Initial commit for fern

src/main.rs

@@ -0,0 +1,48 @@
+#![allow(unused_unsafe)]
+
+pub mod libsh;
+pub mod shellenv;
+pub mod parse;
+pub mod prelude;
+pub mod execute;
+pub mod signal;
+pub mod prompt;
+pub mod builtin;
+pub mod expand;
+
+use libc::PIPE_BUF;
+use nix::unistd::setpgid;
+use signal::sig_setup;
+
+use crate::prelude::*;
+
+pub fn main() {
+	sig_setup();
+	let mut shenv = ShEnv::new();
+
+	loop {
+		log!(TRACE, "Entered loop");
+		let line = match prompt::read_line(&mut shenv) {
+			Ok(line) => line,
+			Err(e) => {
+				eprintln!("{}",e);
+				continue;
+			}
+		};
+		let input = Rc::new(line);
+		log!(INFO, "New input: {:?}", input);
+		let token_stream = Lexer::new(input).lex();
+		log!(TRACE, "Token stream: {:?}", token_stream);
+		match Parser::new(token_stream).parse() {
+			Err(e) => {
+				eprintln!("{}",e);
+			}
+			Ok(syn_tree) => {
+				if let Err(e) = Executor::new(syn_tree, &mut shenv).walk() {
+					eprintln!("{}",e);
+				}
+			}
+		}
+		log!(TRACE, "Finished iteration");
+	}
+}