[antlr-interest] Confused about backtracking
franck102
franck102 at yahoo.com
Mon Nov 28 06:18:04 PST 2011
Christian wrote
>
> Hi,
>
> what is the error/exception message?
>
> Regards,
> Christian
>
>
MissingTokenException at the second '=', after parsing a=b.c as an
expression. The tail recursion on expr is causing it it seems, but that's a
real issue for me... here is a slightly modified version with the recursion
made explicit that has the same problem:
program
: statement* EOF
;
statement
: ID '=' expr
| sep
;
expr : ID ( '.' expr )*;
sep : ';' | '.';
--
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