lgcl-and-assignment-operator-bigint.js

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// Copyright (c) 2020 Ecma International.  All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: sec-assignment-operators-runtime-semantics-evaluation

description: Logical And Assignment Operator

features: [BigInt, logical-assignment-operators]

info: |

    AssignmentExpression:

      LeftHandSideExpression &&= AssignmentExpression

    1. Let lref be the result of evaluating LeftHandSideExpression.

    2. Let lval be ? GetValue(lref).

    3. Let lbool be ! ToBoolean(lval).

    4. If lbool is false, return lval.

    5. Let rref be the result of evaluating AssignmentExpression.

    6. Let rval be ? GetValue(rref).

    7. Perform ? PutValue(lref, rval).

    8. Return rval.

---*/

var value = 0n;

assert.sameValue(value &&= 1n, 0n, "(value &&= 1n) === 0n; where value = 0n");

value = 2n;

assert.sameValue(value &&= 1n, 1n, "(value &&= 1n) === 1n; where value = 2n");

reportCompare(0, 0);