[−][src]Trait abi_stable::InterfaceType

pub trait InterfaceType: Sized + 'static + Send + Sync + GetImplFlags + StableAbi {
type Clone;
type Default;
type Display;
type Debug;
type Serialize;
type Eq;
type PartialEq;
type Ord;
type PartialOrd;
type Hash;
type Deserialize;
}

Defines the usable/required traits when creating a VirtualWrapper<Pointer<ZeroSized< ThisType >>> from a type that implements ImplType<Interface= ThisType > .

This trait can only be implemented within the impl_InterfaceType macro, giving a default value to each associated type, so that adding associated types is not a breaking change.

The value of every associated type is True/False.

On True,the trait would be required by and usable in VirtualWrapper.

On False,the trait would not be required by and not usable in VirtualWrapper.

Example


use abi_stable::{
    StableAbi,
    impl_InterfaceType,
    erased_types::InterfaceType,
    type_level::bools::*,
};

#[repr(C)]
#[derive(StableAbi)]
pub struct FooInterface;

impl_InterfaceType!{
    impl InterfaceType for FooInterface {
        type Clone=True;

        type Debug=True;

        /////////////////////////////////////    
        //// defaulted associated types
        /////////////////////////////////////

        // type Default=False;

        // type Display=False;

        // type Serialize=False;

        // type Eq=False;

        // type PartialEq=False;

        // type Ord=False;

        // type PartialOrd=False;

        // type Hash=False;

        // type Deserialize=False;
    }
}