ruleEvaluator.h

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// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2:
//
// $Id: ruleEvaluator.h,v 1.16 2005/12/23 17:01:52 amoll Exp $
//

// Molecular Mechanics: rule-based assignment of properties (typenames, charges, radii, etc.)

#ifndef BALL_MOLMEC_COMMON_RULEEVALUATOR_H
#define BALL_MOLMEC_COMMON_RULEEVALUATOR_H

#ifndef BALL_DATATYPE_STRINGHASHMAP_H
# include <BALL/DATATYPE/stringHashMap.h>
#endif

#ifndef BALL_KERNEL_EXPRESSION_H
# include <BALL/KERNEL/expression.h>
#endif

#include <list>
#include <utility>

namespace BALL 
{
  class INIFile;

  class BALL_EXPORT RuleEvaluator
  {
    public:

    BALL_CREATE(RuleEvaluator)

    

    typedef std::list<std::pair<Expression, String> > RuleList;

    typedef StringHashMap<RuleList> RuleMap;



    RuleEvaluator() ;
      
    RuleEvaluator(INIFile& file, const String& prefix) ;
      
    RuleEvaluator(const RuleEvaluator& evaluator) ;

    virtual ~RuleEvaluator() ;



    bool initialize(INIFile& file, const String& prefix) ;

    const String& getPrefix() const ;
      
    void setPrefix(const String& prefix) ;
      

      
    const RuleEvaluator& operator = (const RuleEvaluator& evaluator)
    ;

    virtual void clear() ;


      
    String operator () (const Atom& atom) const ;

    bool operator == (const RuleEvaluator& evaluator) const ;



    bool isValid() const ;

    void dump(std::ostream& s = std::cout, Size indent_depth = 0) const
    ;


    protected:

    //_ parse the section with name: predicate_ + ":" + symbol of file
    void extractSection_(INIFile& file, const String& symbol) ;

    //_ The INI file section prefix
    String    prefix_;

    //_ The map relating an element name and the corresponding list of expressions
    RuleMap   rule_map_;

    //_ 
    bool      valid_;
    
  };
} // namespace BALL


#endif // BALL_MOLMEC_COMMON_RULEEVALUATOR_H