/
params.go
43 lines (36 loc) · 1.08 KB
/
params.go
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package types
import "math"
func (m *PerpetualFeeParams) Validate() error {
if len(m.Tiers) == 0 {
return ErrNoTiersExist
}
if m.Tiers[0].AbsoluteVolumeRequirement != 0 ||
m.Tiers[0].TotalVolumeShareRequirementPpm != 0 ||
m.Tiers[0].MakerVolumeShareRequirementPpm != 0 {
return ErrInvalidFirstTierRequirements
}
for i := 1; i < len(m.Tiers); i++ {
prevTier := m.Tiers[i-1]
currTier := m.Tiers[i]
if prevTier.AbsoluteVolumeRequirement > currTier.AbsoluteVolumeRequirement ||
prevTier.TotalVolumeShareRequirementPpm > currTier.TotalVolumeShareRequirementPpm ||
prevTier.MakerVolumeShareRequirementPpm > currTier.MakerVolumeShareRequirementPpm {
return ErrTiersOutOfOrder
}
}
lowestMakerFee := int32(math.MaxInt32)
lowestTakerFee := int32(math.MaxInt32)
for _, tier := range m.Tiers {
if tier.MakerFeePpm < lowestMakerFee {
lowestMakerFee = tier.MakerFeePpm
}
if tier.TakerFeePpm < lowestTakerFee {
lowestTakerFee = tier.TakerFeePpm
}
}
// Prevent overflow
if int64(lowestMakerFee)+int64(lowestTakerFee) < 0 {
return ErrInvalidFee
}
return nil
}