frostfs-node/pkg/morph/client/balance/decimals.go

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package balance
import (
"fmt"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
)
// Decimals decimal precision of currency transactions
// through the Balance contract call, and returns it.
func (c *Client) Decimals() (uint32, error) {
invokePrm := client.TestInvokePrm{}
invokePrm.SetMethod(decimalsMethod)
prms, err := c.client.TestInvoke(invokePrm)
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if err != nil {
return 0, fmt.Errorf("could not perform test invocation (%s): %w", decimalsMethod, err)
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} else if ln := len(prms); ln != 1 {
return 0, fmt.Errorf("unexpected stack item count (%s): %d", decimalsMethod, ln)
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}
decimals, err := client.IntFromStackItem(prms[0])
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if err != nil {
return 0, fmt.Errorf("could not get integer stack item from stack item (%s): %w", decimalsMethod, err)
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}
return uint32(decimals), nil
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}