1 
2 /* Method object interface */
3 
4 #ifndef Py_METHODOBJECT_H
5 #define Py_METHODOBJECT_H
6 #ifdef __cplusplus
7 extern "C" {
8 #endif
9 
10 /* This is about the type 'builtin_function_or_method',
11    not Python methods in user-defined classes.  See classobject.h
12    for the latter. */
13 
14 PyAPI_DATA(PyTypeObject) PyCFunction_Type;
15 
16 #define PyCFunction_Check(op) (Py_TYPE(op) == &PyCFunction_Type)
17 
18 typedef PyObject *(*PyCFunction)(PyObject *, PyObject *);
19 typedef PyObject *(*_PyCFunctionFast) (PyObject *self, PyObject **args,
20                                        Py_ssize_t nargs, PyObject *kwnames);
21 typedef PyObject *(*PyCFunctionWithKeywords)(PyObject *, PyObject *,
22                                              PyObject *);
23 typedef PyObject *(*PyNoArgsFunction)(PyObject *);
24 
25 PyAPI_FUNC(PyCFunction) PyCFunction_GetFunction(PyObject *);
26 PyAPI_FUNC(PyObject *) PyCFunction_GetSelf(PyObject *);
27 PyAPI_FUNC(int) PyCFunction_GetFlags(PyObject *);
28 
29 /* Macros for direct access to these values. Type checks are *not*
30    done, so use with care. */
31 #ifndef Py_LIMITED_API
32 #define PyCFunction_GET_FUNCTION(func) \
33         (((PyCFunctionObject *)func) -> m_ml -> ml_meth)
34 #define PyCFunction_GET_SELF(func) \
35         (((PyCFunctionObject *)func) -> m_ml -> ml_flags & METH_STATIC ? \
36          NULL : ((PyCFunctionObject *)func) -> m_self)
37 #define PyCFunction_GET_FLAGS(func) \
38         (((PyCFunctionObject *)func) -> m_ml -> ml_flags)
39 #endif
40 PyAPI_FUNC(PyObject *) PyCFunction_Call(PyObject *, PyObject *, PyObject *);
41 
42 #ifndef Py_LIMITED_API
43 PyAPI_FUNC(PyObject *) _PyCFunction_FastCallDict(PyObject *func,
44     PyObject **args,
45     Py_ssize_t nargs,
46     PyObject *kwargs);
47 
48 PyAPI_FUNC(PyObject *) _PyCFunction_FastCallKeywords(PyObject *func,
49     PyObject **stack,
50     Py_ssize_t nargs,
51     PyObject *kwnames);
52 #endif
53 
54 struct PyMethodDef {
55     const char  *ml_name;   /* The name of the built-in function/method */
56     PyCFunction ml_meth;    /* The C function that implements it */
57     int         ml_flags;   /* Combination of METH_xxx flags, which mostly
58                                describe the args expected by the C func */
59     const char  *ml_doc;    /* The __doc__ attribute, or NULL */
60 };
61 typedef struct PyMethodDef PyMethodDef;
62 
63 #define PyCFunction_New(ML, SELF) PyCFunction_NewEx((ML), (SELF), NULL)
64 PyAPI_FUNC(PyObject *) PyCFunction_NewEx(PyMethodDef *, PyObject *,
65                                          PyObject *);
66 
67 /* Flag passed to newmethodobject */
68 /* #define METH_OLDARGS  0x0000   -- unsupported now */
69 #define METH_VARARGS  0x0001
70 #define METH_KEYWORDS 0x0002
71 /* METH_NOARGS and METH_O must not be combined with the flags above. */
72 #define METH_NOARGS   0x0004
73 #define METH_O        0x0008
74 
75 /* METH_CLASS and METH_STATIC are a little different; these control
76    the construction of methods for a class.  These cannot be used for
77    functions in modules. */
78 #define METH_CLASS    0x0010
79 #define METH_STATIC   0x0020
80 
81 /* METH_COEXIST allows a method to be entered even though a slot has
82    already filled the entry.  When defined, the flag allows a separate
83    method, "__contains__" for example, to coexist with a defined
84    slot like sq_contains. */
85 
86 #define METH_COEXIST   0x0040
87 
88 #ifndef Py_LIMITED_API
89 #define METH_FASTCALL  0x0080
90 
91 typedef struct {
92     PyObject_HEAD
93     PyMethodDef *m_ml; /* Description of the C function to call */
94     PyObject    *m_self; /* Passed as 'self' arg to the C func, can be NULL */
95     PyObject    *m_module; /* The __module__ attribute, can be anything */
96     PyObject    *m_weakreflist; /* List of weak references */
97 } PyCFunctionObject;
98 #endif
99 
100 PyAPI_FUNC(int) PyCFunction_ClearFreeList(void);
101 
102 #ifndef Py_LIMITED_API
103 PyAPI_FUNC(void) _PyCFunction_DebugMallocStats(FILE *out);
104 PyAPI_FUNC(void) _PyMethod_DebugMallocStats(FILE *out);
105 #endif
106 
107 #ifdef __cplusplus
108 }
109 #endif
110 #endif /* !Py_METHODOBJECT_H */
111