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vimr/VimR/Scorer.swift
2016-09-25 17:50:33 +02:00

34 lines
762 B
Swift

/**
* Tae Won Ha - http://taewon.de - @hataewon
* See LICENSE
*/
import Foundation
class Scorer {
static func score(_ target: String, pattern: String) -> Int {
let wf = Matcher.wagnerFisherDistance(target, pattern: pattern)
let fuzzy = Matcher.fuzzyIgnoringCase(target, pattern: pattern)
let upper = Matcher.numberOfUppercaseMatches(target, pattern: pattern)
let exactMatch = Matcher.exactMatchIgnoringCase(target, pattern: pattern)
let exactScore: Int
switch exactMatch {
case .none:
exactScore = 0
case .exact:
return 100
case .prefix, .contains, .suffix:
exactScore = 5
}
let wfScore = 0 - (wf / 10)
return exactScore
+ wfScore
+ fuzzy.matches
+ 2 * upper
}
}