hexutil

Documentation

Overview

Package hexutil implements hex encoding with 0x prefix. This encoding is used by the Ethereum RPC API to transport binary data in JSON payloads.

Encoding Rules

All hex data must have prefix "0x".

For byte slices, the hex data must be of even length. An empty byte slice encodes as "0x".

Integers are encoded using the least amount of digits (no leading zero digits). Their encoding may be of uneven length. The number zero encodes as "0x0".

Index

• Variables
• func Decode(input string) ([]byte, error)
• func MustDecode(input string) []byte
• type Bytes

Variables

var (
	ErrEmptyString   = &decError{"empty hex string"}
	ErrSyntax        = &decError{"invalid hex string"}
	ErrMissingPrefix = &decError{"hex string without 0x prefix"}
	ErrOddLength     = &decError{"hex string of odd length"}
	ErrEmptyNumber   = &decError{"hex string \"0x\""}
	// 	ErrLeadingZero   = &decError{"hex number with leading zero digits"}
	ErrUint64Range = &decError{"hex number > 64 bits"}
)

Errors

Functions

func Decode

func Decode(input string) ([]byte, error)

Decode decodes a hex string with 0x prefix.

func MustDecode

func MustDecode(input string) []byte

MustDecode decodes a hex string with 0x prefix. It panics for invalid input.

Types

type Bytes

type Bytes []byte

Bytes is hex bytes.