ConsoleDiagnosticFormatter.cs

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using System;
using System.Runtime.CompilerServices;
 
using IKVM.CoreLib.Diagnostics;
 
using Spectre.Console;
 
namespace IKVM.Tools.Core.Diagnostics
{
 
    class ConsoleDiagnosticFormatter : IDiagnosticFormatter
    {
 
        static readonly Markup TRACE = new Markup("[grey42]TRACE[/]");
        static readonly Markup INFO = new Markup("[silver]INFO[/]");
        static readonly Markup WARNING = new Markup("[yellow]WARNING[/]");
        static readonly Markup ERROR = new Markup("[maroon]ERROR[/]");
        static readonly Markup FATAL = new Markup("[red]FATAL[/]");
 
        readonly ConsoleDiagnosticFormatterOptions _options;
 
        public ConsoleDiagnosticFormatter(ConsoleDiagnosticFormatterOptions options)
        {
            _options = options ?? throw new ArgumentNullException(nameof(options));
        }
 
        public void Write(in DiagnosticEvent @event)
        {
            try
            {
                WriteDiagnosticEvent(@event);
            }
            catch (Exception e)
            {
                AnsiConsole.WriteException(e);
            }
        }
 
        protected virtual Markup WriteDiagnosticLevel(DiagnosticLevel level)
        {
            return level switch
            {
                DiagnosticLevel.Trace => TRACE,
                DiagnosticLevel.Info => INFO,
                DiagnosticLevel.Warning => WARNING,
                DiagnosticLevel.Error => ERROR,
                DiagnosticLevel.Fatal => FATAL,
                _ => throw new InvalidOperationException(),
            };
        }
 
        protected virtual void WriteDiagnosticCode(int code)
        {
            AnsiConsole.Write("IKVM");
            AnsiConsole.Write($"{code:D4}");
        }
 
        protected virtual void WriteDiagnosticMessage(string message, ReadOnlySpan<object?> args)
        {
            AnsiConsole.MarkupInterpolated(FormattableStringFactory.Create(message, args.ToArray()));
        }
 
        protected virtual void WriteDiagnosticEvent(in DiagnosticEvent @event)
        {
            WriteDiagnosticLevel(@event.Diagnostic.Level);
            AnsiConsole.Write(" ");
            WriteDiagnosticCode(@event.Diagnostic.Id);
            AnsiConsole.Write(": ");
            WriteDiagnosticMessage(@event.Diagnostic.Message, @event.Args);
            AnsiConsole.WriteLine();
 
            if (@event.Exception != null)
                AnsiConsole.WriteException(@event.Exception, ExceptionFormats.Default);
        }
 
    }
 
}