Drop package facades:

- getting rid of package facades in InlineCodegen & related stuff.
Provide binary source element to top-level package members.

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegen.java

@@ -769,9 +769,9 @@ public class InlineCodegen extends CallGenerator {
         if (incrementalCompilationComponents == null || targetId == null) return;
 
         IncrementalCache incrementalCache = incrementalCompilationComponents.getIncrementalCache(targetId);
-        String sourceFile = InlineCodegenUtilsKt.getClassFilePath(sourceDescriptor, incrementalCache);
-        String targetFile = InlineCodegenUtilsKt.getSourceFilePath(targetDescriptor);
-        incrementalCache.registerInline(sourceFile, jvmSignature.toString(), targetFile);
+        String classFilePath = InlineCodegenUtilsKt.getClassFilePath(sourceDescriptor, typeMapper, incrementalCache);
+        String sourceFilePath = InlineCodegenUtilsKt.getSourceFilePath(targetDescriptor);
+        incrementalCache.registerInline(classFilePath, jvmSignature.toString(), sourceFilePath);
     }
 
     @Override

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegenUtil.java

@@ -164,26 +164,6 @@ public class InlineCodegenUtil {
         return fileFinder.findVirtualFileWithHeader(new ClassId(packageFqName, Name.identifier(classNameWithDollars)));
     }
 
-    //TODO: navigate to inner classes
-    @Nullable
-    public static ClassId getContainerClassId(@NotNull DeclarationDescriptor referencedDescriptor) {
-        ClassOrPackageFragmentDescriptor
-                containerDescriptor = DescriptorUtils.getParentOfType(referencedDescriptor, ClassOrPackageFragmentDescriptor.class, false);
-        if (containerDescriptor instanceof PackageFragmentDescriptor) {
-            return PackageClassUtils.getPackageClassId(getFqName(containerDescriptor).toSafe());
-        }
-        if (containerDescriptor instanceof ClassDescriptor) {
-            ClassId classId = DescriptorUtilsKt.getClassId((ClassDescriptor) containerDescriptor);
-            if (isInterface(containerDescriptor)) {
-                FqName relativeClassName = classId.getRelativeClassName();
-                //TODO test nested trait fun inlining
-                classId = new ClassId(classId.getPackageFqName(), Name.identifier(relativeClassName.shortName().asString() + JvmAbi.DEFAULT_IMPLS_SUFFIX));
-            }
-            return classId;
-        }
-        return null;
-    }
-
     public static String getInlineName(
             @NotNull CodegenContext codegenContext,
             @NotNull JetTypeMapper typeMapper,

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils.kt

@@ -16,13 +16,15 @@
 
 package org.jetbrains.kotlin.codegen.inline
 
+import org.jetbrains.kotlin.codegen.state.JetTypeMapper
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptorWithSource
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryPackageSourceElement
 import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinarySourceElement
 import org.jetbrains.kotlin.load.kotlin.VirtualFileKotlinClass
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCache
-import org.jetbrains.kotlin.resolve.jvm.JvmClassName
 import org.jetbrains.kotlin.resolve.source.PsiSourceElement
+import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedCallableMemberDescriptor
 import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedSimpleFunctionDescriptor
 
 public val FunctionDescriptor.sourceFilePath: String
@@ -32,19 +34,30 @@ public val FunctionDescriptor.sourceFilePath: String
         return containingFile?.virtualFile?.canonicalPath!!
     }
 
-public fun FunctionDescriptor.getClassFilePath(cache: IncrementalCache): String {
+public fun FunctionDescriptor.getClassFilePath(typeMapper: JetTypeMapper, cache: IncrementalCache): String {
     val container = containingDeclaration as? DeclarationDescriptorWithSource
     val source = container?.source
 
     return when (source) {
+        is KotlinJvmBinaryPackageSourceElement -> {
+            if (this !is DeserializedCallableMemberDescriptor) {
+                throw AssertionError("Expected DeserializedCallableMemberDescriptor, got: $this")
+            }
+            val kotlinClass = source.getContainingBinaryClass(this) ?:
+                    throw AssertionError("Descriptor $this is not found, in: $source")
+            if (kotlinClass !is VirtualFileKotlinClass) {
+                throw AssertionError("Expected VirtualFileKotlinClass, got $kotlinClass")
+            }
+            kotlinClass.file.canonicalPath!!
+        }
         is KotlinJvmBinarySourceElement -> {
             assert(this is DeserializedSimpleFunctionDescriptor) { "Expected DeserializedSimpleFunctionDescriptor, got: $this" }
             val kotlinClass = source.binaryClass as VirtualFileKotlinClass
             kotlinClass.file.canonicalPath!!
         }
         else -> {
-            val classId = InlineCodegenUtil.getContainerClassId(this)!!
-            val className = JvmClassName.byClassId(classId).internalName
+            val implementationOwnerType = typeMapper.mapOwner(this)
+            val className = implementationOwnerType.internalName
             cache.getClassFilePath(className)
         }
     }

compiler/backend/src/org/jetbrains/kotlin/codegen/state/JetTypeMapper.java

@@ -30,7 +30,6 @@ import org.jetbrains.kotlin.codegen.*;
 import org.jetbrains.kotlin.codegen.binding.CodegenBinding;
 import org.jetbrains.kotlin.codegen.binding.MutableClosure;
 import org.jetbrains.kotlin.codegen.binding.PsiCodegenPredictor;
-import org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil;
 import org.jetbrains.kotlin.codegen.signature.BothSignatureWriter;
 import org.jetbrains.kotlin.descriptors.*;
 import org.jetbrains.kotlin.fileClasses.FileClasses;
@@ -43,6 +42,7 @@ import org.jetbrains.kotlin.load.java.BuiltinMethodsWithSpecialGenericSignature.
 import org.jetbrains.kotlin.load.java.descriptors.JavaCallableMemberDescriptor;
 import org.jetbrains.kotlin.load.java.descriptors.JavaClassDescriptor;
 import org.jetbrains.kotlin.load.java.lazy.descriptors.LazyJavaPackageScope;
+import org.jetbrains.kotlin.load.kotlin.PackageClassUtils;
 import org.jetbrains.kotlin.load.kotlin.incremental.IncrementalPackageFragmentProvider;
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCache;
 import org.jetbrains.kotlin.name.*;
@@ -241,8 +241,8 @@ public class JetTypeMapper {
         if (parentDeclaration instanceof PackageFragmentDescriptor) {
             containingClassesInfo = getPackageMemberContainingClassesInfo(deserializedDescriptor);
         } else {
-            containingClassesInfo = ContainingClassesInfo.forClassMemberOrNull(
-                    InlineCodegenUtil.getContainerClassId(deserializedDescriptor));
+            ClassId classId = getContainerClassIdForClassDescriptor((ClassDescriptor) parentDeclaration);
+            containingClassesInfo = ContainingClassesInfo.forClassMemberOrNull(classId);
         }
         if (containingClassesInfo == null) {
             throw new IllegalStateException("Couldn't find container for " + deserializedDescriptor.getName());
@@ -250,6 +250,16 @@ public class JetTypeMapper {
         return containingClassesInfo;
     }
 
+    private static ClassId getContainerClassIdForClassDescriptor(ClassDescriptor classDescriptor) {
+        ClassId classId = DescriptorUtilsKt.getClassId(classDescriptor);
+        if (isInterface(classDescriptor)) {
+            FqName relativeClassName = classId.getRelativeClassName();
+            //TODO test nested trait fun inlining
+            classId = new ClassId(classId.getPackageFqName(), Name.identifier(relativeClassName.shortName().asString() + JvmAbi.DEFAULT_IMPLS_SUFFIX));
+        }
+        return classId;
+    }
+
     @Nullable
     private String getPackageMemberOwnerInternalName(@NotNull DeserializedCallableMemberDescriptor descriptor) {
         DeclarationDescriptor containingDeclaration = descriptor.getContainingDeclaration();

compiler/frontend.java/src/org/jetbrains/kotlin/fileClasses/JvmFileClassUtil.kt

@@ -20,6 +20,7 @@ import com.google.protobuf.MessageLite
 import com.intellij.psi.util.CachedValueProvider
 import com.intellij.psi.util.CachedValuesManager
 import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
+import org.jetbrains.kotlin.load.java.descriptors.getImplClassName
 import org.jetbrains.kotlin.load.kotlin.PackageClassUtils
 import org.jetbrains.kotlin.load.kotlin.PackagePartClassUtils
 import org.jetbrains.kotlin.name.FqName
@@ -70,24 +71,11 @@ public object JvmFileClassUtil {
 
     @JvmStatic
     public fun getImplClassName(callable: DeserializedCallableMemberDescriptor): Name? =
-            getImplClassName(callable.proto, callable.nameResolver)
+            callable.getImplClassName()
 
     @JvmStatic
     public fun getImplClassName(proto: MessageLite, nameResolver: NameResolver): Name? =
-            when (proto) {
-                is ProtoBuf.Constructor ->
-                    null
-                is ProtoBuf.Function ->
-                    if (proto.hasExtension(JvmProtoBuf.methodImplClassName))
-                        proto.getExtension(JvmProtoBuf.methodImplClassName)
-                    else null
-                is ProtoBuf.Property ->
-                    if (proto.hasExtension(JvmProtoBuf.propertyImplClassName))
-                        proto.getExtension(JvmProtoBuf.propertyImplClassName)
-                    else null
-                else ->
-                    error("Unknown message: $proto")
-            }?.let { nameResolver.getName(it) }
+            getImplClassName(proto, nameResolver)
 
     @JvmStatic
     public fun getHiddenPartFqName(file: JetFile, jvmFileClassAnnotations: ParsedJmvFileClassAnnotations): FqName =

compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/moduleVisibilityUtils.kt

@@ -46,14 +46,21 @@ public fun isContainedByCompiledPartOfOurModule(descriptor: DeclarationDescripto
     if (outDirectory == null || packageFragment !is LazyJavaPackageFragment) return false
 
     val source = getSourceElement(descriptor)
-    if (source is KotlinJvmBinarySourceElement) {
-        val binaryClass = source.binaryClass
-        if (binaryClass is VirtualFileKotlinClass) {
-            val file = binaryClass.file
-            if (file.fileSystem.protocol == StandardFileSystems.FILE_PROTOCOL) {
-                val ioFile = VfsUtilCore.virtualToIoFile(file)
-                return ioFile.absolutePath.startsWith(outDirectory.absolutePath + File.separator);
-            }
+
+    val binaryClass = when (source) {
+        is KotlinJvmBinarySourceElement ->
+            source.binaryClass
+        is KotlinJvmBinaryPackageSourceElement ->
+            source.getRepresentativeBinaryClass()
+        else ->
+            null
+    }
+
+    if (binaryClass is VirtualFileKotlinClass) {
+        val file = binaryClass.file
+        if (file.fileSystem.protocol == StandardFileSystems.FILE_PROTOCOL) {
+            val ioFile = VfsUtilCore.virtualToIoFile(file)
+            return ioFile.absolutePath.startsWith(outDirectory.absolutePath + File.separator);
         }
     }
 

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/descriptors/util.kt

@@ -16,13 +16,19 @@
 
 package org.jetbrains.kotlin.load.java.descriptors
 
+import com.google.protobuf.MessageLite
 import org.jetbrains.kotlin.descriptors.CallableDescriptor
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.descriptors.impl.ValueParameterDescriptorImpl
 import org.jetbrains.kotlin.load.java.lazy.descriptors.LazyJavaStaticClassScope
+import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.descriptorUtil.getSuperClassNotAny
 import org.jetbrains.kotlin.resolve.descriptorUtil.module
+import org.jetbrains.kotlin.serialization.ProtoBuf
+import org.jetbrains.kotlin.serialization.deserialization.NameResolver
+import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedCallableMemberDescriptor
+import org.jetbrains.kotlin.serialization.jvm.JvmProtoBuf
 import org.jetbrains.kotlin.types.JetType
 
 fun copyValueParameters(
@@ -60,3 +66,22 @@ fun ClassDescriptor.getParentJavaStaticClassScope(): LazyJavaStaticClassScope? {
 
     return staticScope
 }
+
+fun DeserializedCallableMemberDescriptor.getImplClassName(): Name? =
+        getImplClassName(this.proto, this.nameResolver)
+
+fun getImplClassName(proto: MessageLite, nameResolver: NameResolver): Name? =
+        when (proto) {
+            is ProtoBuf.Constructor ->
+                null
+            is ProtoBuf.Function ->
+                if (proto.hasExtension(JvmProtoBuf.methodImplClassName))
+                    proto.getExtension(JvmProtoBuf.methodImplClassName)
+                else null
+            is ProtoBuf.Property ->
+                if (proto.hasExtension(JvmProtoBuf.propertyImplClassName))
+                    proto.getExtension(JvmProtoBuf.propertyImplClassName)
+                else null
+            else ->
+                error("Unknown message: $proto")
+        }?.let { nameResolver.getName(it) }

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/lazy/descriptors/LazyJavaPackageFragment.kt

@@ -21,6 +21,7 @@ import org.jetbrains.kotlin.descriptors.impl.PackageFragmentDescriptorImpl
 import org.jetbrains.kotlin.load.java.lazy.LazyJavaResolverContext
 import org.jetbrains.kotlin.load.java.structure.JavaClass
 import org.jetbrains.kotlin.load.java.structure.JavaPackage
+import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryPackageSourceElement
 import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinarySourceElement
 import org.jetbrains.kotlin.load.kotlin.PackageClassUtils
 import org.jetbrains.kotlin.name.ClassId
@@ -57,8 +58,6 @@ class LazyJavaPackageFragment(
     override fun toString() = "lazy java package fragment: $fqName"
 
     override fun getSource(): SourceElement {
-        // TODO source element for a bunch of Kotlin binary classes containing members of the same package
-        val representativeClass = kotlinBinaryClasses.firstOrNull() ?: return SourceElement.NO_SOURCE
-        return KotlinJvmBinarySourceElement(representativeClass)
+        return KotlinJvmBinaryPackageSourceElement(jPackage, kotlinBinaryClasses)
     }
 }

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/kotlin/KotlinJvmBinaryPackageSourceElement.kt

@@ -0,0 +1,49 @@
+/*
+ * 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.load.kotlin
+
+import org.jetbrains.kotlin.descriptors.SourceElement
+import org.jetbrains.kotlin.descriptors.SourceFile
+import org.jetbrains.kotlin.load.java.descriptors.getImplClassName
+import org.jetbrains.kotlin.load.java.structure.JavaPackage
+import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedCallableMemberDescriptor
+
+
+class KotlinJvmBinaryPackageSourceElement(
+        private val jPackage: JavaPackage,
+        kotlinBinaryClasses: List<KotlinJvmBinaryClass>
+) : SourceElement {
+    private val implClassNameToBinaryClass = run {
+        val result = hashMapOf<String, KotlinJvmBinaryClass>()
+        for (kotlinBinaryClass in kotlinBinaryClasses) {
+            result[kotlinBinaryClass.classId.shortClassName.asString()] = kotlinBinaryClass
+        }
+        result
+    }
+
+    override fun toString(): String = "Binary package ${jPackage.getFqName()}: ${implClassNameToBinaryClass.keys}"
+    override fun getContainingFile(): SourceFile = SourceFile.NO_SOURCE_FILE
+
+    public fun getRepresentativeBinaryClass(): KotlinJvmBinaryClass {
+        return implClassNameToBinaryClass.values.first()
+    }
+
+    public fun getContainingBinaryClass(descriptor: DeserializedCallableMemberDescriptor): KotlinJvmBinaryClass? {
+        val name = descriptor.getImplClassName() ?: return null
+        return implClassNameToBinaryClass[name.asString()]
+    }
+}

jps-plugin/src/org/jetbrains/kotlin/jps/incremental/IncrementalCacheImpl.kt

@@ -520,21 +520,6 @@ public class IncrementalCacheImpl(
                 value.dumpMap { java.lang.Long.toHexString(it) }
     }
 
-    private inner class PackagePartMap(storageFile: File) : BasicStringMap<Boolean>(storageFile, BooleanDataDescriptor.INSTANCE) {
-        public fun addPackagePart(className: JvmClassName) {
-            storage[className.internalName] = true
-        }
-
-        public fun remove(className: JvmClassName) {
-            storage.remove(className.internalName)
-        }
-
-        public fun isPackagePart(className: JvmClassName): Boolean =
-                className.internalName in storage
-
-        override fun dumpValue(value: Boolean) = ""
-    }
-
     private inner class MultifileClassFacadeMap(storageFile: File) : BasicStringMap<List<String>>(storageFile, StringListExternalizer) {
         public fun add(facadeName: JvmClassName, partNames: List<String>) {
             storage[facadeName.internalName] = partNames