tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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spread-err-mult-err-itr-get-call.js (1578B)


      1 // This file was procedurally generated from the following sources:
      2 // - src/spread/mult-err-itr-get-call.case
      3 // - src/spread/error/array.template
      4 /*---
      5 description: Spread operator following other arguments when GetIterator fails (@@iterator function invocation) (Array initializer)
      6 esid: sec-runtime-semantics-arrayaccumulation
      7 features: [Symbol.iterator]
      8 flags: [generated]
      9 info: |
     10    SpreadElement : ...AssignmentExpression
     11 
     12    1. Let spreadRef be the result of evaluating AssignmentExpression.
     13    2. Let spreadObj be ? GetValue(spreadRef).
     14    3. Let iterator be ? GetIterator(spreadObj).
     15    4. Repeat
     16       a. Let next be ? IteratorStep(iterator).
     17       b. If next is false, return nextIndex.
     18       c. Let nextValue be ? IteratorValue(next).
     19       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
     20          nextValue).
     21       e. Assert: status is true.
     22       f. Let nextIndex be nextIndex + 1.
     23 
     24    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
     25 
     26    ArgumentList : ArgumentList , ... AssignmentExpression
     27 
     28    1. Let precedingArgs be the result of evaluating ArgumentList.
     29    2. Let spreadRef be the result of evaluating AssignmentExpression.
     30    3. Let iterator be GetIterator(GetValue(spreadRef) ).
     31    4. ReturnIfAbrupt(iterator).
     32 
     33    7.4.1 GetIterator ( obj, method )
     34 
     35    [...]
     36    3. Let iterator be Call(method,obj).
     37    4. ReturnIfAbrupt(iterator).
     38 ---*/
     39 var iter = {};
     40 iter[Symbol.iterator] = function() {
     41  throw new Test262Error();
     42 };
     43 
     44 assert.throws(Test262Error, function() {
     45  [0, ...iter];
     46 });
     47 
     48 reportCompare(0, 0);