libjava/classpath/gnu/java/beans/encoder/IgnoringScannerState.java

   1 /* IgnoringScannerState.java -- A ScannerState that does nothing.
   2  Copyright (C) 2005 Free Software Foundation, Inc.
   3
   4  This file is part of GNU Classpath.
   5
   6  GNU Classpath is free software; you can redistribute it and/or modify
   7  it under the terms of the GNU General Public License as published by
   8  the Free Software Foundation; either version 2, or (at your option)
   9  any later version.
  10
  11  GNU Classpath is distributed in the hope that it will be useful, but
  12  WITHOUT ANY WARRANTY; without even the implied warranty of
  13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  General Public License for more details.
  15
  16  You should have received a copy of the GNU General Public License
  17  along with GNU Classpath; see the file COPYING.  If not, write to the
  18  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19  02110-1301 USA.
  20
  21  Linking this library statically or dynamically with other modules is
  22  making a combined work based on this library.  Thus, the terms and
  23  conditions of the GNU General Public License cover the whole
  24  combination.
  25
  26  As a special exception, the copyright holders of this library give you
  27  permission to link this library with independent modules to produce an
  28  executable, regardless of the license terms of these independent
  29  modules, and to copy and distribute the resulting executable under
  30  terms of your choice, provided that you also meet, for each linked
  31  independent module, the terms and conditions of the license of that
  32  module.  An independent module is a module which is not derived from
  33  or based on this library.  If you modify this library, you may extend
  34  this exception to your version of the library, but you are not
  35  obligated to do so.  If you do not wish to do so, delete this
  36  exception statement from your version. */
  37
  38
  39 package gnu.java.beans.encoder;
  40
  41 /** A special {@link ScannerState} implementation that ignores all child
  42  * elements.
  43  *
  44  * <p>Consider the call hierarchy:
  45  * <code>
  46  * methodInvocation
  47  *   objectInstantiation
  48  *     classResolution*
  49  *       objectInstantiation
  50  *         classResolution
  51  * </code>
  52  * </p>
  53  *
  54  * <p>When the ignoring state is active one can filter the elements of
  55  * one level. One has to set up the state machine that a transition
  56  * via "class resolution" from a state that was reached via "object
  57  * instantation" reaches an <code>IgnoringScannerState</code>.</p>
  58  *
  59  * <p>Setting the default successor of a <code>IgnoringScannerState</code>
  60  * to itself causes all elements of the call hierarchy to be skipped
  61  * until another state is reached by going back.</p>
  62  *
  63  * @author Robert Schuster (robertschuster@fsfe.org)
  64  *
  65  */
  66 class IgnoringScannerState extends ScannerState
  67 {
  68
  69   void methodInvocation(String methodName)
  70   {
  71   }
  72
  73   void staticMethodInvocation(String className, String methodName)
  74   {
  75   }
  76
  77   void staticFieldAccess(String className, String fieldName)
  78   {
  79   }
  80
  81   void classResolution(String className)
  82   {
  83   }
  84
  85   void objectInstantiation(String className, ObjectId objectId)
  86   {
  87   }
  88
  89   void primitiveInstantiation(String primitiveName, String valueAsString)
  90   {
  91   }
  92
  93   void objectArrayInstantiation(String arrayClassName, String lengthAsString, ObjectId objectId)
  94   {
  95   }
  96
  97   void primitiveArrayInstantiation(String arrayClassName, String lengthAsString, ObjectId objectId)
  98   {
  99   }
 100
 101   void arraySet(String indexAsString)
 102   {
 103   }
 104
 105   void arrayGet(String indexAsString)
 106   {
 107   }
 108
 109   void listGet()
 110   {
 111   }
 112
 113   void listSet()
 114   {
 115   }
 116
 117   void nullObject()
 118   {
 119   }
 120
 121   void stringReference(String string)
 122   {
 123   }
 124
 125   void objectReference(ObjectId id)
 126   {
 127   }
 128
 129   void end()
 130   {
 131   }
 132
 133 }