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https://github.com/nspcc-dev/neo-go.git
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5f13de3a76
If we need a positive number we can do `IsUint64()` instead of checking that `Int64()` is `> 0`.
51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package state
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import (
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"errors"
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"fmt"
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"math"
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"math/big"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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// Deposit represents GAS deposit from Notary contract.
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type Deposit struct {
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Amount *big.Int
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Till uint32
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}
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// ToStackItem implements stackitem.Convertible interface. It never returns an
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// error.
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func (d *Deposit) ToStackItem() (stackitem.Item, error) {
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return stackitem.NewStruct([]stackitem.Item{
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stackitem.NewBigInteger(d.Amount),
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stackitem.Make(d.Till),
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}), nil
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}
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// FromStackItem implements stackitem.Convertible interface.
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func (d *Deposit) FromStackItem(it stackitem.Item) error {
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items, ok := it.Value().([]stackitem.Item)
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if !ok {
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return errors.New("not a struct")
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}
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if len(items) != 2 {
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return errors.New("wrong number of elements")
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}
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amount, err := items[0].TryInteger()
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if err != nil {
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return fmt.Errorf("invalid amount: %w", err)
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}
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till, err := items[1].TryInteger()
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if err != nil {
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return fmt.Errorf("invalid till: %w", err)
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}
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tiu64 := till.Uint64()
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if !till.IsUint64() || tiu64 > math.MaxUint32 {
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return errors.New("wrong till value")
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}
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d.Amount = amount
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d.Till = uint32(tiu64)
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return nil
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}
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