org.jetbrains.kotlin.cli.jvm.compiler.CliVirtualFileFinder.kt Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of kotlin-compiler Show documentation
Kotlin Compiler
There is a newer version: 2.0.0
/*
 * 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.cli.jvm.compiler

import com.intellij.openapi.vfs.VirtualFile
import com.intellij.psi.search.GlobalSearchScope
import org.jetbrains.kotlin.cli.jvm.index.JavaRoot
import org.jetbrains.kotlin.cli.jvm.index.JvmDependenciesIndex
import org.jetbrains.kotlin.load.kotlin.VirtualFileFinder
import org.jetbrains.kotlin.name.ClassId
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.serialization.deserialization.MetadataPackageFragment
import org.jetbrains.kotlin.serialization.deserialization.builtins.BuiltInSerializerProtocol
import java.io.InputStream

class CliVirtualFileFinder(
    private val index: JvmDependenciesIndex,
    private val scope: GlobalSearchScope
) : VirtualFileFinder() {
    override fun findVirtualFileWithHeader(classId: ClassId): VirtualFile? =
        findBinaryClass(classId, classId.relativeClassName.asString().replace('.', '$') + ".class")

    override fun findMetadata(classId: ClassId): InputStream? {
        assert(!classId.isNestedClass) { "Nested classes are not supported here: $classId" }

        return findBinaryClass(
            classId,
            classId.shortClassName.asString() + MetadataPackageFragment.DOT_METADATA_FILE_EXTENSION
        )?.inputStream
    }

    override fun hasMetadataPackage(fqName: FqName): Boolean {
        var found = false
        index.traverseDirectoriesInPackage(fqName, continueSearch = { dir, _ ->
            found = found or dir.children.any { it.extension == MetadataPackageFragment.METADATA_FILE_EXTENSION }
            !found
        })
        return found
    }

    override fun findBuiltInsData(packageFqName: FqName): InputStream? {
        // "" is just a made-up name
        // JvmDependenciesIndex requires the ClassId of the class which we're searching for, to cache the last request+result
        val classId = ClassId(packageFqName, Name.special(""))

        return findBinaryClass(classId, BuiltInSerializerProtocol.getBuiltInsFileName(packageFqName))?.inputStream
    }

    private fun findBinaryClass(classId: ClassId, fileName: String): VirtualFile? =
        index.findClass(classId, acceptedRootTypes = JavaRoot.OnlyBinary) { dir, _ ->
            dir.findChild(fileName)?.takeIf(VirtualFile::isValid)
        }?.takeIf { it in scope }
}