various: remove redundant parentheses (#15793)

12 files changed, 22 insertions, 22 deletions

diff --git a/accounts/abi/argument.go b/accounts/abi/argument.go
index 4540c342f..04ca6150a 100644
--- a/accounts/abi/argument.go
+++ b/accounts/abi/argument.go
@@ -202,7 +202,7 @@ func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) {
 	inputOffset := 0
 	for _, abiArg := range abiArgs {
 		if abiArg.Type.T == ArrayTy {
-			inputOffset += (32 * abiArg.Type.Size)
+			inputOffset += 32 * abiArg.Type.Size
 		} else {
 			inputOffset += 32
 		}
diff --git a/cmd/swarm/config.go b/cmd/swarm/config.go
index 33235ca06..29b5faefa 100644
--- a/cmd/swarm/config.go
+++ b/cmd/swarm/config.go
@@ -315,7 +315,7 @@ func checkDeprecated(ctx *cli.Context) {
 func printConfig(config *bzzapi.Config) string {
 	out, err := tomlSettings.Marshal(&config)
 	if err != nil {
-		return (fmt.Sprintf("Something is not right with the configuration: %v", err))
+		return fmt.Sprintf("Something is not right with the configuration: %v", err)
 	}
 	return string(out)
 }
diff --git a/common/bitutil/bitutil.go b/common/bitutil/bitutil.go
index 117616543..cd3e72169 100644
--- a/common/bitutil/bitutil.go
+++ b/common/bitutil/bitutil.go
@@ -40,7 +40,7 @@ func fastXORBytes(dst, a, b []byte) int {
 			dw[i] = aw[i] ^ bw[i]
 		}
 	}
-	for i := (n - n%wordSize); i < n; i++ {
+	for i := n - n%wordSize; i < n; i++ {
 		dst[i] = a[i] ^ b[i]
 	}
 	return n
@@ -84,7 +84,7 @@ func fastANDBytes(dst, a, b []byte) int {
 			dw[i] = aw[i] & bw[i]
 		}
 	}
-	for i := (n - n%wordSize); i < n; i++ {
+	for i := n - n%wordSize; i < n; i++ {
 		dst[i] = a[i] & b[i]
 	}
 	return n
@@ -128,7 +128,7 @@ func fastORBytes(dst, a, b []byte) int {
 			dw[i] = aw[i] | bw[i]
 		}
 	}
-	for i := (n - n%wordSize); i < n; i++ {
+	for i := n - n%wordSize; i < n; i++ {
 		dst[i] = a[i] | b[i]
 	}
 	return n
@@ -168,7 +168,7 @@ func fastTestBytes(p []byte) bool {
 			}
 		}
 	}
-	for i := (n - n%wordSize); i < n; i++ {
+	for i := n - n%wordSize; i < n; i++ {
 		if p[i] != 0 {
 			return true
 		}
diff --git a/crypto/ecies/ecies.go b/crypto/ecies/ecies.go
index 1d5f96ed2..2ed91c895 100644
--- a/crypto/ecies/ecies.go
+++ b/crypto/ecies/ecies.go
@@ -314,7 +314,7 @@ func (prv *PrivateKey) Decrypt(rand io.Reader, c, s1, s2 []byte) (m []byte, err
 
 	switch c[0] {
 	case 2, 3, 4:
-		rLen = ((prv.PublicKey.Curve.Params().BitSize + 7) / 4)
+		rLen = (prv.PublicKey.Curve.Params().BitSize + 7) / 4
 		if len(c) < (rLen + hLen + 1) {
 			err = ErrInvalidMessage
 			return
diff --git a/eth/handler.go b/eth/handler.go
index 31c311687..074cffd96 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -394,14 +394,14 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 			case query.Reverse:
 				// Number based traversal towards the genesis block
 				if query.Origin.Number >= query.Skip+1 {
-					query.Origin.Number -= (query.Skip + 1)
+					query.Origin.Number -= query.Skip + 1
 				} else {
 					unknown = true
 				}
 
 			case !query.Reverse:
 				// Number based traversal towards the leaf block
-				query.Origin.Number += (query.Skip + 1)
+				query.Origin.Number += query.Skip + 1
 			}
 		}
 		return p.SendBlockHeaders(headers)
diff --git a/les/handler.go b/les/handler.go
index f8cf63952..e310942ba 100644
--- a/les/handler.go
+++ b/les/handler.go
@@ -454,14 +454,14 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 			case query.Reverse:
 				// Number based traversal towards the genesis block
 				if query.Origin.Number >= query.Skip+1 {
-					query.Origin.Number -= (query.Skip + 1)
+					query.Origin.Number -= query.Skip + 1
 				} else {
 					unknown = true
 				}
 
 			case !query.Reverse:
 				// Number based traversal towards the leaf block
-				query.Origin.Number += (query.Skip + 1)
+				query.Origin.Number += query.Skip + 1
 			}
 		}
 
diff --git a/les/serverpool.go b/les/serverpool.go
index dc1ea6bf0..a84c29c3a 100644
--- a/les/serverpool.go
+++ b/les/serverpool.go
@@ -618,7 +618,7 @@ func (e *knownEntry) Weight() int64 {
 	if e.state != psNotConnected || !e.known || e.delayedRetry {
 		return 0
 	}
-	return int64(1000000000 * e.connectStats.recentAvg() * math.Exp(-float64(e.lastConnected.fails)*failDropLn-e.responseStats.recentAvg()/float64(responseScoreTC)-e.delayStats.recentAvg()/float64(delayScoreTC)) * math.Pow((1-e.timeoutStats.recentAvg()), timeoutPow))
+	return int64(1000000000 * e.connectStats.recentAvg() * math.Exp(-float64(e.lastConnected.fails)*failDropLn-e.responseStats.recentAvg()/float64(responseScoreTC)-e.delayStats.recentAvg()/float64(delayScoreTC)) * math.Pow(1-e.timeoutStats.recentAvg(), timeoutPow))
 }
 
 // poolEntryAddress is a separate object because currently it is necessary to remember
diff --git a/swarm/storage/chunker_test.go b/swarm/storage/chunker_test.go
index 6178a7bb1..6b828970b 100644
--- a/swarm/storage/chunker_test.go
+++ b/swarm/storage/chunker_test.go
@@ -60,7 +60,7 @@ func (self *chunkerTester) Split(chunker Splitter, data io.Reader, size int64, c
 			for {
 				select {
 				case <-timeout:
-					return errors.New(("Split timeout error"))
+					return errors.New("Split timeout error")
 				case <-quitC:
 					return nil
 				case chunk := <-chunkC:
@@ -97,7 +97,7 @@ func (self *chunkerTester) Append(chunker Splitter, rootKey Key, data io.Reader,
 			for {
 				select {
 				case <-timeout:
-					return errors.New(("Append timeout error"))
+					return errors.New("Append timeout error")
 				case <-quitC:
 					return nil
 				case chunk := <-chunkC:
@@ -146,7 +146,7 @@ func (self *chunkerTester) Join(chunker Chunker, key Key, c int, chunkC chan *Ch
 		for {
 			select {
 			case <-timeout:
-				return errors.New(("Join timeout error"))
+				return errors.New("Join timeout error")
 			case chunk, ok := <-chunkC:
 				if !ok {
 					close(quitC)
@@ -155,7 +155,7 @@ func (self *chunkerTester) Join(chunker Chunker, key Key, c int, chunkC chan *Ch
 				// this just mocks the behaviour of a chunk store retrieval
 				stored, success := self.chunks[chunk.Key.String()]
 				if !success {
-					return errors.New(("Not found"))
+					return errors.New("Not found")
 				}
 				chunk.SData = stored.SData
 				chunk.Size = int64(binary.LittleEndian.Uint64(chunk.SData[0:8]))
diff --git a/swarm/storage/pyramid.go b/swarm/storage/pyramid.go
index f2e85cb5b..19d493405 100644
--- a/swarm/storage/pyramid.go
+++ b/swarm/storage/pyramid.go
@@ -338,7 +338,7 @@ func (self *PyramidChunker) loadTree(chunkLevel [][]*TreeEntry, key Key, chunkC
 	chunkLevel[depth-1] = append(chunkLevel[depth-1], newEntry)
 
 	// Add the rest of the tree
-	for lvl := (depth - 1); lvl >= 1; lvl-- {
+	for lvl := depth - 1; lvl >= 1; lvl-- {
 
 		//TODO(jmozah): instead of loading finished branches and then trim in the end,
 		//avoid loading them in the first place
diff --git a/trie/trie.go b/trie/trie.go
index c211e7554..7c1b5e1b6 100644
--- a/trie/trie.go
+++ b/trie/trie.go
@@ -489,7 +489,7 @@ func (t *Trie) Commit() (root common.Hash, err error) {
 func (t *Trie) CommitTo(db DatabaseWriter) (root common.Hash, err error) {
 	hash, cached, err := t.hashRoot(db)
 	if err != nil {
-		return (common.Hash{}), err
+		return common.Hash{}, err
 	}
 	t.root = cached
 	t.cachegen++
diff --git a/whisper/whisperv5/filter_test.go b/whisper/whisperv5/filter_test.go
index bd35e7f20..72568b94e 100644
--- a/whisper/whisperv5/filter_test.go
+++ b/whisper/whisperv5/filter_test.go
@@ -88,7 +88,7 @@ func generateTestCases(t *testing.T, SizeTestFilters int) []FilterTestCase {
 	for i := 0; i < SizeTestFilters; i++ {
 		f, _ := generateFilter(t, true)
 		cases[i].f = f
-		cases[i].alive = (mrand.Int()&int(1) == 0)
+		cases[i].alive = mrand.Int()&int(1) == 0
 	}
 	return cases
 }
@@ -122,7 +122,7 @@ func TestInstallFilters(t *testing.T) {
 
 	for i, testCase := range tst {
 		fil := filters.Get(testCase.id)
-		exist := (fil != nil)
+		exist := fil != nil
 		if exist != testCase.alive {
 			t.Fatalf("seed %d: failed alive: %d, %v, %v", seed, i, exist, testCase.alive)
 		}
diff --git a/whisper/whisperv6/filter_test.go b/whisper/whisperv6/filter_test.go
index dd0de0f6e..e2877b233 100644
--- a/whisper/whisperv6/filter_test.go
+++ b/whisper/whisperv6/filter_test.go
@@ -88,7 +88,7 @@ func generateTestCases(t *testing.T, SizeTestFilters int) []FilterTestCase {
 	for i := 0; i < SizeTestFilters; i++ {
 		f, _ := generateFilter(t, true)
 		cases[i].f = f
-		cases[i].alive = (mrand.Int()&int(1) == 0)
+		cases[i].alive = mrand.Int()&int(1) == 0
 	}
 	return cases
 }
@@ -122,7 +122,7 @@ func TestInstallFilters(t *testing.T) {
 
 	for i, testCase := range tst {
 		fil := filters.Get(testCase.id)
-		exist := (fil != nil)
+		exist := fil != nil
 		if exist != testCase.alive {
 			t.Fatalf("seed %d: failed alive: %d, %v, %v", seed, i, exist, testCase.alive)
 		}