参数.es6中用于确定调用函数的调用选项

arguments.callee alternative in es6 for determining caller function

本文关键字:调用 函数 选项 es6 用于 参数      更新时间:2023-09-26

在框架中,我正在开发,我已经构建了机制,允许定义私有和受保护的属性和方法。
我在ES5规范中找到的唯一功能就是使用arguments.callee
像这样:

descriptor.method = function () {
    if (__callerIsProptected(arguments.callee.caller.caller, cls))
        return value.apply(this, __defaults(_.values(arguments), defaults));
    throw 'Attempt to call ' + access + ' method "' + cls._name + '::' + name + '"';
};

在严格模式下调用参数。凯丽和争吵。调用者引起异常抛出是否有任何方便的替代方法?

更新添加了整个调用函数代码

    function __descriptor(cls, type, name, descriptor, access) {
    //protected private non-function descriptor.value is replaced by get/set pair
    if (access !== 'public' && type == 'property') {
        delete descriptor.value;
        delete descriptor.writable;
        _.isFunction(descriptor.get) || (descriptor.get = function () {
            return this.__get(name);
        });
        _.isFunction(descriptor.set) || (descriptor.set = function (value) {
            return this.__set(name, value);
        });
    }
    //remove uselesses
    if (_.isFunction(descriptor.get) || _.isFunction(descriptor.set)) {
        delete descriptor.value;
        delete descriptor.writable;
        if (!_.isFunction(descriptor.get)) {
            descriptor.get = function () {
                return this.__get(name);
            };
        }
        if (!_.isFunction(descriptor.set)) {
            descriptor.set = function (value) {
                return this.__set(name, value);
            };
        }
    } else {
        delete descriptor.get;
        delete descriptor.set;
    }
    if (descriptor.get) {
        var getter = descriptor.get;
        //mutate getter and setter if given respectively to access level
        if (access === 'public') {
            descriptor.getter = function () {
                return getter.apply(this, arguments);
            };
        } else if (access === 'protected') {
            descriptor.getter = function () {
                if (__callerIsProptected(arguments.callee.caller.caller, cls))
                    return getter.apply(this, arguments);
                throw 'Attempt to get ' + access + ' property "' + cls._name + '::' + name + '"';
            };
        } else if (access === 'private') {
            descriptor.getter = function () {
                if (__callerIsPrivate(arguments.callee.caller.caller, cls))
                    return getter.apply(this, arguments);
                throw 'Attempt to get ' + access + ' property "' + cls._name + '::' + name + '"';
            };
        }
        descriptor.getter._class = cls;
    }
    if (descriptor.set) {
        var setter = descriptor.set;
        //mutate getter and setter if given respectively to access level
        if (access === 'public') {
            descriptor.setter = function () {
                return setter.apply(this, arguments);
            };
        } else if (access === 'protected') {
            descriptor.setter = function () {
                if (__callerIsProptected(arguments.callee.caller.caller, cls))
                    return setter.apply(this, arguments);
                throw 'Attempt to set ' + access + ' property "' + cls._name + '::' + name + '"';
            };
        } else if (access === 'private') {
            descriptor.setter = function () {
                if (__callerIsPrivate(arguments.callee.caller.caller, cls))
                    return setter.apply(this, arguments);
                throw 'Attempt to set ' + access + ' property "' + cls._name + '::' + name + '"';
            };
        }
        descriptor.setter._class = cls;
    }
    if (descriptor.value !== undefined) {
        if (!_.isFunction(descriptor.value)) return descriptor;
        var value = descriptor.value;
        var defaults = descriptor.defaults || [];
        if (access === 'public' && type == 'method') {
            descriptor.method = function () {
                return value.apply(this, __defaults(_.values(arguments), defaults));
            };
        } else if (access === 'protected') {
            descriptor.method = function () {
                if (__callerIsProptected(arguments.callee.caller.caller, cls))
                    return value.apply(this, __defaults(_.values(arguments), defaults));
                throw 'Attempt to call ' + access + ' method "' + cls._name + '::' + name + '"';
            };
        } else if (access === 'private') {
            descriptor.method = function () {
                if (__callerIsPrivate(arguments.callee.caller.caller, cls))
                    return value.apply(this, __defaults(_.values(arguments), defaults));
                throw 'Attempt to call ' + access + ' method "' + cls._name + '::' + name + '"';
            };
        }
        descriptor.method._class = cls;
    }
    return descriptor;
}

曾经我在开发相同的框架(已放弃),并且在严格模式下找出调用者的唯一方法实际上是抛出异常并从堆栈跟踪中RegExp调用者名称。据我所知,它并不总是精确的。查看呼叫者id脚本

的代码