DiagnosticFormatterProvider.cs

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using System;
using System.Collections.Generic;
using System.Linq;
 
namespace IKVM.Tools.Core.Diagnostics
{
 
    class DiagnosticFormatterProvider
    {
 
        readonly IEnumerable<IDiagnosticFormatterFactory> _factories;
 
        public DiagnosticFormatterProvider(IEnumerable<IDiagnosticFormatterFactory> factories)
        {
            _factories = factories ?? throw new ArgumentNullException(nameof(factories));
        }
 
        public IDiagnosticFormatter? GetFormatter(string spec)
        {
            return _factories.Select(i => i.GetFormatter(spec)).FirstOrDefault(i => i != null);
        }
 
    }
 
}