| /******************************************************************************* |
| * Copyright (c) 2009, 2017 Cloudsmith Inc. and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * 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; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| return super.equals(o) && ifFalse.equals(((Condition) o).ifFalse); |
| } |
| |
| @Override |
| public Object evaluate(IEvaluationContext context) { |
| return lhs.evaluate(context) == Boolean.TRUE ? rhs.evaluate(context) : ifFalse.evaluate(context); |
| } |
| |
| @Override |
| public Iterator<?> evaluateAsIterator(IEvaluationContext context) { |
| return lhs.evaluate(context) == Boolean.TRUE ? rhs.evaluateAsIterator(context) : ifFalse.evaluateAsIterator(context); |
| } |
| |
| @Override |
| public int hashCode() { |
| return super.hashCode() * 31 + ifFalse.hashCode(); |
| } |
| |
| @Override |
| public void toString(StringBuffer bld, Variable rootVariable) { |
| super.toString(bld, rootVariable); |
| bld.append(' '); |
| bld.append(OPERATOR_ELSE); |
| bld.append(' '); |
| appendOperand(bld, rootVariable, ifFalse, getPriority()); |
| } |
| |
| @Override |
| public int getExpressionType() { |
| return TYPE_CONDITION; |
| } |
| |
| @Override |
| public String getOperator() { |
| return OPERATOR_IF; |
| } |
| |
| @Override |
| public int getPriority() { |
| return IExpressionConstants.PRIORITY_CONDITION; |
| } |
| } |