[erlang-questions] How to access functions type signatures?
Mon Aug 11 13:23:30 CEST 2008
Dimitry Golubovsky wrote:
> On Wed, Jul 30, 2008 at 10:12 AM, Joseph Wayne Norton
> <> wrote:
>> Dimitry -
>> If edoc specs are available, edoc can be used for this purpose. The
>> outputed xml can be parsed. There might be other (or better approaches).
> This way it works perfectly, thanks for the suggestion. What if edoc
> specs are not available (developer simply omitted them as they are not
> mandatory)? In some cases type spec may be written for a function with
> arity X, but omitted for arity X-1 and same name.
> There was some static type check tool for Erlang mentioned named TypEr
> : is it capable to produce such specs?
> Thank you.
>  http://www.erlang.se/workshop/2005/TypEr_Erlang05.pdf which means
> that it has been around for some time (since 2005): what is its
> current status?
Its current status is that it is part of Erlang/OTP R12B-*.
Typer. although a separate tool, is really a front-end to dialyzer.
It's really simple to use and it does most of what you want it to do.
You can use it by the command:
which will show the inferred types of all functions of module.erl.
For functions with -spec declarations, these declarations are trusted
and are output as is. It does not understand @edoc declarations though.
Comments and suggestions for improvements are welcome.
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