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# Copyright (C) 2011-2019 Patrick Totzke <patricktotzke@gmail.com>
# This file is released under the GNU GPL, version 3 or a later revision.
# For further details see the COPYING file
import abc
class Completer:
"""base class for completers"""
__metaclass__ = abc.ABCMeta
@abc.abstractmethod
def complete(self, original, pos):
"""returns a list of completions and cursor positions for the string
`original` from position `pos` on.
:param original: the string to complete
:type original: str
:param pos: starting position to complete from
:type pos: int
:returns: pairs of completed string and cursor position in the
new string
:rtype: list of (str, int)
:raises: :exc:`CompletionError`
"""
pass
def relevant_part(self, original, pos):
"""
Calculate the subword in a ' '-separated list of substrings of
`original` that `pos` is in.
"""
start = original.rfind(' ', 0, pos) + 1
end = original.find(' ', pos - 1)
if end == -1:
end = len(original)
return original[start:end], start, end, pos - start
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