| // 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 |