Trait TransactionExtension 

pub trait TransactionExtension<T>: ExtrinsicParams<T>
where
    T: Config,
{
    type Decoded: DecodeAsType;

    // Required method
    fn matches(
        identifier: &str,
        _type_id: u32,
        _types: &PortableRegistry,
    ) -> bool;
}

A single TransactionExtension has a unique name, but is otherwise the same as ExtrinsicParams in describing how to encode the extra and additional data.

Required Associated Types

type Decoded: DecodeAsType

The type representing the extra / value bytes of a transaction extension. Decoding from this type should be symmetrical to the respective ExtrinsicParamsEncoder::encode_value_to() implementation of this transaction extension.

Required Methods

fn matches(identifier: &str, _type_id: u32, _types: &PortableRegistry) -> bool

This should return true if the transaction extension matches the details given. Often, this will involve just checking that the identifier given matches that of the extension in question.

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.

Implementations on Foreign Types

impl<T> TransactionExtension<T> for CheckAppId

where T: Config,

type Decoded = Compact<u32>

fn matches(identifier: &str, _type_id: u32, _types: &PortableRegistry) -> bool

Implementors

impl<T> TransactionExtension<T> for ChargeAssetTxPayment<T>

where T: Config,

type Decoded = ChargeAssetTxPayment<T>

impl<T> TransactionExtension<T> for ChargeTransactionPayment

where T: Config,

type Decoded = ChargeTransactionPayment

impl<T> TransactionExtension<T> for CheckGenesis<T>

where T: Config,

type Decoded = ()

impl<T> TransactionExtension<T> for CheckMetadataHash

where T: Config,

type Decoded = CheckMetadataHashMode

impl<T> TransactionExtension<T> for CheckMortality<T>

where T: Config,

type Decoded = Era

impl<T> TransactionExtension<T> for CheckNonce

where T: Config,

type Decoded = u64

impl<T> TransactionExtension<T> for CheckSpecVersion

where T: Config,

type Decoded = ()

impl<T> TransactionExtension<T> for CheckTxVersion

where T: Config,

type Decoded = ()

impl<T> TransactionExtension<T> for VerifySignature<T>

where T: Config,

type Decoded = Static<VerifySignatureDetails<T>>