Trait DecodeDispatch

pub trait DecodeDispatch: Sized {
    // Required method
    fn decode_dispatch(input: &mut &[u8]) -> Result<Self, DispatchError>;
}

Decodes an ink! dispatch input into a known selector and its expected parameters.

Note

This trait is automatically implemented for ink! message and constructor decoders.

Errors

Returns an error if any of the decode steps failed:

• InvalidSelector: The first four bytes could not properly decoded into the selector.
• UnknownSelector: The decoded selector did not match any of the expected ones.
• InvalidParameters: Failed to decoded the parameters for the selected dispatchable.

The other dispatch errors are handled by other structures usually.

Usage

todo: previous doc test used a contract instance, it was in the ink! crate.

Required Methods

fn decode_dispatch(input: &mut &[u8]) -> Result<Self, DispatchError>

todo: docs

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors