🐐 Line numbers in errors

tests/12_test_failures.py

@@ -174,3 +174,34 @@ class TestCompilerErrors(unittest.TestCase):
   @parameterized.expand(compiler_error_tests)
   def test_compiler_errors(self, source, error_type):
     run_compiler_error_test(self, source)
+
+
+class TestErrorLineNumbers(unittest.TestCase):
+  def test_interpreter_error_includes_line(self):
+    source = "DESIGNA x VT III\nDIC(y)\n"
+    tokens = Lexer().get_lexer().lex(source)
+    program = Parser().parse(tokens)
+    with self.assertRaisesRegex(CentvrionError, r"at line 2"):
+      program.eval()
+
+  def test_compiled_error_includes_line(self):
+    source = "DESIGNA x VT III\nDIC(y)\n"
+    tokens = Lexer().get_lexer().lex(source)
+    program = Parser().parse(tokens)
+    c_source = compile_program(program)
+    with tempfile.NamedTemporaryFile(suffix=".c", delete=False, mode="w") as tmp_c:
+      tmp_c.write(c_source)
+      tmp_c_path = tmp_c.name
+    with tempfile.NamedTemporaryFile(suffix="", delete=False) as tmp_bin:
+      tmp_bin_path = tmp_bin.name
+    try:
+      subprocess.run(
+        ["gcc", "-O2", tmp_c_path, _RUNTIME_C, "-o", tmp_bin_path, "-lcurl", "-lmicrohttpd"],
+        check=True, capture_output=True,
+      )
+      proc = subprocess.run([tmp_bin_path], capture_output=True, text=True)
+      self.assertNotEqual(proc.returncode, 0)
+      self.assertIn("at line 2", proc.stderr)
+    finally:
+      os.unlink(tmp_c_path)
+      os.unlink(tmp_bin_path)