[antlr-interest] generated code not compilable.

[praveen_c]

For some reason when I use the charVocabulary option in the following 
grammar, I get code that CANNOT be compiled. When I remove it, I get 
compilable code. Is there something wrong in the grammar?

Any help would be greatly appreciated. Comments on the grammar are 
welcome.

---------------------------GRAMMAR FILE-------------------------------
header { package tom; }

class SimpleParser extends Parser;

template: (TEXT | TAG)+;

class SimpleLexer extends Lexer;
options {
    k=2;
    testLiterals=false;
    charVocabulary = '\3'..'\377' | '\u1000'..'\u1fff';
}

{
    public boolean isEndOfText() throws antlr.CharStreamException {
        char char1 = LA(1);
        if (char1 == '<') {
            char char2 = LA(2);
            if (char2 == '@') { // "<@"
                return true;
            } else if (char2 == '/') { // "</"
                //ignore any white space
                int i = forwardToNonWhiteSpace(3);

                if (
                    (LA(i++) == 'l') &&
                    (LA(i++) == 'o') &&
                    (LA(i++) == 'o') &&
                    (LA(i++) == 'p')
                   ) {
                   
                   //match whitespace.
                   i = forwardToNonWhiteSpace(i);

                   if (LA(i++) == '>') { // "</loop>"
                        return true;
                   } else {
                        return false;
                   }
               } else {
                    return false;
               }
            } else { // it began with '<' but doesn't have anything 
meaningful after that.
                return false;
            }
        } else if (char1 == EOF_CHAR) { //End-of-file reached, can't 
proceed further.
            return true;
        } else { //doesn't begin with '<', so it's a normal char, not 
a special one.
            return false;
        }
    }

    public int forwardToNonWhiteSpace(int i) throws 
antlr.CharStreamException {
        char c = LA(i);
        while ( (c==' ') || (c == '\t') || (c == '\n') ) {
            i++;
            c = LA(i);
        }
        return i;
    }
}

protected
WS : ( ' ' | '\t' | '\n' )* ;

TAG:     (options 
            {
                generateAmbigWarnings=false;
            }:
                "<@" 
                ( 
                    ("include") => INCLUDE { $setType(INCLUDE); } |
                    ("loop")    => LOOP { $setType(LOOP); } |
                    TEXT
                )
                '>'
        );

protected
INCLUDE: "include" ;

protected
LOOP: "loop" ;

protected
END_LOOP: "</" LOOP '>';

TEXT:   (END_LOOP) => END_LOOP { $setType(END_LOOP); } |
        (
        options 
            {
                generateAmbigWarnings=false;
            }:
            ( { !isEndOfText() }? . )* 
        );


 

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