Re: Recursive Descent Parser

  paulyg@clara.net (Paul Groves) writes:
>And I agree with Stroustrup (which is nice :-) ), if you're writing a
>langauge as an exeriment - hand writing the parser is the only way to
>go.


The way I understand what Stroustroup wrote, is: with his constraints
(C compatibility etc.), using yacc was a bad choice.


If you are writing a language as an experiment, and are willing to fit
the syntax to the tools you use, using a parser generator is a good
idea; in this setting it's even more useful than with a given syntax.
Why? With a hand-written parser, every change in the language can
result in changes affecting significant parts of the parser (e.g.,
changes in the first-sets). The parser generator takes care of these
issues for you.


- anton
--
M. Anton Ertl Some things have to be seen to be believed
anton@mips.complang.tuwien.ac.at Most things have to be believed to be seen
http://www.complang.tuwien.ac.at/anton/home.html

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