org.jetbrains.kotlin.container.Registry.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.container
import com.intellij.util.containers.MultiMap
import java.lang.reflect.Type
internal class ComponentRegistry {
fun buildRegistrationMap(descriptors: Collection): MultiMap {
val registrationMap = MultiMap()
for (descriptor in descriptors) {
for (registration in descriptor.getRegistrations()) {
registrationMap.putValue(registration, descriptor)
}
}
return registrationMap
}
private val registrationMap = hashMapOf()
fun addAll(descriptors: Collection) {
val newRegistrationMap = buildRegistrationMap(descriptors)
for (entry in newRegistrationMap.entrySet()) {
val oldEntries = registrationMap[entry.key]
if (oldEntries != null || entry.value.size > 1) {
val list = mutableListOf()
if (oldEntries is Collection<*>) {
@Suppress("UNCHECKED_CAST")
list.addAll(oldEntries as Collection)
}
else if (oldEntries != null) {
list.add(oldEntries as ComponentDescriptor)
}
list.addAll(entry.value)
registrationMap[entry.key] = list.singleOrNull() ?: list
}
else {
registrationMap[entry.key] = entry.value.single()
}
}
}
fun tryGetEntry(request: Type): Collection {
val value = registrationMap[request]
@Suppress("UNCHECKED_CAST")
return when(value) {
is Collection<*> -> value as Collection
null -> emptyList()
else -> listOf(value as ComponentDescriptor)
}
}
fun addAll(other: ComponentRegistry) {
if (!registrationMap.isEmpty()) {
throw IllegalStateException("Can only copy entries from another component registry into an empty component registry")
}
registrationMap += other.registrationMap
}
}