[antlr-interest] Re: amount of reserved keywords

[Silvain Piree]

> This is not a solution, because with the parser rule 'keyword'
> all words "NATURAL", "JOIN", ... becomes reserved 
> keywords :) A good way would it be, if ANTLR gives the 
> posibility to  say, "attention, this is a non reserved keyword".

The solution works, I've used it often.

Given input:
    
    IF IF THEN

and grammar:

    statement: "if" identifier "then" ;
    identifier: IDENTIFIER | keyword ;
    keyword: "if" | "then" ;

works fine, whereas:

    statement: "if" IDENTIFIER "then" ;

wouldn't work.

Silvain




 

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