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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 *(*PyCFunctionWithKeywords)(PyObject *, PyObject *,
20 					     PyObject *);
21 typedef PyObject *(*PyNoArgsFunction)(PyObject *);
22 
23 PyAPI_FUNC(PyCFunction) PyCFunction_GetFunction(PyObject *);
24 PyAPI_FUNC(PyObject *) PyCFunction_GetSelf(PyObject *);
25 PyAPI_FUNC(int) PyCFunction_GetFlags(PyObject *);
26 
27 /* Macros for direct access to these values. Type checks are *not*
28    done, so use with care. */
29 #define PyCFunction_GET_FUNCTION(func) \
30         (((PyCFunctionObject *)func) -> m_ml -> ml_meth)
31 #define PyCFunction_GET_SELF(func) \
32 	(((PyCFunctionObject *)func) -> m_self)
33 #define PyCFunction_GET_FLAGS(func) \
34 	(((PyCFunctionObject *)func) -> m_ml -> ml_flags)
35 PyAPI_FUNC(PyObject *) PyCFunction_Call(PyObject *, PyObject *, PyObject *);
36 
37 struct PyMethodDef {
38     const char	*ml_name;	/* The name of the built-in function/method */
39     PyCFunction  ml_meth;	/* The C function that implements it */
40     int		 ml_flags;	/* Combination of METH_xxx flags, which mostly
41 				   describe the args expected by the C func */
42     const char	*ml_doc;	/* The __doc__ attribute, or NULL */
43 };
44 typedef struct PyMethodDef PyMethodDef;
45 
46 PyAPI_FUNC(PyObject *) Py_FindMethod(PyMethodDef[], PyObject *, const char *);
47 
48 #define PyCFunction_New(ML, SELF) PyCFunction_NewEx((ML), (SELF), NULL)
49 PyAPI_FUNC(PyObject *) PyCFunction_NewEx(PyMethodDef *, PyObject *,
50 					 PyObject *);
51 
52 /* Flag passed to newmethodobject */
53 #define METH_OLDARGS  0x0000
54 #define METH_VARARGS  0x0001
55 #define METH_KEYWORDS 0x0002
56 /* METH_NOARGS and METH_O must not be combined with the flags above. */
57 #define METH_NOARGS   0x0004
58 #define METH_O        0x0008
59 
60 /* METH_CLASS and METH_STATIC are a little different; these control
61    the construction of methods for a class.  These cannot be used for
62    functions in modules. */
63 #define METH_CLASS    0x0010
64 #define METH_STATIC   0x0020
65 
66 /* METH_COEXIST allows a method to be entered eventhough a slot has
67    already filled the entry.  When defined, the flag allows a separate
68    method, "__contains__" for example, to coexist with a defined
69    slot like sq_contains. */
70 
71 #define METH_COEXIST   0x0040
72 
73 typedef struct PyMethodChain {
74     PyMethodDef *methods;		/* Methods of this type */
75     struct PyMethodChain *link;	/* NULL or base type */
76 } PyMethodChain;
77 
78 PyAPI_FUNC(PyObject *) Py_FindMethodInChain(PyMethodChain *, PyObject *,
79                                             const char *);
80 
81 typedef struct {
82     PyObject_HEAD
83     PyMethodDef *m_ml; /* Description of the C function to call */
84     PyObject    *m_self; /* Passed as 'self' arg to the C func, can be NULL */
85     PyObject    *m_module; /* The __module__ attribute, can be anything */
86 } PyCFunctionObject;
87 
88 PyAPI_FUNC(int) PyCFunction_ClearFreeList(void);
89 
90 #ifdef __cplusplus
91 }
92 #endif
93 #endif /* !Py_METHODOBJECT_H */
94