/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Josef Gajdusek
 * Copyright (c) 2015 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 "py/runtime.h"

mp_obj_t mp_call_function_1_protected(mp_obj_t fun, mp_obj_t arg) {
    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
        mp_obj_t ret = mp_call_function_1(fun, arg);
        nlr_pop();
        return ret;
    } else {
        mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
        return MP_OBJ_NULL;
    }
}

mp_obj_t mp_call_function_2_protected(mp_obj_t fun, mp_obj_t arg1, mp_obj_t arg2) {
    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
        mp_obj_t ret = mp_call_function_2(fun, arg1, arg2);
        nlr_pop();
        return ret;
    } else {
        mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
        return MP_OBJ_NULL;
    }
}

#if !MICROPY_USE_GCC_MUL_OVERFLOW_INTRINSIC
bool mp_mul_ll_overflow(long long int x, long long int y, long long int *res) {
    bool overflow;

    // Check for multiply overflow; see CERT INT32-C
    if (x > 0) { // x is positive
        if (y > 0) { // x and y are positive
            overflow = (x > (LLONG_MAX / y));
        } else { // x positive, y nonpositive
            overflow = (y < (LLONG_MIN / x));
        } // x positive, y nonpositive
    } else { // x is nonpositive
        if (y > 0) { // x is nonpositive, y is positive
            overflow = (x < (LLONG_MIN / y));
        } else { // x and y are nonpositive
            overflow = (x != 0 && y < (LLONG_MAX / x));
        } // End if x and y are nonpositive
    } // End if x is nonpositive

    if (!overflow) {
        *res = x * y;
    }

    return overflow;
}

#define MP_UINT_MAX (~(mp_uint_t)0)
#define MP_INT_MAX ((mp_int_t)(MP_UINT_MAX >> 1))
#define MP_INT_MIN (-MP_INT_MAX - 1)

bool mp_mul_mp_int_t_overflow(mp_int_t x, mp_int_t y, mp_int_t *res) {
    // Check for multiply overflow; see CERT INT32-C
    if (x > 0) { // x is positive
        if (y > 0) { // x and y are positive
            if (x > (MP_INT_MAX / y)) {
                return true;
            }
        } else { // x positive, y nonpositive
            if (y < (MP_INT_MIN / x)) {
                return true;
            }
        } // x positive, y nonpositive
    } else { // x is nonpositive
        if (y > 0) { // x is nonpositive, y is positive
            if (x < (MP_INT_MIN / y)) {
                return true;
            }
        } else { // x and y are nonpositive
            if (x != 0 && y < (MP_INT_MAX / x)) {
                return true;
            }
        } // End if x and y are nonpositive
    } // End if x is nonpositive

    // Result doesn't overflow
    *res = x * y;
    return false;
}
#endif