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004a68e524
Add a new OutPoint type that wraps wire.OutPoint and provides TLV encoding/decoding capabilities through the tlv.RecordProducer interface. This enables OutPoint to be used in TLV streams of messages.
54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package lnwire
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import (
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"bytes"
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"io"
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"github.com/btcsuite/btcd/wire"
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"github.com/lightningnetwork/lnd/tlv"
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)
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// OutPoint describes an outpoint of a transaction via its transaction hash
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// and the outpoint index. This is a thin wrapper around the wire.OutPoint to
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// provide TLV encoding/decoding.
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type OutPoint wire.OutPoint
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// Record returns a TLV record that can be used to encode/decode the OutPoint.
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//
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// NOTE: this is part of the tlv.RecordProducer interface.
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func (o *OutPoint) Record() tlv.Record {
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return tlv.MakeStaticRecord(0, o, 34, outpointEncoder, outpointDecoder)
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}
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// outpointEncoder is a TLV encoder for OutPoint.
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func outpointEncoder(w io.Writer, val any, _ *[8]byte) error {
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if v, ok := val.(*OutPoint); ok {
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buf := bytes.NewBuffer(nil)
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err := WriteOutPoint(buf, wire.OutPoint(*v))
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if err != nil {
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return err
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}
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_, err = w.Write(buf.Bytes())
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return err
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}
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return tlv.NewTypeForEncodingErr(val, "OutPoint")
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}
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// outpointDecoder is a TLV decoder for OutPoint.
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func outpointDecoder(r io.Reader, val any, _ *[8]byte, l uint64) error {
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if v, ok := val.(*OutPoint); ok {
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var o wire.OutPoint
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if err := ReadElement(r, &o); err != nil {
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return err
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}
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*v = OutPoint(o)
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return nil
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}
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return tlv.NewTypeForDecodingErr(val, "OutPoint", l, 34)
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}
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