org.jetbrains.kotlin.incremental.snapshots.FileSnapshotMap.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 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.incremental.snapshots
import org.jetbrains.kotlin.incremental.ChangedFiles
import org.jetbrains.kotlin.incremental.storage.BasicStringMap
import org.jetbrains.kotlin.incremental.storage.FileToPathConverter
import org.jetbrains.kotlin.incremental.storage.PathStringDescriptor
import java.io.File
import java.util.*
class FileSnapshotMap(
storageFile: File,
private val pathConverter: FileToPathConverter
) : BasicStringMap(storageFile, PathStringDescriptor, FileSnapshotExternalizer) {
override fun dumpValue(value: FileSnapshot): String =
value.toString()
@Synchronized
fun compareAndUpdate(newFiles: Iterable): ChangedFiles.Known {
val snapshotProvider = SimpleFileSnapshotProviderImpl()
val newOrModified = ArrayList()
val removed = ArrayList()
val newPaths = newFiles.mapTo(HashSet(), transform = pathConverter::toPath)
for (oldPath in storage.keys) {
if (oldPath !in newPaths) {
storage.remove(oldPath)
removed.add(pathConverter.toFile(oldPath))
}
}
for (path in newPaths) {
val file = pathConverter.toFile(path)
val oldSnapshot = storage[path]
val newSnapshot = snapshotProvider[file]
if (oldSnapshot == null || oldSnapshot != newSnapshot) {
newOrModified.add(file)
storage[path] = newSnapshot
}
}
return ChangedFiles.Known(newOrModified, removed)
}
}