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package org.jetbrains.dokka.base.resolvers.external
import org.jetbrains.dokka.links.DRI
import java.util.concurrent.ConcurrentHashMap
interface ExternalLocationProvider {
val param: String
fun DRI.toLocation(): String
}
interface ExternalLocationProviderFactory {
fun getExternalLocationProvider(param: String): ExternalLocationProvider?
}
class ExternalLocationProviderFactoryWithCache(val ext: ExternalLocationProviderFactory) : ExternalLocationProviderFactory {
private val locationProviders = ConcurrentHashMap<String, CacheWrapper>()
override fun getExternalLocationProvider(param: String): ExternalLocationProvider? =
locationProviders.getOrPut(param) { CacheWrapper(ext.getExternalLocationProvider(param)) }.provider
}
private class CacheWrapper(val provider: ExternalLocationProvider?)
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