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Java > Open Source Codes > gnu > kawa > lispexpr > ReadTableEntry


1 // Copyright (c) 2001 Per M.A. Bothner
2 // This is free software; for terms and warranty disclaimer see ./COPYING.
3
4 package gnu.kawa.lispexpr;
5 import gnu.text.Lexer;
6 import gnu.text.SyntaxException;
7
8 public abstract class ReadTableEntry
9 {
10   public static final ReadTableEntry whitespace
11     = new ReaderMisc(ReadTable.WHITESPACE);
12   public static final ReadTableEntry singleEscape
13     = new ReaderMisc(ReadTable.SINGLE_ESCAPE);
14   public static final ReadTableEntry multipleEscape
15     = new ReaderMisc(ReadTable.MULTIPLE_ESCAPE);
16   public static final ReadTableEntry constituent
17     = new ReaderMisc(ReadTable.CONSTITUENT);
18
19   public static ReadTableEntry getWhitespaceInstance()
20   { return whitespace; }
21   public static ReadTableEntry getSingleEscapeInstance()
22   { return singleEscape; }
23   public static ReadTableEntry getMultipleEscapeInstance()
24   { return multipleEscape; }
25   public static ReadTableEntry getDigitInstance()
26   { return constituent; }
27   public static ReadTableEntry getConstituentInstance()
28   { return constituent; }
29
30   public int getKind()
31   {
32     return ReadTable.TERMINATING_MACRO;
33   }
34
35   public Object JavaDoc read (Lexer in, int ch, int count)
36     throws java.io.IOException JavaDoc, SyntaxException
37   {
38     throw new Error JavaDoc("invalid character");
39   }
40
41 }
42
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