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    1   /*
    2    * Copyright  2000-2004 The Apache Software Foundation
    3    *
    4    *  Licensed under the Apache License, Version 2.0 (the "License");
    5    *  you may not use this file except in compliance with the License.
    6    *  You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   *  Unless required by applicable law or agreed to in writing, software
    11   *  distributed under the License is distributed on an "AS IS" BASIS,
    12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   *  See the License for the specific language governing permissions and
    14   *  limitations under the License.
    15   *
    16   */
    17  package org.apache.bcel.generic;
    18
    19  import java.util.ArrayList;
    20  import java.util.List;
    21  import org.apache.bcel.Constants;
    22  import org.apache.bcel.classfile.AccessFlags;
    23  import org.apache.bcel.classfile.Attribute;
    24
    25  /***
    26   * Super class for FieldGen and MethodGen objects, since they have
    27   * some methods in common!
    28   *
    29   * @version $Id: FieldGenOrMethodGen.java 410087 2006-05-29 12:12:19Z tcurdt $
    30   * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
    31   */
    32  public abstract class FieldGenOrMethodGen extends AccessFlags implements NamedAndTyped, Cloneable {
    33
    34      protected String name;
    35      protected Type type;
    36      protected ConstantPoolGen cp;
    37      private List attribute_vec = new ArrayList();
    38
    39
    40      protected FieldGenOrMethodGen() {
    41      }
    42
    43
    44      public void setType( Type type ) {
    45          if (type.getType() == Constants.T_ADDRESS) {
    46              throw new IllegalArgumentException("Type can not be " + type);
    47          }
    48          this.type = type;
    49      }
    50
    51
    52      public Type getType() {
    53          return type;
    54      }
    55
    56
    57      /*** @return name of method/field.
    58       */
    59      public String getName() {
    60          return name;
    61      }
    62
    63
    64      public void setName( String name ) {
    65          this.name = name;
    66      }
    67
    68
    69      public ConstantPoolGen getConstantPool() {
    70          return cp;
    71      }
    72
    73
    74      public void setConstantPool( ConstantPoolGen cp ) {
    75          this.cp = cp;
    76      }
    77
    78
    79      /***
    80       * Add an attribute to this method. Currently, the JVM knows about
    81       * the `Code', `ConstantValue', `Synthetic' and `Exceptions'
    82       * attributes. Other attributes will be ignored by the JVM but do no
    83       * harm.
    84       *
    85       * @param a attribute to be added
    86       */
    87      public void addAttribute( Attribute a ) {
    88          attribute_vec.add(a);
    89      }
    90
    91
    92      /***
    93       * Remove an attribute.
    94       */
    95      public void removeAttribute( Attribute a ) {
    96          attribute_vec.remove(a);
    97      }
    98
    99
    100     /***
    101      * Remove all attributes.
    102      */
    103     public void removeAttributes() {
    104         attribute_vec.clear();
    105     }
    106
    107
    108     /***
    109      * @return all attributes of this method.
    110      */
    111     public Attribute[] getAttributes() {
    112         Attribute[] attributes = new Attribute[attribute_vec.size()];
    113         attribute_vec.toArray(attributes);
    114         return attributes;
    115     }
    116
    117
    118     /*** @return signature of method/field.
    119      */
    120     public abstract String getSignature();
    121
    122
    123     public Object clone() {
    124         try {
    125             return super.clone();
    126         } catch (CloneNotSupportedException e) {
    127             System.err.println(e);
    128             return null;
    129         }
    130     }
    131 }