Add lex! macro

flake.lock

@@ -81,11 +81,11 @@
       "locked": {
         "lastModified": 1,
         "narHash": "sha256-8wkkYGr1dPSnX9oVMX8D6dTOROXKOYpBTKfriA0sEBI=",
-        "path": "/nix/store/hprrr24yh5w0pbbbz2hlwblriaqb99kx-source/flake.systems.nix",
+        "path": "/nix/store/3447wnbwfkgd91v8x0d3hj48hvb2h010-source/flake.systems.nix",
         "type": "path"
       },
       "original": {
-        "path": "/nix/store/hprrr24yh5w0pbbbz2hlwblriaqb99kx-source/flake.systems.nix",
+        "path": "/nix/store/3447wnbwfkgd91v8x0d3hj48hvb2h010-source/flake.systems.nix",
         "type": "path"
       }
     },

flake.nix

@@ -13,12 +13,13 @@
     # Dev tools
     treefmt-nix.url = "github:numtide/treefmt-nix";
   };
-  inputs.systems.url = "./flake.systems.nix";
-  inputs.systems.flake = false;
 
   outputs = inputs:
     inputs.flake-parts.lib.mkFlake { inherit inputs; } {
-      systems = import inputs.systems;
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+      ];
       imports = [
         inputs.treefmt-nix.flakeModule
       ];

flake.systems.nix

@@ -1,4 +0,0 @@
-[
-  "x86_64-linux"
-  "aarch64-linux"
-]

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 {