Permalink
Fetching contributors…
Cannot retrieve contributors at this time
44 lines (35 sloc) 1.55 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;
namespace Roslynator.CSharp.Analysis
{
[DiagnosticAnalyzer(LanguageNames.CSharp)]
public class UseVarInForEachAnalyzer : BaseDiagnosticAnalyzer
{
public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics
{
get { return ImmutableArray.Create(DiagnosticDescriptors.UseVarInsteadOfExplicitTypeInForEach); }
}
public override void Initialize(AnalysisContext context)
{
if (context == null)
throw new ArgumentNullException(nameof(context));
base.Initialize(context);
context.RegisterSyntaxNodeAction(AnalyzeForEachStatement, SyntaxKind.ForEachStatement);
}
private static void AnalyzeForEachStatement(SyntaxNodeAnalysisContext context)
{
var forEachStatement = (ForEachStatementSyntax)context.Node;
TypeAnalysis analysis = TypeAnalysis.AnalyzeType(forEachStatement, context.SemanticModel);
if (analysis.IsExplicit
&& analysis.SupportsImplicit)
{
context.ReportDiagnostic(DiagnosticDescriptors.UseVarInsteadOfExplicitTypeInForEach, forEachStatement.Type);
}
}
}
}