[antlr-interest] Rewriting Repeatable Prefix Operators To Nested AST Structure

[Jim Idle]

On Thu, 2008-10-02 at 12:24 -0700, Randall R Schulz wrote:

> Hi,
> 
> I have a couple of productions that use a prefix operator that may be
> repeated arbitrarily. One of them (negation) just has the operator
> symbol. The other has a keyword (two different keywords, actually)
> followed by an identifier.
> 
> For example, with the negation operator, this:
> 
> 	---p


rule : NEG^ rule
        | next_expr_in_precedence_stack
        ;

See things like the ^ operator in example grammars for right associative
things.

Jim
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