Clover coverage report - groovy - 1.0-beta-7
Coverage timestamp: Wed Sep 29 2004 16:55:52 BST
file stats: LOC: 102   Methods: 7
NCLOC: 43   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
NewInstanceMetaMethod.java 0% 0% 0% 0%
coverage
 1   
 /*
 2   
  * $Id: NewInstanceMetaMethod.java,v 1.1 2004/03/25 00:35:19 glaforge Exp $
 3   
  *
 4   
  * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
 5   
  *
 6   
  * Redistribution and use of this software and associated documentation
 7   
  * ("Software"), with or without modification, are permitted provided that the
 8   
  * following conditions are met:
 9   
  *  1. Redistributions of source code must retain copyright statements and
 10   
  * notices. Redistributions must also contain a copy of this document.
 11   
  *  2. Redistributions in binary form must reproduce the above copyright
 12   
  * notice, this list of conditions and the following disclaimer in the
 13   
  * documentation and/or other materials provided with the distribution.
 14   
  *  3. The name "groovy" must not be used to endorse or promote products
 15   
  * derived from this Software without prior written permission of The Codehaus.
 16   
  * For written permission, please contact info@codehaus.org.
 17   
  *  4. Products derived from this Software may not be called "groovy" nor may
 18   
  * "groovy" appear in their names without prior written permission of The
 19   
  * Codehaus. "groovy" is a registered trademark of The Codehaus.
 20   
  *  5. Due credit should be given to The Codehaus - http://groovy.codehaus.org/
 21   
  *
 22   
  * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
 23   
  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 24   
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 25   
  * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
 26   
  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 27   
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 28   
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 29   
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 30   
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 31   
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 32   
  * DAMAGE.
 33   
  *
 34   
  */
 35   
 package org.codehaus.groovy.runtime;
 36   
 
 37   
 import groovy.lang.MetaMethod;
 38   
 
 39   
 import java.lang.reflect.Modifier;
 40   
 
 41   
 /**
 42   
  * A MetaMethod implementation where the underlying method is really a static
 43   
  * helper method on some class but it appears to be an instance method on a class.
 44   
  * 
 45   
  * This implementation is used to add new methods to the JDK writing them as normal
 46   
  * static methods with the first parameter being the class on which the method is added.
 47   
  * 
 48   
  * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 49   
  * @version $Revision: 1.1 $
 50   
  */
 51   
 public class NewInstanceMetaMethod extends MetaMethod {
 52   
 
 53   
     private static final Class[] EMPTY_TYPE_ARRAY = {};
 54   
     
 55   
     private MetaMethod metaMethod;
 56   
     private Class[] logicalParameterTypes;
 57   
 
 58  0
     public NewInstanceMetaMethod(MetaMethod metaMethod) {
 59  0
         super(metaMethod);
 60  0
         this.metaMethod = metaMethod;
 61  0
         Class[] realParameterTypes = metaMethod.getParameterTypes();
 62  0
         int size = realParameterTypes.length;
 63  0
         if (size <= 1) {
 64  0
             logicalParameterTypes = EMPTY_TYPE_ARRAY;
 65   
         }
 66   
         else {
 67  0
             logicalParameterTypes = new Class[--size];
 68  0
             System.arraycopy(realParameterTypes, 1, logicalParameterTypes, 0, size);
 69   
         }
 70   
     }
 71   
 
 72  0
     public Class getDeclaringClass() {
 73  0
         return getBytecodeParameterTypes()[0];
 74   
     }
 75   
 
 76  0
     public boolean isStatic() {
 77  0
         return false;
 78   
     }
 79   
 
 80  0
     public int getModifiers() {
 81   
         // lets clear the static bit
 82  0
         return super.getModifiers() ^ Modifier.STATIC;
 83   
     }
 84   
 
 85  0
     public Class[] getParameterTypes() {
 86  0
         return logicalParameterTypes;
 87   
     }
 88   
 
 89  0
     public Class[] getBytecodeParameterTypes() {
 90  0
         return super.getParameterTypes();
 91   
     }
 92   
 
 93  0
     public Object invoke(Object object, Object[] arguments) throws Exception {
 94   
         // we need to cheat using the type
 95  0
         int size = arguments.length;
 96  0
         Object[] newArguments = new Object[size + 1];
 97  0
         newArguments[0] = object;
 98  0
         System.arraycopy(arguments, 0, newArguments, 1, size);
 99  0
         return metaMethod.invoke(null, newArguments);
 100   
     }
 101   
 }
 102