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Java > Open Source Codes > org > codehaus > groovy > ast > FieldNode


1 /*
2  $Id: FieldNode.java,v 1.10 2004/07/10 03:31:38 bran 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 JavaDoc;
49
50 import org.codehaus.groovy.ast.expr.Expression;
51 import org.codehaus.groovy.classgen.BytecodeHelper;
52 import org.objectweb.asm.Constants;
53
54 /**
55  * Represents a field (member variable)
56  *
57  * @author <a HREF="mailto:james@coredevelopers.net">James Strachan</a>
58  * @version $Revision: 1.10 $
59  */
60 public class FieldNode extends MetadataNode implements Constants {
61
62     private String JavaDoc name;
63     private int modifiers;
64     private String JavaDoc type;
65     private String JavaDoc owner;
66     private Expression initialValueExpression;
67     private boolean dynamicType;
68     private boolean holder;
69
70     public static FieldNode newStatic(Class JavaDoc theClass, String JavaDoc name) throws SecurityException JavaDoc, NoSuchFieldException JavaDoc {
71         Field JavaDoc field = theClass.getField(name);
72         String JavaDoc fldType = field.getType().getName();
73         return new FieldNode(name, ACC_PUBLIC | ACC_STATIC, fldType, theClass.getName(), null);
74     }
75
76     public FieldNode(String JavaDoc name, int modifiers, String JavaDoc type, String JavaDoc owner, Expression initialValueExpression) {
77         this.name = name;
78         this.modifiers = modifiers;
79         this.type = type;
80         this.owner = owner;
81         this.initialValueExpression = initialValueExpression;
82         if (type == null || type.length() == 0) {
83             this.dynamicType = true;
84             if (initialValueExpression != null) {
85                 String JavaDoc initType = initialValueExpression.getType();
86                 if (initType != null && initType.length() > 0){
87                     this.type = initType;
88 // this.dynamicType = false;
89 }
90                 else {
91                     this.type = "java.lang.Object";
92 // this.dynamicType = true;
93 }
94             }
95             else {
96                 this.type = "java.lang.Object";
97 // this.dynamicType = true;
98 }
99         }
100         else {
101             String JavaDoc boxedType = BytecodeHelper.getObjectTypeForPrimitive(type);
102             boxedType = BytecodeHelper.getObjectArrayTypeForPrimitiveArray(boxedType);
103             this.type = boxedType;
104             dynamicType = false;
105         }
106     }
107
108     public Expression getInitialValueExpression() {
109         return initialValueExpression;
110     }
111
112     public int getModifiers() {
113         return modifiers;
114     }
115
116     public String JavaDoc getName() {
117         return name;
118     }
119
120     public String JavaDoc getType() {
121         return type;
122     }
123
124     public void setType(String JavaDoc type) {
125         this.type = type;
126     }
127     
128     public String JavaDoc getOwner() {
129         return owner;
130     }
131
132     public boolean isHolder() {
133         return holder;
134     }
135
136     public void setHolder(boolean holder) {
137         this.holder = holder;
138     }
139
140     public boolean isDynamicType() {
141         return dynamicType;
142     }
143
144     public void setModifiers(int modifiers) {
145         this.modifiers = modifiers;
146     }
147
148     /**
149      * @return true if the field is static
150      */
151     public boolean isStatic() {
152         return (modifiers & Constants.ACC_STATIC) != 0;
153     }
154     /**
155      * @param owner The owner to set.
156      */
157     public void setOwner(String JavaDoc owner) {
158         this.owner = owner;
159     }
160 }
161
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