forgejo-federation/vendor/github.com/pingcap/tidb/kv/version.go
Thomas Boerger b6a95a8cb3 Integrate public as bindata optionally (#293)
* Dropped unused codekit config

* Integrated dynamic and static bindata for public

* Ignore public bindata

* Add a general generate make task

* Integrated flexible public assets into web command

* Updated vendoring, added all missiong govendor deps

* Made the linter happy with the bindata and dynamic code

* Moved public bindata definition to modules directory

* Ignoring the new bindata path now

* Updated to the new public modules import path

* Updated public bindata command and drop the new prefix
2016-11-30 00:26:36 +08:00

51 lines
1.3 KiB
Go

// Copyright 2015 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package kv
import "math"
// VersionProvider provides increasing IDs.
type VersionProvider interface {
CurrentVersion() (Version, error)
}
// Version is the wrapper of KV's version.
type Version struct {
Ver uint64
}
var (
// MaxVersion is the maximum version, notice that it's not a valid version.
MaxVersion = Version{Ver: math.MaxUint64}
// MinVersion is the minimum version, it's not a valid version, too.
MinVersion = Version{Ver: 0}
)
// NewVersion creates a new Version struct.
func NewVersion(v uint64) Version {
return Version{
Ver: v,
}
}
// Cmp returns the comparison result of two versions.
// The result will be 0 if a==b, -1 if a < b, and +1 if a > b.
func (v Version) Cmp(another Version) int {
if v.Ver > another.Ver {
return 1
} else if v.Ver < another.Ver {
return -1
}
return 0
}