r : ID '#' {s = $ID.text; System.out.println("found "+s);} ;
Tow alternatives
1. take out '#' from ur file.g
or
2. Put it in ur input file. so it look like: b #
U should read about how it works. Jim did send u a link.
cheers,
2009/8/19 Ha Luong <haluon...@gmail.com>:
> Dear all,
>
> I'd like to catch the exception at the last token in the rule. I managed to
> test some rules to catch the last token mismatch but I couldn't do.
> Here is my test:
>
> 1. In "T.g" :
>
> grammar T;
> options {
> language=Java;
> }
> @members {
> String s;
> }
>
> // Alter code generation so catch-clauses get replace with
> // this action.
> @rulecatch {
>
> catch (RecognitionException e) {
> throw e;
>
> }
>
> }
> // END:override
>
> r : ID '#' {s = $ID.text; System.out.println("found "+s);} ;
> ID: 'a'..'z'+ ;
> WS: (' '|'\n'|'\r')+ {skip();} ; // ignore whitespace
>
> 2. In "input.txt":
> b
>
> 3. In "Test.java":
> import org.antlr.runtime.*;
>
> public class Test {
> public static void main(String[] args) throws Exception {
> //ANTLRInputStream input = new ANTLRInputStream(System.in);
> //TLexer lexer = new TLexer(input);
> TLexer lexer = new TLexer(new ANTLRFileStream("input.txt"));
> CommonTokenStream tokens = new CommonTokenStream(lexer);
> TParser parser = new TParser(tokens);
> try{
> parser.r();
> }
> catch (RecognitionException e) {
> System.out.println(e.getClass().toString());
> //e.printStackTrace();
> }
> }
> }
>
> 4. The output in console when I run Test:
> $ java Test
> line 0:-1 missing '#' at '<EOF>'
> found b
>
> I don't know why the last token mismatch couldn't catch in the main function
> of Test. Could you please help me?
>
> Thank you very much,
> Ha Luong
>
>
>
>
>
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