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Replaced to return the td and throw a specific error on TD

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This commit is contained in:
obscuren 2014-11-04 13:00:47 +01:00
parent 699dcaf65c
commit a9db1ee8d4
2 changed files with 15 additions and 6 deletions
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9
chain/chain_manager.go
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@ -319,10 +319,7 @@ func (self *ChainManager) InsertChain(chain *BlockChain) {
} }
} }
func (self *ChainManager) TestChain(chain *BlockChain) (i int, err error) { func (self *ChainManager) TestChain(chain *BlockChain) (td *big.Int, err error) {
var (
td *big.Int
)
for e := chain.Front(); e != nil; e = e.Next() { for e := chain.Front(); e != nil; e = e.Next() {
var ( var (
l = e.Value.(*link) l = e.Value.(*link)
@ -355,9 +352,9 @@ func (self *ChainManager) TestChain(chain *BlockChain) (i int, err error) {
} }
if td.Cmp(self.TD) <= 0 { if td.Cmp(self.TD) <= 0 {
err = fmt.Errorf("incoming chain has a lower or equal TD (%v <= %v)", td, self.TD) err = &TDError{td, self.TD}
return return
} }
return i, nil return
} }

12
chain/error.go
View File

@ -114,3 +114,15 @@ func IsOutOfGasErr(err error) bool {
return ok 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 := err.(*TDError)
return ok
}