path: root/state/log.go

package state

import (
    "fmt"

    "github.com/ethereum/go-ethereum/ethutil"
)

type Log interface {
    ethutil.RlpEncodable

    Address() []byte
    Topics() [][]byte
    Data() []byte

    Number() uint64
}

type StateLog struct {
    address []byte
    topics  [][]byte
    data    []byte
    number  uint64
}

func NewLog(address []byte, topics [][]byte, data []byte, number uint64) *StateLog {
    return &StateLog{address, topics, data, number}
}

func (self *StateLog) Address() []byte {
    return self.address
}

func (self *StateLog) Topics() [][]byte {
    return self.topics
}

func (self *StateLog) Data() []byte {
    return self.data
}

func (self *StateLog) Number() uint64 {
    return self.number
}

func NewLogFromValue(decoder *ethutil.Value) *StateLog {
    log := &StateLog{
        address: decoder.Get(0).Bytes(),
        data:    decoder.Get(2).Bytes(),
    }

    it := decoder.Get(1).NewIterator()
    for it.Next() {
        log.topics = append(log.topics, it.Value().Bytes())
    }

    return log
}

func (self *StateLog) RlpData() interface{} {
    return []interface{}{self.address, ethutil.ByteSliceToInterface(self.topics), self.data}
}

func (self *StateLog) String() string {
    return fmt.Sprintf(`log: %x %x %x`, self.address, self.topics, self.data)
}

type Logs []Log

func (self Logs) RlpData() interface{} {
    data := make([]interface{}, len(self))
    for i, log := range self {
        data[i] = log.RlpData()
    }

    return data
}

func (self Logs) String() (ret string) {
    for _, log := range self {
        ret += fmt.Sprintf("%v", log)
    }

    return "[" + ret + "]"
}