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cpython/Include/cpython/bytearrayobject.h
Victor Stinner 2eca5dad0a
gh-89653: PEP 670: Convert PyBytes macros to functions (#91990)
Convert the following macros to static inline functions:

* PyByteArray_AS_STRING()
* PyByteArray_GET_SIZE()
* PyBytes_AS_STRING()
* PyBytes_GET_SIZE()

Limited C API version 3.11 no longer casts arguments.

Add _PyBytes_CAST() and _PyByteArray_CAST() macros.
2022-05-03 20:14:58 +02:00

39 lines
1.3 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;
}
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
# define PyByteArray_AS_STRING(self) PyByteArray_AS_STRING(_PyObject_CAST(self))
#endif
static inline Py_ssize_t PyByteArray_GET_SIZE(PyObject *op) {
PyByteArrayObject *self = _PyByteArray_CAST(op);
return Py_SIZE(self);
}
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
# define PyByteArray_GET_SIZE(self) PyByteArray_GET_SIZE(_PyObject_CAST(self))
#endif