src/dstr-assignment/array-elem-put-obj-literal-prop-ref-init.case

// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: prod-DestructuringAssignmentTarget
desc: >
  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) with initializer.
info: |
  Syntax

  AssignmentPattern : ArrayAssignmentPattern
  ArrayAssignmentPattern : [ AssignmentElementList ]
  AssignmentElementList : AssignmentElisionElement
  AssignmentElisionElement : Elision_opt 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
  ArrayAssignmentPattern : [ AssignmentElementList ]

  1. Let iteratorRecord be ? GetIterator(value).
  2. Let result be IteratorDestructuringAssignmentEvaluation of AssignmentElementList with argument iteratorRecord.
  3. If iteratorRecord.[[Done]] is false, return ? IteratorClose(iteratorRecord, result).
  4. Return result.

  Runtime Semantics: IteratorDestructuringAssignmentEvaluation
  AssignmentElement : DestructuringAssignmentTarget Initializer

  1. If DestructuringAssignmentTarget is neither an ObjectLiteral nor an ArrayLiteral, then
    a. Let lref be the result of evaluating DestructuringAssignmentTarget.
  ...
  7. Return ? PutValue(lref, v).
template: default
---*/

//- setup
var x, setValue;
//- elems
[{
  get y() {
    throw new Test262Error('The property should not be accessed.');
  },
  set y(val) {
    setValue = val;
  }
}.y = 42]
//- vals
[23]
//- body
assert.sameValue(setValue, 23);