src/dstr-assignment/syntax/for-in.template


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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
path: language/statements/for-in/dstr-
name: >
    For..in statement
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
es6id: 13.7.5.11
features: [destructuring-binding]
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.
  [...]
---*/

for (/*{ elems }*/ in [/*{ vals }*/]) ;