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