upstream/kallithea Files · rhodecode/lib/vcs/utils/lazy.py

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smarter calculation of showed associated changeset in file source view - before rhodecode showed TIP changeset when initially displaing file source as description of associated commit this can be misleading. Now smart calculate last commit of a file, and show specific commits when switching from history view

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             lazy.py
        
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      class LazyProperty(object):

          """

          Decorator for easier creation of ``property`` from potentially expensive to

          calculate attribute of the class.

          Usage::

            class Foo(object):

                @LazyProperty

                def bar(self):

                    print 'Calculating self._bar'

                    return 42

          Taken from http://blog.pythonisito.com/2008/08/lazy-descriptors.html and

          used widely.

          """

          def __init__(self, func):

              self._func = func

              self.__module__ = func.__module__

              self.__name__ = func.__name__

              self.__doc__ = func.__doc__

          def __get__(self, obj, klass=None):

              if obj is None:

                  return self

              result = obj.__dict__[self.__name__] = self._func(obj)

              return result

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				class LazyProperty(object):
				"""
				Decorator for easier creation of ``property`` from potentially expensive to
				calculate attribute of the class.

				Usage::

				class Foo(object):
				@LazyProperty
				def bar(self):
				print 'Calculating self._bar'
				return 42

				Taken from http://blog.pythonisito.com/2008/08/lazy-descriptors.html and
				used widely.
				"""

				def __init__(self, func):
				self._func = func
				self.__module__ = func.__module__
				self.__name__ = func.__name__
				self.__doc__ = func.__doc__

				def __get__(self, obj, klass=None):
				if obj is None:
				return self
				result = obj.__dict__[self.__name__] = self._func(obj)
				return result