Enum pallet_template::pallet::Error

pub enum Error<T> {
    NoneValue,
    StorageOverflow,
    // some variants omitted
}

Errors that can be returned by this pallet.

Errors tell users that something went wrong so it’s important that their naming is informative. Similar to events, error documentation is added to a node’s metadata so it’s equally important that they have helpful documentation associated with them.

This type of runtime error can be up to 4 bytes in size should you want to return additional information.

Variants

NoneValue

The value retrieved was None as no value was previously set.

StorageOverflow

There was an attempt to increment the value in storage over u32::MAX.

Trait Implementations

impl<T: Config> Debug for Error<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Decode for Error<T>

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T> Encode for Error<T>

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T: Config> From<Error<T>> for &'static str

fn from(err: Error<T>) -> &'static str

Converts to this type from the input type.

impl<T: Config> From<Error<T>> for DispatchError

fn from(err: Error<T>) -> Self

Converts to this type from the input type.

impl<T> PalletError for Error<T>

const MAX_ENCODED_SIZE: usize = 1usize

The maximum encoded size for the implementing type.

impl<T> TypeInfo for Error<T>

where PhantomData<T>: TypeInfo + 'static, T: 'static,

type Identity = Error<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T> EncodeLike for Error<T>