backend: introduce common backend context

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/BackendContext.kt

@@ -0,0 +1,27 @@
+/*
+ * 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.backend.common
+
+import org.jetbrains.kotlin.backend.common.descriptors.SharedVariablesManager
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.ir.descriptors.IrBuiltIns
+
+interface BackendContext {
+    val builtIns: KotlinBuiltIns
+    val irBuiltIns: IrBuiltIns
+    val sharedVariablesManager: SharedVariablesManager
+}

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/SharedVariablesManager.kt

@@ -0,0 +1,31 @@
+/*
+ * 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.backend.common.descriptors
+
+import org.jetbrains.kotlin.descriptors.VariableDescriptor
+import org.jetbrains.kotlin.ir.IrStatement
+import org.jetbrains.kotlin.ir.declarations.IrVariable
+import org.jetbrains.kotlin.ir.expressions.IrExpression
+import org.jetbrains.kotlin.ir.expressions.IrGetValue
+import org.jetbrains.kotlin.ir.expressions.IrSetVariable
+
+interface SharedVariablesManager {
+    fun createSharedVariableDescriptor(variableDescriptor: VariableDescriptor): VariableDescriptor
+    fun defineSharedValue(sharedVariableDescriptor: VariableDescriptor, originalDeclaration: IrVariable): IrStatement
+    fun getSharedValue(sharedVariableDescriptor: VariableDescriptor, originalGet: IrGetValue): IrExpression
+    fun setSharedValue(sharedVariableDescriptor: VariableDescriptor, originalSet: IrSetVariable): IrExpression
+}

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmBackendContext.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.backend.jvm
 
+import org.jetbrains.kotlin.backend.common.BackendContext
 import org.jetbrains.kotlin.backend.jvm.descriptors.JvmSharedVariablesManager
 import org.jetbrains.kotlin.backend.jvm.descriptors.SpecialDescriptorsFactory
 import org.jetbrains.kotlin.codegen.state.GenerationState
@@ -25,9 +26,9 @@ import org.jetbrains.kotlin.psi2ir.PsiSourceManager
 class JvmBackendContext(
         val state: GenerationState,
         val psiSourceManager: PsiSourceManager,
-        val irBuiltIns: IrBuiltIns
-) {
-    val builtIns = state.module.builtIns
+        override val irBuiltIns: IrBuiltIns
+) : BackendContext {
+    override val builtIns = state.module.builtIns
     val specialDescriptorsFactory = SpecialDescriptorsFactory(psiSourceManager, builtIns)
-    val sharedVariablesManager = JvmSharedVariablesManager(builtIns)
+    override val sharedVariablesManager = JvmSharedVariablesManager(builtIns)
 }

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/descriptors/SharedVariablesManager.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.backend.jvm.descriptors
 
+import org.jetbrains.kotlin.backend.common.descriptors.SharedVariablesManager
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.builtins.PrimitiveType
 import org.jetbrains.kotlin.descriptors.*
@@ -35,13 +36,6 @@ import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.scopes.MemberScope
 import org.jetbrains.kotlin.types.*
 
-interface SharedVariablesManager {
-    fun createSharedVariableDescriptor(variableDescriptor: VariableDescriptor): VariableDescriptor
-    fun defineSharedValue(sharedVariableDescriptor: VariableDescriptor, originalDeclaration: IrVariable): IrStatement
-    fun getSharedValue(sharedVariableDescriptor: VariableDescriptor, originalGet: IrGetValue): IrExpression
-    fun setSharedValue(sharedVariableDescriptor: VariableDescriptor, originalSet: IrSetVariable): IrExpression
-}
-
 class JvmSharedVariablesManager(val builtIns: KotlinBuiltIns) : SharedVariablesManager {
     private val kotlinJvmInternalPackage = KnownPackageFragmentDescriptor(builtIns.builtInsModule, FqName("kotlin.jvm.internal"))
     private val refNamespaceClass = KnownClassDescriptor.createClass(Name.identifier("Ref"), kotlinJvmInternalPackage, listOf(builtIns.anyType))