feat: add new rule SA1317

- add a diagnostic
- add an empty CodeFixProvider
- add unit tests
- add documentation

#2057

Author: melomory

StyleCop.Analyzers/StyleCop.Analyzers.CodeFixes/Helpers/TaskHelper.cs

@@ -13,6 +13,8 @@ namespace StyleCop.Analyzers.Helpers
 
     internal static class TaskHelper
     {
+        public static readonly Task CompletedTask = Task.FromResult(0);
+
         public static bool IsTaskReturningMethod(SemanticModel semanticModel, MethodDeclarationSyntax methodDeclarationSyntax, CancellationToken cancellationToken)
         {
             return IsTaskType(semanticModel, methodDeclarationSyntax.ReturnType, cancellationToken);

StyleCop.Analyzers/StyleCop.Analyzers.CodeFixes/NamingRules/SA1317CodeFixProvider.cs

@@ -0,0 +1,43 @@
+// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+#nullable disable
+
+namespace StyleCop.Analyzers.NamingRules
+{
+    using System.Collections.Immutable;
+    using System.Composition;
+    using System.Threading.Tasks;
+    using Microsoft.CodeAnalysis;
+    using Microsoft.CodeAnalysis.CodeActions;
+    using Microsoft.CodeAnalysis.CodeFixes;
+    using Microsoft.CodeAnalysis.CSharp;
+    using StyleCop.Analyzers.Helpers;
+
+    /// <summary>
+    /// Implements a code fix for <see cref="SA1317IdentifierShouldBeNamedOnlyWithLatinLetters"/>.
+    /// </summary>
+    /// <remarks>
+    /// <para>To fix a violation of this rule, replace non-Latin letters with appropriate Latin letters.</para>
+    /// </remarks>
+    [ExportCodeFixProvider(LanguageNames.CSharp, Name = nameof(SA1317CodeFixProvider))]
+    [Shared]
+    internal class SA1317CodeFixProvider : CodeFixProvider
+    {
+        /// <inheritdoc/>
+        public override ImmutableArray<string> FixableDiagnosticIds { get; } =
+          ImmutableArray.Create(SA1317IdentifierShouldBeNamedOnlyWithLatinLetters.DiagnosticId);
+
+        /// <inheritdoc/>
+        public override FixAllProvider GetFixAllProvider()
+        {
+            return null;
+        }
+
+        /// <inheritdoc/>
+        public override async Task RegisterCodeFixesAsync(CodeFixContext context)
+        {
+            await TaskHelper.CompletedTask.ConfigureAwait(false);
+        }
+    }
+}