class Singleton(_base.BaseValue): (source)
Known subclasses: pytype.abstract._singletons.Empty
, pytype.abstract._singletons.Unsolvable
, pytype.overlays.typing_overlay.NoReturn
A Singleton class must only be instantiated once. This is essentially an ABC for Unsolvable, Empty, and others.
Method | __new__ |
Undocumented |
Method | call |
Call this abstract value with the given arguments. |
Method | compute |
Undocumented |
Method | get |
Fetch a special attribute (e.g., __get__, __iter__). |
Method | instantiate |
Create an instance of self. |
Class Variable | _instance |
Undocumented |
Inherited from BaseValue
:
Method | __init__ |
Basic initializer for all BaseValues. |
Method | __repr__ |
Undocumented |
Method | argcount |
Returns the minimum number of arguments needed for a call. |
Method | default |
Undocumented |
Method | get |
Undocumented |
Method | get |
Gets a default type key. See get_type_key. |
Method | get |
Get the class's type for the type parameter. |
Method | get |
Undocumented |
Method | get |
Get the type an instance of us would have. |
Method | get |
Get a cfg.Variable of the instance's values for the type parameter. |
Method | get |
Get this value's __new__ method, if it isn't object.__new__. |
Method | get |
Build a key from the information used to perform type matching. |
Method | has |
Return True if this is a function and has a **kwargs parameter. |
Method | has |
Return True if this is a function and has a *args parameter. |
Method | init |
Allow metaprogramming via __init_subclass__. |
Method | is |
Undocumented |
Method | module |
Undocumented |
Method | official |
Undocumented |
Method | property |
Bind this value to the given self or cls. |
Method | register |
Treating self as a class definition, register an instance of it. |
Method | should |
Undocumented |
Method | to |
Undocumented |
Method | to |
Undocumented |
Method | to |
Get a PyTD definition for this object. |
Method | to |
Get a PyTD type representing this object, as seen at a node. |
Method | to |
Build a variable out of this abstract value. |
Method | unique |
Get unique parameter subtypes as bindings. |
Method | update |
Update the official name. |
Class Variable | formal |
Undocumented |
Instance Variable | cls |
Undocumented |
Instance Variable | final |
Undocumented |
Instance Variable | from |
Undocumented |
Instance Variable | is |
Undocumented |
Instance Variable | is |
Undocumented |
Instance Variable | mro |
Undocumented |
Instance Variable | name |
Undocumented |
Instance Variable | slots |
Undocumented |
Property | all |
Undocumented |
Property | full |
Undocumented |
Property | module |
Undocumented |
Property | official |
Undocumented |
Property | template |
Undocumented |
Method | _unique |
Get unique parameter subtypes as variables. |
Instance Variable | _all |
Undocumented |
Instance Variable | _module |
Undocumented |
Instance Variable | _official |
Undocumented |
Instance Variable | _template |
Undocumented |
Inherited from ContextWeakrefMixin
(via BaseValue
):
Class Variable | __slots__ |
Undocumented |
Instance Variable | ctx |
Undocumented |
Property | ctx |
Undocumented |
pytype.abstract._base.BaseValue.call
Call this abstract value with the given arguments. The posargs and namedargs arguments may be modified by this function. Args: node: The CFGNode calling this function func: The cfg.Binding containing this function. args: Arguments for the call. alias_map: A datatypes.UnionFind, which stores all the type renaming information, mapping of type parameter name to its representative. Returns: A tuple (cfg.Node, cfg.Variable). The CFGNode corresponds to the function's "return" statement(s). Raises: function.FailedFunctionCall Make the call as required by this specific kind of atomic value, and make sure to annotate the results correctly with the origins (val and also other values appearing in the arguments).
Create an instance of self. Note that this method does not call __init__, so the instance may be incomplete. If you need a complete instance, use self.ctx.vm.init_class instead. Args: node: The current node. container: Optionally, the value that contains self. (See TypeParameter.) Returns: The instance.