ConditionMessageExpression.cs

// 
// Copyright (c) 2004-2011 Jaroslaw Kowalski <jaak@jkowalski.net>
// 
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namespace NLog.Conditions
{
    /// <summary>
    /// Condition message expression (represented by the <b>message</b> keyword).
    /// </summary>
    internal sealed class ConditionMessageExpression : ConditionExpression
    {
        /// <summary>
        /// Returns a string representation of this expression.
        /// </summary>
        /// <returns>The '<b>message</b>' string.</returns>
        public override string ToString()
        {
            return "message";
        }

        /// <summary>
        /// Evaluates to the logger message.
        /// </summary>
        /// <param name="context">Evaluation context.</param>
        /// <returns>The logger message.</returns>
        protected override object EvaluateNode(LogEventInfo context)
        {
            return context.FormattedMessage;
        }
    }
}