// /**
// ********
// *
// * ORIGINAL CODE BASE IS Copyright (C) 2006-2010 by Alphons van der Heijden
// * The code was donated on 4/28/2010 by Alphons van der Heijden
// * To Brandon 'Dimentox Travanti' Husbands & Malcolm J. Kudra, who in turn License under the GPLv2.
// * In agreement with Alphons van der Heijden's wishes.
// *
// * The community would like to thank Alphons for all of his hard work, blood sweat and tears.
// * Without his work the community would be stuck with crappy editors.
// *
// * The source code in this file ("Source Code") is provided by The LSLEditor Group
// * to you under the terms of the GNU General Public License, version 2.0
// * ("GPL"), unless you have obtained a separate licensing agreement
// * ("Other License"), formally executed by you and The LSLEditor Group.  Terms of
// * the GPL can be found in the gplv2.txt document.
// *
// ********
// * GPLv2 Header
// ********
// * LSLEditor, a External editor for the LSL Language.
// * Copyright (C) 2010 The LSLEditor Group.
// 
// * This program is free software; you can redistribute it and/or
// * modify it under the terms of the GNU General Public License
// * as published by the Free Software Foundation; either version 2
// * of the License, or (at your option) any later version.
// *
// * This program is distributed in the hope that it will be useful,
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// * GNU General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program; if not, write to the Free Software
// * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
// ********
// *
// * The above copyright notice and this permission notice shall be included in all 
// * copies or substantial portions of the Software.
// *
// ********
// */
using System;
using System.IO;
using System.Reflection;
using System.Windows.Forms;
using System.CodeDom.Compiler;
using Microsoft.CSharp;

namespace LSLEditor.Helpers
{
	class CompilerHelper
	{
		private static int FindDefaultLineNumber(string strCode)
		{
			StringReader sr = new StringReader(strCode);
			int intI = 0;
			while (true)
			{
				string strLine = sr.ReadLine();
				if (strLine == null)
					break;
				if (strLine.StartsWith("class State_default"))
					return intI;
				intI++;
			}
			return intI;
		}

		public static Assembly CompileCSharp(EditForm editForm, string CSharpCode)
		{
			// Code compiler and provider
			CodeDomProvider cc = new CSharpCodeProvider();

			// Compiler parameters
			CompilerParameters cp = new CompilerParameters();

			// Sept 15, 2007 -> 3, 30 oct 2007 -> 4
			if(!Properties.Settings.Default.SkipWarnings)
				cp.WarningLevel = 4;

			// Add common assemblies
			cp.ReferencedAssemblies.Add("System.dll");
			cp.ReferencedAssemblies.Add("System.Windows.Forms.dll");

			// LSLEditor.exe contains all base SecondLife class stuff
			cp.ReferencedAssemblies.Add(Assembly.GetExecutingAssembly().Location);

			// Compiling to memory
			cp.GenerateInMemory = true;

			// Does this work?
			cp.IncludeDebugInformation = true;

			// Wrap strCSharpCode into my namespace
			string strRunTime = "namespace LSLEditor\n{\n";
			strRunTime += CSharpCode;
			strRunTime += "\n}\n";

			int intDefaultLineNumber = FindDefaultLineNumber(strRunTime);

			// Here we go
			CompilerResults cr = cc.CompileAssemblyFromSource(cp, strRunTime);

			// get the listview to store some errors
			ListView ListViewErrors = editForm.parent.SyntaxErrors.ListView;

			// Console.WriteLine(cr.Errors.HasWarnings.ToString());
			// Check for compilation errors...
			if (ListViewErrors != null && (cr.Errors.HasErrors || cr.Errors.HasWarnings))
			{
				int intNr = 1;
				foreach (CompilerError err in cr.Errors)
				{
					int intLine = err.Line;
					if (intLine < intDefaultLineNumber)
						intLine -= 4;
					else
						intLine -= 5;
					string strError = OopsFormatter.ApplyFormatting(err.ErrorText);
					int intImageIndex = 0;
					if (err.IsWarning)
						intImageIndex = 1;
					ListViewItem lvi = new ListViewItem(new string[] {
						"",						// 0
						intNr.ToString(),		// 1
						strError,				// 2
						editForm.ScriptName,	// 3
						intLine.ToString(),		// 4
						err.Column.ToString(),	// 5
						editForm.ProjectName ,	// 6
						editForm.FullPathName,	// 7
						editForm.guid.ToString(),// 8
						editForm.IsScript.ToString()// 9
							} , intImageIndex);
					ListViewErrors.Items.Add(lvi);
					intNr++;
				}
				return null;
			}
			return cr.CompiledAssembly;
		}
	}
}