O2 Script to show Roslyn Ast Error detection capabilities

gistfile1.cs

//var topPanel = panel.clear().add_Panel();
var topPanel = "Simple AstTester".popupWindow(700,300);
var codeViewer = topPanel.title("Code").add_SourceCodeViewer();
var errorsList = topPanel.insert_Right(300,"AstTree Errors").add_TextArea(); 				         
Action<string> showErrors =
	(newCode)=>{		
					codeViewer.editor().clearBookmarksAndMarkers();
					var astTree = newCode.tree();
					var errors = astTree.errors();
					foreach(var error in errors)
					{
						var startLinePosition = error.Location
													 .GetLineSpan(true)
													 .StartLinePosition;
						codeViewer.editor().setSelectedText(startLinePosition.Line +1, 
												   			startLinePosition.Character,
												   			true);								
					}
					errorsList.set_Text(astTree.errors_Details());
	};

var code = 
@"var a = 12;
this is an error

string b = 333;
aaaaaa-
class test
{
	public methodWithNoReturnType()
	{}
}";


codeViewer.onTextChange(showErrors)
		  .set_Text(code,".cs");

return "ok";

//O2Ref:O2_FluentSharp_Roslyn.dll
//O2Ref:Roslyn.Compilers.CSharp.dll
//O2Ref:Roslyn.Compilers.dll