FormattedDiagnosticHandler.cs

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using System;
 
using IKVM.CoreLib.Diagnostics;
 
namespace IKVM.Tools.Core.Diagnostics
{
 
    class FormattedDiagnosticHandler : DiagnosticEventHandler, IDisposable
    {
 
        readonly string _spec;
        readonly DiagnosticFormatterProvider _formatters;
        readonly IDiagnosticFormatter _formatter;
 
        public FormattedDiagnosticHandler(string spec, DiagnosticFormatterProvider formatters)
        {
            _spec = spec ?? throw new ArgumentNullException(nameof(spec));
            _formatters = formatters ?? throw new ArgumentNullException(nameof(formatters));
            _formatter = _formatters.GetFormatter(spec) ?? throw new InvalidOperationException("Cannot find formatter for specification.");
        }
 
        public override bool IsEnabled(Diagnostic diagnostic)
        {
            return true;
        }
 
        public override void Report(in DiagnosticEvent @event)
        {
            if (IsEnabled(@event.Diagnostic))
                _formatter.Write(@event);
        }
 
        public virtual void Dispose()
        {
            if (_formatter is IDisposable disposable)
                disposable.Dispose();
        }
 
    }
 
}