84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// ES2017 draft rev 0e10c9f29fca1385980c08a7d5e7bb3eb775e2e4
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// 23.4.1.1 WeakSet, steps 6-8
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function WeakSetConstructorInit(iterable) {
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var set = this;
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// Step 6.a.
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var adder = set.add;
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// Step 6.b.
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if (!IsCallable(adder))
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ThrowTypeError(JSMSG_NOT_FUNCTION, typeof adder);
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// Steps 6.c-8.
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for (var nextValue of allowContentIter(iterable))
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callContentFunction(adder, set, nextValue);
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}
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// 23.4.3.1
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function WeakSet_add(value) {
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// Steps 1-3.
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var S = this;
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if (!IsObject(S) || !IsWeakSet(S))
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return callFunction(CallWeakSetMethodIfWrapped, this, value, "WeakSet_add");
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// Step 4.,6.
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let entries = UnsafeGetReservedSlot(this, WEAKSET_MAP_SLOT);
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if (!entries)
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ThrowTypeError(JSMSG_INCOMPATIBLE_PROTO, "WeakSet", "add", typeof S);
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// Step 5.
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if (!IsObject(value))
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ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, DecompileArg(0, value));
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// Steps 7-8.
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callFunction(std_WeakMap_set, entries, value, true);
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// Step 8.
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return S;
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}
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// 23.4.3.3
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function WeakSet_delete(value) {
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// Steps 1-3.
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var S = this;
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if (!IsObject(S) || !IsWeakSet(S))
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return callFunction(CallWeakSetMethodIfWrapped, this, value, "WeakSet_delete");
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// Step 4.,6.
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let entries = UnsafeGetReservedSlot(this, WEAKSET_MAP_SLOT);
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if (!entries)
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ThrowTypeError(JSMSG_INCOMPATIBLE_PROTO, "WeakSet", "delete", typeof S);
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// Step 5.
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if (!IsObject(value))
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return false;
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// Steps 7-8.
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return callFunction(std_WeakMap_delete, entries, value);
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}
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// 23.4.3.4
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function WeakSet_has(value) {
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// Steps 1-3.
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var S = this;
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if (!IsObject(S) || !IsWeakSet(S))
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return callFunction(CallWeakSetMethodIfWrapped, this, value, "WeakSet_has");
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// Step 4-5.
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let entries = UnsafeGetReservedSlot(this, WEAKSET_MAP_SLOT);
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if (!entries)
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ThrowTypeError(JSMSG_INCOMPATIBLE_PROTO, "WeakSet", "has", typeof S);
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// Step 6.
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if (!IsObject(value))
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return false;
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// Steps 7-8.
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return callFunction(std_WeakMap_has, entries, value);
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}
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