Added support for multi-line comments

src/scanner.cpp

@@ -65,6 +65,13 @@ void Scanner::scan_token() {
     case '/':
       if (match('/')) {  // A '//' single-line comment
         while (peek() != '\n' && !is_at_end()) advance();
+      } else if (match('*')) {  // A /* multi-line comment
+          bool in_comment = true;
+          while (in_comment && !is_at_end()) {
+              while (!match('*') && !is_at_end()) advance();
+              // Matched a * - comment ends if we match a /
+              in_comment = !match('/');
+          }
       } else {
         add_token(SLASH);
       }

test/functional_tests.py

@@ -77,6 +77,11 @@ def test_superclass_method_call_on_instance(self):
       output = run_file(absolute_path('superclass_method.lox'))
       self.assertEqual(expected, output)
 
+    def test_multiline_comments(self):
+      expected = 'Interpreter output:\nMultiline comments!'
+      output = run_file(absolute_path('multiline_comments.lox'))
+      self.assertEqual(expected, output)
+
 
 class LoxppOutputErrorsTest(unittest.TestCase):
 

test/multiline_comments.lox

@@ -0,0 +1,9 @@
+/* Multi
+line
+comment 1 */
+
+var x = "Multiline comments!";
+
+/* Il$$3g^l charac%ers '\ */
+
+print x;