main.rs: Basic TUI experience: line numbers, better errors

src/bin/msp430-asm/main.rs

@@ -1,61 +0,0 @@
-//! Simple frontend for the assembler
-
-use msp430_asm::preamble::*;
-use std::error::Error;
-use std::io::Read;
-
-fn main() -> Result<(), Box<dyn Error>> {
-    let mut repl = true;
-    for arg in std::env::args() {
-        match arg.as_str() {
-            "-" | "-f" | "--file" => repl = false,
-            _ => (),
-        }
-    }
-
-    let mut buf = String::new();
-    if repl {
-        let mut line = String::new();
-        while let Ok(len) = std::io::stdin().read_line(&mut line) {
-            match len {
-                0 => break,    // No newline (reached EOF)
-                1 => continue, // Line is empty
-                _ => {
-                    // Try to parse this line in isolation (this restricts preprocessing)
-                    match Parser::default().parse(&line) {
-                        Ok(_) => {
-                            buf += &line;
-                        }
-                        Err(error) => println!("{error}"),
-                    }
-                    line.clear();
-                }
-            }
-        }
-        match Assembler::assemble(&Parser::default().parse(&buf)?) {
-            Err(error) => println!("{error}"),
-            Ok(out) => {
-                for word in out {
-                    print!("{:04x} ", word.swap_bytes())
-                }
-            }
-        }
-
-        println!();
-    } else {
-        std::io::stdin().lock().read_to_string(&mut buf)?;
-        let tree = Parser::default().parse(&buf);
-        match &tree {
-            Ok(tree) => {
-                //msp430_asm::linker::Printer::default().visit_root(tree);
-                for insn in msp430_asm::assembler::Assembler::assemble(tree)? {
-                    print!("{:04x} ", insn.swap_bytes())
-                }
-                println!();
-            }
-            Err(error) => eprintln!("{error}"),
-        }
-    }
-
-    Ok(())
-}