[antlr-interest] rule rewrite

[Fırat KÜÇÜK]

this is simple sample inline calculator grammar:

start : operation ((PLUS^ | MINUS^) operation)* ;
operation : NUMBER ((ASTERISK^ | SLASH^) NUMBER)* ;

but i need:

start : operation ((ADDITION^ | SUBTRACTION^) operation)*;

how can i rewrite this rules without changing rule.

i tried to seperate to 2 rules:

start : additionOperation | subtractionOperation
additionOperation : operation (PLUS operation)* -> ^(ADDITION operation+)
subtractionOperation : operation (MINUS operation)* -> ^(SUBTRACTION
operation+)

any solution?




-- 
Öğr. Gör. Fırat KÜÇÜK
ADAMYO Distance Learning
SAKARYA University / TURKEY
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