gear_objects/
component_id.rs

1use arraystring::{typenum::U16, ArrayString};
2use core::sync::atomic::AtomicU32;
3use std::fmt::{self, Formatter};
4use std::sync::atomic::Ordering;
5
6type TagStr = ArrayString<U16>;
7
8/// Used to identify components.
9#[derive(Copy, Clone, Eq, Hash, Ord, PartialEq, PartialOrd)]
10pub struct ComponentId {
11    #[cfg(debug_assertions)]
12    tag: TagStr,
13
14    id: u32,
15}
16
17impl ComponentId {
18    #[cfg(debug_assertions)]
19    pub fn new(tag: &str, value: u32) -> ComponentId {
20        ComponentId {
21            tag: TagStr::from_str_truncate(tag),
22            id: value,
23        }
24    }
25
26    #[cfg(not(debug_assertions))]
27    pub fn new(_tag: &str, value: u32) -> ComponentId {
28        Oid { id: value }
29    }
30}
31
32static NEXT_COMPONENT_ID: AtomicU32 = AtomicU32::new(1);
33
34#[doc(hidden)]
35#[cfg(debug_assertions)]
36pub fn next_component_id(tag: &str) -> ComponentId {
37    ComponentId::new(tag, NEXT_COMPONENT_ID.fetch_add(1, Ordering::Relaxed))
38}
39
40#[doc(hidden)]
41#[cfg(not(debug_assertions))]
42pub fn next_component_id(_tag: &str) -> ComponentId {
43    ComponentId::new(NEXT_COMPONENT_ID.fetch_add(1, Ordering::Relaxed))
44}
45
46impl fmt::Debug for ComponentId {
47    #[cfg(debug_assertions)]
48    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
49        write!(f, "{}#{}", self.tag, self.id)
50    }
51
52    #[cfg(not(debug_assertions))]
53    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
54        write!(f, "#{}", self.id)
55    }
56}
57
58impl fmt::Display for ComponentId {
59    #[cfg(debug_assertions)]
60    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
61        write!(f, "{}#{}", self.tag, self.id)
62    }
63
64    #[cfg(not(debug_assertions))]
65    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
66        write!(f, "#{}", self.id)
67    }
68}
gear_objects/component_id.rs

gear_objects/
component_id.rs
