src/types/get.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

/*
 * nanowasm, a tiny WebAssembly/Wasm interpreter
 * Copyright (C) 2023-2025  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 <nanowasm/nw.h>
#include <nw/types.h>
#include <nw/log.h>

int nwp_get_type(const nw_varint7 type, enum nw_type *const out)
{
    static const struct type
    {
        nw_varint7 key;
        enum nw_type value;
    } list[] =
    {
        {0x7f, NW_TYPE_I32},
        {0x7e, NW_TYPE_I64},
        {0x7d, NW_TYPE_F32},
        {0x7c, NW_TYPE_F64}
    };

    size_t i;

    for (i = 0; i < sizeof list / sizeof *list; i++)
    {
        const struct type *const t = &list[i];

        if (type == t->key)
        {
            *out = t->value;
            return 0;
        }
    }

    return -1;
}