python-dependency-injector/objects/injections.py
2015-07-11 17:21:36 +03:00

46 lines
909 B
Python

"""Injections module."""
from .utils import is_provider
class Injection(object):
"""Base injection class."""
__IS_OBJECTS_INJECTION__ = True
__slots__ = ('name', 'injectable', 'delegate')
def __init__(self, name, injectable, delegate=False):
"""Initializer."""
self.name = name
self.injectable = injectable
self.delegate = delegate
@property
def value(self):
"""Return injectable value."""
if is_provider(self.injectable) and not self.delegate:
return self.injectable()
return self.injectable
class KwArg(Injection):
"""Keyword argument injection."""
__IS_OBJECTS_KWARG_INJECTION__ = True
class Attribute(Injection):
"""Attribute injection."""
__IS_OBJECTS_ATTRIBUTE_INJECTION__ = True
class Method(Injection):
"""Method injection."""
__IS_OBJECTS_METHOD_INJECTION__ = True