diff --git a/vm/module.jai b/vm/module.jai
index eb96447..79037b1 100644
--- a/vm/module.jai
+++ b/vm/module.jai
@@ -21,9 +21,12 @@ strings :: #import "String"; // @future
    ok := parse_string(*parser, #string END
       var x = 10.0
       var y = 20.0
+      var z = x + y * 2.0 / 3.0
 
-      print x
-      print y
+      print x // 10
+      print y // 20
+      print z // 23.3
+      // print z
    END);
 
    interp: Interp;
diff --git a/vm/parser.jai b/vm/parser.jai
index 58fc632..1a92a2a 100644
--- a/vm/parser.jai
+++ b/vm/parser.jai
@@ -203,10 +203,6 @@ parse_string :: (p: *Parser, source: string) -> bool {
       if node == null break;
 
       array.append(*p.toplevel, node);
-
-      if node.kind == {
-         case .variable;
-      }
    }
 
    return false;
@@ -217,7 +213,7 @@ parse_string :: (p: *Parser, source: string) -> bool {
 
 parse_toplevel :: (p: *Parser) -> *Node {
    t, ok := expect_token(p, .kw_var, .kw_def, .kw_print);
-   basic.assert(ok, "var, def, print"); // @errors
+   basic.assert(ok, "var, def, print, found '%'", t.str); // @errors
 
    if t.kind == {
       // var sym type_expr
@@ -225,12 +221,12 @@ parse_toplevel :: (p: *Parser) -> *Node {
       // var sym           = expr
       case .kw_var; #through;
       case .kw_def;
+
          s:, ok = expect_token(p, .symbol);
          basic.assert(ok, "symbol"); // @errors
 
          type_expr:  *Node;
          value_expr: *Node;
-
          is_const := t.kind == .kw_def;
 
          t = peek_token(p);
@@ -499,6 +495,8 @@ consume_token :: (p: *Parser) -> Token {
    if at_end(p) return .{ kind = .end_of_file };
 
    c := p.source[p.offset];
+
+   // skip whitespace
    while !at_end(p) {
       c = p.source[p.offset];
       if c == {
@@ -511,6 +509,21 @@ consume_token :: (p: *Parser) -> Token {
       }
    }
 
+   // line comments
+   // @todo(judah): don't ignore these
+   if c == "/" && p.offset + 1 < p.source.count && p.source[p.offset + 1] == "/" {
+      p.offset += 2;
+
+      while !at_end(p) {
+         c = p.source[p.offset];
+         if c == "\n" break;
+         p.offset += 1;
+      }
+
+      // @todo(judah): don't recurse
+      return consume_token(p);
+   }
+
    if starts_symbol(c) {
       t := Token.{ str = .{ data = p.source.data + p.offset } };
       while !at_end(p) {