use std::env;
//use std::io::Write;
use std::process;

mod rlox_interpreter;
mod scanner;
mod token;
mod token_type;

use crate::rlox_interpreter::RLoxInterpreter;

// Exit codes from #include <sysexits.h>
const EX_OK: i32 = 0;
//const EX_DATAERR: i32 = 65;
const EX_USAGE : i32 = 66;

fn main() {
    let args: Vec<String> = env::args().collect();

    let exit_code = match args.len() {
        1 => { RLoxInterpreter::new().run_prompt() } ,
        2 => { RLoxInterpreter::new().run_file(&args[1]) },
        _ => {
            println!("Usage : rlox [script]");
            EX_USAGE
        }
    };

    process::exit(exit_code);
}


// Implémentations de référence :
// https://github.com/munificent/craftinginterpreters/wiki/Lox-implementations#rust

// Pause :
// http://www.craftinginterpreters.com/scanning.html#lexical-errors