org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl.kt Maven / Gradle / Ivy

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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.descriptors.impl

import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.descriptors.ModuleDescriptor
import org.jetbrains.kotlin.descriptors.ModuleParameters
import org.jetbrains.kotlin.descriptors.PackageFragmentProvider
import org.jetbrains.kotlin.descriptors.PackageViewDescriptor
import org.jetbrains.kotlin.descriptors.annotations.Annotations
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.storage.StorageManager
import org.jetbrains.kotlin.utils.sure
import java.util.LinkedHashSet

public class ModuleDescriptorImpl(
        moduleName: Name,
        private val storageManager: StorageManager,
        private val moduleParameters: ModuleParameters,
        override val builtIns: KotlinBuiltIns
) : DeclarationDescriptorImpl(Annotations.EMPTY, moduleName), ModuleDescriptor, ModuleParameters by moduleParameters {
    init {
        if (!moduleName.isSpecial()) {
            throw IllegalArgumentException("Module name must be special: $moduleName")
        }
    }

    public constructor(
            moduleName: Name,
            storageManager: StorageManager,
            moduleParameters: ModuleParameters
    ) : this(moduleName, storageManager, moduleParameters, KotlinBuiltIns.getInstance())

    private var dependencies: ModuleDependencies? = null
    private var packageFragmentProviderForModuleContent: PackageFragmentProvider? = null

    override fun getPackage(fqName: FqName): PackageViewDescriptor = LazyPackageViewDescriptorImpl(this, fqName, storageManager)

    override fun getSubPackagesOf(fqName: FqName, nameFilter: (Name) -> Boolean): Collection {
        return packageFragmentProvider.getSubPackagesOf(fqName, nameFilter)
    }

    private val packageFragmentProviderForWholeModuleWithDependencies by lazy {
        val moduleDependencies = dependencies.sure { "Dependencies of module $id were not set before querying module content" }
        val dependenciesDescriptors = moduleDependencies.descriptors
        assert(this in dependenciesDescriptors) { "Module ${id} is not contained in his own dependencies, this is probably a misconfiguration" }
        dependenciesDescriptors.forEach {
            dependency ->
            assert(dependency.isInitialized) {
                "Dependency module ${dependency.id} was not initialized by the time contents of dependent module ${this.id} were queried"
            }
        }
        CompositePackageFragmentProvider(dependenciesDescriptors.map {
            it.packageFragmentProviderForModuleContent!!
        })
    }

    private val isInitialized: Boolean
        get() = packageFragmentProviderForModuleContent != null

    public fun setDependencies(dependencies: ModuleDependencies) {
        assert(this.dependencies == null) { "Dependencies of $id were already set" }
        this.dependencies = dependencies
    }

    public fun setDependencies(vararg descriptors: ModuleDescriptorImpl) {
        setDependencies(descriptors.toList())
    }

    public fun setDependencies(descriptors: List) {
        setDependencies(ModuleDependenciesImpl(descriptors))
    }

    private val id: String
        get() = getName().toString()

    /*
     * Call initialize() to set module contents. Uninitialized module cannot be queried for its contents.
     */
    public fun initialize(providerForModuleContent: PackageFragmentProvider) {
        assert(!isInitialized) { "Attempt to initialize module $id twice" }
        this.packageFragmentProviderForModuleContent = providerForModuleContent
    }

    val packageFragmentProvider: PackageFragmentProvider
        get() = packageFragmentProviderForWholeModuleWithDependencies

    private val friendModules = LinkedHashSet()

    override fun isFriend(other: ModuleDescriptor) = other == this || other in friendModules

    public fun addFriend(friend: ModuleDescriptorImpl): Unit {
        assert(friend != this) { "Attempt to make module $id a friend to itself" }
        friendModules.add(friend)
    }
}

public interface ModuleDependencies {
    public val descriptors: List
}

public class ModuleDependenciesImpl(override val descriptors: List) : ModuleDependencies

public class LazyModuleDependencies(
        storageManager: StorageManager,
        computeDependencies: () -> List
) : ModuleDependencies {
    private val dependencies = storageManager.createLazyValue(computeDependencies)

    override val descriptors: List
        get() = dependencies()
}