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1   /*
2    $Id: FieldNode.java,v 1.14 2005/05/27 10:13:08 russel 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 org.codehaus.groovy.ast;
47  
48  import java.lang.reflect.Field;
49  
50  import org.codehaus.groovy.ast.expr.Expression;
51  import org.codehaus.groovy.classgen.BytecodeHelper;
52  import org.objectweb.asm.Opcodes;
53  
54  /***
55   * Represents a field (member variable)
56   * 
57   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
58   * @version $Revision: 1.14 $
59   */
60  public class FieldNode extends AnnotatedNode implements Opcodes {
61  
62      private String name;
63      private int modifiers;
64      private String type;
65      private String owner;
66      private Expression initialValueExpression;
67      private boolean dynamicType;
68      private boolean holder;
69  
70      public static FieldNode newStatic(Class theClass, String name) throws SecurityException, NoSuchFieldException {
71          Field field = theClass.getField(name);
72          String fldType = field.getType().getName();
73          return new FieldNode(name, ACC_PUBLIC | ACC_STATIC, fldType, theClass.getName(), null);
74      }
75  
76      public FieldNode(String name, int modifiers, String type, ClassNode owner, Expression initialValueExpression) {
77          this(name, modifiers, type, owner.getName(), initialValueExpression);
78      }
79  
80      public FieldNode(String name, int modifiers, String type, String owner, Expression initialValueExpression) {
81          this.name = name;
82          this.modifiers = modifiers;
83          this.type = type;
84          this.owner = owner;
85          this.initialValueExpression = initialValueExpression;
86          if (type == null || type.length() == 0) {
87              this.dynamicType = true;
88              if (initialValueExpression != null) {
89                  String initType = initialValueExpression.getType();
90                  if (initType != null && initType.length() > 0){
91                      this.type = initType;
92  //                    this.dynamicType = false;
93                  }
94                  else {
95                      this.type = "java.lang.Object";
96  //                    this.dynamicType = true;
97                  }
98              }
99              else {
100                 this.type = "java.lang.Object";
101 //                this.dynamicType = true;
102             }
103         }
104         else {
105             String boxedType = BytecodeHelper.getObjectTypeForPrimitive(type);
106             this.type = boxedType;
107             dynamicType = false;
108         }
109     }
110 
111     public Expression getInitialValueExpression() {
112         return initialValueExpression;
113     }
114 
115     public int getModifiers() {
116         return modifiers;
117     }
118 
119     public String getName() {
120         return name;
121     }
122 
123     public String getType() {
124         return type;
125     }
126 
127     public void setType(String type) {
128         this.type = type;
129     }
130     
131     public String getOwner() {
132         return owner;
133     }
134 
135     public boolean isHolder() {
136         return holder;
137     }
138 
139     public void setHolder(boolean holder) {
140         this.holder = holder;
141     }
142 
143     public boolean isDynamicType() {
144         return dynamicType;
145     }
146 
147     public void setModifiers(int modifiers) {
148         this.modifiers = modifiers;
149     }
150 
151     /***
152      * @return true if the field is static
153      */
154     public boolean isStatic() {
155         return (modifiers & ACC_STATIC) != 0;
156     }
157 	/***
158 	 * @param owner The owner to set.
159 	 */
160 	public void setOwner(String owner) {
161 		this.owner = owner;
162 	}
163 }