realloc 0.1.1

A re-implementation of various ::alloc features
Documentation 
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use core::ops::{Deref, DerefMut};

use crate::{Alloc, Allocator};

pub struct Handle<'alloc, T: ?Sized> {
    alloc: Alloc<'alloc, T>,
    allocator: &'alloc dyn Allocator,
}

impl<'alloc, T> Handle<'alloc, T> {
    pub fn new(alloc: Alloc<'alloc, T>, allocator: &'alloc dyn Allocator) -> Self {
        debug_assert!(alloc.brand() == allocator.brand());
        Self { alloc, allocator }
    }

    pub fn cast<Q>(self) -> Handle<'alloc, Q> {
        let Self { alloc, allocator } = self;

        Handle {
            alloc: alloc.cast(),
            allocator,
        }
    }
}

impl<'alloc, T> Deref for Handle<'alloc, T> {
    type Target = Alloc<'alloc, T>;

    fn deref(&self) -> &Self::Target {
        &self.alloc
    }
}

impl<T> DerefMut for Handle<'_, T> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.alloc
    }
}