public Scanner(string path, string fileName)
{
buffer = new StringBuilder ();
source = new Source (path, fileName);
log4net.Config.BasicConfigurator.Configure ();
Log = log4net.LogManager.GetLogger (typeof(Scanner));
}
public Token Expect(TokenType type, string value, Source source)
{
var token = PeekToken ();
if (Accept(type, value)) {
return token;
}
var failed = ScanToken ();
if (failed != null) {
var error = "Metal [Error]: Invalid token \"{0}\" at line: {1}, position: {2}. Expected \"{3}\"";
Log.Error (string.Format(error, value, source.Line, source.Position, Token.GetName(type)));
} else {
var error = "Metal [Error]: End of File at line: {0}, position: {1}. Expected \"{2}\"";
Log.Error (string.Format(error, source.Line, source.Position, Token.GetName(type)));
throw new Exception ("");
}
return new Token (type, "", source);
}
public Token(TokenType type, String value, Source source)
{
this.type = type;
this.value = value;
this.source = source;
}
public Token(TokenType token, Source source)
{
this.type = token;
this.source = source;
}
