tiny_ecs/
errors.rs

1use std::error::Error;
2use std::fmt;
3use std::fmt::{Debug, Display};
4
5#[derive(Debug)]
6pub enum ECSError {
7    Borrow,
8    BorrowMut,
9    Downcast,
10    DowncastMut,
11    PtrRef,
12    PtrMut,
13    NoComponentMap,
14    NoComponentForEntity,
15    WithAfterFinalise,
16    FinaliseNonEntity,
17    BitMasksExhausted,
18    AddDupeComponent,
19}
20
21impl Display for ECSError {
22    #[inline]
23    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
24        match self {
25            ECSError::Borrow => Display::fmt("already borrowed", f),
26            ECSError::BorrowMut => Display::fmt("already mutably borrowed", f),
27            ECSError::Downcast => Display::fmt("could not downcast to ref", f),
28            ECSError::DowncastMut => Display::fmt("could not downcast to mut ref", f),
29            ECSError::PtrRef => Display::fmt("failed to convert pointer to ref", f),
30            ECSError::PtrMut => Display::fmt("failed to convert pointer to mut", f),
31            ECSError::NoComponentMap => Display::fmt("no component map for type", f),
32            ECSError::NoComponentForEntity => {
33                Display::fmt("part map does not contain part for entity", f)
34            }
35            ECSError::WithAfterFinalise => Display::fmt("use of .with() after .finalise()", f),
36            ECSError::FinaliseNonEntity => {
37                Display::fmt("can not finalise() without new_entity()", f)
38            }
39            ECSError::BitMasksExhausted => {
40                Display::fmt("bitmasks exhausted, can't add new component type", f)
41            }
42            ECSError::AddDupeComponent => {
43                Display::fmt("attempted to add duplicate component to entity", f)
44            }
45        }
46    }
47}
48
49impl Error for ECSError {}
tiny_ecs/errors.rs

tiny_ecs/
errors.rs
