/*
 * nanowasm, a tiny WebAssembly/Wasm interpreter
 * Copyright (C) 2023-2024  Xavier Del Campo Romero
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#include <nw/log.h>
#include <nw/ops.h>
#include <nanowasm/nw.h>
#include <nw/types.h>
#include <stddef.h>
#include <stdio.h>

static int op(struct nw_interp *const i, FILE *const f)
{
    varuint1 reserved;

    if (varuint1_read(f, &reserved))
    {
        LOG("%s: varuint1_read failed\n", __func__);
        return 1;
    }
    else if (reserved)
    {
        LOG("%s: unexpected non-zero reserved value %u\n",
            __func__, (unsigned)reserved);
        return 1;
    }

    return 0;
}

int op_current_memory(struct nw_interp *const i)
{
    return op(i, i->f);
}

int check_current_memory(FILE *const f)
{
    return op(NULL, f);
}