package main;

import interpreter.*;

public class LispMain {

    private LispMain() {}

    public static void main(String[] args) {
        LispInterpreter interpreter = buildInterpreter(args);
        interpreter.interpret();
    }

    private static LispInterpreter buildInterpreter(String[] args) {
        LispInterpreterBuilder builder = new LispInterpreterBuilderImpl();
        builder.setInput(System.in);
        builder.setOutput(System.out);
        builder.setErrorOutput(System.err);
        builder.setTerminationFunction(() -> System.exit(0));
        builder.setErrorTerminationFunction(() -> System.exit(1));

        if (args.length > 0)
            builder.useFile(args[0]);

        return builder.build();
    }

}