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core: moved guards

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This commit is contained in:
obscuren 2015-05-28 18:18:23 +02:00
parent 2587b0ea62
commit 12b90600eb
1 changed files with 8 additions and 9 deletions
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17
core/chain_manager.go
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@ -680,21 +680,20 @@ func (self *ChainManager) diff(oldBlock, newBlock *types.Block) (types.Blocks, e
// first reduce whoever is higher bound
if oldBlock.NumberU64() > newBlock.NumberU64() {
// reduce old chain
for oldBlock = oldBlock; oldBlock.NumberU64() != newBlock.NumberU64(); oldBlock = self.GetBlock(oldBlock.ParentHash()) {
if oldBlock == nil {
return nil, fmt.Errorf("Invalid old chain")
}
for oldBlock = oldBlock; oldBlock != nil && oldBlock.NumberU64() != newBlock.NumberU64(); oldBlock = self.GetBlock(oldBlock.ParentHash()) {
}
} else {
// reduce new chain and append new chain blocks for inserting later on
for newBlock = newBlock; newBlock.NumberU64() != oldBlock.NumberU64(); newBlock = self.GetBlock(newBlock.ParentHash()) {
if newBlock == nil {
return nil, fmt.Errorf("Invalid new chain")
}
for newBlock = newBlock; newBlock != nil && newBlock.NumberU64() != oldBlock.NumberU64(); newBlock = self.GetBlock(newBlock.ParentHash()) {
newChain = append(newChain, newBlock)
}
}
if oldBlock == nil {
return nil, fmt.Errorf("Invalid old chain")
}
if newBlock == nil {
return nil, fmt.Errorf("Invalid new chain")
}
numSplit := newBlock.Number()
for {