Support calling inline functions inside inline classes

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

@@ -1,23 +1,11 @@
 /*
- * 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.
+ * Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.codegen.inline
 
 import com.intellij.openapi.vfs.VirtualFile
-import org.jetbrains.kotlin.backend.common.descriptors.substitute
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.codegen.AsmUtil
 import org.jetbrains.kotlin.codegen.BaseExpressionCodegen
@@ -52,7 +40,9 @@ import org.jetbrains.kotlin.resolve.jvm.AsmTypes.JAVA_CLASS_TYPE
 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.types.*
+import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.types.TypeProjectionImpl
+import org.jetbrains.kotlin.types.TypeSubstitutor
 import org.jetbrains.kotlin.util.OperatorNameConventions
 import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 import org.jetbrains.org.objectweb.asm.*
@@ -191,12 +181,12 @@ private fun getInlineName(
             return implementationOwnerInternalName
         }
         is ClassifierDescriptor -> {
-            return typeMapper.mapType(currentDescriptor).internalName
+            return typeMapper.mapClass(currentDescriptor).internalName
         }
         is FunctionDescriptor -> {
             val descriptor = typeMapper.bindingContext.get(CodegenBinding.CLASS_FOR_CALLABLE, currentDescriptor)
             if (descriptor != null) {
-                return typeMapper.mapType(descriptor).internalName
+                return typeMapper.mapClass(descriptor).internalName
             }
         }
     }

compiler/testData/codegen/box/inlineClasses/useInlineFunctionInsideInlineClass.kt

@@ -0,0 +1,14 @@
+// !LANGUAGE: +InlineClasses
+
+inline class Foo(val a: String) {
+    fun test(): String {
+        return a + inlineFun()
+    }
+}
+
+inline fun inlineFun(): String = "K"
+
+fun box(): String {
+    val f = Foo("O")
+    return f.test()
+}

compiler/testData/codegen/bytecodeText/inlineClasses/checkOuterInlineFunctionCall.kt

@@ -0,0 +1,13 @@
+// !LANGUAGE: +InlineClasses
+
+inline class Foo(val a: String) {
+    fun test(): String {
+        return notInlineFun() + inlineFun()
+    }
+}
+
+inline fun inlineFun(): String = "K"
+fun notInlineFun(): String = "O"
+
+// 0 INVOKESTATIC CheckOuterInlineFunctionCallKt.inlineFun
+// 1 INVOKESTATIC CheckOuterInlineFunctionCallKt.notInlineFun

compiler/tests-ir-jvm/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java

@@ -10316,6 +10316,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");
             doTest(fileName);
         }
+
+        @TestMetadata("useInlineFunctionInsideInlineClass.kt")
+        public void testUseInlineFunctionInsideInlineClass() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/useInlineFunctionInsideInlineClass.kt");
+            doTest(fileName);
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/innerNested")

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -10316,6 +10316,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");
             doTest(fileName);
         }
+
+        @TestMetadata("useInlineFunctionInsideInlineClass.kt")
+        public void testUseInlineFunctionInsideInlineClass() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/useInlineFunctionInsideInlineClass.kt");
+            doTest(fileName);
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/innerNested")

compiler/tests/org/jetbrains/kotlin/codegen/BytecodeTextTestGenerated.java

@@ -1898,6 +1898,12 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/inlineClasses/callMemberMethodsInsideInlineClass.kt");
             doTest(fileName);
         }
+
+        @TestMetadata("checkOuterInlineFunctionCall.kt")
+        public void testCheckOuterInlineFunctionCall() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/inlineClasses/checkOuterInlineFunctionCall.kt");
+            doTest(fileName);
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/bytecodeText/interfaces")

compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -10316,6 +10316,12 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");
             doTest(fileName);
         }
+
+        @TestMetadata("useInlineFunctionInsideInlineClass.kt")
+        public void testUseInlineFunctionInsideInlineClass() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/useInlineFunctionInsideInlineClass.kt");
+            doTest(fileName);
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/innerNested")

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -11276,6 +11276,12 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/emptyConstructorForInlineClass.kt");
             doTest(fileName);
         }
+
+        @TestMetadata("useInlineFunctionInsideInlineClass.kt")
+        public void testUseInlineFunctionInsideInlineClass() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/inlineClasses/useInlineFunctionInsideInlineClass.kt");
+            doTest(fileName);
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/innerNested")