consensus, core: drop all the legacy custom core error types

core/error.go

@@ -16,188 +16,16 @@
 
 package core
 
-import (
-	"errors"
-	"fmt"
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-)
+import "errors"
 
 var (
-	BlockNumberErr   = errors.New("block number invalid")
-	BlockFutureErr   = errors.New("block time is in the future")
-	BlockTSTooBigErr = errors.New("block time too big")
-	BlockEqualTSErr  = errors.New("block time stamp equal to previous")
+	// ErrKnownBlock is returned when a block to import is already known locally.
+	ErrKnownBlock = errors.New("block already known")
+
+	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
+	// by a transaction is higher than what's left in the block.
+	ErrGasLimitReached = errors.New("gas limit reached")
+
+	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
+	ErrBlacklistedHash = errors.New("blacklisted hash")
 )
-
-// Parent error. In case a parent is unknown this error will be thrown
-// by the block manager
-type ParentErr struct {
-	Message string
-}
-
-func (err *ParentErr) Error() string {
-	return err.Message
-}
-
-func ParentError(hash common.Hash) error {
-	return &ParentErr{Message: fmt.Sprintf("Block's parent unknown %x", hash)}
-}
-
-func IsParentErr(err error) bool {
-	_, ok := err.(*ParentErr)
-	return ok
-}
-
-type UncleErr struct {
-	Message string
-}
-
-func (err *UncleErr) Error() string {
-	return err.Message
-}
-
-func UncleError(format string, v ...interface{}) error {
-	return &UncleErr{Message: fmt.Sprintf(format, v...)}
-}
-
-func IsUncleErr(err error) bool {
-	_, ok := err.(*UncleErr)
-	return ok
-}
-
-// Block validation error. If any validation fails, this error will be thrown
-type ValidationErr struct {
-	Message string
-}
-
-func (err *ValidationErr) Error() string {
-	return err.Message
-}
-
-func ValidationError(format string, v ...interface{}) *ValidationErr {
-	return &ValidationErr{Message: fmt.Sprintf(format, v...)}
-}
-
-func IsValidationErr(err error) bool {
-	_, ok := err.(*ValidationErr)
-	return ok
-}
-
-type NonceErr struct {
-	Message string
-	Is, Exp uint64
-}
-
-func (err *NonceErr) Error() string {
-	return err.Message
-}
-
-func NonceError(is, exp uint64) *NonceErr {
-	return &NonceErr{Message: fmt.Sprintf("Transaction w/ invalid nonce. tx=%d  state=%d)", is, exp), Is: is, Exp: exp}
-}
-
-func IsNonceErr(err error) bool {
-	_, ok := err.(*NonceErr)
-	return ok
-}
-
-// BlockNonceErr indicates that a block's nonce is invalid.
-type BlockNonceErr struct {
-	Number *big.Int
-	Hash   common.Hash
-	Nonce  uint64
-}
-
-func (err *BlockNonceErr) Error() string {
-	return fmt.Sprintf("nonce for #%d [%x…] is invalid (got %d)", err.Number, err.Hash, err.Nonce)
-}
-
-// IsBlockNonceErr returns true for invalid block nonce errors.
-func IsBlockNonceErr(err error) bool {
-	_, ok := err.(*BlockNonceErr)
-	return ok
-}
-
-type InvalidTxErr struct {
-	Message string
-}
-
-func (err *InvalidTxErr) Error() string {
-	return err.Message
-}
-
-func InvalidTxError(err error) *InvalidTxErr {
-	return &InvalidTxErr{fmt.Sprintf("%v", err)}
-}
-
-func IsInvalidTxErr(err error) bool {
-	_, ok := err.(*InvalidTxErr)
-	return ok
-}
-
-type TDError struct {
-	a, b *big.Int
-}
-
-func (self *TDError) Error() string {
-	return fmt.Sprintf("incoming chain has a lower or equal TD (%v <= %v)", self.a, self.b)
-}
-func IsTDError(e error) bool {
-	_, ok := e.(*TDError)
-	return ok
-}
-
-type KnownBlockError struct {
-	number *big.Int
-	hash   common.Hash
-}
-
-func (self *KnownBlockError) Error() string {
-	return fmt.Sprintf("block %v already known (%x)", self.number, self.hash[0:4])
-}
-func IsKnownBlockErr(e error) bool {
-	_, ok := e.(*KnownBlockError)
-	return ok
-}
-
-type ValueTransferError struct {
-	message string
-}
-
-func ValueTransferErr(str string, v ...interface{}) *ValueTransferError {
-	return &ValueTransferError{fmt.Sprintf(str, v...)}
-}
-
-func (self *ValueTransferError) Error() string {
-	return self.message
-}
-func IsValueTransferErr(e error) bool {
-	_, ok := e.(*ValueTransferError)
-	return ok
-}
-
-type BadHashError common.Hash
-
-func (h BadHashError) Error() string {
-	return fmt.Sprintf("Found known bad hash in chain %x", h[:])
-}
-
-func IsBadHashError(err error) bool {
-	_, ok := err.(BadHashError)
-	return ok
-}
-
-type GasLimitErr struct {
-	Have, Want *big.Int
-}
-
-func IsGasLimitErr(err error) bool {
-	_, ok := err.(*GasLimitErr)
-	return ok
-}
-
-func (err *GasLimitErr) Error() string {
-	return fmt.Sprintf("GasLimit reached. Have %d gas, transaction requires %d", err.Have, err.Want)
-}