forked from boostorg/range
162 lines
5.2 KiB
C++
Executable File
162 lines
5.2 KiB
C++
Executable File
// Boost.Range library
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//
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// Copyright Thorsten Ottosen 2003-2004. Use, modification and
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// distribution is subject to the Boost Software License, Version
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// For more information, see http://www.boost.org/libs/range/
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//
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#ifndef BOOST_RANGE_DETAIL_IMPLEMENTATION_HELP_HPP
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#define BOOST_RANGE_DETAIL_IMPLEMENTATION_HELP_HPP
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#include <boost/range/config.hpp>
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#include <boost/range/detail/common.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <cstddef>
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#include <string.h>
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#ifndef BOOST_NO_CWCHAR
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#include <wchar.h>
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#endif
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namespace boost
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{
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namespace range_detail
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{
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/////////////////////////////////////////////////////////////////////
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// end() help
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/////////////////////////////////////////////////////////////////////
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inline const char* str_end( const char* s, const char* )
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{
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return s + strlen( s );
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}
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#ifndef BOOST_NO_CWCHAR
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inline const wchar_t* str_end( const wchar_t* s, const wchar_t* )
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{
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return s + wcslen( s );
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}
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#else
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inline const wchar_t* str_end( const wchar_t* s, const wchar_t* )
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{
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if( s == 0 && s[0] == 0 )
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return s;
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while( *++s != 0 )
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;
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return s;
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}
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#endif
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template< typename Char >
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inline Char* str_end( Char* s )
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{
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return (Char*)str_end( s, s );
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}
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template< typename T, std::size_t sz >
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inline T* array_end( T (&array)[sz], int )
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{
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return array + sz;
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}
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template< typename T, std::size_t sz >
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inline const T* array_end( const T (&array)[sz], int )
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{
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return array + sz;
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}
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template< typename T, std::size_t sz >
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inline T* array_end( T (&arrays)[sz], char_or_wchar_t_array_tag )
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{
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return array + sz - 1;
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}
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template< typename T, std::size_t sz >
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inline const T* array_end( const T (&array)[sz], char_or_wchar_t_array_tag )
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{
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return array + sz - 1;
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}
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template< typename T, std::size_t sz >
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inline T* array_end( T (&array)[sz] )
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{
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typedef BOOST_CT_DEDUCED_TYPENAME boost::mpl::if_c< is_same<char,T>::value || is_same<wchar_t,T>::value,
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char_or_wchar_t_array_tag,
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int >::type tag;
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return array_end<T,sz>( array, tag() );
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}
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template< typename T, std::size_t sz >
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inline const T* array_end( const T (&array)[sz] )
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{
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typedef BOOST_CT_DEDUCED_TYPENAME boost::mpl::if_c< is_same<char,T>::value || is_same<wchar_t,T>::value,
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char_or_wchar_t_array_tag,
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int >::type tag;
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return array_end<T,sz>( array, tag() );
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}
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/////////////////////////////////////////////////////////////////////
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// size() help
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/////////////////////////////////////////////////////////////////////
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template< typename Char >
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inline std::size_t str_size( const Char* s )
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{
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return str_end( s ) - s;
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}
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template< typename T, std::size_t sz >
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inline std::size_t array_size( T BOOST_ARRAY_REF[sz], int )
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{
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return sz;
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}
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template< typename T, std::size_t sz >
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inline std::size_t array_size( const T BOOST_ARRAY_REF[sz], int )
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{
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return sz;
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}
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template< typename T, std::size_t sz >
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inline std::size_t array_size( T BOOST_ARRAY_REF[sz], char_or_wchar_t_array_tag )
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{
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return sz - 1;
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}
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template< typename T, std::size_t sz >
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inline std::size_t array_size( const T BOOST_ARRAY_REF[sz], char_or_wchar_t_array_tag )
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{
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return sz - 1;
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}
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template< typename T, std::size_t sz >
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inline std::size_t array_size( T (&array)[sz] )
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{
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typedef BOOST_CT_DEDUCED_TYPENAME boost::mpl::if_c< is_same<char,T>::value || is_same<wchar_t,T>::value,
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char_or_wchar_t_array_tag,
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int >::type tag;
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return array_size<T,sz>( array, tag() );
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}
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template< typename T, std::size_t sz >
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inline std::size_t array_size( const T (&array)[sz] )
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{
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typedef BOOST_CT_DEDUCED_TYPENAME boost::mpl::if_c< is_same<char,T>::value || is_same<wchar_t,T>::value,
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char_or_wchar_t_array_tag,
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int >::type tag;
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return array_size<T,sz>( array, tag() );
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}
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} // namespace 'range_detail'
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} // namespace 'boost'
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#endif
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