1 files changed, 0 insertions, 161 deletions
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go
deleted file mode 100644
index 6b9ce634f..000000000
--- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go
+++ /dev/null
@@ -1,161 +0,0 @@
-// Copyright 2018 The dexon-consensus Authors
-// This file is part of the dexon-consensus library.
-//
-// The dexon-consensus 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 dexon-consensus 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 dexon-consensus library. If not, see
-// <http://www.gnu.org/licenses/>.
-
-package core
-
-import (
-	"errors"
-	"fmt"
-	"os"
-	"sort"
-	"time"
-
-	"github.com/dexon-foundation/dexon-consensus/common"
-	"github.com/dexon-foundation/dexon-consensus/core/crypto"
-	"github.com/dexon-foundation/dexon-consensus/core/types"
-)
-
-var (
-	debug = false
-	// ErrEmptyTimestamps would be reported if Block.timestamps is empty.
-	ErrEmptyTimestamps = errors.New("timestamp vector should not be empty")
-)
-
-func init() {
-	if os.Getenv("DEBUG") != "" {
-		debug = true
-	}
-}
-
-// Debugf is like fmt.Printf, but only output when we are in debug mode.
-func Debugf(format string, args ...interface{}) {
-	if debug {
-		fmt.Printf(format, args...)
-	}
-}
-
-// Debugln is like fmt.Println, but only output when we are in debug mode.
-func Debugln(args ...interface{}) {
-	if debug {
-		fmt.Println(args)
-	}
-}
-
-func interpoTime(t1 time.Time, t2 time.Time, sep int) []time.Time {
-	if sep == 0 {
-		return []time.Time{}
-	}
-	if t1.After(t2) {
-		return interpoTime(t2, t1, sep)
-	}
-	timestamps := make([]time.Time, sep)
-	duration := t2.Sub(t1)
-	period := time.Duration(
-		(duration.Nanoseconds() / int64(sep+1))) * time.Nanosecond
-	prevTime := t1
-	for idx := range timestamps {
-		prevTime = prevTime.Add(period)
-		timestamps[idx] = prevTime
-	}
-	return timestamps
-}
-
-func getMedianTime(timestamps []time.Time) (t time.Time, err error) {
-	if len(timestamps) == 0 {
-		err = ErrEmptyTimestamps
-		return
-	}
-	tscopy := make([]time.Time, 0, len(timestamps))
-	for _, ts := range timestamps {
-		tscopy = append(tscopy, ts)
-	}
-	sort.Sort(common.ByTime(tscopy))
-	if len(tscopy)%2 == 0 {
-		t1 := tscopy[len(tscopy)/2-1]
-		t2 := tscopy[len(tscopy)/2]
-		t = interpoTime(t1, t2, 1)[0]
-	} else {
-		t = tscopy[len(tscopy)/2]
-	}
-	return
-}
-
-func removeFromSortedUint32Slice(xs []uint32, x uint32) []uint32 {
-	indexToRemove := sort.Search(len(xs), func(idx int) bool {
-		return xs[idx] >= x
-	})
-	if indexToRemove == len(xs) || xs[indexToRemove] != x {
-		// This value is not found.
-		return xs
-	}
-	return append(xs[:indexToRemove], xs[indexToRemove+1:]...)
-}
-
-// HashConfigurationBlock returns the hash value of configuration block.
-func HashConfigurationBlock(
-	notarySet map[types.NodeID]struct{},
-	config *types.Config,
-	snapshotHash common.Hash,
-	prevHash common.Hash,
-) common.Hash {
-	notaryIDs := make(types.NodeIDs, 0, len(notarySet))
-	for nID := range notarySet {
-		notaryIDs = append(notaryIDs, nID)
-	}
-	sort.Sort(notaryIDs)
-	notarySetBytes := make([]byte, 0, len(notarySet)*len(common.Hash{}))
-	for _, nID := range notaryIDs {
-		notarySetBytes = append(notarySetBytes, nID.Hash[:]...)
-	}
-	configBytes := config.Bytes()
-
-	return crypto.Keccak256Hash(
-		notarySetBytes[:],
-		configBytes[:],
-		snapshotHash[:],
-		prevHash[:],
-	)
-}
-
-// VerifyBlock verifies the signature of types.Block.
-func VerifyBlock(b *types.Block) (err error) {
-	hash, err := hashBlock(b)
-	if err != nil {
-		return
-	}
-	if hash != b.Hash {
-		err = ErrIncorrectHash
-		return
-	}
-	pubKey, err := crypto.SigToPub(b.Hash, b.Signature)
-	if err != nil {
-		return
-	}
-	if !b.ProposerID.Equal(types.NewNodeID(pubKey)) {
-		err = ErrIncorrectSignature
-		return
-	}
-	return
-}
-
-// DiffUint64 calculates difference between two uint64.
-func DiffUint64(a, b uint64) uint64 {
-	if a > b {
-		return a - b
-	}
-	return b - a
-}