I have multiple rules that are like
identifierList ^ identifier, ($, asParser trim, identifier) star
It parses a list of identifiers. The output is
#('abc' #(#($, 'def') #($, 'ghj')))
What I like to have is an output of
#( 'abc' 'def' 'ghj' )
I can produce this by changing the rule to
^ identifier , (($, asParser trim, identifier) ==> [:nodes| nodes second]) star ==> [:nodes| (Array with: nodes first) copyWithAll: nodes second ]
But now the rule is uglified. It doesn't work with flatten because I it would flatten all together and I want to have the identifiers separated. What would be useful is a "skip" keyword for the parser so that it is skipped for the output nodes (that would be something like ?: in perl regex). Are there some better way to do this?
thanks in advance,
Norbert
You probably like #separatedBy:
identifierList ^ identifier separatedBy: $, asParser trim
Now that does not remove the comma, but you get a flat list that you can easily filter.
Cheers, Lukas
On 17 June 2011 16:55, Norbert Hartl norbert@hartl.name wrote:
I have multiple rules that are like
identifierList ^ identifier, ($, asParser trim, identifier) star
It parses a list of identifiers. The output is
#('abc' #(#($, 'def') #($, 'ghj')))
What I like to have is an output of
#( 'abc' 'def' 'ghj' )
I can produce this by changing the rule to
^ identifier , (($, asParser trim, identifier) ==> [:nodes| nodes second]) star ==> [:nodes| (Array with: nodes first) copyWithAll: nodes second ]
But now the rule is uglified. It doesn't work with flatten because I it would flatten all together and I want to have the identifiers separated. What would be useful is a "skip" keyword for the parser so that it is skipped for the output nodes (that would be something like ?: in perl regex). Are there some better way to do this?
thanks in advance,
Norbert
Moose-dev mailing list Moose-dev@iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev
Am 17.06.2011 um 17:11 schrieb Lukas Renggli:
You probably like #separatedBy:
identifierList ^ identifier separatedBy: $, asParser trim
Now that does not remove the comma, but you get a flat list that you can easily filter.
Ah, much better indeed. So actually nice would be
identifierList ^ identifier separatedBy: $, asParser skip trim
:) Althoug skip is probably not the right word.
thanks,
Norbert
On 17 June 2011 16:55, Norbert Hartl norbert@hartl.name wrote:
I have multiple rules that are like
identifierList ^ identifier, ($, asParser trim, identifier) star
It parses a list of identifiers. The output is
#('abc' #(#($, 'def') #($, 'ghj')))
What I like to have is an output of
#( 'abc' 'def' 'ghj' )
I can produce this by changing the rule to
^ identifier , (($, asParser trim, identifier) ==> [:nodes| nodes second]) star ==> [:nodes| (Array with: nodes first) copyWithAll: nodes second ]But now the rule is uglified. It doesn't work with flatten because I it would flatten all together and I want to have the identifiers separated. What would be useful is a "skip" keyword for the parser so that it is skipped for the output nodes (that would be something like ?: in perl regex). Are there some better way to do this?
thanks in advance,
Norbert
Moose-dev mailing list Moose-dev@iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev
-- Lukas Renggli www.lukas-renggli.ch
Moose-dev mailing list Moose-dev@iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev
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Lukas Renggli -
Norbert Hartl