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    1   /***************************************************************************************
    2    * Copyright (c) Jonas Bon?r, Alexandre Vasseur. All rights reserved.                 *
    3    * http://aspectwerkz.codehaus.org                                                    *
    4    * ---------------------------------------------------------------------------------- *
    5    * The software in this package is published under the terms of the LGPL license      *
    6    * a copy of which has been included with this distribution in the license.txt file.  *
    7    **************************************************************************************/
    8   package org.codehaus.aspectwerkz.transform.inlining.weaver;
    9
    10  import org.objectweb.asm.Constants;
    11  import org.objectweb.asm.CodeVisitor;
    12  import org.objectweb.asm.Attribute;
    13  import org.codehaus.aspectwerkz.transform.TransformationConstants;
    14  import org.codehaus.aspectwerkz.annotation.instrumentation.asm.AsmAnnotationHelper;
    15
    16  import java.util.Set;
    17
    18  /***
    19   * A read only visitor to gather wrapper methods and proxy methods
    20   * Makes use of the NullVisitors
    21   *
    22   * @author <a href="mailto:alex@gnilux.com">Alexandre Vasseur</a>
    23   */
    24  public class AlreadyAddedMethodAdapter extends AsmAnnotationHelper.NullClassAdapter implements Constants, TransformationConstants {
    25
    26      /***
    27       * Set of "<methodName><methodDesc>" strings populated with wrapper methods, prefixed originals
    28       * and ctor body wrappers to allow multiweaving support.
    29       */
    30      private final Set m_addedMethods;
    31
    32      /***
    33       * Creates a new class adapter.
    34       *
    35       * @param wrappers
    36       */
    37      public AlreadyAddedMethodAdapter(final Set wrappers) {
    38          m_addedMethods = wrappers;
    39      }
    40
    41      /***
    42       * Visits the methods.
    43       *
    44       * @param access
    45       * @param name
    46       * @param desc
    47       * @param exceptions
    48       * @param attrs
    49       * @return
    50       */
    51      public CodeVisitor visitMethod(final int access,
    52                                     final String name,
    53                                     final String desc,
    54                                     final String[] exceptions,
    55                                     final Attribute attrs) {
    56          if (name.startsWith(WRAPPER_METHOD_PREFIX)
    57              || name.startsWith(ORIGINAL_METHOD_PREFIX)) {
    58              m_addedMethods.add(getMethodKey(name, desc));
    59          }
    60          return super.visitMethod(access, name, desc, exceptions, attrs);
    61      }
    62
    63      static String getMethodKey(String name, String desc) {
    64          StringBuffer sb = new StringBuffer(name);
    65          return sb.append(desc).toString();
    66      }
    67  }