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authorMichael Trier <mtrier@gmail.com>2008-05-07 16:49:48 -0400
committerMichael Trier <mtrier@gmail.com>2008-05-07 16:49:48 -0400
commit33ebe7acec14b25c5f84f35a664803fcab2f7781 (patch)
tree960b40fe368a9882221bcdd8635b9080dec01ec6 /lib/git_python/lazy.py
downloadgitpython-33ebe7acec14b25c5f84f35a664803fcab2f7781.tar.gz
initial project
Diffstat (limited to 'lib/git_python/lazy.py')
-rw-r--r--lib/git_python/lazy.py26
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/git_python/lazy.py b/lib/git_python/lazy.py
new file mode 100644
index 00000000..f6d31e8d
--- /dev/null
+++ b/lib/git_python/lazy.py
@@ -0,0 +1,26 @@
+class LazyMixin(object):
+ lazy_properties = []
+
+ def __init__(self):
+ self.__baked__ = False
+
+ def __getattribute__(self, attr):
+ val = object.__getattribute__(self, attr)
+ if val is not None:
+ return val
+ else:
+ self.__prebake__()
+ return object.__getattribute__(self, attr)
+
+ def __bake__(self):
+ """ This method should be overridden in the derived class. """
+ raise NotImplementedError(" '__bake__' method has not been implemented.")
+
+ def __prebake__(self):
+ if self.__baked__:
+ return
+ self.__bake__()
+ self.__baked__ = True
+
+ def __bake_it__(self):
+ self.__baked__ = True