public static (IParseTree, Parser, Lexer) Try(string input)
{
var str = new AntlrInputStream(input);
var lexer = new XMLLexer(str);
var tokens = new CommonTokenStream(lexer);
var parser = new XMLParser(tokens);
var listener = new ErrorListener <IToken>(parser, lexer, tokens);
parser.AddErrorListener(listener);
var tree = parser.document();
if (listener.had_error)
{
System.Console.Error.WriteLine("error in parse.");
}
else
{
System.Console.Error.WriteLine("parse completed.");
}
System.Console.Error.WriteLine(tokens.OutputTokens(lexer));
System.Console.Error.WriteLine(tree.OutputTree(tokens));
return(tree, parser, lexer);
}