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      1 /* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
      2  *
      3  * This program and the accompanying materials are made available under
      4  * the terms of the Common Public License v1.0 which accompanies this distribution,
      5  * and is available at http://www.eclipse.org/legal/cpl-v10.html
      6  *
      7  * $Id: CONSTANT_Long_info.java,v 1.1.1.1 2004/05/09 16:57:49 vlad_r Exp $
      8  */
      9 package com.vladium.jcd.cls.constant;
     10 
     11 import java.io.IOException;
     12 
     13 import com.vladium.jcd.lib.UDataInputStream;
     14 import com.vladium.jcd.lib.UDataOutputStream;
     15 
     16 // ----------------------------------------------------------------------------
     17 /**
     18  * The CONSTANT_Long_info and {@link CONSTANT_Double_info} represent eight-byte
     19  * numeric (long and double) constants.<P>
     20  *
     21  * The unsigned high_bytes and low_bytes items of the CONSTANT_Long_info structure
     22  * together contain the value of the long constant
     23  * (( long ) high_bytes << 32) + low_bytes , where the bytes of each of high_bytes
     24  * and low_bytes are stored in big-endian (high byte first) order.
     25  *
     26  * @author (C) 2001, Vlad Roubtsov
     27  */
     28 public
     29 final class CONSTANT_Long_info extends CONSTANT_literal_info
     30 {
     31     // public: ................................................................
     32 
     33     public static final byte TAG = 5;
     34 
     35     public long m_value;
     36 
     37 
     38     public CONSTANT_Long_info (final long value)
     39     {
     40         m_value = value;
     41     }
     42 
     43     public final byte tag ()
     44     {
     45         return TAG;
     46     }
     47 
     48     // Visitor:
     49 
     50     public Object accept (final ICONSTANTVisitor visitor, final Object ctx)
     51     {
     52         return visitor.visit (this, ctx);
     53     }
     54 
     55     public String toString ()
     56     {
     57         return Long.toString (m_value);
     58     }
     59 
     60     /**
     61      * Overrides the default implementation to return '2'.
     62      */
     63     public int width ()
     64     {
     65         return 2;
     66     }
     67 
     68     // Cloneable: inherited clone() is Ok
     69 
     70     // IClassFormatOutput:
     71 
     72     public void writeInClassFormat (final UDataOutputStream out) throws IOException
     73     {
     74         super.writeInClassFormat (out);
     75 
     76         out.writeLong (m_value);
     77     }
     78 
     79     // protected: .............................................................
     80 
     81 
     82     protected CONSTANT_Long_info (final UDataInputStream bytes) throws IOException
     83     {
     84         m_value = bytes.readLong ();
     85     }
     86 
     87     // package: ...............................................................
     88 
     89     // private: ...............................................................
     90 
     91 } // end of class
     92 // ----------------------------------------------------------------------------
     93