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/*=============================================================================
    Copyright (c) 2001-2007 Hartmut Kaiser
    Copyright (c) 2001-2003 Daniel Nuffer
    http://spirit.sourceforge.net/

    Use, modification and distribution is subject to the Boost Software
    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
    http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/

#if !defined(TREE_TO_XML_HPP)
#define TREE_TO_XML_HPP

namespace boost { namespace spirit {

    namespace impl {
        template <typename CharT> struct default_string;
    }
    
///////////////////////////////////////////////////////////////////////////////
//
//  Dump a parse tree as a xml stream
//
//      The functions 'tree_to_xml' can be used to output a parse tree as a xml
//      stream into the given ostream. The parameters have the following
//      meaning:
//
//  mandatory parameters:
//      ostrm       The output stream used for streaming the parse tree.
//      tree        The parse tree to output.
//
//  optional parameters:
//      input_line  The input line from which the parse tree was
//                  generated (if given, it is used to output a comment
//                  containing this line).
//      id_to_name  A map, which is used for converting the rule id's contained
//                  in the parse tree to readable strings. Here a auxiliary
//                  associative container can be used, which maps a rule_id to
//                  a std::string (i.e. a std::map<rule_id, std::string>).
//      get_token_id
//                  A function or functor, which takes an instance of a token
//                  and which should return a token id (i.e. something like
//                  'int f(char const c)').
//      get_token_value
//                  A function or functor, which takes an instance of a token
//                  and which should return a readable representation of this
//                  token (i.e. something like 'std::string f(char const c)').
//
//  The structure of the generated xml stream conforms to the DTD given in the
//  file 'parsetree.dtd'. This file is located in the spirit/tree directory.
//
///////////////////////////////////////////////////////////////////////////////

    template <
        typename CharT, typename TreeNodeT, typename AssocContainerT,
        typename GetIdT, typename GetValueT
    >
    inline void 
    basic_tree_to_xml (std::basic_ostream<CharT> &ostrm, TreeNodeT const &tree,
        std::basic_string<CharT> const &input_line, 
        AssocContainerT const& id_to_name, GetIdT const &get_token_id, 
        GetValueT const &get_token_value);

    template <typename CharT, typename TreeNodeT, typename AssocContainerT>
    inline void 
    basic_tree_to_xml (std::basic_ostream<CharT> &ostrm, TreeNodeT const &tree,
        std::basic_string<CharT> const &input_line, 
        AssocContainerT const& id_to_name);

    template <typename CharT, typename TreeNodeT>
    inline void 
    basic_tree_to_xml (std::basic_ostream<CharT> &ostrm, TreeNodeT const &tree,
        std::basic_string<CharT> const &input_line = 
            impl::default_string<CharT>::get());

    ///////////////////////////////////////////////////////////////////////////
    template <
        typename TreeNodeT, typename AssocContainerT,
        typename GetIdT, typename GetValueT
    >
    inline void 
    tree_to_xml (std::ostream &ostrm, TreeNodeT const &tree,
        std::string const &input_line, AssocContainerT const& id_to_name, 
        GetIdT const &get_token_id, GetValueT const &get_token_value)
    {
        basic_tree_to_xml<char>(ostrm, tree, input_line, id_to_name, 
            get_token_id, get_token_value);
    }

    template <typename TreeNodeT, typename AssocContainerT>
    inline void 
    tree_to_xml (std::ostream &ostrm, TreeNodeT const &tree,
        std::string const &input_line, AssocContainerT const& id_to_name)
    {
        basic_tree_to_xml<char>(ostrm, tree, input_line, id_to_name);
    }
    
    template <typename TreeNodeT>
    inline void 
    tree_to_xml (std::ostream &ostrm, TreeNodeT const &tree,
        std::string const &input_line = "")
    {
        basic_tree_to_xml<char>(ostrm, tree, input_line);
    }

}} // namespace boost::spirit

#include <boost/spirit/tree/impl/tree_to_xml.ipp>

#endif // !defined(TREE_TO_XML_HPP)
tree_to_xml.hpp
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