8154d977e4
In one corner case, we incorrectly returned a value without first wrapping it in an iterator result object. R=littledan@chromium.org BUG=v8:5057 Review-Url: https://codereview.chromium.org/2034653002 Cr-Commit-Position: refs/heads/master@{#36676}
1373 lines
24 KiB
JavaScript
1373 lines
24 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --harmony-iterator-close
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function* g() { yield 42; return 88 };
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// Return method is "undefined".
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{
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g.prototype.return = null;
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assertEquals(undefined, (() => {
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for (var x of g()) { break; }
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})());
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assertEquals(undefined, (() => {
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for (let x of g()) { break; }
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})());
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assertEquals(undefined, (() => {
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for (const x of g()) { break; }
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})());
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assertEquals(undefined, (() => {
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for (x of g()) { break; }
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})());
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assertThrowsEquals(() => {
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for (var x of g()) { throw 42; }
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}, 42);
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assertThrowsEquals(() => {
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for (let x of g()) { throw 42; }
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}, 42);
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assertThrowsEquals(() => {
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for (const x of g()) { throw 42; }
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}, 42);
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assertThrowsEquals(() => {
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for (x of g()) { throw 42; }
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}, 42);
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assertEquals(42, (() => {
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for (var x of g()) { return 42; }
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})());
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assertEquals(42, (() => {
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for (let x of g()) { return 42; }
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})());
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assertEquals(42, (() => {
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for (const x of g()) { return 42; }
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})());
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assertEquals(42, (() => {
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for (x of g()) { return 42; }
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})());
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assertEquals(42, eval('for (var x of g()) { x; }'));
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assertEquals(42, eval('for (let x of g()) { x; }'));
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assertEquals(42, eval('for (const x of g()) { x; }'));
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assertEquals(42, eval('for (x of g()) { x; }'));
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assertEquals(42, (() => {
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var [x] = g(); return x;
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})());
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assertEquals(42, (() => {
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let [x] = g(); return x;
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})());
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assertEquals(42, (() => {
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const [x] = g(); return x;
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})());
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assertEquals(42, (() => {
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[x] = g(); return x;
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})());
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assertEquals(42,
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(([x]) => x)(g())
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);
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}
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// Return method is not callable.
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{
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g.prototype.return = 666;
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assertThrows(() => {
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for (var x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (let x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (const x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (var x of g()) { throw 666; }
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}, TypeError);
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assertThrows(() => {
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for (let x of g()) { throw 666; }
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}, TypeError);
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assertThrows(() => {
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for (const x of g()) { throw 666; }
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}, TypeError);
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assertThrows(() => {
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for (x of g()) { throw 666; }
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}, TypeError);
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assertThrows(() => {
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for (var x of g()) { return 666; }
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}, TypeError);
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assertThrows(() => {
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for (let x of g()) { return 666; }
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}, TypeError);
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assertThrows(() => {
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for (const x of g()) { return 666; }
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}, TypeError);
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assertThrows(() => {
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for (x of g()) { return 666; }
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}, TypeError);
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assertEquals(42, eval('for (var x of g()) { x; }'));
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assertEquals(42, eval('for (let x of g()) { x; }'));
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assertEquals(42, eval('for (const x of g()) { x; }'));
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assertEquals(42, eval('for (x of g()) { x; }'));
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assertThrows(() => {
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var [x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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let [x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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const [x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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[x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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(([x]) => x)(g());
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}, TypeError);
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}
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// Return method does not return an object.
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{
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g.prototype.return = () => 666;
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assertThrows(() => {
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for (var x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (let x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (const x of g()) { break; }
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}, TypeError);
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assertThrows(() => {
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for (x of g()) { break; }
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}, TypeError);
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// Throw from the body of a for loop 'wins' vs throw
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// originating from a bad 'return' value.
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assertThrowsEquals(() => {
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for (var x of g()) { throw 666; }
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}, 666);
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assertThrowsEquals(() => {
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for (let x of g()) { throw 666; }
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}, 666);
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assertThrowsEquals(() => {
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for (const x of g()) { throw 666; }
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}, 666);
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assertThrowsEquals(() => {
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for (x of g()) { throw 666; }
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}, 666);
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assertThrows(() => {
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for (var x of g()) { return 666; }
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}, TypeError);
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assertThrows(() => {
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for (let x of g()) { return 666; }
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}, TypeError);
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assertThrows(() => {
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for (const x of g()) { return 666; }
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}, TypeError);
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assertThrows(() => {
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for (x of g()) { return 666; }
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}, TypeError);
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assertEquals(42, eval('for (var x of g()) { x; }'));
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assertEquals(42, eval('for (let x of g()) { x; }'));
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assertEquals(42, eval('for (const x of g()) { x; }'));
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assertEquals(42, eval('for (x of g()) { x; }'));
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assertThrows(() => {
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var [x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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let [x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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const [x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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[x] = g(); return x;
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}, TypeError);
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assertThrows(() => {
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(([x]) => x)(g());
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}, TypeError);
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}
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// Return method returns an object.
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{
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let log = [];
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g.prototype.return = (...args) => { log.push(args); return {} };
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log = [];
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for (var x of g()) { break; }
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assertEquals([[]], log);
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log = [];
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for (let x of g()) { break; }
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assertEquals([[]], log);
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log = [];
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for (const x of g()) { break; }
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assertEquals([[]], log);
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log = [];
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for (x of g()) { break; }
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assertEquals([[]], log);
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log = [];
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assertThrowsEquals(() => {
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for (var x of g()) { throw 42; }
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}, 42);
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assertEquals([[]], log);
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log = [];
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assertThrowsEquals(() => {
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for (let x of g()) { throw 42; }
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}, 42);
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assertEquals([[]], log);
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log = [];
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assertThrowsEquals(() => {
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for (const x of g()) { throw 42; }
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}, 42);
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assertEquals([[]], log);
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log = [];
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assertThrowsEquals(() => {
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for (x of g()) { throw 42; }
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}, 42);
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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for (var x of g()) { return 42; }
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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for (let x of g()) { return 42; }
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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for (const x of g()) { return 42; }
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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for (x of g()) { return 42; }
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, eval('for (var x of g()) { x; }'));
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assertEquals([], log);
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log = [];
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assertEquals(42, eval('for (let x of g()) { x; }'));
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assertEquals([], log);
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log = [];
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assertEquals(42, eval('for (const x of g()) { x; }'));
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assertEquals([], log);
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log = [];
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assertEquals(42, eval('for (x of g()) { x; }'));
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assertEquals([], log);
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// Even if doing the assignment throws, still call return
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log = [];
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x = { set attr(_) { throw 1234; } };
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assertThrowsEquals(() => {
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for (x.attr of g()) { throw 456; }
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}, 1234);
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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var [x] = g(); return x;
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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let [x] = g(); return x;
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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const [x] = g(); return x;
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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[x] = g(); return x;
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})());
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assertEquals([[]], log);
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log = []
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assertEquals(42,
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(([x]) => x)(g())
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);
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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var [x,] = g(); return x;
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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let [x,] = g(); return x;
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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const [x,] = g(); return x;
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})());
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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[x,] = g(); return x;
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})());
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assertEquals([[]], log);
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log = []
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assertEquals(42,
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(([x,]) => x)(g())
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);
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assertEquals([[]], log);
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log = [];
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assertEquals(42, (() => {
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var [x,,] = g(); return x;
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})());
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assertEquals([], log);
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log = [];
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assertEquals(42, (() => {
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let [x,,] = g(); return x;
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})());
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assertEquals([], log);
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log = [];
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assertEquals(42, (() => {
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const [x,,] = g(); return x;
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})());
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assertEquals([], log);
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log = [];
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assertEquals(42, (() => {
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[x,,] = g(); return x;
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})());
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assertEquals([], log);
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log = []
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assertEquals(42,
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(([x,,]) => x)(g())
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);
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assertEquals([], log);
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log = [];
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assertEquals([42, undefined], (() => {
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var [x, y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42, undefined], (() => {
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let [x, y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42, undefined], (() => {
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const [x, y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42, undefined], (() => {
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[x, y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = []
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assertEquals([42, undefined],
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(([x, y]) => [x, y])(g())
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);
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assertEquals([], log);
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log = [];
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assertEquals([42], (() => {
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var [...x] = g(); return x;
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42], (() => {
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let [...x] = g(); return x;
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42], (() => {
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const [...x] = g(); return x;
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42], (() => {
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[...x] = g(); return x;
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})());
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assertEquals([], log);
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log = []
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assertEquals([42],
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(([...x]) => x)(g())
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);
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assertEquals([], log);
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log = [];
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assertEquals([42, []], (() => {
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var [x, ...y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42, []], (() => {
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let [x, ...y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42, []], (() => {
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const [x, ...y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = [];
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assertEquals([42, []], (() => {
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[x, ...y] = g(); return [x, y];
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})());
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assertEquals([], log);
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log = []
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assertEquals([42, []],
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(([x, ...y]) => [x, y])(g())
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);
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|
assertEquals([], log);
|
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|
|
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|
log = [];
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assertEquals([], (() => {
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var [] = g(); return [];
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})());
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|
assertEquals([[]], log);
|
|
|
|
log = [];
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assertEquals([], (() => {
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let [] = g(); return [];
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})());
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assertEquals([[]], log);
|
|
|
|
log = [];
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assertEquals([], (() => {
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const [] = g(); return [];
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})());
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assertEquals([[]], log);
|
|
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|
log = [];
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assertEquals([], (() => {
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[] = g(); return [];
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})());
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assertEquals([[]], log);
|
|
|
|
log = []
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assertEquals([],
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(([]) => [])(g())
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);
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|
assertEquals([[]], log);
|
|
|
|
|
|
log = [];
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|
assertEquals([], (() => {
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var [...[]] = g(); return [];
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})());
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|
assertEquals([], log);
|
|
|
|
log = [];
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|
assertEquals([], (() => {
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|
let [...[]] = g(); return [];
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|
})());
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|
assertEquals([], log);
|
|
|
|
log = [];
|
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assertEquals([], (() => {
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|
const [...[]] = g(); return [];
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|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([], (() => {
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[...[]] = g(); return [];
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})());
|
|
assertEquals([], log);
|
|
|
|
log = []
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assertEquals([],
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|
(([...[]]) => [])(g())
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);
|
|
assertEquals([], log);
|
|
|
|
|
|
log = [];
|
|
assertEquals([42], (() => {
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|
var [...[x]] = g(); return [x];
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|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([42], (() => {
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|
let [...[x]] = g(); return [x];
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|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([42], (() => {
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|
const [...[x]] = g(); return [x];
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|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([42], (() => {
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|
[...[x]] = g(); return [x];
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|
})());
|
|
assertEquals([], log);
|
|
|
|
log = []
|
|
assertEquals([42],
|
|
(([...[x]]) => [x])(g())
|
|
);
|
|
assertEquals([], log);
|
|
|
|
|
|
log = [];
|
|
assertEquals([42, undefined], (() => {
|
|
var [...[x, y]] = g(); return [x, y];
|
|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([42, undefined], (() => {
|
|
let [...[x, y]] = g(); return [x, y];
|
|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([42, undefined], (() => {
|
|
const [...[x, y]] = g(); return [x, y];
|
|
})());
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals([42, undefined], (() => {
|
|
[...[x, y]] = g(); return [x, y];
|
|
})());
|
|
assertEquals([], log);
|
|
|
|
log = []
|
|
assertEquals([42, undefined],
|
|
(([...[x, y]]) => [x, y])(g())
|
|
);
|
|
assertEquals([], log);
|
|
|
|
|
|
log = []
|
|
assertThrowsEquals(() => {
|
|
let x = { set foo(_) { throw 666; } };
|
|
[x.foo] = g();
|
|
}, 666);
|
|
assertEquals([[]], log);
|
|
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
var [[]] = g();
|
|
}, TypeError);
|
|
assertEquals([[]], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
let [[]] = g();
|
|
}, TypeError);
|
|
assertEquals([[]], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
const [[]] = g();
|
|
}, TypeError);
|
|
assertEquals([[]], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
[[]] = g();
|
|
}, TypeError);
|
|
assertEquals([[]], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
(([[]]) => 0)(g());
|
|
}, TypeError);
|
|
assertEquals([[]], log);
|
|
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
var [...[[]]] = g();
|
|
}, TypeError);
|
|
assertEquals([], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
let [...[[]]] = g();
|
|
}, TypeError);
|
|
assertEquals([], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
const [...[[]]] = g();
|
|
}, TypeError);
|
|
assertEquals([], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
[...[[]]] = g();
|
|
}, TypeError);
|
|
assertEquals([], log);
|
|
|
|
log = []
|
|
assertThrows(() => {
|
|
(([...[[]]]) => 0)(g());
|
|
}, TypeError);
|
|
assertEquals([], log);
|
|
|
|
|
|
{
|
|
let backup = Array.prototype[Symbol.iterator];
|
|
Array.prototype[Symbol.iterator] = () => g();
|
|
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
var [x, ...[y]] = [1, 2, 3]
|
|
});
|
|
assertEquals(log, [[]]);
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
let [x, ...[y]] = [1, 2, 3];
|
|
});
|
|
assertEquals(log, [[]]);
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
const [x, ...[y]] = [1, 2, 3];
|
|
});
|
|
assertEquals(log, [[]]);
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
(([x, ...[y]]) => {})([1, 2, 3]);
|
|
});
|
|
assertEquals(log, [[]]);
|
|
|
|
|
|
log = [];
|
|
assertThrows(() => {
|
|
var [x, ...[[]]] = [1, 2, 3];
|
|
}, TypeError);
|
|
assertEquals(log, [[]]);
|
|
|
|
log = [];
|
|
assertThrows(() => {
|
|
let [x, ...[[]]] = [1, 2, 3];
|
|
}, TypeError);
|
|
assertEquals(log, [[]]);
|
|
|
|
log = [];
|
|
assertThrows(() => {
|
|
const [x, ...[[]]] = [1, 2, 3];
|
|
}, TypeError);
|
|
assertEquals(log, [[]]);
|
|
|
|
log = [];
|
|
assertThrows(() => {
|
|
(([x, ...[[]]]) => {})([1, 2, 3]);
|
|
}, TypeError);
|
|
assertEquals(log, [[]]);
|
|
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
var [x, ...[...y]] = [1, 2, 3];
|
|
});
|
|
assertEquals(log, []);
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
let [x, ...[...y]] = [1, 2, 3];
|
|
});
|
|
assertEquals(log, []);
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
const [x, ...[...y]] = [1, 2, 3];
|
|
});
|
|
assertEquals(log, []);
|
|
|
|
log = [];
|
|
assertDoesNotThrow(() => {
|
|
(([x, ...[...y]]) => {})([1, 2, 3]);
|
|
});
|
|
assertEquals(log, []);
|
|
|
|
|
|
Array.prototype[Symbol.iterator] = backup;
|
|
}
|
|
}
|
|
|
|
|
|
// Return method throws.
|
|
{
|
|
let log = [];
|
|
g.prototype.return = (...args) => { log.push(args); throw 23 };
|
|
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (var x of g()) { break; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) { break; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (const x of g()) { break; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (x of g()) { break; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (var x of g()) { throw 42; }
|
|
}, 42);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) { throw 42; }
|
|
}, 42);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (const x of g()) { throw 42; }
|
|
}, 42);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (x of g()) { throw 42; }
|
|
}, 42);
|
|
assertEquals([[]], log);
|
|
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (var x of g()) { return 42; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) { return 42; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (const x of g()) { return 42; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (x of g()) { return 42; }
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
|
|
log = [];
|
|
assertEquals(42, eval('for (var x of g()) { x; }'));
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals(42, eval('for (let x of g()) { x; }'));
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals(42, eval('for (const x of g()) { x; }'));
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertEquals(42, eval('for (x of g()) { x; }'));
|
|
assertEquals([], log);
|
|
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
var [x] = g(); return x;
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
let [x] = g(); return x;
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
const [x] = g(); return x;
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
[x] = g(); return x;
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
(([x]) => x)(g())
|
|
}, 23);
|
|
assertEquals([[]], log);
|
|
}
|
|
|
|
|
|
// Next method throws.
|
|
{
|
|
g.prototype.next = () => { throw 666; };
|
|
g.prototype.return = () => { assertUnreachable() };
|
|
|
|
|
|
assertThrowsEquals(() => {
|
|
for (var x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (const x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
var [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
let [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
const [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
[x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
(([x]) => x)(g());
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
var [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
let [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
const [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
[...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
(([...x]) => x)(g());
|
|
}, 666);
|
|
}
|
|
|
|
|
|
// Value throws.
|
|
{
|
|
g.prototype.next = () => ({get value() {throw 666}});
|
|
g.prototype.return = () => { assertUnreachable() };
|
|
|
|
|
|
assertThrowsEquals(() => {
|
|
for (var x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (const x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
var [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
let [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
const [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
[x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
(([x]) => x)(g());
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
var [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
let [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
const [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
[...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
(([...x]) => x)(g());
|
|
}, 666);
|
|
}
|
|
|
|
|
|
// Done throws.
|
|
{
|
|
g.prototype.next = () => ({get done() {throw 666}});
|
|
g.prototype.return = () => { assertUnreachable() };
|
|
|
|
|
|
assertThrowsEquals(() => {
|
|
for (var x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (const x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (x of g()) {}
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
var [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
let [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
const [x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
[x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
(([x]) => x)(g());
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
var [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
let [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
const [...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
[...x] = g();
|
|
}, 666);
|
|
|
|
assertThrowsEquals(() => {
|
|
(([...x]) => x)(g());
|
|
}, 666);
|
|
}
|
|
|
|
|
|
// Nested loops.
|
|
{
|
|
function* g1() { yield 1; yield 2; throw 3; }
|
|
function* g2() { yield -1; yield -2; throw -3; }
|
|
|
|
assertDoesNotThrow(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) break;
|
|
}
|
|
if (x == 2) break;
|
|
}
|
|
}, -3);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
}
|
|
}
|
|
}, -3);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) break;
|
|
}
|
|
}
|
|
}, 3);
|
|
|
|
assertDoesNotThrow(() => {
|
|
l: for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) break l;
|
|
}
|
|
}
|
|
});
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
throw 4;
|
|
}
|
|
}
|
|
}, 4);
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) throw 4;
|
|
}
|
|
}
|
|
}, 4);
|
|
|
|
let log = [];
|
|
g1.prototype.return = () => { log.push(1); throw 5 };
|
|
g2.prototype.return = () => { log.push(2); throw -5 };
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) break;
|
|
}
|
|
if (x == 2) break;
|
|
}
|
|
}, -5);
|
|
assertEquals([2, 1], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
}
|
|
}
|
|
}, -3);
|
|
assertEquals([1], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) break;
|
|
}
|
|
}
|
|
}, -5);
|
|
assertEquals([2, 1], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
l: for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) break l;
|
|
}
|
|
}
|
|
}, -5);
|
|
assertEquals([2, 1], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
throw 4;
|
|
}
|
|
}
|
|
}, 4);
|
|
assertEquals([2, 1], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
for (let y of g2()) {
|
|
if (y == -2) throw 4;
|
|
}
|
|
}
|
|
}, 4);
|
|
assertEquals([2, 1], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
try {
|
|
for (let y of g2()) {
|
|
}
|
|
} catch (_) {}
|
|
}
|
|
}, 3);
|
|
assertEquals([], log);
|
|
|
|
log = [];
|
|
assertThrowsEquals(() => {
|
|
for (let x of g1()) {
|
|
try {
|
|
for (let y of g2()) {
|
|
}
|
|
} catch (_) {}
|
|
if (x == 2) break;
|
|
}
|
|
}, 5);
|
|
assertEquals([1], log);
|
|
}
|
|
|
|
|
|
// yield*, argument's return method is "undefined".
|
|
function TestYieldStarWithoutReturn(get_iterable) {
|
|
assertTrue(get_iterable().return == undefined);
|
|
|
|
function* g() { yield* get_iterable() }
|
|
|
|
{
|
|
let gen = g();
|
|
assertEquals({value: 1, done: false}, gen.next());
|
|
assertEquals({value: undefined, done: true}, gen.return());
|
|
}
|
|
|
|
assertEquals(42, (() => {
|
|
for (let x of g()) break;
|
|
return 42;
|
|
})());
|
|
|
|
assertEquals(42, (() => {
|
|
for (let x of g()) return 42;
|
|
})());
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) throw 42;
|
|
}, 42);
|
|
}
|
|
{
|
|
let get_iterable1 = () => [1, 2];
|
|
let get_iterable2 = function*() { yield 1; yield 2 };
|
|
get_iterable2.prototype.return = null;
|
|
TestYieldStarWithoutReturn(get_iterable1);
|
|
TestYieldStarWithoutReturn(get_iterable2);
|
|
}
|
|
|
|
|
|
// yield*, argument's return method is defined.
|
|
{
|
|
let get_iterable = function*() { yield 1; yield 2 };
|
|
const obj = {};
|
|
get_iterable.prototype.return = (...args) => obj;
|
|
|
|
function* g() { yield* get_iterable() }
|
|
|
|
{
|
|
let gen = g();
|
|
assertEquals({value: 1, done: false}, gen.next());
|
|
assertSame(obj, gen.return());
|
|
assertSame(obj, gen.return());
|
|
assertSame(obj, gen.return());
|
|
assertEquals({value: 2, done: false}, gen.next());
|
|
assertSame(obj, gen.return());
|
|
assertSame(obj, gen.return());
|
|
assertSame(obj, gen.return());
|
|
assertEquals({value: undefined, done: true}, gen.next());
|
|
assertEquals({value: undefined, done: true}, gen.return());
|
|
assertEquals({value: undefined, done: true}, gen.return());
|
|
}
|
|
|
|
assertEquals(42, (() => {
|
|
for (let x of g()) break;
|
|
return 42;
|
|
})());
|
|
|
|
assertEquals(42, (() => {
|
|
for (let x of g()) return 42;
|
|
})());
|
|
|
|
assertThrowsEquals(() => {
|
|
for (let x of g()) throw 42;
|
|
}, 42);
|
|
}
|