| // This file was procedurally generated from the following sources: |
| // - src/async-generators/yield-star-sync-throw.case |
| // - src/async-generators/default/async-class-decl-method.template |
| /*--- |
| description: execution order for yield* with sync iterator and throw() (Async Generator method as a ClassDeclaration element) |
| esid: prod-AsyncGeneratorMethod |
| features: [Symbol.iterator, async-iteration] |
| flags: [generated, async] |
| info: | |
| ClassElement : |
| MethodDefinition |
| |
| MethodDefinition : |
| AsyncGeneratorMethod |
| |
| Async Generator Function Definitions |
| |
| AsyncGeneratorMethod : |
| async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } |
| |
| |
| YieldExpression: yield * AssignmentExpression |
| |
| ... |
| 6. Repeat |
| ... |
| b. Else if received.[[Type]] is throw, then |
| i. Let throw be ? GetMethod(iterator, "throw"). |
| ii. If throw is not undefined, then |
| 1. Let innerResult be ? Call(throw, iterator, « received.[[Value]] »). |
| 2. If generatorKind is async, then set innerResult to |
| ? Await(innerResult). |
| ... |
| 5. Let done be ? IteratorComplete(innerResult). |
| 6. If done is true, then |
| a. Return ? IteratorValue(innerResult). |
| 7. Let received be GeneratorYield(innerResult). |
| ... |
| |
| %AsyncFromSyncIteratorPrototype%.throw ( value ) |
| |
| ... |
| 5. Let throw be GetMethod(syncIterator, "throw"). |
| ... |
| 8. Let throwResult be Call(throw, syncIterator, « value »). |
| ... |
| 11. Let throwValue be IteratorValue(throwResult). |
| ... |
| 13. Let throwDone be IteratorComplete(throwResult). |
| ... |
| 16. Perform ! Call(valueWrapperCapability.[[Resolve]], undefined, |
| « throwValue »). |
| ... |
| 18. Set onFulfilled.[[Done]] to throwDone. |
| 19. Perform ! PerformPromiseThen(valueWrapperCapability.[[Promise]], |
| onFulfilled, undefined, promiseCapability). |
| ... |
| |
| ---*/ |
| var log = []; |
| var obj = { |
| [Symbol.iterator]() { |
| var throwCount = 0; |
| return { |
| name: "syncIterator", |
| get next() { |
| log.push({ name: "get next" }); |
| return function() { |
| return { |
| value: "next-value-1", |
| done: false |
| }; |
| }; |
| }, |
| get throw() { |
| log.push({ |
| name: "get throw", |
| thisValue: this |
| }); |
| return function() { |
| log.push({ |
| name: "call throw", |
| thisValue: this, |
| args: [...arguments] |
| }); |
| |
| throwCount++; |
| if (throwCount == 1) { |
| return { |
| name: "throw-result-1", |
| get value() { |
| log.push({ |
| name: "get throw value (1)", |
| thisValue: this |
| }); |
| return "throw-value-1"; |
| }, |
| get done() { |
| log.push({ |
| name: "get throw done (1)", |
| thisValue: this |
| }); |
| return false; |
| } |
| }; |
| } |
| |
| return { |
| name: "throw-result-2", |
| get value() { |
| log.push({ |
| name: "get throw value (2)", |
| thisValue: this |
| }); |
| return "throw-value-2"; |
| }, |
| get done() { |
| log.push({ |
| name: "get throw done (2)", |
| thisValue: this |
| }); |
| return true; |
| } |
| }; |
| }; |
| } |
| }; |
| } |
| }; |
| |
| |
| |
| var callCount = 0; |
| |
| class C { async *gen() { |
| callCount += 1; |
| log.push({ name: "before yield*" }); |
| var v = yield* obj; |
| log.push({ |
| name: "after yield*", |
| value: v |
| }); |
| return "return-value"; |
| |
| }} |
| |
| var gen = C.prototype.gen; |
| |
| var iter = gen(); |
| |
| assert.sameValue(log.length, 0, "log.length"); |
| |
| iter.next().then(v => { |
| assert.sameValue(log[0].name, "before yield*"); |
| |
| assert.sameValue(log[1].name, "get next"); |
| |
| assert.sameValue(v.value, "next-value-1"); |
| assert.sameValue(v.done, false); |
| |
| assert.sameValue(log.length, 2, "log.length"); |
| |
| iter.throw("throw-arg-1").then(v => { |
| assert.sameValue(log[2].name, "get throw"); |
| assert.sameValue(log[2].thisValue.name, "syncIterator", "get throw thisValue"); |
| |
| assert.sameValue(log[3].name, "call throw"); |
| assert.sameValue(log[3].thisValue.name, "syncIterator", "throw thisValue"); |
| assert.sameValue(log[3].args.length, 1, "throw args.length"); |
| assert.sameValue(log[3].args[0], "throw-arg-1", "throw args[0]"); |
| |
| assert.sameValue(log[4].name, "get throw done (1)"); |
| assert.sameValue(log[4].thisValue.name, "throw-result-1", "get throw done thisValue"); |
| |
| assert.sameValue(log[5].name, "get throw value (1)"); |
| assert.sameValue(log[5].thisValue.name, "throw-result-1", "get throw value thisValue"); |
| |
| assert.sameValue(v.value, "throw-value-1"); |
| assert.sameValue(v.done, false); |
| |
| assert.sameValue(log.length, 6, "log.length"); |
| |
| iter.throw().then(v => { |
| assert.sameValue(log[6].name, "get throw"); |
| assert.sameValue(log[6].thisValue.name, "syncIterator", "get throw thisValue"); |
| |
| assert.sameValue(log[7].name, "call throw"); |
| assert.sameValue(log[7].thisValue.name, "syncIterator", "throw thisValue"); |
| assert.sameValue(log[7].args.length, 1, "throw args.length"); |
| assert.sameValue(log[7].args[0], undefined, "throw args[0]"); |
| |
| assert.sameValue(log[8].name, "get throw done (2)"); |
| assert.sameValue(log[8].thisValue.name, "throw-result-2", "get throw done thisValue"); |
| |
| assert.sameValue(log[9].name, "get throw value (2)"); |
| assert.sameValue(log[9].thisValue.name, "throw-result-2", "get throw value thisValue"); |
| |
| assert.sameValue(log[10].name, "after yield*"); |
| assert.sameValue(log[10].value, "throw-value-2"); |
| |
| assert.sameValue(v.value, "return-value"); |
| assert.sameValue(v.done, true); |
| |
| assert.sameValue(log.length, 11, "log.length"); |
| }).then($DONE, $DONE); |
| }).catch($DONE); |
| }).catch($DONE); |
| |
| assert.sameValue(callCount, 1); |