static void Try(string input)
{
var str = new AntlrInputStream(input);
System.Console.WriteLine(input);
var lexer = new arithmeticLexer(str);
var tokens = new CommonTokenStream(lexer);
var parser = new arithmeticParser(tokens);
var listener_lexer = new ErrorListener <int>();
var listener_parser = new ErrorListener <IToken>();
lexer.AddErrorListener(listener_lexer);
parser.AddErrorListener(listener_parser);
var tree = parser.file();
if (listener_lexer.had_error || listener_parser.had_error)
{
System.Console.WriteLine("error in parse.");
}
else
{
System.Console.WriteLine("parse completed.");
}
System.Console.WriteLine(tree.ToStringTree());
Decorate(tree, parser);
System.Console.WriteLine(tree.ToStringTree());
}
static void Try(string input)
{
var str = new AntlrInputStream(input);
var lexer = new arithmeticLexer(str);
var tokens = new CommonTokenStream(lexer);
var parser = new arithmeticParser(tokens);
var listener = new ErrorListener <IToken>(parser, lexer, tokens);
parser.AddErrorListener(listener);
var tree = parser.file();
if (listener.had_error)
{
System.Console.WriteLine("error in parse.");
System.Console.WriteLine(tokens.OutputTokens());
System.Console.WriteLine(tree.OutputTree(tokens));
}
else
{
System.Console.WriteLine("parse completed.");
System.Console.WriteLine(tokens.OutputTokens());
System.Console.WriteLine(tree.OutputTree(tokens));
var visitor = new CalculatorVisitor();
visitor.Visit(tree);
}
}
static void Main(string[] args)
{
var input = "1 + 2 * 3";
var str = new AntlrInputStream(input);
var lexer = new arithmeticLexer(str);
var tokens = new CommonTokenStream(lexer);
var parser = new arithmeticParser(tokens);
var listener = new ErrorListener <IToken>();
parser.AddErrorListener(listener);
var tree = parser.file();
if (listener.had_error)
{
System.Console.WriteLine("error in parse.");
}
else
{
System.Console.WriteLine("parse completed.");
System.Console.WriteLine(tokens.OutputTokens());
System.Console.WriteLine(tree.OutputTree(tokens));
}
}
