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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972
// 7.3.17 CreateListFromArrayLike (obj [ , elementTypes ] )
function CreateListFromArrayLikeForArgs(obj) {
// Step 1 (not applicable).
// Step 2.
assert(
IsObject(obj),
"object must be passed to CreateListFromArrayLikeForArgs"
);
// Step 3.
var len = ToLength(obj.length);
// This version of CreateListFromArrayLike is only used for argument lists.
if (len > MAX_ARGS_LENGTH) {
ThrowRangeError(JSMSG_TOO_MANY_ARGUMENTS);
}
// Steps 4-6.
var list = std_Array(len);
for (var i = 0; i < len; i++) {
DefineDataProperty(list, i, obj[i]);
}
// Step 7.
return list;
}
// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972
// 26.1.1 Reflect.apply ( target, thisArgument, argumentsList )
function Reflect_apply(target, thisArgument, argumentsList) {
// Step 1.
if (!IsCallable(target)) {
ThrowTypeError(JSMSG_NOT_FUNCTION, DecompileArg(0, target));
}
// Step 2.
if (!IsObject(argumentsList)) {
ThrowTypeError(
JSMSG_OBJECT_REQUIRED_ARG,
"`argumentsList`",
"Reflect.apply",
ToSource(argumentsList)
);
}
// Steps 2-4.
return callFunction(std_Function_apply, target, thisArgument, argumentsList);
}
// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972
// 26.1.2 Reflect.construct ( target, argumentsList [ , newTarget ] )
function Reflect_construct(target, argumentsList /*, newTarget*/) {
// Step 1.
if (!IsConstructor(target)) {
ThrowTypeError(JSMSG_NOT_CONSTRUCTOR, DecompileArg(0, target));
}
// Steps 2-3.
var newTarget;
if (ArgumentsLength() > 2) {
newTarget = GetArgument(2);
if (!IsConstructor(newTarget)) {
ThrowTypeError(JSMSG_NOT_CONSTRUCTOR, DecompileArg(2, newTarget));
}
} else {
newTarget = target;
}
// Step 4.
if (!IsObject(argumentsList)) {
ThrowTypeError(
JSMSG_OBJECT_REQUIRED_ARG,
"`argumentsList`",
"Reflect.construct",
ToSource(argumentsList)
);
}
// Fast path when we can avoid calling CreateListFromArrayLikeForArgs().
var args =
IsPackedArray(argumentsList) && argumentsList.length <= MAX_ARGS_LENGTH
? argumentsList
: CreateListFromArrayLikeForArgs(argumentsList);
// Step 5.
switch (args.length) {
case 0:
return constructContentFunction(target, newTarget);
case 1:
return constructContentFunction(target, newTarget, SPREAD(args, 1));
case 2:
return constructContentFunction(target, newTarget, SPREAD(args, 2));
case 3:
return constructContentFunction(target, newTarget, SPREAD(args, 3));
case 4:
return constructContentFunction(target, newTarget, SPREAD(args, 4));
case 5:
return constructContentFunction(target, newTarget, SPREAD(args, 5));
case 6:
return constructContentFunction(target, newTarget, SPREAD(args, 6));
case 7:
return constructContentFunction(target, newTarget, SPREAD(args, 7));
case 8:
return constructContentFunction(target, newTarget, SPREAD(args, 8));
case 9:
return constructContentFunction(target, newTarget, SPREAD(args, 9));
case 10:
return constructContentFunction(target, newTarget, SPREAD(args, 10));
case 11:
return constructContentFunction(target, newTarget, SPREAD(args, 11));
case 12:
return constructContentFunction(target, newTarget, SPREAD(args, 12));
default:
return ConstructFunction(target, newTarget, args);
}
}
// ES2017 draft rev 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e
// 26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
function Reflect_defineProperty(obj, propertyKey, attributes) {
// Steps 1-4.
return ObjectOrReflectDefineProperty(obj, propertyKey, attributes, false);
}
// ES2017 draft rev 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e
// 26.1.6 Reflect.getOwnPropertyDescriptor ( target, propertyKey )
function Reflect_getOwnPropertyDescriptor(target, propertyKey) {
// Step 1.
if (!IsObject(target)) {
ThrowTypeError(JSMSG_OBJECT_REQUIRED, DecompileArg(0, target));
}
// Steps 2-3.
// The other steps are identical to Object.getOwnPropertyDescriptor().
return ObjectGetOwnPropertyDescriptor(target, propertyKey);
}
// ES2017 draft rev a785b0832b071f505a694e1946182adeab84c972
// 26.1.8 Reflect.has ( target, propertyKey )
function Reflect_has(target, propertyKey) {
// Step 1.
if (!IsObject(target)) {
ThrowTypeError(
JSMSG_OBJECT_REQUIRED_ARG,
"`target`",
"Reflect.has",
ToSource(target)
);
}
// Steps 2-3 are identical to the runtime semantics of the "in" operator.
return propertyKey in target;
}
// ES2018 draft rev 0525bb33861c7f4e9850f8a222c89642947c4b9c
// 26.1.5 Reflect.get ( target, propertyKey [ , receiver ] )
function Reflect_get(target, propertyKey /*, receiver*/) {
// Step 1.
if (!IsObject(target)) {
ThrowTypeError(
JSMSG_OBJECT_REQUIRED_ARG,
"`target`",
"Reflect.get",
ToSource(target)
);
}
// Step 3 (reordered).
if (ArgumentsLength() > 2) {
// Steps 2, 4.
return getPropertySuper(target, propertyKey, GetArgument(2));
}
// Steps 2, 4.
return target[propertyKey];
}
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