// This file was procedurally generated from the following sources: // - src/dstr-assignment/obj-prop-elem-target-obj-literal-prop-ref.case // - src/dstr-assignment/default/for-of.template /*--- description: The DestructuringAssignmentTarget of an AssignmentElement can extend to LHSExpressions if it is neither an ObjectLiteral nor an ArrayLiteral and its AssignmentTargetTyp is simple. Using MemberExpression (ObjLiteral + identifier). (For..of statement) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation features: [destructuring-binding] flags: [generated] info: | IterationStatement : for ( LeftHandSideExpression of AssignmentExpression ) Statement 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », AssignmentExpression, iterate). 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 4. If destructuring is true and if lhsKind is assignment, then a. Assert: lhs is a LeftHandSideExpression. b. Let assignmentPattern be the parse of the source text corresponding to lhs using AssignmentPattern as the goal symbol. [...] Syntax AssignmentPattern : ObjectAssignmentPattern ObjectAssignmentPattern : { AssignmentPropertyList } AssignmentPropertyList : AssignmentProperty AssignmentProperty : PropertyName : AssignmentElement AssignmentElement : DestructuringAssignmentTarget Initializer_opt DestructuringAssignmentTarget : LeftHandSideExpression Static Semantics: Early Errors DestructuringAssignmentTarget : LeftHandSideExpression - It is a Syntax Error if LeftHandSideExpression is either an ObjectLiteral or an ArrayLiteral and if LeftHandSideExpression is not covering an AssignmentPattern. - It is a Syntax Error if LeftHandSideExpression is neither an ObjectLiteral nor an ArrayLiteral and AssignmentTargetType(LeftHandSideExpression) is not simple. Runtime Semantics: DestructuringAssignmentEvaluation ObjectAssignmentPattern : { AssignmentPropertyList } 1. Perform ? RequireObjectCoercible(value). 2. Perform ? PropertyDestructuringAssignmentEvaluation for AssignmentPropertyList using value as the argument. 3. Return NormalCompletion(empty). Runtime Semantics: PropertyDestructuringAssignmentEvaluation AssignmentProperty : PropertyName : AssignmentElement 1. Let name be the result of evaluating PropertyName. 2. ReturnIfAbrupt(name). 3. Perform ? KeyedDestructuringAssignmentEvaluation of AssignmentElement with value and name as the arguments. 4. Return a new List containing name. Runtime Semantics: KeyedDestructuringAssignmentEvaluation AssignmentElement : DestructuringAssignmentTarget Initializer 1. If DestructuringAssignmentTarget is neither an ObjectLiteral nor an ArrayLiteral, then a. Let lref be the result of evaluating DestructuringAssignmentTarget. ... ---*/ var setValue; var counter = 0; for ({ x: { get y() { throw new Test262Error('The property should not be accessed.'); }, set y(val) { setValue = val; } }.y} of [{x: 23}]) { assert.sameValue(setValue, 23); counter += 1; } assert.sameValue(counter, 1); reportCompare(0, 0);