Struct UseType 

pub struct UseType<Type>(pub PhantomData<Type>);

The UseType pattern is used to implement a CGP abstract type with the specified Type.

When a CGP type component is defined using the #[cgp_type] macro, a provider implementation of UseType is automatically generated. With UseType, users can instantiate an abstract type with the specified Type without having to manually implement the given provider trait.

Example

Given the following type component definition:

#[cgp_type]
pub trait HasNameType {
    type Name;
}

The following UseType implementation would be generated:

impl<Context, Type> NameTypeProvider<Context> for UseType<Type> {
    type Name = Type;
}

Tuple Fields

0: PhantomData<Type>

Trait Implementations

impl<Context, Tag, Type> ProvideType<Context, Tag> for UseType<Type>

type Type = Type

impl<Context, Tag, Type> IsProviderFor<TypeComponent, Context, Tag> for UseType<Type>