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File cast.h

// <cast.h> -*- C++ -*-

// Copyright (C) 2008-2018 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 ext/cast.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{ext/pointer.h}
 */

#ifndef _GLIBCXX_CAST_H
#define _GLIBCXX_CAST_H 1

namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

/**
   * These functions are here to allow containers to support non standard
   * pointer types.  For normal pointers, these resolve to the use of the
   * standard cast operation.  For other types the functions will perform
   * the appropriate cast to/from the custom pointer class so long as that
   * class meets the following conditions:
   * 1) has a typedef element_type which names tehe type it points to.
   * 2) has a get() const method which returns element_type*.
   * 3) has a constructor which can take one element_type* argument.
   */

/**
   * This type supports the semantics of the pointer cast operators (below.)
   */
  template<typename _ToType>
    struct _Caster
    { typedef typename _ToType::element_type*  type; };

template<typename _ToType>
    struct _Caster<_ToType*>
    { typedef _ToType*  type; };

/**
   * Casting operations for cases where _FromType is not a standard pointer.
   * _ToType can be a standard or non-standard pointer.  Given that _FromType
   * is not a pointer, it must have a get() method that returns the standard
   * pointer equivalent of the address it points to, and must have an
   * element_type typedef which names the type it points to.
   */
  template<typename _ToType, typename _FromType>
    inline _ToType
    __static_pointer_cast(const _FromType& __arg)
    { return _ToType(static_cast<typename _Caster<_ToType>::
		     type>(__arg.get())); }

template<typename _ToType, typename _FromType>
    inline _ToType
    __dynamic_pointer_cast(const _FromType& __arg)
    { return _ToType(dynamic_cast<typename _Caster<_ToType>::
		     type>(__arg.get())); }

template<typename _ToType, typename _FromType>
    inline _ToType
    __const_pointer_cast(const _FromType& __arg)
    { return _ToType(const_cast<typename _Caster<_ToType>::
		     type>(__arg.get())); }

template<typename _ToType, typename _FromType>
    inline _ToType
    __reinterpret_pointer_cast(const _FromType& __arg)
    { return _ToType(reinterpret_cast<typename _Caster<_ToType>::
		     type>(__arg.get())); }

/**
   * Casting operations for cases where _FromType is a standard pointer.
   * _ToType can be a standard or non-standard pointer.
   */
  template<typename _ToType, typename _FromType>
    inline _ToType
    __static_pointer_cast(_FromType* __arg)
    { return _ToType(static_cast<typename _Caster<_ToType>::
		     type>(__arg)); }

template<typename _ToType, typename _FromType>
    inline _ToType
    __dynamic_pointer_cast(_FromType* __arg)
    { return _ToType(dynamic_cast<typename _Caster<_ToType>::
		     type>(__arg)); }

template<typename _ToType, typename _FromType>
    inline _ToType
    __const_pointer_cast(_FromType* __arg)
    { return _ToType(const_cast<typename _Caster<_ToType>::
		     type>(__arg)); }

template<typename _ToType, typename _FromType>
    inline _ToType
    __reinterpret_pointer_cast(_FromType* __arg)
    { return _ToType(reinterpret_cast<typename _Caster<_ToType>::
		     type>(__arg)); }

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

#endif // _GLIBCXX_CAST_H

Name	Type	Size	Permission	Last Modified	Actions
.	DIR	-	drwxr-xr-x	2025-08-28 10:58:25
..	DIR	-	drwxr-xr-x	2025-08-28 10:58:25
pb_ds	DIR	-	drwxr-xr-x	2025-08-28 10:58:25
algorithm	text/x-c	18.84 KB	-rw-r--r--	2025-08-26 09:45:00
aligned_buffer.h	text/plain	3.88 KB	-rw-r--r--	2025-08-26 09:45:00
alloc_traits.h	text/plain	5.57 KB	-rw-r--r--	2025-08-26 09:45:00
array_allocator.h	text/x-c	5.26 KB	-rw-r--r--	2025-08-26 09:45:00
atomicity.h	text/x-c	3.43 KB	-rw-r--r--	2025-08-26 09:45:00
bitmap_allocator.h	text/x-c	31.08 KB	-rw-r--r--	2025-08-26 09:45:00
cast.h	text/plain	4.34 KB	-rw-r--r--	2025-08-26 09:45:00
cmath	text/x-c	6.42 KB	-rw-r--r--	2025-08-26 09:45:00
codecvt_specializations.h	text/x-c	15.97 KB	-rw-r--r--	2025-08-26 09:45:00
concurrence.h	text/x-c	7.43 KB	-rw-r--r--	2025-08-26 09:45:00
debug_allocator.h	text/x-c	5.58 KB	-rw-r--r--	2025-08-26 09:45:00
enc_filebuf.h	text/x-c	2.19 KB	-rw-r--r--	2025-08-26 09:45:00
extptr_allocator.h	text/x-c	6.04 KB	-rw-r--r--	2025-08-26 09:45:00
functional	text/x-c	13.96 KB	-rw-r--r--	2025-08-26 09:45:00
hash_map	text/x-c	17.36 KB	-rw-r--r--	2025-08-26 09:45:01
hash_set	text/x-c	16.79 KB	-rw-r--r--	2025-08-26 09:45:01
iterator	text/x-c	3.94 KB	-rw-r--r--	2025-08-26 09:45:00
malloc_allocator.h	text/x-c	4.97 KB	-rw-r--r--	2025-08-26 09:45:00
memory	text/x-c	6.99 KB	-rw-r--r--	2025-08-26 09:45:00
mt_allocator.h	text/x-c	22.96 KB	-rw-r--r--	2025-08-26 09:45:00
new_allocator.h	text/x-c	4.69 KB	-rw-r--r--	2025-08-26 09:45:00
numeric	text/x-c	4.62 KB	-rw-r--r--	2025-08-26 09:45:00
numeric_traits.h	text/x-c	4.47 KB	-rw-r--r--	2025-08-26 09:45:00
pod_char_traits.h	text/x-c	5.43 KB	-rw-r--r--	2025-08-26 09:45:00
pointer.h	text/x-c	19.36 KB	-rw-r--r--	2025-08-26 09:45:00
pool_allocator.h	text/x-c	8.61 KB	-rw-r--r--	2025-08-26 09:45:00
random	text/x-c	108.78 KB	-rw-r--r--	2025-08-26 09:45:00
random.tcc	text/plain	58.83 KB	-rw-r--r--	2025-08-26 09:45:00
rb_tree	text/x-c	3.23 KB	-rw-r--r--	2025-08-26 09:45:00
rc_string_base.h	text/x-c	23.18 KB	-rw-r--r--	2025-08-26 09:45:01
rope	text/x-c	85.58 KB	-rw-r--r--	2025-08-26 09:45:00
ropeimpl.h	text/x-c	47.3 KB	-rw-r--r--	2025-08-26 09:45:00
slist	text/x-c	28.91 KB	-rw-r--r--	2025-08-26 09:45:00
sso_string_base.h	text/plain	15.93 KB	-rw-r--r--	2025-08-26 09:45:01
stdio_filebuf.h	text/x-c	5.54 KB	-rw-r--r--	2025-08-26 09:45:00
stdio_sync_filebuf.h	text/x-c	8.58 KB	-rw-r--r--	2025-08-26 09:45:00
string_conversions.h	text/x-c	3.51 KB	-rw-r--r--	2025-08-26 09:45:00
throw_allocator.h	text/x-c	23.96 KB	-rw-r--r--	2025-08-26 09:45:00
type_traits.h	text/x-c	5.78 KB	-rw-r--r--	2025-08-26 09:45:00
typelist.h	text/x-c	16.09 KB	-rw-r--r--	2025-08-26 09:45:00
vstring.h	text/x-c	107.98 KB	-rw-r--r--	2025-08-26 09:45:01
vstring.tcc	text/x-c	23.06 KB	-rw-r--r--	2025-08-26 09:45:01
vstring_fwd.h	text/x-c	3.15 KB	-rw-r--r--	2025-08-26 09:45:01
vstring_util.h	text/x-c	5.63 KB	-rw-r--r--	2025-08-26 09:45:01

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