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     %ˆÈÇ„B ?Æ¿É 7x    %#ifndef Py_CPYTHON_ABSTRACTOBJECT_H
#  error "this header file must not be included directly"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/* === Object Protocol ================================================== */

#ifdef PY_SSIZE_T_CLEAN
#  define _PyObject_CallMethodId _PyObject_CallMethodId_SizeT
#endif

/* Convert keyword arguments from the FASTCALL (stack: C array, kwnames: tuple)
   format to a Python dictionary ("kwargs" dict).

   The type of kwnames keys is not checked. The final function getting
   arguments is responsible to check if all keys are strings, for example using
   PyArg_ParseTupleAndKeywords() or PyArg_ValidateKeywordArguments().

   Duplicate keys are merged using the last value. If duplicate keys must raise
   an exception, the caller is responsible to implement an explicit keys on
   kwnames. */
PyAPI_FUNC(PyObject *) _PyStack_AsDict(
    PyObject *const *values,
    PyObject *kwnames);

/* Suggested size (number of positional arguments) for arrays of PyObject*
   allocated on a C stack to avoid allocating memory on the heap memory. Such
   array is used to pass positional arguments to call functions of the
   PyObject_Vectorcall() family.

   The size is chosen to not abuse the C stack and so limit the risk of stack
   overflow. The size is also chosen to allow using the small stack for most
   function calls of the Python standard library. On 64-bit CPU, it allocates
   40 bytes on the stack. */
#define _PY_FASTCALL_SMALL_STACK 5

PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult(
    PyThreadState *tstate,
    PyObject *callable,
    PyObject *result,
    const char *where);

/* === Vectorcall protocol (PEP 590) ============================= */

/* Call callable using tp_call. Arguments are like PyObject_Vectorcall()
   or PyObject_FastCallDict() (both forms are supported),
   except that nargs is plainly the number of arguments without flags. */
PyAPI_FUNC(PyObject *) _PyObject_MakeTpCall(
    PyThreadState *tstate,
    PyObject *callable,
    PyObject *const *args, Py_ssize_t nargs,
    PyObject *keywords);

#define PY_VECTORCALL_ARGUMENTS_OFFSET ((size_t)1 << (8 * sizeof(size_t) - 1))

static inline Py_ssize_t
PyVectorcall_NARGS(size_t n)
{
    return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET;
}

static inline vectorcallfunc
PyVectorcall_Function(PyObject *callable)
{
    PyTypeObject *tp;
    Py_ssize_t offset;
    vectorcallfunc ptr;

    assert(callable != NULL);
    tp = Py_TYPE(callable);
    if (!PyType_HasFeature(tp, Py_TPFLAGS_HAVE_VECTORCALL)) {
        return NULL;
    }
    assert(PyCallable_Check(callable));
    offset = tp->tp_vectorcall_offset;
    assert(offset > 0);
    memcpy(&ptr, (char *) callable + offset, sizeof(ptr));
    return ptr;
}

/* Call the callable object 'callable' with the "vectorcall" calling
   convention.

   args is a C array for positional arguments.

   nargsf is the number of positional arguments plus optionally the flag
   PY_VECTORCALL_ARGUMENTS_OFFSET which means that the caller is allowed to
   modify args[-1].

   kwnames is a tuple of keyword names. The values of the keyword arguments
   are stored in "args" after the positional arguments (note that the number
   of keyword arguments does not change nargsf). kwnames can also be NULL if
   there are no keyword arguments.

   keywords must only contain strings and all keys must be unique.

   Return the result on success. Raise an exception and return NULL on
   error. */
static inline PyObject *
_PyObject_VectorcallTstate(PyThreadState *tstate, PyObject *callable,
                           PyObject *const *args, size_t nargsf,
                           PyObject *kwnames)
{
    vectorcallfunc func;
    PyObject *res;

    assert(kwnames == NULL || PyTuple_Check(kwnames));
    assert(args != NULL || PyVectorcall_NARGS(nargsf) == 0);

    func = PyVectorcall_Function(callable);
    if (func == NULL) {
        Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
        return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames);
    }
    res = func(callable, args,