ladies and gentlemen, we have Luau running

src/commands.rs

@@ -11,6 +11,11 @@ enum ValidStatus {
 	TryExists(io::Error)
 }
 
+fn display_none<T>(e: io::Error) -> Option<T> {
+	println!("{e}");
+	None
+}
+
 trait PathBufIsValid {
 	fn is_valid(&self) -> Result<PathBuf, ValidStatus>;
 	fn is_valid_or_home(&self) -> Option<PathBuf>;
@@ -50,7 +55,7 @@ impl PathBufIsValid for PathBuf {
 
 impl ChangeDirectory for Command {
 	fn set_current_dir(&self, new_path: &Path) -> Option<PathBuf> {
-	    std::env::set_current_dir(new_path).map_or_else(|cd_err| {println!("{cd_err}"); None}, |()| Some(new_path.to_path_buf()))
+	    std::env::set_current_dir(new_path).map_or_else(|cd_err| display_none(cd_err), |()| Some(new_path.to_path_buf()))
 	}
 
 	fn home_dir(&self) -> Option<PathBuf> {
@@ -124,10 +129,7 @@ impl Command {
 
     pub fn spawn(&self, command_process: io::Result<process::Child>) -> ProcessExitStatus {
     	match command_process {
-            Err(e) => {
-                println!("{e}");
-                None
-            },
+            Err(e) => display_none(e),
             Ok(mut child) => Some(match child.wait() {
                 Ok(exit_status) => exit_status,
                 Err(exit_status_err) => {

src/lib.rs

@@ -1,10 +1,11 @@
 pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 pub mod shell;
-
 mod commands;
 mod ps;
 mod rc;
 
 #[path = "./luau/vm.rs"]
-mod vm;
+mod vm;
+#[path = "./luau/alias.rs"]
+mod alias;

src/luau/vm.rs

@@ -1,26 +1,33 @@
 use mlua::{
 	Lua as Luau,
 	Result as lResult,
-	MultiValue
+	MultiValue,
 };
+use core::fmt;
+use color_print::cprintln;
 
-fn new_instance() -> lResult<Luau> {
-	let instance = Luau::new();
-	instance.sandbox(true)?;
-	instance.globals().set("getfenv", mlua::Nil)?;
-	instance.globals().set("setfenv", mlua::Nil)?;
-	Ok(instance)
+fn display_none<T, E>(err: E) -> Option<T>
+where
+	E: fmt::Display
+{
+	println!("{err}");
+	None
 }
 
-fn out(args: MultiValue) -> String {
+fn luau_error<T>(err: mlua::Error) -> Option<T> {
+	cprintln!("<bold>====</>\n<r>{err}</>\n<bold>====</>");
+	None
+}
+
+fn luau_out(luau_args: MultiValue) -> String {
 	let mut print: Vec<String> = Vec::new();
-	args.iter()
+	luau_args.iter()
 		.map(|arg| arg.to_string().unwrap_or("<SHELL CONVERSION ERROR>".to_owned()))
-		.for_each(|v| {
+		.for_each(|arg| {
 	 		if !print.is_empty() {
-	           	print.push(" ".to_owned());
-	      	}
-	       	print.push(v);
+	           	print.push('\u{0009}'.to_string());
+	      	};
+	       	print.push(arg);
 		}
 	);
 	print.concat()
@@ -28,31 +35,45 @@ fn out(args: MultiValue) -> String {
 
 trait Globals {
 	fn print(&self) -> lResult<()>;
+	fn printraw(&self) -> lResult<()>;
 }
 impl Globals for Vm {
 	fn print(&self) -> lResult<()> {
-		self.0.globals().set("print", self.0.create_function(|_, args: MultiValue| -> lResult<()> {
-			color_print::cprintln!("{}", out(args));
+		self.0.globals().set("print", self.0.create_function(|_this, args: MultiValue| -> lResult<()> {
+			cprintln!("{}", luau_out(args));
 			Ok(())
-		})?)?;
-		self.0.globals().set("printraw", self.0.create_function(|_, args: MultiValue| -> lResult<()> {
-			println!("{}", out(args));
+		})?)
+	}
+	fn printraw(&self) -> lResult<()> {
+		self.0.globals().set("printraw", self.0.create_function(|_this, args: MultiValue| -> lResult<()> {
+			println!("{}", luau_out(args));
 			Ok(())
 		})?)
 	}
 }
 
-struct Vm(Luau);
+pub struct Vm(Luau);
 impl Vm {
 	pub fn new() -> Option<Self> {
-		new_instance().map_or(None, |l| Some(Self(l)))
+		let spawn_luau = || -> lResult<Luau> {
+			let instance = Luau::new();
+			instance.sandbox(true)?;
+			instance.globals().set("getfenv", mlua::Nil)?;
+			instance.globals().set("setfenv", mlua::Nil)?;
+			Ok(instance)
+		};
+		spawn_luau().map_or_else(|e| display_none(e), |l| Some(Self(l)))
 	}
 
 	fn set_shell_globals(&self) -> mlua::Result<()> {
-		todo!()
+		self.print()?;
+		self.printraw()?;
+		Ok(())
 	}
 
-	pub fn exec(&self, source: String) -> mlua::Result<()> {
-		self.set_shell_globals().and(self.0.load(source).exec())
+	pub fn exec(&self, source: String) -> Option<()> {
+		self.set_shell_globals().map_or_else(|e| display_none(e), |()| {
+			self.0.load(source).exec().map_or_else(|e| luau_error(e), |()| Some(()))
+		})
 	}
 }

src/rc.rs

@@ -25,6 +25,11 @@ enum CreateErr {
 	Passable
 }
 
+fn display_none<T>(e: io::Error) -> Option<T> {
+	println!("{e}");
+	None
+}
+
 #[allow(dead_code)]
 trait IsValid {
 	fn is_valid(&self, is_dir_or_file: bool) -> Result<PathBuf, IsValidDirErr>;
@@ -68,10 +73,7 @@ impl IsValid for PathBuf {
 		self.is_valid_or(self.is_dir(), || {
 			match fs::create_dir(self) {
 			    Ok(()) => Some(self.to_path_buf()),
-			    Err(create_e) => {
-					println!("{create_e}");
-					None
-				},
+			    Err(create_e) => display_none(create_e),
 			}
 		})
 	}
@@ -79,17 +81,11 @@ impl IsValid for PathBuf {
 	fn is_valid_file_or_create(&self, default_file_bytes: &[u8]) -> Option<PathBuf> {
 		self.is_valid_or(self.is_file(), || {
 			match File::create(self) {
-			    Err(create_e) => {
-					println!("{create_e}");
-					None
-				},
 			    Ok(mut file) => match file.write_all(default_file_bytes) {
 			        Ok(()) => Some(self.to_path_buf()),
-			        Err(write_e) => {
-						println!("{write_e}");
-						None
-					},
+			        Err(write_e) => display_none(write_e),
 				},
+			    Err(create_e) => display_none(create_e)
 			}
 		})
 	}
@@ -113,6 +109,13 @@ pub fn config_file() -> Option<PathBuf> {
 	config_file.is_valid_file_or_create(DEFAULT_CONFIG_CONTENT.as_bytes())
 }
 
+//TODO: history.rs
+pub fn history_file() -> Option<PathBuf> {
+	let mut config_file = config_dir()?;
+	config_file.push(".history");
+	config_file.is_valid_file_or_create("".as_bytes())
+}
+
 pub fn none() -> Option<PathBuf> {
 	None
 }

src/shell.rs

@@ -1,21 +1,38 @@
-use crate::{ps, commands, rc};
+use crate::{ps, commands, rc, vm};
 use std::{fs, io::{self}};
+use core::fmt;
+
+fn display_none<T, E>(err: E) -> Option<T>
+where
+	E: fmt::Display
+{
+	println!("{err}");
+	None
+}
 
 pub struct Config {
     pub norc: bool
 }
 
-pub struct LambdaShell {
-    terminating: bool,
-    storage: Storage,
-    config: Config,
-}
-
 struct Storage {
     pub command_exit_status: commands::ProcessExitStatus,
     pub ps1: String,
 }
 
+trait ShellLuauVm {
+	fn shell_vm_exec(&self, source: String) -> Option<()>;
+}
+impl ShellLuauVm for LambdaShell {
+	fn shell_vm_exec(&self, source: String) -> Option<()> {
+		vm::Vm::new().map_or(None, |vm| vm.exec(source))
+	}
+}
+
+pub struct LambdaShell {
+    terminating: bool,
+    storage: Storage,
+    config: Config,
+}
 impl LambdaShell {
     pub fn create(config: Config) -> Self {
    		Self {
@@ -47,11 +64,18 @@ impl LambdaShell {
 	    })
     }
 
-    pub fn start(&mut self) {
-	   	let rc_file = match self.config.norc {
+    fn rc_parse(&self) {
+    	let rc_file = match self.config.norc {
 	        true => rc::none(),
 	        false => rc::config_file(),
 	    };
+     	rc_file.map(|conf_file| fs::read_to_string(conf_file)
+      		.map_or_else(|read_err| display_none(read_err), |conf| self.shell_vm_exec(conf))
+      	);
+    }
+
+    pub fn start(&mut self) {
+    	self.rc_parse();
 
      	ps::display(&self.storage.ps1);