CliFx/CliFx.Analyzers/AnalyzerBase.cs

using System.Collections.Immutable;
using CliFx.Analyzers.Utils.Extensions;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Diagnostics;

namespace CliFx.Analyzers
{
    public abstract class AnalyzerBase : DiagnosticAnalyzer
    {
        public DiagnosticDescriptor SupportedDiagnostic { get; }

        public sealed override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics { get; }

        protected AnalyzerBase(
            string diagnosticTitle,
            string diagnosticMessage,
            DiagnosticSeverity diagnosticSeverity = DiagnosticSeverity.Error)
        {
            SupportedDiagnostic = new DiagnosticDescriptor(
                "CliFx_" + GetType().Name.TrimEnd("Analyzer"),
                diagnosticTitle,
                diagnosticMessage,
                "CliFx",
                diagnosticSeverity,
                true
            );

            SupportedDiagnostics = ImmutableArray.Create(SupportedDiagnostic);
        }

        protected Diagnostic CreateDiagnostic(Location location) =>
            Diagnostic.Create(SupportedDiagnostic, location);

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