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/* Function object interface */
#ifndef Py_LIMITED_API
#ifndef Py_FUNCOBJECT_H
#define Py_FUNCOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
#define _Py_COMMON_FIELDS(PREFIX) \
PyObject *PREFIX ## globals; \
PyObject *PREFIX ## builtins; \
PyObject *PREFIX ## name; \
PyObject *PREFIX ## qualname; \
PyObject *PREFIX ## code; /* A code object, the __code__ attribute */ \
PyObject *PREFIX ## defaults; /* NULL or a tuple */ \
PyObject *PREFIX ## kwdefaults; /* NULL or a dict */ \
PyObject *PREFIX ## closure; /* NULL or a tuple of cell objects */
typedef struct {
_Py_COMMON_FIELDS(fc_)
} PyFrameConstructor;
/* Function objects and code objects should not be confused with each other:
*
* Function objects are created by the execution of the 'def' statement.
* They reference a code object in their __code__ attribute, which is a
* purely syntactic object, i.e. nothing more than a compiled version of some
* source code lines. There is one code object per source code "fragment",
* but each code object can be referenced by zero or many function objects
* depending only on how many times the 'def' statement in the source was
* executed so far.
*/
typedef struct {
PyObject_HEAD
_Py_COMMON_FIELDS(func_)
PyObject *func_doc; /* The __doc__ attribute, can be anything */
PyObject *func_dict; /* The __dict__ attribute, a dict or NULL */
PyObject *func_weakreflist; /* List of weak references */
PyObject *func_module; /* The __module__ attribute, can be anything */
PyObject *func_annotations; /* Annotations, a dict or NULL */
PyObject *func_typeparams; /* Tuple of active type variables or NULL */
vectorcallfunc vectorcall;
/* Version number for use by specializer.
* Can set to non-zero when we want to specialize.
* Will be set to zero if any of these change:
* defaults
* kwdefaults (only if the object changes, not the contents of the dict)
* code
* annotations
* vectorcall function pointer */
uint32_t func_version;
/* Invariant:
* func_closure contains the bindings for func_code->co_freevars, so
* PyTuple_Size(func_closure) == PyCode_GetNumFree(func_code)
* (func_closure may be NULL if PyCode_GetNumFree(func_code) == 0).
*/
} PyFunctionObject;
#undef _Py_COMMON_FIELDS
PyAPI_DATA(PyTypeObject) PyFunction_Type;
#define PyFunction_Check(op) Py_IS_TYPE((op), &PyFunction_Type)
PyAPI_FUNC(PyObject *) PyFunction_New(PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_NewWithQualName(PyObject *, PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_GetCode(PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_GetGlobals(PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_GetModule(PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_GetDefaults(PyObject *);
PyAPI_FUNC(int) PyFunction_SetDefaults(PyObject *, PyObject *);
PyAPI_FUNC(void) PyFunction_SetVectorcall(PyFunctionObject *, vectorcallfunc);
PyAPI_FUNC(PyObject *) PyFunction_GetKwDefaults(PyObject *);
PyAPI_FUNC(int) PyFunction_SetKwDefaults(PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_GetClosure(PyObject *);
PyAPI_FUNC(int) PyFunction_SetClosure(PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) PyFunction_GetAnnotations(PyObject *);
PyAPI_FUNC(int) PyFunction_SetAnnotations(PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) _PyFunction_Vectorcall(
PyObject *func,
PyObject *const *stack,
size_t nargsf,
PyObject *kwnames);
#define _PyFunction_CAST(func) \
(assert(PyFunction_Check(func)), _Py_CAST(PyFunctionObject*, func))
/* Static inline functions for direct access to these values.
Type checks are *not* done, so use with care. */
static inline PyObject* PyFunction_GET_CODE(PyObject *func) {
return _PyFunction_CAST(func)->func_code;
}
#define PyFunction_GET_CODE(func) PyFunction_GET_CODE(_PyObject_CAST(func))
static inline PyObject* PyFunction_GET_GLOBALS(PyObject *func) {
return _PyFunction_CAST(func)->func_globals;
}
#define PyFunction_GET_GLOBALS(func) PyFunction_GET_GLOBALS(_PyObject_CAST(func))
static inline PyObject* PyFunction_GET_MODULE(PyObject *func) {
return _PyFunction_CAST(func)->func_module;
}
#define PyFunction_GET_MODULE(func) PyFunction_GET_MODULE(_PyObject_CAST(func))
static inline PyObject* PyFunction_GET_DEFAULTS(PyObject *func) {
return _PyFunction_CAST(func)->func_defaults;
}
#define PyFunction_GET_DEFAULTS(func) PyFunction_GET_DEFAULTS(_PyObject_CAST(func))
static inline PyObject* PyFunction_GET_KW_DEFAULTS(PyObject *func) {
return _PyFunction_CAST(func)->func_kwdefaults;
}
#define PyFunction_GET_KW_DEFAULTS(func) PyFunction_GET_KW_DEFAULTS(_PyObject_CAST(func))
static inline PyObject* PyFunction_GET_CLOSURE(PyObject *func) {
return _PyFunction_CAST(func)->func_closure;
}
#define PyFunction_GET_CLOSURE(func) PyFunction_GET_CLOSURE(_PyObject_CAST(func))
static inline PyObject* PyFunction_GET_ANNOTATIONS(PyObject *func) {
return _PyFunction_CAST(func)->func_annotations;
}
#define PyFunction_GET_ANNOTATIONS(func) PyFunction_GET_ANNOTATIONS(_PyObject_CAST(func))
/* The classmethod and staticmethod types lives here, too */
PyAPI_DATA(PyTypeObject) PyClassMethod_Type;
PyAPI_DATA(PyTypeObject) PyStaticMethod_Type;
PyAPI_FUNC(PyObject *) PyClassMethod_New(PyObject *);
PyAPI_FUNC(PyObject *) PyStaticMethod_New(PyObject *);
#define PY_FOREACH_FUNC_EVENT(V) \
V(CREATE) \
V(DESTROY) \
V(MODIFY_CODE) \
V(MODIFY_DEFAULTS) \
V(MODIFY_KWDEFAULTS)
typedef enum {
#define PY_DEF_EVENT(EVENT) PyFunction_EVENT_##EVENT,
PY_FOREACH_FUNC_EVENT(PY_DEF_EVENT)
#undef PY_DEF_EVENT
} PyFunction_WatchEvent;
/*
* A callback that is invoked for different events in a function's lifecycle.
*
* The callback is invoked with a borrowed reference to func, after it is
* created and before it is modified or destroyed. The callback should not
* modify func.
*
* When a function's code object, defaults, or kwdefaults are modified the
* callback will be invoked with the respective event and new_value will
* contain a borrowed reference to the new value that is about to be stored in
* the function. Otherwise the third argument is NULL.
*
* If the callback returns with an exception set, it must return -1. Otherwise
* it should return 0.
*/
typedef int (*PyFunction_WatchCallback)(
PyFunction_WatchEvent event,
PyFunctionObject *func,
PyObject *new_value);
/*
* Register a per-interpreter callback that will be invoked for function lifecycle
* events.
*
* Returns a handle that may be passed to PyFunction_ClearWatcher on success,
* or -1 and sets an error if no more handles are available.
*/
PyAPI_FUNC(int) PyFunction_AddWatcher(PyFunction_WatchCallback callback);
/*
* Clear the watcher associated with the watcher_id handle.
*
* Returns 0 on success or -1 if no watcher exists for the supplied id.
*/
PyAPI_FUNC(int) PyFunction_ClearWatcher(int watcher_id);
#ifdef __cplusplus
}
#endif
#endif /* !Py_FUNCOBJECT_H */
#endif /* Py_LIMITED_API */
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