22 Jun
2015
22 Jun
'15
12:59 p.m.
not sure what is the probleme exactly.
if you don't put any semantic action "==> [....]"
then the parser does not produce anything, no?
nicolas
On 22/06/2015 10:42, Peter Uhnák wrote:
Hi,
is it possible to add such a parser that would consume input, but
wouldn't return anything?
Right now I do things like...
MyParser>>rule
^ ($[ asParser, anotherRule, $] asParser) ==> [ :nodes | nodes
second ]
Of course when the rules are more complex, so is the block; however it
seems that this is how it's done in the example parsers...
So, would it be possible to add some kind of
Null/Void/Ignore/Throwaway parser, that would consume the input, but
would be omitted from the result?
so the above method could be written as
MyParser>>rule
^ $[ asNullPaser, anotherRule, $] asNullParser
or
MyParser>>rule
^ $[ asParser ignore, anotherRule, $[ asParser ignore
or something else.
Thanks,
Peter
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