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Java > Open Source Codes > org > javacc > parser > CharacterRange


1 /*
2  * Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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21  */
22
23 package org.javacc.parser;
24
25 /**
26  * Describes character range descriptors in a character list.
27  */
28
29 public class CharacterRange {
30
31   /**
32    * The line and column number of the construct that corresponds
33    * most closely to this node.
34    */
35   int line, column;
36
37   /**
38    * The leftmost and the rightmost characters in this character range.
39    */
40   public char left, right;
41
42   CharacterRange() { }
43
44   CharacterRange(char l, char r)
45   {
46      if (l > r)
47         JavaCCErrors.semantic_error(this, "Invalid range : \"" + (int)l + "\" - \""
48               + (int)r + "\". First character shoud be less than or equal to the second one in a range.");
49
50      left = l;
51      right = r;
52   }
53 }
54
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