/* 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 0e10c9f29fca1385980c08a7d5e7bb3eb775e2e4 // 23.4.1.1 WeakSet, steps 6-8 function WeakSetConstructorInit(iterable) { var set = this; // Step 6.a. var adder = set.add; // Step 6.b. if (!IsCallable(adder)) ThrowTypeError(JSMSG_NOT_FUNCTION, typeof adder); // Step 6.c. var iterFn = iterable[std_iterator]; if (!IsCallable(iterFn)) ThrowTypeError(JSMSG_NOT_ITERABLE, DecompileArg(0, iterable)); var iter = callContentFunction(iterFn, iterable); if (!IsObject(iter)) ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof iter); // Step 7 (not applicable). // Step 8. while (true) { // Step 8.a. var next = callContentFunction(iter.next, iter); if (!IsObject(next)) ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof next); // Step 8.b. if (next.done) return; // Step 8.c. var nextValue = next.value; // Steps 8.d-e. callContentFunction(adder, set, nextValue); } } // 23.4.3.1 function WeakSet_add(value) { // Steps 1-3. var S = this; if (!IsObject(S) || !IsWeakSet(S)) return callFunction(CallWeakSetMethodIfWrapped, this, value, "WeakSet_add"); // Step 4.,6. let entries = UnsafeGetReservedSlot(this, WEAKSET_MAP_SLOT); if (!entries) ThrowTypeError(JSMSG_INCOMPATIBLE_PROTO, "WeakSet", "add", typeof S); // Step 5. if (!IsObject(value)) ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, DecompileArg(0, value)); // Steps 7-8. callFunction(std_WeakMap_set, entries, value, true); // Step 8. return S; } // 23.4.3.3 function WeakSet_delete(value) { // Steps 1-3. var S = this; if (!IsObject(S) || !IsWeakSet(S)) return callFunction(CallWeakSetMethodIfWrapped, this, value, "WeakSet_delete"); // Step 4.,6. let entries = UnsafeGetReservedSlot(this, WEAKSET_MAP_SLOT); if (!entries) ThrowTypeError(JSMSG_INCOMPATIBLE_PROTO, "WeakSet", "delete", typeof S); // Step 5. if (!IsObject(value)) return false; // Steps 7-8. return callFunction(std_WeakMap_delete, entries, value); } // 23.4.3.4 function WeakSet_has(value) { // Steps 1-3. var S = this; if (!IsObject(S) || !IsWeakSet(S)) return callFunction(CallWeakSetMethodIfWrapped, this, value, "WeakSet_has"); // Step 4-5. let entries = UnsafeGetReservedSlot(this, WEAKSET_MAP_SLOT); if (!entries) ThrowTypeError(JSMSG_INCOMPATIBLE_PROTO, "WeakSet", "has", typeof S); // Step 6. if (!IsObject(value)) return false; // Steps 7-8. return callFunction(std_WeakMap_has, entries, value); }