Feature - Update to Strip Async suffix from Generated Commands (#79)

* Strip Async suffix from Generated Commands

Breaking change

* Update test

Author: ChrisPulman

README.md

@@ -233,7 +233,9 @@ using ReactiveUI.SourceGenerators;
 public partial class MyReactiveClass
 {
     [ReactiveCommand]
-    private async Task<string> Execute(string parameter) => await Task.FromResult(parameter);
+    private async Task<string> ExecuteAsync(string parameter) => await Task.FromResult(parameter);
+
+    // Generates the following code ExecuteCommand, Note the Async suffix is removed
 }
 ```
 

src/ReactiveUI.SourceGenerators.Execute.Maui/TestViewModel.cs

@@ -35,18 +35,18 @@ public TestViewModel()
     {
         Console.Out.WriteLine(Test1Command);
         Console.Out.WriteLine(Test2Command);
-        Console.Out.WriteLine(Test3AsyncCommand);
-        Console.Out.WriteLine(Test4AsyncCommand);
+        Console.Out.WriteLine(Test3Command);
+        Console.Out.WriteLine(Test4Command);
         Console.Out.WriteLine(Test5StringToIntCommand);
         Console.Out.WriteLine(Test6ArgOnlyCommand);
         Console.Out.WriteLine(Test7ObservableCommand);
         Console.Out.WriteLine(Test8ObservableCommand);
-        Console.Out.WriteLine(Test9AsyncCommand);
-        Console.Out.WriteLine(Test10AsyncCommand);
+        Console.Out.WriteLine(Test9Command);
+        Console.Out.WriteLine(Test10Command);
         Test1Command?.Execute().Subscribe();
         Test2Command?.Execute().Subscribe(r => Console.Out.WriteLine(r));
-        Test3AsyncCommand?.Execute().Subscribe();
-        Test4AsyncCommand?.Execute().Subscribe(r => Console.Out.WriteLine(r));
+        Test3Command?.Execute().Subscribe();
+        Test4Command?.Execute().Subscribe(r => Console.Out.WriteLine(r));
         Test5StringToIntCommand?.Execute("100").Subscribe(Console.Out.WriteLine);
         Test6ArgOnlyCommand?.Execute("Hello World").Subscribe();
         Test7ObservableCommand?.Execute().Subscribe();
@@ -57,12 +57,12 @@ public TestViewModel()
         Console.Out.WriteLine($"Test2Property Value: {Test2}");
         Console.Out.WriteLine($"Test2Property underlying Value: {_test2Property}");
 
-        Test9AsyncCommand?.ThrownExceptions.Subscribe(Console.Out.WriteLine);
-        var cancel = Test9AsyncCommand?.Execute().Subscribe();
+        Test9Command?.ThrownExceptions.Subscribe(Console.Out.WriteLine);
+        var cancel = Test9Command?.Execute().Subscribe();
         Task.Delay(1000).Wait();
         cancel?.Dispose();
 
-        Test10AsyncCommand?.Execute(200).Subscribe(r => Console.Out.WriteLine(r));
+        Test10Command?.Execute(200).Subscribe(r => Console.Out.WriteLine(r));
     }
 
     /// <summary>

src/ReactiveUI.SourceGenerators.Execute/TestViewModel.cs

@@ -60,18 +60,18 @@ public TestViewModel()
 
         Console.Out.WriteLine(Test1Command);
         Console.Out.WriteLine(Test2Command);
-        Console.Out.WriteLine(Test3AsyncCommand);
-        Console.Out.WriteLine(Test4AsyncCommand);
+        Console.Out.WriteLine(Test3Command);
+        Console.Out.WriteLine(Test4Command);
         Console.Out.WriteLine(Test5StringToIntCommand);
         Console.Out.WriteLine(Test6ArgOnlyCommand);
         Console.Out.WriteLine(Test7ObservableCommand);
         Console.Out.WriteLine(Test8ObservableCommand);
-        Console.Out.WriteLine(Test9AsyncCommand);
-        Console.Out.WriteLine(Test10AsyncCommand);
+        Console.Out.WriteLine(Test9Command);
+        Console.Out.WriteLine(Test10Command);
         Test1Command?.Execute().Subscribe();
         Test2Command?.Execute().Subscribe(r => Console.Out.WriteLine(r));
-        Test3AsyncCommand?.Execute().Subscribe();
-        Test4AsyncCommand?.Execute().Subscribe(r => Console.Out.WriteLine(r));
+        Test3Command?.Execute().Subscribe();
+        Test4Command?.Execute().Subscribe(r => Console.Out.WriteLine(r));
         Test5StringToIntCommand?.Execute("100").Subscribe(Console.Out.WriteLine);
         Test6ArgOnlyCommand?.Execute("Hello World").Subscribe();
         Test7ObservableCommand?.Execute().Subscribe();
@@ -122,12 +122,12 @@ public TestViewModel()
         Console.Out.WriteLine(MyReadOnlyNonNullProperty);
         Console.Out.WriteLine(_myReadOnlyNonNullProperty);
 
-        Test9AsyncCommand?.ThrownExceptions.Subscribe(Console.Out.WriteLine);
-        var cancel = Test9AsyncCommand?.Execute().Subscribe();
+        Test9Command?.ThrownExceptions.Subscribe(Console.Out.WriteLine);
+        var cancel = Test9Command?.Execute().Subscribe();
         Task.Delay(1000).Wait();
         cancel?.Dispose();
 
-        Test10AsyncCommand?.Execute(200).Subscribe(r => Console.Out.WriteLine(r));
+        Test10Command?.Execute(200).Subscribe(r => Console.Out.WriteLine(r));
         TestPrivateCanExecuteCommand?.Execute().Subscribe();
 
         Console.ReadLine();

src/ReactiveUI.SourceGenerators/ReactiveCommand/ReactiveCommandGenerator.Execute.cs

@@ -57,7 +57,7 @@ internal static MemberDeclarationSyntax[] GetCommandProperty(CommandInfo command
         {
             var outputType = commandExtensionInfo.GetOutputTypeText();
             var inputType = commandExtensionInfo.GetInputTypeText();
-            var commandName = GetGeneratedCommandName(commandExtensionInfo.MethodName);
+            var commandName = GetGeneratedCommandName(commandExtensionInfo.MethodName, commandExtensionInfo.IsTask);
             var fieldName = GetGeneratedFieldName(commandName);
 
             ExpressionSyntax initializer;
@@ -463,7 +463,7 @@ static void GatherForwardedAttributes(
             propertyAttributes = propertyAttributesInfo.ToImmutable();
         }
 
-        internal static string GetGeneratedCommandName(string methodName)
+        internal static string GetGeneratedCommandName(string methodName, bool isAsync)
         {
             var commandName = methodName;
 
@@ -476,6 +476,11 @@ internal static string GetGeneratedCommandName(string methodName)
                 commandName = commandName.TrimStart('_');
             }
 
+            if (commandName.EndsWith("Async") && isAsync)
+            {
+                commandName = commandName.Substring(0, commandName.Length - "Async".Length);
+            }
+
             return $"{char.ToUpper(commandName[0], CultureInfo.InvariantCulture)}{commandName.Substring(1)}Command";
         }