static int Run(string source)
{
var errorState = new ErrorState();
var lexer = new Lexer(source, errorState);
var tokens = lexer.Tokenize();
var parser = new Parser(tokens, errorState);
var statements = parser.Parse();
if (errorState.HasErrors)
{
ErrorReporter.ReportSyntaxErrors(errorState);
return(2);
}
var resolver = new Resolver(_interpreter, errorState);
resolver.Resolve(statements);
if (errorState.HasErrors)
{
ErrorReporter.ReportSyntaxErrors(errorState);
return(2);
}
_interpreter.Interpret(statements);
return(_interpreter.RuntimeExceptionThrown ? 3 : 1);
}