| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.internal.expressions; |
| |
| import org.eclipse.core.expressions.EvaluationResult; |
| import org.eclipse.core.expressions.Expression; |
| import org.eclipse.core.expressions.ExpressionInfo; |
| import org.eclipse.core.expressions.IEvaluationContext; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| |
| public class NotExpression extends Expression { |
| /** |
| * The seed for the hash code for all not expressions. |
| */ |
| private static final int HASH_INITIAL= NotExpression.class.getName().hashCode(); |
| |
| private Expression fExpression; |
| |
| public NotExpression(Expression expression) { |
| Assert.isNotNull(expression); |
| fExpression= expression; |
| } |
| |
| @Override |
| public EvaluationResult evaluate(IEvaluationContext context) throws CoreException { |
| return fExpression.evaluate(context).not(); |
| } |
| |
| @Override |
| public void collectExpressionInfo(ExpressionInfo info) { |
| fExpression.collectExpressionInfo(info); |
| } |
| |
| @Override |
| public boolean equals(final Object object) { |
| if (!(object instanceof NotExpression)) |
| return false; |
| |
| final NotExpression that= (NotExpression)object; |
| return this.fExpression.equals(that.fExpression); |
| } |
| |
| @Override |
| protected int computeHashCode() { |
| return HASH_INITIAL * HASH_FACTOR + fExpression.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder builder = new StringBuilder(getClass().getSimpleName()); |
| builder.append(" [expression="); //$NON-NLS-1$ |
| builder.append(fExpression); |
| builder.append("]"); //$NON-NLS-1$ |
| return builder.toString(); |
| } |
| } |