Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

2.0.1 - 2025-01-06

Change

• Updated how code conditioned on the sync flag is written in the crate documentation to work around a crates.io doc rendering bug.

2.0.0 - 2025-01-06

Added

• Gated the sync/Arc downcasting functionality behind a new sync feature that is enabled by default.
• Added a new DowncastSend trait to support downcasting to Box<Any + Send> and made DowncastSync extend this trait.
• Added downcasting support to Box<Any + Send + Sync> to DowncastSync.

Change

• Updated minimum supported rust version 1.56 to enforce the rustdoc::bare_urls lint (1.53) and switch to edition 2021 (1.56).

1.2.1 - 2024-04-06

Change

• Consolidated bounds on the trait to avoid triggering Clippy's multiple_bound_locations lint.

1.2.0 - 2020-06-29

Added

• no_std support.
• CI with GitHub actions.

Changed

• Updated minimum supported rust version 1.36 for stable access to alloc.

1.1.1 - 2019-10-28

Changed

• Used dyn Trait syntax everywhere since it is supported by downcast-rs's min-supported rust version (1.33).

1.1.0 - 2019-10-07

Added

• Support for downcasting Rc<Trait> and Arc<Trait>.

Changed

• Minimum supported Rust version upped to 1.33 to support Rc and Arc in the receiver position.

1.0.4 - 2019-04-08

Changed

• Added local_inner_macros to impl_downcast to allow invoking via namespace.

1.0.3 - 2018-05-21

Fixed

• Use global path for Result, Option, Box in macro expansion to avoid name conflicts with locally-defined symbols.

1.0.2 - 2018-05-12

Added

• Support for downcasting Box<Trait> to Box<Concrete>.

1.0.1 - 2018-03-08

Fixed

• Don't use types as traits in macros.

1.0.0 - 2017-02-05

Changed

• Cleaned up README and published 1.0.

0.1.2 - 2016-11-22

Added

• Support for associated types as well.

0.1.1 - 2016-09-04

Added

• Downcast functionality to downcast borrowed mutable and immutable trait objects to concrete types. Supports concrete type parameters and type variables with optional constraints.