util

package
v0.3.7 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Oct 13, 2022 License: Apache-2.0, BSD-2-Clause Imports: 20 Imported by: 5

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	Big0       = big.NewInt(0)
	Big1       = big.NewInt(1)
	MaxUint256 = new(big.Int).Sub(new(big.Int).Lsh(Big1, 256), Big1)
)

Functions

func AliasIDFromAliasOutput added in v0.3.0 

func AliasIDFromAliasOutput(out *iotago.AliasOutput, outID iotago.OutputID) iotago.AliasID

func AllDifferentStrings added in v0.2.0 

func AllDifferentStrings(lst ...string) bool

func BaseTokensDecimalsToEthereumDecimals added in v0.3.6 

func BaseTokensDecimalsToEthereumDecimals(value *big.Int, baseTokenDecimals int64) *big.Int

base token => wei

func Bytes 

func Bytes(obj interface{ Write(io.Writer) error }) ([]byte, error)

func EthereumDecimalsToBaseTokenDecimals added in v0.3.6 

func EthereumDecimalsToBaseTokenDecimals(value *big.Int, baseTokenDecimals int64) *big.Int

wei => base token

func ExistsFilePath added in v0.1.0 

func ExistsFilePath(filePath string) (bool, error)

ExistsFilePath returns whether the given file or directory exists.

func GentleTruncate added in v0.1.0 

func GentleTruncate(s string, length int) string

func GetHashValue 

func GetHashValue(obj interface{ Bytes() []byte }) hashing.HashValue

func Int32To4Bytes added in v0.2.0 

func Int32To4Bytes(val int32) []byte

func Int64From8Bytes added in v0.1.0 

func Int64From8Bytes(b []byte) (int64, error)

func Int64To8Bytes added in v0.2.0 

func Int64To8Bytes(val int64) []byte

func IsSubset added in v0.2.0 

func IsSubset(sub, super []string) bool

func IsZeroBigInt added in v0.3.0 

func IsZeroBigInt(bi *big.Int) bool

func LocateFile added in v0.1.0 

func LocateFile(fileName string, relativePath ...string) string

func MakeRange added in v0.2.0 

func MakeRange(from, to int) []int

MakeRange returns slice with a range of elements starting from to up to from-1, inclusive

func MinUint64 added in v0.3.0 

func MinUint64(a, b uint64) uint64

func MustBytes 

func MustBytes(obj interface{ Write(io.Writer) error }) []byte

func MustTokenScheme added in v0.3.0 

func MustTokenScheme(tokenScheme iotago.TokenScheme) *iotago.SimpleTokenScheme

func MustUint16From2Bytes added in v0.1.0 

func MustUint16From2Bytes(b []byte) uint16

func MustUint32From4Bytes added in v0.1.0 

func MustUint32From4Bytes(b []byte) uint32

func MustUint64From8Bytes added in v0.1.0 

func MustUint64From8Bytes(b []byte) uint64

func MustUint8From1Bytes added in v0.2.3 

func MustUint8From1Bytes(b []byte) uint8

func NFTIDFromNFTOutput added in v0.3.0 

func NFTIDFromNFTOutput(out *iotago.NFTOutput, outID iotago.OutputID) iotago.NFTID

func ReadBoolByte 

func ReadBoolByte(r io.Reader, cond *bool) error

func ReadByte 

func ReadByte(r io.Reader) (byte, error)

func ReadBytes16 

func ReadBytes16(r io.Reader) ([]byte, error)

func ReadBytes16FromMarshalUtil added in v0.3.0 

func ReadBytes16FromMarshalUtil(mu *marshalutil.MarshalUtil) ([]byte, error)

func ReadBytes32 

func ReadBytes32(r io.Reader) ([]byte, error)

func ReadBytes8 added in v0.3.0 

func ReadBytes8(r io.Reader) ([]byte, error)

func ReadBytes8FromMarshalUtil added in v0.3.0 

func ReadBytes8FromMarshalUtil(mu *marshalutil.MarshalUtil) ([]byte, error)

func ReadHashValue 

func ReadHashValue(r io.Reader, h *hashing.HashValue) error

func ReadInt32 added in v0.2.0 

func ReadInt32(r io.Reader, pval *int32) error

func ReadInt64 

func ReadInt64(r io.Reader, pval *int64) error

func ReadIntsAsBits added in v0.3.0 

func ReadIntsAsBits(r io.Reader) ([]int, error)

func ReadMarshaled added in v0.1.0 

func ReadMarshaled(r io.Reader, val encoding.BinaryUnmarshaler) error

ReadMarshaled supports kyber.Point, kyber.Scalar and similar.

func ReadOutputID added in v0.2.0 

func ReadOutputID(r io.Reader) (*iotago.UTXOInput, error)

func ReadString16 

func ReadString16(r io.Reader) (string, error)

func ReadStrings16 

func ReadStrings16(r io.Reader) ([]string, error)

func ReadTime 

func ReadTime(r io.Reader, ts *time.Time) error

func ReadTransactionID added in v0.3.0 

func ReadTransactionID(r io.Reader, txid *iotago.TransactionID) error

func ReadUint16 

func ReadUint16(r io.Reader, pval *uint16) error

func ReadUint32 

func ReadUint32(r io.Reader, pval *uint32) error

func ReadUint64 

func ReadUint64(r io.Reader, pval *uint64) error

func ReadUint8 added in v0.2.3 

func ReadUint8(r io.Reader, pval *uint8) error

func SelectDeterministicRandomUint16 added in v0.2.0 

func SelectDeterministicRandomUint16(selectFrom []uint16, seed int64) uint16

func StringInList added in v0.2.0 

func StringInList(s string, lst []string) bool

func TerminateCmdWhenTestStops added in v0.3.0 

func TerminateCmdWhenTestStops(cmd *exec.Cmd)

func ToBigInt added in v0.3.0 

func ToBigInt(i interface{}) *big.Int

func Uint16From2Bytes 

func Uint16From2Bytes(b []byte) (uint16, error)

func Uint16To2Bytes 

func Uint16To2Bytes(val uint16) []byte

func Uint32From4Bytes 

func Uint32From4Bytes(b []byte) (uint32, error)

func Uint32To4Bytes 

func Uint32To4Bytes(val uint32) []byte

func Uint64From8Bytes 

func Uint64From8Bytes(b []byte) (uint64, error)

func Uint64To8Bytes 

func Uint64To8Bytes(val uint64) []byte

func Uint8From1Bytes added in v0.2.3 

func Uint8From1Bytes(b []byte) (uint8, error)

func Uint8To1Bytes added in v0.2.3 

func Uint8To1Bytes(val uint8) []byte

func ValidPermutation 

func ValidPermutation(perm []uint16) bool

func WriteBoolByte 

func WriteBoolByte(w io.Writer, cond bool) error

func WriteByte 

func WriteByte(w io.Writer, val byte) error

func WriteBytes16 

func WriteBytes16(w io.Writer, data []byte) error

func WriteBytes16ToMarshalUtil added in v0.3.0 

func WriteBytes16ToMarshalUtil(data []byte, mu *marshalutil.MarshalUtil)

func WriteBytes32 

func WriteBytes32(w io.Writer, data []byte) error

func WriteBytes8 added in v0.3.0 

func WriteBytes8(w io.Writer, data []byte) error

func WriteBytes8ToMarshalUtil added in v0.3.0 

func WriteBytes8ToMarshalUtil(data []byte, mu *marshalutil.MarshalUtil)

func WriteInt64 

func WriteInt64(w io.Writer, val int64) error

func WriteIntsAsBits added in v0.3.0 

func WriteIntsAsBits(w io.Writer, ints []int) error

func WriteMarshaled added in v0.1.0 

func WriteMarshaled(w io.Writer, val encoding.BinaryMarshaler) error

WriteMarshaled supports kyber.Point, kyber.Scalar and similar.

func WriteOutputID added in v0.3.0 

func WriteOutputID(w io.Writer, oid *iotago.UTXOInput) error

func WriteString16 

func WriteString16(w io.Writer, str string) error

func WriteStrings16 

func WriteStrings16(w io.Writer, strs []string) error

func WriteTime 

func WriteTime(w io.Writer, ts time.Time) error

func WriteUint16 

func WriteUint16(w io.Writer, val uint16) error

func WriteUint32 

func WriteUint32(w io.Writer, val uint32) error

func WriteUint64 

func WriteUint64(w io.Writer, val uint64) error

func WriteUint8 added in v0.2.3 

func WriteUint8(w io.Writer, val uint8) error

Types

type BitVector added in v0.3.0 

type BitVector interface {
	SetBits(positions []int) BitVector
	AsInts() []int
	Bytes() []byte
}

func NewFixedSizeBitVector added in v0.3.0 

func NewFixedSizeBitVector(size int) BitVector

func NewFixedSizeBitVectorFromMarshalUtil added in v0.3.0 

func NewFixedSizeBitVectorFromMarshalUtil(mu *marshalutil.MarshalUtil) (BitVector, error)

type Permutation16 

type Permutation16 struct {
	// contains filtered or unexported fields
}

Permutation16 deterministic permutation of integers from 0 to size-1

func NewPermutation16 

func NewPermutation16(size uint16, seedOptional ...int64) (*Permutation16, error)

Seed should be provided in tests only to obtain predicted test results. If used in production, the seed should not be set, because it will be generated using cryptographically secure random number generator. Unless the permutations must be exactly the same between different calls (probable from different nodes). In the latter case, the seed should be the same for all the calls which expect the same permutation. This function allways returns a permutation; error should be considered as a warning that permutation was seeded incorrectly.

func (*Permutation16) Current 

func (perm *Permutation16) Current() uint16

func (*Permutation16) ForEach added in v0.3.0 

func (perm *Permutation16) ForEach(f func(i uint16) bool)

func (*Permutation16) GetArray 

func (perm *Permutation16) GetArray() []uint16

func (*Permutation16) Next 

func (perm *Permutation16) Next() uint16

func (*Permutation16) NextNoCycles added in v0.3.0 

func (perm *Permutation16) NextNoCycles() uint16

If the whole permutation is obtained, reshuffles it to avoid cycles

func (*Permutation16) Shuffle 

func (perm *Permutation16) Shuffle() *Permutation16

type Ratio32 added in v0.3.0 

type Ratio32 struct {
	A uint32
	B uint32
}

Ratio32 represents a ratio (a:b) between two quantities, expressed as two uint32 values.

func Ratio32FromBytes added in v0.3.0 

func Ratio32FromBytes(bytes []byte) (Ratio32, error)

func (Ratio32) Bytes added in v0.3.0 

func (r Ratio32) Bytes() []byte

func (*Ratio32) Set added in v0.3.0 

func (r *Ratio32) Set(s string) error

Set is part of the pflag.Value interface. It accepts a string in the form "a:b".

func (Ratio32) String added in v0.3.0 

func (r Ratio32) String() string

func (Ratio32) Type added in v0.3.0 

func (r Ratio32) Type() string

Type is part of the pflag.Value interface.

func (Ratio32) XCeil64 added in v0.3.0 

func (r Ratio32) XCeil64(y uint64) uint64

XCeil64 computes x = ceil(y * a / b)

func (Ratio32) XFloor64 added in v0.3.0 

func (r Ratio32) XFloor64(y uint64) uint64

XFloor64 computes x = floor(y * a / b)

func (Ratio32) YCeil64 added in v0.3.0 

func (r Ratio32) YCeil64(x uint64) uint64

YCeil64 computes y = ceil(x * b / a)

func (Ratio32) YFloor64 added in v0.3.0 

func (r Ratio32) YFloor64(x uint64) uint64

YFloor64 computes y = floor(x * b / a)

type Timer added in v0.3.0 

type Timer time.Time

func NewTimer added in v0.3.0 

func NewTimer() Timer

func (Timer) Duration added in v0.3.0 

func (t Timer) Duration() time.Duration

type WaitChan added in v0.1.0 

type WaitChan struct {
	// contains filtered or unexported fields
}

WaitChan is something similar to sync.WaitGroup, just is based on channels and supports waiting with timeout.

func NewWaitChan added in v0.1.0 

func NewWaitChan() *WaitChan

func (*WaitChan) Done added in v0.1.0 

func (c *WaitChan) Done()

func (*WaitChan) Reset added in v0.1.0 

func (c *WaitChan) Reset()

func (*WaitChan) Wait added in v0.1.0 

func (c *WaitChan) Wait()

func (*WaitChan) WaitTimeout added in v0.1.0 

func (c *WaitChan) WaitTimeout(timeout time.Duration) bool

Source Files

View all Source files

Directories

Path Synopsis
package implement a simple primitive to wait for readiness of concurrent modules
 package implement a simple primitive to wait for readiness of concurrent modules
package implements simple semaphore with timeout
 package implements simple semaphore with timeout

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