ClassLibraryWeiBao/json引擎2/Serialization/ITraceWriter.cs

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using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace Newtonsoft.Json.Serialization
{
  /// <summary>
  /// Represents a trace writer.
  /// </summary>
  public interface ITraceWriter
  {
    /// <summary>
    /// Gets the <see cref="TraceLevel"/> that will be used to filter the trace messages passed to the writer.
    /// For example a filter level of <code>Info</code> will exclude <code>Verbose</code> messages and include <code>Info</code>,
    /// <code>Warning</code> and <code>Error</code> messages.
    /// </summary>
    /// <value>The <see cref="TraceLevel"/> that will be used to filter the trace messages passed to the writer.</value>
    TraceLevel LevelFilter { get; }

    /// <summary>
    /// Writes the specified trace level, message and optional exception.
    /// </summary>
    /// <param name="level">The <see cref="TraceLevel"/> at which to write this trace.</param>
    /// <param name="message">The trace message.</param>
    /// <param name="ex">The trace exception. This parameter is optional.</param>
    void Trace(TraceLevel level, string message, Exception ex);
  }
}