Lexicon.html

`Lexicon.java`

    // FILE. . . . . /home/hak/hlt/src/hlt/language/jaccapps/xml/sources/Lexicon.java
    // EDIT BY . . . Hassan Ait-Kaci
    // ON MACHINE. . Hp-Dv7
    // STARTED ON. . Fri Oct 19 22:55:13 2012

This is a simple lexicon class defining lexical units for the tokenizer in `Tokenizer.java`, for this Jacc application, which is meant to illustrate XML generation for language of simple expressions.
Author: |  | Hassan Aït-Kaci
Copyright: |  | © by the author
Version: |  | Last modified on Fri Oct 19 23:00:24 2012 by hak

    package hlt.xml;

    import java.util.HashMap;
    import java.util.HashSet;

    class Lexicon
    {

Returns `true` iff the specified string starts with a question mark, and every other character is alphanumeric or underscore.

      public final static boolean isVariable (String s)
        {
          char c = s.charAt(0);

          if (c != '?')
            return false;

          for (int i=1; i<s.length(); i++)
              {
                c = s.charAt(i);
                if (!Character.isLetterOrDigit(c) && c != '_')
                  return false;
              }

          return true;
        }

The following is a store for RCL reserved words.

      public static final HashSet reserved = new HashSet();

Returns `true` iff the specified string is a reserved RCL word.

      public final static boolean isReserved (String word)
        {
          return reserved.contains(word);
        }

Declares the specified string as a reserved word.

      static final void reserved (String word)
        {
          reserved.add(word);
        }

    }

This file was generated on Tue Jan 29 08:35:19 CET 2013 from file `Lexicon.java`
by the `hlt.language.tools.Hilite` Java tool written by Hassan Aït-Kaci