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* WIP: stalled out trying to implement const-fn feature.stable-supportBrian Cully2019-08-061-0/+4
| | | | | | | | | | | | | Unfortunately, to maintain API compatibility, `replace` needs to be a regular borrow, so we need interior mutability with `UnsafeCell`. Simultaneously, `HandlerArray` needs to be `const fn` so it can be used where `lazy_static` isn't available, which means it needs to initialize its array in one go without the help of `MaybeUninit`. To do that, `Handler` must be `Copy`, but since it contains an `UnsafeCell` now, it cannot be copy. And thus we are boned. There are times when I think the premise of rust is admirable, but implementation is impossible.
* WIP: Add `const-fn` feature to attempt support for stable toolchain.Brian Cully2019-07-291-1/+1
| | | | | To get this to work, either `FnMut` traits need to be allowed in `const fn` in stable, or `Handler::new` needs to be non-`const`.
* Update to 0.2.0: Add HandlerArray type.v0.2.0Brian Cully2019-06-031-201/+17
| | | | | | | | | | | | | | * Create HandlerArray as a safe wrapper around Handler. * Add Cargo features for HandlerArray size. * Move Handler into sub-module. * Add CriticalSection sub-module for architecture dependent support of interrupt-free contexts. * Add build rules to pull in cortex-m support for CriticalSection automatically.
* Working handler code.v0.1.0Brian Cully2019-05-101-0/+209