• file
• revisions
• annotate
• diff
• comparison
• raw

js/src/tests/ecma_6/Generators/delegating-yield-5.js@6474c204b198 (annotated)

js/src/tests/ecma_6/Generators/delegating-yield-5.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	// Test that a deep yield* chain re-yields received results without
michael@0	2	// re-boxing.
michael@0	3
michael@0	4	function results(results) {
michael@0	5	var i = 0;
michael@0	6	function next() {
michael@0	7	return results[i++];
michael@0	8	}
michael@0	9	var iter = { next: next };
michael@0	10	var ret = {};
michael@0	11	ret[std_iterator] = function () { return iter; }
michael@0	12	return ret;
michael@0	13	}
michael@0	14
michael@0	15	function* yield_results(expected, n) {
michael@0	16	return yield* n ? yield_results(expected, n - 1) : results(expected);
michael@0	17	}
michael@0	18
michael@0	19	function collect_results(iterable) {
michael@0	20	var ret = [];
michael@0	21	var result;
michael@0	22	var iter = iterable[std_iterator]();
michael@0	23	do {
michael@0	24	result = iter.next();
michael@0	25	ret.push(result);
michael@0	26	} while (!result.done);
michael@0	27	return ret;
michael@0	28	}
michael@0	29
michael@0	30	// We have to put a full result for the end, because the return will re-box.
michael@0	31	var expected = [{value: 1}, 13, "foo", {value: 34, done: true}];
michael@0	32
michael@0	33	assertDeepEq(expected, collect_results(results(expected)));
michael@0	34	assertDeepEq(expected, collect_results(yield_results(expected, 20)));
michael@0	35
michael@0	36	if (typeof reportCompare == "function")
michael@0	37	reportCompare(true, true);