nanowasm/src/types.c

/*
 * 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/leb128.h>
#include <nw/types.h>
#include <stdio.h>

int varuint1_read(FILE *const f, varuint1 *const out)
{
    unsigned long long value;

    if (leb128_read_unsigned(f, 1, &value))
        return -1;

    *out = value;
    return 0;
}

int varint7_read(FILE *const f, varint7 *const out)
{
    long long value;

    if (leb128_read_signed(f, 7, &value))
        return -1;

    *out = value;
    return 0;
}

int varuint7_read(FILE *const f, varuint7 *const out)
{
    unsigned long long value;

    if (leb128_read_unsigned(f, 7, &value))
        return -1;

    *out = value;
    return 0;
}

int varuint32_read(FILE *const f, varuint32 *out)
{
    unsigned long long value;

    if (leb128_read_unsigned(f, 32, &value))
        return -1;

    *out = value;
    return 0;
}

int varint32_read(FILE *const f, varint32 *const out)
{
    long long value;

    if (leb128_read_signed(f, 32, &value))
        return -1;

    *out = value;
    return 0;
}

int varuint64_read(FILE *const f, varuint64 *const out)
{
    unsigned long long value;

    if (leb128_read_unsigned(f, 64, &value))
        return -1;

    *out = value;
    return 0;
}

int varint64_read(FILE *const f, varint64 *const out)
{
    long long value;

    if (leb128_read_signed(f, 64, &value))
        return -1;

    *out = value;
    return 0;
}