/* errorop.c: Error handling operations. */ #include "x.tab.h" #include "operator.h" #include "execute.h" #include "ident.h" void op_error_func(void) { if (!func_init_0()) return; if (!cur_frame->handler_info) { cthrow(error_id, "Request for handler info outside handler."); return; } push_error(cur_frame->handler_info->error); } void op_traceback(void) { if (!func_init_0()) return; if (!cur_frame->handler_info) { cthrow(error_id, "Request for handler info outside handler."); return; } push_list(cur_frame->handler_info->traceback); } void op_throw(void) { Data *args, error_arg; int num_args; String *str; if (!func_init_2_or_3(&args, &num_args, ERROR, STRING, 0)) return; /* Throw the error. */ str = string_dup(args[1].u.str); if (num_args == 3) { data_dup(&error_arg, &args[2]); user_error(args[0].u.error, str, &error_arg); data_discard(&error_arg); } else { user_error(args[0].u.error, str, NULL); } string_discard(str); } void op_rethrow(void) { Data *args; List *traceback; if (!func_init_1(&args, ERROR)) return; if (!cur_frame->handler_info) { cthrow(error_id, "Request for handler info outside handler."); return; } /* Abort the current frame and propagate an error in the caller. */ traceback = list_dup(cur_frame->handler_info->traceback); frame_return(); propagate_error(traceback, args[0].u.error); }