test program

src/lex.rs

@@ -20,7 +20,7 @@ impl Span {
 #[derive(Debug, Clone)]
 pub struct Token<'code> {
     span: Span,
-    kind: TokenType<'code>,
+    pub(crate) kind: TokenType<'code>,
 }
 
 impl<'code> Token<'code> {

src/lib.rs

@@ -5,5 +5,11 @@ mod parse;
 pub fn run_program(program: &str) {
     let lexer = lex::Lexer::lex(program);
     let tokens: Result<Vec<_>, _> = lexer.collect();
-    println!("{:#?}", tokens);
+    println!(
+        "{:#?}",
+        tokens.map(|tokens| tokens
+            .into_iter()
+            .map(|token| token.kind)
+            .collect::<Vec<_>>())
+    );
 }

src/main.rs

@@ -1,3 +1,15 @@
 fn main() {
-    println!("Hello, world!");
+    if let Some(filename) = std::env::args().skip(1).next() {
+        println!("'{}'", filename);
+        match std::fs::read_to_string(filename) {
+            Ok(contents) => {
+                script_lang::run_program(&contents);
+            }
+            Err(err) => {
+                eprintln!("{}", err);
+            }
+        }
+    } else {
+        eprintln!("Usage: <filename>")
+    }
 }

test.sl

@@ -0,0 +1,7 @@
+fn main() {
+    let number = 5
+    let number2 = 5325
+    let is_equal = number == number2
+
+    print("Is Equal: " + is_equal)
+}