1/*=============================================================================
2 Copyright (c) 2001-2010 Joel de Guzman
3
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6=============================================================================*/
7#include <boost/spirit/include/qi.hpp>
8#include <boost/spirit/include/qi_copy.hpp>
9#include <boost/spirit/include/support_auto.hpp>
10#include <iostream>
11#include <string>
12
13///////////////////////////////////////////////////////////////////////////////
14// Main program
15///////////////////////////////////////////////////////////////////////////////
16
17int
18main()
19{
20 using boost::spirit::ascii::space;
21 using boost::spirit::ascii::char_;
22 using boost::spirit::qi::parse;
23 typedef std::string::const_iterator iterator_type;
24
25///////////////////////////////////////////////////////////////////////////////
26// this works for non-c++11 compilers
27#ifdef BOOST_NO_CXX11_AUTO_DECLARATIONS
28
29 BOOST_SPIRIT_AUTO(qi, comment, "/*" >> *(char_ - "*/") >> "*/");
30
31///////////////////////////////////////////////////////////////////////////////
32// but this is better for c++11 compilers with auto
33#else
34
35 using boost::spirit::qi::copy;
36
37 auto comment = copy(expr: "/*" >> *(char_ - "*/") >> "*/");
38
39#endif
40
41 std::string str = "/*This is a comment*/";
42 std::string::const_iterator iter = str.begin();
43 std::string::const_iterator end = str.end();
44 bool r = parse(first&: iter, last: end, expr&: comment);
45
46 if (r && iter == end)
47 {
48 std::cout << "-------------------------\n";
49 std::cout << "Parsing succeeded\n";
50 std::cout << "-------------------------\n";
51 }
52 else
53 {
54 std::string rest(iter, end);
55 std::cout << "-------------------------\n";
56 std::cout << "Parsing failed\n";
57 std::cout << "stopped at: \": " << rest << "\"\n";
58 std::cout << "-------------------------\n";
59 }
60
61 return 0;
62}
63
64
65

source code of boost/libs/spirit/example/qi/typeof.cpp