我创建了一个新的“带有代码修复（.NET标准）的分析器”项目，并更新了分析器以检查我想要的内容，并且效果很好。现在，我已经修改了CodeFixProvider，但是在调试时它从未显示。
我已经在FixableDiagnosticIds，GetFixAllProvider()和RegisterCodeFixesAsync(CodeFixContext context)的吸气剂中设置了断点，但是当我单击分析仪正确标记的行上的“灯泡”时，都不会调用任何断点。
关于如何弄清为什么它没有被调用的任何想法？
在“带有代码修复（.NET标准）的分析器创建的默认项目中，正确调用了这3个地方的断点。
我的分析器代码
using System.Collections.Immutable;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Diagnostics;
namespace InAnalyzer
{
[DiagnosticAnalyzer(LanguageNames.CSharp)]
public class InAnalyzerAnalyzer : DiagnosticAnalyzer
{
public const string CanBeInvokedWithInDiagnosticId = "IN3001";
public const string DoNotUseInWithParameterDiagnosticId = "IN3002";
public const string UseInWithParameterDiagnosticId = "IN3003";
private const string CanBeInvokedWithInCategory = "Performance";
private const string DoNotUseInWithParameterCategory = "Performance";
private const string UseInWithParameterCategory = "Performance";
private static readonly LocalizableString CanBeInvokedWithInTitle = new LocalizableResourceString(nameof(Resources.CanBeInvokedWithInAnalyzerTitle), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString DoNotUseInWithParameterTitle = new LocalizableResourceString( nameof(Resources.DoNotUseInWithParameterAnalyzerTitle), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString UseInWithParameterTitle = new LocalizableResourceString( nameof(Resources.UseInWithParameterAnalyzerTitle), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString CanBeInvokedWithInMessageFormat = new LocalizableResourceString(nameof(Resources.CanBeInvokedWithInAnalyzerMessageFormat), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString DoNotUseInWithParameterMessageFormat = new LocalizableResourceString(nameof(Resources.DoNotUseInWithParameterAnalyzerMessageFormat), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString UseInWithParameterMessageFormat = new LocalizableResourceString(nameof(Resources.UseInWithParameterAnalyzerMessageFormat), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString CanBeInvokedWithInDescription = new LocalizableResourceString(nameof(Resources.CanBeInvokedWithInAnalyzerDescription), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString DoNotUseInWithParameterDescription = new LocalizableResourceString(nameof(Resources.DoNotUseInWithParameterAnalyzerDescription), Resources.ResourceManager, typeof(Resources));
private static readonly LocalizableString UseInWithParameterDescription = new LocalizableResourceString(nameof(Resources.UseInWithParameterAnalyzerDescription), Resources.ResourceManager, typeof(Resources));
private static readonly DiagnosticDescriptor CanBeInvokedWithInRule = new DiagnosticDescriptor(
CanBeInvokedWithInDiagnosticId,
CanBeInvokedWithInTitle,
CanBeInvokedWithInMessageFormat,
CanBeInvokedWithInCategory,
DiagnosticSeverity.Warning,
isEnabledByDefault: true,
CanBeInvokedWithInDescription);
private static readonly DiagnosticDescriptor DoNotUseInWithParameterRule = new DiagnosticDescriptor(
DoNotUseInWithParameterDiagnosticId,
DoNotUseInWithParameterTitle,
DoNotUseInWithParameterMessageFormat,
DoNotUseInWithParameterCategory,
DiagnosticSeverity.Warning,
isEnabledByDefault: true,
DoNotUseInWithParameterDescription);
private static readonly DiagnosticDescriptor UseInWithParameterRule = new DiagnosticDescriptor(
UseInWithParameterDiagnosticId,
UseInWithParameterTitle,
UseInWithParameterMessageFormat,
UseInWithParameterCategory,
DiagnosticSeverity.Warning,
isEnabledByDefault: true,
UseInWithParameterDescription);
public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics
=> ImmutableArray.Create(CanBeInvokedWithInRule, DoNotUseInWithParameterRule, UseInWithParameterRule);
public override void Initialize(AnalysisContext context)
{
context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.Analyze | GeneratedCodeAnalysisFlags.ReportDiagnostics);
context.EnableConcurrentExecution();
context.RegisterSyntaxNodeAction(AnalyzeInvocationExpressionSyntaxNode, SyntaxKind.InvocationExpression);
context.RegisterSyntaxNodeAction(AnalyzeMethodDeclarationSyntaxNode, SyntaxKind.MethodDeclaration);
}
private static void AnalyzeInvocationExpressionSyntaxNode(SyntaxNodeAnalysisContext context)
{
var node = (InvocationExpressionSyntax) context.Node;
var symbol = context.SemanticModel.GetSymbolInfo(node).Symbol ??
context.SemanticModel.GetDeclaredSymbol(node);
if (symbol is IMethodSymbol methodSymbol)
{
var parametersSymbol = methodSymbol.Parameters;
var argumentSyntaxList = node?.ArgumentList.Arguments;
if (argumentSyntaxList != null)
{
var argumentSyntaxes = argumentSyntaxList.Value;
for (var index = 0; index < parametersSymbol.Length; index++)
{
var parameterSymbol = parametersSymbol[index];
if (parameterSymbol.RefKind == RefKind.In &&
parameterSymbol.Type.IsReadOnly &&
parameterSymbol.Type.IsValueType &&
index < argumentSyntaxes.Count)
{
var argumentSyntax = argumentSyntaxes[index];
if (argumentSyntax?.RefKindKeyword.IsKind(SyntaxKind.InKeyword) == false)
{
var diagnostic = Diagnostic.Create(
CanBeInvokedWithInRule,
argumentSyntax.Expression.GetLocation(),
parameterSymbol.Name,
parameterSymbol.Type);
context.ReportDiagnostic(diagnostic);
}
}
}
}
}
}
private static void AnalyzeMethodDeclarationSyntaxNode(SyntaxNodeAnalysisContext context)
{
var node = (MethodDeclarationSyntax) context.Node;
var parameterSyntaxList = node?.ParameterList.Parameters;
if (parameterSyntaxList != null)
{
var parameterSyntaxes = parameterSyntaxList.Value;
for (var index = 0; index < parameterSyntaxes.Count; index++)
{
var parameterSyntax = parameterSyntaxes[index];
if (parameterSyntax != null)
{
var symbol = context.SemanticModel.GetSymbolInfo(parameterSyntax.Type).Symbol;
if (symbol is ITypeSymbol typeSymbol)
{
if (typeSymbol.IsReadOnly &&
typeSymbol.IsValueType)
{
if (!parameterSyntax.Modifiers.Any(SyntaxKind.InKeyword))
{
var diagnostic = Diagnostic.Create(
UseInWithParameterRule,
parameterSyntax.Identifier.GetLocation(),
parameterSyntax.Identifier,
typeSymbol);
context.ReportDiagnostic(diagnostic);
}
}
else
{
foreach (var modifier in parameterSyntax.Modifiers)
{
if (modifier.Kind() == SyntaxKind.InKeyword)
{
var diagnostic = Diagnostic.Create(
DoNotUseInWithParameterRule,
modifier.GetLocation(),
parameterSyntax.Identifier,
typeSymbol);
context.ReportDiagnostic(diagnostic);
}
}
}
}
}
}
}
}
}
}
我的CodeFixProvider（可能不完整和正确；我想调试并使其正常运行，但甚至无法尝试运行它：）：
using System.Collections.Immutable;
using System.Composition;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CodeActions;
using Microsoft.CodeAnalysis.CodeFixes;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Editing;
namespace InAnalyzer
{
[ExportCodeFixProvider(LanguageNames.CSharp, Name = nameof(InAnalyzerCodeFixProvider)), Shared]
public class InAnalyzerCodeFixProvider : CodeFixProvider
{
private const string AddInModifierTitle = "Add 'in' modifier";
private const string RemoveInModifierTitle = "Remove 'in' modifier";
public sealed override ImmutableArray<string> FixableDiagnosticIds
=> ImmutableArray.Create(
InAnalyzerAnalyzer.CanBeInvokedWithInDiagnosticId,
InAnalyzerAnalyzer.DoNotUseInWithParameterDiagnosticId,
InAnalyzerAnalyzer.UseInWithParameterDiagnosticId);
public sealed override FixAllProvider GetFixAllProvider()
{
return WellKnownFixAllProviders.BatchFixer;
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
var token = root.FindToken(context.Span.Start);
if (!token.Span.IntersectsWith(context.Span))
{
return;
}
var generator = SyntaxGenerator.GetGenerator(context.Document);
var node = generator.GetDeclaration(token.Parent);
if (node == null)
{
return;
}
foreach (var diagnostic in context.Diagnostics)
{
switch (diagnostic.Id)
{
case InAnalyzerAnalyzer.CanBeInvokedWithInDiagnosticId:
case InAnalyzerAnalyzer.UseInWithParameterDiagnosticId:
context.RegisterCodeFix(
CodeAction.Create(
AddInModifierTitle,
c => AddInModifierAsync(context.Document, node, c),
AddInModifierTitle),
diagnostic);
break;
case InAnalyzerAnalyzer.DoNotUseInWithParameterDiagnosticId:
context.RegisterCodeFix(
CodeAction.Create(
RemoveInModifierTitle,
c => RemoveInModifierAsync(context.Document, node, c),
RemoveInModifierTitle),
diagnostic);
break;
}
}
}
private async Task<Document> AddInModifierAsync(
Document document,
SyntaxNode node,
CancellationToken cancellationToken)
{
var editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
switch (node.Parent)
{
case ArgumentSyntax argumentSyntax:
editor.ReplaceNode(
argumentSyntax,
argumentSyntax.WithRefKindKeyword(SyntaxFactory.Token(SyntaxKind.InKeyword)));
break;
case ParameterSyntax parameterSyntax:
editor.ReplaceNode(
parameterSyntax,
parameterSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.InKeyword)));
break;
}
return editor.GetChangedDocument();
}
private async Task<Document> RemoveInModifierAsync(
Document document,
SyntaxNode node,
CancellationToken cancellationToken)
{
var editor = await DocumentEditor.CreateAsync(document, cancellationToken).ConfigureAwait(false);
////switch (node.Parent)
////{
//// case ArgumentSyntax argumentSyntax:
//// editor.ReplaceNode(
//// argumentSyntax,
//// argumentSyntax.WithRefKindKeyword(SyntaxFactory.Token(SyntaxKind.InKeyword)));
//// break;
//// case ParameterSyntax parameterSyntax:
//// editor.ReplaceNode(
//// parameterSyntax,
//// parameterSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.InKeyword)));
//// break;
////}
return editor.GetChangedDocument();
}
}
}
[找到指向this的the CreateExpInstance tool之后，我尝试重置后缀为“ Roslyn”的实验实例。那并不能解决我的问题，但是后来我删除了带有“ Roslyn”后缀的实验实例，然后尝试再次调试VSIX。这次，调试我的VSIX正常工作并显示了我的CodeFixProvider。
rd / s / q“％LOCALAPPDATA％\ Microsoft \ VisualStudio \ 16.0_0f71fe5bRoslyn”