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Diffstat (limited to 'vendor/github.com/dexon-foundation/dexon-consensus/common/types.go')
-rw-r--r-- | vendor/github.com/dexon-foundation/dexon-consensus/common/types.go | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/common/types.go b/vendor/github.com/dexon-foundation/dexon-consensus/common/types.go new file mode 100644 index 000000000..a5dfab10e --- /dev/null +++ b/vendor/github.com/dexon-foundation/dexon-consensus/common/types.go @@ -0,0 +1,107 @@ +// Copyright 2018 The dexon-consensus Authors +// This file is part of the dexon-consensus library. +// +// The dexon-consensus 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 dexon-consensus 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 dexon-consensus library. If not, see +// <http://www.gnu.org/licenses/>. + +// Copyright 2018 The dexon-consensus Authors +// This file is part of the dexon-consensus library. +// +// The dexon-consensus 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 dexon-consensus 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 dexon-consensus library. If not, see +// <http://www.gnu.org/licenses/>. + +package common + +import ( + "bytes" + "encoding/hex" + "sort" + "time" +) + +const ( + // HashLength is the length of a hash in DEXON. + HashLength = 32 +) + +// Hash is the basic hash type in DEXON. +type Hash [HashLength]byte + +func (h Hash) String() string { + return hex.EncodeToString([]byte(h[:])) +} + +// Bytes return the hash as slice of bytes. +func (h Hash) Bytes() []byte { + return h[:] +} + +// Equal compares if two hashes are the same. +func (h Hash) Equal(hp Hash) bool { + return h == hp +} + +// Less compares if current hash is lesser. +func (h Hash) Less(hp Hash) bool { + return bytes.Compare(h[:], hp[:]) < 0 +} + +// MarshalText implements the encoding.TextMarhsaler interface. +func (h Hash) MarshalText() ([]byte, error) { + result := make([]byte, hex.EncodedLen(HashLength)) + hex.Encode(result, h[:]) + return result, nil +} + +// UnmarshalText implements the encoding.TextUnmarshaler interface. +func (h *Hash) UnmarshalText(text []byte) error { + _, err := hex.Decode(h[:], text) + return err +} + +// Hashes is for sorting hashes. +type Hashes []Hash + +func (hs Hashes) Len() int { return len(hs) } +func (hs Hashes) Less(i, j int) bool { return hs[i].Less(hs[j]) } +func (hs Hashes) Swap(i, j int) { hs[i], hs[j] = hs[j], hs[i] } + +// SortedHashes is a slice of hashes sorted in ascending order. +type SortedHashes Hashes + +// NewSortedHashes converts a slice of hashes to a sorted one. It's a +// firewall to prevent us from assigning unsorted hashes to a variable +// declared as SortedHashes directly. +func NewSortedHashes(hs Hashes) SortedHashes { + sort.Sort(hs) + return SortedHashes(hs) +} + +// ByTime implements sort.Interface for time.Time. +type ByTime []time.Time + +func (t ByTime) Len() int { return len(t) } +func (t ByTime) Swap(i, j int) { t[i], t[j] = t[j], t[i] } +func (t ByTime) Less(i, j int) bool { return t[i].Before(t[j]) } |