source: branches/2893_BNLR/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/Resolver/Log.cs

// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;

namespace ICSharpCode.NRefactory.CSharp.Resolver
{
  /// <summary>
  /// Resolver logging helper.
  /// Wraps System.Diagnostics.Debug so that resolver-specific logging can be enabled/disabled on demand.
  /// (it's a huge amount of debug spew and slows down the resolver quite a bit)
  /// </summary>
  static class Log
  {
    const bool logEnabled = false;
#if __MonoCS__
    [Conditional("MCS_DEBUG")]
#else
    [Conditional(logEnabled ? "DEBUG" : "LOG_DISABLED")]
#endif
    internal static void WriteLine(string text)
    {
      Debug.WriteLine(text);
    }
    
#if __MonoCS__
    [Conditional("MCS_DEBUG")]
#else
    [Conditional(logEnabled ? "DEBUG" : "LOG_DISABLED")]
#endif
    internal static void WriteLine(string format, params object[] args)
    {
      Debug.WriteLine(format, args);
    }
    
#if __MonoCS__
    [Conditional("MCS_DEBUG")]
#else
    [Conditional(logEnabled ? "DEBUG" : "LOG_DISABLED")]
#endif
    internal static void WriteCollection<T>(string text, IEnumerable<T> lines)
    {
      #if DEBUG
      T[] arr = lines.ToArray();
      if (arr.Length == 0) {
        Debug.WriteLine(text + "<empty collection>");
      } else {
        Debug.WriteLine(text + (arr[0] != null ? arr[0].ToString() : "<null>"));
        for (int i = 1; i < arr.Length; i++) {
          Debug.WriteLine(new string(' ', text.Length) + (arr[i] != null ? arr[i].ToString() : "<null>"));
        }
      }
      #endif
    }
    
#if __MonoCS__
    [Conditional("MCS_DEBUG")]
#else
    [Conditional(logEnabled ? "DEBUG" : "LOG_DISABLED")]
#endif
    public static void Indent()
    {
      Debug.Indent();
    }
    
#if __MonoCS__
    [Conditional("MCS_DEBUG")]
#else
    [Conditional(logEnabled ? "DEBUG" : "LOG_DISABLED")]
#endif
    public static void Unindent()
    {
      Debug.Unindent();
    }
  }
}