remove regexp test & only support v4, v6

[JacksonTian]

[mention-bot]

@JacksonTian, thanks for your PR! By analyzing the annotation information on this pull request, we identified @fengmk2, @dead-horse and @shaoshuai0102 to be potential reviewers

[JacksonTian]

看来需要先hold住这个patch。

'use strict';

/**
 * Module dependencies.
 */

var Benchmark = require('benchmark');
var benchmarks = require('beautify-benchmark');


var regexp = function (type) {
  return /Exception$/.test(type) || /^java\.lang\.\w+Error$/.test(type);
};

var xwith = function (type) {
  return type.endsWith('Exception') || (type.endsWith('Error') && type.startsWith('java.lang.'));
};

var suite = new Benchmark.Suite();

suite

.add('regexp: java.util.ArrayList', function() {
  regexp('java.util.ArrayList');
})
.add('xwith: java.util.ArrayList', function() {
  xwith('java.util.ArrayList');
})

.add('regexp: com.alibaba.TESTObject', function() {
  regexp('com.alibaba.TESTObject');
})
.add('xwith: com.alibaba.TESTObject', function() {
  xwith('com.alibaba.TESTObject');
})

.add('regexp: java.lang.NoClassDefFoundError', function() {
  regexp('java.lang.NoClassDefFoundError');
})
.add('xwith: java.lang.NoClassDefFoundError', function() {
  xwith('java.lang.NoClassDefFoundError');
})

.add('regexp: java.io.IOException', function() {
  regexp('java.io.IOException');
})
.add('xwith: java.io.IOException', function() {
  xwith('java.io.IOException');
})

.on('cycle', function(event) {
  benchmarks.add(event.target);
})
.on('start', function(event) {
  console.log('\n  node version: %s, date: %s\n  Starting...',
    process.version, Date());
})
.on('complete', function done() {
  benchmarks.log();
})
.run({ 'async': false });

hessian.js $ node benchmark/regexp_vs_with.js 


  node version: v6.4.0, date: Wed Aug 24 2016 11:14:21 GMT+0800 (CST)
  Starting...
  8 tests completed.

  regexp: java.util.ArrayList            x  9,365,011 ops/sec ±1.58% (90 runs sampled)
  xwith: java.util.ArrayList             x  9,434,344 ops/sec ±1.67% (88 runs sampled)
  regexp: com.alibaba.TESTObject         x  8,459,659 ops/sec ±1.92% (89 runs sampled)
  xwith: com.alibaba.TESTObject          x 10,081,475 ops/sec ±1.61% (89 runs sampled)
  regexp: java.lang.NoClassDefFoundError x  7,038,646 ops/sec ±1.08% (98 runs sampled)
  xwith: java.lang.NoClassDefFoundError  x  5,008,162 ops/sec ±1.65% (93 runs sampled)
  regexp: java.io.IOException            x 13,976,183 ops/sec ±2.96% (95 runs sampled)
  xwith: java.io.IOException             x 12,927,316 ops/sec ±1.48% (85 runs sampled)

hessian.js $ tnvm use node-v4.5.0
Now using node node-v4.5.0 (npm v2.15.9)
hessian.js $ node benchmark/regexp_vs_with.js 


  node version: v4.5.0, date: Wed Aug 24 2016 11:16:14 GMT+0800 (CST)
  Starting...
  8 tests completed.

  regexp: java.util.ArrayList            x 10,596,364 ops/sec ±1.66% (89 runs sampled)
  xwith: java.util.ArrayList             x  6,064,788 ops/sec ±1.51% (87 runs sampled)
  regexp: com.alibaba.TESTObject         x  9,656,040 ops/sec ±1.81% (88 runs sampled)
  xwith: com.alibaba.TESTObject          x  5,047,786 ops/sec ±1.60% (87 runs sampled)
  regexp: java.lang.NoClassDefFoundError x  6,410,909 ops/sec ±3.05% (83 runs sampled)
  xwith: java.lang.NoClassDefFoundError  x  3,136,805 ops/sec ±1.76% (86 runs sampled)
  regexp: java.io.IOException            x 14,832,236 ops/sec ±1.65% (89 runs sampled)
  xwith: java.io.IOException             x 10,196,105 ops/sec ±1.95% (87 runs sampled)

starts/endsWith比正则表达式快需要一些条件：

• V8的优化。目前4.x下的V8明显不适合。
• unmatch的情况下，starts/ends更有优势。
• 参数长度越短，越有优势。

[fengmk2]

endsWith Polyfill on 0.12 https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith