common

Documentation

Index

• Constants
• Variables
• func CopyBytes(b []byte) (copiedBytes []byte)
• func FromHex(s string) []byte
• func Hex2Bytes(str string) []byte
• func LeftPadBytes(slice []byte, l int) []byte
• type Hash
  • func BigToHash(b *big.Int) Hash
  • func BytesToHash(b []byte) Hash
  • func HexToHash(s string) Hash
  • func (h Hash) Bytes() []byte
  • func (h Hash) Hex() string
  • func (h *Hash) SetBytes(b []byte)
  • func (h Hash) String() string
• type StorageSize
  • func (s StorageSize) String() string
  • func (s StorageSize) TerminalString() string

Constants

const (
	// HashLength is the expected length of the hash
	HashLength = 32
)

Lengths of hashes and addresses in bytes.

Variables

var (
	Big1   = big.NewInt(1)
	Big2   = big.NewInt(2)
	Big3   = big.NewInt(3)
	Big0   = big.NewInt(0)
	Big32  = big.NewInt(32)
	Big256 = big.NewInt(256)
	Big257 = big.NewInt(257)
)

Common big integers often used

Functions

func CopyBytes

func CopyBytes(b []byte) (copiedBytes []byte)

CopyBytes returns an exact copy of the provided bytes.

func FromHex

func FromHex(s string) []byte

FromHex returns the bytes represented by the hexadecimal string s. s may be prefixed with "0x".

func Hex2Bytes

func Hex2Bytes(str string) []byte

Hex2Bytes returns the bytes represented by the hexadecimal string str.

func LeftPadBytes

func LeftPadBytes(slice []byte, l int) []byte

LeftPadBytes zero-pads slice to the left up to length l.

Types

type Hash

type Hash [HashLength]byte

Hash represents the 32 byte Keccak256 hash of arbitrary data.

func BigToHash

func BigToHash(b *big.Int) Hash

BigToHash sets byte representation of b to hash. If b is larger than len(h), b will be cropped from the left.

func BytesToHash

func BytesToHash(b []byte) Hash

BytesToHash sets b to hash. If b is larger than len(h), b will be cropped from the left.

func HexToHash

func HexToHash(s string) Hash

HexToHash sets byte representation of s to hash. If b is larger than len(h), b will be cropped from the left.

func (Hash) Bytes

func (h Hash) Bytes() []byte

Bytes gets the byte representation of the underlying hash.

func (Hash) Hex

func (h Hash) Hex() string

Hex converts a hash to a hex string.

func (*Hash) SetBytes

func (h *Hash) SetBytes(b []byte)

SetBytes sets the hash to the value of b. If b is larger than len(h), b will be cropped from the left.

func (Hash) String

func (h Hash) String() string

String implements the stringer interface and is used also by the logger when doing full logging into a file.

type StorageSize

type StorageSize float64

StorageSize is a wrapper around a float value that supports user friendly formatting.

func (StorageSize) String

func (s StorageSize) String() string

String implements the stringer interface.

func (StorageSize) TerminalString

func (s StorageSize) TerminalString() string

TerminalString implements log.TerminalStringer, formatting a string for console output during logging.