use crate::errors::CLIArgumentError;
use lrlex::lrlex_mod;
use lrpar::lrpar_mod;
use std::error::Error;
use std::fmt::Display;
use std::io;
use std::io::ErrorKind::InvalidInput;

mod ast;
mod errors;
mod optimising;
mod tests;

lrlex_mod!("lexers/fudge.l");
lrpar_mod!("parsers/fudge.y");

fn main() -> Result<(), Box<dyn Error>> {
    let src_path = std::env::args()
        .nth(1)
        .ok_or(Box::new(CLIArgumentError("Source File Not Provided")))?;
    let src_string = std::fs::read_to_string(&src_path)?;

    let lexer_def = fudge_l::lexerdef();

    let lexer = lexer_def.lexer(src_string.as_str());
    let (res, errs) = fudge_y::parse(&lexer);
    match (res, errs) {
        (Some(Ok(res)), _) => {
            println!("Parsed succesfully:");
            println!("{:#?}", res);
        },
        (Some(Err(e)), _) => {
            println!("Parsing failed:");
            println!("{:#?}", e);
        }
        (_, vec) => {
            println!("LexParseErrors encountered:");
            println!("{:#?}", vec);
        }
    }
    
    Ok(())
}

// fn main() {
//     if let Err(ref e) = main_() {
//         return e.fmt()
//     }
// }