[][src]Crate amplify_derive

Amplifying Rust language capabilities: multiple generic trait implementations, type wrappers, derive macros.

Derive Macros

AsAny

Trait [amplify::AsAny] allows simple conversion of any type into a generic "thick" pointer &dyn Any (see ::core::any::Any), that can be later converted back to the original type with a graceful failing for all other conversions. AsAny derive macro allows to implement this trait for arbitrary time without much hussle:

Display

Usage

Error

Error derive macro works to the full extend only when other derive macros are used. With #[derive(Display)] and [display(doc_comments)] it uses doc comments for generating error descriptions; with #[derive(From)] it may automatically implement transofrations from other error types.

From

Implements From trait for the whole entity and/or its separate fields. Works well with #[derive(Error)] and, in many cases may require Default implementation (for details, pls see Examples below)

Getters

Creates getter methods matching field names for all fields within a structure (including public and private fields). Getters return reference types.

Wrapper

Creates rust new type wrapping existing type. Can be used in sturctures containing multiple named or unnamed fields; in this case the field you'd like to wrap should be marked with #[wrap] attribute; otherwise the first field is assumed to be the wrapped one.