Package rxpy :: Package graph :: Module opcode :: Class Repeat

Class Repeat

A numerical repeat. This node is only present if the _STATEFUL flag was used during compilation (otherwise numerical repeats are rewritten as appropriate splits/loops).

begin is the minimum count value.
end is the maximum count value (None for open ranges).
lazy indicates that matching should be lazy if True.
next contains two values. next[1] is the expression to repeat; next[0] is the continuation of the match after repetition has finished.

Instance Methods

[hide private]

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

concatenate(self, next)
The given node is the next node in the sequence.

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.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, begin, end, lazy)
(Constructor)

source code

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

Overrides: object.__init__: (inherited documentation)

concatenate(self, next)

source code

The given node is the next node in the sequence.

This method is only called on complex nodes after "initial node assembly" is complete (complex nodes are assembled, then connected). It is also only called once.

Overrides: support.BaseNode.concatenate: (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 Repeat

__init__(self, begin, end, lazy) (Constructor)

concatenate(self, next)

__str__(self) (Informal representation operator)

size(self, groups)

visit(self, visitor, state=None)

init(self, begin, end, lazy)
(Constructor)

str(self)
(Informal representation operator)