Change crate name to 'deimos'; make compiler bin subproject.

Cargo.lock

@@ -1,7 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
-name = "deimos-lang"
+name = "deimos"
 version = "0.1.0"

Cargo.toml

@@ -1,6 +1,10 @@
 [package]
-name = "deimos-lang"
+name = "deimos"
 version = "0.1.0"
 edition = "2021"
 
+[[bin]]
+name = "dmc"
+path = "src/bin/compiler"
+
 [dependencies]

src/bin/compiler/main.rs

@@ -0,0 +1,13 @@
+use deimos::lexer::tokenize;
+use std::process::exit;
+
+fn main() {
+    let src = String::from("print 'Hello, World!'");
+    let r = tokenize(&src);
+    if let Err(e) = r {
+        eprintln!("{}", e);
+        exit(1);
+    }
+    let tokens = r.unwrap();
+    println!("{:?}", tokens);
+}

src/lexer/mod.rs

@@ -31,7 +31,7 @@ pub enum Token {
     Abstract,
 }
 
-pub fn tokenize(input: &String) -> Result<Vec<Token>, &'static str> {
+pub fn tokenize(input: &String) -> Result<Vec<Token>, String> {
     let mut tokens: Vec<Token> = Vec::new();
     let mut peekable = input.chars().peekable();
     while let Some(c) = peekable.next() {
@@ -72,12 +72,14 @@ pub fn tokenize(input: &String) -> Result<Vec<Token>, &'static str> {
                 match count {
                     1 => tokens.push(Token::Dot),
                     3 => tokens.push(Token::Ellipsis),
-                    _ => return Err("Unexpected number of tokens after '.'"),
+                    _ => return Err(String::from("Unexpected number of tokens after '.'")),
                 }
             }
             _ => {
                 if let Some(token) = match_identifier_or_keyword(c, &mut peekable) {
                     tokens.push(token);
+                } else {
+                    return Err(String::from(format!("Unexpected token: {}", c)));
                 }
             }
         }

src/lib.rs

@@ -1,2 +1,2 @@
-mod lexer;
+pub mod lexer;
-mod vm;
+pub mod vm;