// consts.h | |
// Copyright (c) 2007-2009 Ben Hanson (http://www.benhanson.net/) | |
// | |
// Distributed under the Boost Software License, Version 1.0. (See accompanying | |
// file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
#ifndef BOOST_LEXER_CONSTS_H | |
#define BOOST_LEXER_CONSTS_H | |
#include <boost/config.hpp> | |
#include <boost/integer_traits.hpp> | |
#include "size_t.hpp" | |
namespace boost | |
{ | |
namespace lexer | |
{ | |
enum regex_flags {none = 0, icase = 1, dot_not_newline = 2}; | |
// 0 = end state, 1 = id, 2 = unique_id, 3 = lex state, 4 = bol, 5 = eol, | |
// 6 = dead_state_index | |
enum {end_state_index, id_index, unique_id_index, state_index, bol_index, | |
eol_index, dead_state_index, dfa_offset}; | |
const std::size_t max_macro_len = 30; | |
const std::size_t num_chars = 256; | |
// If sizeof(wchar_t) == sizeof(size_t) then don't overflow to 0 | |
// by adding one to comparison. | |
const std::size_t num_wchar_ts = | |
(boost::integer_traits<wchar_t>::const_max < 0x110000) ? | |
boost::integer_traits<wchar_t>::const_max + | |
static_cast<std::size_t> (1) : 0x110000; | |
const std::size_t null_token = static_cast<std::size_t> (~0); | |
const std::size_t bol_token = static_cast<std::size_t> (~1); | |
const std::size_t eol_token = static_cast<std::size_t> (~2); | |
const std::size_t end_state = 1; | |
const std::size_t npos = static_cast<std::size_t> (~0); | |
} | |
} | |
#endif |