ValueChangeParser.hpp

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

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

 ***************************************************************************
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#ifndef VALUECHANGEPARSER_HPP
#define VALUECHANGEPARSER_HPP

#include "parser-types.hpp"

#include "../Attribute.hpp"
#include "CommonParser.hpp"
#include "ExpressionParser.hpp"
#include "PeerParser.hpp"
#include "PropertyParser.hpp"
#include "../types/Types.hpp"
#include "../Service.hpp"

namespace RTT { namespace scripting
{
  class ValueChangeParser
  {
      // all the AssignVariableCommand we've built..
      // This list is cleared in cleanup().
      std::vector<base::ActionInterface*> assigncommands;

      // the defined values...
      // This list is cleared in cleanup().
      std::vector<base::AttributeBase*> definedvalues;

      // the parsed variable or constant or alias or param
      // definition name.
      // This list is cleared in cleanup().
      std::vector<std::string> definednames;

      // A list of all the names stored in \a context.
      // this list is used to remove them when reset() is
      // called.
      std::vector<std::string> alldefinednames;

    // the name of the value of which we're currently parsing the
    // definition or assignment..
    std::string valuename;

    // A types::TypeInfo of the type that was specified.  We use it to get
    // hold of a Constant or a TaskVariable or ...
    types::TypeInfo* type;

    void seenconstantdefinition();
    void seenaliasdefinition();
    void seenvariabledefinition();
    void seenbaredefinition();
    void seenparamdefinition();
    void storedefinitionname( iter_t begin, iter_t end );
    void seentype( iter_t begin, iter_t end );
    void seensizehint();
    void seenproperty();

    rule_t constantdefinition, aliasdefinition, variabledefinition,
        paramdefinition, baredefinition,
        vardecl, constdecl, baredecl,
        valuechange_parsers;

      TaskContext* context;
      Service::shared_ptr mstore;
      ExpressionParser expressionparser;
      CommonParser& commonparser;

      int sizehint;
      boost::shared_ptr<types::TypeInfoRepository> typerepos;

      void cleanup();
  public:
      ValueChangeParser( TaskContext* tc, CommonParser& cp,
                         Service::shared_ptr storage,
                         ExecutionEngine* caller);

      void clear();

      void store( Service::shared_ptr other );

      void load( Service::shared_ptr source );

    base::ActionInterface* assignCommand()
      {
          if ( assigncommands.empty() )
              return 0;
          return assigncommands.back();
      }

    std::vector<base::ActionInterface*> assignCommands()
      {
          return assigncommands;
      }

    base::AttributeBase* lastDefinedValue()
      {
          if ( definedvalues.empty() )
              return 0;
          return definedvalues.back();
      }

    std::vector<base::AttributeBase*> definedValues()
      {
          return definedvalues;
      }

    std::string lastDefinedName()
      {
          if ( definednames.empty() )
              return "";
          return definednames.back();
      }

    std::vector<std::string> definedNames()
      {
          return definednames;
      }

    std::vector<std::string> allDefinedNames()
      {
          return alldefinednames;
      }

    rule_t& parser();

    rule_t& constantDefinitionParser();

    rule_t& variableDefinitionParser();

    rule_t& aliasDefinitionParser();

    rule_t& paramDefinitionParser();

    rule_t& bareDefinitionParser();

    void reset();
  };
}}

#endif