Implemented new bloom filter. Closes #156

pull/167/head
obscuren 10 years ago
parent 08c26ab8b0
commit 6623500c6b
  1. 38
      ethchain/bloom9.go

@ -0,0 +1,38 @@
package ethchain
import "github.com/ethereum/go-ethereum/vm"
func CreateBloom(txs Transactions) uint64 {
var bin uint64
for _, tx := range txs {
bin |= logsBloom(tx.logs)
}
return bin
}
func logsBloom(logs []vm.Log) uint64 {
var bin uint64
for _, log := range logs {
data := []byte{log.Address}
for _, topic := range log.Topics {
data = append(data, topic.Bytes())
}
data = append(data, log.Data)
for _, b := range data {
bin |= bloom9(b)
}
}
return bin
}
func bloom9(b []byte) uint64 {
var r uint64
for _, i := range []int{0, 2, 4} {
r |= 1 << (b[i+1] + 256*(b[i]&1))
}
return r
}
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