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CA1070: Do not use mutable struct in readonly field #3405

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CA1070: Do not use mutable struct in readonly field #3405

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dba9c99
CA1070: Do not use mutable struct in readonly field
Evangelink Mar 20, 2020
345fa15
Remove un-needed usings
Evangelink Mar 20, 2020
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62 changes: 62 additions & 0 deletions ...crosoft.CodeQuality.Analyzers/ApiDesignGuidelines/DoNotUseMutableStructInReadonlyField.cs
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// Copyright (c) Microsoft. All Rights Reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Collections.Immutable;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Diagnostics;
using Analyzer.Utilities;
using Analyzer.Utilities.Extensions;

namespace Microsoft.CodeQuality.Analyzers.ApiDesignGuidelines
{
[DiagnosticAnalyzer(LanguageNames.CSharp, LanguageNames.VisualBasic)]
public sealed class DoNotUseMutableStructInReadonlyField : DiagnosticAnalyzer
{
internal const string RuleId = "CA1070";

private static readonly LocalizableString s_localizableTitle = new LocalizableResourceString(nameof(MicrosoftCodeQualityAnalyzersResources.DoNotUseMutableStructInReadonlyFieldTitle), MicrosoftCodeQualityAnalyzersResources.ResourceManager, typeof(MicrosoftCodeQualityAnalyzersResources));
private static readonly LocalizableString s_localizableMessage = new LocalizableResourceString(nameof(MicrosoftCodeQualityAnalyzersResources.DoNotUseMutableStructInReadonlyFieldMessage), MicrosoftCodeQualityAnalyzersResources.ResourceManager, typeof(MicrosoftCodeQualityAnalyzersResources));
private static readonly LocalizableString s_localizableDescription = new LocalizableResourceString(nameof(MicrosoftCodeQualityAnalyzersResources.DoNotUseMutableStructInReadonlyFieldDescription), MicrosoftCodeQualityAnalyzersResources.ResourceManager, typeof(MicrosoftCodeQualityAnalyzersResources));

internal static DiagnosticDescriptor Rule =
DiagnosticDescriptorHelper.Create(
RuleId,
s_localizableTitle,
s_localizableMessage,
DiagnosticCategory.Design,
RuleLevel.BuildWarningCandidate,
s_localizableDescription,
isPortedFxCopRule: true,
isDataflowRule: false);

public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics { get; } = ImmutableArray.Create(Rule);

public override void Initialize(AnalysisContext analysisContext)
{
analysisContext.EnableConcurrentExecution();
analysisContext.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);

analysisContext.RegisterCompilationStartAction(context =>
{
var spinLockType = context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.SystemThreadingSpinLock);
var gcHandleType = context.Compilation.GetOrCreateTypeByMetadataName(WellKnownTypeNames.SystemRuntimeInteropServicesGCHandle);

context.RegisterSymbolAction(context =>
{
var field = (IFieldSymbol)context.Symbol;

if (!field.IsReadOnly ||
field.Type?.TypeKind != TypeKind.Struct)
{
return;
}

if (field.Type.Equals(spinLockType) ||
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Only looking at field type as @stephentoub was suggesting. We could make the rule more advanced and look at mutation calls rather than field definition.

field.Type.Equals(gcHandleType))
{
context.ReportDiagnostic(field.CreateDiagnostic(Rule));
}
}, SymbolKind.Field);
});
}
}
}
9 changes: 9 additions & 0 deletions ...nalyzers/Core/Microsoft.CodeQuality.Analyzers/MicrosoftCodeQualityAnalyzersResources.resx
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Expand Up @@ -1370,4 +1370,13 @@
<data name="EnumShouldNotHaveDuplicatedValuesTitle" xml:space="preserve">
<value>Enums values should not be duplicated</value>
</data>
<data name="DoNotUseMutableStructInReadonlyFieldDescription" xml:space="preserve">
<value>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</value>
</data>
<data name="DoNotUseMutableStructInReadonlyFieldMessage" xml:space="preserve">
<value>Do not use mutable struct in readonly field</value>
</data>
<data name="DoNotUseMutableStructInReadonlyFieldTitle" xml:space="preserve">
<value>Do not use mutable struct in readonly field</value>
</data>
</root>
15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.cs.xlf
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<target state="translated">Neukládejte asynchronní výrazy lambda jako typy delegátů vracející hodnotu Void.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">Odkaz na pole {0} je v této bitové inicializaci duplicitní.</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.de.xlf
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<target state="translated">Async-Lambdas nicht als "Void" zurückgebende Delegattypen speichern</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">Der Feldverweis "{0}" wird in dieser bitweisen Initialisierung dupliziert.</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.es.xlf
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<target state="translated">No almacenar expresiones lambda asincrónicas como void que devuelve tipos de delegado</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">La referencia de campo "{0}" está duplicada en esta inicialización bit a bit.</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.fr.xlf
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<target state="translated">Ne pas stocker de lambdas asynchrones en tant que types délégués retournant void</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">La référence de champ '{0}' est dupliquée dans cette initialisation au niveau du bit.</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.it.xlf
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<target state="translated">Non archiviare espressioni lambda asincrone come tipi delegati che restituiscono void</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">Il riferimento al campo '{0}' è duplicato in questa inizializzazione bit per bit.</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.ja.xlf
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<target state="translated">デリゲート型を返す Void として非同期ラムダを格納しないでください</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">フィールド参照 '{0}' は、このビット単位の初期化で重複しています。</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.ko.xlf
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<target state="translated">비동기 람다를 Void 반환 대리자 형식으로 저장하지 마세요.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">이 비트 초기화에서 필드 참조 '{0}'이(가) 중복되었습니다.</target>
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15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.pl.xlf
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<target state="translated">Nie przechowuj asynchronicznych wyrażeń lambda jako typów delegatów zwracających typ void</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">Odwołanie do pola „{0}” jest zduplikowane w tym inicjowaniu bitowym.</target>
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15 changes: 15 additions & 0 deletions ...Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.pt-BR.xlf
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<target state="translated">Não armazenar lambdas assíncronas como tipos delegados que retornam void</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">A referência de campo '{0}' está duplicada nesta inicialização bit a bit.</target>
Expand Down
15 changes: 15 additions & 0 deletions ...rs/Core/Microsoft.CodeQuality.Analyzers/xlf/MicrosoftCodeQualityAnalyzersResources.ru.xlf
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<target state="translated">Не храните асинхронные лямбда-выражения как Void, возвращающие типы делегатов</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldDescription">
<source>Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</source>
<target state="new">Making a mutable struct a readonly field can result in silent but significant problems as any mutatin to the instance will be done on a compiler-generated copy and thus ignored.</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldMessage">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="DoNotUseMutableStructInReadonlyFieldTitle">
<source>Do not use mutable struct in readonly field</source>
<target state="new">Do not use mutable struct in readonly field</target>
<note />
</trans-unit>
<trans-unit id="EnumShouldNotHaveDuplicatedValuesMessageDuplicatedBitwiseValuePart">
<source>The field reference '{0}' is duplicated in this bitwise initialization.</source>
<target state="translated">Ссылка на поле "{0}" дублируется в этой побитовой инициализации.</target>
Expand Down
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