Support parenthesized expressions

Author: axiom-systemstech

native/src/parser.rs

@@ -455,6 +455,12 @@ impl Parser {
                 self.consume(TokenKind::RBracket, "expected ']'")?;
                 Expression::Array(elements)
             }
+            TokenKind::LParen => {
+                self.position += 1;
+                let expression = self.expression()?;
+                self.consume(TokenKind::RParen, "expected ')' ")?;
+                expression
+            }
             _ => return Err(self.error("expected literal")),
         };
         while self.check(TokenKind::LBracket) {

native/tests/cli_errors.rs

@@ -125,11 +125,7 @@ fn less_than_runs_in_source_and_compiled_artifact() {
 fn unary_negation_runs_in_source_and_compiled_artifact() {
     let source_path = temp_path("negate_source.ax");
     let artifact_path = temp_path("negate_output.axm");
-    std::fs::write(
-        &source_path,
-        "fn main() { let total: Int = 2 + 3; print(-total); print(-2 * 3) }",
-    )
-    .unwrap();
+    std::fs::write(&source_path, "fn main() { print(-(2 + 3)); print(-2 * 3) }").unwrap();
 
     let source_run = run_axiom(&["run", source_path.to_str().unwrap()]);
     assert!(