44 lines
858 B
Go
44 lines
858 B
Go
package merkletrie
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import (
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"github.com/lbryio/lbcd/chaincfg/chainhash"
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)
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type vertex struct {
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merkleHash *chainhash.Hash
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claimsHash *chainhash.Hash
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childLinks map[byte]*vertex
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}
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func newVertex(hash *chainhash.Hash) *vertex {
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return &vertex{childLinks: map[byte]*vertex{}, merkleHash: hash}
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}
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// TODO: more professional to use msgpack here?
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// nbuf decodes the on-disk format of a node, which has the following form:
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//
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// ch(1B) hash(32B)
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// ...
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// ch(1B) hash(32B)
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// vhash(32B)
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type nbuf []byte
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func (nb nbuf) entries() int {
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return len(nb) / 33
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}
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func (nb nbuf) entry(i int) (byte, *chainhash.Hash) {
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h := chainhash.Hash{}
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copy(h[:], nb[33*i+1:])
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return nb[33*i], &h
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}
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func (nb nbuf) hasValue() (bool, *chainhash.Hash) {
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if len(nb)%33 == 0 {
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return false, nil
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}
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h := chainhash.Hash{}
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copy(h[:], nb[len(nb)-32:])
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return true, &h
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}
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