Golang Value.Get方法代码示例

func unpackAddr(value *ethutil.Value, p uint64) string {
	a := strconv.Itoa(int(value.Get(0).Uint()))
	b := strconv.Itoa(int(value.Get(1).Uint()))
	c := strconv.Itoa(int(value.Get(2).Uint()))
	d := strconv.Itoa(int(value.Get(3).Uint()))
	host := strings.Join([]string{a, b, c, d}, ".")
	port := strconv.Itoa(int(p))

	return net.JoinHostPort(host, port)
}

func (block *Block) RlpValueDecode(decoder *ethutil.Value) {
	header := decoder.Get(0)

	block.PrevHash = header.Get(0).Bytes()
	block.UncleSha = header.Get(1).Bytes()
	block.Coinbase = header.Get(2).Bytes()
	block.state = ethstate.New(ethtrie.New(ethutil.Config.Db, header.Get(3).Val))
	block.TxSha = header.Get(4).Bytes()
	block.Difficulty = header.Get(5).BigInt()
	block.Number = header.Get(6).BigInt()
	//fmt.Printf("#%v : %x\n", block.Number, block.Coinbase)
	block.MinGasPrice = header.Get(7).BigInt()
	block.GasLimit = header.Get(8).BigInt()
	block.GasUsed = header.Get(9).BigInt()
	block.Time = int64(header.Get(10).BigInt().Uint64())
	block.Extra = header.Get(11).Str()
	block.Nonce = header.Get(12).Bytes()

	// Tx list might be empty if this is an uncle. Uncles only have their
	// header set.
	if decoder.Get(1).IsNil() == false { // Yes explicitness
		receipts := decoder.Get(1)
		block.transactions = make([]*Transaction, receipts.Len())
		block.receipts = make([]*Receipt, receipts.Len())
		for i := 0; i < receipts.Len(); i++ {
			receipt := NewRecieptFromValue(receipts.Get(i))
			block.transactions[i] = receipt.Tx
			block.receipts[i] = receipt
		}

	}

	if decoder.Get(2).IsNil() == false { // Yes explicitness
		uncles := decoder.Get(2)
		block.Uncles = make([]*Block, uncles.Len())
		for i := 0; i < uncles.Len(); i++ {
			block.Uncles[i] = NewUncleBlockFromValue(uncles.Get(i))
		}
	}

}

func (block *Block) RlpValueDecode(decoder *ethutil.Value) {
	header := decoder.Get(0)

	block.PrevHash = header.Get(0).Bytes()
	block.UncleSha = header.Get(1).Bytes()
	block.Coinbase = header.Get(2).Bytes()
	block.state = NewState(ethutil.NewTrie(ethutil.Config.Db, header.Get(3).Val))
	block.TxSha = header.Get(4).Bytes()
	block.Difficulty = header.Get(5).BigInt()
	block.Time = int64(header.Get(6).BigInt().Uint64())
	block.Extra = header.Get(7).Str()
	block.Nonce = header.Get(8).Bytes()
	block.contractStates = make(map[string]*ethutil.Trie)

	// Tx list might be empty if this is an uncle. Uncles only have their
	// header set.
	if decoder.Get(1).IsNil() == false { // Yes explicitness
		txes := decoder.Get(1)
		block.transactions = make([]*Transaction, txes.Len())
		for i := 0; i < txes.Len(); i++ {
			tx := NewTransactionFromValue(txes.Get(i))

			block.transactions[i] = tx
		}

	}

	if decoder.Get(2).IsNil() == false { // Yes explicitness
		uncles := decoder.Get(2)
		block.Uncles = make([]*Block, uncles.Len())
		for i := 0; i < uncles.Len(); i++ {
			block.Uncles[i] = NewUncleBlockFromValue(uncles.Get(i))
		}
	}

}

func (tx *Transaction) RlpValueDecode(decoder *ethutil.Value) {
	tx.Nonce = decoder.Get(0).Uint()
	tx.Recipient = decoder.Get(1).Bytes()
	tx.Value = decoder.Get(2).BigInt()

	d := decoder.Get(3)
	tx.Data = make([]string, d.Len())
	for i := 0; i < d.Len(); i++ {
		tx.Data[i] = d.Get(i).Str()
	}

	// TODO something going wrong here
	tx.v = byte(decoder.Get(4).Uint())
	tx.r = decoder.Get(5).Bytes()
	tx.s = decoder.Get(6).Bytes()
}

func NewUncleBlockFromValue(header *ethutil.Value) *Block {
	block := &Block{}

	block.PrevHash = header.Get(0).Bytes()
	block.UncleSha = header.Get(1).Bytes()
	block.Coinbase = header.Get(2).Bytes()
	block.state = NewState(ethutil.NewTrie(ethutil.Config.Db, header.Get(3).Val))
	block.TxSha = header.Get(4).Bytes()
	block.Difficulty = header.Get(5).BigInt()
	block.Time = int64(header.Get(6).BigInt().Uint64())
	block.Extra = header.Get(7).Str()
	block.Nonce = header.Get(8).Bytes()

	return block
}

func NewUncleBlockFromValue(header *ethutil.Value) *Block {
	block := &Block{}

	block.PrevHash = header.Get(0).Bytes()
	block.UncleSha = header.Get(1).Bytes()
	block.Coinbase = header.Get(2).Bytes()
	block.state = ethstate.New(ethtrie.New(ethutil.Config.Db, header.Get(3).Val))
	block.TxSha = header.Get(4).Bytes()
	block.Difficulty = header.Get(5).BigInt()
	block.Number = header.Get(6).BigInt()
	block.MinGasPrice = header.Get(7).BigInt()
	block.GasLimit = header.Get(8).BigInt()
	block.GasUsed = header.Get(9).BigInt()
	block.Time = int64(header.Get(10).BigInt().Uint64())
	block.Extra = header.Get(11).Str()
	block.Nonce = header.Get(12).Bytes()

	return block
}

func (self *Receipt) RlpValueDecode(decoder *ethutil.Value) {
	self.Tx = NewTransactionFromValue(decoder.Get(0))
	self.PostState = decoder.Get(1).Bytes()
	self.CumulativeGasUsed = decoder.Get(2).BigInt()
}

func (it *TrieIterator) iterateNode(key []int, currentNode *ethutil.Value, cb EachCallback) {
	if currentNode.Len() == 2 {
		k := CompactDecode(currentNode.Get(0).Str())

		pk := append(key, k...)
		if currentNode.Get(1).Len() != 0 && currentNode.Get(1).Str() == "" {
			it.iterateNode(pk, currentNode.Get(1), cb)
		} else {

			if k[len(k)-1] == 16 {
				cb(DecodeCompact(pk), currentNode.Get(1))
			} else {
				it.fetchNode(pk, currentNode.Get(1).Bytes(), cb)
			}
		}
	} else {
		for i := 0; i < currentNode.Len(); i++ {
			pk := append(key, i)
			if i == 16 && currentNode.Get(i).Len() != 0 {
				cb(DecodeCompact(pk), currentNode.Get(i))
			} else {
				if currentNode.Get(i).Len() != 0 && currentNode.Get(i).Str() == "" {
					it.iterateNode(pk, currentNode.Get(i), cb)
				} else {
					val := currentNode.Get(i).Str()
					if val != "" {
						it.fetchNode(pk, []byte(val), cb)
					}
				}
			}
		}
	}
}

// Some time in the near future this will need refactoring :-)
// XXX Note to self, IsSlice == inline node. Str == sha3 to node
func (it *TrieIterator) workNode(currentNode *ethutil.Value) {
	if currentNode.Len() == 2 {
		k := CompactDecode(currentNode.Get(0).Str())

		if currentNode.Get(1).Str() == "" {
			it.workNode(currentNode.Get(1))
		} else {
			if k[len(k)-1] == 16 {
				it.values = append(it.values, currentNode.Get(1).Str())
			} else {
				it.shas = append(it.shas, currentNode.Get(1).Bytes())
				it.getNode(currentNode.Get(1).Bytes())
			}
		}
	} else {
		for i := 0; i < currentNode.Len(); i++ {
			if i == 16 && currentNode.Get(i).Len() != 0 {
				it.values = append(it.values, currentNode.Get(i).Str())
			} else {
				if currentNode.Get(i).Str() == "" {
					it.workNode(currentNode.Get(i))
				} else {
					val := currentNode.Get(i).Str()
					if val != "" {
						it.shas = append(it.shas, currentNode.Get(1).Bytes())
						it.getNode([]byte(val))
					}
				}
			}
		}
	}
}

func NewKeyPairFromValue(val *ethutil.Value) *KeyPair {
	keyPair := &KeyPair{PrivateKey: val.Get(0).Bytes(), PublicKey: val.Get(1).Bytes()}

	return keyPair
}