|
|
"""Completion for IPython.
|
|
|
|
|
|
This module started as fork of the rlcompleter module in the Python standard
|
|
|
library. The original enhancements made to rlcompleter have been sent
|
|
|
upstream and were accepted as of Python 2.3,
|
|
|
|
|
|
This module now support a wide variety of completion mechanism both available
|
|
|
for normal classic Python code, as well as completer for IPython specific
|
|
|
Syntax like magics.
|
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|
|
|
|
Latex and Unicode completion
|
|
|
============================
|
|
|
|
|
|
IPython and compatible frontends not only can complete your code, but can help
|
|
|
you to input a wide range of characters. In particular we allow you to insert
|
|
|
a unicode character using the tab completion mechanism.
|
|
|
|
|
|
Forward latex/unicode completion
|
|
|
--------------------------------
|
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|
|
|
Forward completion allows you to easily type a unicode character using its latex
|
|
|
name, or unicode long description. To do so type a backslash follow by the
|
|
|
relevant name and press tab:
|
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|
|
|
|
|
|
|
Using latex completion:
|
|
|
|
|
|
.. code::
|
|
|
|
|
|
\\alpha<tab>
|
|
|
α
|
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|
|
|
|
or using unicode completion:
|
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|
|
|
|
|
|
|
.. code::
|
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|
|
|
|
\\GREEK SMALL LETTER ALPHA<tab>
|
|
|
α
|
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|
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|
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|
|
Only valid Python identifiers will complete. Combining characters (like arrow or
|
|
|
dots) are also available, unlike latex they need to be put after the their
|
|
|
counterpart that is to say, ``F\\\\vec<tab>`` is correct, not ``\\\\vec<tab>F``.
|
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|
|
|
|
Some browsers are known to display combining characters incorrectly.
|
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|
|
|
|
Backward latex completion
|
|
|
-------------------------
|
|
|
|
|
|
It is sometime challenging to know how to type a character, if you are using
|
|
|
IPython, or any compatible frontend you can prepend backslash to the character
|
|
|
and press `<tab>` to expand it to its latex form.
|
|
|
|
|
|
.. code::
|
|
|
|
|
|
\\α<tab>
|
|
|
\\alpha
|
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|
|
Both forward and backward completions can be deactivated by setting the
|
|
|
``Completer.backslash_combining_completions`` option to ``False``.
|
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|
|
|
|
|
|
|
Experimental
|
|
|
============
|
|
|
|
|
|
Starting with IPython 6.0, this module can make use of the Jedi library to
|
|
|
generate completions both using static analysis of the code, and dynamically
|
|
|
inspecting multiple namespaces. Jedi is an autocompletion and static analysis
|
|
|
for Python. The APIs attached to this new mechanism is unstable and will
|
|
|
raise unless use in an :any:`provisionalcompleter` context manager.
|
|
|
|
|
|
You will find that the following are experimental:
|
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|
|
|
|
- :any:`provisionalcompleter`
|
|
|
- :any:`IPCompleter.completions`
|
|
|
- :any:`Completion`
|
|
|
- :any:`rectify_completions`
|
|
|
|
|
|
.. note::
|
|
|
|
|
|
better name for :any:`rectify_completions` ?
|
|
|
|
|
|
We welcome any feedback on these new API, and we also encourage you to try this
|
|
|
module in debug mode (start IPython with ``--Completer.debug=True``) in order
|
|
|
to have extra logging information if :any:`jedi` is crashing, or if current
|
|
|
IPython completer pending deprecations are returning results not yet handled
|
|
|
by :any:`jedi`
|
|
|
|
|
|
Using Jedi for tab completion allow snippets like the following to work without
|
|
|
having to execute any code:
|
|
|
|
|
|
>>> myvar = ['hello', 42]
|
|
|
... myvar[1].bi<tab>
|
|
|
|
|
|
Tab completion will be able to infer that ``myvar[1]`` is a real number without
|
|
|
executing any code unlike the previously available ``IPCompleter.greedy``
|
|
|
option.
|
|
|
|
|
|
Be sure to update :any:`jedi` to the latest stable version or to try the
|
|
|
current development version to get better completions.
|
|
|
"""
|
|
|
|
|
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# Some of this code originated from rlcompleter in the Python standard library
|
|
|
# Copyright (C) 2001 Python Software Foundation, www.python.org
|
|
|
|
|
|
|
|
|
import builtins as builtin_mod
|
|
|
import glob
|
|
|
import inspect
|
|
|
import itertools
|
|
|
import keyword
|
|
|
import os
|
|
|
import re
|
|
|
import string
|
|
|
import sys
|
|
|
import time
|
|
|
import unicodedata
|
|
|
import uuid
|
|
|
import warnings
|
|
|
from contextlib import contextmanager
|
|
|
from importlib import import_module
|
|
|
from types import SimpleNamespace
|
|
|
from typing import Iterable, Iterator, List, Tuple, Union, Any, Sequence, Dict, NamedTuple, Pattern, Optional
|
|
|
|
|
|
from IPython.core.error import TryNext
|
|
|
from IPython.core.inputtransformer2 import ESC_MAGIC
|
|
|
from IPython.core.latex_symbols import latex_symbols, reverse_latex_symbol
|
|
|
from IPython.core.oinspect import InspectColors
|
|
|
from IPython.testing.skipdoctest import skip_doctest
|
|
|
from IPython.utils import generics
|
|
|
from IPython.utils.dir2 import dir2, get_real_method
|
|
|
from IPython.utils.path import ensure_dir_exists
|
|
|
from IPython.utils.process import arg_split
|
|
|
from traitlets import Bool, Enum, Int, List as ListTrait, Unicode, default, observe
|
|
|
from traitlets.config.configurable import Configurable
|
|
|
|
|
|
import __main__
|
|
|
|
|
|
# skip module docstests
|
|
|
__skip_doctest__ = True
|
|
|
|
|
|
try:
|
|
|
import jedi
|
|
|
jedi.settings.case_insensitive_completion = False
|
|
|
import jedi.api.helpers
|
|
|
import jedi.api.classes
|
|
|
JEDI_INSTALLED = True
|
|
|
except ImportError:
|
|
|
JEDI_INSTALLED = False
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Globals
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# ranges where we have most of the valid unicode names. We could be more finer
|
|
|
# grained but is it worth it for performance While unicode have character in the
|
|
|
# range 0, 0x110000, we seem to have name for about 10% of those. (131808 as I
|
|
|
# write this). With below range we cover them all, with a density of ~67%
|
|
|
# biggest next gap we consider only adds up about 1% density and there are 600
|
|
|
# gaps that would need hard coding.
|
|
|
_UNICODE_RANGES = [(32, 0x3134b), (0xe0001, 0xe01f0)]
|
|
|
|
|
|
# Public API
|
|
|
__all__ = ['Completer','IPCompleter']
|
|
|
|
|
|
if sys.platform == 'win32':
|
|
|
PROTECTABLES = ' '
|
|
|
else:
|
|
|
PROTECTABLES = ' ()[]{}?=\\|;:\'#*"^&'
|
|
|
|
|
|
# Protect against returning an enormous number of completions which the frontend
|
|
|
# may have trouble processing.
|
|
|
MATCHES_LIMIT = 500
|
|
|
|
|
|
|
|
|
class ProvisionalCompleterWarning(FutureWarning):
|
|
|
"""
|
|
|
Exception raise by an experimental feature in this module.
|
|
|
|
|
|
Wrap code in :any:`provisionalcompleter` context manager if you
|
|
|
are certain you want to use an unstable feature.
|
|
|
"""
|
|
|
pass
|
|
|
|
|
|
warnings.filterwarnings('error', category=ProvisionalCompleterWarning)
|
|
|
|
|
|
|
|
|
@skip_doctest
|
|
|
@contextmanager
|
|
|
def provisionalcompleter(action='ignore'):
|
|
|
"""
|
|
|
This context manager has to be used in any place where unstable completer
|
|
|
behavior and API may be called.
|
|
|
|
|
|
>>> with provisionalcompleter():
|
|
|
... completer.do_experimental_things() # works
|
|
|
|
|
|
>>> completer.do_experimental_things() # raises.
|
|
|
|
|
|
.. note::
|
|
|
|
|
|
Unstable
|
|
|
|
|
|
By using this context manager you agree that the API in use may change
|
|
|
without warning, and that you won't complain if they do so.
|
|
|
|
|
|
You also understand that, if the API is not to your liking, you should report
|
|
|
a bug to explain your use case upstream.
|
|
|
|
|
|
We'll be happy to get your feedback, feature requests, and improvements on
|
|
|
any of the unstable APIs!
|
|
|
"""
|
|
|
with warnings.catch_warnings():
|
|
|
warnings.filterwarnings(action, category=ProvisionalCompleterWarning)
|
|
|
yield
|
|
|
|
|
|
|
|
|
def has_open_quotes(s):
|
|
|
"""Return whether a string has open quotes.
|
|
|
|
|
|
This simply counts whether the number of quote characters of either type in
|
|
|
the string is odd.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
If there is an open quote, the quote character is returned. Else, return
|
|
|
False.
|
|
|
"""
|
|
|
# We check " first, then ', so complex cases with nested quotes will get
|
|
|
# the " to take precedence.
|
|
|
if s.count('"') % 2:
|
|
|
return '"'
|
|
|
elif s.count("'") % 2:
|
|
|
return "'"
|
|
|
else:
|
|
|
return False
|
|
|
|
|
|
|
|
|
def protect_filename(s, protectables=PROTECTABLES):
|
|
|
"""Escape a string to protect certain characters."""
|
|
|
if set(s) & set(protectables):
|
|
|
if sys.platform == "win32":
|
|
|
return '"' + s + '"'
|
|
|
else:
|
|
|
return "".join(("\\" + c if c in protectables else c) for c in s)
|
|
|
else:
|
|
|
return s
|
|
|
|
|
|
|
|
|
def expand_user(path:str) -> Tuple[str, bool, str]:
|
|
|
"""Expand ``~``-style usernames in strings.
|
|
|
|
|
|
This is similar to :func:`os.path.expanduser`, but it computes and returns
|
|
|
extra information that will be useful if the input was being used in
|
|
|
computing completions, and you wish to return the completions with the
|
|
|
original '~' instead of its expanded value.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
path : str
|
|
|
String to be expanded. If no ~ is present, the output is the same as the
|
|
|
input.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
newpath : str
|
|
|
Result of ~ expansion in the input path.
|
|
|
tilde_expand : bool
|
|
|
Whether any expansion was performed or not.
|
|
|
tilde_val : str
|
|
|
The value that ~ was replaced with.
|
|
|
"""
|
|
|
# Default values
|
|
|
tilde_expand = False
|
|
|
tilde_val = ''
|
|
|
newpath = path
|
|
|
|
|
|
if path.startswith('~'):
|
|
|
tilde_expand = True
|
|
|
rest = len(path)-1
|
|
|
newpath = os.path.expanduser(path)
|
|
|
if rest:
|
|
|
tilde_val = newpath[:-rest]
|
|
|
else:
|
|
|
tilde_val = newpath
|
|
|
|
|
|
return newpath, tilde_expand, tilde_val
|
|
|
|
|
|
|
|
|
def compress_user(path:str, tilde_expand:bool, tilde_val:str) -> str:
|
|
|
"""Does the opposite of expand_user, with its outputs.
|
|
|
"""
|
|
|
if tilde_expand:
|
|
|
return path.replace(tilde_val, '~')
|
|
|
else:
|
|
|
return path
|
|
|
|
|
|
|
|
|
def completions_sorting_key(word):
|
|
|
"""key for sorting completions
|
|
|
|
|
|
This does several things:
|
|
|
|
|
|
- Demote any completions starting with underscores to the end
|
|
|
- Insert any %magic and %%cellmagic completions in the alphabetical order
|
|
|
by their name
|
|
|
"""
|
|
|
prio1, prio2 = 0, 0
|
|
|
|
|
|
if word.startswith('__'):
|
|
|
prio1 = 2
|
|
|
elif word.startswith('_'):
|
|
|
prio1 = 1
|
|
|
|
|
|
if word.endswith('='):
|
|
|
prio1 = -1
|
|
|
|
|
|
if word.startswith('%%'):
|
|
|
# If there's another % in there, this is something else, so leave it alone
|
|
|
if not "%" in word[2:]:
|
|
|
word = word[2:]
|
|
|
prio2 = 2
|
|
|
elif word.startswith('%'):
|
|
|
if not "%" in word[1:]:
|
|
|
word = word[1:]
|
|
|
prio2 = 1
|
|
|
|
|
|
return prio1, word, prio2
|
|
|
|
|
|
|
|
|
class _FakeJediCompletion:
|
|
|
"""
|
|
|
This is a workaround to communicate to the UI that Jedi has crashed and to
|
|
|
report a bug. Will be used only id :any:`IPCompleter.debug` is set to true.
|
|
|
|
|
|
Added in IPython 6.0 so should likely be removed for 7.0
|
|
|
|
|
|
"""
|
|
|
|
|
|
def __init__(self, name):
|
|
|
|
|
|
self.name = name
|
|
|
self.complete = name
|
|
|
self.type = 'crashed'
|
|
|
self.name_with_symbols = name
|
|
|
self.signature = ''
|
|
|
self._origin = 'fake'
|
|
|
|
|
|
def __repr__(self):
|
|
|
return '<Fake completion object jedi has crashed>'
|
|
|
|
|
|
|
|
|
class Completion:
|
|
|
"""
|
|
|
Completion object used and return by IPython completers.
|
|
|
|
|
|
.. warning::
|
|
|
|
|
|
Unstable
|
|
|
|
|
|
This function is unstable, API may change without warning.
|
|
|
It will also raise unless use in proper context manager.
|
|
|
|
|
|
This act as a middle ground :any:`Completion` object between the
|
|
|
:any:`jedi.api.classes.Completion` object and the Prompt Toolkit completion
|
|
|
object. While Jedi need a lot of information about evaluator and how the
|
|
|
code should be ran/inspected, PromptToolkit (and other frontend) mostly
|
|
|
need user facing information.
|
|
|
|
|
|
- Which range should be replaced replaced by what.
|
|
|
- Some metadata (like completion type), or meta information to displayed to
|
|
|
the use user.
|
|
|
|
|
|
For debugging purpose we can also store the origin of the completion (``jedi``,
|
|
|
``IPython.python_matches``, ``IPython.magics_matches``...).
|
|
|
"""
|
|
|
|
|
|
__slots__ = ['start', 'end', 'text', 'type', 'signature', '_origin']
|
|
|
|
|
|
def __init__(self, start: int, end: int, text: str, *, type: str=None, _origin='', signature='') -> None:
|
|
|
warnings.warn("``Completion`` is a provisional API (as of IPython 6.0). "
|
|
|
"It may change without warnings. "
|
|
|
"Use in corresponding context manager.",
|
|
|
category=ProvisionalCompleterWarning, stacklevel=2)
|
|
|
|
|
|
self.start = start
|
|
|
self.end = end
|
|
|
self.text = text
|
|
|
self.type = type
|
|
|
self.signature = signature
|
|
|
self._origin = _origin
|
|
|
|
|
|
def __repr__(self):
|
|
|
return '<Completion start=%s end=%s text=%r type=%r, signature=%r,>' % \
|
|
|
(self.start, self.end, self.text, self.type or '?', self.signature or '?')
|
|
|
|
|
|
def __eq__(self, other)->Bool:
|
|
|
"""
|
|
|
Equality and hash do not hash the type (as some completer may not be
|
|
|
able to infer the type), but are use to (partially) de-duplicate
|
|
|
completion.
|
|
|
|
|
|
Completely de-duplicating completion is a bit tricker that just
|
|
|
comparing as it depends on surrounding text, which Completions are not
|
|
|
aware of.
|
|
|
"""
|
|
|
return self.start == other.start and \
|
|
|
self.end == other.end and \
|
|
|
self.text == other.text
|
|
|
|
|
|
def __hash__(self):
|
|
|
return hash((self.start, self.end, self.text))
|
|
|
|
|
|
|
|
|
_IC = Iterable[Completion]
|
|
|
|
|
|
|
|
|
def _deduplicate_completions(text: str, completions: _IC)-> _IC:
|
|
|
"""
|
|
|
Deduplicate a set of completions.
|
|
|
|
|
|
.. warning::
|
|
|
|
|
|
Unstable
|
|
|
|
|
|
This function is unstable, API may change without warning.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
text : str
|
|
|
text that should be completed.
|
|
|
completions : Iterator[Completion]
|
|
|
iterator over the completions to deduplicate
|
|
|
|
|
|
Yields
|
|
|
------
|
|
|
`Completions` objects
|
|
|
Completions coming from multiple sources, may be different but end up having
|
|
|
the same effect when applied to ``text``. If this is the case, this will
|
|
|
consider completions as equal and only emit the first encountered.
|
|
|
Not folded in `completions()` yet for debugging purpose, and to detect when
|
|
|
the IPython completer does return things that Jedi does not, but should be
|
|
|
at some point.
|
|
|
"""
|
|
|
completions = list(completions)
|
|
|
if not completions:
|
|
|
return
|
|
|
|
|
|
new_start = min(c.start for c in completions)
|
|
|
new_end = max(c.end for c in completions)
|
|
|
|
|
|
seen = set()
|
|
|
for c in completions:
|
|
|
new_text = text[new_start:c.start] + c.text + text[c.end:new_end]
|
|
|
if new_text not in seen:
|
|
|
yield c
|
|
|
seen.add(new_text)
|
|
|
|
|
|
|
|
|
def rectify_completions(text: str, completions: _IC, *, _debug: bool = False) -> _IC:
|
|
|
"""
|
|
|
Rectify a set of completions to all have the same ``start`` and ``end``
|
|
|
|
|
|
.. warning::
|
|
|
|
|
|
Unstable
|
|
|
|
|
|
This function is unstable, API may change without warning.
|
|
|
It will also raise unless use in proper context manager.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
text : str
|
|
|
text that should be completed.
|
|
|
completions : Iterator[Completion]
|
|
|
iterator over the completions to rectify
|
|
|
_debug : bool
|
|
|
Log failed completion
|
|
|
|
|
|
Notes
|
|
|
-----
|
|
|
:any:`jedi.api.classes.Completion` s returned by Jedi may not have the same start and end, though
|
|
|
the Jupyter Protocol requires them to behave like so. This will readjust
|
|
|
the completion to have the same ``start`` and ``end`` by padding both
|
|
|
extremities with surrounding text.
|
|
|
|
|
|
During stabilisation should support a ``_debug`` option to log which
|
|
|
completion are return by the IPython completer and not found in Jedi in
|
|
|
order to make upstream bug report.
|
|
|
"""
|
|
|
warnings.warn("`rectify_completions` is a provisional API (as of IPython 6.0). "
|
|
|
"It may change without warnings. "
|
|
|
"Use in corresponding context manager.",
|
|
|
category=ProvisionalCompleterWarning, stacklevel=2)
|
|
|
|
|
|
completions = list(completions)
|
|
|
if not completions:
|
|
|
return
|
|
|
starts = (c.start for c in completions)
|
|
|
ends = (c.end for c in completions)
|
|
|
|
|
|
new_start = min(starts)
|
|
|
new_end = max(ends)
|
|
|
|
|
|
seen_jedi = set()
|
|
|
seen_python_matches = set()
|
|
|
for c in completions:
|
|
|
new_text = text[new_start:c.start] + c.text + text[c.end:new_end]
|
|
|
if c._origin == 'jedi':
|
|
|
seen_jedi.add(new_text)
|
|
|
elif c._origin == 'IPCompleter.python_matches':
|
|
|
seen_python_matches.add(new_text)
|
|
|
yield Completion(new_start, new_end, new_text, type=c.type, _origin=c._origin, signature=c.signature)
|
|
|
diff = seen_python_matches.difference(seen_jedi)
|
|
|
if diff and _debug:
|
|
|
print('IPython.python matches have extras:', diff)
|
|
|
|
|
|
|
|
|
if sys.platform == 'win32':
|
|
|
DELIMS = ' \t\n`!@#$^&*()=+[{]}|;\'",<>?'
|
|
|
else:
|
|
|
DELIMS = ' \t\n`!@#$^&*()=+[{]}\\|;:\'",<>?'
|
|
|
|
|
|
GREEDY_DELIMS = ' =\r\n'
|
|
|
|
|
|
|
|
|
class CompletionSplitter(object):
|
|
|
"""An object to split an input line in a manner similar to readline.
|
|
|
|
|
|
By having our own implementation, we can expose readline-like completion in
|
|
|
a uniform manner to all frontends. This object only needs to be given the
|
|
|
line of text to be split and the cursor position on said line, and it
|
|
|
returns the 'word' to be completed on at the cursor after splitting the
|
|
|
entire line.
|
|
|
|
|
|
What characters are used as splitting delimiters can be controlled by
|
|
|
setting the ``delims`` attribute (this is a property that internally
|
|
|
automatically builds the necessary regular expression)"""
|
|
|
|
|
|
# Private interface
|
|
|
|
|
|
# A string of delimiter characters. The default value makes sense for
|
|
|
# IPython's most typical usage patterns.
|
|
|
_delims = DELIMS
|
|
|
|
|
|
# The expression (a normal string) to be compiled into a regular expression
|
|
|
# for actual splitting. We store it as an attribute mostly for ease of
|
|
|
# debugging, since this type of code can be so tricky to debug.
|
|
|
_delim_expr = None
|
|
|
|
|
|
# The regular expression that does the actual splitting
|
|
|
_delim_re = None
|
|
|
|
|
|
def __init__(self, delims=None):
|
|
|
delims = CompletionSplitter._delims if delims is None else delims
|
|
|
self.delims = delims
|
|
|
|
|
|
@property
|
|
|
def delims(self):
|
|
|
"""Return the string of delimiter characters."""
|
|
|
return self._delims
|
|
|
|
|
|
@delims.setter
|
|
|
def delims(self, delims):
|
|
|
"""Set the delimiters for line splitting."""
|
|
|
expr = '[' + ''.join('\\'+ c for c in delims) + ']'
|
|
|
self._delim_re = re.compile(expr)
|
|
|
self._delims = delims
|
|
|
self._delim_expr = expr
|
|
|
|
|
|
def split_line(self, line, cursor_pos=None):
|
|
|
"""Split a line of text with a cursor at the given position.
|
|
|
"""
|
|
|
l = line if cursor_pos is None else line[:cursor_pos]
|
|
|
return self._delim_re.split(l)[-1]
|
|
|
|
|
|
|
|
|
|
|
|
class Completer(Configurable):
|
|
|
|
|
|
greedy = Bool(False,
|
|
|
help="""Activate greedy completion
|
|
|
PENDING DEPRECATION. this is now mostly taken care of with Jedi.
|
|
|
|
|
|
This will enable completion on elements of lists, results of function calls, etc.,
|
|
|
but can be unsafe because the code is actually evaluated on TAB.
|
|
|
"""
|
|
|
).tag(config=True)
|
|
|
|
|
|
use_jedi = Bool(default_value=JEDI_INSTALLED,
|
|
|
help="Experimental: Use Jedi to generate autocompletions. "
|
|
|
"Default to True if jedi is installed.").tag(config=True)
|
|
|
|
|
|
jedi_compute_type_timeout = Int(default_value=400,
|
|
|
help="""Experimental: restrict time (in milliseconds) during which Jedi can compute types.
|
|
|
Set to 0 to stop computing types. Non-zero value lower than 100ms may hurt
|
|
|
performance by preventing jedi to build its cache.
|
|
|
""").tag(config=True)
|
|
|
|
|
|
debug = Bool(default_value=False,
|
|
|
help='Enable debug for the Completer. Mostly print extra '
|
|
|
'information for experimental jedi integration.')\
|
|
|
.tag(config=True)
|
|
|
|
|
|
backslash_combining_completions = Bool(True,
|
|
|
help="Enable unicode completions, e.g. \\alpha<tab> . "
|
|
|
"Includes completion of latex commands, unicode names, and expanding "
|
|
|
"unicode characters back to latex commands.").tag(config=True)
|
|
|
|
|
|
def __init__(self, namespace=None, global_namespace=None, **kwargs):
|
|
|
"""Create a new completer for the command line.
|
|
|
|
|
|
Completer(namespace=ns, global_namespace=ns2) -> completer instance.
|
|
|
|
|
|
If unspecified, the default namespace where completions are performed
|
|
|
is __main__ (technically, __main__.__dict__). Namespaces should be
|
|
|
given as dictionaries.
|
|
|
|
|
|
An optional second namespace can be given. This allows the completer
|
|
|
to handle cases where both the local and global scopes need to be
|
|
|
distinguished.
|
|
|
"""
|
|
|
|
|
|
# Don't bind to namespace quite yet, but flag whether the user wants a
|
|
|
# specific namespace or to use __main__.__dict__. This will allow us
|
|
|
# to bind to __main__.__dict__ at completion time, not now.
|
|
|
if namespace is None:
|
|
|
self.use_main_ns = True
|
|
|
else:
|
|
|
self.use_main_ns = False
|
|
|
self.namespace = namespace
|
|
|
|
|
|
# The global namespace, if given, can be bound directly
|
|
|
if global_namespace is None:
|
|
|
self.global_namespace = {}
|
|
|
else:
|
|
|
self.global_namespace = global_namespace
|
|
|
|
|
|
self.custom_matchers = []
|
|
|
|
|
|
super(Completer, self).__init__(**kwargs)
|
|
|
|
|
|
def complete(self, text, state):
|
|
|
"""Return the next possible completion for 'text'.
|
|
|
|
|
|
This is called successively with state == 0, 1, 2, ... until it
|
|
|
returns None. The completion should begin with 'text'.
|
|
|
|
|
|
"""
|
|
|
if self.use_main_ns:
|
|
|
self.namespace = __main__.__dict__
|
|
|
|
|
|
if state == 0:
|
|
|
if "." in text:
|
|
|
self.matches = self.attr_matches(text)
|
|
|
else:
|
|
|
self.matches = self.global_matches(text)
|
|
|
try:
|
|
|
return self.matches[state]
|
|
|
except IndexError:
|
|
|
return None
|
|
|
|
|
|
def global_matches(self, text):
|
|
|
"""Compute matches when text is a simple name.
|
|
|
|
|
|
Return a list of all keywords, built-in functions and names currently
|
|
|
defined in self.namespace or self.global_namespace that match.
|
|
|
|
|
|
"""
|
|
|
matches = []
|
|
|
match_append = matches.append
|
|
|
n = len(text)
|
|
|
for lst in [keyword.kwlist,
|
|
|
builtin_mod.__dict__.keys(),
|
|
|
self.namespace.keys(),
|
|
|
self.global_namespace.keys()]:
|
|
|
for word in lst:
|
|
|
if word[:n] == text and word != "__builtins__":
|
|
|
match_append(word)
|
|
|
|
|
|
snake_case_re = re.compile(r"[^_]+(_[^_]+)+?\Z")
|
|
|
for lst in [self.namespace.keys(),
|
|
|
self.global_namespace.keys()]:
|
|
|
shortened = {"_".join([sub[0] for sub in word.split('_')]) : word
|
|
|
for word in lst if snake_case_re.match(word)}
|
|
|
for word in shortened.keys():
|
|
|
if word[:n] == text and word != "__builtins__":
|
|
|
match_append(shortened[word])
|
|
|
return matches
|
|
|
|
|
|
def attr_matches(self, text):
|
|
|
"""Compute matches when text contains a dot.
|
|
|
|
|
|
Assuming the text is of the form NAME.NAME....[NAME], and is
|
|
|
evaluatable in self.namespace or self.global_namespace, it will be
|
|
|
evaluated and its attributes (as revealed by dir()) are used as
|
|
|
possible completions. (For class instances, class members are
|
|
|
also considered.)
|
|
|
|
|
|
WARNING: this can still invoke arbitrary C code, if an object
|
|
|
with a __getattr__ hook is evaluated.
|
|
|
|
|
|
"""
|
|
|
|
|
|
# Another option, seems to work great. Catches things like ''.<tab>
|
|
|
m = re.match(r"(\S+(\.\w+)*)\.(\w*)$", text)
|
|
|
|
|
|
if m:
|
|
|
expr, attr = m.group(1, 3)
|
|
|
elif self.greedy:
|
|
|
m2 = re.match(r"(.+)\.(\w*)$", self.line_buffer)
|
|
|
if not m2:
|
|
|
return []
|
|
|
expr, attr = m2.group(1,2)
|
|
|
else:
|
|
|
return []
|
|
|
|
|
|
try:
|
|
|
obj = eval(expr, self.namespace)
|
|
|
except:
|
|
|
try:
|
|
|
obj = eval(expr, self.global_namespace)
|
|
|
except:
|
|
|
return []
|
|
|
|
|
|
if self.limit_to__all__ and hasattr(obj, '__all__'):
|
|
|
words = get__all__entries(obj)
|
|
|
else:
|
|
|
words = dir2(obj)
|
|
|
|
|
|
try:
|
|
|
words = generics.complete_object(obj, words)
|
|
|
except TryNext:
|
|
|
pass
|
|
|
except AssertionError:
|
|
|
raise
|
|
|
except Exception:
|
|
|
# Silence errors from completion function
|
|
|
#raise # dbg
|
|
|
pass
|
|
|
# Build match list to return
|
|
|
n = len(attr)
|
|
|
return [u"%s.%s" % (expr, w) for w in words if w[:n] == attr ]
|
|
|
|
|
|
|
|
|
def get__all__entries(obj):
|
|
|
"""returns the strings in the __all__ attribute"""
|
|
|
try:
|
|
|
words = getattr(obj, '__all__')
|
|
|
except:
|
|
|
return []
|
|
|
|
|
|
return [w for w in words if isinstance(w, str)]
|
|
|
|
|
|
|
|
|
def match_dict_keys(keys: List[Union[str, bytes, Tuple[Union[str, bytes]]]], prefix: str, delims: str,
|
|
|
extra_prefix: Optional[Tuple[str, bytes]]=None) -> Tuple[str, int, List[str]]:
|
|
|
"""Used by dict_key_matches, matching the prefix to a list of keys
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
keys
|
|
|
list of keys in dictionary currently being completed.
|
|
|
prefix
|
|
|
Part of the text already typed by the user. E.g. `mydict[b'fo`
|
|
|
delims
|
|
|
String of delimiters to consider when finding the current key.
|
|
|
extra_prefix : optional
|
|
|
Part of the text already typed in multi-key index cases. E.g. for
|
|
|
`mydict['foo', "bar", 'b`, this would be `('foo', 'bar')`.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
A tuple of three elements: ``quote``, ``token_start``, ``matched``, with
|
|
|
``quote`` being the quote that need to be used to close current string.
|
|
|
``token_start`` the position where the replacement should start occurring,
|
|
|
``matches`` a list of replacement/completion
|
|
|
|
|
|
"""
|
|
|
prefix_tuple = extra_prefix if extra_prefix else ()
|
|
|
Nprefix = len(prefix_tuple)
|
|
|
def filter_prefix_tuple(key):
|
|
|
# Reject too short keys
|
|
|
if len(key) <= Nprefix:
|
|
|
return False
|
|
|
# Reject keys with non str/bytes in it
|
|
|
for k in key:
|
|
|
if not isinstance(k, (str, bytes)):
|
|
|
return False
|
|
|
# Reject keys that do not match the prefix
|
|
|
for k, pt in zip(key, prefix_tuple):
|
|
|
if k != pt:
|
|
|
return False
|
|
|
# All checks passed!
|
|
|
return True
|
|
|
|
|
|
filtered_keys:List[Union[str,bytes]] = []
|
|
|
def _add_to_filtered_keys(key):
|
|
|
if isinstance(key, (str, bytes)):
|
|
|
filtered_keys.append(key)
|
|
|
|
|
|
for k in keys:
|
|
|
if isinstance(k, tuple):
|
|
|
if filter_prefix_tuple(k):
|
|
|
_add_to_filtered_keys(k[Nprefix])
|
|
|
else:
|
|
|
_add_to_filtered_keys(k)
|
|
|
|
|
|
if not prefix:
|
|
|
return '', 0, [repr(k) for k in filtered_keys]
|
|
|
quote_match = re.search('["\']', prefix)
|
|
|
assert quote_match is not None # silence mypy
|
|
|
quote = quote_match.group()
|
|
|
try:
|
|
|
prefix_str = eval(prefix + quote, {})
|
|
|
except Exception:
|
|
|
return '', 0, []
|
|
|
|
|
|
pattern = '[^' + ''.join('\\' + c for c in delims) + ']*$'
|
|
|
token_match = re.search(pattern, prefix, re.UNICODE)
|
|
|
assert token_match is not None # silence mypy
|
|
|
token_start = token_match.start()
|
|
|
token_prefix = token_match.group()
|
|
|
|
|
|
matched:List[str] = []
|
|
|
for key in filtered_keys:
|
|
|
try:
|
|
|
if not key.startswith(prefix_str):
|
|
|
continue
|
|
|
except (AttributeError, TypeError, UnicodeError):
|
|
|
# Python 3+ TypeError on b'a'.startswith('a') or vice-versa
|
|
|
continue
|
|
|
|
|
|
# reformat remainder of key to begin with prefix
|
|
|
rem = key[len(prefix_str):]
|
|
|
# force repr wrapped in '
|
|
|
rem_repr = repr(rem + '"') if isinstance(rem, str) else repr(rem + b'"')
|
|
|
rem_repr = rem_repr[1 + rem_repr.index("'"):-2]
|
|
|
if quote == '"':
|
|
|
# The entered prefix is quoted with ",
|
|
|
# but the match is quoted with '.
|
|
|
# A contained " hence needs escaping for comparison:
|
|
|
rem_repr = rem_repr.replace('"', '\\"')
|
|
|
|
|
|
# then reinsert prefix from start of token
|
|
|
matched.append('%s%s' % (token_prefix, rem_repr))
|
|
|
return quote, token_start, matched
|
|
|
|
|
|
|
|
|
def cursor_to_position(text:str, line:int, column:int)->int:
|
|
|
"""
|
|
|
Convert the (line,column) position of the cursor in text to an offset in a
|
|
|
string.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
text : str
|
|
|
The text in which to calculate the cursor offset
|
|
|
line : int
|
|
|
Line of the cursor; 0-indexed
|
|
|
column : int
|
|
|
Column of the cursor 0-indexed
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
Position of the cursor in ``text``, 0-indexed.
|
|
|
|
|
|
See Also
|
|
|
--------
|
|
|
position_to_cursor : reciprocal of this function
|
|
|
|
|
|
"""
|
|
|
lines = text.split('\n')
|
|
|
assert line <= len(lines), '{} <= {}'.format(str(line), str(len(lines)))
|
|
|
|
|
|
return sum(len(l) + 1 for l in lines[:line]) + column
|
|
|
|
|
|
def position_to_cursor(text:str, offset:int)->Tuple[int, int]:
|
|
|
"""
|
|
|
Convert the position of the cursor in text (0 indexed) to a line
|
|
|
number(0-indexed) and a column number (0-indexed) pair
|
|
|
|
|
|
Position should be a valid position in ``text``.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
text : str
|
|
|
The text in which to calculate the cursor offset
|
|
|
offset : int
|
|
|
Position of the cursor in ``text``, 0-indexed.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
(line, column) : (int, int)
|
|
|
Line of the cursor; 0-indexed, column of the cursor 0-indexed
|
|
|
|
|
|
See Also
|
|
|
--------
|
|
|
cursor_to_position : reciprocal of this function
|
|
|
|
|
|
"""
|
|
|
|
|
|
assert 0 <= offset <= len(text) , "0 <= %s <= %s" % (offset , len(text))
|
|
|
|
|
|
before = text[:offset]
|
|
|
blines = before.split('\n') # ! splitnes trim trailing \n
|
|
|
line = before.count('\n')
|
|
|
col = len(blines[-1])
|
|
|
return line, col
|
|
|
|
|
|
|
|
|
def _safe_isinstance(obj, module, class_name):
|
|
|
"""Checks if obj is an instance of module.class_name if loaded
|
|
|
"""
|
|
|
return (module in sys.modules and
|
|
|
isinstance(obj, getattr(import_module(module), class_name)))
|
|
|
|
|
|
def back_unicode_name_matches(text:str) -> Tuple[str, Sequence[str]]:
|
|
|
"""Match Unicode characters back to Unicode name
|
|
|
|
|
|
This does ``☃`` -> ``\\snowman``
|
|
|
|
|
|
Note that snowman is not a valid python3 combining character but will be expanded.
|
|
|
Though it will not recombine back to the snowman character by the completion machinery.
|
|
|
|
|
|
This will not either back-complete standard sequences like \\n, \\b ...
|
|
|
|
|
|
Returns
|
|
|
=======
|
|
|
|
|
|
Return a tuple with two elements:
|
|
|
|
|
|
- The Unicode character that was matched (preceded with a backslash), or
|
|
|
empty string,
|
|
|
- a sequence (of 1), name for the match Unicode character, preceded by
|
|
|
backslash, or empty if no match.
|
|
|
|
|
|
"""
|
|
|
if len(text)<2:
|
|
|
return '', ()
|
|
|
maybe_slash = text[-2]
|
|
|
if maybe_slash != '\\':
|
|
|
return '', ()
|
|
|
|
|
|
char = text[-1]
|
|
|
# no expand on quote for completion in strings.
|
|
|
# nor backcomplete standard ascii keys
|
|
|
if char in string.ascii_letters or char in ('"',"'"):
|
|
|
return '', ()
|
|
|
try :
|
|
|
unic = unicodedata.name(char)
|
|
|
return '\\'+char,('\\'+unic,)
|
|
|
except KeyError:
|
|
|
pass
|
|
|
return '', ()
|
|
|
|
|
|
def back_latex_name_matches(text:str) -> Tuple[str, Sequence[str]] :
|
|
|
"""Match latex characters back to unicode name
|
|
|
|
|
|
This does ``\\ℵ`` -> ``\\aleph``
|
|
|
|
|
|
"""
|
|
|
if len(text)<2:
|
|
|
return '', ()
|
|
|
maybe_slash = text[-2]
|
|
|
if maybe_slash != '\\':
|
|
|
return '', ()
|
|
|
|
|
|
|
|
|
char = text[-1]
|
|
|
# no expand on quote for completion in strings.
|
|
|
# nor backcomplete standard ascii keys
|
|
|
if char in string.ascii_letters or char in ('"',"'"):
|
|
|
return '', ()
|
|
|
try :
|
|
|
latex = reverse_latex_symbol[char]
|
|
|
# '\\' replace the \ as well
|
|
|
return '\\'+char,[latex]
|
|
|
except KeyError:
|
|
|
pass
|
|
|
return '', ()
|
|
|
|
|
|
|
|
|
def _formatparamchildren(parameter) -> str:
|
|
|
"""
|
|
|
Get parameter name and value from Jedi Private API
|
|
|
|
|
|
Jedi does not expose a simple way to get `param=value` from its API.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
parameter
|
|
|
Jedi's function `Param`
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
A string like 'a', 'b=1', '*args', '**kwargs'
|
|
|
|
|
|
"""
|
|
|
description = parameter.description
|
|
|
if not description.startswith('param '):
|
|
|
raise ValueError('Jedi function parameter description have change format.'
|
|
|
'Expected "param ...", found %r".' % description)
|
|
|
return description[6:]
|
|
|
|
|
|
def _make_signature(completion)-> str:
|
|
|
"""
|
|
|
Make the signature from a jedi completion
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
completion : jedi.Completion
|
|
|
object does not complete a function type
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
a string consisting of the function signature, with the parenthesis but
|
|
|
without the function name. example:
|
|
|
`(a, *args, b=1, **kwargs)`
|
|
|
|
|
|
"""
|
|
|
|
|
|
# it looks like this might work on jedi 0.17
|
|
|
if hasattr(completion, 'get_signatures'):
|
|
|
signatures = completion.get_signatures()
|
|
|
if not signatures:
|
|
|
return '(?)'
|
|
|
|
|
|
c0 = completion.get_signatures()[0]
|
|
|
return '('+c0.to_string().split('(', maxsplit=1)[1]
|
|
|
|
|
|
return '(%s)'% ', '.join([f for f in (_formatparamchildren(p) for signature in completion.get_signatures()
|
|
|
for p in signature.defined_names()) if f])
|
|
|
|
|
|
|
|
|
class _CompleteResult(NamedTuple):
|
|
|
matched_text : str
|
|
|
matches: Sequence[str]
|
|
|
matches_origin: Sequence[str]
|
|
|
jedi_matches: Any
|
|
|
|
|
|
|
|
|
class IPCompleter(Completer):
|
|
|
"""Extension of the completer class with IPython-specific features"""
|
|
|
|
|
|
__dict_key_regexps: Optional[Dict[bool,Pattern]] = None
|
|
|
|
|
|
@observe('greedy')
|
|
|
def _greedy_changed(self, change):
|
|
|
"""update the splitter and readline delims when greedy is changed"""
|
|
|
if change['new']:
|
|
|
self.splitter.delims = GREEDY_DELIMS
|
|
|
else:
|
|
|
self.splitter.delims = DELIMS
|
|
|
|
|
|
dict_keys_only = Bool(False,
|
|
|
help="""Whether to show dict key matches only""")
|
|
|
|
|
|
merge_completions = Bool(True,
|
|
|
help="""Whether to merge completion results into a single list
|
|
|
|
|
|
If False, only the completion results from the first non-empty
|
|
|
completer will be returned.
|
|
|
"""
|
|
|
).tag(config=True)
|
|
|
omit__names = Enum((0,1,2), default_value=2,
|
|
|
help="""Instruct the completer to omit private method names
|
|
|
|
|
|
Specifically, when completing on ``object.<tab>``.
|
|
|
|
|
|
When 2 [default]: all names that start with '_' will be excluded.
|
|
|
|
|
|
When 1: all 'magic' names (``__foo__``) will be excluded.
|
|
|
|
|
|
When 0: nothing will be excluded.
|
|
|
"""
|
|
|
).tag(config=True)
|
|
|
limit_to__all__ = Bool(False,
|
|
|
help="""
|
|
|
DEPRECATED as of version 5.0.
|
|
|
|
|
|
Instruct the completer to use __all__ for the completion
|
|
|
|
|
|
Specifically, when completing on ``object.<tab>``.
|
|
|
|
|
|
When True: only those names in obj.__all__ will be included.
|
|
|
|
|
|
When False [default]: the __all__ attribute is ignored
|
|
|
""",
|
|
|
).tag(config=True)
|
|
|
|
|
|
profile_completions = Bool(
|
|
|
default_value=False,
|
|
|
help="If True, emit profiling data for completion subsystem using cProfile."
|
|
|
).tag(config=True)
|
|
|
|
|
|
profiler_output_dir = Unicode(
|
|
|
default_value=".completion_profiles",
|
|
|
help="Template for path at which to output profile data for completions."
|
|
|
).tag(config=True)
|
|
|
|
|
|
@observe('limit_to__all__')
|
|
|
def _limit_to_all_changed(self, change):
|
|
|
warnings.warn('`IPython.core.IPCompleter.limit_to__all__` configuration '
|
|
|
'value has been deprecated since IPython 5.0, will be made to have '
|
|
|
'no effects and then removed in future version of IPython.',
|
|
|
UserWarning)
|
|
|
|
|
|
def __init__(
|
|
|
self, shell=None, namespace=None, global_namespace=None, config=None, **kwargs
|
|
|
):
|
|
|
"""IPCompleter() -> completer
|
|
|
|
|
|
Return a completer object.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
shell
|
|
|
a pointer to the ipython shell itself. This is needed
|
|
|
because this completer knows about magic functions, and those can
|
|
|
only be accessed via the ipython instance.
|
|
|
namespace : dict, optional
|
|
|
an optional dict where completions are performed.
|
|
|
global_namespace : dict, optional
|
|
|
secondary optional dict for completions, to
|
|
|
handle cases (such as IPython embedded inside functions) where
|
|
|
both Python scopes are visible.
|
|
|
config : Config
|
|
|
traitlet's config object
|
|
|
**kwargs
|
|
|
passed to super class unmodified.
|
|
|
"""
|
|
|
|
|
|
self.magic_escape = ESC_MAGIC
|
|
|
self.splitter = CompletionSplitter()
|
|
|
|
|
|
# _greedy_changed() depends on splitter and readline being defined:
|
|
|
super().__init__(
|
|
|
namespace=namespace,
|
|
|
global_namespace=global_namespace,
|
|
|
config=config,
|
|
|
**kwargs
|
|
|
)
|
|
|
|
|
|
# List where completion matches will be stored
|
|
|
self.matches = []
|
|
|
self.shell = shell
|
|
|
# Regexp to split filenames with spaces in them
|
|
|
self.space_name_re = re.compile(r'([^\\] )')
|
|
|
# Hold a local ref. to glob.glob for speed
|
|
|
self.glob = glob.glob
|
|
|
|
|
|
# Determine if we are running on 'dumb' terminals, like (X)Emacs
|
|
|
# buffers, to avoid completion problems.
|
|
|
term = os.environ.get('TERM','xterm')
|
|
|
self.dumb_terminal = term in ['dumb','emacs']
|
|
|
|
|
|
# Special handling of backslashes needed in win32 platforms
|
|
|
if sys.platform == "win32":
|
|
|
self.clean_glob = self._clean_glob_win32
|
|
|
else:
|
|
|
self.clean_glob = self._clean_glob
|
|
|
|
|
|
#regexp to parse docstring for function signature
|
|
|
self.docstring_sig_re = re.compile(r'^[\w|\s.]+\(([^)]*)\).*')
|
|
|
self.docstring_kwd_re = re.compile(r'[\s|\[]*(\w+)(?:\s*=\s*.*)')
|
|
|
#use this if positional argument name is also needed
|
|
|
#= re.compile(r'[\s|\[]*(\w+)(?:\s*=?\s*.*)')
|
|
|
|
|
|
self.magic_arg_matchers = [
|
|
|
self.magic_config_matches,
|
|
|
self.magic_color_matches,
|
|
|
]
|
|
|
|
|
|
# This is set externally by InteractiveShell
|
|
|
self.custom_completers = None
|
|
|
|
|
|
# This is a list of names of unicode characters that can be completed
|
|
|
# into their corresponding unicode value. The list is large, so we
|
|
|
# lazily initialize it on first use. Consuming code should access this
|
|
|
# attribute through the `@unicode_names` property.
|
|
|
self._unicode_names = None
|
|
|
|
|
|
@property
|
|
|
def matchers(self) -> List[Any]:
|
|
|
"""All active matcher routines for completion"""
|
|
|
if self.dict_keys_only:
|
|
|
return [self.dict_key_matches]
|
|
|
|
|
|
if self.use_jedi:
|
|
|
return [
|
|
|
*self.custom_matchers,
|
|
|
self.dict_key_matches,
|
|
|
self.file_matches,
|
|
|
self.magic_matches,
|
|
|
]
|
|
|
else:
|
|
|
return [
|
|
|
*self.custom_matchers,
|
|
|
self.dict_key_matches,
|
|
|
self.python_matches,
|
|
|
self.file_matches,
|
|
|
self.magic_matches,
|
|
|
self.python_func_kw_matches,
|
|
|
]
|
|
|
|
|
|
def all_completions(self, text:str) -> List[str]:
|
|
|
"""
|
|
|
Wrapper around the completion methods for the benefit of emacs.
|
|
|
"""
|
|
|
prefix = text.rpartition('.')[0]
|
|
|
with provisionalcompleter():
|
|
|
return ['.'.join([prefix, c.text]) if prefix and self.use_jedi else c.text
|
|
|
for c in self.completions(text, len(text))]
|
|
|
|
|
|
return self.complete(text)[1]
|
|
|
|
|
|
def _clean_glob(self, text:str):
|
|
|
return self.glob("%s*" % text)
|
|
|
|
|
|
def _clean_glob_win32(self, text:str):
|
|
|
return [f.replace("\\","/")
|
|
|
for f in self.glob("%s*" % text)]
|
|
|
|
|
|
def file_matches(self, text:str)->List[str]:
|
|
|
"""Match filenames, expanding ~USER type strings.
|
|
|
|
|
|
Most of the seemingly convoluted logic in this completer is an
|
|
|
attempt to handle filenames with spaces in them. And yet it's not
|
|
|
quite perfect, because Python's readline doesn't expose all of the
|
|
|
GNU readline details needed for this to be done correctly.
|
|
|
|
|
|
For a filename with a space in it, the printed completions will be
|
|
|
only the parts after what's already been typed (instead of the
|
|
|
full completions, as is normally done). I don't think with the
|
|
|
current (as of Python 2.3) Python readline it's possible to do
|
|
|
better."""
|
|
|
|
|
|
# chars that require escaping with backslash - i.e. chars
|
|
|
# that readline treats incorrectly as delimiters, but we
|
|
|
# don't want to treat as delimiters in filename matching
|
|
|
# when escaped with backslash
|
|
|
if text.startswith('!'):
|
|
|
text = text[1:]
|
|
|
text_prefix = u'!'
|
|
|
else:
|
|
|
text_prefix = u''
|
|
|
|
|
|
text_until_cursor = self.text_until_cursor
|
|
|
# track strings with open quotes
|
|
|
open_quotes = has_open_quotes(text_until_cursor)
|
|
|
|
|
|
if '(' in text_until_cursor or '[' in text_until_cursor:
|
|
|
lsplit = text
|
|
|
else:
|
|
|
try:
|
|
|
# arg_split ~ shlex.split, but with unicode bugs fixed by us
|
|
|
lsplit = arg_split(text_until_cursor)[-1]
|
|
|
except ValueError:
|
|
|
# typically an unmatched ", or backslash without escaped char.
|
|
|
if open_quotes:
|
|
|
lsplit = text_until_cursor.split(open_quotes)[-1]
|
|
|
else:
|
|
|
return []
|
|
|
except IndexError:
|
|
|
# tab pressed on empty line
|
|
|
lsplit = ""
|
|
|
|
|
|
if not open_quotes and lsplit != protect_filename(lsplit):
|
|
|
# if protectables are found, do matching on the whole escaped name
|
|
|
has_protectables = True
|
|
|
text0,text = text,lsplit
|
|
|
else:
|
|
|
has_protectables = False
|
|
|
text = os.path.expanduser(text)
|
|
|
|
|
|
if text == "":
|
|
|
return [text_prefix + protect_filename(f) for f in self.glob("*")]
|
|
|
|
|
|
# Compute the matches from the filesystem
|
|
|
if sys.platform == 'win32':
|
|
|
m0 = self.clean_glob(text)
|
|
|
else:
|
|
|
m0 = self.clean_glob(text.replace('\\', ''))
|
|
|
|
|
|
if has_protectables:
|
|
|
# If we had protectables, we need to revert our changes to the
|
|
|
# beginning of filename so that we don't double-write the part
|
|
|
# of the filename we have so far
|
|
|
len_lsplit = len(lsplit)
|
|
|
matches = [text_prefix + text0 +
|
|
|
protect_filename(f[len_lsplit:]) for f in m0]
|
|
|
else:
|
|
|
if open_quotes:
|
|
|
# if we have a string with an open quote, we don't need to
|
|
|
# protect the names beyond the quote (and we _shouldn't_, as
|
|
|
# it would cause bugs when the filesystem call is made).
|
|
|
matches = m0 if sys.platform == "win32" else\
|
|
|
[protect_filename(f, open_quotes) for f in m0]
|
|
|
else:
|
|
|
matches = [text_prefix +
|
|
|
protect_filename(f) for f in m0]
|
|
|
|
|
|
# Mark directories in input list by appending '/' to their names.
|
|
|
return [x+'/' if os.path.isdir(x) else x for x in matches]
|
|
|
|
|
|
def magic_matches(self, text:str):
|
|
|
"""Match magics"""
|
|
|
# Get all shell magics now rather than statically, so magics loaded at
|
|
|
# runtime show up too.
|
|
|
lsm = self.shell.magics_manager.lsmagic()
|
|
|
line_magics = lsm['line']
|
|
|
cell_magics = lsm['cell']
|
|
|
pre = self.magic_escape
|
|
|
pre2 = pre+pre
|
|
|
|
|
|
explicit_magic = text.startswith(pre)
|
|
|
|
|
|
# Completion logic:
|
|
|
# - user gives %%: only do cell magics
|
|
|
# - user gives %: do both line and cell magics
|
|
|
# - no prefix: do both
|
|
|
# In other words, line magics are skipped if the user gives %% explicitly
|
|
|
#
|
|
|
# We also exclude magics that match any currently visible names:
|
|
|
# https://github.com/ipython/ipython/issues/4877, unless the user has
|
|
|
# typed a %:
|
|
|
# https://github.com/ipython/ipython/issues/10754
|
|
|
bare_text = text.lstrip(pre)
|
|
|
global_matches = self.global_matches(bare_text)
|
|
|
if not explicit_magic:
|
|
|
def matches(magic):
|
|
|
"""
|
|
|
Filter magics, in particular remove magics that match
|
|
|
a name present in global namespace.
|
|
|
"""
|
|
|
return ( magic.startswith(bare_text) and
|
|
|
magic not in global_matches )
|
|
|
else:
|
|
|
def matches(magic):
|
|
|
return magic.startswith(bare_text)
|
|
|
|
|
|
comp = [ pre2+m for m in cell_magics if matches(m)]
|
|
|
if not text.startswith(pre2):
|
|
|
comp += [ pre+m for m in line_magics if matches(m)]
|
|
|
|
|
|
return comp
|
|
|
|
|
|
def magic_config_matches(self, text:str) -> List[str]:
|
|
|
""" Match class names and attributes for %config magic """
|
|
|
texts = text.strip().split()
|
|
|
|
|
|
if len(texts) > 0 and (texts[0] == 'config' or texts[0] == '%config'):
|
|
|
# get all configuration classes
|
|
|
classes = sorted(set([ c for c in self.shell.configurables
|
|
|
if c.__class__.class_traits(config=True)
|
|
|
]), key=lambda x: x.__class__.__name__)
|
|
|
classnames = [ c.__class__.__name__ for c in classes ]
|
|
|
|
|
|
# return all classnames if config or %config is given
|
|
|
if len(texts) == 1:
|
|
|
return classnames
|
|
|
|
|
|
# match classname
|
|
|
classname_texts = texts[1].split('.')
|
|
|
classname = classname_texts[0]
|
|
|
classname_matches = [ c for c in classnames
|
|
|
if c.startswith(classname) ]
|
|
|
|
|
|
# return matched classes or the matched class with attributes
|
|
|
if texts[1].find('.') < 0:
|
|
|
return classname_matches
|
|
|
elif len(classname_matches) == 1 and \
|
|
|
classname_matches[0] == classname:
|
|
|
cls = classes[classnames.index(classname)].__class__
|
|
|
help = cls.class_get_help()
|
|
|
# strip leading '--' from cl-args:
|
|
|
help = re.sub(re.compile(r'^--', re.MULTILINE), '', help)
|
|
|
return [ attr.split('=')[0]
|
|
|
for attr in help.strip().splitlines()
|
|
|
if attr.startswith(texts[1]) ]
|
|
|
return []
|
|
|
|
|
|
def magic_color_matches(self, text:str) -> List[str] :
|
|
|
""" Match color schemes for %colors magic"""
|
|
|
texts = text.split()
|
|
|
if text.endswith(' '):
|
|
|
# .split() strips off the trailing whitespace. Add '' back
|
|
|
# so that: '%colors ' -> ['%colors', '']
|
|
|
texts.append('')
|
|
|
|
|
|
if len(texts) == 2 and (texts[0] == 'colors' or texts[0] == '%colors'):
|
|
|
prefix = texts[1]
|
|
|
return [ color for color in InspectColors.keys()
|
|
|
if color.startswith(prefix) ]
|
|
|
return []
|
|
|
|
|
|
def _jedi_matches(self, cursor_column:int, cursor_line:int, text:str) -> Iterable[Any]:
|
|
|
"""
|
|
|
Return a list of :any:`jedi.api.Completions` object from a ``text`` and
|
|
|
cursor position.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
cursor_column : int
|
|
|
column position of the cursor in ``text``, 0-indexed.
|
|
|
cursor_line : int
|
|
|
line position of the cursor in ``text``, 0-indexed
|
|
|
text : str
|
|
|
text to complete
|
|
|
|
|
|
Notes
|
|
|
-----
|
|
|
If ``IPCompleter.debug`` is ``True`` may return a :any:`_FakeJediCompletion`
|
|
|
object containing a string with the Jedi debug information attached.
|
|
|
"""
|
|
|
namespaces = [self.namespace]
|
|
|
if self.global_namespace is not None:
|
|
|
namespaces.append(self.global_namespace)
|
|
|
|
|
|
completion_filter = lambda x:x
|
|
|
offset = cursor_to_position(text, cursor_line, cursor_column)
|
|
|
# filter output if we are completing for object members
|
|
|
if offset:
|
|
|
pre = text[offset-1]
|
|
|
if pre == '.':
|
|
|
if self.omit__names == 2:
|
|
|
completion_filter = lambda c:not c.name.startswith('_')
|
|
|
elif self.omit__names == 1:
|
|
|
completion_filter = lambda c:not (c.name.startswith('__') and c.name.endswith('__'))
|
|
|
elif self.omit__names == 0:
|
|
|
completion_filter = lambda x:x
|
|
|
else:
|
|
|
raise ValueError("Don't understand self.omit__names == {}".format(self.omit__names))
|
|
|
|
|
|
interpreter = jedi.Interpreter(text[:offset], namespaces)
|
|
|
try_jedi = True
|
|
|
|
|
|
try:
|
|
|
# find the first token in the current tree -- if it is a ' or " then we are in a string
|
|
|
completing_string = False
|
|
|
try:
|
|
|
first_child = next(c for c in interpreter._get_module().tree_node.children if hasattr(c, 'value'))
|
|
|
except StopIteration:
|
|
|
pass
|
|
|
else:
|
|
|
# note the value may be ', ", or it may also be ''' or """, or
|
|
|
# in some cases, """what/you/typed..., but all of these are
|
|
|
# strings.
|
|
|
completing_string = len(first_child.value) > 0 and first_child.value[0] in {"'", '"'}
|
|
|
|
|
|
# if we are in a string jedi is likely not the right candidate for
|
|
|
# now. Skip it.
|
|
|
try_jedi = not completing_string
|
|
|
except Exception as e:
|
|
|
# many of things can go wrong, we are using private API just don't crash.
|
|
|
if self.debug:
|
|
|
print("Error detecting if completing a non-finished string :", e, '|')
|
|
|
|
|
|
if not try_jedi:
|
|
|
return []
|
|
|
try:
|
|
|
return filter(completion_filter, interpreter.complete(column=cursor_column, line=cursor_line + 1))
|
|
|
except Exception as e:
|
|
|
if self.debug:
|
|
|
return [_FakeJediCompletion('Oops Jedi has crashed, please report a bug with the following:\n"""\n%s\ns"""' % (e))]
|
|
|
else:
|
|
|
return []
|
|
|
|
|
|
def python_matches(self, text:str)->List[str]:
|
|
|
"""Match attributes or global python names"""
|
|
|
if "." in text:
|
|
|
try:
|
|
|
matches = self.attr_matches(text)
|
|
|
if text.endswith('.') and self.omit__names:
|
|
|
if self.omit__names == 1:
|
|
|
# true if txt is _not_ a __ name, false otherwise:
|
|
|
no__name = (lambda txt:
|
|
|
re.match(r'.*\.__.*?__',txt) is None)
|
|
|
else:
|
|
|
# true if txt is _not_ a _ name, false otherwise:
|
|
|
no__name = (lambda txt:
|
|
|
re.match(r'\._.*?',txt[txt.rindex('.'):]) is None)
|
|
|
matches = filter(no__name, matches)
|
|
|
except NameError:
|
|
|
# catches <undefined attributes>.<tab>
|
|
|
matches = []
|
|
|
else:
|
|
|
matches = self.global_matches(text)
|
|
|
return matches
|
|
|
|
|
|
def _default_arguments_from_docstring(self, doc):
|
|
|
"""Parse the first line of docstring for call signature.
|
|
|
|
|
|
Docstring should be of the form 'min(iterable[, key=func])\n'.
|
|
|
It can also parse cython docstring of the form
|
|
|
'Minuit.migrad(self, int ncall=10000, resume=True, int nsplit=1)'.
|
|
|
"""
|
|
|
if doc is None:
|
|
|
return []
|
|
|
|
|
|
#care only the firstline
|
|
|
line = doc.lstrip().splitlines()[0]
|
|
|
|
|
|
#p = re.compile(r'^[\w|\s.]+\(([^)]*)\).*')
|
|
|
#'min(iterable[, key=func])\n' -> 'iterable[, key=func]'
|
|
|
sig = self.docstring_sig_re.search(line)
|
|
|
if sig is None:
|
|
|
return []
|
|
|
# iterable[, key=func]' -> ['iterable[' ,' key=func]']
|
|
|
sig = sig.groups()[0].split(',')
|
|
|
ret = []
|
|
|
for s in sig:
|
|
|
#re.compile(r'[\s|\[]*(\w+)(?:\s*=\s*.*)')
|
|
|
ret += self.docstring_kwd_re.findall(s)
|
|
|
return ret
|
|
|
|
|
|
def _default_arguments(self, obj):
|
|
|
"""Return the list of default arguments of obj if it is callable,
|
|
|
or empty list otherwise."""
|
|
|
call_obj = obj
|
|
|
ret = []
|
|
|
if inspect.isbuiltin(obj):
|
|
|
pass
|
|
|
elif not (inspect.isfunction(obj) or inspect.ismethod(obj)):
|
|
|
if inspect.isclass(obj):
|
|
|
#for cython embedsignature=True the constructor docstring
|
|
|
#belongs to the object itself not __init__
|
|
|
ret += self._default_arguments_from_docstring(
|
|
|
getattr(obj, '__doc__', ''))
|
|
|
# for classes, check for __init__,__new__
|
|
|
call_obj = (getattr(obj, '__init__', None) or
|
|
|
getattr(obj, '__new__', None))
|
|
|
# for all others, check if they are __call__able
|
|
|
elif hasattr(obj, '__call__'):
|
|
|
call_obj = obj.__call__
|
|
|
ret += self._default_arguments_from_docstring(
|
|
|
getattr(call_obj, '__doc__', ''))
|
|
|
|
|
|
_keeps = (inspect.Parameter.KEYWORD_ONLY,
|
|
|
inspect.Parameter.POSITIONAL_OR_KEYWORD)
|
|
|
|
|
|
try:
|
|
|
sig = inspect.signature(obj)
|
|
|
ret.extend(k for k, v in sig.parameters.items() if
|
|
|
v.kind in _keeps)
|
|
|
except ValueError:
|
|
|
pass
|
|
|
|
|
|
return list(set(ret))
|
|
|
|
|
|
def python_func_kw_matches(self, text):
|
|
|
"""Match named parameters (kwargs) of the last open function"""
|
|
|
|
|
|
if "." in text: # a parameter cannot be dotted
|
|
|
return []
|
|
|
try: regexp = self.__funcParamsRegex
|
|
|
except AttributeError:
|
|
|
regexp = self.__funcParamsRegex = re.compile(r'''
|
|
|
'.*?(?<!\\)' | # single quoted strings or
|
|
|
".*?(?<!\\)" | # double quoted strings or
|
|
|
\w+ | # identifier
|
|
|
\S # other characters
|
|
|
''', re.VERBOSE | re.DOTALL)
|
|
|
# 1. find the nearest identifier that comes before an unclosed
|
|
|
# parenthesis before the cursor
|
|
|
# e.g. for "foo (1+bar(x), pa<cursor>,a=1)", the candidate is "foo"
|
|
|
tokens = regexp.findall(self.text_until_cursor)
|
|
|
iterTokens = reversed(tokens); openPar = 0
|
|
|
|
|
|
for token in iterTokens:
|
|
|
if token == ')':
|
|
|
openPar -= 1
|
|
|
elif token == '(':
|
|
|
openPar += 1
|
|
|
if openPar > 0:
|
|
|
# found the last unclosed parenthesis
|
|
|
break
|
|
|
else:
|
|
|
return []
|
|
|
# 2. Concatenate dotted names ("foo.bar" for "foo.bar(x, pa" )
|
|
|
ids = []
|
|
|
isId = re.compile(r'\w+$').match
|
|
|
|
|
|
while True:
|
|
|
try:
|
|
|
ids.append(next(iterTokens))
|
|
|
if not isId(ids[-1]):
|
|
|
ids.pop(); break
|
|
|
if not next(iterTokens) == '.':
|
|
|
break
|
|
|
except StopIteration:
|
|
|
break
|
|
|
|
|
|
# Find all named arguments already assigned to, as to avoid suggesting
|
|
|
# them again
|
|
|
usedNamedArgs = set()
|
|
|
par_level = -1
|
|
|
for token, next_token in zip(tokens, tokens[1:]):
|
|
|
if token == '(':
|
|
|
par_level += 1
|
|
|
elif token == ')':
|
|
|
par_level -= 1
|
|
|
|
|
|
if par_level != 0:
|
|
|
continue
|
|
|
|
|
|
if next_token != '=':
|
|
|
continue
|
|
|
|
|
|
usedNamedArgs.add(token)
|
|
|
|
|
|
argMatches = []
|
|
|
try:
|
|
|
callableObj = '.'.join(ids[::-1])
|
|
|
namedArgs = self._default_arguments(eval(callableObj,
|
|
|
self.namespace))
|
|
|
|
|
|
# Remove used named arguments from the list, no need to show twice
|
|
|
for namedArg in set(namedArgs) - usedNamedArgs:
|
|
|
if namedArg.startswith(text):
|
|
|
argMatches.append("%s=" %namedArg)
|
|
|
except:
|
|
|
pass
|
|
|
|
|
|
return argMatches
|
|
|
|
|
|
@staticmethod
|
|
|
def _get_keys(obj: Any) -> List[Any]:
|
|
|
# Objects can define their own completions by defining an
|
|
|
# _ipy_key_completions_() method.
|
|
|
method = get_real_method(obj, '_ipython_key_completions_')
|
|
|
if method is not None:
|
|
|
return method()
|
|
|
|
|
|
# Special case some common in-memory dict-like types
|
|
|
if isinstance(obj, dict) or\
|
|
|
_safe_isinstance(obj, 'pandas', 'DataFrame'):
|
|
|
try:
|
|
|
return list(obj.keys())
|
|
|
except Exception:
|
|
|
return []
|
|
|
elif _safe_isinstance(obj, 'numpy', 'ndarray') or\
|
|
|
_safe_isinstance(obj, 'numpy', 'void'):
|
|
|
return obj.dtype.names or []
|
|
|
return []
|
|
|
|
|
|
def dict_key_matches(self, text:str) -> List[str]:
|
|
|
"Match string keys in a dictionary, after e.g. 'foo[' "
|
|
|
|
|
|
|
|
|
if self.__dict_key_regexps is not None:
|
|
|
regexps = self.__dict_key_regexps
|
|
|
else:
|
|
|
dict_key_re_fmt = r'''(?x)
|
|
|
( # match dict-referring expression wrt greedy setting
|
|
|
%s
|
|
|
)
|
|
|
\[ # open bracket
|
|
|
\s* # and optional whitespace
|
|
|
# Capture any number of str-like objects (e.g. "a", "b", 'c')
|
|
|
((?:[uUbB]? # string prefix (r not handled)
|
|
|
(?:
|
|
|
'(?:[^']|(?<!\\)\\')*'
|
|
|
|
|
|
|
"(?:[^"]|(?<!\\)\\")*"
|
|
|
)
|
|
|
\s*,\s*
|
|
|
)*)
|
|
|
([uUbB]? # string prefix (r not handled)
|
|
|
(?: # unclosed string
|
|
|
'(?:[^']|(?<!\\)\\')*
|
|
|
|
|
|
|
"(?:[^"]|(?<!\\)\\")*
|
|
|
)
|
|
|
)?
|
|
|
$
|
|
|
'''
|
|
|
regexps = self.__dict_key_regexps = {
|
|
|
False: re.compile(dict_key_re_fmt % r'''
|
|
|
# identifiers separated by .
|
|
|
(?!\d)\w+
|
|
|
(?:\.(?!\d)\w+)*
|
|
|
'''),
|
|
|
True: re.compile(dict_key_re_fmt % '''
|
|
|
.+
|
|
|
''')
|
|
|
}
|
|
|
|
|
|
match = regexps[self.greedy].search(self.text_until_cursor)
|
|
|
|
|
|
if match is None:
|
|
|
return []
|
|
|
|
|
|
expr, prefix0, prefix = match.groups()
|
|
|
try:
|
|
|
obj = eval(expr, self.namespace)
|
|
|
except Exception:
|
|
|
try:
|
|
|
obj = eval(expr, self.global_namespace)
|
|
|
except Exception:
|
|
|
return []
|
|
|
|
|
|
keys = self._get_keys(obj)
|
|
|
if not keys:
|
|
|
return keys
|
|
|
|
|
|
extra_prefix = eval(prefix0) if prefix0 != '' else None
|
|
|
|
|
|
closing_quote, token_offset, matches = match_dict_keys(keys, prefix, self.splitter.delims, extra_prefix=extra_prefix)
|
|
|
if not matches:
|
|
|
return matches
|
|
|
|
|
|
# get the cursor position of
|
|
|
# - the text being completed
|
|
|
# - the start of the key text
|
|
|
# - the start of the completion
|
|
|
text_start = len(self.text_until_cursor) - len(text)
|
|
|
if prefix:
|
|
|
key_start = match.start(3)
|
|
|
completion_start = key_start + token_offset
|
|
|
else:
|
|
|
key_start = completion_start = match.end()
|
|
|
|
|
|
# grab the leading prefix, to make sure all completions start with `text`
|
|
|
if text_start > key_start:
|
|
|
leading = ''
|
|
|
else:
|
|
|
leading = text[text_start:completion_start]
|
|
|
|
|
|
# the index of the `[` character
|
|
|
bracket_idx = match.end(1)
|
|
|
|
|
|
# append closing quote and bracket as appropriate
|
|
|
# this is *not* appropriate if the opening quote or bracket is outside
|
|
|
# the text given to this method
|
|
|
suf = ''
|
|
|
continuation = self.line_buffer[len(self.text_until_cursor):]
|
|
|
if key_start > text_start and closing_quote:
|
|
|
# quotes were opened inside text, maybe close them
|
|
|
if continuation.startswith(closing_quote):
|
|
|
continuation = continuation[len(closing_quote):]
|
|
|
else:
|
|
|
suf += closing_quote
|
|
|
if bracket_idx > text_start:
|
|
|
# brackets were opened inside text, maybe close them
|
|
|
if not continuation.startswith(']'):
|
|
|
suf += ']'
|
|
|
|
|
|
return [leading + k + suf for k in matches]
|
|
|
|
|
|
@staticmethod
|
|
|
def unicode_name_matches(text:str) -> Tuple[str, List[str]] :
|
|
|
"""Match Latex-like syntax for unicode characters base
|
|
|
on the name of the character.
|
|
|
|
|
|
This does ``\\GREEK SMALL LETTER ETA`` -> ``η``
|
|
|
|
|
|
Works only on valid python 3 identifier, or on combining characters that
|
|
|
will combine to form a valid identifier.
|
|
|
"""
|
|
|
slashpos = text.rfind('\\')
|
|
|
if slashpos > -1:
|
|
|
s = text[slashpos+1:]
|
|
|
try :
|
|
|
unic = unicodedata.lookup(s)
|
|
|
# allow combining chars
|
|
|
if ('a'+unic).isidentifier():
|
|
|
return '\\'+s,[unic]
|
|
|
except KeyError:
|
|
|
pass
|
|
|
return '', []
|
|
|
|
|
|
|
|
|
def latex_matches(self, text:str) -> Tuple[str, Sequence[str]]:
|
|
|
"""Match Latex syntax for unicode characters.
|
|
|
|
|
|
This does both ``\\alp`` -> ``\\alpha`` and ``\\alpha`` -> ``α``
|
|
|
"""
|
|
|
slashpos = text.rfind('\\')
|
|
|
if slashpos > -1:
|
|
|
s = text[slashpos:]
|
|
|
if s in latex_symbols:
|
|
|
# Try to complete a full latex symbol to unicode
|
|
|
# \\alpha -> α
|
|
|
return s, [latex_symbols[s]]
|
|
|
else:
|
|
|
# If a user has partially typed a latex symbol, give them
|
|
|
# a full list of options \al -> [\aleph, \alpha]
|
|
|
matches = [k for k in latex_symbols if k.startswith(s)]
|
|
|
if matches:
|
|
|
return s, matches
|
|
|
return '', ()
|
|
|
|
|
|
def dispatch_custom_completer(self, text):
|
|
|
if not self.custom_completers:
|
|
|
return
|
|
|
|
|
|
line = self.line_buffer
|
|
|
if not line.strip():
|
|
|
return None
|
|
|
|
|
|
# Create a little structure to pass all the relevant information about
|
|
|
# the current completion to any custom completer.
|
|
|
event = SimpleNamespace()
|
|
|
event.line = line
|
|
|
event.symbol = text
|
|
|
cmd = line.split(None,1)[0]
|
|
|
event.command = cmd
|
|
|
event.text_until_cursor = self.text_until_cursor
|
|
|
|
|
|
# for foo etc, try also to find completer for %foo
|
|
|
if not cmd.startswith(self.magic_escape):
|
|
|
try_magic = self.custom_completers.s_matches(
|
|
|
self.magic_escape + cmd)
|
|
|
else:
|
|
|
try_magic = []
|
|
|
|
|
|
for c in itertools.chain(self.custom_completers.s_matches(cmd),
|
|
|
try_magic,
|
|
|
self.custom_completers.flat_matches(self.text_until_cursor)):
|
|
|
try:
|
|
|
res = c(event)
|
|
|
if res:
|
|
|
# first, try case sensitive match
|
|
|
withcase = [r for r in res if r.startswith(text)]
|
|
|
if withcase:
|
|
|
return withcase
|
|
|
# if none, then case insensitive ones are ok too
|
|
|
text_low = text.lower()
|
|
|
return [r for r in res if r.lower().startswith(text_low)]
|
|
|
except TryNext:
|
|
|
pass
|
|
|
except KeyboardInterrupt:
|
|
|
"""
|
|
|
If custom completer take too long,
|
|
|
let keyboard interrupt abort and return nothing.
|
|
|
"""
|
|
|
break
|
|
|
|
|
|
return None
|
|
|
|
|
|
def completions(self, text: str, offset: int)->Iterator[Completion]:
|
|
|
"""
|
|
|
Returns an iterator over the possible completions
|
|
|
|
|
|
.. warning::
|
|
|
|
|
|
Unstable
|
|
|
|
|
|
This function is unstable, API may change without warning.
|
|
|
It will also raise unless use in proper context manager.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
text : str
|
|
|
Full text of the current input, multi line string.
|
|
|
offset : int
|
|
|
Integer representing the position of the cursor in ``text``. Offset
|
|
|
is 0-based indexed.
|
|
|
|
|
|
Yields
|
|
|
------
|
|
|
Completion
|
|
|
|
|
|
Notes
|
|
|
-----
|
|
|
The cursor on a text can either be seen as being "in between"
|
|
|
characters or "On" a character depending on the interface visible to
|
|
|
the user. For consistency the cursor being on "in between" characters X
|
|
|
and Y is equivalent to the cursor being "on" character Y, that is to say
|
|
|
the character the cursor is on is considered as being after the cursor.
|
|
|
|
|
|
Combining characters may span more that one position in the
|
|
|
text.
|
|
|
|
|
|
.. note::
|
|
|
|
|
|
If ``IPCompleter.debug`` is :any:`True` will yield a ``--jedi/ipython--``
|
|
|
fake Completion token to distinguish completion returned by Jedi
|
|
|
and usual IPython completion.
|
|
|
|
|
|
.. note::
|
|
|
|
|
|
Completions are not completely deduplicated yet. If identical
|
|
|
completions are coming from different sources this function does not
|
|
|
ensure that each completion object will only be present once.
|
|
|
"""
|
|
|
warnings.warn("_complete is a provisional API (as of IPython 6.0). "
|
|
|
"It may change without warnings. "
|
|
|
"Use in corresponding context manager.",
|
|
|
category=ProvisionalCompleterWarning, stacklevel=2)
|
|
|
|
|
|
seen = set()
|
|
|
profiler:Optional[cProfile.Profile]
|
|
|
try:
|
|
|
if self.profile_completions:
|
|
|
import cProfile
|
|
|
profiler = cProfile.Profile()
|
|
|
profiler.enable()
|
|
|
else:
|
|
|
profiler = None
|
|
|
|
|
|
for c in self._completions(text, offset, _timeout=self.jedi_compute_type_timeout/1000):
|
|
|
if c and (c in seen):
|
|
|
continue
|
|
|
yield c
|
|
|
seen.add(c)
|
|
|
except KeyboardInterrupt:
|
|
|
"""if completions take too long and users send keyboard interrupt,
|
|
|
do not crash and return ASAP. """
|
|
|
pass
|
|
|
finally:
|
|
|
if profiler is not None:
|
|
|
profiler.disable()
|
|
|
ensure_dir_exists(self.profiler_output_dir)
|
|
|
output_path = os.path.join(self.profiler_output_dir, str(uuid.uuid4()))
|
|
|
print("Writing profiler output to", output_path)
|
|
|
profiler.dump_stats(output_path)
|
|
|
|
|
|
def _completions(self, full_text: str, offset: int, *, _timeout) -> Iterator[Completion]:
|
|
|
"""
|
|
|
Core completion module.Same signature as :any:`completions`, with the
|
|
|
extra `timeout` parameter (in seconds).
|
|
|
|
|
|
Computing jedi's completion ``.type`` can be quite expensive (it is a
|
|
|
lazy property) and can require some warm-up, more warm up than just
|
|
|
computing the ``name`` of a completion. The warm-up can be :
|
|
|
|
|
|
- Long warm-up the first time a module is encountered after
|
|
|
install/update: actually build parse/inference tree.
|
|
|
|
|
|
- first time the module is encountered in a session: load tree from
|
|
|
disk.
|
|
|
|
|
|
We don't want to block completions for tens of seconds so we give the
|
|
|
completer a "budget" of ``_timeout`` seconds per invocation to compute
|
|
|
completions types, the completions that have not yet been computed will
|
|
|
be marked as "unknown" an will have a chance to be computed next round
|
|
|
are things get cached.
|
|
|
|
|
|
Keep in mind that Jedi is not the only thing treating the completion so
|
|
|
keep the timeout short-ish as if we take more than 0.3 second we still
|
|
|
have lots of processing to do.
|
|
|
|
|
|
"""
|
|
|
deadline = time.monotonic() + _timeout
|
|
|
|
|
|
|
|
|
before = full_text[:offset]
|
|
|
cursor_line, cursor_column = position_to_cursor(full_text, offset)
|
|
|
|
|
|
matched_text, matches, matches_origin, jedi_matches = self._complete(
|
|
|
full_text=full_text, cursor_line=cursor_line, cursor_pos=cursor_column)
|
|
|
|
|
|
iter_jm = iter(jedi_matches)
|
|
|
if _timeout:
|
|
|
for jm in iter_jm:
|
|
|
try:
|
|
|
type_ = jm.type
|
|
|
except Exception:
|
|
|
if self.debug:
|
|
|
print("Error in Jedi getting type of ", jm)
|
|
|
type_ = None
|
|
|
delta = len(jm.name_with_symbols) - len(jm.complete)
|
|
|
if type_ == 'function':
|
|
|
signature = _make_signature(jm)
|
|
|
else:
|
|
|
signature = ''
|
|
|
yield Completion(start=offset - delta,
|
|
|
end=offset,
|
|
|
text=jm.name_with_symbols,
|
|
|
type=type_,
|
|
|
signature=signature,
|
|
|
_origin='jedi')
|
|
|
|
|
|
if time.monotonic() > deadline:
|
|
|
break
|
|
|
|
|
|
for jm in iter_jm:
|
|
|
delta = len(jm.name_with_symbols) - len(jm.complete)
|
|
|
yield Completion(start=offset - delta,
|
|
|
end=offset,
|
|
|
text=jm.name_with_symbols,
|
|
|
type='<unknown>', # don't compute type for speed
|
|
|
_origin='jedi',
|
|
|
signature='')
|
|
|
|
|
|
|
|
|
start_offset = before.rfind(matched_text)
|
|
|
|
|
|
# TODO:
|
|
|
# Suppress this, right now just for debug.
|
|
|
if jedi_matches and matches and self.debug:
|
|
|
yield Completion(start=start_offset, end=offset, text='--jedi/ipython--',
|
|
|
_origin='debug', type='none', signature='')
|
|
|
|
|
|
# I'm unsure if this is always true, so let's assert and see if it
|
|
|
# crash
|
|
|
assert before.endswith(matched_text)
|
|
|
for m, t in zip(matches, matches_origin):
|
|
|
yield Completion(start=start_offset, end=offset, text=m, _origin=t, signature='', type='<unknown>')
|
|
|
|
|
|
|
|
|
def complete(self, text=None, line_buffer=None, cursor_pos=None) -> Tuple[str, Sequence[str]]:
|
|
|
"""Find completions for the given text and line context.
|
|
|
|
|
|
Note that both the text and the line_buffer are optional, but at least
|
|
|
one of them must be given.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
text : string, optional
|
|
|
Text to perform the completion on. If not given, the line buffer
|
|
|
is split using the instance's CompletionSplitter object.
|
|
|
line_buffer : string, optional
|
|
|
If not given, the completer attempts to obtain the current line
|
|
|
buffer via readline. This keyword allows clients which are
|
|
|
requesting for text completions in non-readline contexts to inform
|
|
|
the completer of the entire text.
|
|
|
cursor_pos : int, optional
|
|
|
Index of the cursor in the full line buffer. Should be provided by
|
|
|
remote frontends where kernel has no access to frontend state.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
Tuple of two items:
|
|
|
text : str
|
|
|
Text that was actually used in the completion.
|
|
|
matches : list
|
|
|
A list of completion matches.
|
|
|
|
|
|
Notes
|
|
|
-----
|
|
|
This API is likely to be deprecated and replaced by
|
|
|
:any:`IPCompleter.completions` in the future.
|
|
|
|
|
|
"""
|
|
|
warnings.warn('`Completer.complete` is pending deprecation since '
|
|
|
'IPython 6.0 and will be replaced by `Completer.completions`.',
|
|
|
PendingDeprecationWarning)
|
|
|
# potential todo, FOLD the 3rd throw away argument of _complete
|
|
|
# into the first 2 one.
|
|
|
return self._complete(line_buffer=line_buffer, cursor_pos=cursor_pos, text=text, cursor_line=0)[:2]
|
|
|
|
|
|
def _complete(self, *, cursor_line, cursor_pos, line_buffer=None, text=None,
|
|
|
full_text=None) -> _CompleteResult:
|
|
|
"""
|
|
|
Like complete but can also returns raw jedi completions as well as the
|
|
|
origin of the completion text. This could (and should) be made much
|
|
|
cleaner but that will be simpler once we drop the old (and stateful)
|
|
|
:any:`complete` API.
|
|
|
|
|
|
With current provisional API, cursor_pos act both (depending on the
|
|
|
caller) as the offset in the ``text`` or ``line_buffer``, or as the
|
|
|
``column`` when passing multiline strings this could/should be renamed
|
|
|
but would add extra noise.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
cursor_line
|
|
|
Index of the line the cursor is on. 0 indexed.
|
|
|
cursor_pos
|
|
|
Position of the cursor in the current line/line_buffer/text. 0
|
|
|
indexed.
|
|
|
line_buffer : optional, str
|
|
|
The current line the cursor is in, this is mostly due to legacy
|
|
|
reason that readline could only give a us the single current line.
|
|
|
Prefer `full_text`.
|
|
|
text : str
|
|
|
The current "token" the cursor is in, mostly also for historical
|
|
|
reasons. as the completer would trigger only after the current line
|
|
|
was parsed.
|
|
|
full_text : str
|
|
|
Full text of the current cell.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
A tuple of N elements which are (likely):
|
|
|
matched_text: ? the text that the complete matched
|
|
|
matches: list of completions ?
|
|
|
matches_origin: ? list same length as matches, and where each completion came from
|
|
|
jedi_matches: list of Jedi matches, have it's own structure.
|
|
|
"""
|
|
|
|
|
|
|
|
|
# if the cursor position isn't given, the only sane assumption we can
|
|
|
# make is that it's at the end of the line (the common case)
|
|
|
if cursor_pos is None:
|
|
|
cursor_pos = len(line_buffer) if text is None else len(text)
|
|
|
|
|
|
if self.use_main_ns:
|
|
|
self.namespace = __main__.__dict__
|
|
|
|
|
|
# if text is either None or an empty string, rely on the line buffer
|
|
|
if (not line_buffer) and full_text:
|
|
|
line_buffer = full_text.split('\n')[cursor_line]
|
|
|
if not text: # issue #11508: check line_buffer before calling split_line
|
|
|
text = self.splitter.split_line(line_buffer, cursor_pos) if line_buffer else ''
|
|
|
|
|
|
if self.backslash_combining_completions:
|
|
|
# allow deactivation of these on windows.
|
|
|
base_text = text if not line_buffer else line_buffer[:cursor_pos]
|
|
|
|
|
|
for meth in (self.latex_matches,
|
|
|
self.unicode_name_matches,
|
|
|
back_latex_name_matches,
|
|
|
back_unicode_name_matches,
|
|
|
self.fwd_unicode_match):
|
|
|
name_text, name_matches = meth(base_text)
|
|
|
if name_text:
|
|
|
return _CompleteResult(name_text, name_matches[:MATCHES_LIMIT], \
|
|
|
[meth.__qualname__]*min(len(name_matches), MATCHES_LIMIT), ())
|
|
|
|
|
|
|
|
|
# If no line buffer is given, assume the input text is all there was
|
|
|
if line_buffer is None:
|
|
|
line_buffer = text
|
|
|
|
|
|
self.line_buffer = line_buffer
|
|
|
self.text_until_cursor = self.line_buffer[:cursor_pos]
|
|
|
|
|
|
# Do magic arg matches
|
|
|
for matcher in self.magic_arg_matchers:
|
|
|
matches = list(matcher(line_buffer))[:MATCHES_LIMIT]
|
|
|
if matches:
|
|
|
origins = [matcher.__qualname__] * len(matches)
|
|
|
return _CompleteResult(text, matches, origins, ())
|
|
|
|
|
|
# Start with a clean slate of completions
|
|
|
matches = []
|
|
|
|
|
|
# FIXME: we should extend our api to return a dict with completions for
|
|
|
# different types of objects. The rlcomplete() method could then
|
|
|
# simply collapse the dict into a list for readline, but we'd have
|
|
|
# richer completion semantics in other environments.
|
|
|
is_magic_prefix = len(text) > 0 and text[0] == "%"
|
|
|
completions: Iterable[Any] = []
|
|
|
if self.use_jedi and not is_magic_prefix:
|
|
|
if not full_text:
|
|
|
full_text = line_buffer
|
|
|
completions = self._jedi_matches(
|
|
|
cursor_pos, cursor_line, full_text)
|
|
|
|
|
|
if self.merge_completions:
|
|
|
matches = []
|
|
|
for matcher in self.matchers:
|
|
|
try:
|
|
|
matches.extend([(m, matcher.__qualname__)
|
|
|
for m in matcher(text)])
|
|
|
except:
|
|
|
# Show the ugly traceback if the matcher causes an
|
|
|
# exception, but do NOT crash the kernel!
|
|
|
sys.excepthook(*sys.exc_info())
|
|
|
else:
|
|
|
for matcher in self.matchers:
|
|
|
matches = [(m, matcher.__qualname__)
|
|
|
for m in matcher(text)]
|
|
|
if matches:
|
|
|
break
|
|
|
|
|
|
seen = set()
|
|
|
filtered_matches = set()
|
|
|
for m in matches:
|
|
|
t, c = m
|
|
|
if t not in seen:
|
|
|
filtered_matches.add(m)
|
|
|
seen.add(t)
|
|
|
|
|
|
_filtered_matches = sorted(filtered_matches, key=lambda x: completions_sorting_key(x[0]))
|
|
|
|
|
|
custom_res = [(m, 'custom') for m in self.dispatch_custom_completer(text) or []]
|
|
|
|
|
|
_filtered_matches = custom_res or _filtered_matches
|
|
|
|
|
|
_filtered_matches = _filtered_matches[:MATCHES_LIMIT]
|
|
|
_matches = [m[0] for m in _filtered_matches]
|
|
|
origins = [m[1] for m in _filtered_matches]
|
|
|
|
|
|
self.matches = _matches
|
|
|
|
|
|
return _CompleteResult(text, _matches, origins, completions)
|
|
|
|
|
|
def fwd_unicode_match(self, text:str) -> Tuple[str, Sequence[str]]:
|
|
|
"""
|
|
|
Forward match a string starting with a backslash with a list of
|
|
|
potential Unicode completions.
|
|
|
|
|
|
Will compute list list of Unicode character names on first call and cache it.
|
|
|
|
|
|
Returns
|
|
|
-------
|
|
|
At tuple with:
|
|
|
- matched text (empty if no matches)
|
|
|
- list of potential completions, empty tuple otherwise)
|
|
|
"""
|
|
|
# TODO: self.unicode_names is here a list we traverse each time with ~100k elements.
|
|
|
# We could do a faster match using a Trie.
|
|
|
|
|
|
# Using pygtrie the following seem to work:
|
|
|
|
|
|
# s = PrefixSet()
|
|
|
|
|
|
# for c in range(0,0x10FFFF + 1):
|
|
|
# try:
|
|
|
# s.add(unicodedata.name(chr(c)))
|
|
|
# except ValueError:
|
|
|
# pass
|
|
|
# [''.join(k) for k in s.iter(prefix)]
|
|
|
|
|
|
# But need to be timed and adds an extra dependency.
|
|
|
|
|
|
slashpos = text.rfind('\\')
|
|
|
# if text starts with slash
|
|
|
if slashpos > -1:
|
|
|
# PERF: It's important that we don't access self._unicode_names
|
|
|
# until we're inside this if-block. _unicode_names is lazily
|
|
|
# initialized, and it takes a user-noticeable amount of time to
|
|
|
# initialize it, so we don't want to initialize it unless we're
|
|
|
# actually going to use it.
|
|
|
s = text[slashpos + 1 :]
|
|
|
sup = s.upper()
|
|
|
candidates = [x for x in self.unicode_names if x.startswith(sup)]
|
|
|
if candidates:
|
|
|
return s, candidates
|
|
|
candidates = [x for x in self.unicode_names if sup in x]
|
|
|
if candidates:
|
|
|
return s, candidates
|
|
|
splitsup = sup.split(" ")
|
|
|
candidates = [
|
|
|
x for x in self.unicode_names if all(u in x for u in splitsup)
|
|
|
]
|
|
|
if candidates:
|
|
|
return s, candidates
|
|
|
|
|
|
return "", ()
|
|
|
|
|
|
# if text does not start with slash
|
|
|
else:
|
|
|
return '', ()
|
|
|
|
|
|
@property
|
|
|
def unicode_names(self) -> List[str]:
|
|
|
"""List of names of unicode code points that can be completed.
|
|
|
|
|
|
The list is lazily initialized on first access.
|
|
|
"""
|
|
|
if self._unicode_names is None:
|
|
|
names = []
|
|
|
for c in range(0,0x10FFFF + 1):
|
|
|
try:
|
|
|
names.append(unicodedata.name(chr(c)))
|
|
|
except ValueError:
|
|
|
pass
|
|
|
self._unicode_names = _unicode_name_compute(_UNICODE_RANGES)
|
|
|
|
|
|
return self._unicode_names
|
|
|
|
|
|
def _unicode_name_compute(ranges:List[Tuple[int,int]]) -> List[str]:
|
|
|
names = []
|
|
|
for start,stop in ranges:
|
|
|
for c in range(start, stop) :
|
|
|
try:
|
|
|
names.append(unicodedata.name(chr(c)))
|
|
|
except ValueError:
|
|
|
pass
|
|
|
return names
|
|
|
|
