1 /*

     2  * reserved comment block

     3  * DO NOT REMOVE OR ALTER!

     4  */

     5 package com.sun.org.apache.bcel.internal.classfile;

     6 /**

     7  *  Licensed to the Apache Software Foundation (ASF) under one or more

     8  *  contributor license agreements.  See the NOTICE file distributed with

     9  *  this work for additional information regarding copyright ownership.

    10  *  The ASF licenses this file to You under the Apache License, Version 2.0

    11  *  (the "License"); you may not use this file except in compliance with

    12  *  the License.  You may obtain a copy of the License at

    13  *

    14  *     http://www.apache.org/licenses/LICENSE-2.0

    15  *

    16  *  Unless required by applicable law or agreed to in writing, software

    17  *  distributed under the License is distributed on an "AS IS" BASIS,

    18  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    19  *  See the License for the specific language governing permissions and

    20  *  limitations under the License.

    21  */

    22 

    23 import  com.sun.org.apache.bcel.internal.Constants;

    24 import  java.io.*;

    25 

    26 // The new table is used when generic types are about...

    27 

    28 //LocalVariableTable_attribute {

    29 //         u2 attribute_name_index;

    30 //         u4 attribute_length;

    31 //         u2 local_variable_table_length;

    32 //         {  u2 start_pc;

    33 //            u2 length;

    34 //            u2 name_index;

    35 //            u2 descriptor_index;

    36 //            u2 index;

    37 //         } local_variable_table[local_variable_table_length];

    38 //       }

    39 

    40 //LocalVariableTypeTable_attribute {

    41 //    u2 attribute_name_index;

    42 //    u4 attribute_length;

    43 //    u2 local_variable_type_table_length;

    44 //    {

    45 //      u2 start_pc;

    46 //      u2 length;

    47 //      u2 name_index;

    48 //      u2 signature_index;

    49 //      u2 index;

    50 //    } local_variable_type_table[local_variable_type_table_length];

    51 //  }

    52 // J5TODO: Needs some testing !

    53 public class LocalVariableTypeTable extends Attribute {

    54   private static final long serialVersionUID = -1082157891095177114L;

    55 private int             local_variable_type_table_length; // Table of local

    56   private LocalVariable[] local_variable_type_table;        // variables

    57 

    58   public LocalVariableTypeTable(LocalVariableTypeTable c) {

    59     this(c.getNameIndex(), c.getLength(), c.getLocalVariableTypeTable(),

    60          c.getConstantPool());

    61   }

    62 

    63   public LocalVariableTypeTable(int name_index, int length,

    64                             LocalVariable[] local_variable_table,

    65                             ConstantPool    constant_pool)

    66   {

    67     super(Constants.ATTR_LOCAL_VARIABLE_TYPE_TABLE, name_index, length, constant_pool);

    68     setLocalVariableTable(local_variable_table);

    69   }

    70 

    71   LocalVariableTypeTable(int nameIdx, int len, DataInputStream dis,ConstantPool cpool) throws IOException {

    72     this(nameIdx, len, (LocalVariable[])null, cpool);

    73 

    74     local_variable_type_table_length = (dis.readUnsignedShort());

    75     local_variable_type_table = new LocalVariable[local_variable_type_table_length];

    76 

    77     for(int i=0; i < local_variable_type_table_length; i++)

    78       local_variable_type_table[i] = new LocalVariable(dis, cpool);

    79   }

    80 

    81   @Override

    82 public void accept(Visitor v) {

    83     v.visitLocalVariableTypeTable(this);

    84   }

    85 

    86   @Override

    87 public final void dump(DataOutputStream file) throws IOException

    88   {

    89     super.dump(file);

    90     file.writeShort(local_variable_type_table_length);

    91     for(int i=0; i < local_variable_type_table_length; i++)

    92       local_variable_type_table[i].dump(file);

    93   }

    94 

    95   public final LocalVariable[] getLocalVariableTypeTable() {

    96     return local_variable_type_table;

    97   }

    98 

    99   public final LocalVariable getLocalVariable(int index) {

   100     for(int i=0; i < local_variable_type_table_length; i++)

   101       if(local_variable_type_table[i].getIndex() == index)

   102         return local_variable_type_table[i];

   103 

   104     return null;

   105   }

   106 

   107   public final void setLocalVariableTable(LocalVariable[] local_variable_table)

   108   {

   109     this.local_variable_type_table = local_variable_table;

   110     local_variable_type_table_length = (local_variable_table == null)? 0 :

   111       local_variable_table.length;

   112   }

   113 

   114   /**

   115    * @return String representation.

   116    */

   117   @Override

   118 public final String toString() {

   119       StringBuilder buf = new StringBuilder();

   120 

   121     for(int i=0; i < local_variable_type_table_length; i++) {

   122       buf.append(local_variable_type_table[i].toString());

   123 

   124       if(i < local_variable_type_table_length - 1) buf.append('\n');

   125     }

   126 

   127     return buf.toString();

   128   }

   129 

   130   /**

   131    * @return deep copy of this attribute

   132    */

   133   @Override

   134 public Attribute copy(ConstantPool constant_pool) {

   135     LocalVariableTypeTable c = (LocalVariableTypeTable)clone();

   136 

   137     c.local_variable_type_table = new LocalVariable[local_variable_type_table_length];

   138     for(int i=0; i < local_variable_type_table_length; i++)

   139       c.local_variable_type_table[i] = local_variable_type_table[i].copy();

   140 

   141     c.constant_pool = constant_pool;

   142     return c;

   143   }

   144 

   145   public final int getTableLength() { return local_variable_type_table_length; }

   146 }