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mbj at nortelnetworks.com
Posted: Tue Oct 26, 2004 8:53 pm Reply with quote
Guest
Hi,

erl_syntax in R10B is not erl_parse compatible for 'try' expressions.

erl_syntax thinks a 'try' is {'try', Pos, Body, Claues, Handlers}, but
in erl_parse try is {'try', Pos, Body, Clause, Handlers, AfterExprs}
(see erl_parse.yrl:build_try)

Also, within erl_syntax.erl itself, the Body in the 'try' expression
is sometimes [synatx_tree()] and sometimes just syntax_tree(), which
makes it crash.

This makes distel:who_calls fail.

I've patched my local erl_syntax.erl to handle this, but that fix is
extremely ad-hoc.


/martin


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richardc at csd.uu.se
Posted: Tue Oct 26, 2004 9:03 pm Reply with quote
Guest
Martin Bjorklund wrote:

> erl_syntax in R10B is not erl_parse compatible for 'try' expressions.
>
> erl_syntax thinks a 'try' is {'try', Pos, Body, Claues, Handlers}, but
> in erl_parse try is {'try', Pos, Body, Clause, Handlers, AfterExprs}
> (see erl_parse.yrl:build_try)
>
> Also, within erl_syntax.erl itself, the Body in the 'try' expression
> is sometimes [synatx_tree()] and sometimes just syntax_tree(), which
> makes it crash.

Thanks for the details. I know I haven't had time to update the
syntax tools for R10. I hope it will be done at least until R10-2.
(Right now I'm working on exception handling in HiPE for R10-1.)

/Richard


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