+ add feature_parser implementation

include/mapnik/json/feature_parser.hpp

@@ -0,0 +1,57 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2012 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+#ifndef MAPNIK_FEATURE_PARSER_HPP
+#define MAPNIK_FEATURE_PARSER_HPP
+
+// mapnik
+#include <mapnik/config.hpp>
+#include <mapnik/feature.hpp>
+#include <mapnik/noncopyable.hpp>
+#include <mapnik/unicode.hpp>
+
+// boost
+#include <boost/scoped_ptr.hpp>
+
+// stl
+#include <vector>
+
+namespace mapnik { namespace json {
+
+template <typename Iterator, typename FeatureType> struct feature_grammar;
+
+template <typename Iterator>
+class feature_parser : private mapnik::noncopyable
+{
+    typedef Iterator iterator_type;
+    typedef mapnik::feature_impl feature_type;
+public:
+    feature_parser(mapnik::transcoder const& tr);
+    ~feature_parser();
+    bool parse(iterator_type first, iterator_type last, mapnik::feature_impl & f);
+private:
+    boost::scoped_ptr<feature_grammar<iterator_type,feature_type> > grammar_;
+};
+
+}}
+
+#endif //MAPNIK_FEATURE_PARSER_HPP

src/json/feature_parser.cpp

@@ -0,0 +1,63 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2013 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+#include <boost/version.hpp>
+
+#define BOOST_SPIRIT_USE_PHOENIX_V3 1
+
+// mapnik
+#include <mapnik/json/feature_parser.hpp>
+#include <mapnik/json/feature_grammar.hpp>
+
+// boost
+#include <boost/version.hpp>
+#include <boost/spirit/include/qi.hpp>
+
+namespace mapnik { namespace json {
+
+#if BOOST_VERSION >= 104700
+
+    template <typename Iterator>
+    feature_parser<Iterator>::feature_parser(mapnik::transcoder const& tr)
+        : grammar_(new feature_grammar<iterator_type,feature_type>(tr)) {}
+
+    template <typename Iterator>
+    feature_parser<Iterator>::~feature_parser() {}
+#endif
+
+    template <typename Iterator>
+    bool feature_parser<Iterator>::parse(iterator_type first, iterator_type last, mapnik::feature_impl & f)
+    {
+#if BOOST_VERSION >= 104700
+        using namespace boost::spirit;
+        return qi::phrase_parse(first, last, (*grammar_)(boost::phoenix::ref(f)), standard_wide::space);
+#else
+        std::ostringstream s;
+        s << BOOST_VERSION/100000 << "." << BOOST_VERSION/100 % 1000  << "." << BOOST_VERSION % 100;
+        throw std::runtime_error("mapnik::feature_parser::parse() requires at least boost 1.47 while your build was compiled against boost " + s.str());
+        return false;
+#endif
+    }
+
+template class feature_parser<std::string::const_iterator>;
+
+}}