feat(execution): var assign

src/execution/execution.c

@@ -40,6 +40,8 @@ int execution(struct ast *ast, struct hash_map *vars)
         return exec_ast_list(ast_get_list(ast), vars);
     case AST_AND_OR:
         return exec_ast_and_or(ast_get_and_or(ast), vars);
+    case AST_ASSIGNMENT:
+        return exec_ast_assignment(ast_get_assignment(ast), vars);
     default:
         return 127;
     }