Changed how logs are being recorded

Logs are now recorded per transactions instead of tossing them out after
each transaction. This should also fix an issue with
`eth_getFilterLogs` (#629) Also now implemented are the `transactionHash,
blockHash, transactionIndex, logIndex` on logs. Closes #654.

core/state/log.go

@@ -8,87 +8,31 @@ import (
 	"github.com/ethereum/go-ethereum/rlp"
 )
 
-type Log interface {
-	Address() common.Address
-	Topics() []common.Hash
-	Data() []byte
+type Log struct {
+	Address common.Address
+	Topics  []common.Hash
+	Data    []byte
+	Number  uint64
 
-	Number() uint64
+	TxHash    common.Hash
+	TxIndex   uint
+	BlockHash common.Hash
+	Index     uint
 }
 
-type StateLog struct {
-	address common.Address
-	topics  []common.Hash
-	data    []byte
-	number  uint64
+func NewLog(address common.Address, topics []common.Hash, data []byte, number uint64) *Log {
+	return &Log{Address: address, Topics: topics, Data: data, Number: number}
 }
 
-func NewLog(address common.Address, topics []common.Hash, data []byte, number uint64) *StateLog {
-	return &StateLog{address, topics, data, number}
+func (self *Log) EncodeRLP(w io.Writer) error {
+	return rlp.Encode(w, []interface{}{self.Address, self.Topics, self.Data})
 }
 
-func (self *StateLog) Address() common.Address {
-	return self.address
+func (self *Log) String() string {
+	return fmt.Sprintf(`log: %x %x %x`, self.Address, self.Topics, self.Data)
 }
 
-func (self *StateLog) Topics() []common.Hash {
-	return self.topics
-}
-
-func (self *StateLog) Data() []byte {
-	return self.data
-}
-
-func (self *StateLog) Number() uint64 {
-	return self.number
-}
-
-/*
-func NewLogFromValue(decoder *common.Value) *StateLog {
-	var extlog struct {
-
-	}
-
-	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) EncodeRLP(w io.Writer) error {
-	return rlp.Encode(w, []interface{}{self.address, self.topics, self.data})
-}
-
-/*
-func (self *StateLog) RlpData() interface{} {
-	return []interface{}{self.address, common.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
-}
-*/
+type Logs []*Log
 
 func (self Logs) String() (ret string) {
 	for _, log := range self {