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# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
from inspect import ArgSpec, getargspec
from powerline.segments import Segment
def getconfigargspec(obj):
if hasattr(obj, 'powerline_origin'):
obj = obj.powerline_origin
else:
obj = obj
args = []
defaults = []
if isinstance(obj, Segment):
additional_args = obj.additional_args()
argspecobjs = obj.argspecobjs()
get_omitted_args = obj.omitted_args
else:
additional_args = ()
argspecobjs = ((None, obj),)
get_omitted_args = lambda *args: ()
for arg in additional_args:
args.append(arg[0])
if len(arg) > 1:
defaults.append(arg[1])
requires_segment_info = hasattr(obj, 'powerline_requires_segment_info')
requires_filesystem_watcher = hasattr(obj, 'powerline_requires_filesystem_watcher')
for name, method in argspecobjs:
argspec = getargspec(method)
omitted_args = get_omitted_args(name, method)
largs = len(argspec.args)
for i, arg in enumerate(reversed(argspec.args)):
if (
largs - (i + 1) in omitted_args
or arg in omitted_args
or arg == 'pl'
or arg == 'self'
or (arg == 'create_watcher' and requires_filesystem_watcher)
or (arg == 'segment_info' and requires_segment_info)
):
continue
if argspec.defaults and len(argspec.defaults) > i:
if arg in args:
idx = args.index(arg)
if len(args) - idx > len(defaults):
args.pop(idx)
else:
continue
default = argspec.defaults[-(i + 1)]
defaults.append(default)
args.append(arg)
else:
if arg not in args:
args.insert(0, arg)
return ArgSpec(args=args, varargs=None, keywords=None, defaults=tuple(defaults))
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