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- Subject: Re: parser : which library ?
- From: Miles Bader <miles@...>
- Date: Tue, 31 May 2011 13:06:30 +0900
Tony Finch <email@example.com> writes:
> LPEG is brilliant for small parsing tasks. Its main weakness is that it
> doesn't provide much help for error reporting and recovery. If the
> context of the code ensures that you don't have syntax errors,
> e.g. machine-generated strings or other tools to check for errors, then
> LPEG can get you a long way.
I use LPEG to parse "human input" stuff, and haven't found it to be
_that_ hard to offer basic error reporting, using periodic
synchronization tokens in the grammar, and a small set of convenience
functions (mapping string positions to line numbers, etc)...
It would be nice if LPEG provided a little more support, of course, but
even as it is, I think it's completely practical to use LPEG for
traditional parsing tasks that need error handling.
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