tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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var-ary-ptrn-rest-id-iter-step-err.js (2082B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
      3 // - src/dstr-binding/error/for-var.template
      4 /*---
      5 description: Error forwarding when IteratorStep returns an abrupt completion (for statement)
      6 esid: sec-for-statement-runtime-semantics-labelledevaluation
      7 features: [generators, destructuring-binding]
      8 flags: [generated]
      9 info: |
     10    IterationStatement :
     11        for ( var VariableDeclarationList ; Expressionopt ; Expressionopt ) Statement
     12 
     13    1. Let varDcl be the result of evaluating VariableDeclarationList.
     14    [...]
     15 
     16    13.3.2.4 Runtime Semantics: Evaluation
     17 
     18    VariableDeclarationList : VariableDeclarationList , VariableDeclaration
     19 
     20    1. Let next be the result of evaluating VariableDeclarationList.
     21    2. ReturnIfAbrupt(next).
     22    3. Return the result of evaluating VariableDeclaration.
     23 
     24    VariableDeclaration : BindingPattern Initializer
     25 
     26    1. Let rhs be the result of evaluating Initializer.
     27    2. Let rval be GetValue(rhs).
     28    3. ReturnIfAbrupt(rval).
     29    4. Return the result of performing BindingInitialization for BindingPattern
     30       passing rval and undefined as arguments.
     31 
     32    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     33    BindingRestElement : ... BindingIdentifier
     34    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
     35       environment).
     36    2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
     37       a. If iteratorRecord.[[done]] is false,
     38          i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
     39          ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
     40              true.
     41          iii. ReturnIfAbrupt(next).
     42 
     43 ---*/
     44 var first = 0;
     45 var second = 0;
     46 var iter = function*() {
     47  first += 1;
     48  throw new Test262Error();
     49  second += 1;
     50 }();
     51 
     52 assert.throws(Test262Error, function() {
     53  for (var [...x] = iter; iterCount < 1; ) {
     54    return;
     55  }
     56 });
     57 
     58 iter.next();
     59 assert.sameValue(first, 1);
     60 assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
     61 
     62 reportCompare(0, 0);