neoneo-go/pkg/smartcontract/doc_test.go

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package smartcontract_test
import (
"context"
"encoding/hex"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/rpcclient"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/actor"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
)
func ExampleBuilder() {
// No error checking done at all, intentionally.
c, _ := rpcclient.New(context.Background(), "url", rpcclient.Options{})
neoHash, _ := c.GetNativeContractHash("NeoToken")
pKey, _ := hex.DecodeString("03d9e8b16bd9b22d3345d6d4cde31be1c3e1d161532e3d0ccecb95ece2eb58336e") // Public key.
b := smartcontract.NewBuilder()
// Single NEO "vote" call with a check
b.InvokeWithAssert(neoHash, "vote", pKey)
script, _ := b.Script()
// The script can then be used to create transaction or to invoke via RPC.
res, _ := c.InvokeScript(script, []transaction.Signer{{Account: util.Uint160{0x01, 0x02, 0x03}, Scopes: transaction.CalledByEntry}})
if res.State != "HALT" {
// The script failed
}
b.Reset() // Copy the old script above if you need it!
w, _ := wallet.NewWalletFromFile("somewhere")
// Assuming there is one Account inside
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a, _ := actor.NewSimple(c, w.Accounts[0])
from := w.Accounts[0].Contract.ScriptHash() // Assuming Contract is present.
// Multiple transfers in a single script. If any of them fail whole script fails.
b.InvokeWithAssert(neoHash, "transfer", from, util.Uint160{0x70}, 1, nil)
b.InvokeWithAssert(neoHash, "transfer", from, util.Uint160{0x71}, 10, []byte("data"))
b.InvokeWithAssert(neoHash, "transfer", from, util.Uint160{0x72}, 1, nil)
script, _ = b.Script()
// The script can then be used to create transaction or to invoke via RPC.
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txid, vub, _ := a.SendRun(script)
_ = txid
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_ = vub
}