Files
boost_range/include/boost/range/detail/implementation_help.hpp
Thorsten Jørgen Ottosen 6a455033ee *** empty log message ***
[SVN r23240]
2004-06-29 02:50:07 +00:00

162 lines
5.2 KiB
C++
Executable File

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