View Javadoc

    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.io.IOException;
    20  import org.apache.bcel.util.ByteSequence;
    21
    22  /***
    23   * LDC_W - Push item from constant pool (wide index)
    24   *
    25   * <PRE>Stack: ... -&gt; ..., item.word1, item.word2</PRE>
    26   *
    27   * @version $Id: LDC_W.java 386056 2006-03-15 11:31:56Z tcurdt $
    28   * @author  <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
    29   */
    30  public class LDC_W extends LDC {
    31
    32      /***
    33       * Empty constructor needed for the Class.newInstance() statement in
    34       * Instruction.readInstruction(). Not to be used otherwise.
    35       */
    36      LDC_W() {
    37      }
    38
    39
    40      public LDC_W(int index) {
    41          super(index);
    42      }
    43
    44
    45      /***
    46       * Read needed data (i.e., index) from file.
    47       */
    48      protected void initFromFile( ByteSequence bytes, boolean wide ) throws IOException {
    49          setIndex(bytes.readUnsignedShort());
    50          // Override just in case it has been changed
    51          opcode = org.apache.bcel.Constants.LDC_W;
    52          length = 3;
    53      }
    54  }