Derive Macro scale_encode::EncodeAsType

#[derive(EncodeAsType)]
{
    // Attributes available to this derive:
    #[encode_as_type]
}

The EncodeAsType derive macro can be used to implement EncodeAsType on structs and enums whose fields all implement EncodeAsType.

Example

use scale_encode as alt_path;
use scale_encode::EncodeAsType;

#[derive(EncodeAsType)]
#[encode_as_type(trait_bounds = "", crate_path = "alt_path")]
struct Foo<T> {
   a: u64,
   b: bool,
   c: std::marker::PhantomData<T>
}

Attributes

• #[encode_as_type(crate_path = "::path::to::scale_encode")]: By default, the macro expects scale_encode to be a top level dependency, available as ::scale_encode. If this is not the case, you can provide the crate path here.
• #[encode_as_type(trait_bounds = "T: Foo, U::Input: EncodeAsType")]: By default, for each generate type parameter, the macro will add trait bounds such that these type parameters must implement EncodeAsType too. You can override this behaviour and provide your own trait bounds instead using this option.

Limitations

The generated EncodeAsType impls currently support a maximum of 32 fields in the struct or variant; if you exceed this number you’ll hit a compile error.