0092330fe1
1. Keep initDone check only for the places where cache is directly accessed. We don't need to check it in other places, otherwise we have a mess of duplicating checks. 2. Fix bug in code related to block deserialisation. There's no magic, so checking that initialisation is done is not enough for proper block deserialisation. We need to manually fill StateRootEnabled field. 3. Since transaction doesn't need network magic to compute its hash, we don't need to perform Client initialisation before transaction-related requests. 4. Check that cache is initialised before accessing network magic. 5. Refactor the way Policy contract hash is fetched for Client requests. We don't really need Client initialisation for that, it's OK to fetch Policy hash on-the-fly.
233 lines
7.7 KiB
Go
233 lines
7.7 KiB
Go
package client
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import (
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/encoding/address"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/emit"
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"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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)
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// NEP11Decimals invokes `decimals` NEP-11 method on a specified contract.
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func (c *Client) NEP11Decimals(tokenHash util.Uint160) (int64, error) {
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return c.nepDecimals(tokenHash)
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}
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// NEP11Symbol invokes `symbol` NEP-11 method on a specified contract.
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func (c *Client) NEP11Symbol(tokenHash util.Uint160) (string, error) {
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return c.nepSymbol(tokenHash)
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}
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// NEP11TotalSupply invokes `totalSupply` NEP-11 method on a specified contract.
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func (c *Client) NEP11TotalSupply(tokenHash util.Uint160) (int64, error) {
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return c.nepTotalSupply(tokenHash)
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}
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// NEP11BalanceOf invokes `balanceOf` NEP-11 method on a specified contract.
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func (c *Client) NEP11BalanceOf(tokenHash, owner util.Uint160) (int64, error) {
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return c.nepBalanceOf(tokenHash, owner, nil)
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}
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// NEP11TokenInfo returns full NEP-11 token info.
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func (c *Client) NEP11TokenInfo(tokenHash util.Uint160) (*wallet.Token, error) {
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return c.nepTokenInfo(tokenHash, manifest.NEP11StandardName)
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}
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// TransferNEP11 creates an invocation transaction that invokes 'transfer' method
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// on a given token to move the whole NEP-11 token with the specified token ID to
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// given account and sends it to the network returning just a hash of it.
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func (c *Client) TransferNEP11(acc *wallet.Account, to util.Uint160,
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tokenHash util.Uint160, tokenID string, data interface{}, gas int64, cosigners []SignerAccount) (util.Uint256, error) {
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tx, err := c.CreateNEP11TransferTx(acc, tokenHash, gas, cosigners, to, tokenID, data)
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if err != nil {
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return util.Uint256{}, err
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}
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return c.SignAndPushTx(tx, acc, cosigners)
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}
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// CreateNEP11TransferTx creates an invocation transaction for the 'transfer'
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// method of a given contract (token) to move the whole (or the specified amount
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// of) NEP-11 token with the specified token ID to given account and returns it.
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// The returned transaction is not signed. CreateNEP11TransferTx is also a
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// helper for TransferNEP11 and TransferNEP11D.
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// `args` for TransferNEP11: to util.Uint160, tokenID string, data interface{};
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// `args` for TransferNEP11D: from, to util.Uint160, amount int64, tokenID string, data interface{}.
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func (c *Client) CreateNEP11TransferTx(acc *wallet.Account, tokenHash util.Uint160,
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gas int64, cosigners []SignerAccount, args ...interface{}) (*transaction.Transaction, error) {
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w := io.NewBufBinWriter()
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emit.AppCall(w.BinWriter, tokenHash, "transfer", callflag.All, args...)
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emit.Opcodes(w.BinWriter, opcode.ASSERT)
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if w.Err != nil {
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return nil, fmt.Errorf("failed to create NEP-11 transfer script: %w", w.Err)
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}
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from, err := address.StringToUint160(acc.Address)
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if err != nil {
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return nil, fmt.Errorf("bad account address: %w", err)
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}
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return c.CreateTxFromScript(w.Bytes(), acc, -1, gas, append([]SignerAccount{{
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Signer: transaction.Signer{
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Account: from,
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Scopes: transaction.CalledByEntry,
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},
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Account: acc,
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}}, cosigners...))
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}
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// NEP11TokensOf returns an array of token IDs for the specified owner of the specified NFT token.
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func (c *Client) NEP11TokensOf(tokenHash util.Uint160, owner util.Uint160) ([][]byte, error) {
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result, err := c.InvokeFunction(tokenHash, "tokensOf", []smartcontract.Parameter{
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{
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Type: smartcontract.Hash160Type,
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Value: owner,
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},
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}, nil)
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if err != nil {
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return nil, err
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}
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err = getInvocationError(result)
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if err != nil {
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return nil, err
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}
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arr, err := topIterableFromStack(result.Stack, []byte{})
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if err != nil {
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return nil, fmt.Errorf("failed to get token IDs from stack: %w", err)
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}
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ids := make([][]byte, len(arr))
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for i := range ids {
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ids[i] = arr[i].([]byte)
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}
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return ids, nil
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}
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// Non-divisible NFT methods section start.
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// NEP11NDOwnerOf invokes `ownerOf` non-devisible NEP-11 method with the
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// specified token ID on a specified contract.
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func (c *Client) NEP11NDOwnerOf(tokenHash util.Uint160, tokenID []byte) (util.Uint160, error) {
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result, err := c.InvokeFunction(tokenHash, "ownerOf", []smartcontract.Parameter{
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{
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Type: smartcontract.ByteArrayType,
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Value: tokenID,
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},
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}, nil)
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if err != nil {
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return util.Uint160{}, err
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}
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err = getInvocationError(result)
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if err != nil {
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return util.Uint160{}, err
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}
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return topUint160FromStack(result.Stack)
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}
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// Non-divisible NFT methods section end.
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// Divisible NFT methods section start.
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// TransferNEP11D creates an invocation transaction that invokes 'transfer'
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// method on a given token to move specified amount of divisible NEP-11 assets
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// (in FixedN format using contract's number of decimals) to given account and
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// sends it to the network returning just a hash of it.
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func (c *Client) TransferNEP11D(acc *wallet.Account, to util.Uint160,
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tokenHash util.Uint160, amount int64, tokenID []byte, data interface{}, gas int64, cosigners []SignerAccount) (util.Uint256, error) {
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from, err := address.StringToUint160(acc.Address)
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if err != nil {
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return util.Uint256{}, fmt.Errorf("bad account address: %w", err)
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}
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tx, err := c.CreateNEP11TransferTx(acc, tokenHash, gas, cosigners, from, to, amount, tokenID, data)
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if err != nil {
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return util.Uint256{}, err
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}
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return c.SignAndPushTx(tx, acc, cosigners)
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}
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// NEP11DBalanceOf invokes `balanceOf` divisible NEP-11 method on a
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// specified contract.
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func (c *Client) NEP11DBalanceOf(tokenHash, owner util.Uint160, tokenID []byte) (int64, error) {
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return c.nepBalanceOf(tokenHash, owner, tokenID)
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}
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// NEP11DOwnerOf returns list of the specified NEP-11 divisible token owners.
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func (c *Client) NEP11DOwnerOf(tokenHash util.Uint160, tokenID []byte) ([]util.Uint160, error) {
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result, err := c.InvokeFunction(tokenHash, "ownerOf", []smartcontract.Parameter{
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{
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Type: smartcontract.ByteArrayType,
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Value: tokenID,
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},
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}, nil)
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if err != nil {
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return nil, err
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}
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err = getInvocationError(result)
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if err != nil {
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return nil, err
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}
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arr, err := topIterableFromStack(result.Stack, util.Uint160{})
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if err != nil {
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return nil, fmt.Errorf("failed to get token IDs from stack: %w", err)
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}
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owners := make([]util.Uint160, len(arr))
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for i := range owners {
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owners[i] = arr[i].(util.Uint160)
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}
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return owners, nil
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}
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// Divisible NFT methods section end.
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// Optional NFT methods section start.
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// NEP11Properties invokes `properties` optional NEP-11 method on a
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// specified contract.
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func (c *Client) NEP11Properties(tokenHash util.Uint160, tokenID []byte) (*stackitem.Map, error) {
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result, err := c.InvokeFunction(tokenHash, "properties", []smartcontract.Parameter{{
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Type: smartcontract.ByteArrayType,
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Value: tokenID,
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}}, nil)
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if err != nil {
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return nil, err
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}
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err = getInvocationError(result)
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if err != nil {
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return nil, err
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}
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return topMapFromStack(result.Stack)
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}
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// NEP11Tokens returns list of the tokens minted by the contract.
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func (c *Client) NEP11Tokens(tokenHash util.Uint160) ([][]byte, error) {
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result, err := c.InvokeFunction(tokenHash, "tokens", []smartcontract.Parameter{}, nil)
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if err != nil {
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return nil, err
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}
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err = getInvocationError(result)
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if err != nil {
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return nil, err
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}
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arr, err := topIterableFromStack(result.Stack, []byte{})
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if err != nil {
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return nil, fmt.Errorf("failed to get token IDs from stack: %w", err)
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}
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tokens := make([][]byte, len(arr))
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for i := range tokens {
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tokens[i] = arr[i].([]byte)
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}
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return tokens, nil
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}
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// Optional NFT methods section end.
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