@bare-ts/lib/dist/codec/u8-array.js

TypeScript library for BARE, a compact and simple binary-serialization format

//! Copyright (c) 2022 Victorien Elvinger
//! Licensed under the MIT License (https://mit-license.org/)
import { check, reserve } from "../core/byte-cursor.js";
import { assert, DEV } from "../util/assert.js";
import { isU32 } from "../util/validator.js";
import { readUintSafe32, writeUintSafe32 } from "./uint.js";
export function readU8Array(bc) {
    return readU8FixedArray(bc, readUintSafe32(bc));
}
export function writeU8Array(bc, x) {
    writeUintSafe32(bc, x.length);
    writeU8FixedArray(bc, x);
}
export function readU8FixedArray(bc, len) {
    return readUnsafeU8FixedArray(bc, len).slice();
}
export function writeU8FixedArray(bc, x) {
    const len = x.length;
    if (len > 0) {
        reserve(bc, len);
        bc.bytes.set(x, bc.offset);
        bc.offset += len;
    }
}
/**
 * Advance `bc` by `len` bytes and return a view of the read bytes.
 *
 * WARNING: The returned array should not be modified.
 */
export function readUnsafeU8FixedArray(bc, len) {
    if (DEV) {
        assert(isU32(len));
    }
    check(bc, len);
    const offset = bc.offset;
    bc.offset += len;
    return bc.bytes.subarray(offset, offset + len);
}