cpython/Include/internal/pycore_genobject.h

#ifndef Py_INTERNAL_GENOBJECT_H
#define Py_INTERNAL_GENOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif

#ifndef Py_BUILD_CORE
#  error "this header requires Py_BUILD_CORE define"
#endif

#include "pycore_frame.h"

/* _PyGenObject_HEAD defines the initial segment of generator
   and coroutine objects. */
#define _PyGenObject_HEAD …                             \

struct _PyGenObject { … };

struct _PyCoroObject { … };

struct _PyAsyncGenObject { … };

#undef _PyGenObject_HEAD

static inline
PyGenObject *_PyGen_GetGeneratorFromFrame(_PyInterpreterFrame *frame)
{ … }

PyAPI_FUNC(PyObject *)_PyGen_yf(PyGenObject *);
extern void _PyGen_Finalize(PyObject *self);

// Export for '_asyncio' shared extension
PyAPI_FUNC(int) _PyGen_SetStopIterationValue(PyObject *);

// Export for '_asyncio' shared extension
PyAPI_FUNC(int) _PyGen_FetchStopIterationValue(PyObject **);

PyAPI_FUNC(PyObject *)_PyCoro_GetAwaitableIter(PyObject *o);
extern PyObject *_PyAsyncGenValueWrapperNew(PyThreadState *state, PyObject *);

extern PyTypeObject _PyCoroWrapper_Type;
extern PyTypeObject _PyAsyncGenWrappedValue_Type;
extern PyTypeObject _PyAsyncGenAThrow_Type;

#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_GENOBJECT_H */