neoneo-go/pkg/core/state/notification_event.go

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package state
import (
"errors"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
)
// NotificationEvent is a tuple of scripthash that emitted the Item as a
// notification and that item itself.
type NotificationEvent struct {
ScriptHash util.Uint160
Name string
Item *stackitem.Array
}
// AppExecResult represent the result of the script execution, gathering together
// all resulting notifications, state, stack and other metadata.
type AppExecResult struct {
TxHash util.Uint256
Trigger trigger.Type
VMState vm.State
GasConsumed int64
Stack []stackitem.Item
Events []NotificationEvent
}
// EncodeBinary implements the Serializable interface.
func (ne *NotificationEvent) EncodeBinary(w *io.BinWriter) {
ne.ScriptHash.EncodeBinary(w)
w.WriteString(ne.Name)
stackitem.EncodeBinaryStackItem(ne.Item, w)
}
// DecodeBinary implements the Serializable interface.
func (ne *NotificationEvent) DecodeBinary(r *io.BinReader) {
ne.ScriptHash.DecodeBinary(r)
ne.Name = r.ReadString()
item := stackitem.DecodeBinaryStackItem(r)
if r.Err != nil {
return
}
arr, ok := item.Value().([]stackitem.Item)
if !ok {
r.Err = errors.New("Array or Struct expected")
return
}
ne.Item = stackitem.NewArray(arr)
}
// EncodeBinary implements the Serializable interface.
func (aer *AppExecResult) EncodeBinary(w *io.BinWriter) {
w.WriteBytes(aer.TxHash[:])
w.WriteB(byte(aer.Trigger))
w.WriteB(byte(aer.VMState))
w.WriteU64LE(uint64(aer.GasConsumed))
stackitem.EncodeBinaryStackItem(stackitem.NewArray(aer.Stack), w)
w.WriteArray(aer.Events)
}
// DecodeBinary implements the Serializable interface.
func (aer *AppExecResult) DecodeBinary(r *io.BinReader) {
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r.ReadBytes(aer.TxHash[:])
aer.Trigger = trigger.Type(r.ReadB())
aer.VMState = vm.State(r.ReadB())
aer.GasConsumed = int64(r.ReadU64LE())
item := stackitem.DecodeBinaryStackItem(r)
if r.Err == nil {
arr, ok := item.Value().([]stackitem.Item)
if !ok {
r.Err = errors.New("array expected")
return
}
aer.Stack = arr
}
r.ReadArray(&aer.Events)
}