| /******************************************************************************* |
| * 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.ql.expression; |
| |
| /** |
| * A function that obtains a class based on a String |
| */ |
| final class BooleanFunction extends Function { |
| |
| public BooleanFunction(Expression[] operands) { |
| super(assertLength(operands, 1, 1, KEYWORD_BOOLEAN)); |
| assertNotCollection(operands[0], "parameter"); //$NON-NLS-1$ |
| } |
| |
| boolean assertSingleArgumentClass(Object v) { |
| return v instanceof String || v instanceof Boolean; |
| } |
| |
| Object createInstance(Object arg) { |
| if (arg instanceof String) |
| return Boolean.valueOf("true".equalsIgnoreCase((String) arg)); //$NON-NLS-1$ |
| if (arg instanceof Boolean) |
| return arg; |
| return Boolean.FALSE; |
| } |
| |
| String getOperator() { |
| return KEYWORD_BOOLEAN; |
| } |
| } |
