076b3d9b0aPR-URL: https://github.com/nodejs/node/pull/18320 Reviewed-By: James M Snell <jasnell@gmail.com>
50 lines
1 KiB
JavaScript
50 lines
1 KiB
JavaScript
'use strict';
|
|
|
|
const common = require('../common.js');
|
|
const assert = require('assert');
|
|
|
|
const bench = common.createBenchmark(main, {
|
|
method: ['swap', 'destructure'],
|
|
millions: [100]
|
|
});
|
|
|
|
function runSwapManual(millions) {
|
|
var x, y, r;
|
|
bench.start();
|
|
for (var i = 0; i < millions * 1e6; i++) {
|
|
x = 1, y = 2;
|
|
r = x;
|
|
x = y;
|
|
y = r;
|
|
assert.strictEqual(x, 2);
|
|
assert.strictEqual(y, 1);
|
|
}
|
|
bench.end(millions);
|
|
}
|
|
|
|
function runSwapDestructured(millions) {
|
|
var x, y;
|
|
bench.start();
|
|
for (var i = 0; i < millions * 1e6; i++) {
|
|
x = 1, y = 2;
|
|
[x, y] = [y, x];
|
|
assert.strictEqual(x, 2);
|
|
assert.strictEqual(y, 1);
|
|
}
|
|
bench.end(millions);
|
|
}
|
|
|
|
function main({ millions, method }) {
|
|
switch (method) {
|
|
case '':
|
|
// Empty string falls through to next line as default, mostly for tests.
|
|
case 'swap':
|
|
runSwapManual(millions);
|
|
break;
|
|
case 'destructure':
|
|
runSwapDestructured(millions);
|
|
break;
|
|
default:
|
|
throw new Error(`Unexpected method "${method}"`);
|
|
}
|
|
}
|