common

package
v1.0.0 Latest Latest
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 Go to latest Published: Apr 12, 2019 License: LGPL-3.0 Imports: 20 Imported by: 0

Documentation

Overview

Package common contains various helper functions.

Index

Constants

View Source 
const (
	HashLength = 32
	// The first two bytes are used to identify the type of the address, and 0x0001 is the normal address.
	AddressLength = 22
	NonceLength   = 32
	DiffLength    = 4
)
View Source 
const (
	AddressTypeNormal      = 0x0000
	AddressTypeCross       = 0x0001
	AddressTypeStake       = 0x0002
	AddressTypeCancel      = 0x0003
	AddressTypeUnStake     = 0x0004
	AddressTypeEvidence    = 0x0005
	AddressTypeERC20       = 0x0010
	AddressTypeEarlyReward = 0x0011
)

address type

View Source 
const (
	AddressStake   = "0x00020000000000000000000000000000000000000000"
	AddressCancel  = "0x00030000000000000000000000000000000000000000"
	AddressUnStake = "0x00040000000000000000000000000000000000000000"
)

Variables

View Source 
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 AbsolutePath 

func AbsolutePath(Datadir string, filename string) string

func Bytes2Hex 

func Bytes2Hex(d []byte) string

func CopyBytes 

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

Copy bytes

Returns an exact copy of the provided bytes

func FileExist 

func FileExist(filePath string) bool

func FromHex 

func FromHex(s string) []byte

func Hex2Bytes 

func Hex2Bytes(str string) []byte

func Hex2BytesFixed 

func Hex2BytesFixed(str string, flen int) []byte

func LeftPadBytes 

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

func LoadJSON 

func LoadJSON(file string, val interface{}) error

LoadJSON reads the given file and unmarshals its content.

func MakeName 

func MakeName(name, version string) string

MakeName creates a node name that follows the ethereum convention for such names. It adds the operation system name and Go runtime version the name.

func RightPadBytes 

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

func ToHex 

func ToHex(b []byte) string

Types

type Address 

type Address [AddressLength]byte

Dipperin Address

func BigToAddress 

func BigToAddress(b *big.Int) Address

func BytesToAddress 

func BytesToAddress(b []byte) (result Address)

func HexToAddress 

func HexToAddress(s string) Address

func StringToAddress 

func StringToAddress(s string) Address

func (Address) Big 

func (addr Address) Big() *big.Int

func (Address) Bytes 

func (addr Address) Bytes() []byte

func (*Address) Clear 

func (addr *Address) Clear()

func (Address) GetAddressType 

func (addr Address) GetAddressType() TxType

GetAddressType get the type of address based on the first two digits of the address

func (Address) GetAddressTypeStr 

func (addr Address) GetAddressTypeStr() string

GetAddressTypeStr get a text description of the address type

func (Address) Hash 

func (addr Address) Hash() Hash

func (Address) Hex 

func (addr Address) Hex() string

func (Address) InSlice 

func (addr Address) InSlice(addresses []Address) bool

func (Address) IsEmpty 

func (addr Address) IsEmpty() bool

func (Address) IsEqual 

func (addr Address) IsEqual(oaddr Address) bool

func (Address) IsEqualWithoutType 

func (addr Address) IsEqualWithoutType(oaddr Address) bool

func (Address) MarshalJSON 

func (addr Address) MarshalJSON() ([]byte, error)

func (*Address) SetBytes 

func (addr *Address) SetBytes(b []byte)

Sets the address to the value of b. If b is larger than len(a) it will panic

func (Address) Str 

func (addr Address) Str() string

Get the string representation of the underlying address

func (Address) String 

func (addr Address) String() string

func (*Address) UnmarshalJSON 

func (addr *Address) UnmarshalJSON(input []byte) error

type BlockNonce 

type BlockNonce [NonceLength]byte

Dipperin Block Nonce

func BlockNonceFromHex 

func BlockNonceFromHex(hexStr string) (result BlockNonce)

func BlockNonceFromInt 

func BlockNonceFromInt(i uint32) (result BlockNonce)

func EncodeNonce 

func EncodeNonce(i uint64) BlockNonce

EncodeNonce converts the given integer to a block nonce.

func (BlockNonce) Hex 

func (bn BlockNonce) Hex() string

calculate hex

func (BlockNonce) IsEqual 

func (bn BlockNonce) IsEqual(obn BlockNonce) bool

Compare block nonce

func (BlockNonce) MarshalJSON 

func (bn BlockNonce) MarshalJSON() ([]byte, error)

func (*BlockNonce) UnmarshalJSON 

func (bn *BlockNonce) UnmarshalJSON(input []byte) error

type Difficulty 

type Difficulty [DiffLength]byte

Dipperin BlockHeader Difficulty

func BigToDiff 

func BigToDiff(b *big.Int) Difficulty

func BytesToDiff 

func BytesToDiff(b []byte) (result Difficulty)

func HexToDiff 

func HexToDiff(s string) Difficulty

func StringToDiff 

func StringToDiff(s string) Difficulty

func (Difficulty) Big 

func (d Difficulty) Big() *big.Int

func (Difficulty) Bytes 

func (d Difficulty) Bytes() []byte

func (Difficulty) DiffToTarget 

func (d Difficulty) DiffToTarget() (target Hash)

func (Difficulty) Equal 

func (d Difficulty) Equal(d2 Difficulty) bool

func (Difficulty) Hex 

func (d Difficulty) Hex() string

func (Difficulty) HexWithout0x 

func (d Difficulty) HexWithout0x() string

func (Difficulty) MarshalJSON 

func (d Difficulty) MarshalJSON() ([]byte, error)

func (*Difficulty) SetBytes 

func (d *Difficulty) SetBytes(b []byte)

func (Difficulty) Str 

func (d Difficulty) Str() string

func (*Difficulty) UnmarshalJSON 

func (d *Difficulty) UnmarshalJSON(input []byte) error

type Hash 

type Hash [HashLength]byte

Dipperin hash

func BigToHash 

func BigToHash(b *big.Int) Hash

func BytesToHash 

func BytesToHash(b []byte) (result Hash)

func CopyHash 

func CopyHash(h *Hash) *Hash

Returns an exact copy of the provided bytes

func HexToHash 

func HexToHash(s string) Hash

func RlpHashKeccak256 

func RlpHashKeccak256(v interface{}) (h Hash)

do rlp hash on an object

func StringToHash 

func StringToHash(s string) Hash

func (Hash) Big 

func (h Hash) Big() *big.Int

func (Hash) Bytes 

func (h Hash) Bytes() []byte

func (*Hash) Clear 

func (h *Hash) Clear()

func (Hash) Cmp 

func (h Hash) Cmp(oh Hash) (res int)

compare hash h with hash oh, if h bigger than oh return 1, if h equal to oh return 0,if h smaller than oh return -1

func (Hash) Hex 

func (h Hash) Hex() string

func (Hash) HexWithout0x 

func (h Hash) HexWithout0x() string

func (Hash) IsEmpty 

func (h Hash) IsEmpty() bool

func (Hash) IsEqual 

func (h Hash) IsEqual(oh Hash) bool

func (Hash) MarshalJSON 

func (h Hash) MarshalJSON() ([]byte, error)

func (*Hash) SetBytes 

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

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

func (Hash) Str 

func (h Hash) Str() string

func (Hash) String 

func (h Hash) String() string

func (*Hash) UnmarshalJSON 

func (h *Hash) UnmarshalJSON(input []byte) error

func (Hash) ValidHashForDifficulty 

func (h Hash) ValidHashForDifficulty(difficulty Difficulty) bool

ValidHashForDifficulty check is it a hash that meets the corresponding difficulty?

type PrettyDuration 

type PrettyDuration time.Duration

PrettyDuration is a pretty printed version of a time.Duration value that cuts the unnecessary precision off from the formatted textual representation.

func (PrettyDuration) String 

func (d PrettyDuration) String() string

String implements the Stringer interface, allowing pretty printing of duration values rounded to three decimals.

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.

type TxType 

type TxType int

func (TxType) String 

func (txType TxType) String() string

type UnprefixedAddress 

type UnprefixedAddress Address

Source Files

View all Source files

Directories

Path Synopsis
Package bitutil implements fast bitwise operations.
 Package bitutil implements fast bitwise operations.
Package hexutil implements hex encoding with 0x prefix.
 Package hexutil implements hex encoding with 0x prefix.
Package math provides integer math utilities.
 Package math provides integer math utilities.
Package mclock is a wrapper for a monotonic clock source
 Package mclock is a wrapper for a monotonic clock source
concurrent-check
json-kv

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