mirror of https://github.com/poanetwork/quorum.git
60 lines
1.0 KiB
Go
60 lines
1.0 KiB
Go
package types
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/core/state"
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)
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func CreateBloom(receipts Receipts) Bloom {
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bin := new(big.Int)
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for _, receipt := range receipts {
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bin.Or(bin, LogsBloom(receipt.logs))
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}
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return BytesToBloom(bin.Bytes())
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}
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func LogsBloom(logs state.Logs) *big.Int {
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bin := new(big.Int)
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for _, log := range logs {
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data := make([]common.Hash, len(log.Topics()))
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bin.Or(bin, bloom9(log.Address().Bytes()))
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for i, topic := range log.Topics() {
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data[i] = topic
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}
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for _, b := range data {
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bin.Or(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) *big.Int {
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b = crypto.Sha3(b[:])
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r := new(big.Int)
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for i := 0; i < 6; i += 2 {
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t := big.NewInt(1)
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b := (uint(b[i+1]) + (uint(b[i]) << 8)) & 2047
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r.Or(r, t.Lsh(t, b))
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}
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return r
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}
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var Bloom9 = bloom9
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func BloomLookup(bin Bloom, topic common.Hash) bool {
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bloom := bin.Big()
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cmp := bloom9(topic[:])
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return bloom.And(bloom, cmp).Cmp(cmp) == 0
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}
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