2 releases
0.1.1 | Sep 28, 2023 |
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0.1.0 | Sep 28, 2023 |
#2995 in Rust patterns
15KB
280 lines
Const Identify
Generates unique ids that can be used at compile time.
Also comes with array and slice types to manage collections of ids.
Usage
#[derive(ConstIdentify)]
pub struct Struct1;
#[derive(ConstIdentify)]
pub struct Struct2;
#[derive(ConstIdentify)]
pub struct Struct3;
// create an ordered id array
// these are arrays of ids that are pre sorted
const ORDERED: OrderedIdArray<2> = ordered_ids![Struct1, Struct1, Struct2];
// create a unique id array
// these are arrays of ids that are guarunteed to be unique
const UNIQUE: UniqueIdArray<3> = match unique_ids![Struct1, Struct2, Struct3] {
Some(unique) => unique,
// compile time panics can be bubbled up preventing compilation if uniqueness is not held
None => panic!("Duplicate ids detected"),
}
// arrays may be compared at compile time using the provided methods
const COMPARE: std::cmp::Ordering = ORDERED.const_cmp_unique(&UNIQUE);
// arrays provide raw access to the underlying slices
const SORTED_SLICE: &'static [ConstId] = ORDERED.as_raw_slice();
// arrays may be converted to special slice types that carry the ordering/uniqueness guaruntee
const ORDERED_SLICE: OrderedIdSlice<'static> = OrderedIdSlice::from_arr(&ORDERED);
const UNIQUE_SLICE: UniqueIdSlice<'static> = UniqueIdSlice::from_arr(&UNIQUE);
MIT LICENSE
Dependencies
~280–730KB
~17K SLoC