Update parser.c

Author: AzliRynz

parser.c

@@ -61,8 +61,8 @@ static Expr* unary() {
     if (match(TOKEN_MINUS)) {
         Expr* expr = malloc(sizeof(Expr));
         expr->type = EXPR_UNARY;
-        expr->unary.op = parser.previous;
-        expr->unary.right = unary();
+        expr->data.unary.op = parser.previous;
+        expr->data.unary.right = unary();
         return expr;
     }
     return primary();
@@ -88,9 +88,9 @@ static Expr* binary() {
                 Expr* right = unary();
                 Expr* new_expr = malloc(sizeof(Expr));
                 new_expr->type = EXPR_BINARY;
-                new_expr->binary.left = expr;
-                new_expr->binary.op = operator;
-                new_expr->binary.right = right;
+                new_expr->data.binary.left = expr;
+                new_expr->data.binary.op = operator;
+                new_expr->data.binary.right = right;
                 expr = new_expr;
                 break;
             default: