Package rxpy :: Package parser :: Module pattern :: Class LookaheadBuilder
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Class LookaheadBuilder

source code


Parse lookahead expressions of the form (?=...) and (?!...), along with lookback expressions (via LookbackBuilder).

If it's a reverse lookup we add an end of string matcher, but no prefix, so the matcher must be used to "search" if the start is not known.

Instance Methods [hide private]
 
__init__(self, state, sequence, equal, forwards)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
source code
 
_build_group(self) source code

Inherited from BaseGroupBuilder: append_character

Inherited from SequenceBuilder: __bool__, build_complete, build_dag, parse, parse_group

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, state, sequence, equal, forwards)
(Constructor)

source code 
x.__init__(...) initializes x; see x.__class__.__doc__ for signature
Overrides: object.__init__
(inherited documentation)

_build_group(self)

source code 
Overrides: BaseGroupBuilder._build_group