/*******************************************************************************
* Copyright (c) 2007 IBM Corporation 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:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.ui.internal.expressions;
import org.eclipse.core.expressions.EvaluationResult;
import org.eclipse.core.expressions.Expression;
import org.eclipse.core.expressions.IEvaluationContext;
/**
* An expression that simply returns <code>true</code> at all times. A shared
* instance of this expression is provided.
*
*
*/
public final class AlwaysEnabledExpression extends Expression {
public static final AlwaysEnabledExpression INSTANCE = new AlwaysEnabledExpression();
/**
* Not to be instantiated
*/
private AlwaysEnabledExpression() {
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.expressions.Expression#evaluate(org.eclipse.core.expressions.IEvaluationContext)
*/
public EvaluationResult evaluate(IEvaluationContext context) {
return EvaluationResult.TRUE;
}
}