upstream/mercurial-mirror Files · mercurial/thirdparty/zope/interface/_compat.py

commit: set whole manifest entries at once (node with its associated flags)...

commit: set whole manifest entries at once (node with its associated flags) Add a new function manifest.set that sets whole manifest entries at once, so the caller doesn't have to do two separate operations: m[p] = n m.set_flags(f) becomes: m.set(p, n, f) This obviously saves an extra lookup by path, and it also lets the underlying manifest implementation to be more efficient as it doesn't have to deal with partially-specified entries. It makes the interaction conceptually simpler, as well, since we don't have to go through an intermediate state of incorrect partially-written entry. (the real motivation for this change is an alternative manifest implementation where we batch pending writes, and dealing with fully defined entries makes the batching logic muchsimpler while avoiding slowdown due to alternating writes and reads)

Gregory Szorc - - Load All Authors

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      ##############################################################################

      #

      # Copyright (c) 2006 Zope Foundation and Contributors.

      # All Rights Reserved.

      #

      # This software is subject to the provisions of the Zope Public License,

      # Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.

      # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED

      # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

      # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

      # FOR A PARTICULAR PURPOSE.

      #

      ##############################################################################

      """Basic components support

      """

      from __future__ import absolute_import

      import sys

      import types

      if sys.version_info[0] < 3:

          def _normalize_name(name):

              if isinstance(name, basestring):

                  return unicode(name)

              raise TypeError("name must be a regular or unicode string")

          CLASS_TYPES = (type, types.ClassType)

          STRING_TYPES = (basestring,)

          _BUILTINS = '__builtin__'

          PYTHON3 = False

          PYTHON2 = True

      else:

          def _normalize_name(name):

              if isinstance(name, bytes):

                  name = str(name, 'ascii')

              if isinstance(name, str):

                  return name

              raise TypeError("name must be a string or ASCII-only bytes")

          CLASS_TYPES = (type,)

          STRING_TYPES = (str,)

          _BUILTINS = 'builtins'

          PYTHON3 = True

          PYTHON2 = False

      def _skip_under_py3k(test_method):

          import unittest

          return unittest.skipIf(sys.version_info[0] >= 3, "Only on Python 2")(test_method)

      def _skip_under_py2(test_method):

          import unittest

          return unittest.skipIf(sys.version_info[0] < 3, "Only on Python 3")(test_method)

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				##############################################################################
				#
				# Copyright (c) 2006 Zope Foundation and Contributors.
				# All Rights Reserved.
				#
				# This software is subject to the provisions of the Zope Public License,
				# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
				# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
				# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
				# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
				# FOR A PARTICULAR PURPOSE.
				#
				##############################################################################
				"""Basic components support
				"""
				from __future__ import absolute_import

				import sys
				import types

				if sys.version_info[0] < 3:

				def _normalize_name(name):
				if isinstance(name, basestring):
				return unicode(name)
				raise TypeError("name must be a regular or unicode string")

				CLASS_TYPES = (type, types.ClassType)
				STRING_TYPES = (basestring,)

				_BUILTINS = '__builtin__'

				PYTHON3 = False
				PYTHON2 = True

				else:

				def _normalize_name(name):
				if isinstance(name, bytes):
				name = str(name, 'ascii')
				if isinstance(name, str):
				return name
				raise TypeError("name must be a string or ASCII-only bytes")

				CLASS_TYPES = (type,)
				STRING_TYPES = (str,)

				_BUILTINS = 'builtins'

				PYTHON3 = True
				PYTHON2 = False

				def _skip_under_py3k(test_method):
				import unittest
				return unittest.skipIf(sys.version_info[0] >= 3, "Only on Python 2")(test_method)


				def _skip_under_py2(test_method):
				import unittest
				return unittest.skipIf(sys.version_info[0] < 3, "Only on Python 3")(test_method)