查找空函数体

主要用于Unity项目里删除空的Awake()、Start()、Update()、FixedUpdate()和LateUpdate()等
方法1：直接在编辑器里模式匹配查找替换，表达式：voids*Updates*?(s*?)s*?n*?{n*?s*?}
方法2：免得忘记匹配模式，写几行代码来改

using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using UnityEngine;
using UnityEditor;


public class HandleEmptyFunction
{
    private static readonly string defaultPath = @"H:UnityProjectsTestAssetsScripts";
    private static readonly string pattern = @"voids*Updates*?(s*?)s*?n*?{n*?s*?}";
    private static readonly bool chooseFolder = true;
    private static readonly bool removeEmptyFunction = true;

    [MenuItem("MyTools/HandleEmptyFunc")]
    public static void Check()
    {
        string selectedPath = "";
        if (chooseFolder)
        {
            selectedPath = EditorUtility.OpenFolderPanel("Select Folder", Application.dataPath, "");
        }
        else
        {
            selectedPath = defaultPath;
        }
        if (selectedPath.Length == 0)
        {
            Debug.Log("取 消");

            return;
        }
        
        DirectoryInfo directoryInfo = new DirectoryInfo(selectedPath);

        //如果使用 GetFiles 出现内存不够的情况（基本不会的啦），可改用 Directory.EnumerateFiles()
        string[] files = Directory.GetFiles(selectedPath, "*.cs", SearchOption.AllDirectories);
        foreach (string file in files)
        {
            string s = File.ReadAllText(file);
            Match match = Regex.Match(s, pattern);
            if (match.Success)
            {
                Debug.Log($"{file} contains empty Update function");

                if (removeEmptyFunction)
                {
                    s = Regex.Replace(s, pattern, "");
                    File.WriteAllText(file, s, Encoding.UTF8);
                }
            }
        }
    }
}

方法3：Mono.Cecil读取dll来查找——Unity3D 查找Update函数体为空的类