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// 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 System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Diagnostics;
namespace Roslynator.CSharp.Analysis
{
[DiagnosticAnalyzer(LanguageNames.CSharp)]
public class RemoveRedundantBaseConstructorCallAnalyzer : BaseDiagnosticAnalyzer
{
public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics
{
get { return ImmutableArray.Create(DiagnosticDescriptors.RemoveRedundantBaseConstructorCall); }
}
public override void Initialize(AnalysisContext context)
{
if (context == null)
throw new ArgumentNullException(nameof(context));
base.Initialize(context);
context.RegisterSyntaxNodeAction(AnalyzeConstructorDeclaration, SyntaxKind.ConstructorDeclaration);
}
public static void AnalyzeConstructorDeclaration(SyntaxNodeAnalysisContext context)
{
var constructor = (ConstructorDeclarationSyntax)context.Node;
ConstructorInitializerSyntax initializer = constructor.Initializer;
if (initializer?.Kind() == SyntaxKind.BaseConstructorInitializer
&& initializer.ArgumentList?.Arguments.Count == 0
&& initializer
.DescendantTrivia(initializer.Span)
.All(f => f.IsWhitespaceOrEndOfLineTrivia()))
{
DiagnosticHelpers.ReportDiagnostic(context,
DiagnosticDescriptors.RemoveRedundantBaseConstructorCall,
initializer);
}
}
}
}
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