mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
synced 2024-11-14 04:05:17 +00:00
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
// Copyright 2020 The LevelDB-Go and Pebble Authors. All rights reserved. Use
|
|
// of this source code is governed by a BSD-style license that can be found in
|
|
// the LICENSE file.
|
|
|
|
package manifest
|
|
|
|
import "fmt"
|
|
|
|
const (
|
|
// 3 bits are necessary to represent level values from 0-6.
|
|
levelBits = 3
|
|
levelMask = (1 << levelBits) - 1
|
|
// invalidSublevel denotes an invalid or non-applicable sublevel.
|
|
invalidSublevel = -1
|
|
)
|
|
|
|
// Level encodes a level and optional sublevel for use in log and error
|
|
// messages. The encoding has the property that Level(0) ==
|
|
// L0Sublevel(invalidSublevel).
|
|
type Level uint32
|
|
|
|
func makeLevel(level, sublevel int) Level {
|
|
return Level(((sublevel + 1) << levelBits) | level)
|
|
}
|
|
|
|
// LevelToInt returns the int representation of a Level
|
|
func LevelToInt(l Level) int {
|
|
return int(l) & levelMask
|
|
}
|
|
|
|
// L0Sublevel returns a Level representing the specified L0 sublevel.
|
|
func L0Sublevel(sublevel int) Level {
|
|
if sublevel < 0 {
|
|
panic(fmt.Sprintf("invalid L0 sublevel: %d", sublevel))
|
|
}
|
|
return makeLevel(0, sublevel)
|
|
}
|
|
|
|
func (l Level) String() string {
|
|
level := int(l) & levelMask
|
|
sublevel := (int(l) >> levelBits) - 1
|
|
if sublevel != invalidSublevel {
|
|
return fmt.Sprintf("L%d.%d", level, sublevel)
|
|
}
|
|
return fmt.Sprintf("L%d", level)
|
|
}
|