Error when users use a file type for things we need to load

src/Microsoft.CodeAnalysis.Analyzers/Core/AnalyzerReleases.Unshipped.md

@@ -7,3 +7,4 @@ Rule ID | Category | Severity | Notes
 RS1038 | MicrosoftCodeAnalysisCorrectness | Warning | CompilerExtensionStrictApiAnalyzer
 RS1041 | MicrosoftCodeAnalysisCorrectness | Warning | CompilerExtensionTargetFrameworkAnalyzer, [Documentation](https://github.com/dotnet/roslyn-analyzers/blob/main/docs/rules/RS1041.md)
 RS1042 | MicrosoftCodeAnalysisCompatibility | Error | ImplementationIsObsoleteAnalyzer
+RS1043 | MicrosoftCodeAnalysisCorrectness | Error | DoNotUseFileTypesForAnalyzersOrGenerators

src/Microsoft.CodeAnalysis.Analyzers/Core/CodeAnalysisDiagnosticsResources.resx

@@ -605,4 +605,13 @@
   <data name="ImplementationIsObsoleteTitle" xml:space="preserve">
     <value>Implementations of this interface are not allowed</value>
   </data>
+  <data name="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription" xml:space="preserve">
+    <value>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</value>
+  </data>
+  <data name="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage" xml:space="preserve">
+    <value>Type '{0}' should not be marked with 'file'</value>
+  </data>
+  <data name="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle" xml:space="preserve">
+    <value>Do not use file types for implementing analyzers, generators, and code fixers</value>
+  </data>
 </root>

src/Microsoft.CodeAnalysis.Analyzers/Core/DiagnosticIds.cs

@@ -46,6 +46,7 @@ internal static class DiagnosticIds
         public const string SemanticModelGetDeclaredSymbolAlwaysReturnsNullForField = "RS1040";
         public const string DoNotRegisterCompilerTypesWithBadTargetFrameworkRuleId = "RS1041";
         public const string ImplementationIsObsoleteRuleId = "RS1042";
+        public const string DoNotUseFileTypesForAnalyzersOrGenerators = "RS1043";
 
         // Release tracking analyzer IDs
         public const string DeclareDiagnosticIdInAnalyzerReleaseRuleId = "RS2000";

src/Microsoft.CodeAnalysis.Analyzers/Core/MetaAnalyzers/DoNotUseFileTypesForAnalyzersOrGenerators.cs

@@ -0,0 +1,67 @@
+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the MIT license.  See License.txt in the project root for license information.
+
+using System.Collections.Immutable;
+using Analyzer.Utilities;
+using Analyzer.Utilities.Extensions;
+using Microsoft.CodeAnalysis.Diagnostics;
+
+namespace Microsoft.CodeAnalysis.Analyzers.MetaAnalyzers
+{
+    using static CodeAnalysisDiagnosticsResources;
+
+    [DiagnosticAnalyzer(LanguageNames.CSharp, LanguageNames.VisualBasic)]
+    public sealed class DoNotUseFileTypesForAnalyzersOrGenerators : DiagnosticAnalyzer
+    {
+        private static readonly DiagnosticDescriptor Rule = new(
+            DiagnosticIds.DoNotUseFileTypesForAnalyzersOrGenerators,
+            CreateLocalizableResourceString(nameof(DoNotUseFileTypesForAnalyzersOrGeneratorsTitle)),
+            CreateLocalizableResourceString(nameof(DoNotUseFileTypesForAnalyzersOrGeneratorsMessage)),
+            DiagnosticCategory.MicrosoftCodeAnalysisCorrectness,
+            DiagnosticSeverity.Error,
+            isEnabledByDefault: true,
+            description: CreateLocalizableResourceString(nameof(DoNotUseFileTypesForAnalyzersOrGeneratorsDescription)));
+
+        public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics { get; } = ImmutableArray.Create(Rule);
+
+        public override void Initialize(AnalysisContext context)
+        {
+            context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);
+            context.EnableConcurrentExecution();
+            context.RegisterCompilationStartAction(context =>
+            {
+                INamedTypeSymbol? diagnosticAnalyzer = context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.MicrosoftCodeAnalysisDiagnosticsDiagnosticAnalyzer);
+                if (diagnosticAnalyzer == null)
+                {
+                    // Does not contain any diagnostic analyzers.
+                    return;
+                }
+
+                // There may or may not be a code fix provider type and generator types, depending on what this assembly depends on.
+                INamedTypeSymbol? codeFixProvider = context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.MicrosoftCodeAnalysisCodeFixesCodeFixProvider);
+                INamedTypeSymbol? isourceGenerator = context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.MicrosoftCodeAnalysisISourceGenerator);
+                INamedTypeSymbol? iincrementalGenerator = context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.MicrosoftCodeAnalysisIIncrementalGenerator);
+
+                context.RegisterSymbolAction(symbolContext => AnalyzeSymbol(symbolContext, diagnosticAnalyzer, codeFixProvider, isourceGenerator, iincrementalGenerator), SymbolKind.NamedType);
+            });
+        }
+
+        private static void AnalyzeSymbol(SymbolAnalysisContext context, INamedTypeSymbol diagnosticAnalyzer, INamedTypeSymbol? codeFixProvider, INamedTypeSymbol? isourceGenerator, INamedTypeSymbol? iincrementalGenerator)
+        {
+            var namedTypeSymbol = (INamedTypeSymbol)context.Symbol;
+
+            if (!namedTypeSymbol.IsFileLocal())
+            {
+                return;
+            }
+
+            if (namedTypeSymbol.Inherits(diagnosticAnalyzer) ||
+                namedTypeSymbol.Inherits(codeFixProvider) ||
+                namedTypeSymbol.Inherits(isourceGenerator) ||
+                namedTypeSymbol.Inherits(iincrementalGenerator))
+            {
+                var diagnostic = Diagnostic.Create(Rule, namedTypeSymbol.Locations[0], namedTypeSymbol.Name);
+                context.ReportDiagnostic(diagnostic);
+            }
+        }
+    }
+}

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.cs.xlf

@@ -172,6 +172,21 @@
         <target state="translated">Nevolejte metodu Compilation.GetSemanticModel() v diagnostickém analyzátoru</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">Hodnoty DiagnosticId pro analyzátory by neměly používat rezervovaná ID.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.de.xlf

@@ -172,6 +172,21 @@
         <target state="translated">Compilation.GetSemanticModel()-Methode nicht innerhalb eines Diagnoseanalysetools aufrufen</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">Die DiagnosticId für Analysetools darf keine reservierten IDs verwenden.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.es.xlf

@@ -172,6 +172,21 @@
         <target state="translated">No invoque el método Compilation.GetSemanticModel() en un analizador de diagnóstico</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">El valor DiagnosticId para los analizadores no debe usar identificadores reservados.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.fr.xlf

@@ -172,6 +172,21 @@
         <target state="translated">N'appelez pas la méthode Compilation.GetSemanticModel() dans un analyseur de diagnostic</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">DiagnosticId pour les analyseurs ne doit pas utiliser d'ID réservés.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.it.xlf

@@ -172,6 +172,21 @@
         <target state="translated">Non richiamare il metodo Compilation.GetSemanticModel() in un analizzatore diagnostico</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">L'ID diagnostica per gli analizzatori non deve usare ID riservati.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.ja.xlf

@@ -172,6 +172,21 @@
         <target state="translated">診断アナライザー内での Compilation.GetSemanticModel() メソッドの呼び出し禁止</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">アナライザーの診断 ID には、予約済み ID を使用しないでください。</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.ko.xlf

@@ -172,6 +172,21 @@
         <target state="translated">진단 분석기 내에서 Compilation.GetSemanticModel() 메서드를 호출하지 마세요.</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">분석기의 DiagnosticId에는 예약된 ID를 사용해서는 안 됩니다.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.pl.xlf

@@ -172,6 +172,21 @@
         <target state="translated">Nie wywołuj metody Compilation.GetSemanticModel() w analizatorze diagnostycznym</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">W elemencie DiagnosticId dla analizatorów nie należy używać zastrzeżonych identyfikatorów.</target>

src/Microsoft.CodeAnalysis.Analyzers/Core/xlf/CodeAnalysisDiagnosticsResources.pt-BR.xlf

@@ -172,6 +172,21 @@
         <target state="translated">Não invocar o método Compilation.GetSemanticModel() em um analisador de diagnóstico</target>
         <note />
       </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsDescription">
+        <source>Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</source>
+        <target state="new">Using a 'file' type is not allowed for implementing analyzers, generators, or code fixers. This can break analyzer loading on some platforms.</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsMessage">
+        <source>Type '{0}' should not be marked with 'file'</source>
+        <target state="new">Type '{0}' should not be marked with 'file'</target>
+        <note />
+      </trans-unit>
+      <trans-unit id="DoNotUseFileTypesForAnalyzersOrGeneratorsTitle">
+        <source>Do not use file types for implementing analyzers, generators, and code fixers</source>
+        <target state="new">Do not use file types for implementing analyzers, generators, and code fixers</target>
+        <note />
+      </trans-unit>
       <trans-unit id="DoNotUseReservedDiagnosticIdDescription">
         <source>DiagnosticId for analyzers should not use reserved IDs.</source>
         <target state="translated">A DiagnosticId dos analisadores não deve usar IDs reservadas.</target>