The Simons     Component Library

           

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NoElements.h

//
//  SCL : Simons Component Library
//
//
//  Filename:   NoElements.h
//  Contents:   NoElements class, signalling invalid access
//  Author:     Anthony J H Simons
//  Revised:    30 November 2005

// This software is distributed free in the hope that others will
// find it useful.  However, it comes WITHOUT ANY WARRANTY.  No
// liability can be accepted for software failure, merchantability
// or fitness for a particular purpose.  You can redistribute this
// software in its original form, or in a modified form, provided
// that this disclaimer is retained in the file banner.

#ifndef SCL_NO_ELEMENTS
#define SCL_NO_ELEMENTS

#include "MethodError.h"        // Include my superclass type
#include "NoElementsID.h"       // Include my pointer type

#include "StringID.h"           // Depend on the pointer type


class NoElements : public MethodError {
protected:
        ObjectID defaultElement;        
        NoElements(const NoElements&);
public:
        NoElements();
        virtual ~NoElements();
        NoElements(ObjectID, StringID);
        NoElements(ObjectID, StringID, ObjectID);
        virtual ObjectID clone() const;
        ObjectID element() const;
};


inline ObjectID NoElements::element() const { return defaultElement; }



inline NoElementsID::NoElementsID() {}

inline NoElementsID::~NoElementsID() {}

inline NoElementsID::NoElementsID(const Null* null) :
        MethodErrorID(null) {}
        
inline NoElementsID::NoElementsID(const NoElements* exception) :
        MethodErrorID(exception) {}
        
inline NoElementsID::NoElementsID(const NoElementsID& pointer) :
        MethodErrorID(pointer) {}
        
inline NoElementsID& NoElementsID::operator=(const NoElements* exception) {
        assign(exception);
        return *this;
}

inline NoElementsID& NoElementsID::operator=(const NoElementsID& pointer) {
        assign(pointer);
        return *this;
}


#endif

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