Library-System-Simulation/BSTData.cpp at main · lexical-wiz/Library-System-Simulation · GitHub

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/**
 * @file BSTData.h
 * @author Alex Lambert
 *
 * Description:
 *   - Interface for objects that defines comparison operators to compare
 * data within the Binary Search Trees
 *   - Includes comparison operators (<,<=,>,>=,==,!=)
 *   - Includes no data members
 *
 * Assumptions/Implementation:
 *   - Inheriting classes must implement display and getComp
 *   - Uses getComp to compare BSTDatas of the same derived type
 */

#include "BSTData.h"

//---------------------------------------------------------------------------
/** ~BSTData()
 * Default Destructor
 *
 * Destroys the BSTData
 * @pre None
 * @post All memory used by the BSTData is deallocated
 */
BSTData::~BSTData() { }

//---------------------------------------------------------------------------
/** operator<()
 * Less Than Operator
 *
 * Determines if the left side item is less than the right
 * @pre Both items are of the same type
 * @post None.
 * @return true returned when left is less than right, false otherwise
 */
bool BSTData::operator<(const BSTData& rhs) const
{
    return getComp(rhs) < 0;
}

//---------------------------------------------------------------------------
/** operator<=()
 * Less Than or Equal Operator
 *
 * Determines if the left side item is less than or equal to the right
 * @pre Both items are of the same type
 * @post None.
 * @return true returned when left is less than or equal to the right,
 * false otherwise
 */
bool BSTData::operator<=(const BSTData& rhs) const
{
    return getComp(rhs) <= 0;
}

//---------------------------------------------------------------------------
/** operator>()
 * Greater Than Operator
 *
 * Determines of the left side item is greater than the right
 * @pre Both items are of the same type
 * @post None.
 * @return true returned when left is greater than right, false otherwise
 */
bool BSTData::operator>(const BSTData& rhs) const
{
    return getComp(rhs) > 0;
}

//---------------------------------------------------------------------------
/** operator>=()
 * Greater Than or Equal Operator
 *
 * Determines of the left side item is greater than or equal to the right
 * @pre Both items are of the same type
 * @post None.
 * @return true returned when left is greater than or equal to right,
 * false otherwise
 */
bool BSTData::operator>=(const BSTData& rhs) const
{
    return getComp(rhs) >= 0;
}

//---------------------------------------------------------------------------
/** operator==()
 * Equivalence Operator
 *
 * Determines if the right and left items are equivalent
 * @pre Both items are of the same type
 * @post None.
 * @return true returned when left is equal to right, false otherwise
 */
bool BSTData::operator==(const BSTData& rhs) const
{
    return getComp(rhs) == 0;
}

//---------------------------------------------------------------------------
/** operator==()
 * Non-Equivelence Operator
 *
 * Determines if the right and left items are not equivalent
 * @pre Both items are of the same type
 * @post None.
 * @return true returned when left is not equal to right, false otherwise
 */
bool BSTData::operator!=(const BSTData& rhs) const
{
    return getComp(rhs) != 0;
}