|
|
##############################################################################
|
|
|
#
|
|
|
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
|
|
|
# All Rights Reserved.
|
|
|
#
|
|
|
# This software is subject to the provisions of the Zope Public License,
|
|
|
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
|
|
|
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
|
|
|
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
|
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
|
|
|
# FOR A PARTICULAR PURPOSE.
|
|
|
#
|
|
|
##############################################################################
|
|
|
"""Interface object implementation
|
|
|
"""
|
|
|
from __future__ import absolute_import, generators
|
|
|
|
|
|
import sys
|
|
|
from types import MethodType
|
|
|
from types import FunctionType
|
|
|
import warnings
|
|
|
import weakref
|
|
|
|
|
|
from .exceptions import Invalid
|
|
|
from .ro import ro
|
|
|
|
|
|
|
|
|
CO_VARARGS = 4
|
|
|
CO_VARKEYWORDS = 8
|
|
|
TAGGED_DATA = '__interface_tagged_values__'
|
|
|
|
|
|
_decorator_non_return = object()
|
|
|
|
|
|
def invariant(call):
|
|
|
f_locals = sys._getframe(1).f_locals
|
|
|
tags = f_locals.setdefault(TAGGED_DATA, {})
|
|
|
invariants = tags.setdefault('invariants', [])
|
|
|
invariants.append(call)
|
|
|
return _decorator_non_return
|
|
|
|
|
|
|
|
|
def taggedValue(key, value):
|
|
|
"""Attaches a tagged value to an interface at definition time."""
|
|
|
f_locals = sys._getframe(1).f_locals
|
|
|
tagged_values = f_locals.setdefault(TAGGED_DATA, {})
|
|
|
tagged_values[key] = value
|
|
|
return _decorator_non_return
|
|
|
|
|
|
|
|
|
class Element(object):
|
|
|
|
|
|
# We can't say this yet because we don't have enough
|
|
|
# infrastructure in place.
|
|
|
#
|
|
|
#implements(IElement)
|
|
|
|
|
|
def __init__(self, __name__, __doc__=''):
|
|
|
"""Create an 'attribute' description
|
|
|
"""
|
|
|
if not __doc__ and __name__.find(' ') >= 0:
|
|
|
__doc__ = __name__
|
|
|
__name__ = None
|
|
|
|
|
|
self.__name__=__name__
|
|
|
self.__doc__=__doc__
|
|
|
self.__tagged_values = {}
|
|
|
|
|
|
def getName(self):
|
|
|
""" Returns the name of the object. """
|
|
|
return self.__name__
|
|
|
|
|
|
def getDoc(self):
|
|
|
""" Returns the documentation for the object. """
|
|
|
return self.__doc__
|
|
|
|
|
|
def getTaggedValue(self, tag):
|
|
|
""" Returns the value associated with 'tag'. """
|
|
|
return self.__tagged_values[tag]
|
|
|
|
|
|
def queryTaggedValue(self, tag, default=None):
|
|
|
""" Returns the value associated with 'tag'. """
|
|
|
return self.__tagged_values.get(tag, default)
|
|
|
|
|
|
def getTaggedValueTags(self):
|
|
|
""" Returns a list of all tags. """
|
|
|
return self.__tagged_values.keys()
|
|
|
|
|
|
def setTaggedValue(self, tag, value):
|
|
|
""" Associates 'value' with 'key'. """
|
|
|
self.__tagged_values[tag] = value
|
|
|
|
|
|
class SpecificationBasePy(object):
|
|
|
|
|
|
def providedBy(self, ob):
|
|
|
"""Is the interface implemented by an object
|
|
|
"""
|
|
|
spec = providedBy(ob)
|
|
|
return self in spec._implied
|
|
|
|
|
|
def implementedBy(self, cls):
|
|
|
"""Test whether the specification is implemented by a class or factory.
|
|
|
|
|
|
Raise TypeError if argument is neither a class nor a callable.
|
|
|
"""
|
|
|
spec = implementedBy(cls)
|
|
|
return self in spec._implied
|
|
|
|
|
|
def isOrExtends(self, interface):
|
|
|
"""Is the interface the same as or extend the given interface
|
|
|
"""
|
|
|
return interface in self._implied
|
|
|
|
|
|
__call__ = isOrExtends
|
|
|
|
|
|
SpecificationBase = SpecificationBasePy
|
|
|
try:
|
|
|
from ._zope_interface_coptimizations import SpecificationBase
|
|
|
except ImportError:
|
|
|
pass
|
|
|
|
|
|
_marker = object()
|
|
|
class InterfaceBasePy(object):
|
|
|
"""Base class that wants to be replaced with a C base :)
|
|
|
"""
|
|
|
|
|
|
def __call__(self, obj, alternate=_marker):
|
|
|
"""Adapt an object to the interface
|
|
|
"""
|
|
|
conform = getattr(obj, '__conform__', None)
|
|
|
if conform is not None:
|
|
|
adapter = self._call_conform(conform)
|
|
|
if adapter is not None:
|
|
|
return adapter
|
|
|
|
|
|
adapter = self.__adapt__(obj)
|
|
|
|
|
|
if adapter is not None:
|
|
|
return adapter
|
|
|
elif alternate is not _marker:
|
|
|
return alternate
|
|
|
else:
|
|
|
raise TypeError("Could not adapt", obj, self)
|
|
|
|
|
|
def __adapt__(self, obj):
|
|
|
"""Adapt an object to the reciever
|
|
|
"""
|
|
|
if self.providedBy(obj):
|
|
|
return obj
|
|
|
|
|
|
for hook in adapter_hooks:
|
|
|
adapter = hook(self, obj)
|
|
|
if adapter is not None:
|
|
|
return adapter
|
|
|
|
|
|
|
|
|
InterfaceBase = InterfaceBasePy
|
|
|
try:
|
|
|
from ._zope_interface_coptimizations import InterfaceBase
|
|
|
except ImportError:
|
|
|
pass
|
|
|
|
|
|
|
|
|
adapter_hooks = []
|
|
|
try:
|
|
|
from ._zope_interface_coptimizations import adapter_hooks
|
|
|
except ImportError:
|
|
|
pass
|
|
|
|
|
|
|
|
|
class Specification(SpecificationBase):
|
|
|
"""Specifications
|
|
|
|
|
|
An interface specification is used to track interface declarations
|
|
|
and component registrations.
|
|
|
|
|
|
This class is a base class for both interfaces themselves and for
|
|
|
interface specifications (declarations).
|
|
|
|
|
|
Specifications are mutable. If you reassign their bases, their
|
|
|
relations with other specifications are adjusted accordingly.
|
|
|
"""
|
|
|
|
|
|
# Copy some base class methods for speed
|
|
|
isOrExtends = SpecificationBase.isOrExtends
|
|
|
providedBy = SpecificationBase.providedBy
|
|
|
|
|
|
def __init__(self, bases=()):
|
|
|
self._implied = {}
|
|
|
self.dependents = weakref.WeakKeyDictionary()
|
|
|
self.__bases__ = tuple(bases)
|
|
|
|
|
|
def subscribe(self, dependent):
|
|
|
self.dependents[dependent] = self.dependents.get(dependent, 0) + 1
|
|
|
|
|
|
def unsubscribe(self, dependent):
|
|
|
n = self.dependents.get(dependent, 0) - 1
|
|
|
if not n:
|
|
|
del self.dependents[dependent]
|
|
|
elif n > 0:
|
|
|
self.dependents[dependent] = n
|
|
|
else:
|
|
|
raise KeyError(dependent)
|
|
|
|
|
|
def __setBases(self, bases):
|
|
|
# Register ourselves as a dependent of our old bases
|
|
|
for b in self.__bases__:
|
|
|
b.unsubscribe(self)
|
|
|
|
|
|
# Register ourselves as a dependent of our bases
|
|
|
self.__dict__['__bases__'] = bases
|
|
|
for b in bases:
|
|
|
b.subscribe(self)
|
|
|
|
|
|
self.changed(self)
|
|
|
|
|
|
__bases__ = property(
|
|
|
|
|
|
lambda self: self.__dict__.get('__bases__', ()),
|
|
|
__setBases,
|
|
|
)
|
|
|
|
|
|
def changed(self, originally_changed):
|
|
|
"""We, or something we depend on, have changed
|
|
|
"""
|
|
|
try:
|
|
|
del self._v_attrs
|
|
|
except AttributeError:
|
|
|
pass
|
|
|
|
|
|
implied = self._implied
|
|
|
implied.clear()
|
|
|
|
|
|
ancestors = ro(self)
|
|
|
|
|
|
try:
|
|
|
if Interface not in ancestors:
|
|
|
ancestors.append(Interface)
|
|
|
except NameError:
|
|
|
pass # defining Interface itself
|
|
|
|
|
|
self.__sro__ = tuple(ancestors)
|
|
|
self.__iro__ = tuple([ancestor for ancestor in ancestors
|
|
|
if isinstance(ancestor, InterfaceClass)
|
|
|
])
|
|
|
|
|
|
for ancestor in ancestors:
|
|
|
# We directly imply our ancestors:
|
|
|
implied[ancestor] = ()
|
|
|
|
|
|
# Now, advise our dependents of change:
|
|
|
for dependent in tuple(self.dependents.keys()):
|
|
|
dependent.changed(originally_changed)
|
|
|
|
|
|
|
|
|
def interfaces(self):
|
|
|
"""Return an iterator for the interfaces in the specification.
|
|
|
"""
|
|
|
seen = {}
|
|
|
for base in self.__bases__:
|
|
|
for interface in base.interfaces():
|
|
|
if interface not in seen:
|
|
|
seen[interface] = 1
|
|
|
yield interface
|
|
|
|
|
|
|
|
|
def extends(self, interface, strict=True):
|
|
|
"""Does the specification extend the given interface?
|
|
|
|
|
|
Test whether an interface in the specification extends the
|
|
|
given interface
|
|
|
"""
|
|
|
return ((interface in self._implied)
|
|
|
and
|
|
|
((not strict) or (self != interface))
|
|
|
)
|
|
|
|
|
|
def weakref(self, callback=None):
|
|
|
return weakref.ref(self, callback)
|
|
|
|
|
|
def get(self, name, default=None):
|
|
|
"""Query for an attribute description
|
|
|
"""
|
|
|
try:
|
|
|
attrs = self._v_attrs
|
|
|
except AttributeError:
|
|
|
attrs = self._v_attrs = {}
|
|
|
attr = attrs.get(name)
|
|
|
if attr is None:
|
|
|
for iface in self.__iro__:
|
|
|
attr = iface.direct(name)
|
|
|
if attr is not None:
|
|
|
attrs[name] = attr
|
|
|
break
|
|
|
|
|
|
if attr is None:
|
|
|
return default
|
|
|
else:
|
|
|
return attr
|
|
|
|
|
|
class InterfaceClass(Element, InterfaceBase, Specification):
|
|
|
"""Prototype (scarecrow) Interfaces Implementation."""
|
|
|
|
|
|
# We can't say this yet because we don't have enough
|
|
|
# infrastructure in place.
|
|
|
#
|
|
|
#implements(IInterface)
|
|
|
|
|
|
def __init__(self, name, bases=(), attrs=None, __doc__=None,
|
|
|
__module__=None):
|
|
|
|
|
|
if attrs is None:
|
|
|
attrs = {}
|
|
|
|
|
|
if __module__ is None:
|
|
|
__module__ = attrs.get('__module__')
|
|
|
if isinstance(__module__, str):
|
|
|
del attrs['__module__']
|
|
|
else:
|
|
|
try:
|
|
|
# Figure out what module defined the interface.
|
|
|
# This is how cPython figures out the module of
|
|
|
# a class, but of course it does it in C. :-/
|
|
|
__module__ = sys._getframe(1).f_globals['__name__']
|
|
|
except (AttributeError, KeyError): # pragma: no cover
|
|
|
pass
|
|
|
|
|
|
self.__module__ = __module__
|
|
|
|
|
|
d = attrs.get('__doc__')
|
|
|
if d is not None:
|
|
|
if not isinstance(d, Attribute):
|
|
|
if __doc__ is None:
|
|
|
__doc__ = d
|
|
|
del attrs['__doc__']
|
|
|
|
|
|
if __doc__ is None:
|
|
|
__doc__ = ''
|
|
|
|
|
|
Element.__init__(self, name, __doc__)
|
|
|
|
|
|
tagged_data = attrs.pop(TAGGED_DATA, None)
|
|
|
if tagged_data is not None:
|
|
|
for key, val in tagged_data.items():
|
|
|
self.setTaggedValue(key, val)
|
|
|
|
|
|
for base in bases:
|
|
|
if not isinstance(base, InterfaceClass):
|
|
|
raise TypeError('Expected base interfaces')
|
|
|
|
|
|
Specification.__init__(self, bases)
|
|
|
|
|
|
# Make sure that all recorded attributes (and methods) are of type
|
|
|
# `Attribute` and `Method`
|
|
|
for name, attr in list(attrs.items()):
|
|
|
compiler_attributes = (
|
|
|
'__locals__',
|
|
|
'__qualname__',
|
|
|
'__annotations__',
|
|
|
'__firstlineno__',
|
|
|
'__static_attributes__',
|
|
|
)
|
|
|
if name in compiler_attributes:
|
|
|
# __locals__: Python 3 sometimes adds this.
|
|
|
# __qualname__: PEP 3155 (Python 3.3+)
|
|
|
# __annotations__: PEP 3107 (Python 3.0+)
|
|
|
del attrs[name]
|
|
|
continue
|
|
|
if isinstance(attr, Attribute):
|
|
|
attr.interface = self
|
|
|
if not attr.__name__:
|
|
|
attr.__name__ = name
|
|
|
elif isinstance(attr, FunctionType):
|
|
|
attrs[name] = fromFunction(attr, self, name=name)
|
|
|
elif attr is _decorator_non_return:
|
|
|
del attrs[name]
|
|
|
else:
|
|
|
raise InvalidInterface("Concrete attribute, " + name)
|
|
|
|
|
|
self.__attrs = attrs
|
|
|
|
|
|
self.__identifier__ = "%s.%s" % (self.__module__, self.__name__)
|
|
|
|
|
|
def interfaces(self):
|
|
|
"""Return an iterator for the interfaces in the specification.
|
|
|
"""
|
|
|
yield self
|
|
|
|
|
|
def getBases(self):
|
|
|
return self.__bases__
|
|
|
|
|
|
def isEqualOrExtendedBy(self, other):
|
|
|
"""Same interface or extends?"""
|
|
|
return self == other or other.extends(self)
|
|
|
|
|
|
def names(self, all=False):
|
|
|
"""Return the attribute names defined by the interface."""
|
|
|
if not all:
|
|
|
return self.__attrs.keys()
|
|
|
|
|
|
r = self.__attrs.copy()
|
|
|
|
|
|
for base in self.__bases__:
|
|
|
r.update(dict.fromkeys(base.names(all)))
|
|
|
|
|
|
return r.keys()
|
|
|
|
|
|
def __iter__(self):
|
|
|
return iter(self.names(all=True))
|
|
|
|
|
|
def namesAndDescriptions(self, all=False):
|
|
|
"""Return attribute names and descriptions defined by interface."""
|
|
|
if not all:
|
|
|
return self.__attrs.items()
|
|
|
|
|
|
r = {}
|
|
|
for base in self.__bases__[::-1]:
|
|
|
r.update(dict(base.namesAndDescriptions(all)))
|
|
|
|
|
|
r.update(self.__attrs)
|
|
|
|
|
|
return r.items()
|
|
|
|
|
|
def getDescriptionFor(self, name):
|
|
|
"""Return the attribute description for the given name."""
|
|
|
r = self.get(name)
|
|
|
if r is not None:
|
|
|
return r
|
|
|
|
|
|
raise KeyError(name)
|
|
|
|
|
|
__getitem__ = getDescriptionFor
|
|
|
|
|
|
def __contains__(self, name):
|
|
|
return self.get(name) is not None
|
|
|
|
|
|
def direct(self, name):
|
|
|
return self.__attrs.get(name)
|
|
|
|
|
|
def queryDescriptionFor(self, name, default=None):
|
|
|
return self.get(name, default)
|
|
|
|
|
|
def validateInvariants(self, obj, errors=None):
|
|
|
"""validate object to defined invariants."""
|
|
|
for call in self.queryTaggedValue('invariants', []):
|
|
|
try:
|
|
|
call(obj)
|
|
|
except Invalid as e:
|
|
|
if errors is None:
|
|
|
raise
|
|
|
else:
|
|
|
errors.append(e)
|
|
|
for base in self.__bases__:
|
|
|
try:
|
|
|
base.validateInvariants(obj, errors)
|
|
|
except Invalid:
|
|
|
if errors is None:
|
|
|
raise
|
|
|
if errors:
|
|
|
raise Invalid(errors)
|
|
|
|
|
|
def __repr__(self): # pragma: no cover
|
|
|
try:
|
|
|
return self._v_repr
|
|
|
except AttributeError:
|
|
|
name = self.__name__
|
|
|
m = self.__module__
|
|
|
if m:
|
|
|
name = '%s.%s' % (m, name)
|
|
|
r = "<%s %s>" % (self.__class__.__name__, name)
|
|
|
self._v_repr = r
|
|
|
return r
|
|
|
|
|
|
def _call_conform(self, conform):
|
|
|
try:
|
|
|
return conform(self)
|
|
|
except TypeError: # pragma: no cover
|
|
|
# We got a TypeError. It might be an error raised by
|
|
|
# the __conform__ implementation, or *we* may have
|
|
|
# made the TypeError by calling an unbound method
|
|
|
# (object is a class). In the later case, we behave
|
|
|
# as though there is no __conform__ method. We can
|
|
|
# detect this case by checking whether there is more
|
|
|
# than one traceback object in the traceback chain:
|
|
|
if sys.exc_info()[2].tb_next is not None:
|
|
|
# There is more than one entry in the chain, so
|
|
|
# reraise the error:
|
|
|
raise
|
|
|
# This clever trick is from Phillip Eby
|
|
|
|
|
|
return None # pragma: no cover
|
|
|
|
|
|
def __reduce__(self):
|
|
|
return self.__name__
|
|
|
|
|
|
def __cmp(self, other):
|
|
|
# Yes, I did mean to name this __cmp, rather than __cmp__.
|
|
|
# It is a private method used by __lt__ and __gt__.
|
|
|
# I don't want to override __eq__ because I want the default
|
|
|
# __eq__, which is really fast.
|
|
|
"""Make interfaces sortable
|
|
|
|
|
|
TODO: It would ne nice if:
|
|
|
|
|
|
More specific interfaces should sort before less specific ones.
|
|
|
Otherwise, sort on name and module.
|
|
|
|
|
|
But this is too complicated, and we're going to punt on it
|
|
|
for now.
|
|
|
|
|
|
For now, sort on interface and module name.
|
|
|
|
|
|
None is treated as a pseudo interface that implies the loosest
|
|
|
contact possible, no contract. For that reason, all interfaces
|
|
|
sort before None.
|
|
|
|
|
|
"""
|
|
|
if other is None:
|
|
|
return -1
|
|
|
|
|
|
n1 = (getattr(self, '__name__', ''), getattr(self, '__module__', ''))
|
|
|
n2 = (getattr(other, '__name__', ''), getattr(other, '__module__', ''))
|
|
|
|
|
|
# This spelling works under Python3, which doesn't have cmp().
|
|
|
return (n1 > n2) - (n1 < n2)
|
|
|
|
|
|
def __hash__(self):
|
|
|
d = self.__dict__
|
|
|
if '__module__' not in d or '__name__' not in d: # pragma: no cover
|
|
|
warnings.warn('Hashing uninitialized InterfaceClass instance')
|
|
|
return 1
|
|
|
return hash((self.__name__, self.__module__))
|
|
|
|
|
|
def __eq__(self, other):
|
|
|
c = self.__cmp(other)
|
|
|
return c == 0
|
|
|
|
|
|
def __ne__(self, other):
|
|
|
c = self.__cmp(other)
|
|
|
return c != 0
|
|
|
|
|
|
def __lt__(self, other):
|
|
|
c = self.__cmp(other)
|
|
|
return c < 0
|
|
|
|
|
|
def __le__(self, other):
|
|
|
c = self.__cmp(other)
|
|
|
return c <= 0
|
|
|
|
|
|
def __gt__(self, other):
|
|
|
c = self.__cmp(other)
|
|
|
return c > 0
|
|
|
|
|
|
def __ge__(self, other):
|
|
|
c = self.__cmp(other)
|
|
|
return c >= 0
|
|
|
|
|
|
|
|
|
Interface = InterfaceClass("Interface", __module__ = 'zope.interface')
|
|
|
|
|
|
class Attribute(Element):
|
|
|
"""Attribute descriptions
|
|
|
"""
|
|
|
|
|
|
# We can't say this yet because we don't have enough
|
|
|
# infrastructure in place.
|
|
|
#
|
|
|
# implements(IAttribute)
|
|
|
|
|
|
interface = None
|
|
|
|
|
|
|
|
|
class Method(Attribute):
|
|
|
"""Method interfaces
|
|
|
|
|
|
The idea here is that you have objects that describe methods.
|
|
|
This provides an opportunity for rich meta-data.
|
|
|
"""
|
|
|
|
|
|
# We can't say this yet because we don't have enough
|
|
|
# infrastructure in place.
|
|
|
#
|
|
|
# implements(IMethod)
|
|
|
|
|
|
positional = required = ()
|
|
|
_optional = varargs = kwargs = None
|
|
|
def _get_optional(self):
|
|
|
if self._optional is None:
|
|
|
return {}
|
|
|
return self._optional
|
|
|
def _set_optional(self, opt):
|
|
|
self._optional = opt
|
|
|
def _del_optional(self):
|
|
|
self._optional = None
|
|
|
optional = property(_get_optional, _set_optional, _del_optional)
|
|
|
|
|
|
def __call__(self, *args, **kw):
|
|
|
raise BrokenImplementation(self.interface, self.__name__)
|
|
|
|
|
|
def getSignatureInfo(self):
|
|
|
return {'positional': self.positional,
|
|
|
'required': self.required,
|
|
|
'optional': self.optional,
|
|
|
'varargs': self.varargs,
|
|
|
'kwargs': self.kwargs,
|
|
|
}
|
|
|
|
|
|
def getSignatureString(self):
|
|
|
sig = []
|
|
|
for v in self.positional:
|
|
|
sig.append(v)
|
|
|
if v in self.optional.keys():
|
|
|
sig[-1] += "=" + repr(self.optional[v])
|
|
|
if self.varargs:
|
|
|
sig.append("*" + self.varargs)
|
|
|
if self.kwargs:
|
|
|
sig.append("**" + self.kwargs)
|
|
|
|
|
|
return "(%s)" % ", ".join(sig)
|
|
|
|
|
|
def fromFunction(func, interface=None, imlevel=0, name=None):
|
|
|
name = name or func.__name__
|
|
|
method = Method(name, func.__doc__)
|
|
|
defaults = getattr(func, '__defaults__', None) or ()
|
|
|
code = func.__code__
|
|
|
# Number of positional arguments
|
|
|
na = code.co_argcount-imlevel
|
|
|
names = code.co_varnames[imlevel:]
|
|
|
opt = {}
|
|
|
# Number of required arguments
|
|
|
nr = na-len(defaults)
|
|
|
if nr < 0:
|
|
|
defaults=defaults[-nr:]
|
|
|
nr = 0
|
|
|
|
|
|
# Determine the optional arguments.
|
|
|
opt.update(dict(zip(names[nr:], defaults)))
|
|
|
|
|
|
method.positional = names[:na]
|
|
|
method.required = names[:nr]
|
|
|
method.optional = opt
|
|
|
|
|
|
argno = na
|
|
|
|
|
|
# Determine the function's variable argument's name (i.e. *args)
|
|
|
if code.co_flags & CO_VARARGS:
|
|
|
method.varargs = names[argno]
|
|
|
argno = argno + 1
|
|
|
else:
|
|
|
method.varargs = None
|
|
|
|
|
|
# Determine the function's keyword argument's name (i.e. **kw)
|
|
|
if code.co_flags & CO_VARKEYWORDS:
|
|
|
method.kwargs = names[argno]
|
|
|
else:
|
|
|
method.kwargs = None
|
|
|
|
|
|
method.interface = interface
|
|
|
|
|
|
for key, value in func.__dict__.items():
|
|
|
method.setTaggedValue(key, value)
|
|
|
|
|
|
return method
|
|
|
|
|
|
|
|
|
def fromMethod(meth, interface=None, name=None):
|
|
|
if isinstance(meth, MethodType):
|
|
|
func = meth.__func__
|
|
|
else:
|
|
|
func = meth
|
|
|
return fromFunction(func, interface, imlevel=1, name=name)
|
|
|
|
|
|
|
|
|
# Now we can create the interesting interfaces and wire them up:
|
|
|
def _wire():
|
|
|
from .declarations import classImplements
|
|
|
|
|
|
from .interfaces import IAttribute
|
|
|
classImplements(Attribute, IAttribute)
|
|
|
|
|
|
from .interfaces import IMethod
|
|
|
classImplements(Method, IMethod)
|
|
|
|
|
|
from .interfaces import IInterface
|
|
|
classImplements(InterfaceClass, IInterface)
|
|
|
|
|
|
from .interfaces import ISpecification
|
|
|
classImplements(Specification, ISpecification)
|
|
|
|
|
|
# We import this here to deal with module dependencies.
|
|
|
from .declarations import implementedBy
|
|
|
from .declarations import providedBy
|
|
|
from .exceptions import InvalidInterface
|
|
|
from .exceptions import BrokenImplementation
|
|
|
|
