| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-elision-step-err.case |
| // - src/dstr-binding/error/for-var.template |
| /*--- |
| description: Elision advances iterator and forwards abrupt completions (for statement) |
| esid: sec-for-statement-runtime-semantics-labelledevaluation |
| features: [generators, destructuring-binding] |
| flags: [generated] |
| info: | |
| IterationStatement : |
| for ( var VariableDeclarationList ; Expressionopt ; Expressionopt ) Statement |
| |
| 1. Let varDcl be the result of evaluating VariableDeclarationList. |
| [...] |
| |
| 13.3.2.4 Runtime Semantics: Evaluation |
| |
| VariableDeclarationList : VariableDeclarationList , VariableDeclaration |
| |
| 1. Let next be the result of evaluating VariableDeclarationList. |
| 2. ReturnIfAbrupt(next). |
| 3. Return the result of evaluating VariableDeclaration. |
| |
| VariableDeclaration : BindingPattern Initializer |
| |
| 1. Let rhs be the result of evaluating Initializer. |
| 2. Let rval be GetValue(rhs). |
| 3. ReturnIfAbrupt(rval). |
| 4. Return the result of performing BindingInitialization for BindingPattern |
| passing rval and undefined as arguments. |
| |
| 13.3.3.6 Runtime Semantics: IteratorBindingInitialization |
| |
| ArrayBindingPattern : [ Elision ] |
| |
| 1. Return the result of performing |
| IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord |
| as the argument. |
| |
| 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation |
| |
| Elision : , |
| |
| 1. If iteratorRecord.[[done]] is false, then |
| a. Let next be IteratorStep(iteratorRecord.[[iterator]]). |
| b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. |
| c. ReturnIfAbrupt(next). |
| |
| ---*/ |
| var following = 0; |
| var iter =function* () { |
| throw new Test262Error(); |
| following += 1; |
| }(); |
| |
| assert.throws(Test262Error, function() { |
| for (var [,] = iter; iterCount < 1; ) { |
| return; |
| } |
| }); |
| |
| iter.next(); |
| assert.sameValue(following, 0, 'Iterator was properly closed.'); |