forked from TrueCloudLab/neoneo-go
000109bfd1
Added missing function from smart-contract manifest. Close #2732 Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
549 lines
20 KiB
Go
549 lines
20 KiB
Go
// Package nns provide RPC wrappers for the non-native NNS contract.
|
|
// This is Neo N3 NNS contract wrapper, the source code of the contract can be found here:
|
|
// https://github.com/neo-project/non-native-contracts/blob/8d72b92e5e5705d763232bcc24784ced0fb8fc87/src/NameService/NameService.cs
|
|
package nns
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
"unicode/utf8"
|
|
|
|
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
|
|
"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
|
|
"github.com/nspcc-dev/neo-go/pkg/rpcclient/nep11"
|
|
"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
|
|
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
|
|
"github.com/nspcc-dev/neo-go/pkg/util"
|
|
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
|
|
)
|
|
|
|
// MaxNameLength is the max length of domain name.
|
|
const MaxNameLength = 255
|
|
|
|
// SetAdminEvent represents "SetAdmin" event emitted by the contract.
|
|
type SetAdminEvent struct {
|
|
Name string
|
|
OldAdmin util.Uint160
|
|
NewAdmin util.Uint160
|
|
}
|
|
|
|
// RenewEvent represents "Renew" event emitted by the contract.
|
|
type RenewEvent struct {
|
|
Name string
|
|
OldExpiration *big.Int
|
|
NewExpiration *big.Int
|
|
}
|
|
|
|
// Invoker is used by ContractReader to call various safe methods.
|
|
type Invoker interface {
|
|
nep11.Invoker
|
|
}
|
|
|
|
// Actor is used by Contract to call state-changing methods.
|
|
type Actor interface {
|
|
Invoker
|
|
nep11.Actor
|
|
|
|
MakeCall(contract util.Uint160, method string, params ...any) (*transaction.Transaction, error)
|
|
MakeRun(script []byte) (*transaction.Transaction, error)
|
|
MakeUnsignedCall(contract util.Uint160, method string, attrs []transaction.Attribute, params ...any) (*transaction.Transaction, error)
|
|
MakeUnsignedRun(script []byte, attrs []transaction.Attribute) (*transaction.Transaction, error)
|
|
SendCall(contract util.Uint160, method string, params ...any) (util.Uint256, uint32, error)
|
|
SendRun(script []byte) (util.Uint256, uint32, error)
|
|
}
|
|
|
|
// ContractReader implements safe contract methods.
|
|
type ContractReader struct {
|
|
nep11.NonDivisibleReader
|
|
|
|
invoker Invoker
|
|
hash util.Uint160
|
|
}
|
|
|
|
// Contract provides full NeoNameService interface, both safe and state-changing methods.
|
|
type Contract struct {
|
|
ContractReader
|
|
nep11.BaseWriter
|
|
|
|
actor Actor
|
|
hash util.Uint160
|
|
}
|
|
|
|
// NewReader creates an instance of ContractReader using provided contract hash and the given Invoker.
|
|
func NewReader(invoker Invoker, hash util.Uint160) *ContractReader {
|
|
return &ContractReader{*nep11.NewNonDivisibleReader(invoker, hash), invoker, hash}
|
|
}
|
|
|
|
// New creates an instance of Contract using provided contract hash and the given Actor.
|
|
func New(actor Actor, hash util.Uint160) *Contract {
|
|
var nep11ndt = nep11.NewNonDivisible(actor, hash)
|
|
return &Contract{ContractReader{nep11ndt.NonDivisibleReader, actor, hash}, nep11ndt.BaseWriter, actor, hash}
|
|
}
|
|
|
|
// Roots invokes `roots` method of contract.
|
|
func (c *ContractReader) Roots() (*RootIterator, error) {
|
|
sess, iter, err := unwrap.SessionIterator(c.invoker.Call(c.hash, "roots"))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &RootIterator{
|
|
client: c.invoker,
|
|
iterator: iter,
|
|
session: sess,
|
|
}, nil
|
|
}
|
|
|
|
// RootsExpanded is similar to Roots (uses the same contract
|
|
// method), but can be useful if the server used doesn't support sessions and
|
|
// doesn't expand iterators. It creates a script that will get the specified
|
|
// number of result items from the iterator right in the VM and return them to
|
|
// you. It's only limited by VM stack and GAS available for RPC invocations.
|
|
func (c *ContractReader) RootsExpanded(_numOfIteratorItems int) ([]string, error) {
|
|
arr, err := unwrap.Array(c.invoker.CallAndExpandIterator(c.hash, "roots", _numOfIteratorItems))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return itemsToRoots(arr)
|
|
}
|
|
|
|
// GetPrice invokes `getPrice` method of contract.
|
|
func (c *ContractReader) GetPrice(length uint8) (*big.Int, error) {
|
|
return unwrap.BigInt(c.invoker.Call(c.hash, "getPrice", length))
|
|
}
|
|
|
|
// IsAvailable invokes `isAvailable` method of contract.
|
|
func (c *ContractReader) IsAvailable(name string) (bool, error) {
|
|
return unwrap.Bool(c.invoker.Call(c.hash, "isAvailable", name))
|
|
}
|
|
|
|
// GetRecord invokes `getRecord` method of contract.
|
|
func (c *ContractReader) GetRecord(name string, typev RecordType) (string, error) {
|
|
return unwrap.UTF8String(c.invoker.Call(c.hash, "getRecord", name, typev))
|
|
}
|
|
|
|
// GetAllRecords invokes `getAllRecords` method of contract.
|
|
func (c *ContractReader) GetAllRecords(name string) (*RecordIterator, error) {
|
|
sess, iter, err := unwrap.SessionIterator(c.invoker.Call(c.hash, "getAllRecords", name))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &RecordIterator{
|
|
client: c.invoker,
|
|
iterator: iter,
|
|
session: sess,
|
|
}, nil
|
|
}
|
|
|
|
// GetAllRecordsExpanded is similar to GetAllRecords (uses the same contract
|
|
// method), but can be useful if the server used doesn't support sessions and
|
|
// doesn't expand iterators. It creates a script that will get the specified
|
|
// number of result items from the iterator right in the VM and return them to
|
|
// you. It's only limited by VM stack and GAS available for RPC invocations.
|
|
func (c *ContractReader) GetAllRecordsExpanded(name string, _numOfIteratorItems int) ([]RecordState, error) {
|
|
arr, err := unwrap.Array(c.invoker.CallAndExpandIterator(c.hash, "getAllRecords", _numOfIteratorItems, name))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return itemsToRecords(arr)
|
|
}
|
|
|
|
// Resolve invokes `resolve` method of contract.
|
|
func (c *ContractReader) Resolve(name string, typev RecordType) (string, error) {
|
|
return unwrap.UTF8String(c.invoker.Call(c.hash, "resolve", name, int64(typev)))
|
|
}
|
|
|
|
// Update creates a transaction invoking `update` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) Update(nef []byte, manifest string) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "update", nef, manifest)
|
|
}
|
|
|
|
// UpdateTransaction creates a transaction invoking `update` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) UpdateTransaction(nef []byte, manifest string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "update", nef, manifest)
|
|
}
|
|
|
|
// UpdateUnsigned creates a transaction invoking `update` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) UpdateUnsigned(nef []byte, manifest string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "update", nil, nef, manifest)
|
|
}
|
|
|
|
// AddRoot creates a transaction invoking `addRoot` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) AddRoot(root string) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "addRoot", root)
|
|
}
|
|
|
|
// AddRootTransaction creates a transaction invoking `addRoot` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) AddRootTransaction(root string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "addRoot", root)
|
|
}
|
|
|
|
// AddRootUnsigned creates a transaction invoking `addRoot` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) AddRootUnsigned(root string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "addRoot", nil, root)
|
|
}
|
|
|
|
// SetPrice creates a transaction invoking `setPrice` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) SetPrice(priceList []int64) (util.Uint256, uint32, error) {
|
|
anyPriceList := make([]any, len(priceList))
|
|
for i, price := range priceList {
|
|
anyPriceList[i] = price
|
|
}
|
|
return c.actor.SendCall(c.hash, "setPrice", anyPriceList)
|
|
}
|
|
|
|
// SetPriceTransaction creates a transaction invoking `setPrice` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) SetPriceTransaction(priceList []int64) (*transaction.Transaction, error) {
|
|
anyPriceList := make([]any, len(priceList))
|
|
for i, price := range priceList {
|
|
anyPriceList[i] = price
|
|
}
|
|
return c.actor.MakeCall(c.hash, "setPrice", anyPriceList)
|
|
}
|
|
|
|
// SetPriceUnsigned creates a transaction invoking `setPrice` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) SetPriceUnsigned(priceList []int64) (*transaction.Transaction, error) {
|
|
anyPriceList := make([]any, len(priceList))
|
|
for i, price := range priceList {
|
|
anyPriceList[i] = price
|
|
}
|
|
return c.actor.MakeUnsignedCall(c.hash, "setPrice", nil, anyPriceList)
|
|
}
|
|
|
|
func (c *Contract) scriptForRegister(name string, owner util.Uint160) ([]byte, error) {
|
|
return smartcontract.CreateCallWithAssertScript(c.hash, "register", name, owner)
|
|
}
|
|
|
|
// Register creates a transaction invoking `register` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) Register(name string, owner util.Uint160) (util.Uint256, uint32, error) {
|
|
script, err := c.scriptForRegister(name, owner)
|
|
if err != nil {
|
|
return util.Uint256{}, 0, err
|
|
}
|
|
return c.actor.SendRun(script)
|
|
}
|
|
|
|
// RegisterTransaction creates a transaction invoking `register` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) RegisterTransaction(name string, owner util.Uint160) (*transaction.Transaction, error) {
|
|
script, err := c.scriptForRegister(name, owner)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return c.actor.MakeRun(script)
|
|
}
|
|
|
|
// RegisterUnsigned creates a transaction invoking `register` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) RegisterUnsigned(name string, owner util.Uint160) (*transaction.Transaction, error) {
|
|
script, err := c.scriptForRegister(name, owner)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return c.actor.MakeUnsignedRun(script, nil)
|
|
}
|
|
|
|
// Renew creates a transaction invoking `renew` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) Renew(name string) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "renew", name)
|
|
}
|
|
|
|
// RenewTransaction creates a transaction invoking `renew` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) RenewTransaction(name string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "renew", name)
|
|
}
|
|
|
|
// RenewUnsigned creates a transaction invoking `renew` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) RenewUnsigned(name string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "renew", nil, name)
|
|
}
|
|
|
|
// Renew2 creates a transaction invoking `renew` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) Renew2(name string, years int64) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "renew", name, years)
|
|
}
|
|
|
|
// Renew2Transaction creates a transaction invoking `renew` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) Renew2Transaction(name string, years int64) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "renew", name, years)
|
|
}
|
|
|
|
// Renew2Unsigned creates a transaction invoking `renew` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) Renew2Unsigned(name string, years int64) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "renew", nil, name, years)
|
|
}
|
|
|
|
// SetAdmin creates a transaction invoking `setAdmin` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) SetAdmin(name string, admin util.Uint160) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "setAdmin", name, admin)
|
|
}
|
|
|
|
// SetAdminTransaction creates a transaction invoking `setAdmin` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) SetAdminTransaction(name string, admin util.Uint160) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "setAdmin", name, admin)
|
|
}
|
|
|
|
// SetAdminUnsigned creates a transaction invoking `setAdmin` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) SetAdminUnsigned(name string, admin util.Uint160) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "setAdmin", nil, name, admin)
|
|
}
|
|
|
|
// SetRecord creates a transaction invoking `setRecord` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) SetRecord(name string, typev RecordType, data string) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "setRecord", name, typev, data)
|
|
}
|
|
|
|
// SetRecordTransaction creates a transaction invoking `setRecord` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) SetRecordTransaction(name string, typev RecordType, data string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "setRecord", name, typev, data)
|
|
}
|
|
|
|
// SetRecordUnsigned creates a transaction invoking `setRecord` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) SetRecordUnsigned(name string, typev RecordType, data string) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "setRecord", nil, name, typev, data)
|
|
}
|
|
|
|
// DeleteRecord creates a transaction invoking `deleteRecord` method of the contract.
|
|
// This transaction is signed and immediately sent to the network.
|
|
// The values returned are its hash, ValidUntilBlock value and error if any.
|
|
func (c *Contract) DeleteRecord(name string, typev RecordType) (util.Uint256, uint32, error) {
|
|
return c.actor.SendCall(c.hash, "deleteRecord", name, typev)
|
|
}
|
|
|
|
// DeleteRecordTransaction creates a transaction invoking `deleteRecord` method of the contract.
|
|
// This transaction is signed, but not sent to the network, instead it's
|
|
// returned to the caller.
|
|
func (c *Contract) DeleteRecordTransaction(name string, typev RecordType) (*transaction.Transaction, error) {
|
|
return c.actor.MakeCall(c.hash, "deleteRecord", name, typev)
|
|
}
|
|
|
|
// DeleteRecordUnsigned creates a transaction invoking `deleteRecord` method of the contract.
|
|
// This transaction is not signed, it's simply returned to the caller.
|
|
// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
|
|
// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
|
|
func (c *Contract) DeleteRecordUnsigned(name string, typev RecordType) (*transaction.Transaction, error) {
|
|
return c.actor.MakeUnsignedCall(c.hash, "deleteRecord", nil, name, typev)
|
|
}
|
|
|
|
// SetAdminEventsFromApplicationLog retrieves a set of all emitted events
|
|
// with "SetAdmin" name from the provided [result.ApplicationLog].
|
|
func SetAdminEventsFromApplicationLog(log *result.ApplicationLog) ([]*SetAdminEvent, error) {
|
|
if log == nil {
|
|
return nil, errors.New("nil application log")
|
|
}
|
|
|
|
var res []*SetAdminEvent
|
|
for i, ex := range log.Executions {
|
|
for j, e := range ex.Events {
|
|
if e.Name != "SetAdmin" {
|
|
continue
|
|
}
|
|
event := new(SetAdminEvent)
|
|
err := event.FromStackItem(e.Item)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to deserialize SetAdminEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
|
|
}
|
|
res = append(res, event)
|
|
}
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
// FromStackItem converts provided [stackitem.Array] to SetAdminEvent or
|
|
// returns an error if it's not possible to do to so.
|
|
func (e *SetAdminEvent) FromStackItem(item *stackitem.Array) error {
|
|
if item == nil {
|
|
return errors.New("nil item")
|
|
}
|
|
arr, ok := item.Value().([]stackitem.Item)
|
|
if !ok {
|
|
return errors.New("not an array")
|
|
}
|
|
if len(arr) != 3 {
|
|
return errors.New("wrong number of structure elements")
|
|
}
|
|
|
|
var (
|
|
index = -1
|
|
err error
|
|
)
|
|
index++
|
|
e.Name, err = func(item stackitem.Item) (string, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
if !utf8.Valid(b) {
|
|
return "", errors.New("not a UTF-8 string")
|
|
}
|
|
return string(b), nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field Name: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.OldAdmin, err = func(item stackitem.Item) (util.Uint160, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
u, err := util.Uint160DecodeBytesBE(b)
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
return u, nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field OldAdmin: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.NewAdmin, err = func(item stackitem.Item) (util.Uint160, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
u, err := util.Uint160DecodeBytesBE(b)
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
return u, nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field NewAdmin: %w", err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// RenewEventsFromApplicationLog retrieves a set of all emitted events
|
|
// with "Renew" name from the provided [result.ApplicationLog].
|
|
func RenewEventsFromApplicationLog(log *result.ApplicationLog) ([]*RenewEvent, error) {
|
|
if log == nil {
|
|
return nil, errors.New("nil application log")
|
|
}
|
|
|
|
var res []*RenewEvent
|
|
for i, ex := range log.Executions {
|
|
for j, e := range ex.Events {
|
|
if e.Name != "Renew" {
|
|
continue
|
|
}
|
|
event := new(RenewEvent)
|
|
err := event.FromStackItem(e.Item)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to deserialize RenewEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
|
|
}
|
|
res = append(res, event)
|
|
}
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
// FromStackItem converts provided [stackitem.Array] to RenewEvent or
|
|
// returns an error if it's not possible to do to so.
|
|
func (e *RenewEvent) FromStackItem(item *stackitem.Array) error {
|
|
if item == nil {
|
|
return errors.New("nil item")
|
|
}
|
|
arr, ok := item.Value().([]stackitem.Item)
|
|
if !ok {
|
|
return errors.New("not an array")
|
|
}
|
|
if len(arr) != 3 {
|
|
return errors.New("wrong number of structure elements")
|
|
}
|
|
|
|
var (
|
|
index = -1
|
|
err error
|
|
)
|
|
index++
|
|
e.Name, err = func(item stackitem.Item) (string, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
if !utf8.Valid(b) {
|
|
return "", errors.New("not a UTF-8 string")
|
|
}
|
|
return string(b), nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field Name: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.OldExpiration, err = arr[index].TryInteger()
|
|
if err != nil {
|
|
return fmt.Errorf("field OldExpiration: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.NewExpiration, err = arr[index].TryInteger()
|
|
if err != nil {
|
|
return fmt.Errorf("field NewExpiration: %w", err)
|
|
}
|
|
|
|
return nil
|
|
}
|