mirror of
https://github.com/nspcc-dev/neo-go.git
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112 lines
2.3 KiB
Go
112 lines
2.3 KiB
Go
package core
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import (
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"bytes"
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"io"
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"github.com/CityOfZion/neo-go/pkg/core/storage"
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"github.com/CityOfZion/neo-go/pkg/core/transaction"
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"github.com/CityOfZion/neo-go/pkg/crypto/keys"
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"github.com/CityOfZion/neo-go/pkg/util"
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)
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const feeMode = 0x0
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// Assets is mapping between AssetID and the AssetState.
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type Assets map[util.Uint256]*AssetState
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func (a Assets) commit(b storage.Batch) error {
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buf := new(bytes.Buffer)
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for hash, state := range a {
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if err := state.EncodeBinary(buf); err != nil {
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return err
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}
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key := storage.AppendPrefix(storage.STAsset, hash.Bytes())
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b.Put(key, buf.Bytes())
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buf.Reset()
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}
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return nil
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}
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// AssetState represents the state of an NEO registered Asset.
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type AssetState struct {
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ID util.Uint256
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AssetType transaction.AssetType
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Name string
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Amount util.Fixed8
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Available util.Fixed8
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Precision uint8
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FeeMode uint8
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FeeAddress util.Uint160
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Owner *keys.PublicKey
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Admin util.Uint160
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Issuer util.Uint160
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Expiration uint32
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IsFrozen bool
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}
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// DecodeBinary implements the Payload interface.
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func (a *AssetState) DecodeBinary(r io.Reader) error {
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br := util.BinReader{R: r}
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br.ReadLE(&a.ID)
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br.ReadLE(&a.AssetType)
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a.Name = br.ReadString()
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br.ReadLE(&a.Amount)
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br.ReadLE(&a.Available)
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br.ReadLE(&a.Precision)
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br.ReadLE(&a.FeeMode)
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br.ReadLE(&a.FeeAddress)
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if br.Err != nil {
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return br.Err
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}
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a.Owner = &keys.PublicKey{}
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if err := a.Owner.DecodeBinary(r); err != nil {
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return err
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}
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br.ReadLE(&a.Admin)
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br.ReadLE(&a.Issuer)
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br.ReadLE(&a.Expiration)
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br.ReadLE(&a.IsFrozen)
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return br.Err
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}
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// EncodeBinary implements the Payload interface.
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func (a *AssetState) EncodeBinary(w io.Writer) error {
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bw := util.BinWriter{W: w}
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bw.WriteLE(a.ID)
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bw.WriteLE(a.AssetType)
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bw.WriteString(a.Name)
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bw.WriteLE(a.Amount)
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bw.WriteLE(a.Available)
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bw.WriteLE(a.Precision)
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bw.WriteLE(a.FeeMode)
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bw.WriteLE(a.FeeAddress)
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if bw.Err != nil {
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return bw.Err
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}
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if err := a.Owner.EncodeBinary(w); err != nil {
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return err
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}
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bw.WriteLE(a.Admin)
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bw.WriteLE(a.Issuer)
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bw.WriteLE(a.Expiration)
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bw.WriteLE(a.IsFrozen)
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return bw.Err
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}
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// GetName returns the asset name based on its type.
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func (a *AssetState) GetName() string {
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if a.AssetType == transaction.GoverningToken {
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return "NEO"
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} else if a.AssetType == transaction.UtilityToken {
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return "NEOGas"
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}
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return a.Name
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}
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