Add lex! macro

src/lib.rs

@@ -59,6 +59,20 @@ pub struct Lexer {
     pub current_char: Option<char>,
 }
 
+/// Instantiates Lexer and retrieves Tokens of given source.
+/// Returns Arc<[Token]>
+/// Equivalent to:
+/// ```
+/// let source  = "some source";
+/// let lexed = Lexer::new(source).get_tokens();
+/// ```
+#[macro_export]
+macro_rules! lex {
+    ($source:expr) => {{
+        $crate::Lexer::get_tokens(&mut $crate::Lexer::new($source))
+    }};
+}
+
 impl Lexer {
     /// Instantiates the [`Lexer`]
     pub fn new(input: &str) -> Self {