001 /*
002 $Id: FieldNode.java,v 1.17 2005/11/13 16:42:09 blackdrag Exp $
003
004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005
006 Redistribution and use of this software and associated documentation
007 ("Software"), with or without modification, are permitted provided
008 that the following conditions are met:
009
010 1. Redistributions of source code must retain copyright
011 statements and notices. Redistributions must also contain a
012 copy of this document.
013
014 2. Redistributions in binary form must reproduce the
015 above copyright notice, this list of conditions and the
016 following disclaimer in the documentation and/or other
017 materials provided with the distribution.
018
019 3. The name "groovy" must not be used to endorse or promote
020 products derived from this Software without prior written
021 permission of The Codehaus. For written permission,
022 please contact info@codehaus.org.
023
024 4. Products derived from this Software may not be called "groovy"
025 nor may "groovy" appear in their names without prior written
026 permission of The Codehaus. "groovy" is a registered
027 trademark of The Codehaus.
028
029 5. Due credit should be given to The Codehaus -
030 http://groovy.codehaus.org/
031
032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043 OF THE POSSIBILITY OF SUCH DAMAGE.
044
045 */
046 package org.codehaus.groovy.ast;
047
048 import java.lang.reflect.Field;
049
050 import org.codehaus.groovy.ast.expr.Expression;
051 import org.objectweb.asm.Opcodes;
052
053 /**
054 * Represents a field (member variable)
055 *
056 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
057 * @version $Revision: 1.17 $
058 */
059 public class FieldNode extends AnnotatedNode implements Opcodes, Variable {
060
061 private String name;
062 private int modifiers;
063 private ClassNode type;
064 private ClassNode owner;
065 private Expression initialValueExpression;
066 private boolean dynamicTyped;
067 private boolean holder;
068
069 public static FieldNode newStatic(Class theClass, String name) throws SecurityException, NoSuchFieldException {
070 Field field = theClass.getField(name);
071 ClassNode fldType = ClassHelper.make(field.getType());
072 return new FieldNode(name, ACC_PUBLIC | ACC_STATIC, fldType, ClassHelper.make(theClass), null);
073 }
074
075 public FieldNode(String name, int modifiers, ClassNode type, ClassNode owner, Expression initialValueExpression) {
076 this.name = name;
077 this.modifiers = modifiers;
078 this.type = type;
079 if (this.type==ClassHelper.DYNAMIC_TYPE && initialValueExpression!=null) this.setType(initialValueExpression.getType());
080 this.setType(ClassHelper.getWrapper(type));
081 this.owner = owner;
082 this.initialValueExpression = initialValueExpression;
083 }
084
085 public Expression getInitialExpression() {
086 return initialValueExpression;
087 }
088
089 public int getModifiers() {
090 return modifiers;
091 }
092
093 public String getName() {
094 return name;
095 }
096
097 public ClassNode getType() {
098 return type;
099 }
100
101 public void setType(ClassNode type) {
102 this.type = type;
103 dynamicTyped |= type==ClassHelper.DYNAMIC_TYPE;
104 }
105
106 public ClassNode getOwner() {
107 return owner;
108 }
109
110 public boolean isHolder() {
111 return holder;
112 }
113
114 public void setHolder(boolean holder) {
115 this.holder = holder;
116 }
117
118 public boolean isDynamicTyped() {
119 return dynamicTyped;
120 }
121
122 public void setModifiers(int modifiers) {
123 this.modifiers = modifiers;
124 }
125
126 /**
127 * @return true if the field is static
128 */
129 public boolean isStatic() {
130 return (modifiers & ACC_STATIC) != 0;
131 }
132 /**
133 * @param owner The owner to set.
134 */
135 public void setOwner(ClassNode owner) {
136 this.owner = owner;
137 }
138
139 public boolean hasInitialExpression() {
140 return initialValueExpression!=null;
141 }
142
143 public boolean isInStaticContext() {
144 return isStatic();
145 }
146 public Expression getInitialValueExpression() {
147 return initialValueExpression;
148 }
149 public void setInitialValueExpression(Expression initialValueExpression) {
150 this.initialValueExpression = initialValueExpression;
151 }
152 }