[erlang-questions] parse_transform and error messages

denis <>
Fri Oct 31 18:49:40 CET 2008


You can do it by adding the term
{error, {Line, Module, Msg::io_list()}}
into the AST.

You can generate an error in a module, and look at the generated AST
to have an example.

Hope this helps
Denis

2008/10/31 Paul Guyot <>:
> Hello,
>
> Is there a way to generate nice error messages (and warnings) with
> parse_transform? I currently raise a custom error to make compilation
> fail, but the error message could be nicer.
>
> For example, I wish I could raise an undefined_module error, so it
> would print a message just like erl_lint does when -module attribute
> isn't defined.
>
> Paul
>
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