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funcobject.h
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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 */