blob: de3f7acf876cf16bc6a5ede8f30070b5316db081 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright 2014 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum 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.
//
// go-ethereum 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 go-ethereum. 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)
}
|
