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author | Patrick Williams <patrick@stwcx.xyz> | 2016-08-17 14:31:25 -0500 |
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committer | Patrick Williams <patrick@stwcx.xyz> | 2016-08-22 16:43:26 +0000 |
commit | 60f9d69e016b11c468c98ea75ba0a60c44afbbc4 (patch) | |
tree | ecb49581a9e41a37943c22cd9ef3f63451b20ee7 /import-layers/yocto-poky/meta/lib/oe/classutils.py | |
parent | e18c61205e0234b03697129c20cc69c9b3940efc (diff) | |
download | blackbird-openbmc-60f9d69e016b11c468c98ea75ba0a60c44afbbc4.tar.gz blackbird-openbmc-60f9d69e016b11c468c98ea75ba0a60c44afbbc4.zip |
yocto-poky: Move to import-layers subdir
We are going to import additional layers, so create a subdir to
hold all of the layers that we import with git-subtree.
Change-Id: I6f732153a22be8ca663035c518837e3cc5ec0799
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Diffstat (limited to 'import-layers/yocto-poky/meta/lib/oe/classutils.py')
-rw-r--r-- | import-layers/yocto-poky/meta/lib/oe/classutils.py | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/import-layers/yocto-poky/meta/lib/oe/classutils.py b/import-layers/yocto-poky/meta/lib/oe/classutils.py new file mode 100644 index 000000000..58188fdd6 --- /dev/null +++ b/import-layers/yocto-poky/meta/lib/oe/classutils.py @@ -0,0 +1,43 @@ +class ClassRegistry(type): + """Maintain a registry of classes, indexed by name. + +Note that this implementation requires that the names be unique, as it uses +a dictionary to hold the classes by name. + +The name in the registry can be overridden via the 'name' attribute of the +class, and the 'priority' attribute controls priority. The prioritized() +method returns the registered classes in priority order. + +Subclasses of ClassRegistry may define an 'implemented' property to exert +control over whether the class will be added to the registry (e.g. to keep +abstract base classes out of the registry).""" + priority = 0 + class __metaclass__(type): + """Give each ClassRegistry their own registry""" + def __init__(cls, name, bases, attrs): + cls.registry = {} + type.__init__(cls, name, bases, attrs) + + def __init__(cls, name, bases, attrs): + super(ClassRegistry, cls).__init__(name, bases, attrs) + try: + if not cls.implemented: + return + except AttributeError: + pass + + try: + cls.name + except AttributeError: + cls.name = name + cls.registry[cls.name] = cls + + @classmethod + def prioritized(tcls): + return sorted(tcls.registry.values(), + key=lambda v: v.priority, reverse=True) + + def unregister(cls): + for key in cls.registry.keys(): + if cls.registry[key] is cls: + del cls.registry[key] |