use std::fs;
// Ch8Asm
// Converts well formed CH8ASM.
// no variables.
// no labels.
// nothing fun.
use pest::Parser;
use pest_derive::Parser;

#[derive(Parser)]
#[grammar = "chip8_asm.pest"]
pub struct Chip8AsmParser;

fn main() {
    println!("Taxation is Theft");



    let unparsed = fs::read_to_string("resources/test/gemma_disassembler_1_chip_logo_ch8_asm.asc").expect("Unable to read input");

    let file = Chip8AsmParser::parse(Rule::file, &unparsed).expect("Unable to parse.  Try again.")
        .next().unwrap();

    for record in file.into_inner() {
        match record.as_rule() {
            Rule::instruction => {
                println!("INSTRUCTION = {:?}", record.into_inner().flatten())
            }
            _ => {
                println!("UNHANDLED PART.");
            }
        }
    }
}

mod test {
    use super::*;

    #[test]
    fn bits_all_parse() {
        println!("PARSED: {:?}",
                 Chip8AsmParser::parse(Rule::instruction, "CLS")
        );
        println!("PARSED: {:?}",
                 Chip8AsmParser::parse(Rule::parameter, "0x01")
        );
        let parsed = Chip8AsmParser::parse(Rule::comment, "; comment").unwrap();
        for i in parsed {
            println!("PARSED COMMENT -> {:?}", i);
        }

        let parsed =
            Chip8AsmParser::parse(Rule::record, "CLS ; comment").unwrap();
        for i in parsed {
            println!("RULE PAIR THING: {:?}", i);
        }

        let parsed = Chip8AsmParser::parse(Rule::record, "ADDI 0x01 ; comment");
        for i in parsed {
            println!("RULE PAIR THING: {:?}", i);
        }


        let parsed = Chip8AsmParser::parse(Rule::record, "ADDI ; comment");
        for i in parsed {
            println!("RULE PAIR THING: {:?}", i);
        }


        println!("PARSED: {:?}",
                 Chip8AsmParser::parse(Rule::record, "ADD 0x01 0x02 ; Comment")
        );

        println!("PARSED: {:?}",
                 Chip8AsmParser::parse(Rule::record, "ADD ADD ADD")
        );

        println!("PARSED: {:?}",
                 Chip8AsmParser::parse(Rule::record, "ADD 0x01 0x02 ; Comment")
        );

        println!("PARSED: {:?}",
                 Chip8AsmParser::parse(Rule::record, "ADD 0x01 0x02 ; Comment")
        );

    }
}