Added additional source generation pieces

Author: david-driscoll

src/JsonRpc.Generators/GenerateHandlerMethodsGenerator.cs

@@ -131,25 +131,23 @@ public void Execute(GeneratorExecutionContext context)
                                  new[] {
                                      NamespaceDeclaration(ParseName(symbol.ContainingNamespace.ToDisplayString()))
                                         .WithMembers(
-                                             List(
-                                                 new MemberDeclarationSyntax[] {
-                                                     ClassDeclaration(className)
-                                                        .WithAttributeLists(attributes)
-                                                        .WithModifiers(
-                                                             TokenList(
-                                                                 new[] { isInternal ? Token(SyntaxKind.InternalKeyword) : Token(SyntaxKind.PublicKeyword) }.Concat(
-                                                                     new[] {
-                                                                         Token(SyntaxKind.StaticKeyword),
-                                                                         Token(SyntaxKind.PartialKeyword)
-                                                                     }
-                                                                 )
+                                             SingletonList<MemberDeclarationSyntax>(
+                                                 ClassDeclaration(className)
+                                                    .WithAttributeLists(attributes)
+                                                    .WithModifiers(
+                                                         TokenList(
+                                                             new[] { isInternal ? Token(SyntaxKind.InternalKeyword) : Token(SyntaxKind.PublicKeyword) }.Concat(
+                                                                 new[] {
+                                                                     Token(SyntaxKind.StaticKeyword),
+                                                                     Token(SyntaxKind.PartialKeyword)
+                                                                 }
                                                              )
                                                          )
-                                                        .WithMembers(List(methods))
-                                                        .WithLeadingTrivia(TriviaList(Trivia(NullableDirectiveTrivia(Token(SyntaxKind.EnableKeyword), true))))
-                                                        .WithTrailingTrivia(TriviaList(Trivia(NullableDirectiveTrivia(Token(SyntaxKind.RestoreKeyword), true))))
-                                                        .NormalizeWhitespace()
-                                                 }
+                                                     )
+                                                    .WithMembers(List(methods))
+                                                    .WithLeadingTrivia(TriviaList(Trivia(NullableDirectiveTrivia(Token(SyntaxKind.EnableKeyword), true))))
+                                                    .WithTrailingTrivia(TriviaList(Trivia(NullableDirectiveTrivia(Token(SyntaxKind.RestoreKeyword), true))))
+                                                    .NormalizeWhitespace()
                                              )
                                          )
                                  }

src/JsonRpc.Generators/GeneratorDiagnostics.cs

@@ -6,17 +6,36 @@ internal static class GeneratorDiagnostics
     {
         public static DiagnosticDescriptor MissingDirection { get; } = new DiagnosticDescriptor(
             "LSP1000", "Missing Direction",
-            "No direction defined for Language Server Protocol Handler", "JsonRPC", DiagnosticSeverity.Warning, true
+            "No direction defined for Language Server Protocol Handler", "LSP", DiagnosticSeverity.Warning, true
+        );
+        public static DiagnosticDescriptor Exception { get; } = new DiagnosticDescriptor(
+            "JRPC0001", "Exception",
+            "{0}", "JRPC", DiagnosticSeverity.Error, true
         );
 
         public static DiagnosticDescriptor NoHandlerRegistryProvided { get; } = new DiagnosticDescriptor(
             "JRPC1000", "No Handler Registry Provided",
-            "No Handler Registry Provided for handler {0}.", "JsonRPC", DiagnosticSeverity.Warning, true
+            "No Handler Registry Provided for handler {0}.", "JsonRPC", DiagnosticSeverity.Info, true
         );
 
         public static DiagnosticDescriptor NoResponseRouterProvided { get; } = new DiagnosticDescriptor(
             "JRPC1001", "No Response Router Provided",
-            "No Response Router Provided for handler {0}, defaulting to {1}.", "JsonRPC", DiagnosticSeverity.Warning, true
+            "No Response Router Provided for handler {0}, defaulting to {1}.", "JsonRPC", DiagnosticSeverity.Info, true
+        );
+
+        public static DiagnosticDescriptor ClassMustBePartial { get; } = new DiagnosticDescriptor(
+            "JRPC1002", "Class must be made partial",
+            "Class {0} must be made partial.", "JsonRPC", DiagnosticSeverity.Warning, true
+        );
+
+        public static DiagnosticDescriptor MustInheritFromCanBeResolved { get; } = new DiagnosticDescriptor(
+            "LSP1001", "The target class must implement ICanBeResolved",
+            "The target class must implement ICanBeResolved", "LSP", DiagnosticSeverity.Error, true
+        );
+
+        public static DiagnosticDescriptor MustInheritFromCanHaveData { get; } = new DiagnosticDescriptor(
+            "LSP1002", "The target class must implement ICanHaveData",
+            "The target class must implement ICanHaveData", "LSP", DiagnosticSeverity.Error, true
         );
     }
 }