97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2011 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_PATH_EXPRESSIONS_GRAMMAR_HPP
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#define MAPNIK_PATH_EXPRESSIONS_GRAMMAR_HPP
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// mapnik
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#include <mapnik/unicode.hpp>
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#include <mapnik/expression_node.hpp>
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#include <mapnik/feature.hpp>
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// boost
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#include <boost/variant.hpp>
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#include <boost/concept_check.hpp>
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// spirit2
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#include <boost/spirit/include/qi.hpp>
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#include <boost/spirit/include/qi_action.hpp>
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// fusion
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#include <boost/fusion/include/adapt_struct.hpp>
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// phoenix
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#include <boost/spirit/include/phoenix_core.hpp>
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#include <boost/spirit/include/phoenix_object.hpp>
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#include <boost/spirit/include/phoenix_operator.hpp>
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#include <boost/spirit/include/phoenix_function.hpp>
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#include <boost/spirit/include/phoenix_stl.hpp>
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#include <boost/spirit/home/phoenix/object/construct.hpp>
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// stl
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#include <string>
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#include <vector>
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namespace mapnik
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{
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using namespace boost;
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namespace qi = boost::spirit::qi;
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namespace phoenix = boost::phoenix;
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namespace standard_wide = boost::spirit::standard_wide;
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using standard_wide::space_type;
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using standard_wide::space;
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template <typename Iterator>
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struct path_expression_grammar : qi::grammar<Iterator, std::vector<path_component>(), space_type>
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{
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path_expression_grammar()
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: path_expression_grammar::base_type(expr)
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{
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using boost::phoenix::construct;
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using standard_wide::char_;
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using qi::_1;
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using qi::_val;
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using qi::lit;
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using qi::lexeme;
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using phoenix::push_back;
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expr =
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* (
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str [ push_back(_val, _1)]
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( '[' >> attr [ push_back(_val, construct<mapnik::attribute>( _1 )) ] >> ']')
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)
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;
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attr %= +(char_ - ']');
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str %= lexeme[+(char_ -'[')];
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}
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qi::rule<Iterator, std::vector<path_component>() , space_type> expr;
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qi::rule<Iterator, std::string() , space_type> attr;
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qi::rule<Iterator, std::string() > str;
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};
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}
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#endif // MAPNIK_PATH_EXPRESSIONS_GRAMMAR_HPP
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