Esempio n. 1
0
        public static ArgumentsInstance CreateArgumentsObject(Engine engine, FunctionInstance func, string[] names, JsValue[] args, EnvironmentRecord env, bool strict)
        {
            var len = args.Length;
            var obj = new ArgumentsInstance(engine);

            obj.Prototype  = engine.Object.PrototypeObject;
            obj.Extensible = true;
            obj.FastAddProperty("length", len, true, false, true);
            obj.Strict = strict;
            var map         = engine.Object.Construct(Arguments.Empty);
            var mappedNamed = new List <string>();
            var indx        = 0;

            while (indx <= len - 1)
            {
                var indxStr = TypeConverter.ToString(indx);
                var val     = args[indx];
                obj.FastAddProperty(indxStr, val, true, true, true);
                if (indx < names.Length)
                {
                    var name = names[indx];
                    if (!strict && !mappedNamed.Contains(name))
                    {
                        mappedNamed.Add(name);
                        Func <JsValue, JsValue> g = n => env.GetBindingValue(name, false);
                        var p = new Action <JsValue, JsValue>((n, o) => env.SetMutableBinding(name, o, true));

                        map.DefineOwnProperty(indxStr, new ClrAccessDescriptor(engine, g, p)
                        {
                            Configurable = true
                        }, false);
                    }
                }
                indx++;
            }

            // step 12
            if (mappedNamed.Count > 0)
            {
                obj.ParameterMap = map;
            }

            // step 13
            if (!strict)
            {
                obj.FastAddProperty("callee", func, true, false, true);
            }
            // step 14
            else
            {
                var thrower = engine.Function.ThrowTypeError;
                obj.DefineOwnProperty("caller", new PropertyDescriptor(get: thrower, set: thrower, enumerable: false, configurable: false), false);
                obj.DefineOwnProperty("callee", new PropertyDescriptor(get: thrower, set: thrower, enumerable: false, configurable: false), false);
            }

            return(obj);
        }
        public static ArgumentsInstance CreateArgumentsObject(Engine engine, FunctionInstance func, string[] names, JsValue[] args, EnvironmentRecord env, bool strict)
        {
            var len = args.Length;
            var obj = new ArgumentsInstance(engine);
            obj.Prototype = engine.Object.PrototypeObject;
            obj.Extensible = true;
            obj.FastAddProperty("length", len, true, false, true);
            obj.Strict = strict;
            var map = engine.Object.Construct(Arguments.Empty);
            var mappedNamed = new List<string>();
            var indx = 0;
            while (indx <= len - 1)
            {
                var indxStr = TypeConverter.ToString(indx);
                var val = args[indx];
                obj.FastAddProperty(indxStr, val, true, true, true);
                if (indx < names.Length)
                {
                    var name = names[indx];
                    if (!strict && !mappedNamed.Contains(name))
                    {
                        mappedNamed.Add(name);
                        Func<JsValue, JsValue> g = n => env.GetBindingValue(name, false);
                        var p = new Action<JsValue, JsValue>((n, o) => env.SetMutableBinding(name, o, true));

                        map.DefineOwnProperty(indxStr, new ClrAccessDescriptor(engine, g, p) { Configurable = true }, false);
                    }
                }
                indx++;
            }

            // step 12
            if (mappedNamed.Count > 0)
            {
                obj.ParameterMap = map;
            }

            // step 13
            if (!strict)
            {
                obj.FastAddProperty("callee",func, true, false, true);
            }
            // step 14
            else
            {
                var thrower = engine.Function.ThrowTypeError;
                obj.DefineOwnProperty("caller", new PropertyDescriptor(get: thrower, set: thrower, enumerable:false, configurable:false), false);
                obj.DefineOwnProperty("callee", new PropertyDescriptor(get: thrower, set: thrower, enumerable: false, configurable: false), false);
            }

            return obj;
        }