lib

package
v0.0.0-...-baf6593 Latest Latest
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 Go to latest Published: Dec 21, 2023 License: AGPL-3.0 Imports: 16 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	OneMillion        = uint32(1_000_000)
	TenThousand       = uint32(10_000)
	OneHundred        = uint32(100)
	MaxPriceChangePpm = uint32(10_000)
	// 10^6 quantums == 1 USD.
	QuoteCurrencyAtomicResolution = int32(-6)

	ZeroUint64 = uint64(0)

	// 10^BaseDenomExponent denotes how much full coin is represented by 1 base denom.
	BaseDenomExponent = -18
	DefaultBaseDenom  = "adv4tnt"
)
View Source 
const (
	AvgInt32MaxArrayLength = 2 << 31
)

Variables

View Source 
var (
	// GovModuleAddress is the module address for the gov module.
	GovModuleAddress = authtypes.NewModuleAddress(govtypes.ModuleName)
)
View Source 
var PowerReduction = sdkmath.NewIntFromBigInt(
	new(big.Int).SetUint64(1_000_000_000_000_000_000),
)

PowerReduction defines the default power reduction value for staking. Use 1e18, since default stake denom is assumed to be 1e-18 of a full coin.

Functions

func AbsDiffUint64 

func AbsDiffUint64(x uint64, y uint64) uint64

func AbsInt32 

func AbsInt32(i int32) uint32

func AbsInt64 

func AbsInt64(i int64) uint64

func AddUint32 

func AddUint32(a int64, b uint32) (int64, error)

AddUint32 returns the sum of a and b. If the sum underflows or overflows, this method returns an error.

func AssertCheckTxMode 

func AssertCheckTxMode(ctx sdk.Context)

func AssertDeliverTxMode 

func AssertDeliverTxMode(ctx sdk.Context)

func AvgInt32 

func AvgInt32(nums []int32) int32

AvgInt32 returns average of the input int32 array. Result is rounded towards zero. Note: this method panics if the input array length exceeds AvgInt32MaxArrayLength, or if the result causes an int32 overflow.

func BaseToQuoteQuantums 

func BaseToQuoteQuantums(
	bigBaseQuantums *big.Int,
	baseCurrencyAtomicResolution int32,
	priceValue uint64,
	priceExponent int32,
) (bigNotional *big.Int)

BaseToQuoteQuantums converts an amount denoted in base quantums, to an equivalent amount denoted in quote quantums. To determine the equivalent amount, an oracle price is used.

  • `priceValue * 10^priceExponent` represents the conversion rate from one full coin of base currency to one full coin of quote currency.
  • `10^baseCurrencyAtomicResolution` represents the amount of one full coin that a base quantum is equal to.
  • `10^quoteCurrencyAtomicResolution` represents the amount of one full coin that a quote quantum is equal to.

To convert from base to quote quantums, we use the following equation: 

quoteQuantums =
  (baseQuantums * 10^baseCurrencyAtomicResolution) *
  (priceValue * 10^priceExponent) /
  (10^quoteCurrencyAtomicResolution)
=
  baseQuantums * priceValue *
  10^(priceExponent + baseCurrencyAtomicResolution - quoteCurrencyAtomicResolution) [expression 1]

The result is rounded down.

func BigFloat0 

func BigFloat0() *big.Float

BigFloat0 returns a `big.Float` that is set to 0.

func BigFloatMaxUint64 

func BigFloatMaxUint64() *big.Float

BigFloatMaxUint64 returns a `big.Float` that is set to MaxUint64.

func BigInt0 

func BigInt0() *big.Int

BigInt0 returns a `big.Int` that is set to 0.

func BigInt32Clamp 

func BigInt32Clamp(n *big.Int, lowerBound, upperBound int32) int32

BigInt32Clamp takes a `big.Int` as input, and `int32` upper and lower bounds. It returns `int32` bounded within the upper and lower bound, inclusive. Note that if there is overlap between the bounds (`lower > upper`), this function will do the following: - If `n < lower`, the lower bound is returned. - Else, the upper bound is returned (since `n >= lower`, then `n > upper` must be true).

func BigIntClamp 

func BigIntClamp(n *big.Int, lowerBound *big.Int, upperBound *big.Int) *big.Int

See `bigGenericClamp` for specification.

func BigIntMulPpm 

func BigIntMulPpm(input *big.Int, ppm uint32) *big.Int

BigIntMulPpm takes a `big.Int` and returns the result of `input * ppm / 1_000_000`. This method rounds towards negative infinity.

func BigIntMulSignedPpm 

func BigIntMulSignedPpm(input *big.Int, ppm int32, roundUp bool) *big.Int

BigIntMulSignedPpm takes a `big.Int` and returns the result of `input * ppm / 1_000_000`.

func BigIntOneMillion 

func BigIntOneMillion() *big.Int

BigIntOneMillion returns a `big.Int` that is set to 1_000_000.

func BigIntOneTrillion 

func BigIntOneTrillion() *big.Int

BigIntOneTrillion returns a `big.Int` that is set to 1_000_000_000_000.

func BigIntRoundToMultiple 

func BigIntRoundToMultiple(
	n *big.Int,
	multiple *big.Int,
	roundUp bool,
) *big.Int

BigIntRoundToMultiple takes an input, a multiple, and a direction to round (true for up, false for down). It returns a rounded result such that it is evenly divided by `multiple`. This function always expects the `multiple` parameter to be positive, otherwise it will panic.

func BigMax 

func BigMax(a, b *big.Int) *big.Int

BigMax takes two `big.Int` as parameters and returns the larger one.

func BigMaxInt32 

func BigMaxInt32() *big.Int

BigMaxInt32 returns a `big.Int` that represents `MaxInt32`.

func BigMin 

func BigMin(a, b *big.Int) *big.Int

BigMin takes two `big.Int` as parameters and returns the smaller one.

func BigMulPow10 

func BigMulPow10(
	val *big.Int,
	exponent int32,
) (
	result *big.Rat,
)

BigMulPow10 returns the result of `val * 10^exponent`, in *big.Rat.

func BigNegMaxUint64 

func BigNegMaxUint64() *big.Int

BigNegMaxUint64 returns a `big.Int` that is set to -math.MaxUint64.

func BigPow10 

func BigPow10(exponent uint64) *big.Int

BigPow10 returns the result of `10^exponent`. Caches all calculated values and re-uses cached values in any following calls to BigPow10.

func BigRat0 

func BigRat0() *big.Rat

BigRat0 returns a `big.Rat` that is set to 0.

func BigRat1 

func BigRat1() *big.Rat

BigRat1 returns a `big.Rat` that is set to 1.

func BigRatClamp 

func BigRatClamp(n *big.Rat, lowerBound *big.Rat, upperBound *big.Rat) *big.Rat

See `bigGenericClamp` for specification.

func BigRatMulPpm 

func BigRatMulPpm(input *big.Rat, ppm uint32) *big.Rat

BigRatMulPpm takes a `big.Rat` and returns the result of `input * ppm / 1_000_000`.

func BigRatOneMillion 

func BigRatOneMillion() *big.Rat

BigRatOneMillion returns a `big.Rat` that is set to 1_000_000.

func BigRatRound 

func BigRatRound(n *big.Rat, roundUp bool) *big.Int

BigRatRound takes an input and a direction to round (true for up, false for down). It returns the result rounded to a `*big.Int` in the specified direction.

func BigUint64Clamp 

func BigUint64Clamp(n *big.Int, lowerBound, upperBound uint64) uint64

BigUint64Clamp takes a `big.Int` as input, and `uint64` upper and lower bounds. It returns `uint64` bounded within the upper and lower bound, inclusive. Note that if there is overlap between the bounds (`lower > upper`), this function will do the following: - If `n < lower`, the lower bound is returned. - Else, the upper bound is returned (since `n >= lower`, then `n > upper` must be true).

func ChangeRateUint64 

func ChangeRateUint64(originalV uint64, newV uint64) (float32, error)

ChangeRateUint64 returns the rate of change between the original and the new values. result = (new - original) / original Note: the return value is truncated to fit float32 precision.

func ContainsDuplicates 

func ContainsDuplicates[V comparable](values []V) bool

ContainsDuplicates returns true if the slice contains duplicates, false if not.

func ConvertBigFloatSliceToUint64Slice 

func ConvertBigFloatSliceToUint64Slice(values []*big.Float) ([]uint64, error)

ConvertBigFloatSliceToUint64Slice attempts to convert all values in a slice from big Float to uint64 and return an error if any conversions fail. Note: during conversion, will always round down.

func ConvertBigFloatToUint64 

func ConvertBigFloatToUint64(value *big.Float) (uint64, error)

ConvertBigFloatToUint64 attempts to convert a big Float into a uint64 and returns an error if the conversion would fail. Note: during conversion, will always round down.

func ConvertStringSliceToBigFloatSlice 

func ConvertStringSliceToBigFloatSlice(values []string) ([]*big.Float, error)

ConvertStringSliceToBigFloatSlice attempts to convert all values in a slice from string to big Float and return an error if any conversions fail.

func FilterSlice 

func FilterSlice[V any](values []V, filterFunc func(V) bool) []V

FilterSlice takes a function that returns a boolean on whether to include the element in the final result, and returns a slice of elements where the function returned true when called with each element.

func FundingRateToIndex 

func FundingRateToIndex(
	proratedFundingRate *big.Rat,
	baseCurrencyAtomicResolution int32,
	priceValue uint64,
	priceExponent int32,
) (fundingIndex *big.Int)

FundingRateToIndex converts funding rate (in ppm) to FundingIndex given the oracle price.

To get funding index from funding rate, we know that:

  • `fundingPaymentQuoteQuantum = fundingRatePpm / 1_000_000 * time * quoteQuantums`
  • Divide both sides by `baseQuantums`:
  • Left side: `fundingPaymentQuoteQuantums / baseQuantums = fundingIndexDelta / 1_000_000`
  • right side: ``` fundingRate * time * quoteQuantums / baseQuantums = fundingRatePpm / 1_000_000 * priceValue * 10^(priceExponent + baseCurrencyAtomicResolution - quoteCurrencyAtomicResolution) [expression 3] ```

Hence, further multiplying both sides by 1_000_000, we have: 

fundingIndexDelta =
  (fundingRatePpm * time) * priceValue *
  10^(priceExponent + baseCurrencyAtomicResolution - quoteCurrencyAtomicResolution)

Arguments: 

proratedFundingRate: prorated funding rate adjusted by time delta, in parts-per-million
baseCurrencyAtomicResolution: atomic resolution of the base currency
priceValue: index price of the perpetual market according to the pricesKeeper
priceExponent: priceExponent of the market according to the pricesKeeper

func GetSortedKeys 

func GetSortedKeys[R interface {
	~[]K
	sort.Interface
}, K comparable, V any](m map[K]V) []K

GetSortedKeys returns the keys of the map in sorted order.

func Int64MulPpm 

func Int64MulPpm(x int64, ppm uint32) int64

Int64MulPpm multiplies an int64 by a scaling factor represented in parts per million. If the integer overflows, this method panics. This method rounds towards negative infinity.

func IntToString 

func IntToString[T int | int32 | int64](i T) string

IntToString converts any int type to a base-10 string.

func IsDeliverTxMode 

func IsDeliverTxMode(ctx sdk.Context) bool

func MapSlice 

func MapSlice[V any, E any](values []V, mapFunc func(V) E) []E

MapSlice takes a function and executes that function on each element of a slice, returning the result. Note the function must return one result for each element of the slice.

func Max 

func Max[T constraints.Ordered](x, y T) T

func MaybeGetJsonString 

func MaybeGetJsonString(i interface{}) string

MaybeGetStructJsonString returns the json representation of a struct, or a formatted string using %+v if the json conversion encounters an error.

func Median 

func Median[V uint64 | uint32 | int64 | int32](input []V) (V, error)

Median is a generic median calculator. If the input has an even number of elements, then the average of the two middle numbers is rounded away from zero.

func MergeAllMapsMustHaveDistinctKeys 

func MergeAllMapsMustHaveDistinctKeys[K comparable, V any](maps ...map[K]V) map[K]V

MergeAllMapsMustHaveDistinctKeys merges all the maps into a single map. Panics if there are duplicate keys.

func Min 

func Min[T constraints.Ordered](x, y T) T

func MustConvertBigIntToInt32 

func MustConvertBigIntToInt32(n *big.Int) int32

`MustConvertBigIntToInt32` converts a `big.Int` to an `int32` and panics if the input value overflows or underflows `int32`.

func MustConvertIntegerToUint32 

func MustConvertIntegerToUint32[T constraints.Integer](value T) uint32

func MustDivideUint32RoundUp 

func MustDivideUint32RoundUp(x, y uint32) uint32

MustDivideUint32RoundUp returns the result of x/y, rounded up. Note: this method will panic if y == 0.

func MustGetMedian 

func MustGetMedian[V uint64 | uint32 | int64 | int32](input []V) V

MustGetMedian is a wrapper around `Median` that panics if input length is zero.

func MustParseCoinsNormalized 

func MustParseCoinsNormalized(coinStr string) sdk.Coins

MustParseCoinsNormalized parses a string of coins and panics on error.

func QuoteToBaseQuantums 

func QuoteToBaseQuantums(
	bigQuoteQuantums *big.Int,
	baseCurrencyAtomicResolution int32,
	priceValue uint64,
	priceExponent int32,
) (bigNotional *big.Int)

QuoteToBaseQuantums converts an amount denoted in quote quantums, to an equivalent amount denoted in base quantums. To determine the equivalent amount, an oracle price is used.

  • `priceValue * 10^priceExponent` represents the conversion rate from one full coin of base currency to one full coin of quote currency.
  • `10^baseCurrencyAtomicResolution` represents the amount of one full coin that a base quantum is equal to.
  • `10^quoteCurrencyAtomicResolution` represents the amount of one full coin that a quote quantum is equal to.

To convert from quote to base quantums, we use the following equation: 

baseQuantums =
  quoteQuantums / priceValue /
  10^(priceExponent + baseCurrencyAtomicResolution - quoteCurrencyAtomicResolution)

The result is rounded down.

func RandomBytesBetween 

func RandomBytesBetween(start []byte, end []byte, rand *rand.Rand) []byte

RandomBytesBetween returns a random byte slice that is in the range [start, end] when compared lexicographically. The slice will have a length in the range [len(start), len(end)]. In the current implementation, all possible permutations are not equally likely. Nil slices for start and end will be treated as empty byte slices. Will panic if:

  • start compares lexicographically greater than end
  • nil rand is provided

func RatPow10 

func RatPow10(exponent int32) *big.Rat

RatPow10 returns the result of `10^exponent`. Re-uses the cached values by calling bigPow10Helper.

func TxMode 

func TxMode(ctx sdk.Context) string

TxMode returns a textual representation of the tx mode, one of `CheckTx`, `ReCheckTx`, or `DeliverTx`.

func Uint32ToKey 

func Uint32ToKey(i uint32) []byte

Uint32ToKey converts a uint32 to a 4-byte slice in big-endian format. The slices can be ordered lexicographically

func Uint64LinearInterpolate 

func Uint64LinearInterpolate(v0 uint64, v1 uint64, cPpm uint32) (uint64, error)

Uint64LinearInterpolate interpolates value v0 towards v1 by a small constant value c, typically expected to be between 0 and 1. Here, the input value of c is represented in ppm. In order to avoid overflows, if 0 <= cPpm <= 1_000_000 then an error is returned.

func Uint64MulPpm 

func Uint64MulPpm(x uint64, ppm uint32) uint64

Uint64MulPpm multiplies a uint64 value by a scaling factor represented in parts per million. If the integer overflows, this method panics.

func UintToString 

func UintToString[T uint | uint32 | uint64](i T) string

UintToString converts any uint type to a base-10 string.

func UniqueSliceToMap 

func UniqueSliceToMap[K comparable, V any](slice []V, keyFunc func(V) K) map[K]V

UniqueSliceToMap converts a slice to a map using the provided keyFunc to generate the key.

func UniqueSliceToSet 

func UniqueSliceToSet[K comparable](values []K) map[K]struct{}

UniqueSliceToSet converts a slice of unique values to a set. The function will panic if there are duplicate values.

Types

type MsgRouter 

type MsgRouter interface {
	Handler(msg sdk.Msg) baseapp.MsgServiceHandler
}

type Sortable 

type Sortable[K constraints.Ordered] []K

Sortable[K] attaches the methods of sort.Interface to []K, sorting in increasing order.

func (Sortable[K]) Len 

func (s Sortable[K]) Len() int

func (Sortable[K]) Less 

func (s Sortable[K]) Less(i, j int) bool

func (Sortable[K]) Swap 

func (s Sortable[K]) Swap(i, j int)

type TxHash 

type TxHash string

func GetTxHash 

func GetTxHash(tx []byte) TxHash

Source Files

View all Source files

Directories

Path Synopsis
nolint:lll
 nolint:lll

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