Permalink
Fetching contributors…
Cannot retrieve contributors at this time
54 lines (40 sloc) 1.81 KB
// Copyright (c) Josef Pihrt. All rights reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections.Immutable;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Text;
namespace Roslynator.CSharp.Analysis
{
[DiagnosticAnalyzer(LanguageNames.CSharp)]
public class AddNewLineAfterSwitchLabelAnalyzer : BaseDiagnosticAnalyzer
{
public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics
{
get { return ImmutableArray.Create(DiagnosticDescriptors.AddNewLineAfterSwitchLabel); }
}
public override void Initialize(AnalysisContext context)
{
if (context == null)
throw new ArgumentNullException(nameof(context));
base.Initialize(context);
context.RegisterSyntaxNodeAction(AnalyzeSwitchSection, SyntaxKind.SwitchSection);
}
public static void AnalyzeSwitchSection(SyntaxNodeAnalysisContext context)
{
var switchSection = (SwitchSectionSyntax)context.Node;
SyntaxList<StatementSyntax> statements = switchSection.Statements;
if (!statements.Any())
return;
SyntaxList<SwitchLabelSyntax> labels = switchSection.Labels;
if (!labels.Any())
return;
StatementSyntax statement = statements.First();
if (!switchSection.SyntaxTree.IsSingleLineSpan(TextSpan.FromBounds(labels.Last().Span.End, statement.SpanStart)))
return;
context.ReportDiagnostic(DiagnosticDescriptors.AddNewLineAfterSwitchLabel, statement);
}
}
}