Spintax parser

Spintax.kt

import java.util.*

fun main(args: Array<String>) {
    (1..10).forEach { println(spin("my {little|big} pony")) }
}

fun spin(value: String): String {
    var result: String = value
    val random: Random = Random()
    val regex: Regex = Regex("\\{[^{}]*}")
    var matchResult: MatchResult? = regex.find(result)
    while (matchResult != null) {
        val segment: String = result.substring(matchResult.range.first + 1, matchResult.range.last)
        val choices: List<String> = segment.split('|')
        result = result.substring(0, matchResult.range.start) + choices[random.nextInt(choices.size)] + result.substring(matchResult.range.last + 1)
        matchResult = regex.find(result)
    }
    return result
}