@abextm/cache2/dist/loaders/Enum.js

Utilities for reading OSRS "caches"

import { PerFileLoadable } from "../Loadable.js";
import { Typed } from "../reflect.js";
export class EnumValueMap extends Map {
    parent;
    constructor(parent) {
        super();
        this.parent = parent;
    }
}
export class Enum extends PerFileLoadable {
    id;
    constructor(id) {
        super();
        this.id = id;
    }
    static index = 2;
    static archive = 8;
    keyTypeChar;
    valueTypeChar;
    defaultValue = undefined;
    map = new EnumValueMap(this);
    get(k) {
        return this.map.get(k) ?? this.defaultValue;
    }
    static decode(reader, id) {
        const v = new Enum(id);
        for (let opcode; (opcode = reader.u8()) != 0;) {
            switch (opcode) {
                case 1:
                    v.keyTypeChar = reader.u8();
                    break;
                case 2:
                    v.valueTypeChar = reader.u8();
                    break;
                case 3:
                    v.defaultValue = reader.string();
                    break;
                case 4:
                    v.defaultValue = reader.i32();
                    break;
                case 5:
                case 6: {
                    let coder = opcode === 5 ? "string" : "i32";
                    let size = reader.u16();
                    for (let i = 0; i < size; i++) {
                        v.map.set(reader.i32(), reader[coder]());
                    }
                    break;
                }
                default:
                    throw new Error(`unknown enum opcode ${opcode}`);
            }
        }
        return v;
    }
}