp> __t) _NOEXCEPT
return cref(__t.get());
}
#ifndef _LIBCPP_HAS_NO_VARIADICS
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS

367
include/__functional_base_03
View File

@ -13,228 +13,7 @@
// manual variadic expansion for <functional>
// __weak_result_type
template <class _Tp>
struct __derives_from_unary_function
{
private:
struct __two {char __lx; char __lxx;};
static __two __test(...);
template <class _Ap, class _Rp>
static unary_function<_Ap, _Rp>
__test(const volatile unary_function<_Ap, _Rp>*);
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 __lx; char __lxx;};
static __two __test(...);
template <class _A1, class _A2, class _Rp>
static binary_function<_A1, _A2, _Rp>
__test(const volatile binary_function<_A1, _A2, _Rp>*);
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<typename remove_reference<_Tp>::type>
{
};
// 0 argument case
template <class _Rp>
struct __weak_result_type<_Rp ()>
{
typedef _Rp result_type;
};
template <class _Rp>
struct __weak_result_type<_Rp (&)()>
{
typedef _Rp result_type;
};
template <class _Rp>
struct __weak_result_type<_Rp (*)()>
{
typedef _Rp result_type;
};
// 1 argument case
template <class _Rp, class _A1>
struct __weak_result_type<_Rp (_A1)>
: public unary_function<_A1, _Rp>
{
};
template <class _Rp, class _A1>
struct __weak_result_type<_Rp (&)(_A1)>
: public unary_function<_A1, _Rp>
{
};
template <class _Rp, class _A1>
struct __weak_result_type<_Rp (*)(_A1)>
: public unary_function<_A1, _Rp>
{
};
template <class _Rp, class _Cp>
struct __weak_result_type<_Rp (_Cp::*)()>
: public unary_function<_Cp*, _Rp>
{
};
template <class _Rp, class _Cp>
struct __weak_result_type<_Rp (_Cp::*)() const>
: public unary_function<const _Cp*, _Rp>
{
};
template <class _Rp, class _Cp>
struct __weak_result_type<_Rp (_Cp::*)() volatile>
: public unary_function<volatile _Cp*, _Rp>
{
};
template <class _Rp, class _Cp>
struct __weak_result_type<_Rp (_Cp::*)() const volatile>
: public unary_function<const volatile _Cp*, _Rp>
{
};
// 2 argument case
template <class _Rp, class _A1, class _A2>
struct __weak_result_type<_Rp (_A1, _A2)>
: public binary_function<_A1, _A2, _Rp>
{
};
template <class _Rp, class _A1, class _A2>
struct __weak_result_type<_Rp (*)(_A1, _A2)>
: public binary_function<_A1, _A2, _Rp>
{
};
template <class _Rp, class _A1, class _A2>
struct __weak_result_type<_Rp (&)(_A1, _A2)>
: public binary_function<_A1, _A2, _Rp>
{
};
template <class _Rp, class _Cp, class _A1>
struct __weak_result_type<_Rp (_Cp::*)(_A1)>
: public binary_function<_Cp*, _A1, _Rp>
{
};
template <class _Rp, class _Cp, class _A1>
struct __weak_result_type<_Rp (_Cp::*)(_A1) const>
: public binary_function<const _Cp*, _A1, _Rp>
{
};
template <class _Rp, class _Cp, class _A1>
struct __weak_result_type<_Rp (_Cp::*)(_A1) volatile>
: public binary_function<volatile _Cp*, _A1, _Rp>
{
};
template <class _Rp, class _Cp, class _A1>
struct __weak_result_type<_Rp (_Cp::*)(_A1) const volatile>
: public binary_function<const volatile _Cp*, _A1, _Rp>
{
};
// 3 or more arguments
template <class _Rp, class _A1, class _A2, class _A3>
struct __weak_result_type<_Rp (_A1, _A2, _A3)>
{
typedef _Rp result_type;
};
template <class _Rp, class _A1, class _A2, class _A3>
struct __weak_result_type<_Rp (&)(_A1, _A2, _A3)>
{
typedef _Rp result_type;
};
template <class _Rp, class _A1, class _A2, class _A3>
struct __weak_result_type<_Rp (*)(_A1, _A2, _A3)>
{
typedef _Rp result_type;
};
template <class _Rp, class _Cp, class _A1, class _A2>
struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2)>
{
typedef _Rp result_type;
};
template <class _Rp, class _Cp, class _A1, class _A2>
struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) const>
{
typedef _Rp result_type;
};
template <class _Rp, class _Cp, class _A1, class _A2>
struct __weak_result_type<_Rp (_Cp::*)(_A1, _A2) volatile>
{
typedef _Rp result_type;
};
// __invoke
// first bullet
template <class _Rp, class _Tp, class _T1>
@ -759,150 +538,4 @@ struct __invoke_return2
_VSTD::declval<_A2>())) type;
};
template <class _Ret>
struct __invoke_void_return_wrapper
{
template <class _Fn>
static _Ret __call(_Fn __f)
{
return __invoke(__f);
}
template <class _Fn, class _A0>
static _Ret __call(_Fn __f, _A0& __a0)
{
return __invoke(__f, __a0);
}
template <class _Fn, class _A0, class _A1>
static _Ret __call(_Fn __f, _A0& __a0, _A1& __a1)
{
return __invoke(__f, __a0, __a1);
}
template <class _Fn, class _A0, class _A1, class _A2>
static _Ret __call(_Fn __f, _A0& __a0, _A1& __a1, _A2& __a2)
{
return __invoke(__f, __a0, __a1, __a2);
}
};
template <>
struct __invoke_void_return_wrapper<void>
{
template <class _Fn>
static void __call(_Fn __f)
{
__invoke(__f);
}
template <class _Fn, class _A0>
static void __call(_Fn __f, _A0& __a0)
{
__invoke(__f, __a0);
}
template <class _Fn, class _A0, class _A1>
static void __call(_Fn __f, _A0& __a0, _A1& __a1)
{
__invoke(__f, __a0, __a1);
}
template <class _Fn, class _A0, class _A1, class _A2>
static void __call(_Fn __f, _A0& __a0, _A1& __a1, _A2& __a2)
{
__invoke(__f, __a0, __a1, __a2);
}
};
template <class _Tp>
class _LIBCPP_TYPE_VIS_ONLY 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) : __f_(&__f) {}
// access
_LIBCPP_INLINE_VISIBILITY operator type& () const {return *__f_;}
_LIBCPP_INLINE_VISIBILITY type& get() const {return *__f_;}
// invoke
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return<type&>::type
operator() () const
{
return __invoke(get());
}
template <class _A0>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return0<type&, _A0>::type
operator() (_A0& __a0) const
{
return __invoke<type&, _A0>(get(), __a0);
}
template <class _A0, class _A1>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return1<type&, _A0, _A1>::type
operator() (_A0& __a0, _A1& __a1) const
{
return __invoke<type&, _A0, _A1>(get(), __a0, __a1);
}
template <class _A0, class _A1, class _A2>
_LIBCPP_INLINE_VISIBILITY
typename __invoke_return2<type&, _A0, _A1, _A2>::type
operator() (_A0& __a0, _A1& __a1, _A2& __a2) const
{
return __invoke<type&, _A0, _A1, _A2>(get(), __a0, __a1, __a2);
}
};
template <class _Tp> struct __is_reference_wrapper_impl : public false_type {};
template <class _Tp> struct __is_reference_wrapper_impl<reference_wrapper<_Tp> > : public true_type {};
template <class _Tp> struct __is_reference_wrapper
: public __is_reference_wrapper_impl<typename remove_cv<_Tp>::type> {};
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<_Tp>
ref(_Tp& __t)
{
return reference_wrapper<_Tp>(__t);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<_Tp>
ref(reference_wrapper<_Tp> __t)
{
return ref(__t.get());
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<const _Tp>
cref(const _Tp& __t)
{
return reference_wrapper<const _Tp>(__t);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
reference_wrapper<const _Tp>
cref(reference_wrapper<_Tp> __t)
{
return cref(__t.get());
}
#endif // _LIBCPP_FUNCTIONAL_BASE_03