| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding-for-await/obj-ptrn-id-init-fn-name-cover.case |
| // - src/dstr-binding-for-await/default/for-await-of-async-func-const.template |
| /*--- |
| description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (for-await-of statement) |
| esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation |
| features: [destructuring-binding, async-iteration] |
| flags: [generated, async] |
| info: | |
| IterationStatement : |
| for await ( ForDeclaration of AssignmentExpression ) Statement |
| |
| [...] |
| 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, |
| lexicalBinding, labelSet, async). |
| |
| 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation |
| |
| [...] |
| 4. Let destructuring be IsDestructuring of lhs. |
| [...] |
| 6. Repeat |
| [...] |
| j. If destructuring is false, then |
| [...] |
| k. Else |
| i. If lhsKind is assignment, then |
| [...] |
| ii. Else if lhsKind is varBinding, then |
| [...] |
| iii. Else, |
| 1. Assert: lhsKind is lexicalBinding. |
| 2. Assert: lhs is a ForDeclaration. |
| 3. Let status be the result of performing BindingInitialization |
| for lhs passing nextValue and iterationEnv as arguments. |
| [...] |
| |
| 13.3.3.7 Runtime Semantics: KeyedBindingInitialization |
| |
| SingleNameBinding : BindingIdentifier Initializer_opt |
| |
| [...] |
| 6. If Initializer is present and v is undefined, then |
| [...] |
| d. If IsAnonymousFunctionDefinition(Initializer) is true, then |
| i. Let hasNameProperty be HasOwnProperty(v, "name"). |
| ii. ReturnIfAbrupt(hasNameProperty). |
| iii. If hasNameProperty is false, perform SetFunctionName(v, |
| bindingId). |
| ---*/ |
| |
| var iterCount = 0; |
| |
| async function fn() { |
| for await (const { cover = (function () {}), xCover = (0, function() {}) } of [{}]) { |
| assert.sameValue(cover.name, 'cover'); |
| assert.notSameValue(xCover.name, 'xCover'); |
| |
| iterCount += 1; |
| } |
| } |
| |
| fn() |
| .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) |
| .then($DONE, $DONE); |