stecs 0.1.2

Experimental static compiler-checked ECS library
Documentation 
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use crate::archetype::{SplitFields, StructOfAble};

use super::*;

unsafe impl<T> Storage<T> for Vec<T> {
    type Family = VecFamily;
    type Id = usize;
    fn insert(&mut self, value: T) -> Self::Id {
        let id = self.len();
        self.push(value);
        id
    }
    fn ids(&self) -> impl Iterator<Item = Self::Id> + Clone {
        // SAFETY: guaranteed validity and uniqueness
        0..self.len()
    }
    fn get(&self, id: Self::Id) -> Option<&T> {
        self.as_slice().get(id)
    }
    fn get_mut(&mut self, id: Self::Id) -> Option<&mut T> {
        self.as_mut_slice().get_mut(id)
    }
    fn remove(&mut self, id: Self::Id) -> Option<T> {
        (id < self.len()).then(|| self.swap_remove(id))
    }
    #[cfg(feature = "query_mut")]
    unsafe fn get_many_unchecked_mut<'a>(
        &'a mut self,
        ids: impl Iterator<Item = Self::Id>,
    ) -> impl Iterator<Item = &'a mut T>
    where
        T: 'a,
    {
        ids.map(move |i| {
            let r = self.get_mut(i).expect("invalid id: entry absent");
            unsafe { &mut *(r as *mut T) }
        })
    }
}

/// Family of [`Vec<T>`] storages.
pub struct VecFamily;

impl StorageFamily for VecFamily {
    type Id = usize;
    type Storage<T> = Vec<T>;
}

impl<T: SplitFields<VecFamily>> StructOfAble for Vec<T> {
    type Struct = T;
    type Family = VecFamily;
}