Witch of Git - jade-rose/blob - toolchain/src/bin/assembler.rs

   1 use std::io::{self, BufRead};
   2 use toolchain::inst::{encode::Encode, parse::parse_inst};
   3
   4 macro_rules! other_err {
   5     ($fmt:expr $(, $arg:expr)* $(,)?) => {
   6         io::Error::new(io::ErrorKind::Other, format!($fmt, $($arg),*))
   7     }
   8 }
   9
  10 fn main() -> io::Result<()> {
  11     let mut cursor = io::Cursor::new(Vec::new());
  12     for (i, line) in io::stdin().lock().lines().enumerate() {
  13         let line = line.map_err(|_| other_err!("Error reading line {}", i + 1))?;
  14         let line = line.trim();
  15         if line.is_empty() {
  16             continue;
  17         }
  18         let inst = parse_inst(&line)
  19             .ok_or_else(|| other_err!("Error parsing instruction on line {}", i + 1))?;
  20         inst.encode(&mut cursor)?;
  21     }
  22     for line in cursor.into_inner().chunks(40) {
  23         for byte in line {
  24             print!("{:02x}", byte);
  25         }
  26         println!();
  27     }
  28     Ok(())
  29 }