const-obj-ptrn-id-init-fn-name-gen.js (2065B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/obj-ptrn-id-init-fn-name-gen.case 3 // - src/dstr-binding/default/for-of-const.template 4 /*--- 5 description: SingleNameBinding assigns name to "anonymous" generator functions (for-of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [generators, destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( ForDeclaration of AssignmentExpression ) Statement 12 13 [...] 14 3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 15 lexicalBinding, labelSet). 16 17 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 18 19 [...] 20 3. Let destructuring be IsDestructuring of lhs. 21 [...] 22 5. Repeat 23 [...] 24 h. If destructuring is false, then 25 [...] 26 i. Else 27 i. If lhsKind is assignment, then 28 [...] 29 ii. Else if lhsKind is varBinding, then 30 [...] 31 iii. Else, 32 1. Assert: lhsKind is lexicalBinding. 33 2. Assert: lhs is a ForDeclaration. 34 3. Let status be the result of performing BindingInitialization 35 for lhs passing nextValue and iterationEnv as arguments. 36 [...] 37 38 13.3.3.7 Runtime Semantics: KeyedBindingInitialization 39 40 SingleNameBinding : BindingIdentifier Initializeropt 41 42 [...] 43 6. If Initializer is present and v is undefined, then 44 [...] 45 d. If IsAnonymousFunctionDefinition(Initializer) is true, then 46 i. Let hasNameProperty be HasOwnProperty(v, "name"). 47 ii. ReturnIfAbrupt(hasNameProperty). 48 iii. If hasNameProperty is false, perform SetFunctionName(v, 49 bindingId). 50 51 ---*/ 52 53 var iterCount = 0; 54 55 for (const { gen = function* () {}, xGen = function* x() {} } of [{}]) { 56 assert.sameValue(gen.name, 'gen'); 57 assert.notSameValue(xGen.name, 'xGen'); 58 59 iterCount += 1; 60 } 61 62 assert.sameValue(iterCount, 1, 'iteration occurred as expected'); 63 64 reportCompare(0, 0);