欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

冷算法:自动生成代码标识符(类名、方法名、变量名)

程序员文章站 2022-05-12 15:01:38
...

竟然有小伙伴喜欢在编写代码时使用随机字符当作类名、方法名、变量名,例如这一篇博客里的代码:使用 Resharper 特性 - 林德熙。既然随机,那也随机得像一些啊!于是我改进了标识符的随机算法,使得生成的标识符更像真实单词的组合。


看看标识符的生成效果吧!0、2、4……行是 PascalCase,即首字母大写的;1、3、5……行是 camelCase 即首字母小写的。

冷算法:自动生成代码标识符(类名、方法名、变量名)
▲ 是不是感觉甚至能读出来?

嗯嗯,因为生成规则中考虑到了辅音和元音的组合,而且……嗯……还考虑到了部件出现的概率。

比如一个单词中的音节数,单音节概率 44%,双音节概率 31%,三音节概率 19%,四音节概率 6%。而这样的概率是通过一个幂函数来实现的。具体来说,是下面这个函数:

冷算法:自动生成代码标识符(类名、方法名、变量名)

好吧,把我的源码放出来:

public class RandomIdentifier
{
    private readonly Random _random = new Random();

    public string Generate(bool pascal)
    {
        var builder = new StringBuilder();
        var wordCount = _random.Next(2, 4);
        for (var i = 0; i < wordCount; i++)
        {
            var syllableCount = 4 - (int) Math.Sqrt(_random.Next(0, 16));
            for (var j = 0; j < syllableCount; j++)
            {
                var consonant = Consonants[_random.Next(Consonants.Count)];
                var vowel = Vowels[_random.Next(Vowels.Count)];
                if ((pascal || i != 0) && j == 0)
                {
                    consonant = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(consonant);
                }

                builder.Append(consonant);
                builder.Append(vowel);
            }
        }

        return builder.ToString();
    }

    private static readonly List<string> Consonants = new List<string>
    {
        "q","w","r","t","y","p","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m",
        "w","r","t","p","s","d","f","g","h","j","k","l","c","b","n","m",
        "r","t","p","s","d","h","j","k","l","c","b","n","m",
        "r","t","s","j","c","n","m",
        "tr","dr","ch","wh","st",
        "s","s"
    };

    private static readonly List<string> Vowels = new List<string>
    {
        "a","e","i","o","u",
        "a","e","i","o","u",
        "a","e","i",
        "a","e",
        "e",
        "ar","as","ai","air","ay","al","all","aw",
        "ee","ea","ear","em","er","el","ere",
        "is","ir",
        "ou","or","oo","ou","ow",
        "ur"
    };
}

而使用方法,则是简单的一个调用:

var identifier = new RandomIdentifier();
var pascal = _identifier.Generate(true);
var camel = _identifier.Generate(false);

传入 true 生成首字母大写的版本,传入 false 生成首字母小写的版本。