UVP 价值专家 | 主程必杀技：Unity C# 代码整洁之道（四）

public const string FORCE_NAMING_CONVENTIONS_ID= "FERR1004";

using Microsoft.CodeAnalysis.Diagnostics;using Microsoft.CodeAnalysis;using System;using System.Collections.Generic;using System.Text;using System.Collections.Immutable;using Analyzer;using Microsoft.CodeAnalysis.CSharp.Syntax;using System.Linq;
namespace CdeAnalyzer{    /**     * Author: Laugh（笑微）     * https://developer.unity.cn/projects/65937455edbc2a001cbd8102     */    [DiagnosticAnalyzer(LanguageNames.CSharp)]    internal class ForbidInheritFromMonoBehavor : DiagnosticAnalyzer    {        /// <summary>        /// 错误描述        /// </summary>        private static readonly DiagnosticDescriptor ForbidInheritDescriptor =            new DiagnosticDescriptor(                DianogsticIDs.FORCE_FORBID_INHERIT_MONOBEHAVIOR_ID,          // ID                "实现了IFrameDrivable接口的类，不能继承自MonoBehavior",    // Title                "实现了IFrameDrivable接口的类，不能继承自MonoBehavior", // Message format                DiagnosticCategories.Criterion,                // Category                DiagnosticSeverity.Error, // Severity                isEnabledByDefault: true    // Enabled by default            );        public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(ForbidInheritDescriptor);
        /// <summary>        /// 初始化分析方法        /// </summary>        /// <param name="context"></param>        public override void Initialize(AnalysisContext context)        {            context.RegisterSyntaxTreeAction(AnalyzeSymbol);        }        /// <summary>        /// 检测方法        /// </summary>        /// <param name="context"></param>        private static void AnalyzeSymbol(SyntaxTreeAnalysisContext context)        {            //找到文档的语法根树            var root = context.Tree.GetRoot(context.CancellationToken);            if (ConstraintDefinition.ExcludeAnalize(context.Tree.FilePath))            {//排除特殊目录                return;            }
            var classList = root.DescendantNodes()?.OfType<ClassDeclarationSyntax>();            foreach(var cls in classList)            {//遍历语法树中的所有类                var baseClsList = cls.BaseList?.ChildNodes()?.OfType<SimpleBaseTypeSyntax>();                if (baseClsList == null)                {                    break;                }                bool isMonoBehavior = false;                bool isFrameDrivable = false;                foreach (var bcls in baseClsList)                {                    var idName = bcls.ChildNodes()?.OfType<IdentifierNameSyntax>()?.First();                    var bname = idName.ToString();                    if(bname == "IFrameDrivable")                    {//检查是否实现了接口IFrameDrivable                        isFrameDrivable = true;                    }                    else if (bname == "ArrayList")                    {//检查是否继承自MonoBehavior                        isMonoBehavior = true;                    }                }                if (isFrameDrivable && isMonoBehavior)                {                    //报错                    var diagnostic = Diagnostic.Create(ForbidInheritDescriptor, cls.GetFirstToken().GetLocation());                    context.ReportDiagnostic(diagnostic);                }            }
        }    }}