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// Copyright (c) 2001-2010 Hartmut Kaiser
//
// 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)
// The purpose of this example is to show, how it is possible to use a lexer
// token definition for two purposes:
//
// . To generate C++ code implementing a static lexical analyzer allowing
// to recognize all defined tokens (this file)
// . To integrate the generated C++ lexer into the /Spirit/ framework.
// (see the file: word_count_static.cpp)
// #define BOOST_SPIRIT_LEXERTL_DEBUG
#include <boost/spirit/include/lex_lexertl.hpp>
#include <boost/spirit/include/lex_generate_static_lexertl.hpp>
#include <fstream>
#include "word_count_tokens.hpp"
using namespace boost::spirit;
///////////////////////////////////////////////////////////////////////////////
//[wc_static_generate_main
int main(int argc, char* argv[])
{
// create the lexer object instance needed to invoke the generator
word_count_tokens<lex::lexertl::lexer<> > word_count; // the token definition
// open the output file, where the generated tokenizer function will be
// written to
std::ofstream out(argc < 2 ? "word_count_static.hpp" : argv[1]);
// invoke the generator, passing the token definition, the output stream
// and the name suffix of the tables and functions to be generated
//
// The suffix "wc" used below results in a type lexertl::static_::lexer_wc
// to be generated, which needs to be passed as a template parameter to the
// lexertl::static_lexer template (see word_count_static.cpp).
return lex::lexertl::generate_static_dfa(word_count, out, "wc") ? 0 : -1;
}
//]
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