[Haskell-beginners] Parsing

[Mike Houghton]

Hi Francesco,
Quick response! Thanks.

I see, so would it reduce to something like?
 many itemValue 

and originally I was thinking the data structure that it would parse into would be 

data Module = Module {— some record structure—}

but now it would be roughly like…

type Entry = (String, String)

data Module  = Module [Entry]

Thanks




> On 6 Mar 2016, at 09:30, Francesco Ariis <fa-ml at ariis.it> wrote:
> 
> On Sun, Mar 06, 2016 at 09:26:17AM +0000, Mike Houghton wrote:
>> Hi, I’m using Parsec to parse structured text and have some problems
>> with mandatory and optional text entries and the order in which they
>> occur.
>> For example:
>> 
>> module{
>> 
>>    name   = some string
>>    source = …
>> 
>>    dest              = …..
>>    bundle          = …
>>    bundle_dest = … 
>>    zip_name     = ….
>> 
>> }
> 
> Hello Mike,
>    I would personally keep it simple. Parse the (item, value) list
> and after that check if it is well formed (i.e. contains 'name' and
> 'source' values). If not, call `parserFail` with an appropriate
> message.
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