[erlang-questions] Specs

James Churchman <>
Fri Jun 10 21:38:54 CEST 2011


Hi Kostis, i must have had an error in my specs then maybe, as otherwise
they i thought looked similar to yours, but were prefixed with the variable
name and "::"

Thanks very much for your help

James

On 7 June 2011 21:40, Kostis Sagonas <> wrote:

> James Churchman wrote:
>
>> Hi guys
>>
>> When you parse a file with the epp module it has no problems with specs
>>
>> However when using erl_scan then passing on to erl_parse, in order to
>> parse a string not a file, it fails on -specs in the code
>>
>> Is there a spec aware version of the erl_parse module ?
>>
>
> I find this question a bit strange... the erl_parse module *is* spec aware.
> This is actually how specs are parsed in the system.
>
> Does the following do what you want?
>
> 42> SpecInString = "-spec my_function(some_type()) -> 42 | 'gazonk'.",
> 42> {ok, Toks, 1} = erl_scan:string(SpecInString),
> 42> erl_parse:parse_form(Toks).
> {ok,{attribute,1,spec,
>               {{my_function,1},
>                [{type,1,'fun',
>                       [{type,1,product,[{type,1,some_type,[]}]},
>
> {type,1,union,[{integer,1,42},{atom,1,gazonk}]}]}]}}}
>
> Kostis
>
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