mirror of
https://github.com/nspcc-dev/neo-go.git
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19201dcf52
* Added utility function GetVarSize * 1) Added Size method: this implied that Fixed8 implements now the serializable interface. 2) Added few arithmetic operation (Add, Sub, div): this will be used to calculated networkfeeand feePerByte. Changed return value of the Value() method to int instead of int64. Modified fixed8_test accordingly. * Implemented Size or MarshalJSON method. - Structs accepting the Size method implement the serializable interface. - Structs accepting the MarshalJSON method implements the customized json marshaller interface. * Added fee calculation * Implemented rcp server method GetRawTransaction * Updated Tests * Fixed: 1) NewFixed8 will accept as input int64 2) race condition affecting configDeafault, blockchainDefault * Simplified Size calculation * 1) Removed global variable blockchainDefault, configDefault 2) Extended Blockchainer interface to include the methods: References, FeePerByte, SystemFee, NetworkFee 3) Deleted fee_test.go, fee.go. Moved corresponding methods to blockchain_test.go and blockchain.go respectively 4) Amended tx_raw_output.go * Simplified GetVarSize Method * Replaced ValueAtAndType with ValueWithType * Cosmetic changes + Added test case getrawtransaction_7 * Clean up Print statement * Filled up keys * Aligned verbose logic with the C#-neo implementation * Implemented @Kim requests Refactor server_test.go * Small fixes * Fixed verbose logic Added more tests Cosmetic changes * Replaced assert.NoError with require.NoError * Fixed tests by adding context.Background() as argument * Fixed tests
104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
package transaction
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import (
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"encoding/binary"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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"github.com/CityOfZion/neo-go/pkg/util"
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)
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// Attribute represents a Transaction attribute.
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type Attribute struct {
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Usage AttrUsage
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Data []byte
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}
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// DecodeBinary implements the Payload interface.
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func (attr *Attribute) DecodeBinary(r io.Reader) error {
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if err := binary.Read(r, binary.LittleEndian, &attr.Usage); err != nil {
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return err
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}
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if attr.Usage == ContractHash ||
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attr.Usage == Vote ||
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(attr.Usage >= Hash1 && attr.Usage <= Hash15) {
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attr.Data = make([]byte, 32)
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return binary.Read(r, binary.LittleEndian, attr.Data)
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}
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if attr.Usage == ECDH02 || attr.Usage == ECDH03 {
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attr.Data = make([]byte, 33)
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attr.Data[0] = byte(attr.Usage)
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return binary.Read(r, binary.LittleEndian, attr.Data[1:])
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}
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if attr.Usage == Script {
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attr.Data = make([]byte, 20)
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return binary.Read(r, binary.LittleEndian, attr.Data)
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}
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if attr.Usage == DescriptionURL {
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attr.Data = make([]byte, 1)
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return binary.Read(r, binary.LittleEndian, attr.Data)
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}
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if attr.Usage == Description || attr.Usage >= Remark {
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lenData := util.ReadVarUint(r)
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attr.Data = make([]byte, lenData)
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return binary.Read(r, binary.LittleEndian, attr.Data)
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}
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return fmt.Errorf("failed decoding TX attribute usage: 0x%2x", attr.Usage)
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}
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// EncodeBinary implements the Payload interface.
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func (attr *Attribute) EncodeBinary(w io.Writer) error {
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if err := binary.Write(w, binary.LittleEndian, &attr.Usage); err != nil {
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return err
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}
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if attr.Usage == ContractHash ||
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attr.Usage == Vote ||
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(attr.Usage >= Hash1 && attr.Usage <= Hash15) {
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return binary.Write(w, binary.LittleEndian, attr.Data)
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}
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if attr.Usage == ECDH02 || attr.Usage == ECDH03 {
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attr.Data[0] = byte(attr.Usage)
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return binary.Write(w, binary.LittleEndian, attr.Data[1:33])
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}
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if attr.Usage == Script {
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return binary.Write(w, binary.LittleEndian, attr.Data)
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}
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if attr.Usage == DescriptionURL {
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if err := util.WriteVarUint(w, uint64(len(attr.Data))); err != nil {
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return err
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}
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return binary.Write(w, binary.LittleEndian, attr.Data)
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}
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if attr.Usage == Description || attr.Usage >= Remark {
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if err := util.WriteVarUint(w, uint64(len(attr.Data))); err != nil {
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return err
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}
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return binary.Write(w, binary.LittleEndian, attr.Data)
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}
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return fmt.Errorf("failed encoding TX attribute usage: 0x%2x", attr.Usage)
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}
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// Size returns the size in number bytes of the Attribute
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func (attr *Attribute) Size() int {
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switch attr.Usage {
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case ContractHash, ECDH02, ECDH03, Vote,
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Hash1, Hash2, Hash3, Hash4, Hash5, Hash6, Hash7, Hash8, Hash9, Hash10, Hash11, Hash12, Hash13, Hash14, Hash15:
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return 33 // uint8 + 32 = size(attrUsage) + 32
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case Script:
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return 21 // uint8 + 20 = size(attrUsage) + 20
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case Description:
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return 2 + len(attr.Data) // uint8 + uint8+ len of data = size(attrUsage) + size(byte) + len of data
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default:
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return 1 + len(attr.Data) // uint8 + len of data = size(attrUsage) + len of data
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}
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}
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// MarshalJSON implements the json Marschaller interface
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func (attr *Attribute) MarshalJSON() ([]byte, error) {
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return json.Marshal(map[string]string{
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"usage": attr.Usage.String(),
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"data": hex.EncodeToString(attr.Data),
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})
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}
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