org.jetbrains.kotlin.extensions.PreprocessedVirtualFileFactoryExtension.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2017 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.extensions
import com.intellij.openapi.project.Project
import com.intellij.openapi.vfs.VirtualFile
import com.intellij.testFramework.LightVirtualFile
import org.jetbrains.kotlin.utils.addToStdlib.firstNotNullResult
/**
* The interface for the extensions that are used to substitute VirtualFile on the creation of KtFile, allows to preprocess a file before
* lexing and parsing
*/
interface PreprocessedVirtualFileFactoryExtension {
companion object : ProjectExtensionDescriptor(
"org.jetbrains.kotlin.preprocessedVirtualFileFactoryExtension",
PreprocessedVirtualFileFactoryExtension::class.java
)
fun isPassThrough(): Boolean
fun createPreprocessedFile(file: VirtualFile?): VirtualFile?
fun createPreprocessedLightFile(file: LightVirtualFile?): LightVirtualFile?
}
class PreprocessedFileCreator(val project: Project) {
private val validExts: Array by lazy {
PreprocessedVirtualFileFactoryExtension.getInstances(project).filterNot { it.isPassThrough() }.toTypedArray()
}
fun create(file: VirtualFile): VirtualFile = validExts.firstNotNullResult { it.createPreprocessedFile(file) } ?: file
// unused now, but could be used in the IDE at some point
fun createLight(file: LightVirtualFile): LightVirtualFile =
validExts.firstNotNullResult { it.createPreprocessedLightFile(file) } ?: file
}