Crate gratte_macros

gratte (a strum fork)

gratte is a fork of strum. It defines a set of macros and traits for working with enums and strings easier in Rust.

This crate only contains derive macros for use with the gratte crate. The macros provided by this crate are available by enabling the derive feature in the aforementioned gratte crate (which it is by default).

Derive Macros

AsRefStr

Converts enum variants to &'a str, where 'a is the lifetime of the input enum reference.

Display

Converts enum variants to strings.

EnumCount

Add a constant usize equal to the number of variants.

EnumDiscriminants

Generate a new type with only the discriminant names.

EnumIs

Generated is_*() methods for each variant. E.g. Color.is_red().

EnumIter

Creates a new type that iterates over the variants of an enum.

EnumMessage

Add a verbose message to an enum variant.

EnumProperty

Add custom properties to enum variants.

EnumString

Converts strings to enum variants based on their name.

EnumTryAs

Generated try_as_*() methods for all tuple-style variants. E.g. Message.try_as_write().

FromRepr

Add a function to enum that allows accessing variants by its discriminant

IntoStaticStr

Implements From<MyEnum> for &'static str on an enum.

VariantArray

Adds a 'static slice with all the Enum’s variants.

VariantNames

Implements gratte::VariantNames which adds an associated constant VARIANTS which is a 'static slice of discriminant names.