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