69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// Copyright (c) 2009 Carl Barron
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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 <string>
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#include <iostream>
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/spirit/include/lex.hpp>
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#include <boost/spirit/include/lex_lexertl.hpp>
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#include <boost/spirit/include/phoenix_core.hpp>
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#include <boost/spirit/include/phoenix_function.hpp>
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namespace lex = boost::spirit::lex;
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namespace phoenix = boost::phoenix;
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///////////////////////////////////////////////////////////////////////////////
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struct square_impl
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{
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template <class>
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struct result { typedef int type; };
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template <class A>
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int operator () (const A &x) const
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{ return (x) * (x); }
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};
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phoenix::function<square_impl> const square = square_impl();
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///////////////////////////////////////////////////////////////////////////////
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template <class Lexer>
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struct test_tokens : lex::lexer<Lexer>
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{
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test_tokens()
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{
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a = "a";
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this->self = a [lex::_val = square(*lex::_start)];
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}
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lex::token_def<int> a;
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};
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struct catch_result
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{
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template <class Token>
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bool operator() (Token const& x) const
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{
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BOOST_TEST(x.value().which() == 1);
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BOOST_TEST(boost::get<int>(x.value()) == 9409); // 9409 == 'a' * 'a'
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return true;
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}
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};
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///////////////////////////////////////////////////////////////////////////////
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int main()
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{
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typedef lex::lexertl::token<std::string::iterator
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, boost::mpl::vector<int> > token_type;
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std::string in = "a";
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std::string::iterator first(in.begin());
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test_tokens<lex::lexertl::actor_lexer<token_type> > the_lexer;
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BOOST_TEST(lex::tokenize(first, in.end(), the_lexer, catch_result()));
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return boost::report_errors();
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}
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