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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
* Copyright (c) 2014 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_PY_OBJARRAY_H
#define MICROPY_INCLUDED_PY_OBJARRAY_H
#include "py/obj.h"
// Used only for memoryview types, set in "typecode" to indicate a writable memoryview
#define MP_OBJ_ARRAY_TYPECODE_FLAG_RW (0x80)
// This structure is used for all of bytearray, array.array, memoryview
// objects. Note that memoryview has different meaning for some fields,
// see comment at the beginning of objarray.c.
typedef struct _mp_obj_array_t {
mp_obj_base_t base;
size_t typecode : 8;
// free is number of unused elements after len used elements
// alloc size = len + free
// But for memoryview, 'free' is reused as offset (in elements) into the
// parent object. (Union is not used to not go into a complication of
// union-of-bitfields with different toolchains). See comments in
// objarray.c.
size_t free : (8 * sizeof(size_t) - 8);
size_t len; // in elements
void *items;
} mp_obj_array_t;
#if MICROPY_PY_BUILTINS_MEMORYVIEW
static inline void mp_obj_memoryview_init(mp_obj_array_t *self, size_t typecode, size_t offset, size_t len, void *items) {
self->base.type = &mp_type_memoryview;
self->typecode = typecode;
self->free = offset;
self->len = len;
self->items = items;
}
#endif
#endif // MICROPY_INCLUDED_PY_OBJARRAY_H
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