'use strict';
var common = require('../common.js');
var querystring = require('querystring');
var v8 = require('v8');

var inputs = {
  noencode: 'foo=bar&baz=quux&xyzzy=thud',
  multicharsep: 'foo=bar&&&&&&&&&&baz=quux&&&&&&&&&&xyzzy=thud',
  encodefake: 'foo=%©ar&baz=%A©uux&xyzzy=%©ud',
  encodemany: '%66%6F%6F=bar&%62%61%7A=quux&xyzzy=%74h%75d',
  encodelast: 'foo=bar&baz=quux&xyzzy=thu%64',
  multivalue: 'foo=bar&foo=baz&foo=quux&quuy=quuz',
  multivaluemany: 'foo=bar&foo=baz&foo=quux&quuy=quuz&foo=abc&foo=def&' +
                  'foo=ghi&foo=jkl&foo=mno&foo=pqr&foo=stu&foo=vwxyz',
  manypairs: 'a&b&c&d&e&f&g&h&i&j&k&l&m&n&o&p&q&r&s&t&u&v&w&x&y&z',
  manyblankpairs: '&&&&&&&&&&&&&&&&&&&&&&&&',
  altspaces: 'foo+bar=baz+quux&xyzzy+thud=quuy+quuz&abc=def+ghi'
};

var bench = common.createBenchmark(main, {
  type: Object.keys(inputs),
  n: [1e6],
});

// A deopt followed by a reopt of main() can happen right when the timed loop
// starts, which seems to have a noticeable effect on the benchmark results.
// So we explicitly disable optimization of main() to avoid this potential
// issue.
v8.setFlagsFromString('--allow_natives_syntax');
eval('%NeverOptimizeFunction(main)');

function main(conf) {
  var type = conf.type;
  var n = conf.n | 0;
  var input = inputs[type];
  var i;

  // Note: we do *not* use OptimizeFunctionOnNextCall() here because currently
  // it causes a deopt followed by a reopt, which could make its way into the
  // timed loop. Instead, just execute the function a "sufficient" number of
  // times before the timed loop to ensure the function is optimized just once.
  if (type === 'multicharsep') {
    for (i = 0; i < n; i += 1)
      querystring.parse(input, '&&&&&&&&&&');

    bench.start();
    for (i = 0; i < n; i += 1)
      querystring.parse(input, '&&&&&&&&&&');
    bench.end(n);
  } else {
    for (i = 0; i < n; i += 1)
      querystring.parse(input);

    bench.start();
    for (i = 0; i < n; i += 1)
      querystring.parse(input);
    bench.end(n);
  }
}