Package rxpy :: Package graph :: Module opcode :: Class GroupConditional

Class GroupConditional

Branch the graph, depending on the existence of a group.

number is the group index.
label is used to generate an informative graph plot.
lazy is used during graph construction.
next contains two nodes. If the group exists, matching should continue with next[1], otherwise with next[0].

Instance Methods

__init__(self, number, label, lazy=True)
Subclasses should pay attention to the relationship between constructor kargs and attributes assumed in .clone. source code

__str__(self)
Subclasses must implement something useful here, which will be displayed in the graphviz node (see repr).

source code

size(self, groups)
The number of characters matched by this and subsequence nodes, if known, otherwise None.

source code

visit(self, visitor, state=None)
The visitor pattern - used to evaluate the graph by an interpreter, for example.

source code

Inherited from support.BaseSplitNode: concatenate

Inherited from support.BaseNode: __repr__, clone, consumer, deep_eq, start

Inherited from support.BaseNode (private): _kargs, _node_eq

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

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, number, label, lazy=True)
(Constructor)

source code

Subclasses should pay attention to the relationship between constructor kargs and attributes assumed in .clone.

Overrides: object.__init__: (inherited documentation)

str(self)
(Informal representation operator)

source code

Subclasses must implement something useful here, which will be displayed in the graphviz node (see repr).

Overrides: object.__str__: (inherited documentation)

size(self, groups)

source code

The number of characters matched by this and subsequence nodes, if known, otherwise None. Nodes must give a single, fixed number or None, so any loops should return None.

Overrides: support.BaseNode.size: (inherited documentation)

visit(self, visitor, state=None)

source code

The visitor pattern - used to evaluate the graph by an interpreter, for example. Calls back to the visitor via the interface described in rxpy.parser.visitor.Visitor.

Overrides: support.BaseNode.visit: (inherited documentation)

Class GroupConditional

__init__(self, number, label, lazy=True) (Constructor)

__str__(self) (Informal representation operator)

size(self, groups)

visit(self, visitor, state=None)

init(self, number, label, lazy=True)
(Constructor)

str(self)
(Informal representation operator)