forked from TrueCloudLab/neoneo-go
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package core
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import (
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"bytes"
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"errors"
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"fmt"
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"sort"
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"github.com/nspcc-dev/neo-go/pkg/core/interop"
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"github.com/nspcc-dev/neo-go/pkg/vm"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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var errGasLimitExceeded = errors.New("gas limit exceeded")
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// storageFind finds stored key-value pair.
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func storageFind(ic *interop.Context) error {
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stcInterface := ic.VM.Estack().Pop().Value()
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stc, ok := stcInterface.(*StorageContext)
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if !ok {
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return fmt.Errorf("%T is not a StorageContext", stcInterface)
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}
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prefix := ic.VM.Estack().Pop().Bytes()
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siMap, err := ic.DAO.GetStorageItemsWithPrefix(stc.ID, prefix)
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if err != nil {
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return err
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}
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filteredMap := stackitem.NewMap()
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for k, v := range siMap {
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filteredMap.Add(stackitem.NewByteArray(append(prefix, []byte(k)...)), stackitem.NewByteArray(v.Value))
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}
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sort.Slice(filteredMap.Value().([]stackitem.MapElement), func(i, j int) bool {
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return bytes.Compare(filteredMap.Value().([]stackitem.MapElement)[i].Key.Value().([]byte),
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filteredMap.Value().([]stackitem.MapElement)[j].Key.Value().([]byte)) == -1
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})
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item := vm.NewMapIterator(filteredMap)
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ic.VM.Estack().PushVal(item)
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return nil
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}
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