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165 lines
3.7 KiB
165 lines
3.7 KiB
// Boost.Range library
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//
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// Copyright Thorsten Ottosen 2006. 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_AS_LITERAL_HPP
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#define BOOST_RANGE_AS_LITERAL_HPP
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#include <boost/range/iterator_range.hpp>
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#include <boost/range/detail/str_types.hpp>
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#include <boost/detail/workaround.hpp>
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#include <cstring>
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#if !defined(BOOST_NO_CXX11_CHAR16_T) || !defined(BOOST_NO_CXX11_CHAR32_T)
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#include <string> // for std::char_traits
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#endif
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#ifndef BOOST_NO_CWCHAR
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#include <cwchar>
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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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inline std::size_t length( const char* s )
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{
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return strlen( s );
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}
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#ifndef BOOST_NO_CXX11_CHAR16_T
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inline std::size_t length( const char16_t* s )
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{
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return std::char_traits<char16_t>::length( s );
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}
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#endif
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#ifndef BOOST_NO_CXX11_CHAR32_T
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inline std::size_t length( const char32_t* s )
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{
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return std::char_traits<char32_t>::length( s );
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}
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#endif
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#ifndef BOOST_NO_CWCHAR
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inline std::size_t length( const wchar_t* s )
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{
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return wcslen( s );
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}
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#endif
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//
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// Remark: the compiler cannot choose between T* and T[sz]
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// overloads, so we must put the T* internal to the
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// unconstrained version.
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//
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inline bool is_char_ptr( char* )
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{
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return true;
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}
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inline bool is_char_ptr( const char* )
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{
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return true;
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}
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#ifndef BOOST_NO_CXX11_CHAR16_T
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inline bool is_char_ptr( char16_t* )
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{
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return true;
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}
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inline bool is_char_ptr( const char16_t* )
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{
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return true;
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}
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#endif
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#ifndef BOOST_NO_CXX11_CHAR32_T
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inline bool is_char_ptr( char32_t* )
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{
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return true;
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}
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inline bool is_char_ptr( const char32_t* )
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{
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return true;
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}
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#endif
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#ifndef BOOST_NO_CWCHAR
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inline bool is_char_ptr( wchar_t* )
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{
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return true;
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}
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inline bool is_char_ptr( const wchar_t* )
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{
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return true;
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}
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#endif
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template< class T >
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inline long is_char_ptr( const T& /* r */ )
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{
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return 0L;
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}
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template< class T >
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inline iterator_range<T*>
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make_range( T* const r, bool )
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{
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return iterator_range<T*>( r, r + length(r) );
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}
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template< class T >
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inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<T>::type>
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make_range( T& r, long )
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{
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return boost::make_iterator_range( r );
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}
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}
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template< class Range >
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inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<Range>::type>
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as_literal( Range& r )
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{
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return range_detail::make_range( r, range_detail::is_char_ptr(r) );
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}
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template< class Range >
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inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type>
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as_literal( const Range& r )
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{
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return range_detail::make_range( r, range_detail::is_char_ptr(r) );
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}
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template< class Char, std::size_t sz >
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inline iterator_range<Char*> as_literal( Char (&arr)[sz] )
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{
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return range_detail::make_range( arr, range_detail::is_char_ptr(arr) );
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}
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template< class Char, std::size_t sz >
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inline iterator_range<const Char*> as_literal( const Char (&arr)[sz] )
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{
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return range_detail::make_range( arr, range_detail::is_char_ptr(arr) );
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}
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}
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#endif
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