upstream/ipython Files · IPython/kernel/core/traceback_formatter.py

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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      # encoding: utf-8

      """Some formatter objects to extract traceback information by replacing

      sys.excepthook()."""

      __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

      #-------------------------------------------------------------------------------

      import traceback

      class ITracebackFormatter(object):

          """ Objects conforming to this interface will format tracebacks into other

          objects.

          """

          # The kind of formatter.

          kind = 'traceback'

          # The unique identifier for this formatter.

          identifier = None

          def __call__(self, exc_type, exc_value, exc_traceback):

              """ Return a formatted representation of a traceback.

              """

              raise NotImplementedError

      class PlainTracebackFormatter(ITracebackFormatter):

          """ Return a string with the regular traceback information.

          """

          # The unique identifier for this formatter.

          identifier = 'plain'

          def __init__(self, limit=None):

              # The maximum number of stack levels to go back.

              # None implies all stack levels are returned.

              self.limit = limit

          def __call__(self, exc_type, exc_value, exc_traceback):

              """ Return a string with the regular traceback information.

              """

              lines = traceback.format_tb(exc_traceback, self.limit)

              lines.append('%s: %s' % (exc_type.__name__, exc_value))

              return '\n'.join(lines)

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				# encoding: utf-8

				"""Some formatter objects to extract traceback information by replacing
				sys.excepthook()."""

				__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
				#-------------------------------------------------------------------------------

				import traceback


				class ITracebackFormatter(object):
				""" Objects conforming to this interface will format tracebacks into other
				objects.
				"""

				# The kind of formatter.
				kind = 'traceback'

				# The unique identifier for this formatter.
				identifier = None


				def __call__(self, exc_type, exc_value, exc_traceback):
				""" Return a formatted representation of a traceback.
				"""

				raise NotImplementedError


				class PlainTracebackFormatter(ITracebackFormatter):
				""" Return a string with the regular traceback information.
				"""

				# The unique identifier for this formatter.
				identifier = 'plain'


				def __init__(self, limit=None):
				# The maximum number of stack levels to go back.
				# None implies all stack levels are returned.
				self.limit = limit

				def __call__(self, exc_type, exc_value, exc_traceback):
				""" Return a string with the regular traceback information.
				"""

				lines = traceback.format_tb(exc_traceback, self.limit)
				lines.append('%s: %s' % (exc_type.__name__, exc_value))
				return '\n'.join(lines)