merge codegen into main crate

src/bin/codegen.rs

@@ -0,0 +1,30 @@
+use main_error::MainError;
+use prettyplease::unparse;
+use std::env;
+use std::fs;
+use syn::{parse2, File};
+use tf_demo_parser::codegen::gameevent::generate_game_events;
+use tf_demo_parser::codegen::propnames::generate_prop_names;
+use tf_demo_parser::Demo;
+
+fn main() -> std::result::Result<(), MainError> {
+    better_panic::install();
+
+    let args: Vec<_> = env::args().collect();
+    if args.len() < 2 {
+        println!("1 argument required");
+        return Ok(());
+    }
+    let path = args[1].clone();
+    let file = fs::read(path).expect("Unable to read file");
+    let demo = Demo::new(&file);
+    let tokens = match args.get(2).map(|s| s.as_str()) {
+        None | Some("events") => generate_game_events(demo),
+        Some("props") => generate_prop_names(demo),
+        _ => panic!("unsupported"),
+    };
+    let file = parse2::<File>(tokens)?;
+    let code = unparse(&file);
+    println!("{}", code);
+    Ok(())
+}