Package lepl :: Package matchers :: Module transform :: Class Transform
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Class Transform

source code


Apply a function to (stream_in, matcher)

Typically used via Apply and KApply.

Instance Methods [hide private]
 
__init__(self, matcher, function)
x.__init__(...) initializes x; see help(type(x)) for signature
source code
 
_match(self, stream_in)
Do the matching (return a generator that provides successive (result, stream) tuples).
source code
 
compose(self, function)
Create a new Transform that includes the extra processing.
source code
 
__iadd__(self, other)
Allow transforms to wrap Delayed in rewriting.
source code

Inherited from support.Transformable: tree_repr

Inherited from support.Transformable (private): _format_repr

Inherited from operators.OperatorMixin: __add__, __and__, __div__, __floordiv__, __ge__, __getitem__, __gt__, __invert__, __mod__, __or__, __pow__, __radd__, __rand__, __rdiv__, __rfloordiv__, __rmod__, __ror__, __rshift__, __rtruediv__, __truediv__, __xor__

Inherited from support.context.NamespaceMixin (private): _lookup

Inherited from core.config.ParserMixin: get_match, get_match_file, get_match_iterable, get_match_list, get_match_sequence, get_match_string, get_parse, get_parse_all, get_parse_file, get_parse_file_all, get_parse_iterable, get_parse_iterable_all, get_parse_list, get_parse_list_all, get_parse_sequence, get_parse_sequence_all, get_parse_string, get_parse_string_all, match, match_file, match_iterable, match_list, match_sequence, match_string, parse, parse_all, parse_file, parse_file_all, parse_iterable, parse_iterable_all, parse_list, parse_list_all, parse_sequence, parse_sequence_all, parse_string, parse_string_all

Inherited from core.config.ParserMixin (private): _raw_parser

Inherited from support.BaseMatcher: __repr__, __str__, clone, kargs, tree

Inherited from support.graph.ArgAsAttributeMixin: __iter__

Inherited from support.graph.PostorderWalkerMixin: postorder

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

Inherited from matcher.Matcher: indented_repr

Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, matcher, function)
(Constructor)

source code 
x.__init__(...) initializes x; see help(type(x)) for signature
Overrides: matcher.Matcher.__init__

_match(self, stream_in)

source code 

Do the matching (return a generator that provides successive (result, stream) tuples).

The protocol here allows functions to "veto" individual entries and also to "append" more results, but doesn't support insertion of additional results.

Decorators:
  • @tagged
Overrides: matcher.Matcher._match

compose(self, function)

source code 
Create a new Transform that includes the extra processing.
Overrides: support.Transformable.compose