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core: improve readability of the fork choice logic (#2658)

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buddho 2024-08-20 23:06:49 +08:00 committed by GitHub
parent 5d19f2182b
commit 3bd9a2395c
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1 changed files with 13 additions and 6 deletions
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17
core/forkchoice.go
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@ -121,12 +121,19 @@ func (f *ForkChoice) ReorgNeeded(current *types.Header, extern *types.Header) (b
if f.preserve != nil { if f.preserve != nil {
currentPreserve, externPreserve = f.preserve(current), f.preserve(extern) currentPreserve, externPreserve = f.preserve(current), f.preserve(extern)
} }
choiceRules := func() bool {
if extern.Time == current.Time {
doubleSign := (extern.Coinbase == current.Coinbase) doubleSign := (extern.Coinbase == current.Coinbase)
reorg = !currentPreserve && (externPreserve || if doubleSign {
extern.Time < current.Time || return extern.Hash().Cmp(current.Hash()) < 0
extern.Time == current.Time && } else {
((doubleSign && extern.Hash().Cmp(current.Hash()) < 0) || return f.rand.Float64() < 0.5
(!doubleSign && f.rand.Float64() < 0.5))) }
} else {
return extern.Time < current.Time
}
}
reorg = !currentPreserve && (externPreserve || choiceRules())
} }
return reorg, nil return reorg, nil
} }