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    }