/* ByteArray object interface */

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#ifndef Py_BYTEARRAYOBJECT_H

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#define Py_BYTEARRAYOBJECT_H

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#ifdef __cplusplus

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extern "C" {

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#endif

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#include <stdarg.h>

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/* Type PyByteArrayObject represents a mutable array of bytes.

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* The Python API is that of a sequence;

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* the bytes are mapped to ints in [0, 256).

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* Bytes are not characters; they may be used to encode characters.

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* The only way to go between bytes and str/unicode is via encoding

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* and decoding.

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* For the convenience of C programmers, the bytes type is considered

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* to contain a char pointer, not an unsigned char pointer.

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*/

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/* Object layout */

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#ifndef Py_LIMITED_API

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typedef struct {

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PyObject_VAR_HEAD

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Py_ssize_t ob_alloc; /* How many bytes allocated in ob_bytes */

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char *ob_bytes; /* Physical backing buffer */

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char *ob_start; /* Logical start inside ob_bytes */

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/* XXX(nnorwitz): should ob_exports be Py_ssize_t? */

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int ob_exports; /* How many buffer exports */

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} PyByteArrayObject;

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#endif

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/* Type object */

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PyAPI_DATA(PyTypeObject) PyByteArray_Type;

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PyAPI_DATA(PyTypeObject) PyByteArrayIter_Type;

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/* Type check macros */

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#define PyByteArray_Check(self) PyObject_TypeCheck(self, &PyByteArray_Type)

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#define PyByteArray_CheckExact(self) (Py_TYPE(self) == &PyByteArray_Type)

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/* Direct API functions */

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PyAPI_FUNC(PyObject *) PyByteArray_FromObject(PyObject *);

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PyAPI_FUNC(PyObject *) PyByteArray_Concat(PyObject *, PyObject *);

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PyAPI_FUNC(PyObject *) PyByteArray_FromStringAndSize(const char *, Py_ssize_t);

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PyAPI_FUNC(Py_ssize_t) PyByteArray_Size(PyObject *);

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PyAPI_FUNC(char *) PyByteArray_AsString(PyObject *);

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PyAPI_FUNC(int) PyByteArray_Resize(PyObject *, Py_ssize_t);

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/* Macros, trading safety for speed */

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#ifndef Py_LIMITED_API

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#define PyByteArray_AS_STRING(self) \

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(assert(PyByteArray_Check(self)), \

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Py_SIZE(self) ? ((PyByteArrayObject *)(self))->ob_start : _PyByteArray_empty_string)

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#define PyByteArray_GET_SIZE(self) (assert(PyByteArray_Check(self)), Py_SIZE(self))

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PyAPI_DATA(char) _PyByteArray_empty_string[];

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#endif

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#ifdef __cplusplus

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}

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#endif

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#endif /* !Py_BYTEARRAYOBJECT_H */

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