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whisper: fix comment for rlpenv

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This commit is contained in:
Felix Lange 2015-04-14 12:05:36 +02:00
parent eedbb1ee9a
commit 509d0a8d78
1 changed files with 5 additions and 4 deletions
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9
whisper/envelope.go
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@ -109,16 +109,17 @@ func (self *Envelope) Hash() common.Hash {
return self.hash
}
// rlpenv is an Envelope but is not an rlp.Decoder.
// It is used for decoding because we need to
type rlpenv Envelope
// DecodeRLP decodes an Envelope from an RLP data stream.
func (self *Envelope) DecodeRLP(s *rlp.Stream) error {
raw, err := s.Raw()
if err != nil {
return err
}
// The decoding of Envelope uses the struct fields but also needs
// to compute the hash of the whole RLP-encoded envelope. This
// type has the same structure as Envelope but is not an
// rlp.Decoder so we can reuse the Envelope struct definition.
type rlpenv Envelope
if err := rlp.DecodeBytes(raw, (*rlpenv)(self)); err != nil {
return err
}