This is how my current code looks like, it only supports a AND NOT b
. Is there a way to make it also return the same tree for a NOT b
? Any suggestions will be appreciated.
from lark import Lark
grammar = r'''
start: or_test
?or_test: and_test ("OR" and_test)*
?and_test: not_test ("AND" not_test)*
?not_test: "NOT" not_test -> not
| atom
atom: WORD -> term
| "(" or_test ")"
WORD: /[a-zA-Z0-9]+/
%import common.WS_INLINE
%ignore WS_INLINE
'''
parser = Lark(grammar)
s = 'NOT a AND b AND NOT c'
tree = parser.parse(s)
print(tree.pretty())
output
start
and_test
not
term a
term b
not
term c
I think that should do what you asked: