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1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Flags: --ignition-generators --harmony-do-expressions | 5 // Flags: --ignition-generators --harmony-do-expressions |
6 // Flags: --allow-natives-syntax | 6 // Flags: --allow-natives-syntax |
7 | 7 |
8 | 8 |
9 function MaybeOptimizeOrDeoptimize(f) { | 9 function MaybeOptimizeOrDeoptimize(f) { |
10 let x = Math.random(); // --random-seed makes this deterministic | 10 let x = Math.random(); // --random-seed makes this deterministic |
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641 | 641 |
642 { | 642 { |
643 let foo = function*() { | 643 let foo = function*() { |
644 yield* (function*() { yield 42; }()); | 644 yield* (function*() { yield 42; }()); |
645 assertUnreachable(); | 645 assertUnreachable(); |
646 } | 646 } |
647 g = foo(); | 647 g = foo(); |
648 assertEquals({value: 42, done: false}, Next(g)); | 648 assertEquals({value: 42, done: false}, Next(g)); |
649 assertEquals({value: 23, done: true}, Return(g, 23)); | 649 assertEquals({value: 23, done: true}, Return(g, 23)); |
650 } | 650 } |
| 651 |
| 652 { |
| 653 let iterable = { |
| 654 [Symbol.iterator]() { |
| 655 return { next() { return {} } }; |
| 656 } |
| 657 }; |
| 658 let foo = function*() { yield* iterable }; |
| 659 g = foo(); |
| 660 g.next(); |
| 661 assertThrows(() => Throw(g), TypeError); |
| 662 } |
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