[antlr-interest] cant find tokenRefBangTrack

[Terence Parr]

latest build emits a better error message I believe.
Ter
On Feb 18, 2008, at 11:16 AM, Brent Yates wrote:

> I have seen this before when mixing rewrite and !^ styles.  I  
> believe that if you remove the !'s it will work fine.  Also, it may  
> be a little clearer if you write the rule like this (unverified):
>
>  if_stmt    :  (IF LPAREN cond=expr RPAREN stmt=statement -> ^(IF  
> $cond $stmt) )
>                (ELSE elsestmt = statement -> ^( IFELSE  $cond    
> $stmt $elsestmt ) )?
>             ;
>
> Brent Yates
>
> On Feb 18, 2008 1:49 PM, Ian Moor <iwm at doc.ic.ac.uk> wrote:
> I am constructing a grammar for a very small subset of C and
> the section for the if statement, which is similar to the example in  
> the book
> generates an internal error :
>
>  error(10):  internal error: Pico.g :  
> java.lang.IllegalArgumentException: Can't find template  
> tokenRefBangTrack.st
>
> the code is
>  if_stmt    :  IF LPAREN! cond=expr RPAREN! stmt=statement
>              ( ( (ELSE) =>   ELSE) elsestmt = statement ->
>                  ^( IFELSE  $cond   $stmt $elsestmt )
>               | /* empty no else */  ->
>                  ^( IF $cond $stmt )
>
>              )             ;
>
> Without the rewrite rules the grammar compiles.
> Is there another way to do this ?
>  Ian W Moor                    Department of Computing,
> iwm at doc.ic.ac.uk           Imperial College.
>                                    180 Queensgate
>                                     London SW7 2AZ UK.
>
>
>
>

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