Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/include/boost/xpressive/detail/utility/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

///////////////////////////////////////////////////////////////////////////////
// literals.hpp
//
//  Copyright 2008 Eric Niebler. Distributed under 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)

#ifndef BOOST_XPRESSIVE_DETAIL_UTILITY_LITERALS_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_DETAIL_UTILITY_LITERALS_HPP_EAN_10_04_2005

// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif

#include <boost/config.hpp> // for BOOST_STATIC_CONSTANT
#include <boost/cstdint.hpp> // for BOOST_STATIC_CONSTANT
#include <boost/detail/workaround.hpp>

namespace boost { namespace xpressive { namespace detail
{

///////////////////////////////////////////////////////////////////////////////
// char_literal
//
template<typename Char, boost::intmax_t Ch, boost::intmax_t Wch>
struct char_literal;

template<typename Char, boost::intmax_t Ch>
struct char_literal<Char, Ch, Ch>
{
    BOOST_STATIC_CONSTANT(boost::intmax_t, value = Ch);
};

#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
template<typename Char, boost::intmax_t Ch>
boost::intmax_t const char_literal<Char, Ch, Ch>::value;
#endif

template<typename Ch>
struct string_literal;

template<>
struct string_literal<char>
{
    static BOOST_CONSTEXPR char const *pick(char const *cstr, wchar_t const *)
    {
        return cstr;
    }

    static BOOST_CONSTEXPR char pick(char ch, wchar_t)
    {
        return ch;
    }
};

template<>
struct string_literal<wchar_t>
{
    static BOOST_CONSTEXPR wchar_t const *pick(char const *, wchar_t const *cstr)
    {
        return cstr;
    }

    static BOOST_CONSTEXPR wchar_t pick(char, wchar_t ch)
    {
        return ch;
    }
};

#if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206))

# define BOOST_XPR_CHAR_(Char, ch) ch
# define BOOST_XPR_CSTR_(Char, st) boost::xpressive::detail::string_literal<Char>::pick(st, L##st)

#else

# define BOOST_XPR_CHAR_(Char, ch) boost::xpressive::detail::char_literal<Char, ch, L##ch>::value
# define BOOST_XPR_CSTR_(Char, st) boost::xpressive::detail::string_literal<Char>::pick(st, L##st)

#endif

}}} // namespace boost::xpressive::detail

#endif