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// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package trie
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)
}
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