65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package transaction
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import (
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"errors"
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"math/rand"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// InvocationTX represents a invocation transaction and is used to
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// deploy smart contract to the NEO blockchain.
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type InvocationTX struct {
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// Script output of the smart contract.
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Script []byte
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// Gas cost of the smart contract.
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Gas util.Fixed8
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Version uint8
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}
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// NewInvocationTX returns a new invocation transaction.
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func NewInvocationTX(script []byte, gas util.Fixed8) *Transaction {
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return &Transaction{
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Type: InvocationType,
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Version: 1,
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Nonce: rand.Uint32(),
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Data: &InvocationTX{
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Script: script,
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Gas: gas,
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Version: 1,
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},
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Attributes: []Attribute{},
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Cosigners: []Cosigner{},
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Inputs: []Input{},
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Outputs: []Output{},
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Scripts: []Witness{},
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}
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}
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// DecodeBinary implements Serializable interface.
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func (tx *InvocationTX) DecodeBinary(br *io.BinReader) {
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tx.Script = br.ReadVarBytes()
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if br.Err == nil && len(tx.Script) == 0 {
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br.Err = errors.New("no script")
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return
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}
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if tx.Version >= 1 {
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tx.Gas.DecodeBinary(br)
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if br.Err == nil && tx.Gas.LessThan(0) {
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br.Err = errors.New("negative gas")
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return
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}
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} else {
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tx.Gas = util.Fixed8FromInt64(0)
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}
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}
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// EncodeBinary implements Serializable interface.
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func (tx *InvocationTX) EncodeBinary(bw *io.BinWriter) {
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bw.WriteVarBytes(tx.Script)
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if tx.Version >= 1 {
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tx.Gas.EncodeBinary(bw)
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}
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}
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