1use std::{cell::RefCell, rc::Rc};
2
3#[macro_export]
4macro_rules! arg_check {
5 ($arg:expr => $t:pat, $e:literal, $n:literal) => {
6 let $t = $arg else {
7 return Err(Error::new(
8 &format!($e, $arg.get_type().to_string()),
9 ErrorSource::Builtin(String::from($n)),
10 ));
11 };
12 };
13}
14
15#[macro_export]
16macro_rules! pat_check {
17 ($pat:pat = $value:expr) => {
18 if let $pat = $value {
19 true
20 } else {
21 false
22 }
23 };
24}
25
26#[macro_export]
27macro_rules! as_type {
28 ($expr:expr => $t:ty, $err:literal) => {
29 match $expr.as_any().downcast_ref::<$t>() {
30 Some(obj) => obj,
31 None => panic!($err),
32 }
33 };
34}
35
36#[macro_export]
37macro_rules! as_mut_type {
38 ($expr:expr => $t:ty, $err:literal) => {
39 match $expr.as_mut().downcast_mut::<$t>() {
40 Some(obj) => obj,
41 None => panic!($err),
42 }
43 };
44}
45
46pub fn make_ref<T>(scope: T) -> MutRc<T> {
47 Rc::new(RefCell::new(scope))
48}
49
50pub type MutRc<T> = Rc<RefCell<T>>;