Add InjectAttributeCodeFixProvider

.editorconfig

@@ -231,6 +231,8 @@ csharp_preserve_single_line_statements = true
 # IDE0060: Remove unused parameter
 dotnet_diagnostic.IDE0060.severity = warning
 
+resharper_foreach_can_be_converted_to_query_using_another_get_enumerator_highlighting = none
+
 [src/{Compilers,ExpressionEvaluator,Scripting}/**Test**/*.{cs,vb}]
 
 # IDE0060: Remove unused parameter
@@ -279,6 +281,7 @@ dotnet_diagnostic.IDE2005.severity = warning
 # csharp_style_allow_blank_line_after_token_in_arrow_expression_clause_experimental
 dotnet_diagnostic.IDE2006.severity = warning
 
+
 [src/{VisualStudio}/**/*.{cs,vb}]
 # CA1822: Make member static
 # There is a risk of accidentally breaking an internal API that partners rely on though IVT.

VContainerAnalyzer.Test/FieldAnalyzerTest.cs

@@ -30,7 +30,7 @@ public async Task EmptySourceCode_NoDiagnosticReport()
     [Test]
     public async ValueTask Analyze_FieldInjection_ReportDiagnostic()
     {
-        var source = Helper.ReadCodes("FieldInjectionClass.cs", "EmptyClassStub.cs");
+        var source = Helper.GetFileContentTexts("FieldInjectionClass.cs", "EmptyClassStub.cs");
         var analyzer = new FieldAnalyzer();
         var diagnostics = await DiagnosticAnalyzerRunner.Run(analyzer, source);
 

VContainerAnalyzer.Test/Helper.cs

@@ -1,19 +1,24 @@
 // Copyright (c) 2020-2024 VeyronSakai.
 // This software is released under the MIT License.
 
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
 
 namespace VContainerAnalyzer.Test;
 
-public static class Helper
+internal static class Helper
 {
-    private const string VContainerDirectory = "VContainer";
+    private const string TestDataDirPath = "../../../TestData";
+    private const string VContainerDirectoryName = "VContainer";
 
     private static IEnumerable<string> VContainerSourcePaths { get; } =
-        GetVContainerFiles.Select(file => $"{Path.Combine(VContainerDirectory, file)}").ToArray();
+        GetVContainerFiles.Select(file => $"{Path.Combine(VContainerDirectoryName, file)}").ToArray();
 
     private static IEnumerable<string> GetVContainerFiles =>
     [
@@ -25,11 +30,30 @@ public static class Helper
         "InjectAttribute.cs",
     ];
 
-    public static string[] ReadCodes(params string[] sources)
+    internal static string[] GetFileContentTexts(params string[] sourcePaths)
     {
-        const string TestDataDirPath = "../../../TestData";
-        return sources
+        return sourcePaths
             .Concat(VContainerSourcePaths)
             .Select(file => File.ReadAllText($"{TestDataDirPath}/{file}", Encoding.UTF8)).ToArray();
     }
+
+    internal static string GetJoinedFilesContentText(params string[] sources)
+    {
+        var fileBodyBuilder = new StringBuilder();
+        var usingStatementsBuilder = new StringBuilder();
+
+        foreach (var filePath in sources.Concat(VContainerSourcePaths))
+        {
+            var fileContent = File.ReadAllText($"{TestDataDirPath}/{filePath}", Encoding.UTF8);
+            var tree = CSharpSyntaxTree.ParseText(fileContent);
+            var root = tree.GetRoot();
+            var usingDirectives = root.DescendantNodes().OfType<UsingDirectiveSyntax>().ToList();
+            var newRoot = root.RemoveNodes(usingDirectives, SyntaxRemoveOptions.KeepNoTrivia);
+            var usingStatements = string.Join(Environment.NewLine, usingDirectives.Select(u => u.ToFullString()));
+            fileBodyBuilder.Append(newRoot?.ToFullString());
+            usingStatementsBuilder.Append(usingStatements);
+        }
+
+        return usingStatementsBuilder.Append(fileBodyBuilder).ToString();
+    }
 }

VContainerAnalyzer.Test/InjectAttributeCodeFixProviderTest.cs

@@ -0,0 +1,27 @@
+// Copyright (c) 2020-2024 VeyronSakai.
+// This software is released under the MIT License.
+
+using System.Threading.Tasks;
+using NUnit.Framework;
+using Verify =
+    Microsoft.CodeAnalysis.CSharp.Testing.NUnit.CodeFixVerifier<VContainerAnalyzer.Analyzers.FieldAnalyzer,
+        VContainerAnalyzer.CodeFixProviders.InjectAttributeCodeFixProvider>;
+
+namespace VContainerAnalyzer.Test;
+
+[TestFixture]
+public class InjectAttributeCodeFixProviderTest
+{
+    [Test]
+    public async Task TypeNameContainingLowercase_CodeFixed()
+    {
+        var source = Helper.GetJoinedFilesContentText("FieldInjectionClass.cs", "EmptyClassStub.cs");
+        var fixedSource = Helper.GetJoinedFilesContentText("FieldInjectionClassFixed.txt", "EmptyClassStub.cs");
+
+        var expected = Verify.Diagnostic()
+            .WithSpan(22, 10, 22, 16)
+            .WithArguments("_field1");
+
+        await Verify.VerifyCodeFixAsync(source, expected, fixedSource);
+    }
+}

VContainerAnalyzer.Test/PropertyAnalyzerTest.cs

@@ -30,7 +30,7 @@ public async Task EmptySourceCode_NoDiagnosticReport()
     [Test]
     public async ValueTask Analyze_PropertyInjection_ReportDiagnostic()
     {
-        var source = Helper.ReadCodes("PropertyInjectionClass.cs", "EmptyClassStub.cs");
+        var source = Helper.GetFileContentTexts("PropertyInjectionClass.cs", "EmptyClassStub.cs");
         var analyzer = new PropertyAnalyzer();
         var diagnostics = await DiagnosticAnalyzerRunner.Run(analyzer, source);
 

VContainerAnalyzer.Test/TestData/FieldInjectionClassFixed.txt

@@ -0,0 +1,13 @@
+// Copyright (c) 2020-2024 VeyronSakai.
+// This software is released under the MIT License.
+
+using VContainer;
+
+namespace VContainerAnalyzer.Test.TestData
+{
+    public class FieldInjectionClass
+    {
+        private EmptyClassStub _field1;
+        private EmptyClassStub _field2;
+    }
+}

VContainerAnalyzer/CodeFixProviders/InjectAttributeCodeFixProvider.cs

@@ -0,0 +1,97 @@
+// Copyright (c) 2020-2024 VeyronSakai.
+// This software is released under the MIT License.
+
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Composition;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CodeActions;
+using Microsoft.CodeAnalysis.CodeFixes;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using SyntaxFactory = Microsoft.CodeAnalysis.CSharp.SyntaxFactory;
+
+namespace VContainerAnalyzer.CodeFixProviders;
+
+[ExportCodeFixProvider(LanguageNames.CSharp, Name = nameof(InjectAttributeCodeFixProvider)), Shared]
+public sealed class InjectAttributeCodeFixProvider : CodeFixProvider
+{
+    public override ImmutableArray<string> FixableDiagnosticIds { get; } = ImmutableArray.Create(Rules.Rule0002.Id);
+
+    public override FixAllProvider GetFixAllProvider()
+    {
+        return WellKnownFixAllProviders.BatchFixer;
+    }
+
+    public override async Task RegisterCodeFixesAsync(CodeFixContext context)
+    {
+        var root = await context
+            .Document
+            .GetSyntaxRootAsync(context.CancellationToken)
+            .ConfigureAwait(false);
+
+        var diagnostic = context.Diagnostics.First();
+        var diagnosticSpan = diagnostic.Location.SourceSpan;
+        var declaration = root?
+            .FindToken(diagnosticSpan.Start)
+            .Parent?
+            .AncestorsAndSelf()
+            .OfType<MemberDeclarationSyntax>()
+            .FirstOrDefault();
+
+        if (declaration == null)
+        {
+            return;
+        }
+
+        if (declaration is not FieldDeclarationSyntax && declaration is not PropertyDeclarationSyntax)
+        {
+            return;
+        }
+
+        context.RegisterCodeFix(
+            CodeAction.Create(
+                "Remove InjectAttribute",
+                cancellationToken =>
+                    RemoveInjectAttribute(context.Document, declaration, cancellationToken),
+                FixableDiagnosticIds.Single()),
+            context.Diagnostics);
+    }
+
+    private static async Task<Document> RemoveInjectAttribute(Document document, MemberDeclarationSyntax declaration,
+        CancellationToken cancellationToken)
+    {
+        var root = await document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
+        var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
+        var newAttributeLists = new List<AttributeListSyntax>();
+
+        foreach (var attributeList in declaration.AttributeLists)
+        {
+            var nodesToRemove = new List<AttributeSyntax>();
+
+            foreach (var attribute in attributeList.Attributes)
+            {
+                var attributeType = model?.GetTypeInfo(attribute).Type;
+                if (attributeType != null && attributeType.IsVContainerInjectAttribute())
+                {
+                    nodesToRemove.Add(attribute);
+                }
+            }
+
+            var newAttributes = attributeList.RemoveNodes(nodesToRemove, SyntaxRemoveOptions.KeepNoTrivia);
+            if (newAttributes.Attributes.Any())
+            {
+                newAttributeLists.Add(newAttributes);
+            }
+        }
+
+        var newDeclaration = declaration
+            .WithAttributeLists(SyntaxFactory.List(newAttributeLists))
+            .WithLeadingTrivia(declaration.GetLeadingTrivia());
+
+        var newRoot = root?.ReplaceNode(declaration, newDeclaration);
+        return newRoot == null ? document : document.WithSyntaxRoot(newRoot);
+    }
+}