Clover coverage report - groovy - 1.0-beta-6
Coverage timestamp: Thu Jul 15 2004 13:18:22 BST
file stats: LOC: 199   Methods: 9
NCLOC: 108   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
BuilderSupport.java 0% 0% 0% 0%
coverage
 1   
 /*
 2   
  $Id: BuilderSupport.java,v 1.6 2004/04/27 08:13:11 spullara 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
 8   
  that the following conditions are met:
 9   
 
 10   
  1. Redistributions of source code must retain copyright
 11   
     statements and notices.  Redistributions must also contain a
 12   
     copy of this document.
 13   
 
 14   
  2. Redistributions in binary form must reproduce the
 15   
     above copyright notice, this list of conditions and the
 16   
     following disclaimer in the documentation and/or other
 17   
     materials provided with the distribution.
 18   
 
 19   
  3. The name "groovy" must not be used to endorse or promote
 20   
     products derived from this Software without prior written
 21   
     permission of The Codehaus.  For written permission,
 22   
     please contact info@codehaus.org.
 23   
 
 24   
  4. Products derived from this Software may not be called "groovy"
 25   
     nor may "groovy" appear in their names without prior written
 26   
     permission of The Codehaus. "groovy" is a registered
 27   
     trademark of The Codehaus.
 28   
 
 29   
  5. Due credit should be given to The Codehaus -
 30   
     http://groovy.codehaus.org/
 31   
 
 32   
  THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 33   
  ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 34   
  NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 35   
  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 36   
  THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 37   
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 38   
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 39   
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 40   
  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 41   
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 42   
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 43   
  OF THE POSSIBILITY OF SUCH DAMAGE.
 44   
 
 45   
  */
 46   
 package groovy.util;
 47   
 
 48   
 
 49   
 import groovy.lang.Closure;
 50   
 import groovy.lang.GroovyObjectSupport;
 51   
 
 52   
 import java.util.List;
 53   
 import java.util.Map;
 54   
 
 55   
 import org.codehaus.groovy.runtime.InvokerHelper;
 56   
 
 57   
 /**
 58   
  * An abstract base class for creating arbitrary nested trees of objects
 59   
  * or events
 60   
  * 
 61   
  * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 62   
  * @version $Revision: 1.6 $
 63   
  */
 64   
 public abstract class BuilderSupport extends GroovyObjectSupport {
 65   
 
 66   
     private Object current;
 67   
     private Closure nameMappingClosure;
 68   
     private BuilderSupport proxyBuilder;
 69   
     
 70  0
     public BuilderSupport() {
 71  0
         this.proxyBuilder = this;
 72   
     }
 73   
     
 74  0
     public BuilderSupport(BuilderSupport proxyBuilder) {
 75  0
         this(null, proxyBuilder);
 76   
     }
 77   
     
 78  0
     public BuilderSupport(Closure nameMappingClosure, BuilderSupport proxyBuilder) {
 79  0
         this.nameMappingClosure = nameMappingClosure;
 80  0
         this.proxyBuilder = proxyBuilder;
 81   
     }
 82   
     
 83  0
     public Object invokeMethod(String methodName, Object args) {
 84  0
         Object name = getName(methodName);
 85  0
         return doInvokeMethod(methodName, name, args);
 86   
     }
 87   
     
 88  0
     protected Object doInvokeMethod(String methodName, Object name, Object args) {
 89  0
         Object node = null;
 90  0
         Closure closure = null;
 91  0
         List list = InvokerHelper.asList(args);
 92   
 
 93   
         //System.out.println("Called invokeMethod with name: " + name + " arguments: " + list);
 94   
 
 95  0
         switch (list.size()) {
 96   
                 case 0:
 97  0
                     break;
 98   
                     case 1:
 99   
                     {
 100  0
                             Object object = list.get(0);
 101  0
                             if (object instanceof Map) {
 102  0
                                 node = proxyBuilder.createNode(name, (Map) object);
 103  0
                             } else if (object instanceof Closure) {
 104  0
                                 closure = (Closure) object;
 105  0
                                 node = proxyBuilder.createNode(name);
 106   
                             } else {
 107  0
                                 node = proxyBuilder.createNode(name, object);
 108   
                             }
 109   
                     }
 110  0
                     break;
 111   
                     case 2:
 112   
                     {
 113  0
                         Object object1 = list.get(0);
 114  0
                         Object object2 = list.get(1);
 115  0
                         if (object1 instanceof Map) {
 116  0
                             if (object2 instanceof Closure) {
 117  0
                                 closure = (Closure) object2;
 118  0
                                 node = proxyBuilder.createNode(name, (Map) object1);
 119   
                             } else {
 120  0
                                 node = proxyBuilder.createNode(name, (Map) object1, object2);
 121   
                             }
 122   
                         } else {
 123  0
                             if (object2 instanceof Closure) {
 124  0
                                 closure = (Closure) object2;
 125  0
                                 node = proxyBuilder.createNode(name, object1);
 126   
                             }
 127   
                         }
 128   
                     }
 129  0
                     break;
 130   
                     case 3:
 131   
                     {
 132  0
                         Object attributes = list.get(0);
 133  0
                         Object value = list.get(1);
 134  0
                         closure = (Closure) list.get(2);
 135  0
                         node = proxyBuilder.createNode(name, (Map) attributes, value);
 136   
                     }
 137  0
                     break;
 138   
         }
 139   
 
 140  0
             if (node == null) {
 141  0
                 node = proxyBuilder.createNode(name);
 142   
             }
 143   
         
 144  0
         if (current != null) {
 145  0
             proxyBuilder.setParent(current, node);
 146   
         }
 147   
 
 148  0
         if (closure != null) {
 149   
             // push new node on stack
 150  0
             Object oldCurrent = current;
 151  0
             current = node;
 152   
 
 153   
             // lets register the builder as the delegate
 154  0
             closure.setDelegate(this);
 155  0
             closure.call();
 156   
 
 157  0
             current = oldCurrent;
 158   
         }
 159   
 
 160  0
         proxyBuilder.nodeCompleted(current, node);
 161  0
         return node;
 162   
     }
 163   
 
 164   
     protected abstract void setParent(Object parent, Object child);
 165   
     protected abstract Object createNode(Object name);
 166   
     protected abstract Object createNode(Object name, Object value);
 167   
     protected abstract Object createNode(Object name, Map attributes);
 168   
     protected abstract Object createNode(Object name, Map attributes, Object value);
 169   
 
 170   
     /**
 171   
      * A hook to allow names to be converted into some other object
 172   
      * such as a QName in XML or ObjectName in JMX
 173   
      * @param methodName
 174   
      * @return
 175   
      */
 176  0
     protected Object getName(String methodName) {
 177  0
         if (nameMappingClosure != null) {
 178  0
             return nameMappingClosure.call(methodName);
 179   
         }
 180  0
         return methodName;
 181   
     }
 182   
 
 183   
 
 184   
     /**
 185   
      * A hook to allow nodes to be processed once they have had all of their
 186   
      * children applied
 187   
      */
 188  0
     protected void nodeCompleted(Object parent, Object node) {
 189   
     }
 190   
 
 191  0
     protected Object getCurrent() {
 192  0
         return current;
 193   
     }
 194   
     
 195  0
     protected void setCurrent(Object current) {
 196  0
         this.current = current;
 197   
     }
 198   
 }
 199