hermes_rs 0.1.0

A dependency-free disassembler and assembler for the Hermes bytecode
Documentation 
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#[macro_use]
pub mod hermes;

use hermes::InstructionParser;
use hermes::{HermesHeader, HermesStruct};

use std::{fs::File, io, vec};

// This is mostly just a test function as of right now.
// TODO: Scrap it and only export the lib
fn main() {
    let filename = "./test_file.hbc";
    let f = File::open(&filename).expect("no file found");
    let mut reader = io::BufReader::new(f);
    let header: HermesHeader = HermesStruct::deserialize(&mut reader);

    println!("HBC Version: {:?}", header);

    header.function_headers.iter().for_each(|fh| {
        println!("function header: {:?}", fh);
    });

    header.parse_bytecode(&mut reader);

    let load_const_string =
        hermes::v94::Instruction::LoadConstString(hermes::v94::LoadConstString {
            op: hermes::v94::str_to_op("LoadConstString"),
            r0: 0,
            p0: 2,
        });

    // AsyncBreakCheck
    let async_break_check =
        hermes::v94::Instruction::AsyncBreakCheck(hermes::v94::AsyncBreakCheck {
            op: hermes::v94::str_to_op("AsyncBreakCheck"),
        });

    // Ret r0
    let ret = hermes::v94::Instruction::Ret(hermes::v94::Ret {
        op: hermes::v94::str_to_op("Ret"),
        r0: 0,
    });

    let instructions = vec![load_const_string, async_break_check, ret];
    let mut writer = Vec::new();
    for instr in instructions {
        instr.serialize(&mut writer);
    }

    assert!(
        writer == vec![115, 0, 2, 0, 98, 92, 0],
        "Bytecode is incorrect!"
    );
    // if writer == vec![115, 0, 2, 0, 98, 92, 0] {
    //     println!("Bytecode is correct!");
    // } else {
    //     println!("Bytecode is incorrect!");
    // }
}