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jedi-fork/jedi/api/keywords.py
2019-05-29 01:26:38 +02:00

92 lines
2.4 KiB
Python

import pydoc
from jedi.evaluate.utils import ignored
from jedi.evaluate.names import AbstractNameDefinition
try:
from pydoc_data import topics as pydoc_topics
except ImportError:
# Python 2
try:
import pydoc_topics
except ImportError:
# This is for Python 3 embeddable version, which dont have
# pydoc_data module in its file python3x.zip.
pydoc_topics = None
def get_operator(evaluator, string, pos):
return Keyword(evaluator, string, pos)
class KeywordName(AbstractNameDefinition):
api_type = u'keyword'
is_context_name = False
def __init__(self, evaluator, name):
self.evaluator = evaluator
self.string_name = name
self.parent_context = evaluator.builtins_module
def infer(self):
return [Keyword(self.evaluator, self.string_name, (0, 0))]
class Keyword(object):
api_type = u'keyword'
def __init__(self, evaluator, name, pos):
self.name = KeywordName(evaluator, name)
self.start_pos = pos
self.parent = evaluator.builtins_module
@property
def names(self):
""" For a `parsing.Name` like comparision """
return [self.name]
def py__doc__(self):
return imitate_pydoc(self.name.string_name)
def get_signatures(self):
# TODO this makes no sense, I think Keyword should somehow merge with
# Context to make it easier for the api/classes.py to deal with all
# of it.
return []
def __repr__(self):
return '<%s: %s>' % (type(self).__name__, self.name)
def imitate_pydoc(string):
"""
It's not possible to get the pydoc's without starting the annoying pager
stuff.
"""
if pydoc_topics is None:
return ''
# str needed because of possible unicode stuff in py2k (pydoc doesn't work
# with unicode strings)
string = str(string)
h = pydoc.help
with ignored(KeyError):
# try to access symbols
string = h.symbols[string]
string, _, related = string.partition(' ')
get_target = lambda s: h.topics.get(s, h.keywords.get(s))
while isinstance(string, str):
string = get_target(string)
try:
# is a tuple now
label, related = string
except TypeError:
return ''
try:
return pydoc_topics.topics[label].strip() if pydoc_topics else ''
except KeyError:
return ''