| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case |
| // - src/dstr-binding/error/gen-func-decl.template |
| /*--- |
| description: Error forwarding when IteratorStep returns an abrupt completion (generator function declaration) |
| esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject |
| features: [Symbol.iterator, generators, destructuring-binding] |
| flags: [generated] |
| info: | |
| GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody } |
| |
| [...] |
| 2. Let F be GeneratorFunctionCreate(Normal, FormalParameters, |
| GeneratorBody, scope, strict). |
| [...] |
| |
| 9.2.1 [[Call]] ( thisArgument, argumentsList) |
| |
| [...] |
| 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList). |
| [...] |
| |
| 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList ) |
| |
| 1. Let status be FunctionDeclarationInstantiation(F, argumentsList). |
| [...] |
| |
| 9.2.12 FunctionDeclarationInstantiation(func, argumentsList) |
| |
| [...] |
| 23. Let iteratorRecord be Record {[[iterator]]: |
| CreateListIterator(argumentsList), [[done]]: false}. |
| 24. If hasDuplicates is true, then |
| [...] |
| 25. Else, |
| b. Let formalStatus be IteratorBindingInitialization for formals with |
| iteratorRecord and env as arguments. |
| [...] |
| |
| 13.3.3.6 Runtime Semantics: IteratorBindingInitialization |
| |
| SingleNameBinding : BindingIdentifier Initializeropt |
| |
| [...] |
| 4. 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 g = {}; |
| g[Symbol.iterator] = function() { |
| return { |
| next: function() { |
| throw new Test262Error(); |
| } |
| }; |
| }; |
| |
| function* f([x]) {} |
| |
| assert.throws(Test262Error, function() { |
| f(g); |
| }); |