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Fix handling of optional values in _add_special_arg

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That way, we can pass None as a valid value.
This commit is contained in:
Florian Bruhin 2018-11-30 16:28:43 +01:00
parent 34aaca2aa0
commit 23d0dbd998
1 changed files with 11 additions and 13 deletions
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24
qutebrowser/commands/command.py
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@ -350,7 +350,7 @@ class Command:
raise ValueError("Invalid scope {}!".format(scope))
return objreg.get(name, scope=scope, window=win_id, tab=tab_id)
def _add_special_arg(self, *, value, param, args, kwargs, optional=False):
def _add_special_arg(self, *, value, param, args, kwargs):
"""Add a special argument value to a function call.
Arguments:
@ -358,18 +358,11 @@ class Command:
param: The parameter being filled.
args: The positional argument list. Gets modified directly.
kwargs: The keyword argument dict. Gets modified directly.
optional: Whether the value can be optional.
"""
if not optional:
assert value is not None
if param.kind == inspect.Parameter.POSITIONAL_OR_KEYWORD:
if value is not None:
args.append(value)
else:
args.append(param.default)
args.append(value)
elif param.kind == inspect.Parameter.KEYWORD_ONLY:
if value is not None:
kwargs[param.name] = value
kwargs[param.name] = value
else:
raise TypeError("{}: invalid parameter type {} for argument "
"{!r}!".format(self.name, param.kind, param.name))
@ -388,7 +381,7 @@ class Command:
tab = None
self._add_special_arg(value=tab, param=param, args=args,
kwargs=kwargs, optional=True)
kwargs=kwargs)
def _get_param_value(self, param):
"""Get the converted value for an inspect.Parameter."""
@ -451,8 +444,13 @@ class Command:
args=args, kwargs=kwargs)
continue
elif arg_info.value == usertypes.CommandValue.count:
self._add_special_arg(value=self._count, param=param,
args=args, kwargs=kwargs, optional=True)
if self._count is None:
assert param.default is not inspect.Parameter.empty
value = param.default
else:
value = self._count
self._add_special_arg(value=value, param=param,
args=args, kwargs=kwargs)
continue
elif arg_info.value == usertypes.CommandValue.win_id:
self._add_special_arg(value=win_id, param=param,