Source code for mwparserfromhell.nodes.argument

# Copyright (C) 2012-2020 Ben Kurtovic <ben.kurtovic@gmail.com>
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from ._base import Node
from ..utils import parse_anything

__all__ = ["Argument"]


[docs]class Argument(Node): """Represents a template argument substitution, like ``{{{foo}}}``.""" def __init__(self, name, default=None): super().__init__() self.name = name self.default = default def __str__(self): start = "{{{" + str(self.name) if self.default is not None: return start + "|" + str(self.default) + "}}}" return start + "}}}" def __children__(self): yield self.name if self.default is not None: yield self.default def __strip__(self, **kwargs): if self.default is not None: return self.default.strip_code(**kwargs) return None def __showtree__(self, write, get, mark): write("{{{") get(self.name) if self.default is not None: write(" | ") mark() get(self.default) write("}}}") @property def name(self): """The name of the argument to substitute.""" return self._name @property def default(self): """The default value to substitute if none is passed. This will be ``None`` if the argument wasn't defined with one. The MediaWiki parser handles this by rendering the argument itself in the result, complete braces. To have the argument render as nothing, set default to ``""`` (``{{{arg}}}`` vs. ``{{{arg|}}}``). """ return self._default @name.setter def name(self, value): self._name = parse_anything(value) @default.setter def default(self, default): if default is None: self._default = None else: self._default = parse_anything(default)