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The assignment operator evaluates its operands from left to right. When the left-hand side expression is a property accessor, RequireObjectCoercible and ToPropertyKey are called on the property accessor before the right-hand side expression is evaluated.
26 lines
637 B
JavaScript
Executable File
26 lines
637 B
JavaScript
Executable File
// Copyright (C) 2015 André Bargull. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: Assignment Operator evaluates its operands from left to right.
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description: >
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The left-hand side expression is evaluated before the right-hand side.
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Left-hand side expression is MemberExpression: base[prop]. ToPropertyKey(prop)
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is only called once.
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---*/
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var propKeyEvaluated = false;
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var base = {};
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var prop = {
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toString: function() {
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assert(!propKeyEvaluated);
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propKeyEvaluated = true;
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return "";
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}
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};
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var expr = function() {
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return 0;
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};
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base[prop] = expr();
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