[golint] fix lint errors

Signed-off-by: Leo Chen <leo@harmony.one>

accounts/abi/argument.go

@@ -31,8 +31,10 @@ type Argument struct {
 	Indexed bool // indexed is only used by events
 }
 
+// Arguments is a list of Argument
 type Arguments []Argument
 
+// ArgumentMarshaling is a struct for argument
 type ArgumentMarshaling struct {
 	Name         string
 	Type         string

accounts/abi/bind/backend.go

@@ -32,11 +32,11 @@ var (
 	// have any code associated with it (i.e. suicided).
 	ErrNoCode = errors.New("no contract code at given address")
 
-	// This error is raised when attempting to perform a pending state action
+	// ErrNoPendingState is raised when attempting to perform a pending state action
 	// on a backend that doesn't implement PendingContractCaller.
 	ErrNoPendingState = errors.New("backend does not support pending state")
 
-	// This error is returned by WaitDeployed if contract creation leaves an
+	// ErrNoCodeAfterDeploy is returned by WaitDeployed if contract creation leaves an
 	// empty contract behind.
 	ErrNoCodeAfterDeploy = errors.New("no contract code after deployment")
 )

accounts/abi/bind/bind.go

@@ -37,6 +37,7 @@ import (
 // Lang is a target programming language selector to generate bindings for.
 type Lang int
 
+// Constants
 const (
 	LangGo Lang = iota
 	LangJava

accounts/abi/bind/bind_test.go

@@ -2186,7 +2186,7 @@ public class Test {
 			for _, line := range lines {
 				if strings.TrimSpace(line) != "" {
 					lines[index] = line
-					index += 1
+					index++
 				}
 			}
 			lines = lines[:index]

accounts/external/backend.go

@@ -32,14 +32,17 @@ import (
 	"github.com/harmony-one/harmony/core/types"
 )
 
+// ExternalBackend is a struct for external backend
 type ExternalBackend struct {
 	signers []accounts.Wallet
 }
 
+// Wallets returns the list of wallets
 func (eb *ExternalBackend) Wallets() []accounts.Wallet {
 	return eb.signers
 }
 
+// NewExternalBackend ...
 func NewExternalBackend(endpoint string) (*ExternalBackend, error) {
 	signer, err := NewExternalSigner(endpoint)
 	if err != nil {
@@ -50,6 +53,7 @@ func NewExternalBackend(endpoint string) (*ExternalBackend, error) {
 	}, nil
 }
 
+// Subscribe ...
 func (eb *ExternalBackend) Subscribe(sink chan<- accounts.WalletEvent) event.Subscription {
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		<-quit
@@ -68,6 +72,7 @@ type ExternalSigner struct {
 	cache    []accounts.Account
 }
 
+// NewExternalSigner ...
 func NewExternalSigner(endpoint string) (*ExternalSigner, error) {
 	client, err := rpc.Dial(endpoint)
 	if err != nil {
@@ -86,6 +91,7 @@ func NewExternalSigner(endpoint string) (*ExternalSigner, error) {
 	return extsigner, nil
 }
 
+// URL ...
 func (api *ExternalSigner) URL() accounts.URL {
 	return accounts.URL{
 		Scheme: "extapi",
@@ -93,18 +99,22 @@ func (api *ExternalSigner) URL() accounts.URL {
 	}
 }
 
+// Status ...
 func (api *ExternalSigner) Status() (string, error) {
 	return api.status, nil
 }
 
+// Open ...
 func (api *ExternalSigner) Open(passphrase string) error {
 	return fmt.Errorf("operation not supported on external signers")
 }
 
+// Close ...
 func (api *ExternalSigner) Close() error {
 	return fmt.Errorf("operation not supported on external signers")
 }
 
+// Accounts ...
 func (api *ExternalSigner) Accounts() []accounts.Account {
 	var accnts []accounts.Account
 	res, err := api.listAccounts()
@@ -127,6 +137,7 @@ func (api *ExternalSigner) Accounts() []accounts.Account {
 	return accnts
 }
 
+// Contains ...
 func (api *ExternalSigner) Contains(account accounts.Account) bool {
 	api.cacheMu.RLock()
 	defer api.cacheMu.RUnlock()
@@ -144,10 +155,12 @@ func (api *ExternalSigner) Contains(account accounts.Account) bool {
 	return false
 }
 
+// Derive ...
 func (api *ExternalSigner) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) {
 	return accounts.Account{}, fmt.Errorf("operation not supported on external signers")
 }
 
+// SelfDerive ...
 func (api *ExternalSigner) SelfDerive(bases []accounts.DerivationPath, chain ethereum.ChainStateReader) {
 	log.Error("operation SelfDerive not supported on external signers")
 }
@@ -173,6 +186,7 @@ func (api *ExternalSigner) SignData(account accounts.Account, mimeType string, d
 	return res, nil
 }
 
+// SignText ...
 func (api *ExternalSigner) SignText(account accounts.Account, text []byte) ([]byte, error) {
 	var signature hexutil.Bytes
 	var signAddress = common.NewMixedcaseAddress(account.Address)
@@ -196,6 +210,7 @@ type signTransactionResult struct {
 	Tx  *types.Transaction `json:"tx"`
 }
 
+// SignTx ...
 func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) {
 	data := hexutil.Bytes(tx.Data())
 	var to *common.MixedcaseAddress
@@ -219,13 +234,17 @@ func (api *ExternalSigner) SignTx(account accounts.Account, tx *types.Transactio
 	return res.Tx, nil
 }
 
+// SignTextWithPassphrase ...
 func (api *ExternalSigner) SignTextWithPassphrase(account accounts.Account, passphrase string, text []byte) ([]byte, error) {
 	return []byte{}, fmt.Errorf("password-operations not supported on external signers")
 }
 
+// SignTxWithPassphrase ...
 func (api *ExternalSigner) SignTxWithPassphrase(account accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) {
 	return nil, fmt.Errorf("password-operations not supported on external signers")
 }
+
+// SignDataWithPassphrase ...
 func (api *ExternalSigner) SignDataWithPassphrase(account accounts.Account, passphrase, mimeType string, data []byte) ([]byte, error) {
 	return nil, fmt.Errorf("password-operations not supported on external signers")
 }