neoneo-go/pkg/rpc/response/result/invoke.go

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package result
import (
"encoding/json"
"errors"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
// Invoke represents code invocation result and is used by several RPC calls
// that invoke functions, scripts and generic bytecode. Transaction is
// represented in raw serialized format, use transaction.NewTransactionFromBytes
// or GetTransaction method to deserialize it.
type Invoke struct {
State string
GasConsumed int64
Script []byte
Stack []stackitem.Item
FaultException string
// Transaction represents transaction bytes. Use GetTransaction method to decode it.
Transaction []byte
}
type invokeAux struct {
State string `json:"state"`
GasConsumed fixedn.Fixed8 `json:"gasconsumed"`
Script []byte `json:"script"`
Stack json.RawMessage `json:"stack"`
FaultException string `json:"exception,omitempty"`
Transaction []byte `json:"tx,omitempty"`
}
// MarshalJSON implements json.Marshaler.
func (r Invoke) MarshalJSON() ([]byte, error) {
var st json.RawMessage
arr := make([]json.RawMessage, len(r.Stack))
for i := range arr {
data, err := stackitem.ToJSONWithTypes(r.Stack[i])
if err != nil {
st = []byte(`"error: recursive reference"`)
break
}
arr[i] = data
}
var err error
if st == nil {
st, err = json.Marshal(arr)
if err != nil {
return nil, err
}
}
return json.Marshal(&invokeAux{
GasConsumed: fixedn.Fixed8(r.GasConsumed),
Script: r.Script,
State: r.State,
Stack: st,
FaultException: r.FaultException,
Transaction: r.Transaction,
})
}
// UnmarshalJSON implements json.Unmarshaler.
func (r *Invoke) UnmarshalJSON(data []byte) error {
aux := new(invokeAux)
if err := json.Unmarshal(data, aux); err != nil {
return err
}
var arr []json.RawMessage
if err := json.Unmarshal(aux.Stack, &arr); err == nil {
st := make([]stackitem.Item, len(arr))
for i := range arr {
st[i], err = stackitem.FromJSONWithTypes(arr[i])
if err != nil {
break
}
}
if err == nil {
r.Stack = st
}
}
r.GasConsumed = int64(aux.GasConsumed)
r.Script = aux.Script
r.State = aux.State
r.FaultException = aux.FaultException
r.Transaction = aux.Transaction
return nil
}
// GetTransaction returns decoded transaction from Invoke.Transaction bytes.
func (r *Invoke) GetTransaction(magic netmode.Magic) (*transaction.Transaction, error) {
if r.Transaction == nil {
return nil, errors.New("empty transaction")
}
return transaction.NewTransactionFromBytes(magic, r.Transaction)
}