erigon-pulse/ethtrie/slice.go

54 lines
761 B
Go

package ethtrie
import (
"bytes"
"math"
)
// Helper function for comparing slices
func CompareIntSlice(a, b []int) bool {
if len(a) != len(b) {
return false
}
for i, v := range a {
if v != b[i] {
return false
}
}
return true
}
// Returns the amount of nibbles that match each other from 0 ...
func MatchingNibbleLength(a, b []byte) int {
var i, length = 0, int(math.Min(float64(len(a)), float64(len(b))))
for i < length {
if a[i] != b[i] {
break
}
i++
}
return i
}
func HasTerm(s []byte) bool {
return s[len(s)-1] == 16
}
func RemTerm(s []byte) []byte {
if HasTerm(s) {
return s[:len(s)-1]
}
return s
}
func BeginsWith(a, b []byte) bool {
if len(b) > len(a) {
return false
}
return bytes.Equal(a[:len(b)], b)
}