[antlr-interest] Is it because of buggy antlr?

[rmsanjivp <rmsanjivp at yahoo.com>]

Consider the following rules:

expr
 : e1 (PLUS | MINUS e1)*
 ;

e1
 : e0 ( POWER e1)? // to make POWER tree as right associative
 ;

e0: ID;


For the following parser the generated code in C++ when compiled and 
run gives unexpected token for input "P1 + p2"

If the right associative part is changed to

e1
 : e0 ( POWER e0)*
 ;

then all works fine except that the operator POWER is treated as 
right associative.

Any idea how to make an operator left associative?

Thanks,
Sanjiv


 

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