Trait ContractRevert 

pub trait ContractRevert:
    AbiDecode
    + AbiEncode
    + Send
    + Sync {
    // Required method
    fn valid_selector(selector: [u8; 4]) -> bool;

    // Provided method
    fn decode_with_selector(data: &[u8]) -> Option<Self> { ... }
}

A trait for enums unifying EthError types. This trait is usually used to represent the errors that a specific contract might throw. I.e. all solidity custom errors + revert strings.

This trait should be accessed via crate::ContractError::decode_contract_revert. It is generally unnecessary to import this trait into your code.

Implementor’s Note

We do not recommend manual implementations of this trait. Instead, use the automatically generated implementation in the crate::abigen macro

However, sophisticated users may wish to represent the errors of multiple contracts as a single unified enum. E.g. if your contract calls Uniswap, you may wish to implement this on pub enum MyContractOrUniswapErrors. In that case, it should be straightforward to delegate to the inner types.

Required Methods

fn valid_selector(selector: [u8; 4]) -> bool

true if the selector corresponds to an error that this contract can revert. False otherwise

Provided Methods

fn decode_with_selector(data: &[u8]) -> Option<Self>

Decode the error from EVM revert data including an Error selector

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