def canonical_name( cls ):
"""Canonical names for plugins are defined as,
.. code-block::
<pkgname>.<plugin-class-name>
where the entire string is lower-cased. This function is to be called only
by PluginMeta class when a plugin class is about to be blue-printed.
"""
# TODO : This is a hack specific to tayra template file. Make it generic.
mod = sys.modules.get( cls.__module__ )
f = getattr( mod, '_ttlfile', getattr(mod, '__file__', None) )
if f and isfile(f) :
return (h.packagedin( abspath(f) ) + '.' + cls.__name__).lower()
else :
return cls.__name__.lower()
def canonical_name(cls):
"""Canonical names for plugins are defined as,
.. code-block::
<pkgname>.<plugin-class-name>
where the entire string is lower-cased. This function is to be called only
by PluginMeta class when a plugin class is about to be blue-printed.
"""
# TODO : This is a hack specific to tayra template file. Make it generic.
mod = sys.modules.get(cls.__module__)
f = getattr(mod, '_ttlfile', getattr(mod, '__file__', None))
if f and isfile(f):
return (h.packagedin(abspath(f)) + '.' + cls.__name__).lower()
else:
return cls.__name__.lower()
def implements( *interfaces ):
"""Plugin classes can use this function to declare ``interfaces`` that
are implemented by them. This function can be called only inside the scope
of a class deriving from :class:`Plugin`."""
frame = sys._getframe(1)
if frame.f_code.co_name in core_classes : return # Skip
# TODO : This is a hack specific to tayra template file. Make it generic.
filen = frame.f_globals.get('_ttlfile', None)
pkg = h.packagedin( abspath(filen) if filen else frame.f_code.co_filename )
nm = (pkg + '.' + frame.f_code.co_name).lower()
for i in interfaces :
if isinstance(i, str) :
i = PluginMeta._interfmap[i]['cls']
if nm in list( PluginMeta._implementers.get(i, {}).keys() ) :
raise Exception(
'Plugin %r implements interface %r twice' % (nm, i) )
PluginMeta._implementers.setdefault( i, {} ).setdefault( nm, '-na-' )
def implements(*interfaces):
"""Plugin classes can use this function to declare ``interfaces`` that
are implemented by them. This function can be called only inside the scope
of a class deriving from :class:`Plugin`."""
frame = sys._getframe(1)
if frame.f_code.co_name in core_classes: return # Skip
# TODO : This is a hack specific to tayra template file. Make it generic.
filen = frame.f_globals.get('_ttlfile', None)
pkg = h.packagedin(abspath(filen) if filen else frame.f_code.co_filename)
nm = (pkg + '.' + frame.f_code.co_name).lower()
for i in interfaces:
if isinstance(i, str):
i = PluginMeta._interfmap[i]['cls']
if nm in list(PluginMeta._implementers.get(i, {}).keys()):
raise Exception('Plugin %r implements interface %r twice' %
(nm, i))
PluginMeta._implementers.setdefault(i, {}).setdefault(nm, '-na-')
