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Multiple improvements to tab completion....
Multiple improvements to tab completion. I refactored the API quite a bit, to retain readline compatibility but make it more independent of readline. There's still more to do in cleaning up our init_readline() method, but now the completer objects have separate rlcomplete() and complete() methods. The former uses the quirky readline API with a state flag, while the latter is stateless, takes only text information, and is more suitable for GUIs and other frontends to call programatically. Made other minor fixes to ensure the test suite passes in full. While all this code is a bit messy, we're getting in the direction of the APIs we need in the long run.
Brian E Granger - - Load All Authors

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message_cache.py
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/ IPython / kernel / core / message_cache.py
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# encoding: utf-8
"""Storage for the responses from the interpreter."""
__docformat__ = "restructuredtext en"
#-------------------------------------------------------------------------------
# Copyright (C) 2008 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
class IMessageCache(object):
""" Storage for the response from the interpreter.
"""
def add_message(self, i, message):
""" Add a message dictionary to the cache.
Parameters
----------
i : int
message : dict
"""
def get_message(self, i=None):
""" Get the message from the cache.
Parameters
----------
i : int, optional
The number of the message. If not provided, return the
highest-numbered message.
Returns
-------
message : dict
Raises
------
IndexError if the message does not exist in the cache.
"""
class SimpleMessageCache(object):
""" Simple dictionary-based, in-memory storage of the responses from the
interpreter.
"""
def __init__(self):
self.cache = {}
def add_message(self, i, message):
""" Add a message dictionary to the cache.
Parameters
----------
i : int
message : dict
"""
self.cache[i] = message
def get_message(self, i=None):
""" Get the message from the cache.
Parameters
----------
i : int, optional
The number of the message. If not provided, return the
highest-numbered message.
Returns
-------
message : dict
Raises
------
IndexError if the message does not exist in the cache.
"""
if i is None:
keys = self.cache.keys()
if len(keys) == 0:
raise IndexError("index %r out of range" % i)
else:
i = max(self.cache.keys())
try:
return self.cache[i]
except KeyError:
# IndexError is more appropriate, here.
raise IndexError("index %r out of range" % i)