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414 lines
16 KiB
414 lines
16 KiB
/* /////////////////////////////////////////////////////////////////////////
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* File: stlsoft/string/string_traits.hpp
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*
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* Purpose: string_traits traits class.
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*
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* Created: 16th January 2002
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* Updated: 10th August 2009
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*
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* Home: http://stlsoft.org/
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*
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* Copyright (c) 2002-2009, Matthew Wilson and Synesis Software
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
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* any contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* ////////////////////////////////////////////////////////////////////// */
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/** \file stlsoft/string/string_traits.hpp
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*
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* \brief [C++ only] Definition of the stlsoft::string_traits traits class
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* (\ref group__library__string "String" Library).
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*/
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#ifndef STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TRAITS
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#define STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TRAITS
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#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
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# define STLSOFT_VER_STLSOFT_STRING_HPP_STRING_TRAITS_MAJOR 4
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# define STLSOFT_VER_STLSOFT_STRING_HPP_STRING_TRAITS_MINOR 0
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# define STLSOFT_VER_STLSOFT_STRING_HPP_STRING_TRAITS_REVISION 4
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# define STLSOFT_VER_STLSOFT_STRING_HPP_STRING_TRAITS_EDIT 78
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#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
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/* /////////////////////////////////////////////////////////////////////////
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* Compatibility
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*/
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/*
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[Incompatibilies-start]
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[Incompatibilies-end]
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*/
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/* /////////////////////////////////////////////////////////////////////////
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* Includes
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*/
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#ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT
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# include <stlsoft/stlsoft.h>
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#endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */
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#ifndef STLSOFT_INCL_STLSOFT_STRING_HPP_CHAR_TRAITS
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# include <stlsoft/string/char_traits.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_STRING_HPP_CHAR_TRAITS */
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#ifndef STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TRAITS_FWD
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# include <stlsoft/string/string_traits_fwd.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TRAITS_FWD */
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#ifndef _STLSOFT_STRING_TRAITS_NO_STD_STRING
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# include <string>
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#endif /* _STLSOFT_STRING_TRAITS_NO_STD_STRING */
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#ifdef STLSOFT_UNITTEST
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# include <string>
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# include <stlsoft/meta/base_type_traits.hpp>
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#endif /* STLSOFT_UNITTEST */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#ifndef _STLSOFT_NO_NAMESPACE
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namespace stlsoft
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{
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#endif /* _STLSOFT_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Classes
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*/
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#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
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/* C-style ANSI string */
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<ss_char_a_t *>
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{
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typedef ss_char_a_t value_type;
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typedef ss_char_a_t char_type;
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typedef ss_size_t size_type;
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typedef char_type const const_char_type;
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typedef value_type const* string_type;
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typedef value_type* pointer;
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typedef value_type const* const_pointer;
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enum { is_pointer = true };
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enum { is_pointer_to_const = false };
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enum { char_type_size = int(sizeof(char_type)) };
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static string_type empty_string()
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{
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// This character array is initialised to 0, which conveniently happens to
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// be the empty string, by the module/application load, so it is
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// guaranteed to be valid, and there are no threading/race conditions
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static char_type s_empty[1];
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STLSOFT_ASSERT(s_empty[0] == '\0'); // Paranoid check
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return s_empty;
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}
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};
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<ss_char_a_t const*>
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{
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typedef ss_char_a_t value_type;
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typedef ss_char_a_t char_type;
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typedef ss_size_t size_type;
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typedef char_type const const_char_type;
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typedef value_type const* string_type;
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typedef value_type* pointer;
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typedef value_type const* const_pointer;
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enum { is_pointer = true };
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enum { is_pointer_to_const = false };
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enum { char_type_size = int(sizeof(char_type)) };
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static string_type empty_string()
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{
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// This character array is initialised to 0, which conveniently happens to
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// be the empty string, by the module/application load, so it is
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// guaranteed to be valid, and there are no threading/race conditions
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static char_type s_empty[1];
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STLSOFT_ASSERT(s_empty[0] == '\0'); // Paranoid check
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return s_empty;
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}
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};
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# if 0
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# ifdef STLSOFT_CF_STATIC_ARRAY_SIZE_DETERMINATION_SUPPORT
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# if 1
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template <ss_size_t N>
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struct string_traits<ss_char_a_t const (&)[N]>
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: public string_traits<ss_char_a_t const*>
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{};
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template <ss_size_t N>
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struct string_traits<ss_char_a_t (&)[N]>
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: public string_traits<ss_char_a_t *>
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{};
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<ss_char_a_t const []>
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: public string_traits<ss_char_a_t const*>
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{};
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<ss_char_a_t []>
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: public string_traits<ss_char_a_t *>
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{};
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# else /* ? 0 */
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template <ss_typename_param_k C, ss_size_t N>
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struct string_traits<C (&)[N]>
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: public string_traits<C *>
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{
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typedef ss_char_a_t value_type;
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typedef ss_char_a_t char_type;
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typedef ss_size_t size_type;
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typedef char_type const const_char_type;
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typedef value_type const* string_type;
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typedef value_type* pointer;
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typedef value_type const* const_pointer;
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};
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template <ss_typename_param_k C, ss_size_t N>
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struct string_traits<C const (&)[N]>
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: public string_traits<C const*>
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{
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typedef ss_char_a_t value_type;
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typedef ss_char_a_t char_type;
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typedef ss_size_t size_type;
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typedef char_type const const_char_type;
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typedef value_type const* string_type;
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typedef value_type* pointer;
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typedef value_type const* const_pointer;
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};
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# endif /* 0 */
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# endif /* STLSOFT_CF_STATIC_ARRAY_SIZE_DETERMINATION_SUPPORT */
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# endif /* 0 */
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/* C-style Unicode string */
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<ss_char_w_t *>
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{
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typedef ss_char_w_t value_type;
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typedef ss_char_w_t char_type;
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typedef ss_size_t size_type;
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typedef char_type const const_char_type;
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typedef value_type const* string_type;
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typedef value_type* pointer;
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typedef value_type const* const_pointer;
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enum { is_pointer = true };
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enum { is_pointer_to_const = false };
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enum { char_type_size = int(sizeof(char_type)) };
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static string_type empty_string()
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{
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// This character array is initialised to 0, which conveniently happens to
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// be the empty string, by the module/application load, so it is
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// guaranteed to be valid, and there are no threading/race conditions
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static char_type s_empty[1];
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STLSOFT_ASSERT(s_empty[0] == '\0'); // Paranoid check
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return s_empty;
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}
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};
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<ss_char_w_t const*>
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{
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typedef ss_char_w_t value_type;
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typedef ss_char_w_t char_type;
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typedef ss_size_t size_type;
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typedef char_type const const_char_type;
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typedef value_type const* string_type;
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typedef value_type* pointer;
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typedef value_type const* const_pointer;
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enum { is_pointer = true };
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enum { is_pointer_to_const = false };
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enum { char_type_size = int(sizeof(char_type)) };
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static string_type empty_string()
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{
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// This character array is initialised to 0, which conveniently happens to
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// be the empty string, by the module/application load, so it is
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// guaranteed to be valid, and there are no threading/race conditions
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static char_type s_empty[1];
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STLSOFT_ASSERT(s_empty[0] == '\0'); // Paranoid check
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return s_empty;
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}
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};
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/* std::basic_string */
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# ifndef _STLSOFT_STRING_TRAITS_NO_STD_STRING
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# ifdef STLSOFT_CF_TEMPLATE_PARTIAL_SPECIALISATION_SUPPORT
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template <ss_typename_param_k C>
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struct string_traits<stlsoft_ns_qual_std(basic_string)<C> >
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{
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// NOTE: Originally, what is string_type_ was defined as value_type, but
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// Borland objects to value_type::value_type.
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typedef stlsoft_ns_qual_std(basic_string)<C> string_type_;
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typedef ss_typename_type_k string_type_::value_type char_type;
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typedef ss_typename_type_k string_type_::size_type size_type;
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typedef char_type const const_char_type;
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typedef string_type_ string_type;
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typedef string_type_ value_type;
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typedef ss_typename_type_k string_type::pointer pointer;
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typedef ss_typename_type_k string_type::const_pointer const_pointer;
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typedef ss_typename_type_k string_type::iterator iterator;
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typedef ss_typename_type_k string_type::const_iterator const_iterator;
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typedef ss_typename_type_k string_type::reverse_iterator reverse_iterator;
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typedef ss_typename_type_k string_type::const_reverse_iterator const_reverse_iterator;
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enum { is_pointer = false };
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enum { is_pointer_to_const = false };
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enum { char_type_size = sizeof(char_type) };
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static string_type empty_string()
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{
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return string_type();
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}
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static string_type construct(string_type const& src, size_type pos, size_type len)
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{
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return string_type(src, pos, len);
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}
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# ifdef STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT
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template <ss_typename_param_k I>
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static string_type &assign_inplace(string_type& str, I first, I last)
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# else /* ? STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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static string_type &assign_inplace(string_type& str, const_iterator first, const_iterator last)
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# endif /* STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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{
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// std::basic_string cannot assign in-place (or rather not all implementations do so)
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return (str = string_type(first, last), str);
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}
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};
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# else /* ? STLSOFT_CF_TEMPLATE_PARTIAL_SPECIALISATION_SUPPORT */
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# if defined(STLSOFT_CF_std_NAMESPACE)
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<stlsoft_ns_qual_std(basic_string)<ss_char_a_t> >
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{
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typedef stlsoft_ns_qual_std(basic_string)<ss_char_a_t> value_type;
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typedef value_type::value_type char_type;
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typedef value_type::size_type size_type;
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typedef char_type const const_char_type;
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typedef value_type string_type;
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typedef string_type::pointer pointer;
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typedef string_type::const_pointer const_pointer;
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typedef string_type::iterator iterator;
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typedef string_type::const_iterator const_iterator;
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typedef string_type::reverse_iterator reverse_iterator;
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typedef string_type::const_reverse_iterator const_reverse_iterator;
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enum { is_pointer = false };
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enum { is_pointer_to_const = false };
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enum { char_type_size = sizeof(char_type) };
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static string_type empty_string()
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{
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return string_type();
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}
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static string_type construct(string_type const& src, size_type pos, size_type len)
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{
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return string_type(src, pos, len);
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}
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# ifdef STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT
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template <ss_typename_param_k I>
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static string_type &assign_inplace(string_type& str, I first, I last)
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# else /* ? STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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static string_type &assign_inplace(string_type& str, const_iterator first, const_iterator last)
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# endif /* STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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{
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// std::basic_string cannot assign in-place (or rather not all implementations do so)
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return (str = string_type(first, last), str);
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}
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};
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STLSOFT_TEMPLATE_SPECIALISATION
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struct string_traits<stlsoft_ns_qual_std(basic_string)<ss_char_w_t> >
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{
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typedef stlsoft_ns_qual_std(basic_string)<ss_char_w_t> value_type;
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typedef value_type::value_type char_type;
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typedef value_type::size_type size_type;
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typedef char_type const const_char_type;
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typedef value_type string_type;
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typedef string_type::pointer pointer;
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typedef string_type::const_pointer const_pointer;
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typedef string_type::iterator iterator;
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typedef string_type::const_iterator const_iterator;
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typedef string_type::reverse_iterator reverse_iterator;
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typedef string_type::const_reverse_iterator const_reverse_iterator;
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enum { is_pointer = false };
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enum { is_pointer_to_const = false };
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enum { char_type_size = sizeof(char_type) };
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static string_type empty_string()
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{
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return string_type();
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}
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static string_type construct(string_type const& src, size_type pos, size_type len)
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{
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return string_type(src, pos, len);
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}
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# ifdef STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT
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template <ss_typename_param_k I>
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static string_type &assign_inplace(string_type& str, I first, I last)
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# else /* ? STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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static string_type &assign_inplace(string_type& str, const_iterator first, const_iterator last)
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# endif /* STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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{
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// std::basic_string cannot assign in-place (or rather not all implementations do so)
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return (str = string_type(first, last), str);
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}
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};
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# endif /* STLSOFT_CF_std_NAMESPACE */
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# endif /* STLSOFT_CF_TEMPLATE_PARTIAL_SPECIALISATION_SUPPORT */
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# endif /* _STLSOFT_STRING_TRAITS_NO_STD_STRING */
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#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
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////////////////////////////////////////////////////////////////////////////
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// Unit-testing
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#ifdef STLSOFT_UNITTEST
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# include "./unittest/string_traits_unittest_.h"
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#endif /* STLSOFT_UNITTEST */
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/* ////////////////////////////////////////////////////////////////////// */
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#ifndef _STLSOFT_NO_NAMESPACE
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} // namespace stlsoft
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#endif /* _STLSOFT_NO_NAMESPACE */
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/* ////////////////////////////////////////////////////////////////////// */
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#endif /* !STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TRAITS */
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/* ///////////////////////////// end of file //////////////////////////// */
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