unsteal-ref ( ref -- )

Vocabulary

python.errors

Inputs

ref	a python object

Outputs

None

Word description

Unsteals a reference. Used by wrappers that call Python functions that steal references. Functions such as PyTuple_SetItem takes ownership of the references passed in and relieves Factor of its burden to decrement them.

Definition

USING: accessors alien combinators.short-circuit
destructors.private kernel namespaces python.ffi sequences ;

IN: python.errors

: unsteal-ref ( ref -- )
    always-destructors get [
        {
            [ nip Py_DecRef-destructor? ]
            [ alien>> [ alien-address ] bi@ = ]
        } 2&& not
    ] with filter! drop ;