/
delta_score.go
72 lines (57 loc) 路 1.04 KB
/
delta_score.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Popeye
package report
import "github.com/derailed/popeye/internal/rules"
const (
noChange = "not changed"
better = "improved"
worst = "worsened"
)
// DeltaScore tracks delta between 2 tally scores.
type DeltaScore struct {
level rules.Level
s1, s2 int
inverse bool
}
// NewDeltaScore returns a new delta score.
func NewDeltaScore(level rules.Level, s1, s2 int, inverse bool) DeltaScore {
return DeltaScore{
s1: s1,
s2: s2,
level: level,
inverse: inverse,
}
}
func (s DeltaScore) changed() bool {
return s.s1 != s.s2
}
func (s DeltaScore) worst() bool {
if s.s1 == s.s2 {
return false
}
return !s.better()
}
func (s DeltaScore) better() bool {
if s.s1 == s.s2 {
return false
}
if s.s2 > s.s1 {
return !s.inverse
}
return s.inverse
}
func (s DeltaScore) summarize() string {
if s.s1 == s.s2 {
return noChange
}
if s.s1 > s.s2 {
if s.inverse {
return better
}
return worst
}
if s.inverse {
return worst
}
return better
}