Questions tagged [lark]
6 questions
1
vote
1 answer
How do you make an "opposite" pattern? - Needed to define a grammar with lark
The regex [a-zA-Z-]+:: matches strings like one-name::.
I would like a regex that will do the opposite. Is there an "automated" way to build such a regex?
I can't just check the failure of the first regex, as I have to use a "negated" regex with…
projetmbc
- 1,332
- 11
- 26
1
vote
1 answer
Use lark to analyze reST markup language like sections
I would like to define one basic grammar such as to start to work with lark. Here is my M(not)WE.
from lark import Lark
GRAMMAR = r"""
?start: _NL* (day_heading)*
day_heading : "==" _NL day_nb _NL "==" _NL+ (paragraph _NL)*
day_nb :…
projetmbc
- 1,332
- 11
- 26
0
votes
0 answers
How to recursively read many include files with lark?
For this config file format:
# comments here
# next an empty commment line
#
include "parseconf/dir_with_many_files"
Thing1
"objname" {
InnerThing "inner_thing_name"
{
IP_Address = "10.12.14.1" Hostname = "abc.fred.com"
…
tuck1s
- 1,002
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0
votes
2 answers
Accept an optional substring with Lark's LALR(1) parser
I would like to use Lark to generate a standalone parser for a small rational language of mine. This needs to be a LALR(1) parser.
It should accept the following input:
(lorem) consectetur adipiscing elit
(lorem) [ipsum dolor sit amet] consectetur…
Aristide
- 3,606
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0
votes
1 answer
define statement only works if followed by an assignment in Lark grammar
I am creating a parser with Lark. The parser works fine for most of the tests I ran, but failed with the define keyword. It only works if it is followed by an assignement. define a = 10 works just fine, but define b is not treated as a define…
Mstrdav
- 91
- 1
- 5
0
votes
0 answers
Lark : Storing and/or passing data to Transformer
In Lark parser how do I pass out of bound data to the Transformer, so I can process the text differently based on the value of the argument f.e.. lets say I can modify the Parser, then i want a behavior as if ...
parser.parse(txt,…
sten
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