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/*******************************************************************************
* Copyright (c) 2009 Cloudsmith Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Cloudsmith Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.metadata.expression;
import java.util.Iterator;
import org.eclipse.equinox.p2.metadata.expression.IEvaluationContext;
/**
* Comparisons for magnitude.
*/
final class Condition extends Binary {
final Expression ifFalse;
Condition(Expression test, Expression ifTrue, Expression ifFalse) {
super(test, ifTrue);
this.ifFalse = ifFalse;
}
public boolean equals(Object o) {
return super.equals(o) && ifFalse.equals(((Condition) o).ifFalse);
}
public Object evaluate(IEvaluationContext context) {
return lhs.evaluate(context) == Boolean.TRUE ? rhs.evaluate(context) : ifFalse.evaluate(context);
}
public Iterator<?> evaluateAsIterator(IEvaluationContext context) {
return lhs.evaluate(context) == Boolean.TRUE ? rhs.evaluateAsIterator(context) : ifFalse.evaluateAsIterator(context);
}
public int hashCode() {
return super.hashCode() * 31 + ifFalse.hashCode();
}
public void toString(StringBuffer bld, Variable rootVariable) {
super.toString(bld, rootVariable);
bld.append(' ');
bld.append(OPERATOR_ELSE);
bld.append(' ');
appendOperand(bld, rootVariable, ifFalse, getPriority());
}
public int getExpressionType() {
return TYPE_CONDITION;
}
public String getOperator() {
return OPERATOR_IF;
}
public int getPriority() {
return IExpressionConstants.PRIORITY_CONDITION;
}
}
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