108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
// Copyright (c) 2001-2011 Hartmut Kaiser
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/spirit/include/lex_lexertl.hpp>
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#include "test.hpp"
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///////////////////////////////////////////////////////////////////////////////
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// test pattern definition capabilities
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int main()
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{
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using namespace boost::spirit;
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using namespace boost::spirit::lex;
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using namespace spirit_test;
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// initialize tokens
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typedef lex::token_def<std::string> token_def;
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std::size_t const CCOMMENT = 1;
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std::size_t const CPPCOMMENT = 2;
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std::size_t const TOKEN_ID_ABC = 1000;
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std::size_t const TOKEN_ID_STR = 1001;
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std::size_t const TOKEN_ID_WS = 1002;
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typedef std::string::iterator base_iterator_type;
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typedef lex::lexertl::token<base_iterator_type> token_type;
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typedef lex::lexertl::lexer<token_type> lexer_type;
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typedef lex::lexer<lexer_type> lexer_def;
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std::string str("def");
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{
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// initialize lexer
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lexer_def lex;
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lex.self.add_pattern
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("CCOMMENT", "\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\/")
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("CPPCOMMENT", "\\/\\/[^\\n\\r]*(\\n|\\r|\\r\\n)")
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("WS", "[\\v\\f\\n\\r]+")
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;
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token_def c_comment ("{CCOMMENT}", CCOMMENT);
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token_def cpp_comment ("{CPPCOMMENT}", CPPCOMMENT);
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token_def ws_tok ("{WS}");
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lex.self.add
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(c_comment)(cpp_comment)
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('1')('2')('3')
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("abc", TOKEN_ID_ABC)
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(str, TOKEN_ID_STR)
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;
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lex.self += token_def(' ') | '\t' | ws_tok;
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// test lexer for different input strings
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BOOST_TEST(test (lex, "/* this is a comment */", CCOMMENT));
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BOOST_TEST(test (lex, "// this is a comment as well\n", CPPCOMMENT));
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BOOST_TEST(test (lex, "\n\n\v\f\r", ws_tok.id()));
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BOOST_TEST(test (lex, " ", ' '));
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BOOST_TEST(test (lex, "2", '2'));
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BOOST_TEST(test (lex, "abc", TOKEN_ID_ABC));
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BOOST_TEST(test (lex, "def", TOKEN_ID_STR));
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}
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{
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// initialize lexer
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lexer_def lex;
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lex.self.add_pattern
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("CCOMMENT", "\\/\\*[^*]*\\*+([^/*][^*]*\\*+)*\\/")
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("CPPCOMMENT", "\\/\\/[^\\n\\r]*(\\n|\\r|\\r\\n)")
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("WS", "[\\v\\f\\n\\r]+")
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;
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token_def c_comment ("{CCOMMENT}", CCOMMENT);
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token_def cpp_comment ("{CPPCOMMENT}", CPPCOMMENT);
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token_def ws_tok ("{WS}");
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// init lexer
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lex.self.add
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(c_comment)(cpp_comment)
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('1')('2')('3')
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("abc", TOKEN_ID_ABC)
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(str, TOKEN_ID_STR)
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;
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lex.self("WHITESPACE").add
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(' ')('\t')
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(ws_tok, TOKEN_ID_WS)
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;
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// test lexer for different input strings
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BOOST_TEST(test (lex, "/* this is a comment */", CCOMMENT));
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BOOST_TEST(test (lex, "// this is a comment as well\n", CPPCOMMENT));
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BOOST_TEST(test (lex, "2", '2'));
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BOOST_TEST(test (lex, "abc", TOKEN_ID_ABC));
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BOOST_TEST(test (lex, "def", TOKEN_ID_STR));
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BOOST_TEST(!test (lex, "\n\n\v\f\r", TOKEN_ID_WS));
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BOOST_TEST(test (lex, " ", ' ', "WHITESPACE"));
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BOOST_TEST(test (lex, "\n\n\v\f\r", TOKEN_ID_WS, "WHITESPACE"));
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}
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return boost::report_errors();
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}
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