public ASTResult GetAST(string path)
{
string program = File.ReadAllText(path);
AntlrInputStream input = new AntlrInputStream(program);
QLMainLexer lexer = new QLMainLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
QLMainParser parser = new QLMainParser(tokens);
//remove standard Error Listener
parser.RemoveErrorListeners();
//Detect more errors (like ambiguousness errors)
//parser.AddErrorListener(new DiagnosticErrorListener());
//add standard error listener
parser.AddErrorListener(new ParserErrorListener());
IParseTree tree = parser.form();
Console.WriteLine(tree.ToStringTree(parser));
FormVisitor visitor = new FormVisitor();
Form ast = visitor.Visit(tree);
//TypeCheck.TypeChecker.GetTypeCheckDiagnosis(ast);
//Evaluate();
return(new ASTResult(ast));
}
