| 1 | // Copyright (c) 2009 Carl Barron |
|---|---|
| 2 | // |
| 3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | #include <boost/spirit/include/lex.hpp> |
| 7 | #include <boost/spirit/include/lex_lexertl.hpp> |
| 8 | |
| 9 | #include <boost/core/lightweight_test.hpp> |
| 10 | #include <boost/phoenix/core.hpp> |
| 11 | #include <boost/phoenix/function.hpp> |
| 12 | #include <boost/phoenix/operator/self.hpp> |
| 13 | #include <string> |
| 14 | #include <iostream> |
| 15 | |
| 16 | namespace lex = boost::spirit::lex; |
| 17 | namespace phoenix = boost::phoenix; |
| 18 | |
| 19 | /////////////////////////////////////////////////////////////////////////////// |
| 20 | struct square_impl |
| 21 | { |
| 22 | template <class> |
| 23 | struct result { typedef int type; }; |
| 24 | |
| 25 | template <class A> |
| 26 | int operator () (const A &x) const |
| 27 | { return (x) * (x); } |
| 28 | }; |
| 29 | |
| 30 | phoenix::function<square_impl> const square = square_impl(); |
| 31 | |
| 32 | /////////////////////////////////////////////////////////////////////////////// |
| 33 | template <class Lexer> |
| 34 | struct test_tokens : lex::lexer<Lexer> |
| 35 | { |
| 36 | test_tokens() |
| 37 | { |
| 38 | a = "a"; |
| 39 | this->self = a [lex::_val = square(*lex::_start)]; |
| 40 | } |
| 41 | |
| 42 | lex::token_def<int> a; |
| 43 | }; |
| 44 | |
| 45 | struct catch_result |
| 46 | { |
| 47 | template <class Token> |
| 48 | bool operator() (Token const& x) const |
| 49 | { |
| 50 | BOOST_TEST(x.value().which() == 1); |
| 51 | BOOST_TEST(boost::get<int>(x.value()) == 9409); // 9409 == 'a' * 'a' |
| 52 | return true; |
| 53 | } |
| 54 | }; |
| 55 | |
| 56 | /////////////////////////////////////////////////////////////////////////////// |
| 57 | int main() |
| 58 | { |
| 59 | typedef lex::lexertl::token<std::string::iterator |
| 60 | , boost::mpl::vector<int> > token_type; |
| 61 | |
| 62 | std::string in = "a"; |
| 63 | std::string::iterator first(in.begin()); |
| 64 | |
| 65 | test_tokens<lex::lexertl::actor_lexer<token_type> > the_lexer; |
| 66 | BOOST_TEST(lex::tokenize(first, in.end(), the_lexer, catch_result())); |
| 67 | |
| 68 | return boost::report_errors(); |
| 69 | } |
| 70 |