yoni-mcscripts-lib/yoni/lib/FunctionParamsOverrides.js

为 Minecraft Script API 中的部分接口创建了 wrapper，并提供简单的事件管理器和任务管理器，另附有一些便于代码编写的一些小工具。

export class FunctionParamsOverrides {
    addOverrides(overrides, func) {
        this.entries.push({ overrides, func });
    }
    entries = [];
    match(params) {
        EntryFilter: for (const entry of this.entries) {
            let paramsCopy = params.slice(0);
            const { overrides, func } = entry;
            let requireArgc = overrides.reduce((argc, over) => argc + over.argc, 0);
            if (params.length !== requireArgc)
                continue;
            for (const over of overrides) {
                const { argc, condition } = over;
                const condParams = paramsCopy.splice(0, argc);
                if (!condition(argc, condParams)) {
                    continue EntryFilter; //not match, next entry
                }
            }
            // matched, generate result
            const result = func(params);
            return {
                hasResult: true,
                result
            };
        }
        // no reault
        return undefined;
    }
}