libjava/classpath/tools/gnu/classpath/tools/gjdoc/expr/ConstantChar.java

   1 /* gnu.classpath.tools.gjdoc.expr.ConstantChar
   2    Copyright (C) 2004 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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA. */
  20
  21 package gnu.classpath.tools.gjdoc.expr;
  22
  23 class ConstantChar
  24    extends ConstantExpression
  25 {
  26    private char value;
  27
  28    public ConstantChar(String stringValue)
  29    {
  30       this.value = stringValue.charAt(1); // FIXME
  31       if (value == '\\') {
  32          switch (stringValue.charAt(2)) {
  33          case 'n': value = '\n'; break;
  34          case 't': value = '\t'; break;
  35          case 'f': value = '\f'; break;
  36          case 'r': value = '\r'; break;
  37          case 'b': value = '\b'; break;
  38          case 'u':
  39             {
  40                String stringVal = stringValue.substring(3, stringValue.length() - 1);
  41                /*
  42                while (stringVal.length() > 1 && stringVal.charAt(0) == '0') {
  43                   stringVal = stringVal.substring(1);
  44                }
  45                */
  46                value = (char)Integer.parseInt(stringVal, 16); break;
  47             }
  48          }
  49       }
  50    }
  51
  52    public ConstantChar(char charValue)
  53    {
  54       this.value = charValue;
  55    }
  56
  57    public Type getType()
  58    {
  59       return Type.CHAR;
  60    }
  61
  62    public Number asNumber()
  63    {
  64       return new Integer((int)value);
  65    }
  66
  67    public Object asObject()
  68    {
  69       return new Character(value);
  70    }
  71
  72    public boolean isNumber()
  73    {
  74       return true;
  75    }
  76
  77    public String toString()
  78    {
  79       return Character.toString(value);
  80    }
  81 }