抛出专属异常

Author: walterlv

src/DotNetCampus.CommandLine/CommandRunner.cs

@@ -1,6 +1,7 @@
 using System.Collections.Concurrent;
 using System.ComponentModel;
 using DotNetCampus.Cli.Compiler;
+using DotNetCampus.Cli.Exceptions;
 using DotNetCampus.Cli.Utils.Handlers;
 
 namespace DotNetCampus.Cli;
@@ -195,8 +196,9 @@ public Task<int> RunAsync()
 
         if (handler is null)
         {
-            throw new InvalidOperationException(
-                $"No command handler found for verb '{_commandLine.GuessedVerbName}'. Please ensure that the command handler is registered correctly.");
+            throw new CommandVerbNotFoundException(
+                $"No command handler found for verb '{_commandLine.GuessedVerbName}'. Please ensure that the command handler is registered correctly.",
+                _commandLine.GuessedVerbName);
         }
 
         return handler.RunAsync();

src/DotNetCampus.CommandLine/Exceptions/CommandVerbNotFoundException.cs

@@ -0,0 +1,23 @@
+namespace DotNetCampus.Cli.Exceptions;
+
+/// <summary>
+/// 表示输入的命令行在匹配多个命令行参数选项、谓词或处理器时，没有任何一个匹配到的异常。
+/// </summary>
+public class CommandVerbNotFoundException : CommandLineException
+{
+    /// <summary>
+    /// 获取命令行谓词的名称。
+    /// </summary>
+    public string? VerbName { get; }
+
+    /// <summary>
+    /// 初始化 <see cref="CommandVerbNotFoundException"/> 类的新实例。
+    /// </summary>
+    /// <param name="message">异常提示信息。</param>
+    /// <param name="verbName">命令行谓词的名称。</param>
+    public CommandVerbNotFoundException(string message, string? verbName)
+        : base(message)
+    {
+        VerbName = verbName;
+    }
+}