nativeglue.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Damien P. George
 *
 * 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 <assert.h>

#include "py/runtime.h"
#include "py/smallint.h"
#include "py/emitglue.h"
#include "py/bc.h"

#if MICROPY_DEBUG_VERBOSE // print debugging info
#define DEBUG_printf DEBUG_printf
#else // don't print debugging info
#define DEBUG_printf(...) (void)0
#endif

#if MICROPY_EMIT_NATIVE

int mp_native_type_from_qstr(qstr qst) {
    switch (qst) {
        case MP_QSTR_object: return MP_NATIVE_TYPE_OBJ;
        case MP_QSTR_bool: return MP_NATIVE_TYPE_BOOL;
        case MP_QSTR_int: return MP_NATIVE_TYPE_INT;
        case MP_QSTR_uint: return MP_NATIVE_TYPE_UINT;
        case MP_QSTR_ptr: return MP_NATIVE_TYPE_PTR;
        case MP_QSTR_ptr8: return MP_NATIVE_TYPE_PTR8;
        case MP_QSTR_ptr16: return MP_NATIVE_TYPE_PTR16;
        case MP_QSTR_ptr32: return MP_NATIVE_TYPE_PTR32;
        default: return -1;
    }
}

// convert a MicroPython object to a valid native value based on type
mp_uint_t mp_native_from_obj(mp_obj_t obj, mp_uint_t type) {
    DEBUG_printf("mp_native_from_obj(%p, " UINT_FMT ")\n", obj, type);
    switch (type & 0xf) {
        case MP_NATIVE_TYPE_OBJ: return (mp_uint_t)obj;
        case MP_NATIVE_TYPE_BOOL: return mp_obj_is_true(obj);
        case MP_NATIVE_TYPE_INT:
        case MP_NATIVE_TYPE_UINT: return mp_obj_get_int_truncated(obj);
        default: { // cast obj to a pointer
            mp_buffer_info_t bufinfo;
            if (mp_get_buffer(obj, &bufinfo, MP_BUFFER_READ)) {
                return (mp_uint_t)bufinfo.buf;
            } else {