gomp-20050608-branch/libjava/classpath/gnu/CORBA/typecodes/FixedTypeCode.java

   1 /* FixedTypeCode.java --
   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.CORBA.typecodes;
  40
  41
  42 import java.math.BigDecimal;
  43
  44 import org.omg.CORBA.TCKind;
  45 import org.omg.CORBA.TypeCode;
  46 import org.omg.CORBA.TypeCodePackage.BadKind;
  47
  48 /**
  49  * A typecode for CORBA <code>fixed</code>
  50  * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
  51  */
  52 public class FixedTypeCode
  53   extends PrimitiveTypeCode
  54 {
  55   /**
  56    * Use serialVersionUID for interoperability.
  57    */
  58   private static final long serialVersionUID = 1;
  59
  60
  61   /**
  62    * The number of the used digits.
  63    */
  64   private short digits;
  65
  66   /**
  67    * The number of the digits after the decimal point.
  68    */
  69   private short scale;
  70
  71   /**
  72    * Creates the instance of the fixed type code.
  73    */
  74   public FixedTypeCode()
  75   {
  76     super(TCKind.tk_fixed);
  77   }
  78
  79   /**
  80    * Creates the instance of the fixed type code,
  81    * setting the digits and scale by example.
  82    */
  83   public FixedTypeCode(BigDecimal example)
  84   {
  85     super(TCKind.tk_fixed);
  86     if (example != null)
  87       {
  88         setScale(example.scale());
  89         setDigits(countDigits(example));
  90       }
  91   }
  92
  93   /**
  94    * Set the number of digits.
  95    */
  96   public void setDigits(int a_digits)
  97   {
  98     this.digits = (short) a_digits;
  99   }
 100
 101   /**
 102    * Set the number of digits after the decimal point.
 103    */
 104   public void setScale(int a_scale)
 105   {
 106     this.scale = (short) a_scale;
 107   }
 108
 109   /**
 110    * Get the number of digits in thid BigDecimal
 111    *
 112    * @param x a BigDecimal to check.
 113    */
 114   public static int countDigits(BigDecimal number)
 115   {
 116     return number.unscaledValue().abs().toString().length();
 117   }
 118
 119   /**
 120    * Compare with other type code for equality.
 121    */
 122   public boolean equal(TypeCode other)
 123   {
 124     if (other == this) return true;
 125     try
 126       {
 127         TypeCode that = (TypeCode) other;
 128         return kind() == that.kind() && digits == that.fixed_digits() &&
 129                scale == that.fixed_scale();
 130       }
 131     catch (BadKind ex)
 132       {
 133         return false;
 134       }
 135   }
 136
 137   /**
 138    * Get the number of digits.
 139    */
 140   public short fixed_digits()
 141   {
 142     return digits;
 143   }
 144
 145   /**
 146    * Get the number of digits after the decimal point.
 147    */
 148   public short fixed_scale()
 149   {
 150     return scale;
 151   }
 152 }