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/* Method object interface */
#ifndef Py_METHODOBJECT_H
#define Py_METHODOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
// Cast an function to the PyCFunction type to use it with PyMethodDef.
//
// This macro can be used to prevent compiler warnings if the first parameter
// uses a different pointer type than PyObject* (ex: METH_VARARGS and METH_O
// calling conventions).
//
// The macro can also be used for METH_FASTCALL and METH_VARARGS|METH_KEYWORDS
// calling conventions to avoid compiler warnings because the function has more
// than 2 parameters. The macro first casts the function to the
// "void func(void)" type to prevent compiler warnings.
//
// If a function is declared with the METH_NOARGS calling convention, it must
// have 2 parameters. Since the second parameter is unused, Py_UNUSED() can be
// used to prevent a compiler warning. If the function has a single parameter,
// it triggers an undefined behavior when Python calls it with 2 parameters
// (bpo-33012).
#define _PyCFunction_CAST(func) \
_Py_CAST(PyCFunction, _Py_CAST(void(*)(void), (func)))
/* Flag passed to newmethodobject */
#define METH_VARARGS 0x0001
#define METH_KEYWORDS 0x0002
/* METH_NOARGS and METH_O must not be combined with the flags above. */
#define METH_NOARGS 0x0004
#define METH_O 0x0008
/* METH_CLASS and METH_STATIC are a little different; these control
the construction of methods for a class. These cannot be used for
functions in modules. */
#define METH_CLASS 0x0010
#define METH_STATIC 0x0020
/* METH_COEXIST allows a method to be entered eventhough a slot has
already filled the entry. When defined, the flag allows a separate
method, "__contains__" for example, to coexist with a defined
slot like sq_contains. */
#define METH_COEXIST 0x0040
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030A0000
#define METH_FASTCALL 0x0080
#endif
/* METH_METHOD means the function stores an
* additional reference to the class that defines it;
* both self and class are passed to it.
* It uses PyCMethodObject instead of PyCFunctionObject.
* May not be combined with METH_NOARGS, METH_O, METH_CLASS or METH_STATIC.
*/
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03090000
#define METH_METHOD 0x0200
#endif
#define PyCFunction_New(ml, self) PyCFunction_NewEx((ml), (self), NULL)
#define PyCFunction_NewEx(ML, SELF, MOD) PyCMethod_New((ML), (SELF), (MOD), NULL)
/* Macros for direct access to these values. Type checks are *not*
done, so use with care. */
#define PyCFunction_GET_FUNCTION(func) \
(((PyCFunctionObject *)func) -> m_ml -> ml_meth)
#define PyCFunction_GET_SELF(func) \
(((PyCFunctionObject *)func) -> m_ml -> ml_flags & METH_STATIC ? \
NULL : ((PyCFunctionObject *)func) -> m_self)
#define PyCFunction_GET_FLAGS(func) \
(((PyCFunctionObject *)func) -> m_ml -> ml_flags)
#define PyCFunction_GET_CLASS(func) \
(((PyCFunctionObject *)func) -> m_ml -> ml_flags & METH_METHOD ? \
((PyCMethodObject *)func) -> mm_class : NULL)
#ifdef __cplusplus
}
#endif
#endif /* !Py_METHODOBJECT_H */
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