Source for gnu.classpath.jdwp.util.LineTable

   1: /* LineTable.java -- A class representing a Line Table for a method
   2:    Copyright (C) 2005, 2006 Free Software Foundation
   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: terms of your choice, provided that you also meet, for each linked
  32: independent module, the terms and conditions of the license of that
  33: module.  An independent module is a module which is not derived from
  34: or based on this library.  If you modify this library, you may extend
  35: this exception to your version of the library, but you are not
  36: obligated to do so.  If you do not wish to do so, delete this
  37: exception statement from your version. */
  38: 
  39: 
  40: package gnu.classpath.jdwp.util;
  41: 
  42: import java.io.DataOutputStream;
  43: import java.io.IOException;
  44: 
  45: /**
  46:  * A class representing a Line Table for a method.
  47:  *
  48:  * @author Aaron Luchko <aluchko@redhat.com>
  49:  */
  50: public class LineTable
  51: {
  52: 
  53:   private final long start;
  54:   private final long end;
  55:   private final int[] lineNum;
  56:   private final long[] lineCI;
  57: 
  58:   /**
  59:    * Construct a line table with the given parameters.
  60:    *
  61:    * @param start lowest code index for method, -1 if native
  62:    * @param end highest code index for method, -1 if native
  63:    * @param lineNum line numbers for in line tables
  64:    * @param lineCI code indicies for entries in line tables
  65:    */
  66:   public LineTable(long start, long end, int[] lineNum, long[] lineCI)
  67:   {
  68:     if (lineNum.length != lineCI.length)
  69:       throw new AssertionError("code index and line numbers tables "
  70:                                + "not same length");
  71:     this.start = start;
  72:     this.end = end;
  73:     this.lineNum = lineNum;
  74:     this.lineCI = lineCI;
  75:   }
  76: 
  77:   /**
  78:    * Writes this line table to the given DataOutputStream.
  79:    *
  80:    * @param os the stream to write it to
  81:    * @throws IOException
  82:    */
  83:   public void write(DataOutputStream os)
  84:     throws IOException
  85:   {
  86:     os.writeLong(start);
  87:     os.writeLong(end);
  88:     os.writeInt(lineNum.length);
  89:     for (int i = 0; i < lineNum.length; i++)
  90:       {
  91:         os.writeLong(lineCI[i]);
  92:         os.writeInt(lineNum[i]);
  93:       }
  94:   }
  95: }