cpython/Include/cpython/methodobject.h
Victor Stinner 29e2245ad5
gh-91320: Add _Py_reinterpret_cast() macro (#91959)
Fix C++ compiler warnings about "old-style cast"
(g++ -Wold-style-cast) in the Python C API.  Use C++
reinterpret_cast<> and static_cast<> casts when the Python C API is
used in C++.

Example of fixed warning:

    Include/object.h:107:43: error: use of old-style cast to
    ‘PyObject*’ {aka ‘struct _object*’} [-Werror=old-style-cast]
    #define _PyObject_CAST(op) ((PyObject*)(op))

Add _Py_reinterpret_cast() and _Py_static_cast() macros.
2022-04-27 10:40:57 +02:00

42 lines
1.6 KiB
C

#ifndef Py_CPYTHON_METHODOBJECT_H
# error "this header file must not be included directly"
#endif
PyAPI_DATA(PyTypeObject) PyCMethod_Type;
#define PyCMethod_CheckExact(op) Py_IS_TYPE(op, &PyCMethod_Type)
#define PyCMethod_Check(op) PyObject_TypeCheck(op, &PyCMethod_Type)
#define _PyCFunctionObject_CAST(func) \
(assert(PyCFunction_Check(func)), \
_Py_reinterpret_cast(PyCFunctionObject*, (func)))
#define _PyCMethodObject_CAST(func) \
(assert(PyCMethod_Check(func)), \
_Py_reinterpret_cast(PyCMethodObject*, (func)))
/* Macros for direct access to these values. Type checks are *not*
done, so use with care. */
#define PyCFunction_GET_FUNCTION(func) \
(_PyCFunctionObject_CAST(func)->m_ml->ml_meth)
#define PyCFunction_GET_SELF(func) \
(_PyCFunctionObject_CAST(func)->m_ml->ml_flags & METH_STATIC ? \
NULL : _PyCFunctionObject_CAST(func)->m_self)
#define PyCFunction_GET_FLAGS(func) \
(_PyCFunctionObject_CAST(func)->m_ml->ml_flags)
#define PyCFunction_GET_CLASS(func) \
(_PyCFunctionObject_CAST(func)->m_ml->ml_flags & METH_METHOD ? \
_PyCMethodObject_CAST(func)->mm_class : NULL)
typedef struct {
PyObject_HEAD
PyMethodDef *m_ml; /* Description of the C function to call */
PyObject *m_self; /* Passed as 'self' arg to the C func, can be NULL */
PyObject *m_module; /* The __module__ attribute, can be anything */
PyObject *m_weakreflist; /* List of weak references */
vectorcallfunc vectorcall;
} PyCFunctionObject;
typedef struct {
PyCFunctionObject func;
PyTypeObject *mm_class; /* Class that defines this method */
} PyCMethodObject;