Oh my ...
You saved my hair! :)
Thanks a lot for your help and time.
On Monday, June 13, 2016 at 12:03:54 PM UTC+2, puzzler wrote:
>
> Looks like you left off a + in your regular expression for String.
>
> On Mon, Jun 13, 2016 at 2:59 AM, Hussein B. <hubag...@gmail.com
> <javascript:>> wrote:
>
>> Thanks for your help.
>>
>> I tried this new grammar to match characters only:
>>
>> "
>>
>> TEST = OBJECT
>>
>> <WHITESPACE> = <#'\\s+'>
>>
>> OBJECT = CURLY_OPEN WHITESPACE* STRING WHITESPACE* (WHITESPACE* OBJECT
>> WHITESPACE*)* CURLY_CLOSE
>>
>> <CURLY_OPEN> = <'{'>
>>
>> <CURLY_CLOSE> = <'}'>
>>
>> STRING = #'[a-zA-Z]'
>>
>> "
>>
>>
>> (parse "{harden {James}}")
>>
>>
>> Parse error at line 1, column 3:
>>
>> {harden {James}}
>>
>> ^
>>
>> Expected one of:
>>
>> "}" (followed by end-of-string)
>>
>> "{"
>>
>> #"\s+"
>>
>> On Sunday, June 12, 2016 at 10:07:01 PM UTC+2, puzzler wrote:
>>>
>>> Regular expressions are treated with their ordinary Java/Clojure, greedy
>>> semantics.
>>>
>>> Your regular expression for ITEM doesn't exclude whitespace or }
>>> characters, so ITEM is matching "Harden }" which leaves no characters left
>>> to match your grammar's right curly brace requirement.
>>>
>>> => (re-seq #"[^\"]+" "Harden }")
>>> ("Harden }")
>>>
>>> A solution would be to make the regex for ITEM more restrictive.
>>>
>>> On Sun, Jun 12, 2016 at 12:52 PM, Hussein B. <hubag...@gmail.com> wrote:
>>>
>>>> Hello,
>>>>
>>>> I'm playing around Instaparse library, starting very simple.
>>>>
>>>> For input like :
>>>>
>>>> { player }
>>>>
>>>> I created the following parser:
>>>>
>>>> (def ast
>>>> (ist/parser
>>>> "TEST = OBJECT
>>>> <WHITESPACE> = <#'\\s+'>
>>>> <CURLY_OPEN> = <'{'>
>>>> <CURLY_CLOSE> = <'}'>
>>>> ITEM = #'[^\"]+'
>>>> OBJECT = CURLY_OPEN WHITESPACE* ITEM WHITESPACE* CURLY_CLOSE"))
>>>>
>>>>
>>>> In the REPL:
>>>>
>>>> user=> (ast "{ Harden } ")
>>>>
>>>> Parse error at line 1, column 12:
>>>>
>>>> { Harden }
>>>>
>>>> ^
>>>>
>>>> Expected one of:
>>>>
>>>> "}" (followed by end-of-string)
>>>>
>>>> #"\s+"
>>>>
>>>>
>>>> Any ideas what I'm doing wrong?
>>>>
>>>> Thanks for help.
>>>>
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>>>
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>
>
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