| /******************************************************************************* |
| * Copyright (c) 2010, 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; |
| |
| /** |
| * A function that obtains a class based on a String |
| */ |
| public final class BooleanFunction extends Function { |
| |
| public BooleanFunction(Expression[] operands) { |
| super(assertLength(operands, 1, 1, KEYWORD_BOOLEAN)); |
| } |
| |
| @Override |
| boolean assertSingleArgumentClass(Object v) { |
| return v instanceof String || v instanceof Boolean; |
| } |
| |
| @Override |
| 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; |
| } |
| |
| @Override |
| public String getOperator() { |
| return KEYWORD_BOOLEAN; |
| } |
| } |