private static void Process(string line)
{
if (_replOptions.HasFlag(ReplOptions.PrintLexedTokens))
{
var lexer = new Lexer(line);
var tokens = lexer.Lex();
Console.WriteLine("=== Lexed Tokens ===");
foreach (var token in tokens)
{
Console.WriteLine(token.ToString());
}
Console.WriteLine();
}
var parser = new Parser(line);
var syntaxTree = parser.Parse();
if (_replOptions.HasFlag(ReplOptions.PrintSyntaxTokens))
{
private static void Main(string[] args)
{
var text = new StringBuilder();
while (true)
{
if (text.Length == 0)
{
Console.Write("> ");
}
else
{
Console.Write("· ");
}
var line = Console.ReadLine();
if (string.IsNullOrEmpty(line))
{
continue;
}
if (line.StartsWith('/'))
{
switch (line.ToUpperInvariant())
{
case "/Q":
case "/EXIT":
return;
case "/CLS":
Console.Clear();
break;
case "/L":
case "/LEX":
case "/SHOWLEX":
_replOptions = SwitchFlag(ReplOptions.PrintLexedTokens);
var printLexString = _replOptions.HasFlag(ReplOptions.PrintLexedTokens)
? $"#{ConsoleColor.Green}#enabled#RESET#"
: $"#{ConsoleColor.Red}#disabled#RESET#";
ColoredConsole.WriteLine($"Printing lexed tokens {printLexString}.");
break;
case "/S":
case "/SYNTAX":
case "/SHOWSYNTAX":
_replOptions = SwitchFlag(ReplOptions.PrintSyntaxTokens);
var printSyntaxString = _replOptions.HasFlag(ReplOptions.PrintSyntaxTokens)
? $"#{ConsoleColor.Green}#enabled#RESET#"
: $"#{ConsoleColor.Red}#disabled#RESET#";
ColoredConsole.WriteLine($"Printing syntax tree {printSyntaxString}.");
break;
case "/R":
case "/RUN":
Process(text.ToString());
break;
case "/E":
case "/EMIT":
Emit(text.ToString());
break;
case "/RS":
case "/RESET":
text.Clear();
break;
default:
Console.Error.WriteLine($"Unknown command: {line}.");
break;
}
}
else
{
text.AppendLine(line);
}
}
}
