modbtree.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 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.
 */

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>

#include "py/nlr.h"
#include "py/runtime.h"
#include "py/runtime0.h"
#include "py/stream.h"

#if MICROPY_PY_BTREE

#include <db.h>
#include <../../btree/btree.h>

typedef struct _mp_obj_btree_t {
    mp_obj_base_t base;
    DB *db;
    mp_obj_t start_key;
    mp_obj_t end_key;
    #define FLAG_END_KEY_INCL 1
    #define FLAG_DESC 2
    #define FLAG_ITER_TYPE_MASK 0xc0
    #define FLAG_ITER_KEYS   0x40
    #define FLAG_ITER_VALUES 0x80
    #define FLAG_ITER_ITEMS  0xc0
    byte flags;
    byte next_flags;
} mp_obj_btree_t;

STATIC const mp_obj_type_t btree_type;

#define CHECK_ERROR(res) \
        if (res == RET_ERROR) { \
            nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(errno))); \
        }

void __dbpanic(DB *db) {
    printf("__dbpanic(%p)\n", db);
}

STATIC mp_obj_btree_t *btree_new(DB *db) {
    mp_obj_btree_t *o = m_new_obj(mp_obj_btree_t);
    o->base.type = &btree_type;