forked from TrueCloudLab/neoneo-go
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package core
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import (
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// A HeaderHashList represents a list of header hashes.
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// This data structure in not routine safe and should be
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// used under some kind of protection against race conditions.
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type HeaderHashList struct {
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hashes []util.Uint256
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}
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// NewHeaderHashList returns a new pointer to a HeaderHashList.
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func NewHeaderHashList(hashes ...util.Uint256) *HeaderHashList {
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return &HeaderHashList{
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hashes: hashes,
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}
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}
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// Add appends the given hash to the list of hashes.
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func (l *HeaderHashList) Add(h ...util.Uint256) {
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l.hashes = append(l.hashes, h...)
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}
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// Len returns the length of the underlying hashes slice.
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func (l *HeaderHashList) Len() int {
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return len(l.hashes)
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}
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// Get returns the hash by the given index.
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func (l *HeaderHashList) Get(i int) util.Uint256 {
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if l.Len() <= i {
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return util.Uint256{}
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}
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return l.hashes[i]
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}
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// Last return the last hash in the HeaderHashList.
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func (l *HeaderHashList) Last() util.Uint256 {
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return l.hashes[l.Len()-1]
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}
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// WriteTo writes n underlying hashes to the given BinWriter
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// starting from start.
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func (l *HeaderHashList) Write(bw *io.BinWriter, start, n int) error {
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bw.WriteArray(l.hashes[start : start+n])
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return bw.Err
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}
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