Enum polkadot_service::generic::Preamble
source · pub enum Preamble<Address, Signature, Extension> {
Bare(u8),
Signed(Address, Signature, u8, Extension),
General(u8, Extension),
}
Expand description
A “header” for extrinsics leading up to the call itself. Determines the type of extrinsic and holds any necessary specialized data.
Variants§
Bare(u8)
An extrinsic without a signature or any extension. This means it’s either an inherent or an old-school “Unsigned” (we don’t use that terminology any more since it’s confusable with the general transaction which is without a signature but does have an extension).
NOTE: In the future, once we remove ValidateUnsigned
, this will only serve Inherent
extrinsics and thus can be renamed to Inherent
.
Signed(Address, Signature, u8, Extension)
An old-school transaction extrinsic which includes a signature of some hard-coded crypto. Available only on extrinsic version 4.
General(u8, Extension)
A new-school transaction extrinsic which does not include a signature by default. The origin authorization, through signatures or other means, is performed by the transaction extension in this extrinsic. Available starting with extrinsic version 5.
Implementations§
Trait Implementations§
source§impl<Address, Signature, Extension> Decode for Preamble<Address, Signature, Extension>where
Address: Decode,
Signature: Decode,
Extension: Decode,
impl<Address, Signature, Extension> Decode for Preamble<Address, Signature, Extension>where
Address: Decode,
Signature: Decode,
Extension: Decode,
source§fn decode<I>(
input: &mut I,
) -> Result<Preamble<Address, Signature, Extension>, Error>where
I: Input,
fn decode<I>(
input: &mut I,
) -> Result<Preamble<Address, Signature, Extension>, Error>where
I: Input,
§fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
source§impl<Address, Signature, Extension> Encode for Preamble<Address, Signature, Extension>where
Address: Encode,
Signature: Encode,
Extension: Encode,
impl<Address, Signature, Extension> Encode for Preamble<Address, Signature, Extension>where
Address: Encode,
Signature: Encode,
Extension: Encode,
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
source§fn encode_to<T>(&self, dest: &mut T)where
T: Output + ?Sized,
fn encode_to<T>(&self, dest: &mut T)where
T: Output + ?Sized,
§fn using_encoded<R, F>(&self, f: F) -> R
fn using_encoded<R, F>(&self, f: F) -> R
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
source§impl<Address, Signature, Extension> PartialEq for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> PartialEq for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> Eq for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> StructuralPartialEq for Preamble<Address, Signature, Extension>
Auto Trait Implementations§
impl<Address, Signature, Extension> Freeze for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> RefUnwindSafe for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> Send for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> Sync for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> Unpin for Preamble<Address, Signature, Extension>
impl<Address, Signature, Extension> UnwindSafe for Preamble<Address, Signature, Extension>
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impl<T> CheckedConversion for T
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