package com.sap.runlet.abstractinterpreter.util;
public class Tuple {
public static class Pair<A, B> {
private A a;
private B b;
private int hashCode;
public Pair( A a, B b ) {
this.a = a;
this.b = b;
hashCode = 0;
}
public void setA( A a ) {
this.a = a;
hashCode = 0;
}
public A getA( ) {
return a;
}
public void setB( B b ) {
this.b = b;
hashCode = 0;
}
public B getB( ) {
return b;
}
@Override
public int hashCode( ) {
if ( hashCode == 0 ) {
hashCode = 17;
hashCode = 37 * hashCode + ( a != null ? a.hashCode( ) : 0 );
hashCode = 37 * hashCode + ( b != null ? b.hashCode( ) : 0 );
}
return hashCode;
}
@Override
public boolean equals( Object obj ) {
boolean result;
if ( this == obj ) {
result = true;
} else if ( obj instanceof Pair<?, ?> ) {
Pair<?, ?> pair = (Pair<?, ?>) obj;
result = ( this.a != null && this.a.equals( pair.a ) || this.a == null && pair.a == null ) && ( this.b != null && this.b.equals( pair.b ) || this.b == null && pair.b == null );
} else {
result = false;
}
return result;
}
@Override
public String toString( ) {
return "[" + (a==null?"null":a.toString( )) + ", " +
(b==null?"null":b.toString( )) + "]"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
}
public static class Triple<A, B, C> {
private A a;
private B b;
private C c;
private int hashCode;
public Triple( A a, B b, C c ) {
this.a = a;
this.b = b;
this.c = c;
hashCode = 0;
}
public void setA( A a ) {
this.a = a;
hashCode = 0;
}
public A getA( ) {
return a;
}
public void setB( B b ) {
this.b = b;
hashCode = 0;
}
public B getB( ) {
return b;
}
public void setC( C c ) {
this.c = c;
hashCode = 0;
}
public C getC( ) {
return c;
}
@Override
public int hashCode( ) {
if ( hashCode == 0 ) {
hashCode = 17;
hashCode = 37 * hashCode + ( a != null ? a.hashCode( ) : 0 );
hashCode = 37 * hashCode + ( b != null ? b.hashCode( ) : 0 );
hashCode = 37 * hashCode + ( c != null ? c.hashCode( ) : 0 );
}
return hashCode;
}
@Override
public boolean equals( Object obj ) {
boolean result;
if ( this == obj ) {
result = true;
} else if ( obj instanceof Triple<?, ?, ?> ) {
Triple<?, ?, ?> thrice = (Triple<?, ?, ?>) obj;
result = ( this.a != null && this.a.equals( thrice.a ) || this.a == null && thrice.a == null ) && ( this.b != null && this.b.equals( thrice.b ) || this.b == null && thrice.b == null ) && ( this.c != null && this.c.equals( thrice.c ) || this.c == null && thrice.c == null );
} else {
result = false;
}
return result;
}
@Override
public String toString( ) {
return "[" + a.toString( ) + ", " + b.toString( ) + ", " + c.toString( ) + "]"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
}
}