| // This file was procedurally generated from the following sources: |
| // - src/spread/sngl-err-itr-value.case |
| // - src/spread/error/call-expr.template |
| /*--- |
| description: Spread operator applied to the only argument when IteratorValue fails (CallExpression) |
| esid: sec-function-calls-runtime-semantics-evaluation |
| features: [Symbol.iterator] |
| flags: [generated] |
| info: | |
| CallExpression : MemberExpression Arguments |
| |
| [...] |
| 9. Return EvaluateDirectCall(func, thisValue, Arguments, tailCall). |
| |
| 12.3.4.3 Runtime Semantics: EvaluateDirectCall |
| |
| 1. Let argList be ArgumentListEvaluation(arguments). |
| [...] |
| 6. Let result be Call(func, thisValue, argList). |
| [...] |
| |
| 12.3.6.1 Runtime Semantics: ArgumentListEvaluation |
| |
| ArgumentList : ... AssignmentExpression |
| |
| 1. Let list be an empty List. |
| 2. Let spreadRef be the result of evaluating AssignmentExpression. |
| 3. Let spreadObj be GetValue(spreadRef). |
| 4. Let iterator be GetIterator(spreadObj). |
| 5. ReturnIfAbrupt(iterator). |
| 6. Repeat |
| a. Let next be IteratorStep(iterator). |
| b. ReturnIfAbrupt(next). |
| c. If next is false, return list. |
| d. Let nextArg be IteratorValue(next). |
| e. ReturnIfAbrupt(nextArg). |
| |
| 7.4.4 IteratorValue ( iterResult ) |
| |
| 1. Assert: Type(iterResult) is Object. |
| 2. Return Get(iterResult, "value"). |
| |
| 7.3.1 Get (O, P) |
| |
| [...] |
| 3. Return O.[[Get]](P, O). |
| ---*/ |
| var iter = {}; |
| var poisonedValue = Object.defineProperty({}, 'value', { |
| get: function() { |
| throw new Test262Error(); |
| } |
| }); |
| iter[Symbol.iterator] = function() { |
| return { |
| next: function() { |
| return poisonedValue; |
| } |
| }; |
| }; |
| |
| assert.throws(Test262Error, function() { |
| (function() {}(...iter)); |
| }); |