| /* |
| * $Id$ |
| * |
| * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. |
| * |
| * Redistribution and use of this software and associated documentation |
| * ("Software"), with or without modification, are permitted provided that the |
| * following conditions are met: |
| * 1. Redistributions of source code must retain copyright statements and |
| * notices. Redistributions must also contain a copy of this document. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name "groovy" must not be used to endorse or promote products |
| * derived from this Software without prior written permission of The Codehaus. |
| * For written permission, please contact info@codehaus.org. |
| * 4. Products derived from this Software may not be called "groovy" nor may |
| * "groovy" appear in their names without prior written permission of The |
| * Codehaus. "groovy" is a registered trademark of The Codehaus. |
| * 5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/ |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| */ |
| package org.codehaus.groovy.runtime; |
| |
| import groovy.lang.MetaMethod; |
| |
| /** |
| * A MetaMethod implementation where the underlying method is really a static |
| * helper method on some class. |
| * |
| * This implementation is used to add new static methods to the JDK writing them as normal |
| * static methods with the first parameter being the class on which the method is added. |
| * |
| * @author Guillaume Laforge |
| * @version $Revision$ |
| */ |
| public class NewStaticMetaMethod extends MetaMethod { |
| |
| private static final Class[] EMPTY_TYPE_ARRAY = {}; |
| |
| private MetaMethod metaMethod; |
| private Class[] logicalParameterTypes; |
| |
| public NewStaticMetaMethod(MetaMethod metaMethod) { |
| super(metaMethod); |
| this.metaMethod = metaMethod; |
| init(); |
| } |
| |
| public NewStaticMetaMethod(String name, Class declaringClass, Class[] parameterTypes, Class returnType, int modifiers) { |
| super(name, declaringClass, parameterTypes, returnType, modifiers); |
| this.metaMethod = new MetaMethod(name, declaringClass, parameterTypes,returnType, modifiers); |
| init(); |
| } |
| |
| private void init() { |
| Class[] realParameterTypes = metaMethod.getParameterTypes(); |
| int size = realParameterTypes!=null ? realParameterTypes.length : 0; |
| if (size <= 1) { |
| logicalParameterTypes = EMPTY_TYPE_ARRAY; |
| } else { |
| logicalParameterTypes = new Class[--size]; |
| System.arraycopy(realParameterTypes, 1, logicalParameterTypes, 0, size); |
| } |
| } |
| |
| public Class getDeclaringClass() { |
| return getBytecodeParameterTypes()[0]; |
| } |
| |
| public boolean isStatic() { |
| return true; |
| } |
| |
| public int getModifiers() { |
| return super.getModifiers(); |
| } |
| |
| public Class[] getParameterTypes() { |
| return logicalParameterTypes; |
| } |
| |
| public Class[] getBytecodeParameterTypes() { |
| return super.getParameterTypes(); |
| } |
| |
| public Object invoke(Object object, Object[] arguments) { |
| int size = arguments.length; |
| Object[] newArguments = new Object[size + 1]; |
| System.arraycopy(arguments, 0, newArguments, 1, size); |
| newArguments[0] = null; |
| return metaMethod.invoke(null, newArguments); |
| } |
| } |