Unnecessary parenthesis

[Henry Spencer]

> ... this is a weakness of RD parsers: the amount of
> work incurred by unnecessary parentheses is quite considerable, especially
> in a language such as C, with 15 levels of operator precedence....

Well, yes, *if* you implement the RD parser straight from the grammar and
do no optimization.  One can do better, at the price of greater complexity,
by explicitly looking for the simple cases.
-- 
Anyone who buys Wisconsin cheese is  |  Henry Spencer @ U of Toronto Zoology
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