using System; using System.Collections.Generic; using System.Diagnostics; namespace Newtonsoft.Json.Serialization { /// <summary> /// Represents a trace writer. /// </summary> internal 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 <see cref="TraceLevel.Info"/> will exclude <see cref="TraceLevel.Verbose"/> messages and include <see cref="TraceLevel.Info"/>, /// <see cref="TraceLevel.Warning"/> and <see cref="TraceLevel.Error"/> 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); } }