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- // Copyright (c) 2001-2011 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)
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/spirit/include/lex_lexertl.hpp>
- #include "test.hpp"
- ///////////////////////////////////////////////////////////////////////////////
- int main()
- {
- using namespace boost::spirit;
- using namespace boost::spirit::lex;
- using namespace spirit_test;
- // initialize tokens
- typedef lex::token_def<std::string> token_def;
- std::size_t const CCOMMENT = 1;
- std::size_t const CPPCOMMENT = 2;
- token_def c_comment ("\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\/", CCOMMENT);
- token_def cpp_comment ("\\/\\/[^\\n\\r]*(\\n|\\r|\\r\\n)", CPPCOMMENT);
- typedef std::string::iterator base_iterator_type;
- typedef lex::lexertl::token<base_iterator_type> token_type;
- typedef lex::lexertl::lexer<token_type> lexer_type;
- typedef lex::lexer<lexer_type> lexer_def;
- {
- // initialize lexer
- std::string str("def");
- token_def ws_tok ("[\\v\\f\\n\\r]+");
- lexer_def lex;
- lex.self = c_comment;
- lex.self += cpp_comment | '1' | '2' | '3' | "abc" | str;
- lex.self += token_def(' ') | '\t' | ws_tok;
- // test lexer for two different input strings
- BOOST_TEST(test (lex, "/* this is a comment */", CCOMMENT));
- BOOST_TEST(test (lex, "// this is a comment as well\n", CPPCOMMENT));
- BOOST_TEST(test (lex, "\n\n\v\f\r", ws_tok.id()));
- BOOST_TEST(test (lex, " ", ' '));
- BOOST_TEST(test (lex, "2", '2'));
- BOOST_TEST(test (lex, "abc"));
- BOOST_TEST(test (lex, "def"));
- }
- {
- // initialize lexer
- lexer_def lex;
- token_def ws_tok ("[\\v\\f\\n\\r]+");
- lex.self = c_comment;
- lex.self += cpp_comment | '1' | '2' | '3';
- lex.self("WHITESPACE") = token_def(' ') | '\t' | ws_tok;
- // test lexer for two different input strings
- BOOST_TEST(test (lex, "/* this is a comment */", CCOMMENT));
- BOOST_TEST(test (lex, "// this is a comment as well\n", CPPCOMMENT));
- BOOST_TEST(test (lex, "2", '2'));
- BOOST_TEST(!test (lex, "\n\n\v\f\r", ws_tok.id()));
- BOOST_TEST(test (lex, " ", ' ', "WHITESPACE"));
- BOOST_TEST(test (lex, "\n\n\v\f\r", ws_tok.id(), "WHITESPACE"));
- }
- return boost::report_errors();
- }
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