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DictField.h

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// $Header: /nfs/slac/g/glast/ground/cvs/xmlUtil/xmlUtil/id/DictField.h,v 1.6 2002/04/05 18:28:44 jrb Exp $

#ifndef XMLUTIL_DICTFIELD_H
#define XMLUTIL_DICTFIELD_H

#include <string>

#include <dom/DOM_Element.hpp>

#include "xmlUtil/id/DictObject.h"

#include "xmlUtil/id/DictConstraints.h"

namespace xmlUtil {
  class DictVisitor;

  class DictField : public DictObject {
  public: 
    DictField(DOM_Element elt);
    ~DictField(){ if (m_constraints) delete m_constraints;};

    const std::string& getName() const {return m_name;}

    bool allowed(unsigned value) const;

    bool accept(DictVisitor* vis) {return vis->visitField(this);}
    DictConstraints* getConstraints() const {return m_constraints;}

    DictField(const DictField& toCopy);
    DictField& operator=(const DictField&);

  private:
    //    friend class IdDict;  // may also need friend IdConverter

    // Build a field which has value constraints
    DictField(const std::string& name, const DictConstraints& constraints)
      :   m_name(name) 
    {m_constraints = new DictConstraints(constraints);}

    // Build a field with no value constraints
    DictField(const std::string& name) : m_constraints(0), m_name(name) {}


    void deepCopy(const DictField& toCopy);

    DictConstraints *m_constraints;
    std::string     m_name;
    
  };       // end DictField class
}          // end xmlUtil namespace

#endif

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