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Commit c05986b9 by Jonathan Wakely Committed by Jonathan Wakely
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Split <functional> into smaller pieces 

	* include/Makefile.am: Add <bits/refwrap.h> and <bits/std_function.h>.
	Order alphabetically.
	* include/Makefile.in: Regenerate.
	* include/bits/refwrap.h: New header.
	(_Maybe_get_result_type,_Weak_result_type_impl, _Weak_result_type)
	(_Reference_wrapper_base_impl, _Reference_wrapper_base)
	(reference_wrapper, ref, cref): Move here from <functional>.
	* include/bits/shared_ptr_base.h: Include <bits/refwrap.h> and
	<bits/stl_function.h> instead of <functional>.
	* include/bits/std_function.h: New header.
	(_Maybe_unary_or_binary_function, bad_function_call)
	(__is_location_invariant, _Nocopy_types, _Any_data)
	(_Simple_type_wrapper, _Function_base, _Function_handler, function):
	Move here from <functional>.
	* include/bits/unique_ptr.h: Include <bits/stl_function.h>.
	* include/std/functional: Include new headers and move components to
	them.
	* include/std/future: Include <bits/std_function.h> instead of
	<functional>.
	* include/std/mutex: Likewise.
	* include/std/regex: Likewise.
	* src/c++11/compatibility-thread-c++0x.cc: Include <functional>.
	* testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
	* testsuite/20_util/default_delete/void_neg.cc: Likewise.
	* testsuite/20_util/unique_ptr/assign/48635_neg.cc: Adjust dg-error
	lines.
	* testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc: Likewise.
	* testsuite/30_threads/packaged_task/49668.cc: Include <functional>.

From-SVN: r241410
parent 75a434a9
Showing with 1292 additions and 1151 deletions
libstdc++-v3/ChangeLog
2016-10-21 Jonathan Wakely <jwakely@redhat.com> 2016-10-21 Jonathan Wakely <jwakely@redhat.com>
* include/Makefile.am: Add <bits/refwrap.h> and <bits/std_function.h>.
Order alphabetically.
* include/Makefile.in: Regenerate.
* include/bits/refwrap.h: New header.
(_Maybe_get_result_type,_Weak_result_type_impl, _Weak_result_type)
(_Reference_wrapper_base_impl, _Reference_wrapper_base)
(reference_wrapper, ref, cref): Move here from <functional>.
* include/bits/shared_ptr_base.h: Include <bits/refwrap.h> and
<bits/stl_function.h> instead of <functional>.
* include/bits/std_function.h: New header.
(_Maybe_unary_or_binary_function, bad_function_call)
(__is_location_invariant, _Nocopy_types, _Any_data)
(_Simple_type_wrapper, _Function_base, _Function_handler, function):
Move here from <functional>.
* include/bits/unique_ptr.h: Include <bits/stl_function.h>.
* include/std/functional: Include new headers and move components to
them.
* include/std/future: Include <bits/std_function.h> instead of
<functional>.
* include/std/mutex: Likewise.
* include/std/regex: Likewise.
* src/c++11/compatibility-thread-c++0x.cc: Include <functional>.
* testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
* testsuite/20_util/default_delete/void_neg.cc: Likewise.
* testsuite/20_util/unique_ptr/assign/48635_neg.cc: Adjust dg-error
lines.
* testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc: Likewise.
* testsuite/30_threads/packaged_task/49668.cc: Include <functional>.
* libsupc++/exception_ptr.h (make_exception_ptr): Qualify new. * libsupc++/exception_ptr.h (make_exception_ptr): Qualify new.
* testsuite/18_support/exception_ptr/make_exception_ptr_2.cc: New * testsuite/18_support/exception_ptr/make_exception_ptr_2.cc: New
test. test.
...@@ -3582,6 +3611,7 @@ ...@@ -3582,6 +3611,7 @@
* include/std/future: Include <functional>. * include/std/future: Include <functional>.
* include/std/memory: Do not include <functional>. * include/std/memory: Do not include <functional>.
* include/std/mutex: [_GLIBCXX_HAVE_TLS]: Likewise. * include/std/mutex: [_GLIBCXX_HAVE_TLS]: Likewise.
* src/c++11/compatibility-thread-c++0x.cc: Include <functional>.
* testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
missing includes. missing includes.
* testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise. * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
......
libstdc++-v3/include/Makefile.am
...@@ -140,6 +140,7 @@ bits_headers = \ ...@@ -140,6 +140,7 @@ bits_headers = \
${bits_srcdir}/random.h \ ${bits_srcdir}/random.h \
${bits_srcdir}/random.tcc \ ${bits_srcdir}/random.tcc \
${bits_srcdir}/range_access.h \ ${bits_srcdir}/range_access.h \
${bits_srcdir}/refwrap.h \
${bits_srcdir}/regex.h \ ${bits_srcdir}/regex.h \
${bits_srcdir}/regex.tcc \ ${bits_srcdir}/regex.tcc \
${bits_srcdir}/regex_constants.h \ ${bits_srcdir}/regex_constants.h \
...@@ -152,14 +153,13 @@ bits_headers = \ ...@@ -152,14 +153,13 @@ bits_headers = \
${bits_srcdir}/regex_compiler.tcc \ ${bits_srcdir}/regex_compiler.tcc \
${bits_srcdir}/regex_executor.h \ ${bits_srcdir}/regex_executor.h \
${bits_srcdir}/regex_executor.tcc \ ${bits_srcdir}/regex_executor.tcc \
${bits_srcdir}/stream_iterator.h \
${bits_srcdir}/streambuf_iterator.h \
${bits_srcdir}/shared_ptr.h \ ${bits_srcdir}/shared_ptr.h \
${bits_srcdir}/shared_ptr_atomic.h \ ${bits_srcdir}/shared_ptr_atomic.h \
${bits_srcdir}/shared_ptr_base.h \ ${bits_srcdir}/shared_ptr_base.h \
${bits_srcdir}/slice_array.h \ ${bits_srcdir}/slice_array.h \
${bits_srcdir}/sstream.tcc \ ${bits_srcdir}/sstream.tcc \
${bits_srcdir}/std_abs.h \ ${bits_srcdir}/std_abs.h \
${bits_srcdir}/std_function.h \
${bits_srcdir}/std_mutex.h \ ${bits_srcdir}/std_mutex.h \
${bits_srcdir}/stl_algo.h \ ${bits_srcdir}/stl_algo.h \
${bits_srcdir}/stl_algobase.h \ ${bits_srcdir}/stl_algobase.h \
...@@ -186,6 +186,8 @@ bits_headers = \ ...@@ -186,6 +186,8 @@ bits_headers = \
${bits_srcdir}/stl_tree.h \ ${bits_srcdir}/stl_tree.h \
${bits_srcdir}/stl_uninitialized.h \ ${bits_srcdir}/stl_uninitialized.h \
${bits_srcdir}/stl_vector.h \ ${bits_srcdir}/stl_vector.h \
${bits_srcdir}/stream_iterator.h \
${bits_srcdir}/streambuf_iterator.h \
${bits_srcdir}/streambuf.tcc \ ${bits_srcdir}/streambuf.tcc \
${bits_srcdir}/stringfwd.h \ ${bits_srcdir}/stringfwd.h \
${bits_srcdir}/string_view.tcc \ ${bits_srcdir}/string_view.tcc \
......
libstdc++-v3/include/Makefile.in
...@@ -431,6 +431,7 @@ bits_headers = \ ...@@ -431,6 +431,7 @@ bits_headers = \
${bits_srcdir}/random.h \ ${bits_srcdir}/random.h \
${bits_srcdir}/random.tcc \ ${bits_srcdir}/random.tcc \
${bits_srcdir}/range_access.h \ ${bits_srcdir}/range_access.h \
${bits_srcdir}/refwrap.h \
${bits_srcdir}/regex.h \ ${bits_srcdir}/regex.h \
${bits_srcdir}/regex.tcc \ ${bits_srcdir}/regex.tcc \
${bits_srcdir}/regex_constants.h \ ${bits_srcdir}/regex_constants.h \
...@@ -443,14 +444,13 @@ bits_headers = \ ...@@ -443,14 +444,13 @@ bits_headers = \
${bits_srcdir}/regex_compiler.tcc \ ${bits_srcdir}/regex_compiler.tcc \
${bits_srcdir}/regex_executor.h \ ${bits_srcdir}/regex_executor.h \
${bits_srcdir}/regex_executor.tcc \ ${bits_srcdir}/regex_executor.tcc \
${bits_srcdir}/stream_iterator.h \
${bits_srcdir}/streambuf_iterator.h \
${bits_srcdir}/shared_ptr.h \ ${bits_srcdir}/shared_ptr.h \
${bits_srcdir}/shared_ptr_atomic.h \ ${bits_srcdir}/shared_ptr_atomic.h \
${bits_srcdir}/shared_ptr_base.h \ ${bits_srcdir}/shared_ptr_base.h \
${bits_srcdir}/slice_array.h \ ${bits_srcdir}/slice_array.h \
${bits_srcdir}/sstream.tcc \ ${bits_srcdir}/sstream.tcc \
${bits_srcdir}/std_abs.h \ ${bits_srcdir}/std_abs.h \
${bits_srcdir}/std_function.h \
${bits_srcdir}/std_mutex.h \ ${bits_srcdir}/std_mutex.h \
${bits_srcdir}/stl_algo.h \ ${bits_srcdir}/stl_algo.h \
${bits_srcdir}/stl_algobase.h \ ${bits_srcdir}/stl_algobase.h \
...@@ -477,6 +477,8 @@ bits_headers = \ ...@@ -477,6 +477,8 @@ bits_headers = \
${bits_srcdir}/stl_tree.h \ ${bits_srcdir}/stl_tree.h \
${bits_srcdir}/stl_uninitialized.h \ ${bits_srcdir}/stl_uninitialized.h \
${bits_srcdir}/stl_vector.h \ ${bits_srcdir}/stl_vector.h \
${bits_srcdir}/stream_iterator.h \
${bits_srcdir}/streambuf_iterator.h \
${bits_srcdir}/streambuf.tcc \ ${bits_srcdir}/streambuf.tcc \
${bits_srcdir}/stringfwd.h \ ${bits_srcdir}/stringfwd.h \
${bits_srcdir}/string_view.tcc \ ${bits_srcdir}/string_view.tcc \
......
libstdc++-v3/include/bits/refwrap.h 0 → 100644
// Implementation of std::reference_wrapper -*- C++ -*-
// Copyright (C) 2004-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file include/bits/bind.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{functional}
*/
#ifndef _GLIBCXX_REFWRAP_H
#define _GLIBCXX_REFWRAP_H 1
#pragma GCC system_header
#if __cplusplus < 201103L
# include <bits/c++0x_warning.h>
#else
#include <bits/move.h>
#include <bits/invoke.h>
#include <bits/stl_function.h> // for unary_function and binary_function
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/// If we have found a result_type, extract it.
template<typename _Functor, typename = __void_t<>>
struct _Maybe_get_result_type
{ };
template<typename _Functor>
struct _Maybe_get_result_type<_Functor,
__void_t<typename _Functor::result_type>>
{ typedef typename _Functor::result_type result_type; };
/**
* Base class for any function object that has a weak result type, as
* defined in 20.8.2 [func.require] of C++11.
*/
template<typename _Functor>
struct _Weak_result_type_impl
: _Maybe_get_result_type<_Functor>
{ };
/// Retrieve the result type for a function type.
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...) const>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......) const>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...) volatile>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......) volatile>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...) const volatile>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......) const volatile>
{ typedef _Res result_type; };
/// Retrieve the result type for a function reference.
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(&)(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(&)(_ArgTypes......)>
{ typedef _Res result_type; };
/// Retrieve the result type for a function pointer.
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(*)(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(*)(_ArgTypes......)>
{ typedef _Res result_type; };
/// Retrieve result type for a member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......)>
{ typedef _Res result_type; };
/// Retrieve result type for a const member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...) const>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......) const>
{ typedef _Res result_type; };
/// Retrieve result type for a volatile member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...) volatile>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......) volatile>
{ typedef _Res result_type; };
/// Retrieve result type for a const volatile member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...)
const volatile>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......)
const volatile>
{ typedef _Res result_type; };
/**
* Strip top-level cv-qualifiers from the function object and let
* _Weak_result_type_impl perform the real work.
*/
template<typename _Functor>
struct _Weak_result_type
: _Weak_result_type_impl<typename remove_cv<_Functor>::type>
{ };
// Detect nested argument_type.
template<typename _Tp, typename = __void_t<>>
struct _Refwrap_base_arg1
{ };
// Nested argument_type.
template<typename _Tp>
struct _Refwrap_base_arg1<_Tp,
__void_t<typename _Tp::argument_type>>
{
typedef typename _Tp::argument_type argument_type;
};
// Detect nested first_argument_type and second_argument_type.
template<typename _Tp, typename = __void_t<>>
struct _Refwrap_base_arg2
{ };
// Nested first_argument_type and second_argument_type.
template<typename _Tp>
struct _Refwrap_base_arg2<_Tp,
__void_t<typename _Tp::first_argument_type,
typename _Tp::second_argument_type>>
{
typedef typename _Tp::first_argument_type first_argument_type;
typedef typename _Tp::second_argument_type second_argument_type;
};
/**
* Derives from unary_function or binary_function when it
* can. Specializations handle all of the easy cases. The primary
* template determines what to do with a class type, which may
* derive from both unary_function and binary_function.
*/
template<typename _Tp>
struct _Reference_wrapper_base
: _Weak_result_type<_Tp>, _Refwrap_base_arg1<_Tp>, _Refwrap_base_arg2<_Tp>
{ };
// - a function type (unary)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1)>
: unary_function<_T1, _Res>
{ };
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1) const>
: unary_function<_T1, _Res>
{ };
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1) volatile>
: unary_function<_T1, _Res>
{ };
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1) const volatile>
: unary_function<_T1, _Res>
{ };
// - a function type (binary)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2)>
: binary_function<_T1, _T2, _Res>
{ };
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2) const>
: binary_function<_T1, _T2, _Res>
{ };
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2) volatile>
: binary_function<_T1, _T2, _Res>
{ };
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2) const volatile>
: binary_function<_T1, _T2, _Res>
{ };
// - a function pointer type (unary)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(*)(_T1)>
: unary_function<_T1, _Res>
{ };
// - a function pointer type (binary)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(*)(_T1, _T2)>
: binary_function<_T1, _T2, _Res>
{ };
// - a pointer to member function type (unary, no qualifiers)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)()>
: unary_function<_T1*, _Res>
{ };
// - a pointer to member function type (binary, no qualifiers)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2)>
: binary_function<_T1*, _T2, _Res>
{ };
// - a pointer to member function type (unary, const)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)() const>
: unary_function<const _T1*, _Res>
{ };
// - a pointer to member function type (binary, const)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2) const>
: binary_function<const _T1*, _T2, _Res>
{ };
// - a pointer to member function type (unary, volatile)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)() volatile>
: unary_function<volatile _T1*, _Res>
{ };
// - a pointer to member function type (binary, volatile)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2) volatile>
: binary_function<volatile _T1*, _T2, _Res>
{ };
// - a pointer to member function type (unary, const volatile)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)() const volatile>
: unary_function<const volatile _T1*, _Res>
{ };
// - a pointer to member function type (binary, const volatile)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2) const volatile>
: binary_function<const volatile _T1*, _T2, _Res>
{ };
/**
* @brief Primary class template for reference_wrapper.
* @ingroup functors
* @{
*/
template<typename _Tp>
class reference_wrapper
: public _Reference_wrapper_base<typename remove_cv<_Tp>::type>
{
_Tp* _M_data;
public:
typedef _Tp type;
reference_wrapper(_Tp& __indata) noexcept
: _M_data(std::__addressof(__indata))
{ }
reference_wrapper(_Tp&&) = delete;
reference_wrapper(const reference_wrapper&) = default;
reference_wrapper&
operator=(const reference_wrapper&) = default;
operator _Tp&() const noexcept
{ return this->get(); }
_Tp&
get() const noexcept
{ return *_M_data; }
template<typename... _Args>
typename result_of<_Tp&(_Args&&...)>::type
operator()(_Args&&... __args) const
{
return std::__invoke(get(), std::forward<_Args>(__args)...);
}
};
/// Denotes a reference should be taken to a variable.
template<typename _Tp>
inline reference_wrapper<_Tp>
ref(_Tp& __t) noexcept
{ return reference_wrapper<_Tp>(__t); }
/// Denotes a const reference should be taken to a variable.
template<typename _Tp>
inline reference_wrapper<const _Tp>
cref(const _Tp& __t) noexcept
{ return reference_wrapper<const _Tp>(__t); }
template<typename _Tp>
void ref(const _Tp&&) = delete;
template<typename _Tp>
void cref(const _Tp&&) = delete;
/// Partial specialization.
template<typename _Tp>
inline reference_wrapper<_Tp>
ref(reference_wrapper<_Tp> __t) noexcept
{ return ref(__t.get()); }
/// Partial specialization.
template<typename _Tp>
inline reference_wrapper<const _Tp>
cref(reference_wrapper<_Tp> __t) noexcept
{ return cref(__t.get()); }
// @} group functors
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++11
#endif // _GLIBCXX_REFWRAP_H
libstdc++-v3/include/bits/shared_ptr_base.h
...@@ -49,11 +49,12 @@ ...@@ -49,11 +49,12 @@
#ifndef _SHARED_PTR_BASE_H #ifndef _SHARED_PTR_BASE_H
#define _SHARED_PTR_BASE_H 1 #define _SHARED_PTR_BASE_H 1
#include <functional>
#if __cpp_rtti #if __cpp_rtti
# include <typeinfo> # include <typeinfo>
#endif #endif
#include <bits/allocated_ptr.h> #include <bits/allocated_ptr.h>
#include <bits/refwrap.h>
#include <bits/stl_function.h>
#include <ext/aligned_buffer.h> #include <ext/aligned_buffer.h>
namespace std _GLIBCXX_VISIBILITY(default) namespace std _GLIBCXX_VISIBILITY(default)
......
libstdc++-v3/include/bits/std_function.h 0 → 100644
// Implementation of std::function -*- C++ -*-
// Copyright (C) 2004-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file include/bits/function.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{functional}
*/
#ifndef _GLIBCXX_STD_FUNCTION_H
#define _GLIBCXX_STD_FUNCTION_H 1
#pragma GCC system_header
#if __cplusplus < 201103L
# include <bits/c++0x_warning.h>
#else
#if __cpp_rtti
# include <typeinfo>
#endif
#include <bits/stl_function.h>
#include <bits/invoke.h>
#include <bits/refwrap.h>
#include <bits/functexcept.h>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
* Derives from @c unary_function or @c binary_function, or perhaps
* nothing, depending on the number of arguments provided. The
* primary template is the basis case, which derives nothing.
*/
template<typename _Res, typename... _ArgTypes>
struct _Maybe_unary_or_binary_function { };
/// Derives from @c unary_function, as appropriate.
template<typename _Res, typename _T1>
struct _Maybe_unary_or_binary_function<_Res, _T1>
: std::unary_function<_T1, _Res> { };
/// Derives from @c binary_function, as appropriate.
template<typename _Res, typename _T1, typename _T2>
struct _Maybe_unary_or_binary_function<_Res, _T1, _T2>
: std::binary_function<_T1, _T2, _Res> { };
/**
* @brief Exception class thrown when class template function's
* operator() is called with an empty target.
* @ingroup exceptions
*/
class bad_function_call : public std::exception
{
public:
virtual ~bad_function_call() noexcept;
const char* what() const noexcept;
};
/**
* Trait identifying "location-invariant" types, meaning that the
* address of the object (or any of its members) will not escape.
* Trivially copyable types are location-invariant and users can
* specialize this trait for other types.
*/
template<typename _Tp>
struct __is_location_invariant
: is_trivially_copyable<_Tp>::type
{ };
class _Undefined_class;
union _Nocopy_types
{
void* _M_object;
const void* _M_const_object;
void (*_M_function_pointer)();
void (_Undefined_class::*_M_member_pointer)();
};
union [[gnu::may_alias]] _Any_data
{
void* _M_access() { return &_M_pod_data[0]; }
const void* _M_access() const { return &_M_pod_data[0]; }
template<typename _Tp>
_Tp&
_M_access()
{ return *static_cast<_Tp*>(_M_access()); }
template<typename _Tp>
const _Tp&
_M_access() const
{ return *static_cast<const _Tp*>(_M_access()); }
_Nocopy_types _M_unused;
char _M_pod_data[sizeof(_Nocopy_types)];
};
enum _Manager_operation
{
__get_type_info,
__get_functor_ptr,
__clone_functor,
__destroy_functor
};
// Simple type wrapper that helps avoid annoying const problems
// when casting between void pointers and pointers-to-pointers.
template<typename _Tp>
struct _Simple_type_wrapper
{
_Simple_type_wrapper(_Tp __value) : __value(__value) { }
_Tp __value;
};
template<typename _Tp>
struct __is_location_invariant<_Simple_type_wrapper<_Tp> >
: __is_location_invariant<_Tp>
{ };
template<typename _Signature>
class function;
/// Base class of all polymorphic function object wrappers.
class _Function_base
{
public:
static const std::size_t _M_max_size = sizeof(_Nocopy_types);
static const std::size_t _M_max_align = __alignof__(_Nocopy_types);
template<typename _Functor>
class _Base_manager
{
protected:
static const bool __stored_locally =
(__is_location_invariant<_Functor>::value
&& sizeof(_Functor) <= _M_max_size
&& __alignof__(_Functor) <= _M_max_align
&& (_M_max_align % __alignof__(_Functor) == 0));
typedef integral_constant<bool, __stored_locally> _Local_storage;
// Retrieve a pointer to the function object
static _Functor*
_M_get_pointer(const _Any_data& __source)
{
const _Functor* __ptr =
__stored_locally? std::__addressof(__source._M_access<_Functor>())
/* have stored a pointer */ : __source._M_access<_Functor*>();
return const_cast<_Functor*>(__ptr);
}
// Clone a location-invariant function object that fits within
// an _Any_data structure.
static void
_M_clone(_Any_data& __dest, const _Any_data& __source, true_type)
{
::new (__dest._M_access()) _Functor(__source._M_access<_Functor>());
}
// Clone a function object that is not location-invariant or
// that cannot fit into an _Any_data structure.
static void
_M_clone(_Any_data& __dest, const _Any_data& __source, false_type)
{
__dest._M_access<_Functor*>() =
new _Functor(*__source._M_access<_Functor*>());
}
// Destroying a location-invariant object may still require
// destruction.
static void
_M_destroy(_Any_data& __victim, true_type)
{
__victim._M_access<_Functor>().~_Functor();
}
// Destroying an object located on the heap.
static void
_M_destroy(_Any_data& __victim, false_type)
{
delete __victim._M_access<_Functor*>();
}
public:
static bool
_M_manager(_Any_data& __dest, const _Any_data& __source,
_Manager_operation __op)
{
switch (__op)
{
#if __cpp_rtti
case __get_type_info:
__dest._M_access<const type_info*>() = &typeid(_Functor);
break;
#endif
case __get_functor_ptr:
__dest._M_access<_Functor*>() = _M_get_pointer(__source);
break;
case __clone_functor:
_M_clone(__dest, __source, _Local_storage());
break;
case __destroy_functor:
_M_destroy(__dest, _Local_storage());
break;
}
return false;
}
static void
_M_init_functor(_Any_data& __functor, _Functor&& __f)
{ _M_init_functor(__functor, std::move(__f), _Local_storage()); }
template<typename _Signature>
static bool
_M_not_empty_function(const function<_Signature>& __f)
{ return static_cast<bool>(__f); }
template<typename _Tp>
static bool
_M_not_empty_function(_Tp* __fp)
{ return __fp != nullptr; }
template<typename _Class, typename _Tp>
static bool
_M_not_empty_function(_Tp _Class::* __mp)
{ return __mp != nullptr; }
template<typename _Tp>
static bool
_M_not_empty_function(const _Tp&)
{ return true; }
private:
static void
_M_init_functor(_Any_data& __functor, _Functor&& __f, true_type)
{ ::new (__functor._M_access()) _Functor(std::move(__f)); }
static void
_M_init_functor(_Any_data& __functor, _Functor&& __f, false_type)
{ __functor._M_access<_Functor*>() = new _Functor(std::move(__f)); }
};
template<typename _Functor>
class _Ref_manager : public _Base_manager<_Functor*>
{
typedef _Function_base::_Base_manager<_Functor*> _Base;
public:
static bool
_M_manager(_Any_data& __dest, const _Any_data& __source,
_Manager_operation __op)
{
switch (__op)
{
#if __cpp_rtti
case __get_type_info:
__dest._M_access<const type_info*>() = &typeid(_Functor);
break;
#endif
case __get_functor_ptr:
__dest._M_access<_Functor*>() = *_Base::_M_get_pointer(__source);
return is_const<_Functor>::value;
break;
default:
_Base::_M_manager(__dest, __source, __op);
}
return false;
}
static void
_M_init_functor(_Any_data& __functor, reference_wrapper<_Functor> __f)
{
_Base::_M_init_functor(__functor, std::__addressof(__f.get()));
}
};
_Function_base() : _M_manager(nullptr) { }
~_Function_base()
{
if (_M_manager)
_M_manager(_M_functor, _M_functor, __destroy_functor);
}
bool _M_empty() const { return !_M_manager; }
typedef bool (*_Manager_type)(_Any_data&, const _Any_data&,
_Manager_operation);
_Any_data _M_functor;
_Manager_type _M_manager;
};
template<typename _Signature, typename _Functor>
class _Function_handler;
template<typename _Res, typename _Functor, typename... _ArgTypes>
class _Function_handler<_Res(_ArgTypes...), _Functor>
: public _Function_base::_Base_manager<_Functor>
{
typedef _Function_base::_Base_manager<_Functor> _Base;
public:
static _Res
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
return (*_Base::_M_get_pointer(__functor))(
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Functor, typename... _ArgTypes>
class _Function_handler<void(_ArgTypes...), _Functor>
: public _Function_base::_Base_manager<_Functor>
{
typedef _Function_base::_Base_manager<_Functor> _Base;
public:
static void
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
(*_Base::_M_get_pointer(__functor))(
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Res, typename _Functor, typename... _ArgTypes>
class _Function_handler<_Res(_ArgTypes...), reference_wrapper<_Functor> >
: public _Function_base::_Ref_manager<_Functor>
{
typedef _Function_base::_Ref_manager<_Functor> _Base;
public:
static _Res
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
return std::__invoke(**_Base::_M_get_pointer(__functor),
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Functor, typename... _ArgTypes>
class _Function_handler<void(_ArgTypes...), reference_wrapper<_Functor> >
: public _Function_base::_Ref_manager<_Functor>
{
typedef _Function_base::_Ref_manager<_Functor> _Base;
public:
static void
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
std::__invoke(**_Base::_M_get_pointer(__functor),
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Class, typename _Member, typename _Res,
typename... _ArgTypes>
class _Function_handler<_Res(_ArgTypes...), _Member _Class::*>
: public _Function_handler<void(_ArgTypes...), _Member _Class::*>
{
typedef _Function_handler<void(_ArgTypes...), _Member _Class::*>
_Base;
public:
static _Res
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
return std::__invoke(_Base::_M_get_pointer(__functor)->__value,
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Class, typename _Member, typename... _ArgTypes>
class _Function_handler<void(_ArgTypes...), _Member _Class::*>
: public _Function_base::_Base_manager<
_Simple_type_wrapper< _Member _Class::* > >
{
typedef _Member _Class::* _Functor;
typedef _Simple_type_wrapper<_Functor> _Wrapper;
typedef _Function_base::_Base_manager<_Wrapper> _Base;
public:
static bool
_M_manager(_Any_data& __dest, const _Any_data& __source,
_Manager_operation __op)
{
switch (__op)
{
#if __cpp_rtti
case __get_type_info:
__dest._M_access<const type_info*>() = &typeid(_Functor);
break;
#endif
case __get_functor_ptr:
__dest._M_access<_Functor*>() =
&_Base::_M_get_pointer(__source)->__value;
break;
default:
_Base::_M_manager(__dest, __source, __op);
}
return false;
}
static void
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
std::__invoke(_Base::_M_get_pointer(__functor)->__value,
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _From, typename _To>
using __check_func_return_type
= __or_<is_void<_To>, is_same<_From, _To>, is_convertible<_From, _To>>;
/**
* @brief Primary class template for std::function.
* @ingroup functors
*
* Polymorphic function wrapper.
*/
template<typename _Res, typename... _ArgTypes>
class function<_Res(_ArgTypes...)>
: public _Maybe_unary_or_binary_function<_Res, _ArgTypes...>,
private _Function_base
{
typedef _Res _Signature_type(_ArgTypes...);
template<typename _Func,
typename _Res2 = typename result_of<_Func&(_ArgTypes...)>::type>
struct _Callable : __check_func_return_type<_Res2, _Res> { };
// Used so the return type convertibility checks aren't done when
// performing overload resolution for copy construction/assignment.
template<typename _Tp>
struct _Callable<function, _Tp> : false_type { };
template<typename _Cond, typename _Tp>
using _Requires = typename enable_if<_Cond::value, _Tp>::type;
public:
typedef _Res result_type;
// [3.7.2.1] construct/copy/destroy
/**
* @brief Default construct creates an empty function call wrapper.
* @post @c !(bool)*this
*/
function() noexcept
: _Function_base() { }
/**
* @brief Creates an empty function call wrapper.
* @post @c !(bool)*this
*/
function(nullptr_t) noexcept
: _Function_base() { }
/**
* @brief %Function copy constructor.
* @param __x A %function object with identical call signature.
* @post @c bool(*this) == bool(__x)
*
* The newly-created %function contains a copy of the target of @a
* __x (if it has one).
*/
function(const function& __x);
/**
* @brief %Function move constructor.
* @param __x A %function object rvalue with identical call signature.
*
* The newly-created %function contains the target of @a __x
* (if it has one).
*/
function(function&& __x) : _Function_base()
{
__x.swap(*this);
}
/**
* @brief Builds a %function that targets a copy of the incoming
* function object.
* @param __f A %function object that is callable with parameters of
* type @c T1, @c T2, ..., @c TN and returns a value convertible
* to @c Res.
*
* The newly-created %function object will target a copy of
* @a __f. If @a __f is @c reference_wrapper<F>, then this function
* object will contain a reference to the function object @c
* __f.get(). If @a __f is a NULL function pointer or NULL
* pointer-to-member, the newly-created object will be empty.
*
* If @a __f is a non-NULL function pointer or an object of type @c
* reference_wrapper<F>, this function will not throw.
*/
template<typename _Functor,
typename = _Requires<__not_<is_same<_Functor, function>>, void>,
typename = _Requires<_Callable<_Functor>, void>>
function(_Functor);
/**
* @brief %Function assignment operator.
* @param __x A %function with identical call signature.
* @post @c (bool)*this == (bool)x
* @returns @c *this
*
* The target of @a __x is copied to @c *this. If @a __x has no
* target, then @c *this will be empty.
*
* If @a __x targets a function pointer or a reference to a function
* object, then this operation will not throw an %exception.
*/
function&
operator=(const function& __x)
{
function(__x).swap(*this);
return *this;
}
/**
* @brief %Function move-assignment operator.
* @param __x A %function rvalue with identical call signature.
* @returns @c *this
*
* The target of @a __x is moved to @c *this. If @a __x has no
* target, then @c *this will be empty.
*
* If @a __x targets a function pointer or a reference to a function
* object, then this operation will not throw an %exception.
*/
function&
operator=(function&& __x)
{
function(std::move(__x)).swap(*this);
return *this;
}
/**
* @brief %Function assignment to zero.
* @post @c !(bool)*this
* @returns @c *this
*
* The target of @c *this is deallocated, leaving it empty.
*/
function&
operator=(nullptr_t) noexcept
{
if (_M_manager)
{
_M_manager(_M_functor, _M_functor, __destroy_functor);
_M_manager = nullptr;
_M_invoker = nullptr;
}
return *this;
}
/**
* @brief %Function assignment to a new target.
* @param __f A %function object that is callable with parameters of
* type @c T1, @c T2, ..., @c TN and returns a value convertible
* to @c Res.
* @return @c *this
*
* This %function object wrapper will target a copy of @a
* __f. If @a __f is @c reference_wrapper<F>, then this function
* object will contain a reference to the function object @c
* __f.get(). If @a __f is a NULL function pointer or NULL
* pointer-to-member, @c this object will be empty.
*
* If @a __f is a non-NULL function pointer or an object of type @c
* reference_wrapper<F>, this function will not throw.
*/
template<typename _Functor>
_Requires<_Callable<typename decay<_Functor>::type>, function&>
operator=(_Functor&& __f)
{
function(std::forward<_Functor>(__f)).swap(*this);
return *this;
}
/// @overload
template<typename _Functor>
function&
operator=(reference_wrapper<_Functor> __f) noexcept
{
function(__f).swap(*this);
return *this;
}
// [3.7.2.2] function modifiers
/**
* @brief Swap the targets of two %function objects.
* @param __x A %function with identical call signature.
*
* Swap the targets of @c this function object and @a __f. This
* function will not throw an %exception.
*/
void swap(function& __x) noexcept
{
std::swap(_M_functor, __x._M_functor);
std::swap(_M_manager, __x._M_manager);
std::swap(_M_invoker, __x._M_invoker);
}
// [3.7.2.3] function capacity
/**
* @brief Determine if the %function wrapper has a target.
*
* @return @c true when this %function object contains a target,
* or @c false when it is empty.
*
* This function will not throw an %exception.
*/
explicit operator bool() const noexcept
{ return !_M_empty(); }
// [3.7.2.4] function invocation
/**
* @brief Invokes the function targeted by @c *this.
* @returns the result of the target.
* @throws bad_function_call when @c !(bool)*this
*
* The function call operator invokes the target function object
* stored by @c this.
*/
_Res operator()(_ArgTypes... __args) const;
#if __cpp_rtti
// [3.7.2.5] function target access
/**
* @brief Determine the type of the target of this function object
* wrapper.
*
* @returns the type identifier of the target function object, or
* @c typeid(void) if @c !(bool)*this.
*
* This function will not throw an %exception.
*/
const type_info& target_type() const noexcept;
/**
* @brief Access the stored target function object.
*
* @return Returns a pointer to the stored target function object,
* if @c typeid(Functor).equals(target_type()); otherwise, a NULL
* pointer.
*
* This function will not throw an %exception.
*/
template<typename _Functor> _Functor* target() noexcept;
/// @overload
template<typename _Functor> const _Functor* target() const noexcept;
#endif
private:
using _Invoker_type = _Res (*)(const _Any_data&, _ArgTypes&&...);
_Invoker_type _M_invoker;
};
// Out-of-line member definitions.
template<typename _Res, typename... _ArgTypes>
function<_Res(_ArgTypes...)>::
function(const function& __x)
: _Function_base()
{
if (static_cast<bool>(__x))
{
__x._M_manager(_M_functor, __x._M_functor, __clone_functor);
_M_invoker = __x._M_invoker;
_M_manager = __x._M_manager;
}
}
template<typename _Res, typename... _ArgTypes>
template<typename _Functor, typename, typename>
function<_Res(_ArgTypes...)>::
function(_Functor __f)
: _Function_base()
{
typedef _Function_handler<_Signature_type, _Functor> _My_handler;
if (_My_handler::_M_not_empty_function(__f))
{
_My_handler::_M_init_functor(_M_functor, std::move(__f));
_M_invoker = &_My_handler::_M_invoke;
_M_manager = &_My_handler::_M_manager;
}
}
template<typename _Res, typename... _ArgTypes>
_Res
function<_Res(_ArgTypes...)>::
operator()(_ArgTypes... __args) const
{
if (_M_empty())
__throw_bad_function_call();
return _M_invoker(_M_functor, std::forward<_ArgTypes>(__args)...);
}
#if __cpp_rtti
template<typename _Res, typename... _ArgTypes>
const type_info&
function<_Res(_ArgTypes...)>::
target_type() const noexcept
{
if (_M_manager)
{
_Any_data __typeinfo_result;
_M_manager(__typeinfo_result, _M_functor, __get_type_info);
return *__typeinfo_result._M_access<const type_info*>();
}
else
return typeid(void);
}
template<typename _Res, typename... _ArgTypes>
template<typename _Functor>
_Functor*
function<_Res(_ArgTypes...)>::
target() noexcept
{
if (typeid(_Functor) == target_type() && _M_manager)
{
_Any_data __ptr;
if (_M_manager(__ptr, _M_functor, __get_functor_ptr)
&& !is_const<_Functor>::value)
return 0;
else
return __ptr._M_access<_Functor*>();
}
else
return 0;
}
template<typename _Res, typename... _ArgTypes>
template<typename _Functor>
const _Functor*
function<_Res(_ArgTypes...)>::
target() const noexcept
{
if (typeid(_Functor) == target_type() && _M_manager)
{
_Any_data __ptr;
_M_manager(__ptr, _M_functor, __get_functor_ptr);
return __ptr._M_access<const _Functor*>();
}
else
return 0;
}
#endif
// [20.7.15.2.6] null pointer comparisons
/**
* @brief Compares a polymorphic function object wrapper against 0
* (the NULL pointer).
* @returns @c true if the wrapper has no target, @c false otherwise
*
* This function will not throw an %exception.
*/
template<typename _Res, typename... _Args>
inline bool
operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
{ return !static_cast<bool>(__f); }
/// @overload
template<typename _Res, typename... _Args>
inline bool
operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
{ return !static_cast<bool>(__f); }
/**
* @brief Compares a polymorphic function object wrapper against 0
* (the NULL pointer).
* @returns @c false if the wrapper has no target, @c true otherwise
*
* This function will not throw an %exception.
*/
template<typename _Res, typename... _Args>
inline bool
operator!=(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
{ return static_cast<bool>(__f); }
/// @overload
template<typename _Res, typename... _Args>
inline bool
operator!=(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
{ return static_cast<bool>(__f); }
// [20.7.15.2.7] specialized algorithms
/**
* @brief Swap the targets of two polymorphic function object wrappers.
*
* This function will not throw an %exception.
*/
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 2062. Effect contradictions w/o no-throw guarantee of std::function swaps
template<typename _Res, typename... _Args>
inline void
swap(function<_Res(_Args...)>& __x, function<_Res(_Args...)>& __y) noexcept
{ __x.swap(__y); }
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++11
#endif // _GLIBCXX_STD_FUNCTION_H
libstdc++-v3/include/bits/unique_ptr.h
...@@ -35,6 +35,7 @@ ...@@ -35,6 +35,7 @@
#include <type_traits> #include <type_traits>
#include <utility> #include <utility>
#include <tuple> #include <tuple>
#include <bits/stl_function.h>
namespace std _GLIBCXX_VISIBILITY(default) namespace std _GLIBCXX_VISIBILITY(default)
{ {
......
libstdc++-v3/include/std/functional
...@@ -50,149 +50,24 @@ ...@@ -50,149 +50,24 @@
#if __cplusplus >= 201103L #if __cplusplus >= 201103L
#include <typeinfo>
#include <new> #include <new>
#include <tuple> #include <tuple>
#include <type_traits> #include <type_traits>
#include <bits/functexcept.h>
#include <bits/functional_hash.h> #include <bits/functional_hash.h>
#include <bits/invoke.h> #include <bits/invoke.h>
#include <bits/std_function.h>
#if __cplusplus > 201402L #if __cplusplus > 201402L
#include <unordered_map> # include <unordered_map>
#include <vector> # include <vector>
#include <array> # include <array>
#include <utility> # include <utility>
#include <bits/stl_algo.h> # include <bits/stl_algo.h>
#endif #endif
namespace std _GLIBCXX_VISIBILITY(default) namespace std _GLIBCXX_VISIBILITY(default)
{ {
_GLIBCXX_BEGIN_NAMESPACE_VERSION _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _MemberPointer>
class _Mem_fn;
template<typename _Tp, typename _Class>
_Mem_fn<_Tp _Class::*>
mem_fn(_Tp _Class::*) noexcept;
/// If we have found a result_type, extract it.
template<typename _Functor, typename = __void_t<>>
struct _Maybe_get_result_type
{ };
template<typename _Functor>
struct _Maybe_get_result_type<_Functor,
__void_t<typename _Functor::result_type>>
{ typedef typename _Functor::result_type result_type; };
/**
* Base class for any function object that has a weak result type, as
* defined in 20.8.2 [func.require] of C++11.
*/
template<typename _Functor>
struct _Weak_result_type_impl
: _Maybe_get_result_type<_Functor>
{ };
/// Retrieve the result type for a function type.
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...) const>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......) const>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...) volatile>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......) volatile>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes...) const volatile>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(_ArgTypes......) const volatile>
{ typedef _Res result_type; };
/// Retrieve the result type for a function reference.
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(&)(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(&)(_ArgTypes......)>
{ typedef _Res result_type; };
/// Retrieve the result type for a function pointer.
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(*)(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res(*)(_ArgTypes......)>
{ typedef _Res result_type; };
/// Retrieve result type for a member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...)>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......)>
{ typedef _Res result_type; };
/// Retrieve result type for a const member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...) const>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......) const>
{ typedef _Res result_type; };
/// Retrieve result type for a volatile member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...) volatile>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......) volatile>
{ typedef _Res result_type; };
/// Retrieve result type for a const volatile member function pointer.
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes...)
const volatile>
{ typedef _Res result_type; };
template<typename _Res, typename _Class, typename... _ArgTypes>
struct _Weak_result_type_impl<_Res (_Class::*)(_ArgTypes......)
const volatile>
{ typedef _Res result_type; };
/**
* Strip top-level cv-qualifiers from the function object and let
* _Weak_result_type_impl perform the real work.
*/
template<typename _Functor>
struct _Weak_result_type
: _Weak_result_type_impl<typename remove_cv<_Functor>::type>
{ };
#if __cplusplus > 201402L #if __cplusplus > 201402L
# define __cpp_lib_invoke 201411 # define __cpp_lib_invoke 201411
...@@ -207,220 +82,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION ...@@ -207,220 +82,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
} }
#endif #endif
// Detect nested argument_type.
template<typename _Tp, typename = __void_t<>>
struct _Refwrap_base_arg1
{ };
// Nested argument_type.
template<typename _Tp>
struct _Refwrap_base_arg1<_Tp,
__void_t<typename _Tp::argument_type>>
{
typedef typename _Tp::argument_type argument_type;
};
// Detect nested first_argument_type and second_argument_type.
template<typename _Tp, typename = __void_t<>>
struct _Refwrap_base_arg2
{ };
// Nested first_argument_type and second_argument_type.
template<typename _Tp>
struct _Refwrap_base_arg2<_Tp,
__void_t<typename _Tp::first_argument_type,
typename _Tp::second_argument_type>>
{
typedef typename _Tp::first_argument_type first_argument_type;
typedef typename _Tp::second_argument_type second_argument_type;
};
/**
* Derives from unary_function or binary_function when it
* can. Specializations handle all of the easy cases. The primary
* template determines what to do with a class type, which may
* derive from both unary_function and binary_function.
*/
template<typename _Tp>
struct _Reference_wrapper_base
: _Weak_result_type<_Tp>, _Refwrap_base_arg1<_Tp>, _Refwrap_base_arg2<_Tp>
{ };
// - a function type (unary)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1)>
: unary_function<_T1, _Res>
{ };
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1) const>
: unary_function<_T1, _Res>
{ };
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1) volatile>
: unary_function<_T1, _Res>
{ };
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(_T1) const volatile>
: unary_function<_T1, _Res>
{ };
// - a function type (binary)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2)>
: binary_function<_T1, _T2, _Res>
{ };
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2) const>
: binary_function<_T1, _T2, _Res>
{ };
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2) volatile>
: binary_function<_T1, _T2, _Res>
{ };
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(_T1, _T2) const volatile>
: binary_function<_T1, _T2, _Res>
{ };
// - a function pointer type (unary)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res(*)(_T1)>
: unary_function<_T1, _Res>
{ };
// - a function pointer type (binary)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res(*)(_T1, _T2)>
: binary_function<_T1, _T2, _Res>
{ };
// - a pointer to member function type (unary, no qualifiers)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)()>
: unary_function<_T1*, _Res>
{ };
// - a pointer to member function type (binary, no qualifiers)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2)>
: binary_function<_T1*, _T2, _Res>
{ };
// - a pointer to member function type (unary, const)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)() const>
: unary_function<const _T1*, _Res>
{ };
// - a pointer to member function type (binary, const)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2) const>
: binary_function<const _T1*, _T2, _Res>
{ };
// - a pointer to member function type (unary, volatile)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)() volatile>
: unary_function<volatile _T1*, _Res>
{ };
// - a pointer to member function type (binary, volatile)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2) volatile>
: binary_function<volatile _T1*, _T2, _Res>
{ };
// - a pointer to member function type (unary, const volatile)
template<typename _Res, typename _T1>
struct _Reference_wrapper_base<_Res (_T1::*)() const volatile>
: unary_function<const volatile _T1*, _Res>
{ };
// - a pointer to member function type (binary, const volatile)
template<typename _Res, typename _T1, typename _T2>
struct _Reference_wrapper_base<_Res (_T1::*)(_T2) const volatile>
: binary_function<const volatile _T1*, _T2, _Res>
{ };
/**
* @brief Primary class template for reference_wrapper.
* @ingroup functors
* @{
*/
template<typename _Tp>
class reference_wrapper
: public _Reference_wrapper_base<typename remove_cv<_Tp>::type>
{
_Tp* _M_data;
public:
typedef _Tp type;
reference_wrapper(_Tp& __indata) noexcept
: _M_data(std::__addressof(__indata))
{ }
reference_wrapper(_Tp&&) = delete;
reference_wrapper(const reference_wrapper&) = default;
reference_wrapper&
operator=(const reference_wrapper&) = default;
operator _Tp&() const noexcept
{ return this->get(); }
_Tp&
get() const noexcept
{ return *_M_data; }
template<typename... _Args>
typename result_of<_Tp&(_Args&&...)>::type
operator()(_Args&&... __args) const
{
return std::__invoke(get(), std::forward<_Args>(__args)...);
}
};
/// Denotes a reference should be taken to a variable.
template<typename _Tp>
inline reference_wrapper<_Tp>
ref(_Tp& __t) noexcept
{ return reference_wrapper<_Tp>(__t); }
/// Denotes a const reference should be taken to a variable.
template<typename _Tp>
inline reference_wrapper<const _Tp>
cref(const _Tp& __t) noexcept
{ return reference_wrapper<const _Tp>(__t); }
template<typename _Tp>
void ref(const _Tp&&) = delete;
template<typename _Tp>
void cref(const _Tp&&) = delete;
/// Partial specialization.
template<typename _Tp>
inline reference_wrapper<_Tp>
ref(reference_wrapper<_Tp> __t) noexcept
{ return ref(__t.get()); }
/// Partial specialization.
template<typename _Tp>
inline reference_wrapper<const _Tp>
cref(reference_wrapper<_Tp> __t) noexcept
{ return cref(__t.get()); }
// @} group functors
template<typename... _Types> template<typename... _Types>
struct _Pack : integral_constant<size_t, sizeof...(_Types)> struct _Pack : integral_constant<size_t, sizeof...(_Types)>
{ }; { };
...@@ -438,24 +99,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION ...@@ -438,24 +99,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using _NotSame = __not_<is_same<typename std::decay<_Tp1>::type, using _NotSame = __not_<is_same<typename std::decay<_Tp1>::type,
typename std::decay<_Tp2>::type>>; typename std::decay<_Tp2>::type>>;
/**
* Derives from @c unary_function or @c binary_function, or perhaps
* nothing, depending on the number of arguments provided. The
* primary template is the basis case, which derives nothing.
*/
template<typename _Res, typename... _ArgTypes>
struct _Maybe_unary_or_binary_function { };
/// Derives from @c unary_function, as appropriate.
template<typename _Res, typename _T1>
struct _Maybe_unary_or_binary_function<_Res, _T1>
: std::unary_function<_T1, _Res> { };
/// Derives from @c binary_function, as appropriate.
template<typename _Res, typename _T1, typename _T2>
struct _Maybe_unary_or_binary_function<_Res, _T1, _T2>
: std::binary_function<_T1, _T2, _Res> { };
template<typename _Signature> template<typename _Signature>
struct _Mem_fn_traits; struct _Mem_fn_traits;
...@@ -550,6 +193,9 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type) ...@@ -550,6 +193,9 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type)
{ return std::__invoke(_M_pm, std::forward<_Tp>(__obj)); } { return std::__invoke(_M_pm, std::forward<_Tp>(__obj)); }
}; };
template<typename _MemberPointer>
struct _Mem_fn; // undefined
template<typename _Res, typename _Class> template<typename _Res, typename _Class>
struct _Mem_fn<_Res _Class::*> struct _Mem_fn<_Res _Class::*>
: _Mem_fn_base<_Res _Class::*> : _Mem_fn_base<_Res _Class::*>
...@@ -1251,778 +897,6 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type) ...@@ -1251,778 +897,6 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type)
std::forward<_BoundArgs>(__args)...); std::forward<_BoundArgs>(__args)...);
} }
/**
* @brief Exception class thrown when class template function's
* operator() is called with an empty target.
* @ingroup exceptions
*/
class bad_function_call : public std::exception
{
public:
virtual ~bad_function_call() noexcept;
const char* what() const noexcept;
};
/**
* Trait identifying "location-invariant" types, meaning that the
* address of the object (or any of its members) will not escape.
* Trivially copyable types are location-invariant and users can
* specialize this trait for other types.
*/
template<typename _Tp>
struct __is_location_invariant
: is_trivially_copyable<_Tp>::type
{ };
class _Undefined_class;
union _Nocopy_types
{
void* _M_object;
const void* _M_const_object;
void (*_M_function_pointer)();
void (_Undefined_class::*_M_member_pointer)();
};
union [[gnu::may_alias]] _Any_data
{
void* _M_access() { return &_M_pod_data[0]; }
const void* _M_access() const { return &_M_pod_data[0]; }
template<typename _Tp>
_Tp&
_M_access()
{ return *static_cast<_Tp*>(_M_access()); }
template<typename _Tp>
const _Tp&
_M_access() const
{ return *static_cast<const _Tp*>(_M_access()); }
_Nocopy_types _M_unused;
char _M_pod_data[sizeof(_Nocopy_types)];
};
enum _Manager_operation
{
__get_type_info,
__get_functor_ptr,
__clone_functor,
__destroy_functor
};
// Simple type wrapper that helps avoid annoying const problems
// when casting between void pointers and pointers-to-pointers.
template<typename _Tp>
struct _Simple_type_wrapper
{
_Simple_type_wrapper(_Tp __value) : __value(__value) { }
_Tp __value;
};
template<typename _Tp>
struct __is_location_invariant<_Simple_type_wrapper<_Tp> >
: __is_location_invariant<_Tp>
{ };
template<typename _Signature>
class function;
/// Base class of all polymorphic function object wrappers.
class _Function_base
{
public:
static const std::size_t _M_max_size = sizeof(_Nocopy_types);
static const std::size_t _M_max_align = __alignof__(_Nocopy_types);
template<typename _Functor>
class _Base_manager
{
protected:
static const bool __stored_locally =
(__is_location_invariant<_Functor>::value
&& sizeof(_Functor) <= _M_max_size
&& __alignof__(_Functor) <= _M_max_align
&& (_M_max_align % __alignof__(_Functor) == 0));
typedef integral_constant<bool, __stored_locally> _Local_storage;
// Retrieve a pointer to the function object
static _Functor*
_M_get_pointer(const _Any_data& __source)
{
const _Functor* __ptr =
__stored_locally? std::__addressof(__source._M_access<_Functor>())
/* have stored a pointer */ : __source._M_access<_Functor*>();
return const_cast<_Functor*>(__ptr);
}
// Clone a location-invariant function object that fits within
// an _Any_data structure.
static void
_M_clone(_Any_data& __dest, const _Any_data& __source, true_type)
{
::new (__dest._M_access()) _Functor(__source._M_access<_Functor>());
}
// Clone a function object that is not location-invariant or
// that cannot fit into an _Any_data structure.
static void
_M_clone(_Any_data& __dest, const _Any_data& __source, false_type)
{
__dest._M_access<_Functor*>() =
new _Functor(*__source._M_access<_Functor*>());
}
// Destroying a location-invariant object may still require
// destruction.
static void
_M_destroy(_Any_data& __victim, true_type)
{
__victim._M_access<_Functor>().~_Functor();
}
// Destroying an object located on the heap.
static void
_M_destroy(_Any_data& __victim, false_type)
{
delete __victim._M_access<_Functor*>();
}
public:
static bool
_M_manager(_Any_data& __dest, const _Any_data& __source,
_Manager_operation __op)
{
switch (__op)
{
#if __cpp_rtti
case __get_type_info:
__dest._M_access<const type_info*>() = &typeid(_Functor);
break;
#endif
case __get_functor_ptr:
__dest._M_access<_Functor*>() = _M_get_pointer(__source);
break;
case __clone_functor:
_M_clone(__dest, __source, _Local_storage());
break;
case __destroy_functor:
_M_destroy(__dest, _Local_storage());
break;
}
return false;
}
static void
_M_init_functor(_Any_data& __functor, _Functor&& __f)
{ _M_init_functor(__functor, std::move(__f), _Local_storage()); }
template<typename _Signature>
static bool
_M_not_empty_function(const function<_Signature>& __f)
{ return static_cast<bool>(__f); }
template<typename _Tp>
static bool
_M_not_empty_function(_Tp* __fp)
{ return __fp != nullptr; }
template<typename _Class, typename _Tp>
static bool
_M_not_empty_function(_Tp _Class::* __mp)
{ return __mp != nullptr; }
template<typename _Tp>
static bool
_M_not_empty_function(const _Tp&)
{ return true; }
private:
static void
_M_init_functor(_Any_data& __functor, _Functor&& __f, true_type)
{ ::new (__functor._M_access()) _Functor(std::move(__f)); }
static void
_M_init_functor(_Any_data& __functor, _Functor&& __f, false_type)
{ __functor._M_access<_Functor*>() = new _Functor(std::move(__f)); }
};
template<typename _Functor>
class _Ref_manager : public _Base_manager<_Functor*>
{
typedef _Function_base::_Base_manager<_Functor*> _Base;
public:
static bool
_M_manager(_Any_data& __dest, const _Any_data& __source,
_Manager_operation __op)
{
switch (__op)
{
#if __cpp_rtti
case __get_type_info:
__dest._M_access<const type_info*>() = &typeid(_Functor);
break;
#endif
case __get_functor_ptr:
__dest._M_access<_Functor*>() = *_Base::_M_get_pointer(__source);
return is_const<_Functor>::value;
break;
default:
_Base::_M_manager(__dest, __source, __op);
}
return false;
}
static void
_M_init_functor(_Any_data& __functor, reference_wrapper<_Functor> __f)
{
_Base::_M_init_functor(__functor, std::__addressof(__f.get()));
}
};
_Function_base() : _M_manager(nullptr) { }
~_Function_base()
{
if (_M_manager)
_M_manager(_M_functor, _M_functor, __destroy_functor);
}
bool _M_empty() const { return !_M_manager; }
typedef bool (*_Manager_type)(_Any_data&, const _Any_data&,
_Manager_operation);
_Any_data _M_functor;
_Manager_type _M_manager;
};
template<typename _Signature, typename _Functor>
class _Function_handler;
template<typename _Res, typename _Functor, typename... _ArgTypes>
class _Function_handler<_Res(_ArgTypes...), _Functor>
: public _Function_base::_Base_manager<_Functor>
{
typedef _Function_base::_Base_manager<_Functor> _Base;
public:
static _Res
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
return (*_Base::_M_get_pointer(__functor))(
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Functor, typename... _ArgTypes>
class _Function_handler<void(_ArgTypes...), _Functor>
: public _Function_base::_Base_manager<_Functor>
{
typedef _Function_base::_Base_manager<_Functor> _Base;
public:
static void
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
(*_Base::_M_get_pointer(__functor))(
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Res, typename _Functor, typename... _ArgTypes>
class _Function_handler<_Res(_ArgTypes...), reference_wrapper<_Functor> >
: public _Function_base::_Ref_manager<_Functor>
{
typedef _Function_base::_Ref_manager<_Functor> _Base;
public:
static _Res
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
return std::__invoke(**_Base::_M_get_pointer(__functor),
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Functor, typename... _ArgTypes>
class _Function_handler<void(_ArgTypes...), reference_wrapper<_Functor> >
: public _Function_base::_Ref_manager<_Functor>
{
typedef _Function_base::_Ref_manager<_Functor> _Base;
public:
static void
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
std::__invoke(**_Base::_M_get_pointer(__functor),
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Class, typename _Member, typename _Res,
typename... _ArgTypes>
class _Function_handler<_Res(_ArgTypes...), _Member _Class::*>
: public _Function_handler<void(_ArgTypes...), _Member _Class::*>
{
typedef _Function_handler<void(_ArgTypes...), _Member _Class::*>
_Base;
public:
static _Res
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
return std::__invoke(_Base::_M_get_pointer(__functor)->__value,
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _Class, typename _Member, typename... _ArgTypes>
class _Function_handler<void(_ArgTypes...), _Member _Class::*>
: public _Function_base::_Base_manager<
_Simple_type_wrapper< _Member _Class::* > >
{
typedef _Member _Class::* _Functor;
typedef _Simple_type_wrapper<_Functor> _Wrapper;
typedef _Function_base::_Base_manager<_Wrapper> _Base;
public:
static bool
_M_manager(_Any_data& __dest, const _Any_data& __source,
_Manager_operation __op)
{
switch (__op)
{
#if __cpp_rtti
case __get_type_info:
__dest._M_access<const type_info*>() = &typeid(_Functor);
break;
#endif
case __get_functor_ptr:
__dest._M_access<_Functor*>() =
&_Base::_M_get_pointer(__source)->__value;
break;
default:
_Base::_M_manager(__dest, __source, __op);
}
return false;
}
static void
_M_invoke(const _Any_data& __functor, _ArgTypes&&... __args)
{
std::__invoke(_Base::_M_get_pointer(__functor)->__value,
std::forward<_ArgTypes>(__args)...);
}
};
template<typename _From, typename _To>
using __check_func_return_type
= __or_<is_void<_To>, is_same<_From, _To>, is_convertible<_From, _To>>;
/**
* @brief Primary class template for std::function.
* @ingroup functors
*
* Polymorphic function wrapper.
*/
template<typename _Res, typename... _ArgTypes>
class function<_Res(_ArgTypes...)>
: public _Maybe_unary_or_binary_function<_Res, _ArgTypes...>,
private _Function_base
{
typedef _Res _Signature_type(_ArgTypes...);
template<typename _Func,
typename _Res2 = typename result_of<_Func&(_ArgTypes...)>::type>
struct _Callable : __check_func_return_type<_Res2, _Res> { };
// Used so the return type convertibility checks aren't done when
// performing overload resolution for copy construction/assignment.
template<typename _Tp>
struct _Callable<function, _Tp> : false_type { };
template<typename _Cond, typename _Tp>
using _Requires = typename enable_if<_Cond::value, _Tp>::type;
public:
typedef _Res result_type;
// [3.7.2.1] construct/copy/destroy
/**
* @brief Default construct creates an empty function call wrapper.
* @post @c !(bool)*this
*/
function() noexcept
: _Function_base() { }
/**
* @brief Creates an empty function call wrapper.
* @post @c !(bool)*this
*/
function(nullptr_t) noexcept
: _Function_base() { }
/**
* @brief %Function copy constructor.
* @param __x A %function object with identical call signature.
* @post @c bool(*this) == bool(__x)
*
* The newly-created %function contains a copy of the target of @a
* __x (if it has one).
*/
function(const function& __x);
/**
* @brief %Function move constructor.
* @param __x A %function object rvalue with identical call signature.
*
* The newly-created %function contains the target of @a __x
* (if it has one).
*/
function(function&& __x) : _Function_base()
{
__x.swap(*this);
}
/**
* @brief Builds a %function that targets a copy of the incoming
* function object.
* @param __f A %function object that is callable with parameters of
* type @c T1, @c T2, ..., @c TN and returns a value convertible
* to @c Res.
*
* The newly-created %function object will target a copy of
* @a __f. If @a __f is @c reference_wrapper<F>, then this function
* object will contain a reference to the function object @c
* __f.get(). If @a __f is a NULL function pointer or NULL
* pointer-to-member, the newly-created object will be empty.
*
* If @a __f is a non-NULL function pointer or an object of type @c
* reference_wrapper<F>, this function will not throw.
*/
template<typename _Functor,
typename = _Requires<__not_<is_same<_Functor, function>>, void>,
typename = _Requires<_Callable<_Functor>, void>>
function(_Functor);
/**
* @brief %Function assignment operator.
* @param __x A %function with identical call signature.
* @post @c (bool)*this == (bool)x
* @returns @c *this
*
* The target of @a __x is copied to @c *this. If @a __x has no
* target, then @c *this will be empty.
*
* If @a __x targets a function pointer or a reference to a function
* object, then this operation will not throw an %exception.
*/
function&
operator=(const function& __x)
{
function(__x).swap(*this);
return *this;
}
/**
* @brief %Function move-assignment operator.
* @param __x A %function rvalue with identical call signature.
* @returns @c *this
*
* The target of @a __x is moved to @c *this. If @a __x has no
* target, then @c *this will be empty.
*
* If @a __x targets a function pointer or a reference to a function
* object, then this operation will not throw an %exception.
*/
function&
operator=(function&& __x)
{
function(std::move(__x)).swap(*this);
return *this;
}
/**
* @brief %Function assignment to zero.
* @post @c !(bool)*this
* @returns @c *this
*
* The target of @c *this is deallocated, leaving it empty.
*/
function&
operator=(nullptr_t) noexcept
{
if (_M_manager)
{
_M_manager(_M_functor, _M_functor, __destroy_functor);
_M_manager = nullptr;
_M_invoker = nullptr;
}
return *this;
}
/**
* @brief %Function assignment to a new target.
* @param __f A %function object that is callable with parameters of
* type @c T1, @c T2, ..., @c TN and returns a value convertible
* to @c Res.
* @return @c *this
*
* This %function object wrapper will target a copy of @a
* __f. If @a __f is @c reference_wrapper<F>, then this function
* object will contain a reference to the function object @c
* __f.get(). If @a __f is a NULL function pointer or NULL
* pointer-to-member, @c this object will be empty.
*
* If @a __f is a non-NULL function pointer or an object of type @c
* reference_wrapper<F>, this function will not throw.
*/
template<typename _Functor>
_Requires<_Callable<typename decay<_Functor>::type>, function&>
operator=(_Functor&& __f)
{
function(std::forward<_Functor>(__f)).swap(*this);
return *this;
}
/// @overload
template<typename _Functor>
function&
operator=(reference_wrapper<_Functor> __f) noexcept
{
function(__f).swap(*this);
return *this;
}
// [3.7.2.2] function modifiers
/**
* @brief Swap the targets of two %function objects.
* @param __x A %function with identical call signature.
*
* Swap the targets of @c this function object and @a __f. This
* function will not throw an %exception.
*/
void swap(function& __x) noexcept
{
std::swap(_M_functor, __x._M_functor);
std::swap(_M_manager, __x._M_manager);
std::swap(_M_invoker, __x._M_invoker);
}
// [3.7.2.3] function capacity
/**
* @brief Determine if the %function wrapper has a target.
*
* @return @c true when this %function object contains a target,
* or @c false when it is empty.
*
* This function will not throw an %exception.
*/
explicit operator bool() const noexcept
{ return !_M_empty(); }
// [3.7.2.4] function invocation
/**
* @brief Invokes the function targeted by @c *this.
* @returns the result of the target.
* @throws bad_function_call when @c !(bool)*this
*
* The function call operator invokes the target function object
* stored by @c this.
*/
_Res operator()(_ArgTypes... __args) const;
#if __cpp_rtti
// [3.7.2.5] function target access
/**
* @brief Determine the type of the target of this function object
* wrapper.
*
* @returns the type identifier of the target function object, or
* @c typeid(void) if @c !(bool)*this.
*
* This function will not throw an %exception.
*/
const type_info& target_type() const noexcept;
/**
* @brief Access the stored target function object.
*
* @return Returns a pointer to the stored target function object,
* if @c typeid(Functor).equals(target_type()); otherwise, a NULL
* pointer.
*
* This function will not throw an %exception.
*/
template<typename _Functor> _Functor* target() noexcept;
/// @overload
template<typename _Functor> const _Functor* target() const noexcept;
#endif
private:
using _Invoker_type = _Res (*)(const _Any_data&, _ArgTypes&&...);
_Invoker_type _M_invoker;
};
// Out-of-line member definitions.
template<typename _Res, typename... _ArgTypes>
function<_Res(_ArgTypes...)>::
function(const function& __x)
: _Function_base()
{
if (static_cast<bool>(__x))
{
__x._M_manager(_M_functor, __x._M_functor, __clone_functor);
_M_invoker = __x._M_invoker;
_M_manager = __x._M_manager;
}
}
template<typename _Res, typename... _ArgTypes>
template<typename _Functor, typename, typename>
function<_Res(_ArgTypes...)>::
function(_Functor __f)
: _Function_base()
{
typedef _Function_handler<_Signature_type, _Functor> _My_handler;
if (_My_handler::_M_not_empty_function(__f))
{
_My_handler::_M_init_functor(_M_functor, std::move(__f));
_M_invoker = &_My_handler::_M_invoke;
_M_manager = &_My_handler::_M_manager;
}
}
template<typename _Res, typename... _ArgTypes>
_Res
function<_Res(_ArgTypes...)>::
operator()(_ArgTypes... __args) const
{
if (_M_empty())
__throw_bad_function_call();
return _M_invoker(_M_functor, std::forward<_ArgTypes>(__args)...);
}
#if __cpp_rtti
template<typename _Res, typename... _ArgTypes>
const type_info&
function<_Res(_ArgTypes...)>::
target_type() const noexcept
{
if (_M_manager)
{
_Any_data __typeinfo_result;
_M_manager(__typeinfo_result, _M_functor, __get_type_info);
return *__typeinfo_result._M_access<const type_info*>();
}
else
return typeid(void);
}
template<typename _Res, typename... _ArgTypes>
template<typename _Functor>
_Functor*
function<_Res(_ArgTypes...)>::
target() noexcept
{
if (typeid(_Functor) == target_type() && _M_manager)
{
_Any_data __ptr;
if (_M_manager(__ptr, _M_functor, __get_functor_ptr)
&& !is_const<_Functor>::value)
return 0;
else
return __ptr._M_access<_Functor*>();
}
else
return 0;
}
template<typename _Res, typename... _ArgTypes>
template<typename _Functor>
const _Functor*
function<_Res(_ArgTypes...)>::
target() const noexcept
{
if (typeid(_Functor) == target_type() && _M_manager)
{
_Any_data __ptr;
_M_manager(__ptr, _M_functor, __get_functor_ptr);
return __ptr._M_access<const _Functor*>();
}
else
return 0;
}
#endif
// [20.7.15.2.6] null pointer comparisons
/**
* @brief Compares a polymorphic function object wrapper against 0
* (the NULL pointer).
* @returns @c true if the wrapper has no target, @c false otherwise
*
* This function will not throw an %exception.
*/
template<typename _Res, typename... _Args>
inline bool
operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
{ return !static_cast<bool>(__f); }
/// @overload
template<typename _Res, typename... _Args>
inline bool
operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
{ return !static_cast<bool>(__f); }
/**
* @brief Compares a polymorphic function object wrapper against 0
* (the NULL pointer).
* @returns @c false if the wrapper has no target, @c true otherwise
*
* This function will not throw an %exception.
*/
template<typename _Res, typename... _Args>
inline bool
operator!=(const function<_Res(_Args...)>& __f, nullptr_t) noexcept
{ return static_cast<bool>(__f); }
/// @overload
template<typename _Res, typename... _Args>
inline bool
operator!=(nullptr_t, const function<_Res(_Args...)>& __f) noexcept
{ return static_cast<bool>(__f); }
// [20.7.15.2.7] specialized algorithms
/**
* @brief Swap the targets of two polymorphic function object wrappers.
*
* This function will not throw an %exception.
*/
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 2062. Effect contradictions w/o no-throw guarantee of std::function swaps
template<typename _Res, typename... _Args>
inline void
swap(function<_Res(_Args...)>& __x, function<_Res(_Args...)>& __y) noexcept
{ __x.swap(__y); }
#if __cplusplus >= 201402L #if __cplusplus >= 201402L
/// Generalized negator. /// Generalized negator.
template<typename _Fn> template<typename _Fn>
...@@ -2084,12 +958,9 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type) ...@@ -2084,12 +958,9 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type)
private: private:
_Fn _M_fn; _Fn _M_fn;
}; };
#endif // C++14
#if __cplusplus > 201402L #if __cplusplus > 201402L
#define __cpp_lib_not_fn 201603 #define __cpp_lib_not_fn 201603
/// [func.not_fn] Function template not_fn /// [func.not_fn] Function template not_fn
template<typename _Fn> template<typename _Fn>
inline auto inline auto
...@@ -2410,6 +1281,7 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type) ...@@ -2410,6 +1281,7 @@ _GLIBCXX_MEM_FN_TRAITS(&&, false_type, true_type)
} }
#endif // C++17 #endif // C++17
#endif // C++14
_GLIBCXX_END_NAMESPACE_VERSION _GLIBCXX_END_NAMESPACE_VERSION
} // namespace std } // namespace std
......
libstdc++-v3/include/std/future
...@@ -40,12 +40,12 @@ ...@@ -40,12 +40,12 @@
#include <condition_variable> #include <condition_variable>
#include <system_error> #include <system_error>
#include <atomic> #include <atomic>
#include <functional>
#include <bits/atomic_futex.h> #include <bits/atomic_futex.h>
#include <bits/functexcept.h> #include <bits/functexcept.h>
#include <bits/invoke.h> #include <bits/invoke.h>
#include <bits/unique_ptr.h> #include <bits/unique_ptr.h>
#include <bits/shared_ptr.h> #include <bits/shared_ptr.h>
#include <bits/std_function.h>
#include <bits/uses_allocator.h> #include <bits/uses_allocator.h>
#include <bits/allocated_ptr.h> #include <bits/allocated_ptr.h>
#include <ext/aligned_buffer.h> #include <ext/aligned_buffer.h>
......
libstdc++-v3/include/std/mutex
...@@ -46,7 +46,7 @@ ...@@ -46,7 +46,7 @@
# include <thread> # include <thread>
#endif #endif
#ifndef _GLIBCXX_HAVE_TLS #ifndef _GLIBCXX_HAVE_TLS
# include <functional> # include <bits/std_function.h>
#endif #endif
#ifdef _GLIBCXX_USE_C99_STDINT_TR1 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
......
libstdc++-v3/include/std/regex
...@@ -37,7 +37,6 @@ ...@@ -37,7 +37,6 @@
#include <algorithm> #include <algorithm>
#include <bitset> #include <bitset>
#include <functional>
#ifdef _GLIBCXX_DEBUG #ifdef _GLIBCXX_DEBUG
# include <iosfwd> # include <iosfwd>
#endif #endif
...@@ -54,6 +53,7 @@ ...@@ -54,6 +53,7 @@
#include <cstring> #include <cstring>
#include <ext/aligned_buffer.h> #include <ext/aligned_buffer.h>
#include <bits/std_function.h>
#include <bits/regex_constants.h> #include <bits/regex_constants.h>
#include <bits/regex_error.h> #include <bits/regex_error.h>
#include <bits/regex_automaton.h> #include <bits/regex_automaton.h>
......
libstdc++-v3/src/c++11/compatibility-thread-c++0x.cc
...@@ -29,6 +29,7 @@ ...@@ -29,6 +29,7 @@
#include <future> #include <future>
#include <mutex> #include <mutex>
#include <functional>
#if __cplusplus < 201103L #if __cplusplus < 201103L
# error "compatibility-thread-c++0x.cc must be compiled with -std=gnu++0x" # error "compatibility-thread-c++0x.cc must be compiled with -std=gnu++0x"
......
libstdc++-v3/testsuite/20_util/default_delete/48631_neg.cc
...@@ -26,4 +26,4 @@ struct D : B { }; ...@@ -26,4 +26,4 @@ struct D : B { };
D d; D d;
std::default_delete<B[]> db; std::default_delete<B[]> db;
typedef decltype(db(&d)) type; // { dg-error "no match" } typedef decltype(db(&d)) type; // { dg-error "no match" }
// { dg-error "no type" "" { target *-*-* } 106 } // { dg-error "no type" "" { target *-*-* } 107 }
libstdc++-v3/testsuite/20_util/default_delete/void_neg.cc
...@@ -25,5 +25,5 @@ void test01() ...@@ -25,5 +25,5 @@ void test01()
{ {
std::default_delete<void> d; std::default_delete<void> d;
d(nullptr); // { dg-error "here" } d(nullptr); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 72 } // { dg-error "incomplete" "" { target *-*-* } 73 }
} }
libstdc++-v3/testsuite/20_util/unique_ptr/assign/48635_neg.cc
...@@ -42,10 +42,10 @@ void f() ...@@ -42,10 +42,10 @@ void f()
std::unique_ptr<int, D&> ud(nullptr, d); std::unique_ptr<int, D&> ud(nullptr, d);
ub = std::move(ud); // { dg-error "no match" } ub = std::move(ud); // { dg-error "no match" }
ub2 = ud; // { dg-error "no match" } ub2 = ud; // { dg-error "no match" }
// { dg-error "no type" "" { target *-*-* } 287 } // { dg-error "no type" "" { target *-*-* } 288 }
std::unique_ptr<int[], B&> uba(nullptr, b); std::unique_ptr<int[], B&> uba(nullptr, b);
std::unique_ptr<int[], D&> uda(nullptr, d); std::unique_ptr<int[], D&> uda(nullptr, d);
uba = std::move(uda); // { dg-error "no match" } uba = std::move(uda); // { dg-error "no match" }
// { dg-error "no type" "" { target *-*-* } 538 } // { dg-error "no type" "" { target *-*-* } 539 }
} }
libstdc++-v3/testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc
...@@ -39,7 +39,7 @@ test07() ...@@ -39,7 +39,7 @@ test07()
std::unique_ptr<const A[]> cA3(p); // { dg-error "no matching function" } std::unique_ptr<const A[]> cA3(p); // { dg-error "no matching function" }
std::unique_ptr<volatile A[]> vA3(p); // { dg-error "no matching function" } std::unique_ptr<volatile A[]> vA3(p); // { dg-error "no matching function" }
std::unique_ptr<const volatile A[]> cvA3(p); // { dg-error "no matching function" } std::unique_ptr<const volatile A[]> cvA3(p); // { dg-error "no matching function" }
// { dg-error "no type" "" { target *-*-* } 446 } // { dg-error "no type" "" { target *-*-* } 447 }
} }
template<typename T> template<typename T>
......
libstdc++-v3/testsuite/30_threads/packaged_task/49668.cc
...@@ -24,6 +24,7 @@ ...@@ -24,6 +24,7 @@
#include <future> #include <future>
#include <functional>
#include <testsuite_hooks.h> #include <testsuite_hooks.h>
struct moveable struct moveable
......
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