Module utils 

Miscellaneous utility helpers.

Modules

bits

Generic scale_bits over bitvec-like BitOrder and BitFormat types.

eth

A couple of convenience types to use for Ethereum style chains.

Structs

AccountId32

A 32-byte cryptographic identifier. This is a simplified version of Substrate’s sp_core::crypto::AccountId32. To obtain more functionality, convert this into that type.

Encoded

Wraps an already encoded byte vector, prevents being encoded as a raw byte vector as part of the transaction payload

H160

Fixed-size uninterpreted hash type with 20 bytes (160 bits) size.

H256

Fixed-size uninterpreted hash type with 32 bytes (256 bits) size.

H512

Fixed-size uninterpreted hash type with 64 bytes (512 bits) size.

RangeMap

A map that associates ranges of keys with values.

RangeMapBuilder

A builder for constructing a RangeMap. Use ``RangeMap::builder()` to create one.

Static

If the type inside this implements Encode, this will implement scale_encode::EncodeAsType. If the type inside this implements Decode, this will implement scale_decode::DecodeAsType.

UncheckedExtrinsic

The unchecked extrinsic from substrate.

WrapperKeepOpaque

A wrapper for any type T which implement encode/decode in a way compatible with Vec<u8>. WrapperKeepOpaque stores the type only in its opaque format, aka as a Vec<u8>. To access the real type T Self::try_decode needs to be used.

Enums

Era

An era to describe the longevity of a transaction.

FetchChainspecError

Possible errors encountered trying to fetch a chain spec from an RPC node.

Maybe

A unit marker enum.

MultiAddress

A multi-format address wrapper for on-chain accounts. This is a simplified version of Substrate’s sp_runtime::MultiAddress.

MultiSignature

Signature container that can store known signature types. This is a simplified version of sp_runtime::MultiSignature. To obtain more functionality, convert this into that type.

No

A unit marker enum.

RangeMapError

An error that can occur when calling RangeMapBuilder::try_add_range().

Yes

A unit marker enum.

Traits

NoMaybe

This is implemented for No and Maybe and allows us to check at runtime which of these types is present.

YesMaybe

This is implemented for Yes and Maybe and allows us to check at runtime which of these types is present.

YesNo

This is implemented for Yes and No and allows us to check at runtime which of these types is present.

Functions

fetch_chainspec_from_rpc_node

Fetch a chain spec from an RPC node at the given URL.

strip_compact_prefix

Decodes a compact encoded value from the beginning of the provided bytes, returning the value and any remaining bytes.

to_hex

A quick helper to encode some bytes to hex.

Type Aliases

KeyedVec

This represents a key-value collection and is SCALE compatible with collections like BTreeMap. This has the same type params as BTreeMap which allows us to easily swap the two during codegen.