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/*
* 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.incremental
import org.jetbrains.annotations.TestOnly
import org.jetbrains.kotlin.config.IncrementalCompilation
import org.jetbrains.kotlin.load.java.JvmBytecodeBinaryVersion
import org.jetbrains.kotlin.load.kotlin.JvmMetadataVersion
import java.io.File
import java.io.IOException
private val NORMAL_VERSION = 8
private val EXPERIMENTAL_VERSION = 4
private val DATA_CONTAINER_VERSION = 2
private val NORMAL_VERSION_FILE_NAME = "format-version.txt"
private val EXPERIMENTAL_VERSION_FILE_NAME = "experimental-format-version.txt"
private val DATA_CONTAINER_VERSION_FILE_NAME = "data-container-format-version.txt"
class CacheVersion(
private val ownVersion: Int,
private val versionFile: File,
private val whenVersionChanged: CacheVersion.Action,
private val whenTurnedOn: CacheVersion.Action,
private val whenTurnedOff: CacheVersion.Action,
isEnabled: ()->Boolean
) {
private val isEnabled by lazy(isEnabled)
private val actualVersion: Int?
get() = try {
versionFile.readText().toInt()
}
catch (e: NumberFormatException) {
null
}
catch (e: IOException) {
null
}
private val expectedVersion: Int
get() {
val metadata = JvmMetadataVersion.INSTANCE
val bytecode = JvmBytecodeBinaryVersion.INSTANCE
return ownVersion * 1000000 +
bytecode.major * 10000 + bytecode.minor * 100 +
metadata.major * 1000 + metadata.minor
}
fun checkVersion(): Action =
when (versionFile.exists() to isEnabled) {
true to true -> if (actualVersion != expectedVersion) whenVersionChanged else Action.DO_NOTHING
false to true -> whenTurnedOn
true to false -> whenTurnedOff
else -> Action.DO_NOTHING
}
fun saveIfNeeded() {
if (!isEnabled) return
if (!versionFile.parentFile.exists()) {
versionFile.parentFile.mkdirs()
}
versionFile.writeText(expectedVersion.toString())
}
fun clean() {
versionFile.delete()
}
@get:TestOnly
val formatVersionFile: File
get() = versionFile
// Order of entries is important, because actions are sorted in KotlinBuilder::checkVersions
enum class Action {
REBUILD_ALL_KOTLIN,
REBUILD_CHUNK,
CLEAN_NORMAL_CACHES,
CLEAN_EXPERIMENTAL_CACHES,
CLEAN_DATA_CONTAINER,
DO_NOTHING
}
}
fun normalCacheVersion(dataRoot: File): CacheVersion =
CacheVersion(ownVersion = NORMAL_VERSION,
versionFile = File(dataRoot, NORMAL_VERSION_FILE_NAME),
whenVersionChanged = CacheVersion.Action.REBUILD_CHUNK,
whenTurnedOn = CacheVersion.Action.REBUILD_CHUNK,
whenTurnedOff = CacheVersion.Action.CLEAN_NORMAL_CACHES,
isEnabled = { IncrementalCompilation.isEnabled() })
fun experimentalCacheVersion(dataRoot: File): CacheVersion =
CacheVersion(ownVersion = EXPERIMENTAL_VERSION,
versionFile = File(dataRoot, EXPERIMENTAL_VERSION_FILE_NAME),
whenVersionChanged = CacheVersion.Action.REBUILD_CHUNK,
whenTurnedOn = CacheVersion.Action.REBUILD_CHUNK,
whenTurnedOff = CacheVersion.Action.CLEAN_EXPERIMENTAL_CACHES,
isEnabled = { IncrementalCompilation.isExperimental() })
fun dataContainerCacheVersion(dataRoot: File): CacheVersion =
CacheVersion(ownVersion = DATA_CONTAINER_VERSION,
versionFile = File(dataRoot, DATA_CONTAINER_VERSION_FILE_NAME),
whenVersionChanged = CacheVersion.Action.REBUILD_ALL_KOTLIN,
whenTurnedOn = CacheVersion.Action.REBUILD_ALL_KOTLIN,
whenTurnedOff = CacheVersion.Action.CLEAN_DATA_CONTAINER,
isEnabled = { IncrementalCompilation.isExperimental() })
