cpython/Include/cpython/bytearrayobject.h
Victor Stinner df22eec421
gh-89653: PEP 670: Macros always cast arguments in cpython/ (#93766)
Header files in the Include/cpython/ are only included if
the Py_LIMITED_API macro is not defined.
2022-06-13 20:09:40 +02:00

34 lines
1.1 KiB
C

#ifndef Py_CPYTHON_BYTEARRAYOBJECT_H
# error "this header file must not be included directly"
#endif
/* Object layout */
typedef struct {
PyObject_VAR_HEAD
Py_ssize_t ob_alloc; /* How many bytes allocated in ob_bytes */
char *ob_bytes; /* Physical backing buffer */
char *ob_start; /* Logical start inside ob_bytes */
Py_ssize_t ob_exports; /* How many buffer exports */
} PyByteArrayObject;
PyAPI_DATA(char) _PyByteArray_empty_string[];
/* Macros and static inline functions, trading safety for speed */
#define _PyByteArray_CAST(op) \
(assert(PyByteArray_Check(op)), _Py_CAST(PyByteArrayObject*, op))
static inline char* PyByteArray_AS_STRING(PyObject *op)
{
PyByteArrayObject *self = _PyByteArray_CAST(op);
if (Py_SIZE(self)) {
return self->ob_start;
}
return _PyByteArray_empty_string;
}
#define PyByteArray_AS_STRING(self) PyByteArray_AS_STRING(_PyObject_CAST(self))
static inline Py_ssize_t PyByteArray_GET_SIZE(PyObject *op) {
PyByteArrayObject *self = _PyByteArray_CAST(op);
return Py_SIZE(self);
}
#define PyByteArray_GET_SIZE(self) PyByteArray_GET_SIZE(_PyObject_CAST(self))