/* 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 // 23.3.1.1 WeakMap, steps 6-8 function WeakMapConstructorInit(iterable) { var map = this; // Step 6.a. var adder = map.set; // 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 nextItem = next.value; // Step 8.d. if (!IsObject(nextItem)) ThrowTypeError(JSMSG_INVALID_MAP_ITERABLE, "WeakMap"); // Steps 8.e-j. callContentFunction(adder, map, nextItem[0], nextItem[1]); } }