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

deltas: skip if projected delta size does not match text size constraint...

deltas: skip if projected delta size does not match text size constraint Before computing any delta, we get a basic estimation of the delta size we can expect and the resulted compressed value. We then checks this projected size against the ½ⁿ size constraints. This allows to exclude potential base candidates before doing any expensive computation. This only apply to the intermediate-snapshot case since this constraint only apply to them. In practice we only perform this new checks for the manifestlog. Manifest log combine two property: it is likely to have delta chain issue and its diffing/compression is fairly predictable. The initial author of this changeset is Valentin Gatien-Baron providing the initial idea and initial testing, Pierre-Yves David later consolidated the code in the right location and run more extensive testing.

Gregory Szorc - - Load All Authors

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        Gregory Szorc
    
thirdparty: vendor zope.interface 4.4.3...

              r37193
            
      ##############################################################################

      #

      # Copyright (c) 2002 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.

      #

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

      """Adapter-style interface registry

      See Adapter class.

      """

        Gregory Szorc
    
thirdparty: port zope.interface to relative imports...

              r37195
            
      from __future__ import absolute_import

      from .interface import Declaration

        Gregory Szorc
    
thirdparty: vendor zope.interface 4.4.3...

              r37193
            
      def _flatten(implements, include_None=0):

          try:

              r = implements.flattened()

          except AttributeError:

              if implements is None:

                  r=()

              else:

                  r = Declaration(implements).flattened()

          if not include_None:

              return r

          r = list(r)

          r.append(None)

          return r

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Gregory Szorc thirdparty: vendor zope.interface 4.4.3...	r37193	##############################################################################
		#
		# Copyright (c) 2002 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.
		#
		##############################################################################
		"""Adapter-style interface registry

		See Adapter class.
		"""
Gregory Szorc thirdparty: port zope.interface to relative imports...	r37195
		from __future__ import absolute_import

		from .interface import Declaration
Gregory Szorc thirdparty: vendor zope.interface 4.4.3...	r37193
		def _flatten(implements, include_None=0):

		try:
		r = implements.flattened()
		except AttributeError:
		if implements is None:
		r=()
		else:
		r = Declaration(implements).flattened()

		if not include_None:
		return r

		r = list(r)
		r.append(None)
		return r