001    /*
002     $Id: FieldNode.java,v 1.14 2005/05/27 10:13:08 russel 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.codehaus.groovy.classgen.BytecodeHelper;
052    import org.objectweb.asm.Opcodes;
053    
054    /**
055     * Represents a field (member variable)
056     * 
057     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
058     * @version $Revision: 1.14 $
059     */
060    public class FieldNode extends AnnotatedNode implements Opcodes {
061    
062        private String name;
063        private int modifiers;
064        private String type;
065        private String owner;
066        private Expression initialValueExpression;
067        private boolean dynamicType;
068        private boolean holder;
069    
070        public static FieldNode newStatic(Class theClass, String name) throws SecurityException, NoSuchFieldException {
071            Field field = theClass.getField(name);
072            String fldType = field.getType().getName();
073            return new FieldNode(name, ACC_PUBLIC | ACC_STATIC, fldType, theClass.getName(), null);
074        }
075    
076        public FieldNode(String name, int modifiers, String type, ClassNode owner, Expression initialValueExpression) {
077            this(name, modifiers, type, owner.getName(), initialValueExpression);
078        }
079    
080        public FieldNode(String name, int modifiers, String type, String owner, Expression initialValueExpression) {
081            this.name = name;
082            this.modifiers = modifiers;
083            this.type = type;
084            this.owner = owner;
085            this.initialValueExpression = initialValueExpression;
086            if (type == null || type.length() == 0) {
087                this.dynamicType = true;
088                if (initialValueExpression != null) {
089                    String initType = initialValueExpression.getType();
090                    if (initType != null && initType.length() > 0){
091                        this.type = initType;
092    //                    this.dynamicType = false;
093                    }
094                    else {
095                        this.type = "java.lang.Object";
096    //                    this.dynamicType = true;
097                    }
098                }
099                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    }