This library provides an alternative to
ghost-cell which uses concrete types instead of lifetimes for branding.
This allows a more convenient usage, where cells and tokens can be constructed independently, with the same compile-time guarantees as
ghost-cell. The trade-off for this arguably more convenient usage and arguably easier to understand branding method is that tokens, while zero-sized if made correctly, must be guaranteed to be constructable only if no other instance exists.
To this end, this crate provides the [
generate_token] macro, which will create a ZST which can only be constructed using [
TokenTrait::aquire], which is generated to guarantee no other token exists before returning the token. This is done by checking a static
AtomicBool flag, which is the only runtime cost of these tokens.
pub use crate::macros::token;