ValueParser.hpp

/***************************************************************************
  tag: Peter Soetens  Mon Jan 19 14:11:26 CET 2004  ValueParser.hpp

                        ValueParser.hpp -  description
                           -------------------
    begin                : Mon January 19 2004
    copyright            : (C) 2004 Peter Soetens
    email                : peter.soetens@mech.kuleuven.ac.be

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
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 *   version 2 of the License.                                             *
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#ifndef VALUEPARSER_HPP
#define VALUEPARSER_HPP

#include "parser-types.hpp"
#include "CommonParser.hpp"
#include "PeerParser.hpp"
#include "PropertyParser.hpp"
#include "../AttributeRepository.hpp"

#include <memory>
#include <map>

namespace RTT
{
    class TaskContext;
    namespace detail {
  class ValueParser
  {
    rule_t constant, const_float, const_double, const_int, const_uint, const_bool, named_constant,
      const_string, const_char;
    CommonParser& commonparser;
    PeerParser peerparser;
    PropertyParser propparser;

    // a auto_ptr used only to make sure we don't forget to delete
    // the TaskVariableBase it holds..  Here we store a pointer to
    // the TaskVariableBase for a temporary variable we've just
    // parsed.  If we parse a non-temporary, then we don't need to
    // delete it, as it remains in the values map, however a
    // constant only gets stored temporarily in ret, so this
    // variable makes sure it gets deleted.
    //std::auto_ptr<AttributeBase> deleter;
    // the DataSource we've just parsed..  we only store it and
    // assume that the ProgramParser will do something useful with
    // it.  We don't ever own it, and don't delete it, or set it to
    // 0..
    DataSourceBase::shared_ptr ret;
    // contains the string constant we're parsing ( it has to be
    // parsed char-by-char, because of the way c_escape_ch_p works
    // )..
    std::string mcurstring;

    void seennamedconstant( iter_t begin, iter_t end );
    void seenboolconstant( iter_t begin, iter_t end );
    void seenintconstant( int c );
    void seenuintconstant( unsigned int c ); // RobWork uint -> unsigned int
    void seencharconstant( iter_t c );
    void seenfloatconstant( double c );
    void seendoubleconstant( double c );
    void push_str_char( char c );
    void seenstring();
    void seennull();
    void seenpeer();

      TaskContext* context;
  public:
      ValueParser( TaskContext* tc, CommonParser& cp );

    ~ValueParser();
    void clear();

    rule_t& parser();

    const DataSourceBase::shared_ptr lastParsed() const
      {
        return ret;
      }
  };
}}

#endif