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// Copyright (C) 2016 Rick Waldron, André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
author: Rick Waldron, André Bargull
esid: sec-exp-operator-runtime-semantics-evaluation
description: Exponentiation Operator expression order of evaluation
info: |
ExponentiationExpression:
UpdateExpression ** ExponentiationExpression
1. Let left be the result of evaluating UpdateExpression.
2. Let leftValue be ? GetValue(left).
3. Let right be the result of evaluating ExponentiationExpression.
4. Let rightValue be ? GetValue(right).
5. Let base be ? ToNumber(leftValue).
6. Let exponent be ? ToNumber(rightValue).
7. Return the result of Applying the ** operator with base and exponent as specified in 12.7.3.4.
---*/
var capture = [];
var leftValue = { valueOf() { capture.push("leftValue"); return 3; }};
var rightValue = { valueOf() { capture.push("rightValue"); return 2; }};
(capture.push("left"), leftValue) ** (capture.push("right"), rightValue);
// Expected per operator evaluation order: "left", "right", "leftValue", "rightValue"
assert.sameValue(capture[0], "left", "Expected the 1st element captured to be 'left'");
assert.sameValue(capture[1], "right", "Expected the 2nd element captured to be 'right'");
assert.sameValue(capture[2], "leftValue", "Expected the 3rd element captured to be 'leftValue'");
assert.sameValue(capture[3], "rightValue", "Expected the 4th element captured to be 'rightValue'");
reportCompare(0, 0);
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