mirror of
https://github.com/graphql-python/graphene.git
synced 2025-10-31 07:57:26 +03:00
Merge branch 'master' into issue-703
This commit is contained in:
Mark Chackerian
commit
00cc97875d
|
|
@ -43,7 +43,7 @@ from .utils.resolve_only_args import resolve_only_args
|
|||
from .utils.module_loading import lazy_import
|
||||
|
||||
|
||||
VERSION = (2, 1, 2, "final", 0)
|
||||
VERSION = (2, 1, 3, "final", 0)
|
||||
|
||||
__version__ = get_version(VERSION)
|
||||
|
||||
|
|
|
|||
|
|
@ -2,10 +2,7 @@ from __future__ import absolute_import
|
|||
|
||||
import six
|
||||
|
||||
try:
|
||||
from enum import Enum
|
||||
except ImportError:
|
||||
from .enum import Enum
|
||||
from graphql.pyutils.compat import Enum
|
||||
|
||||
try:
|
||||
from inspect import signature
|
||||
|
|
|
|||
|
|
@ -1,915 +0,0 @@
|
|||
"""Python Enumerations"""
|
||||
|
||||
import sys as _sys
|
||||
|
||||
__all__ = ["Enum", "IntEnum", "unique"]
|
||||
|
||||
version = 1, 1, 6
|
||||
|
||||
pyver = float("%s.%s" % _sys.version_info[:2])
|
||||
|
||||
try:
|
||||
any
|
||||
except NameError:
|
||||
|
||||
def any(iterable):
|
||||
for element in iterable:
|
||||
if element:
|
||||
return True
|
||||
return False
|
||||
|
||||
|
||||
try:
|
||||
from collections import OrderedDict
|
||||
except ImportError:
|
||||
OrderedDict = None
|
||||
|
||||
try:
|
||||
basestring
|
||||
except NameError:
|
||||
# In Python 2 basestring is the ancestor of both str and unicode
|
||||
# in Python 3 it's just str, but was missing in 3.1
|
||||
basestring = str
|
||||
|
||||
try:
|
||||
unicode
|
||||
except NameError:
|
||||
# In Python 3 unicode no longer exists (it's just str)
|
||||
unicode = str
|
||||
|
||||
|
||||
class _RouteClassAttributeToGetattr(object):
|
||||
"""Route attribute access on a class to __getattr__.
|
||||
|
||||
This is a descriptor, used to define attributes that act differently when
|
||||
accessed through an instance and through a class. Instance access remains
|
||||
normal, but access to an attribute through a class will be routed to the
|
||||
class's __getattr__ method; this is done by raising AttributeError.
|
||||
|
||||
"""
|
||||
|
||||
def __init__(self, fget=None):
|
||||
self.fget = fget
|
||||
|
||||
def __get__(self, instance, ownerclass=None):
|
||||
if instance is None:
|
||||
raise AttributeError()
|
||||
return self.fget(instance)
|
||||
|
||||
def __set__(self, instance, value):
|
||||
raise AttributeError("can't set attribute")
|
||||
|
||||
def __delete__(self, instance):
|
||||
raise AttributeError("can't delete attribute")
|
||||
|
||||
|
||||
def _is_descriptor(obj):
|
||||
"""Returns True if obj is a descriptor, False otherwise."""
|
||||
return (
|
||||
hasattr(obj, "__get__") or hasattr(obj, "__set__") or hasattr(obj, "__delete__")
|
||||
)
|
||||
|
||||
|
||||
def _is_dunder(name):
|
||||
"""Returns True if a __dunder__ name, False otherwise."""
|
||||
return (
|
||||
len(name) > 4
|
||||
and name[:2] == name[-2:] == "__"
|
||||
and name[2:3] != "_"
|
||||
and name[-3:-2] != "_"
|
||||
)
|
||||
|
||||
|
||||
def _is_sunder(name):
|
||||
"""Returns True if a _sunder_ name, False otherwise."""
|
||||
return (
|
||||
len(name) > 2
|
||||
and name[0] == name[-1] == "_"
|
||||
and name[1:2] != "_"
|
||||
and name[-2:-1] != "_"
|
||||
)
|
||||
|
||||
|
||||
def _make_class_unpicklable(cls):
|
||||
"""Make the given class un-picklable."""
|
||||
|
||||
def _break_on_call_reduce(self, protocol=None):
|
||||
raise TypeError("%r cannot be pickled" % self)
|
||||
|
||||
cls.__reduce_ex__ = _break_on_call_reduce
|
||||
cls.__module__ = "<unknown>"
|
||||
|
||||
|
||||
class _EnumDict(OrderedDict):
|
||||
"""Track enum member order and ensure member names are not reused.
|
||||
|
||||
EnumMeta will use the names found in self._member_names as the
|
||||
enumeration member names.
|
||||
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
super(_EnumDict, self).__init__()
|
||||
self._member_names = []
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
"""Changes anything not dundered or not a descriptor.
|
||||
|
||||
If a descriptor is added with the same name as an enum member, the name
|
||||
is removed from _member_names (this may leave a hole in the numerical
|
||||
sequence of values).
|
||||
|
||||
If an enum member name is used twice, an error is raised; duplicate
|
||||
values are not checked for.
|
||||
|
||||
Single underscore (sunder) names are reserved.
|
||||
|
||||
Note: in 3.x __order__ is simply discarded as a not necessary piece
|
||||
leftover from 2.x
|
||||
|
||||
"""
|
||||
if pyver >= 3.0 and key in ("_order_", "__order__"):
|
||||
return
|
||||
elif key == "__order__":
|
||||
key = "_order_"
|
||||
if _is_sunder(key):
|
||||
if key != "_order_":
|
||||
raise ValueError("_names_ are reserved for future Enum use")
|
||||
elif _is_dunder(key):
|
||||
pass
|
||||
elif key in self._member_names:
|
||||
# descriptor overwriting an enum?
|
||||
raise TypeError("Attempted to reuse key: %r" % key)
|
||||
elif not _is_descriptor(value):
|
||||
if key in self:
|
||||
# enum overwriting a descriptor?
|
||||
raise TypeError("Key already defined as: %r" % self[key])
|
||||
self._member_names.append(key)
|
||||
super(_EnumDict, self).__setitem__(key, value)
|
||||
|
||||
|
||||
# Dummy value for Enum as EnumMeta explicity checks for it, but of course until
|
||||
# EnumMeta finishes running the first time the Enum class doesn't exist. This
|
||||
# is also why there are checks in EnumMeta like `if Enum is not None`
|
||||
Enum = None
|
||||
|
||||
|
||||
class EnumMeta(type):
|
||||
"""Metaclass for Enum"""
|
||||
|
||||
@classmethod
|
||||
def __prepare__(metacls, cls, bases):
|
||||
return _EnumDict()
|
||||
|
||||
def __new__(metacls, cls, bases, classdict):
|
||||
# an Enum class is final once enumeration items have been defined; it
|
||||
# cannot be mixed with other types (int, float, etc.) if it has an
|
||||
# inherited __new__ unless a new __new__ is defined (or the resulting
|
||||
# class will fail).
|
||||
if isinstance(classdict, dict):
|
||||
original_dict = classdict
|
||||
classdict = _EnumDict()
|
||||
for k, v in original_dict.items():
|
||||
classdict[k] = v
|
||||
|
||||
member_type, first_enum = metacls._get_mixins_(bases)
|
||||
__new__, save_new, use_args = metacls._find_new_(
|
||||
classdict, member_type, first_enum
|
||||
)
|
||||
# save enum items into separate mapping so they don't get baked into
|
||||
# the new class
|
||||
members = {k: classdict[k] for k in classdict._member_names}
|
||||
for name in classdict._member_names:
|
||||
del classdict[name]
|
||||
|
||||
# py2 support for definition order
|
||||
_order_ = classdict.get("_order_")
|
||||
if _order_ is None:
|
||||
if pyver < 3.0:
|
||||
try:
|
||||
_order_ = [
|
||||
name
|
||||
for (name, value) in sorted(
|
||||
members.items(), key=lambda item: item[1]
|
||||
)
|
||||
]
|
||||
except TypeError:
|
||||
_order_ = [name for name in sorted(members.keys())]
|
||||
else:
|
||||
_order_ = classdict._member_names
|
||||
else:
|
||||
del classdict["_order_"]
|
||||
if pyver < 3.0:
|
||||
_order_ = _order_.replace(",", " ").split()
|
||||
aliases = [name for name in members if name not in _order_]
|
||||
_order_ += aliases
|
||||
|
||||
# check for illegal enum names (any others?)
|
||||
invalid_names = set(members) & {"mro"}
|
||||
if invalid_names:
|
||||
raise ValueError(
|
||||
"Invalid enum member name(s): {}".format(", ".join(invalid_names))
|
||||
)
|
||||
|
||||
# save attributes from super classes so we know if we can take
|
||||
# the shortcut of storing members in the class dict
|
||||
base_attributes = {a for b in bases for a in b.__dict__}
|
||||
# create our new Enum type
|
||||
enum_class = super(EnumMeta, metacls).__new__(metacls, cls, bases, classdict)
|
||||
enum_class._member_names_ = [] # names in random order
|
||||
if OrderedDict is not None:
|
||||
enum_class._member_map_ = OrderedDict()
|
||||
else:
|
||||
enum_class._member_map_ = {} # name->value map
|
||||
enum_class._member_type_ = member_type
|
||||
|
||||
# Reverse value->name map for hashable values.
|
||||
enum_class._value2member_map_ = {}
|
||||
|
||||
# instantiate them, checking for duplicates as we go
|
||||
# we instantiate first instead of checking for duplicates first in case
|
||||
# a custom __new__ is doing something funky with the values -- such as
|
||||
# auto-numbering ;)
|
||||
if __new__ is None:
|
||||
__new__ = enum_class.__new__
|
||||
for member_name in _order_:
|
||||
value = members[member_name]
|
||||
if not isinstance(value, tuple):
|
||||
args = (value,)
|
||||
else:
|
||||
args = value
|
||||
if member_type is tuple: # special case for tuple enums
|
||||
args = (args,) # wrap it one more time
|
||||
if not use_args or not args:
|
||||
enum_member = __new__(enum_class)
|
||||
if not hasattr(enum_member, "_value_"):
|
||||
enum_member._value_ = value
|
||||
else:
|
||||
enum_member = __new__(enum_class, *args)
|
||||
if not hasattr(enum_member, "_value_"):
|
||||
enum_member._value_ = member_type(*args)
|
||||
value = enum_member._value_
|
||||
enum_member._name_ = member_name
|
||||
enum_member.__objclass__ = enum_class
|
||||
enum_member.__init__(*args)
|
||||
# If another member with the same value was already defined, the
|
||||
# new member becomes an alias to the existing one.
|
||||
for name, canonical_member in enum_class._member_map_.items():
|
||||
if canonical_member.value == enum_member._value_:
|
||||
enum_member = canonical_member
|
||||
break
|
||||
else:
|
||||
# Aliases don't appear in member names (only in __members__).
|
||||
enum_class._member_names_.append(member_name)
|
||||
# performance boost for any member that would not shadow
|
||||
# a DynamicClassAttribute (aka _RouteClassAttributeToGetattr)
|
||||
if member_name not in base_attributes:
|
||||
setattr(enum_class, member_name, enum_member)
|
||||
# now add to _member_map_
|
||||
enum_class._member_map_[member_name] = enum_member
|
||||
try:
|
||||
# This may fail if value is not hashable. We can't add the value
|
||||
# to the map, and by-value lookups for this value will be
|
||||
# linear.
|
||||
enum_class._value2member_map_[value] = enum_member
|
||||
except TypeError:
|
||||
pass
|
||||
|
||||
# If a custom type is mixed into the Enum, and it does not know how
|
||||
# to pickle itself, pickle.dumps will succeed but pickle.loads will
|
||||
# fail. Rather than have the error show up later and possibly far
|
||||
# from the source, sabotage the pickle protocol for this class so
|
||||
# that pickle.dumps also fails.
|
||||
#
|
||||
# However, if the new class implements its own __reduce_ex__, do not
|
||||
# sabotage -- it's on them to make sure it works correctly. We use
|
||||
# __reduce_ex__ instead of any of the others as it is preferred by
|
||||
# pickle over __reduce__, and it handles all pickle protocols.
|
||||
unpicklable = False
|
||||
if "__reduce_ex__" not in classdict:
|
||||
if member_type is not object:
|
||||
methods = (
|
||||
"__getnewargs_ex__",
|
||||
"__getnewargs__",
|
||||
"__reduce_ex__",
|
||||
"__reduce__",
|
||||
)
|
||||
if not any(m in member_type.__dict__ for m in methods):
|
||||
_make_class_unpicklable(enum_class)
|
||||
unpicklable = True
|
||||
|
||||
# double check that repr and friends are not the mixin's or various
|
||||
# things break (such as pickle)
|
||||
for name in ("__repr__", "__str__", "__format__", "__reduce_ex__"):
|
||||
class_method = getattr(enum_class, name)
|
||||
getattr(member_type, name, None)
|
||||
enum_method = getattr(first_enum, name, None)
|
||||
if name not in classdict and class_method is not enum_method:
|
||||
if name == "__reduce_ex__" and unpicklable:
|
||||
continue
|
||||
setattr(enum_class, name, enum_method)
|
||||
|
||||
# method resolution and int's are not playing nice
|
||||
# Python's less than 2.6 use __cmp__
|
||||
|
||||
if pyver < 2.6:
|
||||
|
||||
if issubclass(enum_class, int):
|
||||
setattr(enum_class, "__cmp__", getattr(int, "__cmp__"))
|
||||
|
||||
elif pyver < 3.0:
|
||||
|
||||
if issubclass(enum_class, int):
|
||||
for method in (
|
||||
"__le__",
|
||||
"__lt__",
|
||||
"__gt__",
|
||||
"__ge__",
|
||||
"__eq__",
|
||||
"__ne__",
|
||||
"__hash__",
|
||||
):
|
||||
setattr(enum_class, method, getattr(int, method))
|
||||
|
||||
# replace any other __new__ with our own (as long as Enum is not None,
|
||||
# anyway) -- again, this is to support pickle
|
||||
if Enum is not None:
|
||||
# if the user defined their own __new__, save it before it gets
|
||||
# clobbered in case they subclass later
|
||||
if save_new:
|
||||
setattr(enum_class, "__member_new__", enum_class.__dict__["__new__"])
|
||||
setattr(enum_class, "__new__", Enum.__dict__["__new__"])
|
||||
return enum_class
|
||||
|
||||
def __bool__(cls):
|
||||
"""
|
||||
classes/types should always be True.
|
||||
"""
|
||||
return True
|
||||
|
||||
def __call__(cls, value, names=None, module=None, type=None, start=1):
|
||||
"""Either returns an existing member, or creates a new enum class.
|
||||
|
||||
This method is used both when an enum class is given a value to match
|
||||
to an enumeration member (i.e. Color(3)) and for the functional API
|
||||
(i.e. Color = Enum('Color', names='red green blue')).
|
||||
|
||||
When used for the functional API: `module`, if set, will be stored in
|
||||
the new class' __module__ attribute; `type`, if set, will be mixed in
|
||||
as the first base class.
|
||||
|
||||
Note: if `module` is not set this routine will attempt to discover the
|
||||
calling module by walking the frame stack; if this is unsuccessful
|
||||
the resulting class will not be pickleable.
|
||||
|
||||
"""
|
||||
if names is None: # simple value lookup
|
||||
return cls.__new__(cls, value)
|
||||
# otherwise, functional API: we're creating a new Enum type
|
||||
return cls._create_(value, names, module=module, type=type, start=start)
|
||||
|
||||
def __contains__(cls, member):
|
||||
return isinstance(member, cls) and member.name in cls._member_map_
|
||||
|
||||
def __delattr__(cls, attr):
|
||||
# nicer error message when someone tries to delete an attribute
|
||||
# (see issue19025).
|
||||
if attr in cls._member_map_:
|
||||
raise AttributeError("%s: cannot delete Enum member." % cls.__name__)
|
||||
super(EnumMeta, cls).__delattr__(attr)
|
||||
|
||||
def __dir__(self):
|
||||
return [
|
||||
"__class__",
|
||||
"__doc__",
|
||||
"__members__",
|
||||
"__module__",
|
||||
] + self._member_names_
|
||||
|
||||
@property
|
||||
def __members__(cls):
|
||||
"""Returns a mapping of member name->value.
|
||||
|
||||
This mapping lists all enum members, including aliases. Note that this
|
||||
is a copy of the internal mapping.
|
||||
|
||||
"""
|
||||
return cls._member_map_.copy()
|
||||
|
||||
def __getattr__(cls, name):
|
||||
"""Return the enum member matching `name`
|
||||
|
||||
We use __getattr__ instead of descriptors or inserting into the enum
|
||||
class' __dict__ in order to support `name` and `value` being both
|
||||
properties for enum members (which live in the class' __dict__) and
|
||||
enum members themselves.
|
||||
|
||||
"""
|
||||
if _is_dunder(name):
|
||||
raise AttributeError(name)
|
||||
try:
|
||||
return cls._member_map_[name]
|
||||
except KeyError:
|
||||
raise AttributeError(name)
|
||||
|
||||
def __getitem__(cls, name):
|
||||
return cls._member_map_[name]
|
||||
|
||||
def __iter__(cls):
|
||||
return (cls._member_map_[name] for name in cls._member_names_)
|
||||
|
||||
def __reversed__(cls):
|
||||
return (cls._member_map_[name] for name in reversed(cls._member_names_))
|
||||
|
||||
def __len__(cls):
|
||||
return len(cls._member_names_)
|
||||
|
||||
__nonzero__ = __bool__
|
||||
|
||||
def __repr__(cls):
|
||||
return "<enum %r>" % cls.__name__
|
||||
|
||||
def __setattr__(cls, name, value):
|
||||
"""Block attempts to reassign Enum members.
|
||||
|
||||
A simple assignment to the class namespace only changes one of the
|
||||
several possible ways to get an Enum member from the Enum class,
|
||||
resulting in an inconsistent Enumeration.
|
||||
|
||||
"""
|
||||
member_map = cls.__dict__.get("_member_map_", {})
|
||||
if name in member_map:
|
||||
raise AttributeError("Cannot reassign members.")
|
||||
super(EnumMeta, cls).__setattr__(name, value)
|
||||
|
||||
def _create_(cls, class_name, names=None, module=None, type=None, start=1):
|
||||
"""Convenience method to create a new Enum class.
|
||||
|
||||
`names` can be:
|
||||
|
||||
* A string containing member names, separated either with spaces or
|
||||
commas. Values are auto-numbered from 1.
|
||||
* An iterable of member names. Values are auto-numbered from 1.
|
||||
* An iterable of (member name, value) pairs.
|
||||
* A mapping of member name -> value.
|
||||
|
||||
"""
|
||||
if pyver < 3.0:
|
||||
# if class_name is unicode, attempt a conversion to ASCII
|
||||
if isinstance(class_name, unicode):
|
||||
try:
|
||||
class_name = class_name.encode("ascii")
|
||||
except UnicodeEncodeError:
|
||||
raise TypeError("%r is not representable in ASCII" % class_name)
|
||||
metacls = cls.__class__
|
||||
if type is None:
|
||||
bases = (cls,)
|
||||
else:
|
||||
bases = (type, cls)
|
||||
classdict = metacls.__prepare__(class_name, bases)
|
||||
_order_ = []
|
||||
|
||||
# special processing needed for names?
|
||||
if isinstance(names, basestring):
|
||||
names = names.replace(",", " ").split()
|
||||
if isinstance(names, (tuple, list)) and isinstance(names[0], basestring):
|
||||
names = [(e, i + start) for (i, e) in enumerate(names)]
|
||||
|
||||
# Here, names is either an iterable of (name, value) or a mapping.
|
||||
item = None # in case names is empty
|
||||
for item in names:
|
||||
if isinstance(item, basestring):
|
||||
member_name, member_value = item, names[item]
|
||||
else:
|
||||
member_name, member_value = item
|
||||
classdict[member_name] = member_value
|
||||
_order_.append(member_name)
|
||||
# only set _order_ in classdict if name/value was not from a mapping
|
||||
if not isinstance(item, basestring):
|
||||
classdict["_order_"] = " ".join(_order_)
|
||||
enum_class = metacls.__new__(metacls, class_name, bases, classdict)
|
||||
|
||||
# TODO: replace the frame hack if a blessed way to know the calling
|
||||
# module is ever developed
|
||||
if module is None:
|
||||
try:
|
||||
module = _sys._getframe(2).f_globals["__name__"]
|
||||
except (AttributeError, ValueError):
|
||||
pass
|
||||
if module is None:
|
||||
_make_class_unpicklable(enum_class)
|
||||
else:
|
||||
enum_class.__module__ = module
|
||||
|
||||
return enum_class
|
||||
|
||||
@staticmethod
|
||||
def _get_mixins_(bases):
|
||||
"""Returns the type for creating enum members, and the first inherited
|
||||
enum class.
|
||||
|
||||
bases: the tuple of bases that was given to __new__
|
||||
|
||||
"""
|
||||
if not bases or Enum is None:
|
||||
return object, Enum
|
||||
|
||||
# double check that we are not subclassing a class with existing
|
||||
# enumeration members; while we're at it, see if any other data
|
||||
# type has been mixed in so we can use the correct __new__
|
||||
member_type = first_enum = None
|
||||
for base in bases:
|
||||
if base is not Enum and issubclass(base, Enum) and base._member_names_:
|
||||
raise TypeError("Cannot extend enumerations")
|
||||
# base is now the last base in bases
|
||||
if not issubclass(base, Enum):
|
||||
raise TypeError(
|
||||
"new enumerations must be created as "
|
||||
"`ClassName([mixin_type,] enum_type)`"
|
||||
)
|
||||
|
||||
# get correct mix-in type (either mix-in type of Enum subclass, or
|
||||
# first base if last base is Enum)
|
||||
if not issubclass(bases[0], Enum):
|
||||
member_type = bases[0] # first data type
|
||||
first_enum = bases[-1] # enum type
|
||||
else:
|
||||
for base in bases[0].__mro__:
|
||||
# most common: (IntEnum, int, Enum, object)
|
||||
# possible: (<Enum 'AutoIntEnum'>, <Enum 'IntEnum'>,
|
||||
# <class 'int'>, <Enum 'Enum'>,
|
||||
# <class 'object'>)
|
||||
if issubclass(base, Enum):
|
||||
if first_enum is None:
|
||||
first_enum = base
|
||||
else:
|
||||
if member_type is None:
|
||||
member_type = base
|
||||
|
||||
return member_type, first_enum
|
||||
|
||||
if pyver < 3.0:
|
||||
|
||||
@staticmethod
|
||||
def _find_new_(classdict, member_type, first_enum):
|
||||
"""Returns the __new__ to be used for creating the enum members.
|
||||
|
||||
classdict: the class dictionary given to __new__
|
||||
member_type: the data type whose __new__ will be used by default
|
||||
first_enum: enumeration to check for an overriding __new__
|
||||
|
||||
"""
|
||||
# now find the correct __new__, checking to see of one was defined
|
||||
# by the user; also check earlier enum classes in case a __new__ was
|
||||
# saved as __member_new__
|
||||
__new__ = classdict.get("__new__", None)
|
||||
if __new__:
|
||||
return None, True, True # __new__, save_new, use_args
|
||||
|
||||
N__new__ = getattr(None, "__new__")
|
||||
O__new__ = getattr(object, "__new__")
|
||||
if Enum is None:
|
||||
E__new__ = N__new__
|
||||
else:
|
||||
E__new__ = Enum.__dict__["__new__"]
|
||||
# check all possibles for __member_new__ before falling back to
|
||||
# __new__
|
||||
for method in ("__member_new__", "__new__"):
|
||||
for possible in (member_type, first_enum):
|
||||
try:
|
||||
target = possible.__dict__[method]
|
||||
except (AttributeError, KeyError):
|
||||
target = getattr(possible, method, None)
|
||||
if target not in [None, N__new__, O__new__, E__new__]:
|
||||
if method == "__member_new__":
|
||||
classdict["__new__"] = target
|
||||
return None, False, True
|
||||
if isinstance(target, staticmethod):
|
||||
target = target.__get__(member_type)
|
||||
__new__ = target
|
||||
break
|
||||
if __new__ is not None:
|
||||
break
|
||||
else:
|
||||
__new__ = object.__new__
|
||||
|
||||
# if a non-object.__new__ is used then whatever value/tuple was
|
||||
# assigned to the enum member name will be passed to __new__ and to the
|
||||
# new enum member's __init__
|
||||
if __new__ is object.__new__:
|
||||
use_args = False
|
||||
else:
|
||||
use_args = True
|
||||
|
||||
return __new__, False, use_args
|
||||
|
||||
else:
|
||||
|
||||
@staticmethod
|
||||
def _find_new_(classdict, member_type, first_enum):
|
||||
"""Returns the __new__ to be used for creating the enum members.
|
||||
|
||||
classdict: the class dictionary given to __new__
|
||||
member_type: the data type whose __new__ will be used by default
|
||||
first_enum: enumeration to check for an overriding __new__
|
||||
|
||||
"""
|
||||
# now find the correct __new__, checking to see of one was defined
|
||||
# by the user; also check earlier enum classes in case a __new__ was
|
||||
# saved as __member_new__
|
||||
__new__ = classdict.get("__new__", None)
|
||||
|
||||
# should __new__ be saved as __member_new__ later?
|
||||
save_new = __new__ is not None
|
||||
|
||||
if __new__ is None:
|
||||
# check all possibles for __member_new__ before falling back to
|
||||
# __new__
|
||||
for method in ("__member_new__", "__new__"):
|
||||
for possible in (member_type, first_enum):
|
||||
target = getattr(possible, method, None)
|
||||
if target not in (
|
||||
None,
|
||||
None.__new__,
|
||||
object.__new__,
|
||||
Enum.__new__,
|
||||
):
|
||||
__new__ = target
|
||||
break
|
||||
if __new__ is not None:
|
||||
break
|
||||
else:
|
||||
__new__ = object.__new__
|
||||
|
||||
# if a non-object.__new__ is used then whatever value/tuple was
|
||||
# assigned to the enum member name will be passed to __new__ and to the
|
||||
# new enum member's __init__
|
||||
if __new__ is object.__new__:
|
||||
use_args = False
|
||||
else:
|
||||
use_args = True
|
||||
|
||||
return __new__, save_new, use_args
|
||||
|
||||
|
||||
########################################################
|
||||
# In order to support Python 2 and 3 with a single
|
||||
# codebase we have to create the Enum methods separately
|
||||
# and then use the `type(name, bases, dict)` method to
|
||||
# create the class.
|
||||
########################################################
|
||||
temp_enum_dict = {}
|
||||
temp_enum_dict[
|
||||
"__doc__"
|
||||
] = "Generic enumeration.\n\n Derive from this class to define new enumerations.\n\n"
|
||||
|
||||
|
||||
def __new__(cls, value):
|
||||
# all enum instances are actually created during class construction
|
||||
# without calling this method; this method is called by the metaclass'
|
||||
# __call__ (i.e. Color(3) ), and by pickle
|
||||
if isinstance(value, cls):
|
||||
# For lookups like Color(Color.red)
|
||||
value = value.value
|
||||
# return value
|
||||
# by-value search for a matching enum member
|
||||
# see if it's in the reverse mapping (for hashable values)
|
||||
try:
|
||||
if value in cls._value2member_map_:
|
||||
return cls._value2member_map_[value]
|
||||
except TypeError:
|
||||
# not there, now do long search -- O(n) behavior
|
||||
for member in cls._member_map_.values():
|
||||
if member.value == value:
|
||||
return member
|
||||
raise ValueError("{} is not a valid {}".format(value, cls.__name__))
|
||||
|
||||
|
||||
temp_enum_dict["__new__"] = __new__
|
||||
del __new__
|
||||
|
||||
|
||||
def __repr__(self):
|
||||
return "<{}.{}: {!r}>".format(self.__class__.__name__, self._name_, self._value_)
|
||||
|
||||
|
||||
temp_enum_dict["__repr__"] = __repr__
|
||||
del __repr__
|
||||
|
||||
|
||||
def __str__(self):
|
||||
return "{}.{}".format(self.__class__.__name__, self._name_)
|
||||
|
||||
|
||||
temp_enum_dict["__str__"] = __str__
|
||||
del __str__
|
||||
|
||||
if pyver >= 3.0:
|
||||
|
||||
def __dir__(self):
|
||||
added_behavior = [
|
||||
m
|
||||
for cls in self.__class__.mro()
|
||||
for m in cls.__dict__
|
||||
if m[0] != "_" and m not in self._member_map_
|
||||
]
|
||||
return ["__class__", "__doc__", "__module__"] + added_behavior
|
||||
|
||||
temp_enum_dict["__dir__"] = __dir__
|
||||
del __dir__
|
||||
|
||||
|
||||
def __format__(self, format_spec):
|
||||
# mixed-in Enums should use the mixed-in type's __format__, otherwise
|
||||
# we can get strange results with the Enum name showing up instead of
|
||||
# the value
|
||||
|
||||
# pure Enum branch
|
||||
if self._member_type_ is object:
|
||||
cls = str
|
||||
val = str(self)
|
||||
# mix-in branch
|
||||
else:
|
||||
cls = self._member_type_
|
||||
val = self.value
|
||||
return cls.__format__(val, format_spec)
|
||||
|
||||
|
||||
temp_enum_dict["__format__"] = __format__
|
||||
del __format__
|
||||
|
||||
|
||||
####################################
|
||||
# Python's less than 2.6 use __cmp__
|
||||
|
||||
if pyver < 2.6:
|
||||
|
||||
def __cmp__(self, other):
|
||||
if isinstance(other, self.__class__):
|
||||
if self is other:
|
||||
return 0
|
||||
return -1
|
||||
return NotImplemented
|
||||
raise TypeError(
|
||||
"unorderable types: %s() and %s()"
|
||||
% (self.__class__.__name__, other.__class__.__name__)
|
||||
)
|
||||
|
||||
temp_enum_dict["__cmp__"] = __cmp__
|
||||
del __cmp__
|
||||
|
||||
else:
|
||||
|
||||
def __le__(self, other):
|
||||
raise TypeError(
|
||||
"unorderable types: %s() <= %s()"
|
||||
% (self.__class__.__name__, other.__class__.__name__)
|
||||
)
|
||||
|
||||
temp_enum_dict["__le__"] = __le__
|
||||
del __le__
|
||||
|
||||
def __lt__(self, other):
|
||||
raise TypeError(
|
||||
"unorderable types: %s() < %s()"
|
||||
% (self.__class__.__name__, other.__class__.__name__)
|
||||
)
|
||||
|
||||
temp_enum_dict["__lt__"] = __lt__
|
||||
del __lt__
|
||||
|
||||
def __ge__(self, other):
|
||||
raise TypeError(
|
||||
"unorderable types: %s() >= %s()"
|
||||
% (self.__class__.__name__, other.__class__.__name__)
|
||||
)
|
||||
|
||||
temp_enum_dict["__ge__"] = __ge__
|
||||
del __ge__
|
||||
|
||||
def __gt__(self, other):
|
||||
raise TypeError(
|
||||
"unorderable types: %s() > %s()"
|
||||
% (self.__class__.__name__, other.__class__.__name__)
|
||||
)
|
||||
|
||||
temp_enum_dict["__gt__"] = __gt__
|
||||
del __gt__
|
||||
|
||||
|
||||
def __eq__(self, other):
|
||||
if isinstance(other, self.__class__):
|
||||
return self is other
|
||||
return NotImplemented
|
||||
|
||||
|
||||
temp_enum_dict["__eq__"] = __eq__
|
||||
del __eq__
|
||||
|
||||
|
||||
def __ne__(self, other):
|
||||
if isinstance(other, self.__class__):
|
||||
return self is not other
|
||||
return NotImplemented
|
||||
|
||||
|
||||
temp_enum_dict["__ne__"] = __ne__
|
||||
del __ne__
|
||||
|
||||
|
||||
def __hash__(self):
|
||||
return hash(self._name_)
|
||||
|
||||
|
||||
temp_enum_dict["__hash__"] = __hash__
|
||||
del __hash__
|
||||
|
||||
|
||||
def __reduce_ex__(self, proto):
|
||||
return self.__class__, (self._value_,)
|
||||
|
||||
|
||||
temp_enum_dict["__reduce_ex__"] = __reduce_ex__
|
||||
del __reduce_ex__
|
||||
|
||||
# _RouteClassAttributeToGetattr is used to provide access to the `name`
|
||||
# and `value` properties of enum members while keeping some measure of
|
||||
# protection from modification, while still allowing for an enumeration
|
||||
# to have members named `name` and `value`. This works because enumeration
|
||||
# members are not set directly on the enum class -- __getattr__ is
|
||||
# used to look them up.
|
||||
|
||||
|
||||
@_RouteClassAttributeToGetattr
|
||||
def name(self):
|
||||
return self._name_
|
||||
|
||||
|
||||
temp_enum_dict["name"] = name
|
||||
del name
|
||||
|
||||
|
||||
@_RouteClassAttributeToGetattr
|
||||
def value(self):
|
||||
return self._value_
|
||||
|
||||
|
||||
temp_enum_dict["value"] = value
|
||||
del value
|
||||
|
||||
|
||||
@classmethod
|
||||
def _convert(cls, name, module, filter, source=None):
|
||||
"""
|
||||
Create a new Enum subclass that replaces a collection of global constants
|
||||
"""
|
||||
# convert all constants from source (or module) that pass filter() to
|
||||
# a new Enum called name, and export the enum and its members back to
|
||||
# module;
|
||||
# also, replace the __reduce_ex__ method so unpickling works in
|
||||
# previous Python versions
|
||||
module_globals = vars(_sys.modules[module])
|
||||
if source:
|
||||
source = vars(source)
|
||||
else:
|
||||
source = module_globals
|
||||
members = {name: value for name, value in source.items() if filter(name)}
|
||||
cls = cls(name, members, module=module)
|
||||
cls.__reduce_ex__ = _reduce_ex_by_name
|
||||
module_globals.update(cls.__members__)
|
||||
module_globals[name] = cls
|
||||
return cls
|
||||
|
||||
|
||||
temp_enum_dict["_convert"] = _convert
|
||||
del _convert
|
||||
|
||||
Enum = EnumMeta("Enum", (object,), temp_enum_dict)
|
||||
del temp_enum_dict
|
||||
|
||||
# Enum has now been created
|
||||
###########################
|
||||
|
||||
|
||||
class IntEnum(int, Enum):
|
||||
"""Enum where members are also (and must be) ints"""
|
||||
|
||||
|
||||
def _reduce_ex_by_name(self, proto):
|
||||
return self.name
|
||||
|
||||
|
||||
def unique(enumeration):
|
||||
"""Class decorator that ensures only unique members exist in an enumeration."""
|
||||
duplicates = []
|
||||
for name, member in enumeration.__members__.items():
|
||||
if name != member.name:
|
||||
duplicates.append((name, member.name))
|
||||
if duplicates:
|
||||
duplicate_names = ", ".join(
|
||||
["{} -> {}".format(alias, name) for (alias, name) in duplicates]
|
||||
)
|
||||
raise ValueError(
|
||||
"duplicate names found in {!r}: {}".format(enumeration, duplicate_names)
|
||||
)
|
||||
return enumeration
|
||||
|
|
@ -1,24 +0,0 @@
|
|||
from ..enum import _is_dunder, _is_sunder
|
||||
|
||||
|
||||
def test__is_dunder():
|
||||
dunder_names = ["__i__", "__test__"]
|
||||
non_dunder_names = ["test", "__test", "_test", "_test_", "test__", ""]
|
||||
|
||||
for name in dunder_names:
|
||||
assert _is_dunder(name) is True
|
||||
|
||||
for name in non_dunder_names:
|
||||
assert _is_dunder(name) is False
|
||||
|
||||
|
||||
def test__is_sunder():
|
||||
sunder_names = ["_i_", "_test_"]
|
||||
|
||||
non_sunder_names = ["__i__", "_i__", "__i_", ""]
|
||||
|
||||
for name in sunder_names:
|
||||
assert _is_sunder(name) is True
|
||||
|
||||
for name in non_sunder_names:
|
||||
assert _is_sunder(name) is False
|
||||
|
|
@ -152,7 +152,6 @@ def test_mutation_allow_to_have_custom_args():
|
|||
|
||||
def test_mutation_as_subclass():
|
||||
class BaseCreateUser(Mutation):
|
||||
|
||||
class Arguments:
|
||||
name = String()
|
||||
|
||||
|
|
@ -162,7 +161,6 @@ def test_mutation_as_subclass():
|
|||
return args
|
||||
|
||||
class CreateUserWithPlanet(BaseCreateUser):
|
||||
|
||||
class Arguments(BaseCreateUser.Arguments):
|
||||
planet = String()
|
||||
|
||||
|
|
@ -178,17 +176,14 @@ def test_mutation_as_subclass():
|
|||
a = String()
|
||||
|
||||
schema = Schema(query=Query, mutation=MyMutation)
|
||||
result = schema.execute(''' mutation mymutation {
|
||||
result = schema.execute(
|
||||
""" mutation mymutation {
|
||||
createUserWithPlanet(name:"Peter", planet: "earth") {
|
||||
name
|
||||
planet
|
||||
}
|
||||
}
|
||||
''')
|
||||
"""
|
||||
)
|
||||
assert not result.errors
|
||||
assert result.data == {
|
||||
'createUserWithPlanet': {
|
||||
'name': 'Peter',
|
||||
'planet': 'earth',
|
||||
}
|
||||
}
|
||||
assert result.data == {"createUserWithPlanet": {"name": "Peter", "planet": "earth"}}
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user