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    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;
    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 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, String 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 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 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 getName() {
    117         return name;
    118     }
    119
    120     public String getType() {
    121         return type;
    122     }
    123
    124     public void setType(String type) {
    125         this.type = type;
    126     }
    127
    128     public String 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 owner) {
    158 		this.owner = owner;
    159 	}
    160 }