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author | Ted Yin <[email protected]> | 2020-09-18 13:14:29 -0400 |
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committer | GitHub <[email protected]> | 2020-09-18 13:14:29 -0400 |
commit | d048937c48753d9eaef771bf71820cf95d79df26 (patch) | |
tree | 1a7f65fcd72e77092525ab01625b8b9d365e3e40 /core/state/snapshot/sort.go | |
parent | 7d1388c743b4ec8f4a86bea95bfada785dee83f7 (diff) | |
parent | 7d8c85cf8895b0f998d8eafb02f99d5b689fcd59 (diff) |
Merge pull request #34 from ava-labs/devv0.3.0-rc.5
Dev
Diffstat (limited to 'core/state/snapshot/sort.go')
-rw-r--r-- | core/state/snapshot/sort.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/core/state/snapshot/sort.go b/core/state/snapshot/sort.go new file mode 100644 index 0000000..8884123 --- /dev/null +++ b/core/state/snapshot/sort.go @@ -0,0 +1,36 @@ +// Copyright 2019 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +package snapshot + +import ( + "bytes" + + "github.com/ethereum/go-ethereum/common" +) + +// hashes is a helper to implement sort.Interface. +type hashes []common.Hash + +// Len is the number of elements in the collection. +func (hs hashes) Len() int { return len(hs) } + +// Less reports whether the element with index i should sort before the element +// with index j. +func (hs hashes) Less(i, j int) bool { return bytes.Compare(hs[i][:], hs[j][:]) < 0 } + +// Swap swaps the elements with indexes i and j. +func (hs hashes) Swap(i, j int) { hs[i], hs[j] = hs[j], hs[i] } |