Cleanup inline codegen classes

Fix warnings, typos, formatting, break long lines, remove unused, add
nullability annotations, inline small methods used only once

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

@@ -23,8 +23,6 @@ import org.jetbrains.kotlin.codegen.AsmUtil;
 import org.jetbrains.kotlin.codegen.ClassBuilder;
 import org.jetbrains.kotlin.codegen.FieldInfo;
 import org.jetbrains.kotlin.codegen.StackValue;
-import org.jetbrains.kotlin.codegen.state.GenerationState;
-import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin;
 import org.jetbrains.org.objectweb.asm.*;
 import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
@@ -36,27 +34,16 @@ import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil.isThis0;
 import static org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin.NO_ORIGIN;
 
 public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjectTransformationInfo> {
-
-    protected final GenerationState state;
-
-    protected final KotlinTypeMapper typeMapper;
+    private final InliningContext inliningContext;
+    private final Type oldObjectType;
+    private final boolean isSameModule;
+    private final Map<String, List<String>> fieldNames = new HashMap<String, List<String>>();
 
     private MethodNode constructor;
-
     private String sourceInfo;
-
     private String debugInfo;
-
     private SourceMapper sourceMapper;
 
-    private final InliningContext inliningContext;
-
-    private final Type oldObjectType;
-
-    private final boolean isSameModule;
-
-    private final Map<String, List<String>> fieldNames = new HashMap<String, List<String>>();
-
     public AnonymousObjectTransformer(
             @NotNull AnonymousObjectTransformationInfo transformationInfo,
             @NotNull InliningContext inliningContext,
@@ -64,8 +51,6 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
     ) {
         super(transformationInfo, inliningContext.state);
         this.isSameModule = isSameModule;
-        this.state = inliningContext.state;
-        this.typeMapper = state.getTypeMapper();
         this.inliningContext = inliningContext;
         this.oldObjectType = Type.getObjectType(transformationInfo.getOldClassName());
     }
@@ -94,25 +79,25 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
                     int access, @NotNull String name, @NotNull String desc, String signature, String[] exceptions
             ) {
                 MethodNode node = new MethodNode(access, name, desc, signature, exceptions);
-                if (name.equals("<init>")){
-                    if (constructor != null)
+                if (name.equals("<init>")) {
+                    if (constructor != null) {
                         throw new RuntimeException("Lambda, SAM or anonymous object should have only one constructor");
-
+                    }
                     constructor = node;
-                } else {
+                }
+                else {
                     methodsToTransform.add(node);
                 }
                 return node;
             }
 
             @Override
-            public FieldVisitor visitField(
-                    int access, @NotNull String name, @NotNull String desc, String signature, Object value
-            ) {
+            public FieldVisitor visitField(int access, @NotNull String name, @NotNull String desc, String signature, Object value) {
                 addUniqueField(name);
                 if (InlineCodegenUtil.isCapturedFieldName(name)) {
                     return null;
-                } else {
+                }
+                else {
                     return classBuilder.newField(JvmDeclarationOrigin.NO_ORIGIN, access, name, desc, signature, value);
                 }
             }
@@ -125,7 +110,6 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
 
             @Override
             public void visitEnd() {
-
             }
         }, ClassReader.SKIP_FRAMES);
 
@@ -218,29 +202,30 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
             @NotNull ParametersBuilder capturedBuilder,
             boolean isConstructor
     ) {
-        ReifiedTypeParametersUsages typeParametersToReify = inliningContext.reifedTypeInliner.reifyInstructions(sourceNode);
-        Parameters parameters = isConstructor ? capturedBuilder.buildParameters() : getMethodParametersWithCaptured(capturedBuilder, sourceNode);
+        ReifiedTypeParametersUsages typeParametersToReify = inliningContext.reifiedTypeInliner.reifyInstructions(sourceNode);
+        Parameters parameters =
+                isConstructor ? capturedBuilder.buildParameters() : getMethodParametersWithCaptured(capturedBuilder, sourceNode);
 
-        RegeneratedLambdaFieldRemapper remapper =
-                new RegeneratedLambdaFieldRemapper(oldObjectType.getInternalName(), transformationInfo.getNewClassName(),
-                                                   parameters, transformationInfo.getCapturedLambdasToInline(),
-                                                   parentRemapper, isConstructor);
+        RegeneratedLambdaFieldRemapper remapper = new RegeneratedLambdaFieldRemapper(
+                oldObjectType.getInternalName(), transformationInfo.getNewClassName(), parameters,
+                transformationInfo.getCapturedLambdasToInline(), parentRemapper, isConstructor
+        );
 
-        MethodInliner inliner =
-                new MethodInliner(
-                        sourceNode,
-                        parameters,
-                        inliningContext.subInline(inliningContext.nameGenerator.subGenerator("lambda")),
-                        remapper,
-                        isSameModule,
-                        "Transformer for " + transformationInfo.getOldClassName(),
-                        sourceMapper,
-                        new InlineCallSiteInfo(
-                                transformationInfo.getOldClassName(),
-                                sourceNode.name,
-                                isConstructor ? transformationInfo.getNewConstructorDescriptor() : sourceNode.desc),
-                        null
-                );
+        MethodInliner inliner = new MethodInliner(
+                sourceNode,
+                parameters,
+                inliningContext.subInline(inliningContext.nameGenerator.subGenerator("lambda")),
+                remapper,
+                isSameModule,
+                "Transformer for " + transformationInfo.getOldClassName(),
+                sourceMapper,
+                new InlineCallSiteInfo(
+                        transformationInfo.getOldClassName(),
+                        sourceNode.name,
+                        isConstructor ? transformationInfo.getNewConstructorDescriptor() : sourceNode.desc
+                ),
+                null
+        );
 
         InlineResult result = inliner.doInline(deferringVisitor, new LocalVarRemapper(parameters, 0), false, LabelOwner.NOT_APPLICABLE);
         result.getReifiedTypeParametersUsages().mergeAll(typeParametersToReify);
@@ -258,13 +243,13 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
         List<Type> descTypes = new ArrayList<Type>();
 
         Parameters constructorParams = constructorInlineBuilder.buildParameters();
-        int [] capturedIndexes = new int [constructorParams.getReal().size() + constructorParams.getCaptured().size()];
+        int[] capturedIndexes = new int[constructorParams.getReal().size() + constructorParams.getCaptured().size()];
         int index = 0;
         int size = 0;
 
         //complex processing cause it could have super constructor call params
         for (ParameterInfo info : constructorParams) {
-            if (!info.isSkipped()) { //not inlined
+            if (!info.isSkipped) { //not inlined
                 if (info.isCaptured() || info instanceof CapturedParamInfo) {
                     capturedIndexes[index] = size;
                     index++;
@@ -280,17 +265,16 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
         String constructorDescriptor = Type.getMethodDescriptor(Type.VOID_TYPE, descTypes.toArray(new Type[descTypes.size()]));
         //TODO for inline method make public class
         transformationInfo.setNewConstructorDescriptor(constructorDescriptor);
-        MethodVisitor constructorVisitor = classBuilder.newMethod(NO_ORIGIN,
-                                                                  AsmUtil.NO_FLAG_PACKAGE_PRIVATE,
-                                                                  "<init>", constructorDescriptor,
-                                                                  null, ArrayUtil.EMPTY_STRING_ARRAY);
+        MethodVisitor constructorVisitor = classBuilder.newMethod(
+                NO_ORIGIN, AsmUtil.NO_FLAG_PACKAGE_PRIVATE, "<init>", constructorDescriptor, null, ArrayUtil.EMPTY_STRING_ARRAY
+        );
 
         final Label newBodyStartLabel = new Label();
         constructorVisitor.visitLabel(newBodyStartLabel);
         //initialize captured fields
         List<NewJavaField> newFieldsWithSkipped = TransformationUtilsKt.getNewFieldsToGenerate(allCapturedBuilder.listCaptured());
-        List<FieldInfo> fieldInfoWithSkipped = TransformationUtilsKt.transformToFieldInfo(
-                Type.getObjectType(transformationInfo.getNewClassName()), newFieldsWithSkipped);
+        List<FieldInfo> fieldInfoWithSkipped =
+                TransformationUtilsKt.transformToFieldInfo(Type.getObjectType(transformationInfo.getNewClassName()), newFieldsWithSkipped);
 
         int paramIndex = 0;
         InstructionAdapter capturedFieldInitializer = new InstructionAdapter(constructorVisitor);
@@ -311,23 +295,28 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
 
             if (fake.getLambda() != null) {
                 //set remap value to skip this fake (captured with lambda already skipped)
-                StackValue composed = StackValue.field(fake.getType(),
-                                                       oldObjectType,
-                                                       fake.getNewFieldName(),
-                                                       false,
-                                                       StackValue.LOCAL_0);
+                StackValue composed = StackValue.field(
+                        fake.getType(),
+                        oldObjectType,
+                        fake.getNewFieldName(),
+                        false,
+                        StackValue.LOCAL_0
+                );
                 fake.setRemapValue(composed);
             }
         }
 
-        MethodNode intermediateMethodNode = new MethodNode(AsmUtil.NO_FLAG_PACKAGE_PRIVATE, "<init>", constructorDescriptor, null, ArrayUtil.EMPTY_STRING_ARRAY);
+        MethodNode intermediateMethodNode =
+                new MethodNode(AsmUtil.NO_FLAG_PACKAGE_PRIVATE, "<init>", constructorDescriptor, null, ArrayUtil.EMPTY_STRING_ARRAY);
         inlineMethodAndUpdateGlobalResult(parentRemapper, intermediateMethodNode, constructor, constructorInlineBuilder, true);
 
         AbstractInsnNode first = intermediateMethodNode.instructions.getFirst();
         final Label oldStartLabel = first instanceof LabelNode ? ((LabelNode) first).getLabel() : null;
         intermediateMethodNode.accept(new MethodBodyVisitor(capturedFieldInitializer) {
             @Override
-            public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
+            public void visitLocalVariable(
+                    @NotNull String name, @NotNull String desc, String signature, @NotNull Label start, @NotNull Label end, int index
+            ) {
                 if (oldStartLabel == start) {
                     start = newBodyStartLabel;//patch for jack&jill
                 }
@@ -335,14 +324,13 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
             }
         });
         constructorVisitor.visitEnd();
-        AsmUtil.genClosureFields(TransformationUtilsKt.toNameTypePair(TransformationUtilsKt.filterSkipped(newFieldsWithSkipped)), classBuilder);
+        AsmUtil.genClosureFields(
+                TransformationUtilsKt.toNameTypePair(TransformationUtilsKt.filterSkipped(newFieldsWithSkipped)), classBuilder
+        );
     }
 
     @NotNull
-    private Parameters getMethodParametersWithCaptured(
-            @NotNull ParametersBuilder capturedBuilder,
-            @NotNull MethodNode sourceNode
-    ) {
+    private Parameters getMethodParametersWithCaptured(@NotNull ParametersBuilder capturedBuilder, @NotNull MethodNode sourceNode) {
         ParametersBuilder builder = ParametersBuilder.initializeBuilderFrom(oldObjectType, sourceNode.desc);
         for (CapturedParamInfo param : capturedBuilder.listCaptured()) {
             builder.addCapturedParamCopy(param);
@@ -353,26 +341,23 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
     @NotNull
     private static DeferredMethodVisitor newMethod(@NotNull final ClassBuilder builder, @NotNull final MethodNode original) {
         return new DeferredMethodVisitor(
-                new MethodNode(original.access,
-                               original.name,
-                               original.desc,
-                               original.signature,
-                               ArrayUtil.toStringArray(original.exceptions)),
-
+                new MethodNode(
+                        original.access, original.name, original.desc, original.signature,
+                        ArrayUtil.toStringArray(original.exceptions)
+                ),
                 new Function0<MethodVisitor>() {
                     @Override
                     public MethodVisitor invoke() {
                         return builder.newMethod(
-                                NO_ORIGIN,
-                                original.access,
-                                original.name,
-                                original.desc,
-                                original.signature,
-                                ArrayUtil.toStringArray(original.exceptions));
+                                NO_ORIGIN, original.access, original.name, original.desc, original.signature,
+                                ArrayUtil.toStringArray(original.exceptions)
+                        );
                     }
-                });
+                }
+        );
     }
 
+    @NotNull
     private List<CapturedParamInfo> extractParametersMappingAndPatchConstructor(
             @NotNull MethodNode constructor,
             @NotNull ParametersBuilder capturedParamBuilder,
@@ -380,8 +365,8 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
             @NotNull final AnonymousObjectTransformationInfo transformationInfo,
             @NotNull FieldRemapper parentFieldRemapper
     ) {
-
         CapturedParamOwner owner = new CapturedParamOwner() {
+            @NotNull
             @Override
             public Type getType() {
                 return Type.getObjectType(transformationInfo.getOldClassName());
@@ -400,7 +385,6 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
                 FieldInsnNode fieldNode = (FieldInsnNode) cur;
                 String fieldName = fieldNode.name;
                 if (fieldNode.getOpcode() == Opcodes.PUTFIELD && InlineCodegenUtil.isCapturedFieldName(fieldName)) {
-
                     boolean isPrevVarNode = fieldNode.getPrevious() instanceof VarInsnNode;
                     boolean isPrevPrevVarNode = isPrevVarNode && fieldNode.getPrevious().getPrevious() instanceof VarInsnNode;
 
@@ -410,8 +394,13 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
                             VarInsnNode previous = (VarInsnNode) fieldNode.getPrevious();
                             int varIndex = previous.var;
                             LambdaInfo lambdaInfo = indexToLambda.get(varIndex);
-                            String newFieldName = isThis0(fieldName) && shouldRenameThis0(parentFieldRemapper, indexToLambda.values()) ? getNewFieldName(fieldName, true) : fieldName;
-                            CapturedParamInfo info = capturedParamBuilder.addCapturedParam(owner, fieldName, newFieldName, Type.getType(fieldNode.desc), lambdaInfo != null, null);
+                            String newFieldName =
+                                    isThis0(fieldName) && shouldRenameThis0(parentFieldRemapper, indexToLambda.values())
+                                    ? getNewFieldName(fieldName, true)
+                                    : fieldName;
+                            CapturedParamInfo info = capturedParamBuilder.addCapturedParam(
+                                    owner, fieldName, newFieldName, Type.getType(fieldNode.desc), lambdaInfo != null, null
+                            );
                             if (lambdaInfo != null) {
                                 info.setLambda(lambdaInfo);
                                 capturedLambdas.add(lambdaInfo);
@@ -440,14 +429,15 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
             constructorDesc = Type.getMethodDescriptor(Type.VOID_TYPE);
         }
 
-        Type [] types = Type.getArgumentTypes(constructorDesc);
+        Type[] types = Type.getArgumentTypes(constructorDesc);
         for (Type type : types) {
             LambdaInfo info = indexToLambda.get(constructorParamBuilder.getNextValueParameterIndex());
-            ParameterInfo parameterInfo = constructorParamBuilder.addNextParameter(type, info != null, null);
+            ParameterInfo parameterInfo = constructorParamBuilder.addNextParameter(type, info != null);
             parameterInfo.setLambda(info);
             if (capturedParams.contains(parameterInfo.getIndex())) {
                 parameterInfo.setCaptured(true);
-            } else {
+            }
+            else {
                 //otherwise it's super constructor parameter
             }
         }
@@ -456,7 +446,9 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
         //TODO: some of such parameters could be skipped - we should perform additional analysis
         Map<String, LambdaInfo> capturedLambdasToInline = new HashMap<String, LambdaInfo>(); //captured var of inlined parameter
         List<CapturedParamDesc> allRecapturedParameters = new ArrayList<CapturedParamDesc>();
-        boolean addCapturedNotAddOuter = parentFieldRemapper.isRoot() || (parentFieldRemapper instanceof InlinedLambdaRemapper && parentFieldRemapper.getParent().isRoot());
+        boolean addCapturedNotAddOuter =
+                parentFieldRemapper.isRoot() ||
+                (parentFieldRemapper instanceof InlinedLambdaRemapper && parentFieldRemapper.getParent().isRoot());
         Map<String, CapturedParamInfo> alreadyAdded = new HashMap<String, CapturedParamInfo>();
         for (LambdaInfo info : capturedLambdas) {
             if (addCapturedNotAddOuter) {
@@ -466,16 +458,20 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
 
                     CapturedParamInfo recapturedParamInfo = capturedParamBuilder.addCapturedParam(
                             desc,
-                            alreadyAddedParam != null ? alreadyAddedParam.getNewFieldName() : getNewFieldName(desc.getFieldName(), false));
-                    StackValue composed = StackValue.field(desc.getType(),
-                                                           oldObjectType, /*TODO owner type*/
-                                                           recapturedParamInfo.getNewFieldName(),
-                                                           false,
-                                                           StackValue.LOCAL_0);
+                            alreadyAddedParam != null ? alreadyAddedParam.getNewFieldName() : getNewFieldName(desc.getFieldName(), false)
+                    );
+                    StackValue composed = StackValue.field(
+                            desc.getType(),
+                            oldObjectType, /*TODO owner type*/
+                            recapturedParamInfo.getNewFieldName(),
+                            false,
+                            StackValue.LOCAL_0
+                    );
                     recapturedParamInfo.setRemapValue(composed);
                     allRecapturedParameters.add(desc);
 
-                    constructorParamBuilder.addCapturedParam(recapturedParamInfo, recapturedParamInfo.getNewFieldName()).setRemapValue(composed);
+                    constructorParamBuilder.addCapturedParam(recapturedParamInfo, recapturedParamInfo.getNewFieldName())
+                            .setRemapValue(composed);
                     if (alreadyAddedParam != null) {
                         recapturedParamInfo.setSkipInConstructor(true);
                     }
@@ -495,12 +491,14 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
             final Type ownerType = Type.getObjectType(parent.getLambdaInternalName());
 
             CapturedParamDesc desc = new CapturedParamDesc(new CapturedParamOwner() {
+                @NotNull
                 @Override
                 public Type getType() {
                     return ownerType;
                 }
             }, InlineCodegenUtil.THIS, ownerType);
-            CapturedParamInfo recapturedParamInfo = capturedParamBuilder.addCapturedParam(desc, InlineCodegenUtil.THIS$0/*outer lambda/object*/);
+            CapturedParamInfo recapturedParamInfo =
+                    capturedParamBuilder.addCapturedParam(desc, InlineCodegenUtil.THIS$0/*outer lambda/object*/);
             StackValue composed = StackValue.LOCAL_0;
             recapturedParamInfo.setRemapValue(composed);
             allRecapturedParameters.add(desc);
@@ -514,7 +512,7 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
         return constructorAdditionalFakeParams;
     }
 
-    private static boolean shouldRenameThis0(@NotNull FieldRemapper parentFieldRemapper, Collection<LambdaInfo> values) {
+    private static boolean shouldRenameThis0(@NotNull FieldRemapper parentFieldRemapper, @NotNull Collection<LambdaInfo> values) {
         if (isFirstDeclSiteLambdaFieldRemapper(parentFieldRemapper)) {
             for (LambdaInfo value : values) {
                 for (CapturedParamDesc desc : value.getCapturedVars()) {
@@ -528,11 +526,12 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
     }
 
     @NotNull
-    public String getNewFieldName(@NotNull String oldName, boolean originalField) {
+    private String getNewFieldName(@NotNull String oldName, boolean originalField) {
         if (InlineCodegenUtil.THIS$0.equals(oldName)) {
             if (!originalField) {
                 return oldName;
-            } else {
+            }
+            else {
                 //rename original 'this$0' in declaration site lambda (inside inline function) to use this$0 only for outer lambda/object access on call site
                 return addUniqueField(oldName + InlineCodegenUtil.INLINE_FUN_THIS_0_SUFFIX);
             }
@@ -553,7 +552,7 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
         return newName;
     }
 
-    private static boolean isFirstDeclSiteLambdaFieldRemapper(FieldRemapper parentRemapper) {
+    private static boolean isFirstDeclSiteLambdaFieldRemapper(@NotNull FieldRemapper parentRemapper) {
         return !(parentRemapper instanceof RegeneratedLambdaFieldRemapper) && !(parentRemapper instanceof InlinedLambdaRemapper);
     }
 }

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

@@ -22,7 +22,6 @@ import org.jetbrains.org.objectweb.asm.signature.SignatureReader
 import org.jetbrains.org.objectweb.asm.signature.SignatureVisitor
 
 class AsmTypeRemapper(val typeRemapper: TypeRemapper, val isDefaultGeneration: Boolean, val result: InlineResult) : Remapper() {
-
     override fun map(type: String): String {
         return typeRemapper.map(type)
     }
@@ -33,7 +32,6 @@ class AsmTypeRemapper(val typeRemapper: TypeRemapper, val isDefaultGeneration: B
         }
 
         return object : RemappingSignatureAdapter(v, this) {
-
             override fun visitTypeVariable(name: String) {
                 /*TODO try to erase absent type variable*/
                 val mapping = typeRemapper.mapTypeParameter(name) ?: return super.visitTypeVariable(name)
@@ -54,4 +52,4 @@ class AsmTypeRemapper(val typeRemapper: TypeRemapper, val isDefaultGeneration: B
             }
         }
     }
-}
+}

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

@@ -44,9 +44,4 @@ public class CapturedParamDesc {
     public Type getType() {
         return type;
     }
-
-    @NotNull
-    public static CapturedParamDesc createDesc(@NotNull CapturedParamOwner containingLambdaInfo, @NotNull String fieldName, @NotNull Type type) {
-        return new CapturedParamDesc(containingLambdaInfo, fieldName, type);
-    }
 }

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

@@ -17,35 +17,24 @@
 package org.jetbrains.kotlin.codegen.inline;
 
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.codegen.StackValue;
-import org.jetbrains.org.objectweb.asm.Type;
 
 public class CapturedParamInfo extends ParameterInfo {
-
-    public static final CapturedParamInfo STUB = new CapturedParamInfo(CapturedParamDesc.createDesc(new CapturedParamOwner() {
-        @Override
-        public Type getType() {
-            return Type.getObjectType("STUB");
-        }
-    }, "STUB", Type.getObjectType("STUB")), true, -1, -1);
-
     public final CapturedParamDesc desc;
-
     private final String newFieldName;
 
     private boolean skipInConstructor;
 
-    public CapturedParamInfo(@NotNull CapturedParamDesc desc, boolean skipped, int index, int remapIndex) {
-        this(desc, desc.getFieldName(), skipped, index, remapIndex);
-    }
-
     public CapturedParamInfo(@NotNull CapturedParamDesc desc, @NotNull String newFieldName, boolean skipped, int index, int remapIndex) {
         super(desc.getType(), skipped, index, remapIndex, index);
         this.desc = desc;
         this.newFieldName = newFieldName;
     }
 
-    public CapturedParamInfo(@NotNull CapturedParamDesc desc, @NotNull String newFieldName, boolean skipped, int index, StackValue remapIndex) {
+    public CapturedParamInfo(
+            @NotNull CapturedParamDesc desc, @NotNull String newFieldName, boolean skipped, int index, @Nullable StackValue remapIndex
+    ) {
         super(desc.getType(), skipped, index, remapIndex, index);
         this.desc = desc;
         this.newFieldName = newFieldName;
@@ -67,9 +56,9 @@ public class CapturedParamInfo extends ParameterInfo {
     }
 
     @NotNull
-    public CapturedParamInfo clone(int newIndex, StackValue newRamapIndex) {
-        CapturedParamInfo capturedParamInfo = new CapturedParamInfo(desc, newFieldName, isSkipped, newIndex, newRamapIndex);
-        capturedParamInfo.setLambda(lambda);
+    private CapturedParamInfo clone(int newIndex, @Nullable StackValue newRemapIndex) {
+        CapturedParamInfo capturedParamInfo = new CapturedParamInfo(desc, newFieldName, isSkipped, newIndex, newRemapIndex);
+        capturedParamInfo.setLambda(getLambda());
         capturedParamInfo.setSkipInConstructor(skipInConstructor);
         return capturedParamInfo;
     }

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

@@ -16,8 +16,10 @@
 
 package org.jetbrains.kotlin.codegen.inline;
 
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.org.objectweb.asm.Type;
 
 public interface CapturedParamOwner {
+    @NotNull
     Type getType();
 }

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

@@ -17,18 +17,12 @@
 package org.jetbrains.kotlin.codegen.inline
 
 import com.google.common.collect.LinkedListMultimap
-import java.util.ArrayList
-import com.intellij.util.containers.Stack
 import org.jetbrains.kotlin.codegen.optimization.common.isMeaningful
-import org.jetbrains.org.objectweb.asm.Opcodes
 import org.jetbrains.org.objectweb.asm.tree.*
-import java.util.Comparator
-import java.util.Collections
+import java.util.*
 
 abstract class CoveringTryCatchNodeProcessor(parameterSize: Int) {
-
     val tryBlocksMetaInfo: IntervalMetaInfo<TryCatchBlockNodeInfo> = IntervalMetaInfo()
-
     val localVarsMetaInfo: IntervalMetaInfo<LocalVarNodeWrapper> = IntervalMetaInfo()
 
     var nextFreeLocalIndex: Int = parameterSize
@@ -70,11 +64,11 @@ abstract class CoveringTryCatchNodeProcessor(parameterSize: Int) {
             result
         }
 
-        Collections.sort<TryCatchBlockNodeInfo>(intervals, comp)
+        Collections.sort(intervals, comp)
         return intervals
     }
 
-    protected fun substituteTryBlockNodes(node: MethodNode) {
+    fun substituteTryBlockNodes(node: MethodNode) {
         node.tryCatchBlocks.clear()
         sortTryCatchBlocks(tryBlocksMetaInfo.allIntervals)
         for (info in tryBlocksMetaInfo.getMeaningfulIntervals()) {
@@ -82,7 +76,6 @@ abstract class CoveringTryCatchNodeProcessor(parameterSize: Int) {
         }
     }
 
-
     fun substituteLocalVarTable(node: MethodNode) {
         node.localVariables.clear()
         for (info in localVarsMetaInfo.getMeaningfulIntervals()) {
@@ -92,13 +85,9 @@ abstract class CoveringTryCatchNodeProcessor(parameterSize: Int) {
 }
 
 class IntervalMetaInfo<T : SplittableInterval<T>> {
-
     val intervalStarts = LinkedListMultimap.create<LabelNode, T>()
-
     val intervalEnds = LinkedListMultimap.create<LabelNode, T>()
-
     val allIntervals: ArrayList<T> = arrayListOf()
-
     val currentIntervals: MutableSet<T> = linkedSetOf()
 
     fun addNewInterval(newInfo: T) {
@@ -117,17 +106,10 @@ class IntervalMetaInfo<T : SplittableInterval<T>> {
         intervalEnds.put(remapped.endLabel, remapped)
     }
 
-    fun splitCurrentIntervals(by : Interval, keepStart: Boolean): List<SplitPair<T>> {
+    fun splitCurrentIntervals(by: Interval, keepStart: Boolean): List<SplitPair<T>> {
         return currentIntervals.map { split(it, by, keepStart) }
     }
 
-    fun splitAndRemoveIntervalsFromCurrents(by : Interval) {
-        val copies = ArrayList(currentIntervals)
-        copies.forEach {
-            splitAndRemoveInterval(it, by, true)
-        }
-    }
-
     fun processCurrent(curIns: LabelNode, directOrder: Boolean) {
         getInterval(curIns, directOrder).forEach {
             val added = currentIntervals.add(it)
@@ -140,25 +122,27 @@ class IntervalMetaInfo<T : SplittableInterval<T>> {
         }
     }
 
-    fun split(interval: T, by : Interval, keepStart: Boolean): SplitPair<T> {
+    fun split(interval: T, by: Interval, keepStart: Boolean): SplitPair<T> {
         val split = interval.split(by, keepStart)
         if (!keepStart) {
             remapStartLabel(split.newPart.startLabel, split.patchedPart)
-        } else {
+        }
+        else {
             remapEndLabel(split.newPart.endLabel, split.patchedPart)
         }
         addNewInterval(split.newPart)
         return split
     }
 
-    fun splitAndRemoveInterval(interval: T, by : Interval, keepStart: Boolean): SplitPair<T> {
+    fun splitAndRemoveInterval(interval: T, by: Interval, keepStart: Boolean): SplitPair<T> {
         val splitPair = split(interval, by, keepStart)
         val removed = currentIntervals.remove(splitPair.patchedPart)
-        assert(removed, {"Wrong interval structure: $splitPair"})
+        assert(removed) { "Wrong interval structure: $splitPair" }
         return splitPair
     }
 
-    fun getInterval(curIns: LabelNode, isOpen: Boolean) = if (isOpen) intervalStarts.get(curIns) else intervalEnds.get(curIns)
+    fun getInterval(curIns: LabelNode, isOpen: Boolean) =
+            if (isOpen) intervalStarts.get(curIns) else intervalEnds.get(curIns)
 }
 
 private fun Interval.isMeaningless(): Boolean {
@@ -175,23 +159,16 @@ fun <T : SplittableInterval<T>> IntervalMetaInfo<T>.getMeaningfulIntervals(): Li
 }
 
 class DefaultProcessor(val node: MethodNode, parameterSize: Int) : CoveringTryCatchNodeProcessor(parameterSize) {
-
     init {
-        node.tryCatchBlocks.forEach { addTryNode(it) }
-        node.localVariables.forEach { addLocalVarNode(it) }
+        node.tryCatchBlocks.forEach {
+            tryBlocksMetaInfo.addNewInterval(TryCatchBlockNodeInfo(it, false))
+        }
+        node.localVariables.forEach {
+            localVarsMetaInfo.addNewInterval(LocalVarNodeWrapper(it))
+        }
     }
 
-    fun addLocalVarNode(it: LocalVariableNode) {
-        localVarsMetaInfo.addNewInterval(LocalVarNodeWrapper(it))
-    }
-
-    fun addTryNode(node: TryCatchBlockNode) {
-        tryBlocksMetaInfo.addNewInterval(TryCatchBlockNodeInfo(node, false))
-    }
-
-    override fun instructionIndex(inst: AbstractInsnNode): Int {
-        return node.instructions.indexOf(inst)
-    }
+    override fun instructionIndex(inst: AbstractInsnNode): Int = node.instructions.indexOf(inst)
 }
 
 class LocalVarNodeWrapper(val node: LocalVariableNode) : Interval, SplittableInterval<LocalVarNodeWrapper> {
@@ -216,5 +193,4 @@ class LocalVarNodeWrapper(val node: LocalVariableNode) : Interval, SplittableInt
                 LocalVariableNode(node.name, node.desc, node.signature, newPartInterval.first, newPartInterval.second, node.index)
         ))
     }
-
-}
+}

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

@@ -20,7 +20,6 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.codegen.StackValue;
 import org.jetbrains.org.objectweb.asm.Opcodes;
-import org.jetbrains.org.objectweb.asm.Type;
 import org.jetbrains.org.objectweb.asm.tree.AbstractInsnNode;
 import org.jetbrains.org.objectweb.asm.tree.FieldInsnNode;
 import org.jetbrains.org.objectweb.asm.tree.MethodNode;
@@ -29,30 +28,24 @@ import java.util.Collection;
 import java.util.List;
 
 public class FieldRemapper {
-
-    private final String lambdaInternalName;
-
     protected FieldRemapper parent;
-
+    private final String lambdaInternalName;
     private final Parameters params;
 
     public FieldRemapper(@Nullable String lambdaInternalName, @Nullable FieldRemapper parent, @NotNull Parameters methodParams) {
         this.lambdaInternalName = lambdaInternalName;
         this.parent = parent;
-        params = methodParams;
+        this.params = methodParams;
     }
 
-    protected boolean canProcess(@NotNull String fieldOwner, String fieldName, boolean isFolding) {
+    protected boolean canProcess(@NotNull String fieldOwner, @NotNull String fieldName, boolean isFolding) {
         return fieldOwner.equals(getLambdaInternalName()) &&
                //don't process general field of anonymous objects
                InlineCodegenUtil.isCapturedFieldName(fieldName);
     }
 
     @Nullable
-    public AbstractInsnNode foldFieldAccessChainIfNeeded(
-            @NotNull List<AbstractInsnNode> capturedFieldAccess,
-            @NotNull MethodNode node
-    ) {
+    public AbstractInsnNode foldFieldAccessChainIfNeeded(@NotNull List<AbstractInsnNode> capturedFieldAccess, @NotNull MethodNode node) {
         if (capturedFieldAccess.size() == 1) {
             //just aload
             return null;
@@ -72,33 +65,33 @@ public class FieldRemapper {
             int currentInstruction,
             @NotNull MethodNode node
     ) {
-        AbstractInsnNode transformed = null;
         boolean checkParent = !isRoot() && currentInstruction < capturedFieldAccess.size() - 1;
         if (checkParent) {
-            transformed = parent.foldFieldAccessChainIfNeeded(capturedFieldAccess, currentInstruction + 1, node);
-        }
-
-        if (transformed == null) {
-            //if parent couldn't transform
-            FieldInsnNode insnNode = (FieldInsnNode) capturedFieldAccess.get(currentInstruction);
-            if (canProcess(insnNode.owner, insnNode.name, true)) {
-                insnNode.name = "$$$" + insnNode.name;
-                insnNode.setOpcode(Opcodes.GETSTATIC);
-
-                AbstractInsnNode next = capturedFieldAccess.get(0);
-                while (next != insnNode) {
-                    AbstractInsnNode toDelete = next;
-                    next = next.getNext();
-                    node.instructions.remove(toDelete);
-                }
-
-                transformed = capturedFieldAccess.get(capturedFieldAccess.size() - 1);
+            AbstractInsnNode transformed = parent.foldFieldAccessChainIfNeeded(capturedFieldAccess, currentInstruction + 1, node);
+            if (transformed != null) {
+                return transformed;
             }
         }
 
-        return transformed;
+        FieldInsnNode insnNode = (FieldInsnNode) capturedFieldAccess.get(currentInstruction);
+        if (canProcess(insnNode.owner, insnNode.name, true)) {
+            insnNode.name = "$$$" + insnNode.name;
+            insnNode.setOpcode(Opcodes.GETSTATIC);
+
+            AbstractInsnNode next = capturedFieldAccess.get(0);
+            while (next != insnNode) {
+                AbstractInsnNode toDelete = next;
+                next = next.getNext();
+                node.instructions.remove(toDelete);
+            }
+
+            return capturedFieldAccess.get(capturedFieldAccess.size() - 1);
+        }
+
+        return null;
     }
 
+    @Nullable
     public CapturedParamInfo findField(@NotNull FieldInsnNode fieldInsnNode) {
         return findField(fieldInsnNode, params.getCaptured());
     }
@@ -106,13 +99,15 @@ public class FieldRemapper {
     @Nullable
     protected CapturedParamInfo findField(@NotNull FieldInsnNode fieldInsnNode, @NotNull Collection<CapturedParamInfo> captured) {
         for (CapturedParamInfo valueDescriptor : captured) {
-            if (valueDescriptor.getOriginalFieldName().equals(fieldInsnNode.name) && fieldInsnNode.owner.equals(valueDescriptor.getContainingLambdaName())) {
+            if (valueDescriptor.getOriginalFieldName().equals(fieldInsnNode.name) &&
+                valueDescriptor.getContainingLambdaName().equals(fieldInsnNode.owner)) {
                 return valueDescriptor;
             }
         }
         return null;
     }
 
+    @NotNull
     public FieldRemapper getParent() {
         return parent;
     }
@@ -131,8 +126,7 @@ public class FieldRemapper {
 
     @Nullable
     public StackValue getFieldForInline(@NotNull FieldInsnNode node, @Nullable StackValue prefix) {
-        CapturedParamInfo field = MethodInliner.findCapturedField(node, this);
-        return field.getRemapValue();
+        return MethodInliner.findCapturedField(node, this).getRemapValue();
     }
 
     public boolean isInsideInliningLambda() {

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

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.codegen.inline;
 
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 import org.jetbrains.org.objectweb.asm.Label;
 import org.jetbrains.org.objectweb.asm.MethodVisitor;
 import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
@@ -27,19 +28,16 @@ import java.util.List;
 import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil.getLoadStoreArgSize;
 
 public class InlineAdapter extends InstructionAdapter {
-
-    private int nextLocalIndex = 0;
     private final SourceMapper sourceMapper;
-
-    private boolean isLambdaInlining = false;
-
     private final List<CatchBlock> blocks = new ArrayList<CatchBlock>();
 
+    private boolean isLambdaInlining = false;
+    private int nextLocalIndex = 0;
     private int nextLocalIndexBeforeInline = -1;
 
-    public InlineAdapter(MethodVisitor mv, int localsSize, @NotNull SourceMapper sourceMapper) {
+    public InlineAdapter(@NotNull MethodVisitor mv, int localsSize, @NotNull SourceMapper sourceMapper) {
         super(InlineCodegenUtil.API, mv);
-        nextLocalIndex = localsSize;
+        this.nextLocalIndex = localsSize;
         this.sourceMapper = sourceMapper;
     }
 
@@ -70,15 +68,15 @@ public class InlineAdapter extends InstructionAdapter {
         this.isLambdaInlining = isInlining;
         if (isInlining) {
             nextLocalIndexBeforeInline = nextLocalIndex;
-        } else {
+        }
+        else {
             nextLocalIndex = nextLocalIndexBeforeInline;
         }
     }
 
     @Override
-    public void visitTryCatchBlock(Label start,
-            Label end, Label handler, String type) {
-        if(!isLambdaInlining) {
+    public void visitTryCatchBlock(@NotNull Label start, @NotNull Label end, @NotNull Label handler, @Nullable String type) {
+        if (!isLambdaInlining) {
             blocks.add(new CatchBlock(start, end, handler, type));
         }
         else {
@@ -87,7 +85,7 @@ public class InlineAdapter extends InstructionAdapter {
     }
 
     @Override
-    public void visitLineNumber(int line, Label start) {
+    public void visitLineNumber(int line, @NotNull Label start) {
         if (InlineCodegenUtil.GENERATE_SMAP) {
             line = sourceMapper.mapLineNumber(line);
         }
@@ -111,7 +109,7 @@ public class InlineAdapter extends InstructionAdapter {
         private final Label handler;
         private final String type;
 
-        public CatchBlock(Label start, Label end, Label handler, String type) {
+        public CatchBlock(@NotNull Label start, @NotNull Label end, @NotNull Label handler, @Nullable String type) {
             this.start = start;
             this.end = end;
             this.handler = handler;

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

@@ -34,7 +34,8 @@ inline fun <K, V> SLRUMap<K, V>.getOrPut(key: K, defaultValue: () -> V): V {
         val answer = defaultValue()
         put(key, answer)
         answer
-    } else {
+    }
+    else {
         value
     }
 }

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

@@ -35,7 +35,6 @@ import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCache;
 import org.jetbrains.kotlin.name.ClassId;
 import org.jetbrains.kotlin.name.Name;
 import org.jetbrains.kotlin.psi.*;
-import org.jetbrains.kotlin.renderer.DescriptorRenderer;
 import org.jetbrains.kotlin.resolve.BindingContext;
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils;
 import org.jetbrains.kotlin.resolve.DescriptorUtils;
@@ -85,7 +84,9 @@ public class InlineCodegen extends CallGenerator {
     private final Map<Integer, LambdaInfo> expressionMap = new HashMap<Integer, LambdaInfo>();
 
     private final ReifiedTypeInliner reifiedTypeInliner;
-    @Nullable private final TypeParameterMappings typeParameterMappings;
+
+    @Nullable
+    private final TypeParameterMappings typeParameterMappings;
 
     private LambdaInfo activeLambda;
 
@@ -131,35 +132,53 @@ public class InlineCodegen extends CallGenerator {
     }
 
     @Override
-    public void genCallInner(@NotNull Callable callableMethod, @Nullable ResolvedCall<?> resolvedCall, boolean callDefault, @NotNull ExpressionCodegen codegen) {
-        SMAPAndMethodNode nodeAndSmap = null;
+    public void genCallInner(
+            @NotNull Callable callableMethod,
+            @Nullable ResolvedCall<?> resolvedCall,
+            boolean callDefault,
+            @NotNull ExpressionCodegen codegen
+    ) {
         if (!state.getInlineCycleReporter().enterIntoInlining(resolvedCall)) {
             generateStub(resolvedCall, codegen);
             return;
         }
 
+        SMAPAndMethodNode nodeAndSmap = null;
         try {
-            nodeAndSmap = createMethodNode(callDefault);
+            nodeAndSmap = createMethodNode(functionDescriptor, jvmSignature, codegen, context, callDefault);
             endCall(inlineCall(nodeAndSmap));
         }
         catch (CompilationException e) {
             throw e;
         }
+        catch (InlineException e) {
+            throw throwCompilationException(nodeAndSmap, e, false);
+        }
         catch (Exception e) {
-            boolean generateNodeText = !(e instanceof InlineException);
-            PsiElement element = DescriptorToSourceUtils.descriptorToDeclaration(this.codegen.getContext().getContextDescriptor());
-            throw new CompilationException("Couldn't inline method call '" +
-                                       functionDescriptor.getName() +
-                                       "' into \n" + (element != null ? element.getText() : "null psi element " + this.codegen.getContext().getContextDescriptor()) +
-                                       (generateNodeText ? ("\ncause: " + InlineCodegenUtil.getNodeText(nodeAndSmap != null ? nodeAndSmap.getNode(): null)) : ""),
-                                       e, callElement);
+            throw throwCompilationException(nodeAndSmap, e, true);
         }
         finally {
             state.getInlineCycleReporter().exitFromInliningOf(resolvedCall);
         }
     }
 
-    protected void generateStub(@Nullable ResolvedCall<?> resolvedCall, @NotNull ExpressionCodegen codegen) {
+    @NotNull
+    private CompilationException throwCompilationException(
+            @Nullable SMAPAndMethodNode nodeAndSmap, @NotNull Exception e, boolean generateNodeText
+    ) {
+        CallableMemberDescriptor contextDescriptor = codegen.getContext().getContextDescriptor();
+        PsiElement element = DescriptorToSourceUtils.descriptorToDeclaration(contextDescriptor);
+        MethodNode node = nodeAndSmap != null ? nodeAndSmap.getNode() : null;
+        throw new CompilationException(
+                "Couldn't inline method call '" + functionDescriptor.getName() + "' into\n" +
+                contextDescriptor + "\n" +
+                (element != null ? element.getText() : "<no source>") +
+                (generateNodeText ? ("\nCause: " + InlineCodegenUtil.getNodeText(node)) : ""),
+                e, callElement
+        );
+    }
+
+    private void generateStub(@Nullable ResolvedCall<?> resolvedCall, @NotNull ExpressionCodegen codegen) {
         leaveTemps();
         assert resolvedCall != null;
         String message = "Call is part of inline cycle: " + resolvedCall.getCall().getCallElement().getText();
@@ -176,25 +195,19 @@ public class InlineCodegen extends CallGenerator {
         codegen.markLineNumberAfterInlineIfNeeded();
     }
 
-    @NotNull
-    private SMAPAndMethodNode createMethodNode(boolean callDefault) throws IOException {
-        return createMethodNode(functionDescriptor, jvmSignature, codegen, context, callDefault, state);
-    }
-
     @NotNull
     static SMAPAndMethodNode createMethodNode(
             @NotNull final FunctionDescriptor functionDescriptor,
             @NotNull JvmMethodSignature jvmSignature,
             @NotNull ExpressionCodegen codegen,
             @NotNull CodegenContext context,
-            boolean callDefault,
-            @NotNull final GenerationState state
+            boolean callDefault
     ) {
-
-        KotlinTypeMapper typeMapper = state.getTypeMapper();
-        final Method asmMethod = callDefault
-                           ? typeMapper.mapDefaultMethod(functionDescriptor, context.getContextKind())
-                           : jvmSignature.getAsmMethod();
+        final GenerationState state = codegen.getState();
+        final Method asmMethod =
+                callDefault
+                ? state.getTypeMapper().mapDefaultMethod(functionDescriptor, context.getContextKind())
+                : jvmSignature.getAsmMethod();
 
         MethodId methodId = new MethodId(DescriptorUtils.getFqNameSafe(functionDescriptor.getContainingDeclaration()), asmMethod);
 
@@ -202,15 +215,18 @@ public class InlineCodegen extends CallGenerator {
             return doCreateMethodNodeFromSource(functionDescriptor, jvmSignature, codegen, context, callDefault, state, asmMethod);
         }
 
-        SMAPAndMethodNode resultInCache =
-                InlineCacheKt
-                        .getOrPut(state.getInlineCache().getMethodNodeById(), methodId, new Function0<SMAPAndMethodNode>() {
-                            @Override
-                            public SMAPAndMethodNode invoke() {
-                                return doCreateMethodNodeFromCompiled(functionDescriptor,
-                                                                      state, asmMethod);
-                            }
-                        });
+        SMAPAndMethodNode resultInCache = InlineCacheKt.getOrPut(
+                state.getInlineCache().getMethodNodeById(), methodId, new Function0<SMAPAndMethodNode>() {
+                    @Override
+                    public SMAPAndMethodNode invoke() {
+                        SMAPAndMethodNode result = doCreateMethodNodeFromCompiled(functionDescriptor, state, asmMethod);
+                        if (result == null) {
+                            throw new IllegalStateException("Couldn't obtain compiled function body for " + functionDescriptor);
+                        }
+                        return result;
+                    }
+                }
+        );
 
         return resultInCache.copyWithNewNode(cloneMethodNode(resultInCache.getNode()));
     }
@@ -220,12 +236,13 @@ public class InlineCodegen extends CallGenerator {
         methodNode.instructions.resetLabels();
         MethodNode result = new MethodNode(
                 API, methodNode.access, methodNode.name, methodNode.desc, methodNode.signature,
-                methodNode.exceptions.toArray(ArrayUtil.EMPTY_STRING_ARRAY));
+                ArrayUtil.toStringArray(methodNode.exceptions)
+        );
         methodNode.accept(result);
         return result;
     }
 
-    @NotNull
+    @Nullable
     private static SMAPAndMethodNode doCreateMethodNodeFromCompiled(
             @NotNull FunctionDescriptor functionDescriptor,
             @NotNull final GenerationState state,
@@ -233,7 +250,6 @@ public class InlineCodegen extends CallGenerator {
     ) {
         KotlinTypeMapper typeMapper = state.getTypeMapper();
 
-        SMAPAndMethodNode nodeAndSMAP;
         if (isBuiltInArrayIntrinsic(functionDescriptor)) {
             ClassId classId = IntrinsicArrayConstructorsKt.getClassId();
             byte[] bytes = InlineCacheKt.getOrPut(state.getInlineCache().getClassBytes(), classId, new Function0<byte[]>() {
@@ -243,24 +259,13 @@ public class InlineCodegen extends CallGenerator {
                 }
             });
 
-            nodeAndSMAP = InlineCodegenUtil.getMethodNode(
-                    bytes,
-                    asmMethod.getName(),
-                    asmMethod.getDescriptor(),
-                    classId
-            );
-
-            if (nodeAndSMAP == null) {
-                throw new IllegalStateException("Couldn't obtain array constructor body for " + descriptorName(functionDescriptor));
-            }
-
-            return nodeAndSMAP;
+            return InlineCodegenUtil.getMethodNode(bytes, asmMethod.getName(), asmMethod.getDescriptor(), classId);
         }
 
-        assert functionDescriptor instanceof DeserializedSimpleFunctionDescriptor;
+        assert functionDescriptor instanceof DeserializedSimpleFunctionDescriptor : "Not a deserialized function: " + functionDescriptor;
 
-        KotlinTypeMapper.ContainingClassesInfo containingClasses = typeMapper.getContainingClassesForDeserializedCallable(
-                (DeserializedSimpleFunctionDescriptor) functionDescriptor);
+        KotlinTypeMapper.ContainingClassesInfo containingClasses =
+                typeMapper.getContainingClassesForDeserializedCallable((DeserializedSimpleFunctionDescriptor) functionDescriptor);
 
         final ClassId containerId = containingClasses.getImplClassId();
 
@@ -280,15 +285,7 @@ public class InlineCodegen extends CallGenerator {
             }
         });
 
-        nodeAndSMAP = InlineCodegenUtil.getMethodNode(
-                bytes, asmMethod.getName(), asmMethod.getDescriptor(), containerId
-        );
-
-        if (nodeAndSMAP == null) {
-            throw new IllegalStateException("Couldn't obtain compiled function body for " + descriptorName(functionDescriptor));
-        }
-
-        return nodeAndSMAP;
+        return InlineCodegenUtil.getMethodNode(bytes, asmMethod.getName(), asmMethod.getDescriptor(), containerId);
     }
 
     @NotNull
@@ -304,27 +301,31 @@ public class InlineCodegen extends CallGenerator {
         PsiElement element = DescriptorToSourceUtils.descriptorToDeclaration(functionDescriptor);
 
         if (!(element instanceof KtNamedFunction)) {
-            throw new IllegalStateException("Couldn't find declaration for function " + descriptorName(functionDescriptor));
+            throw new IllegalStateException("Couldn't find declaration for function " + functionDescriptor);
         }
         KtNamedFunction inliningFunction = (KtNamedFunction) element;
 
-        MethodNode node = new MethodNode(InlineCodegenUtil.API,
-                                       getMethodAsmFlags(functionDescriptor, context.getContextKind()) | (callDefault ? Opcodes.ACC_STATIC : 0),
-                                       asmMethod.getName(),
-                                       asmMethod.getDescriptor(),
-                                       null,
-                                       null);
+        MethodNode node = new MethodNode(
+                InlineCodegenUtil.API,
+                getMethodAsmFlags(functionDescriptor, context.getContextKind()) | (callDefault ? Opcodes.ACC_STATIC : 0),
+                asmMethod.getName(),
+                asmMethod.getDescriptor(),
+                null, null
+        );
 
         //for maxLocals calculation
         MethodVisitor maxCalcAdapter = InlineCodegenUtil.wrapWithMaxLocalCalc(node);
-        MethodContext methodContext = context.getParentContext().intoFunction(functionDescriptor);
+        CodegenContext parentContext = context.getParentContext();
+        assert parentContext != null : "Context has no parent: " + context;
+        MethodContext methodContext = parentContext.intoFunction(functionDescriptor);
 
         SMAP smap;
         if (callDefault) {
             Type implementationOwner = state.getTypeMapper().mapImplementationOwner(functionDescriptor);
-            FakeMemberCodegen parentCodegen = new FakeMemberCodegen(codegen.getParentCodegen(), inliningFunction,
-                                                                    (FieldOwnerContext) methodContext.getParentContext(),
-                                                                    implementationOwner.getInternalName());
+            FakeMemberCodegen parentCodegen = new FakeMemberCodegen(
+                    codegen.getParentCodegen(), inliningFunction, (FieldOwnerContext) methodContext.getParentContext(),
+                    implementationOwner.getInternalName()
+            );
             FunctionCodegen.generateDefaultImplBody(
                     methodContext, functionDescriptor, maxCalcAdapter, DefaultParameterValueLoader.DEFAULT,
                     inliningFunction, parentCodegen, asmMethod
@@ -332,7 +333,7 @@ public class InlineCodegen extends CallGenerator {
             smap = createSMAPWithDefaultMapping(inliningFunction, parentCodegen.getOrCreateSourceMapper().getResultMappings());
         }
         else {
-            smap = generateMethodBody(maxCalcAdapter, functionDescriptor, methodContext, inliningFunction, jvmSignature, false, codegen, state);
+            smap = generateMethodBody(maxCalcAdapter, functionDescriptor, methodContext, inliningFunction, jvmSignature, false, codegen);
         }
         maxCalcAdapter.visitMaxs(-1, -1);
         maxCalcAdapter.visitEnd();
@@ -347,7 +348,8 @@ public class InlineCodegen extends CallGenerator {
                functionDescriptor.getContainingDeclaration() instanceof BuiltInsPackageFragment;
     }
 
-    private InlineResult inlineCall(SMAPAndMethodNode nodeAndSmap) {
+    @NotNull
+    private InlineResult inlineCall(@NotNull SMAPAndMethodNode nodeAndSmap) {
         DefaultSourceMapper defaultSourceMapper = codegen.getParentCodegen().getOrCreateSourceMapper();
         defaultSourceMapper.setCallSiteMarker(new CallSiteMarker(codegen.getLastLineNumber()));
         MethodNode node = nodeAndSmap.getNode();
@@ -363,7 +365,8 @@ public class InlineCodegen extends CallGenerator {
 
         InliningContext info = new RootInliningContext(
                 expressionMap, state, codegen.getInlineNameGenerator().subGenerator(jvmSignature.getAsmMethod().getName()),
-                codegen.getContext(), callElement, getInlineCallSiteInfo(), reifiedTypeInliner, typeParameterMappings);
+                callElement, getInlineCallSiteInfo(), reifiedTypeInliner, typeParameterMappings
+        );
 
         MethodInliner inliner = new MethodInliner(
                 node, parameters, info, new FieldRemapper(null, null, parameters), isSameModule,
@@ -374,7 +377,6 @@ public class InlineCodegen extends CallGenerator {
 
         LocalVarRemapper remapper = new LocalVarRemapper(parameters, initialFrameSize);
 
-
         MethodNode adapter = InlineCodegenUtil.createEmptyMethodNode();
         //hack to keep linenumber info, otherwise jdi will skip begin of linenumber chain
         adapter.visitInsn(Opcodes.NOP);
@@ -392,7 +394,9 @@ public class InlineCodegen extends CallGenerator {
         };
 
         List<MethodInliner.PointForExternalFinallyBlocks> infos = MethodInliner.processReturns(adapter, labelOwner, true, null);
-        generateAndInsertFinallyBlocks(adapter, infos, ((StackValue.Local)remapper.remap(parameters.getArgsSizeOnStack() + 1).value).index);
+        generateAndInsertFinallyBlocks(
+                adapter, infos, ((StackValue.Local) remapper.remap(parameters.getArgsSizeOnStack() + 1).value).index
+        );
         removeStaticInitializationTrigger(adapter);
         removeFinallyMarkers(adapter);
 
@@ -405,7 +409,7 @@ public class InlineCodegen extends CallGenerator {
         return result;
     }
 
-    private static void removeStaticInitializationTrigger(MethodNode methodNode) {
+    private static void removeStaticInitializationTrigger(@NotNull MethodNode methodNode) {
         InsnList insnList = methodNode.instructions;
         AbstractInsnNode insn = insnList.getFirst();
         while (insn != null) {
@@ -420,6 +424,7 @@ public class InlineCodegen extends CallGenerator {
         }
     }
 
+    @NotNull
     private InlineCallSiteInfo getInlineCallSiteInfo() {
         MethodContext context = codegen.getContext();
         MemberCodegen<?> parentCodegen = codegen.getParentCodegen();
@@ -433,7 +438,9 @@ public class InlineCodegen extends CallGenerator {
         }
 
         JvmMethodSignature signature = typeMapper.mapSignatureSkipGeneric(context.getFunctionDescriptor(), context.getContextKind());
-        return new InlineCallSiteInfo(parentCodegen.getClassName(), signature.getAsmMethod().getName(), signature.getAsmMethod().getDescriptor());
+        return new InlineCallSiteInfo(
+                parentCodegen.getClassName(), signature.getAsmMethod().getName(), signature.getAsmMethod().getDescriptor()
+        );
     }
 
     private void generateClosuresBodies() {
@@ -442,25 +449,29 @@ public class InlineCodegen extends CallGenerator {
         }
     }
 
-    private SMAPAndMethodNode generateLambdaBody(LambdaInfo info) {
+    @NotNull
+    private SMAPAndMethodNode generateLambdaBody(@NotNull LambdaInfo info) {
         KtExpression declaration = info.getFunctionWithBodyOrCallableReference();
         FunctionDescriptor descriptor = info.getFunctionDescriptor();
 
-        MethodContext parentContext = codegen.getContext();
-
-        MethodContext context = parentContext.intoClosure(descriptor, codegen, typeMapper).intoInlinedLambda(descriptor, info.isCrossInline);
+        MethodContext context =
+                codegen.getContext().intoClosure(descriptor, codegen, typeMapper).intoInlinedLambda(descriptor, info.isCrossInline);
 
         JvmMethodSignature jvmMethodSignature = typeMapper.mapSignatureSkipGeneric(descriptor);
         Method asmMethod = jvmMethodSignature.getAsmMethod();
-        MethodNode methodNode = new MethodNode(InlineCodegenUtil.API, getMethodAsmFlags(descriptor, context.getContextKind()), asmMethod.getName(), asmMethod.getDescriptor(), null, null);
+        MethodNode methodNode = new MethodNode(
+                InlineCodegenUtil.API, getMethodAsmFlags(descriptor, context.getContextKind()),
+                asmMethod.getName(), asmMethod.getDescriptor(), null, null
+        );
 
         MethodVisitor adapter = InlineCodegenUtil.wrapWithMaxLocalCalc(methodNode);
 
-        SMAP smap = generateMethodBody(adapter, descriptor, context, declaration, jvmMethodSignature, true, codegen, state);
+        SMAP smap = generateMethodBody(adapter, descriptor, context, declaration, jvmMethodSignature, true, codegen);
         adapter.visitMaxs(-1, -1);
         return new SMAPAndMethodNode(methodNode, smap);
     }
 
+    @NotNull
     private static SMAP generateMethodBody(
             @NotNull MethodVisitor adapter,
             @NotNull FunctionDescriptor descriptor,
@@ -468,32 +479,29 @@ public class InlineCodegen extends CallGenerator {
             @NotNull KtExpression expression,
             @NotNull JvmMethodSignature jvmMethodSignature,
             boolean isLambda,
-            @NotNull ExpressionCodegen codegen,
-            @NotNull GenerationState state
-
+            @NotNull ExpressionCodegen codegen
     ) {
-        FakeMemberCodegen parentCodegen =
-                new FakeMemberCodegen(codegen.getParentCodegen(), expression,
-                                      (FieldOwnerContext) context.getParentContext(),
-                                      isLambda ? codegen.getParentCodegen().getClassName()
-                                               : state.getTypeMapper().mapImplementationOwner(descriptor).getInternalName());
+        GenerationState state = codegen.getState();
+
+        // Wrapping for preventing marking actual parent codegen as containing reified markers
+        FakeMemberCodegen parentCodegen = new FakeMemberCodegen(
+                codegen.getParentCodegen(), expression, (FieldOwnerContext) context.getParentContext(),
+                isLambda ? codegen.getParentCodegen().getClassName()
+                         : state.getTypeMapper().mapImplementationOwner(descriptor).getInternalName()
+        );
 
         FunctionGenerationStrategy strategy =
                 expression instanceof KtCallableReferenceExpression ?
                 new FunctionReferenceGenerationStrategy(
                         state,
                         descriptor,
-                        CallUtilKt.getResolvedCallWithAssert(((KtCallableReferenceExpression) expression).getCallableReference(),
-                                                             codegen.getBindingContext()
-                        )) :
+                        CallUtilKt.getResolvedCallWithAssert(
+                                ((KtCallableReferenceExpression) expression).getCallableReference(), codegen.getBindingContext()
+                        )
+                ) :
                 new FunctionGenerationStrategy.FunctionDefault(state, descriptor, (KtDeclarationWithBody) expression);
 
-        FunctionCodegen.generateMethodBody(
-                adapter, descriptor, context, jvmMethodSignature,
-                strategy,
-                // Wrapping for preventing marking actual parent codegen as containing reifier markers
-                parentCodegen
-        );
+        FunctionCodegen.generateMethodBody(adapter, descriptor, context, jvmMethodSignature, strategy, parentCodegen);
 
         if (isLambda) {
             codegen.propagateChildReifiedTypeParametersUsages(parentCodegen.getReifiedTypeParametersUsages());
@@ -514,13 +522,18 @@ public class InlineCodegen extends CallGenerator {
     }
 
     private static class FakeMemberCodegen extends MemberCodegen {
+        private final MemberCodegen delegate;
+        private final String className;
 
-        @NotNull final MemberCodegen delegate;
-        @NotNull private final String className;
-
-        public FakeMemberCodegen(@NotNull MemberCodegen wrapped, @NotNull KtElement declaration, @NotNull FieldOwnerContext codegenContext, @NotNull String className) {
+        @SuppressWarnings("unchecked")
+        public FakeMemberCodegen(
+                @NotNull MemberCodegen wrapped,
+                @NotNull KtElement declaration,
+                @NotNull FieldOwnerContext codegenContext,
+                @NotNull String className
+        ) {
             super(wrapped, declaration, codegenContext);
-            delegate = wrapped;
+            this.delegate = wrapped;
             this.className = className;
         }
 
@@ -554,11 +567,7 @@ public class InlineCodegen extends CallGenerator {
     }
 
     @Override
-    public void afterParameterPut(
-            @NotNull Type type,
-            @Nullable StackValue stackValue,
-            int parameterIndex
-    ) {
+    public void afterParameterPut(@NotNull Type type, @Nullable StackValue stackValue, int parameterIndex) {
         putArgumentOrCapturedToLocalVal(type, stackValue, -1, parameterIndex);
     }
 
@@ -588,11 +597,7 @@ public class InlineCodegen extends CallGenerator {
     }
 
     /*descriptor is null for captured vars*/
-    public static boolean shouldPutValue(
-            @NotNull Type type,
-            @Nullable StackValue stackValue
-    ) {
-
+    private static boolean shouldPutValue(@NotNull Type type, @Nullable StackValue stackValue) {
         if (stackValue == null) {
             //default or vararg
             return true;
@@ -626,7 +631,7 @@ public class InlineCodegen extends CallGenerator {
         return true;
     }
 
-    private void recordParameterValueInLocalVal(ParameterInfo... infos) {
+    private void recordParameterValueInLocalVal(@NotNull ParameterInfo... infos) {
         int[] index = new int[infos.length];
         for (int i = 0; i < infos.length; i++) {
             ParameterInfo info = infos[i];
@@ -650,34 +655,33 @@ public class InlineCodegen extends CallGenerator {
     @Override
     public void putHiddenParams() {
         if ((getMethodAsmFlags(functionDescriptor, context.getContextKind()) & Opcodes.ACC_STATIC) == 0) {
-            invocationParamBuilder.addNextParameter(AsmTypes.OBJECT_TYPE, false, null);
+            invocationParamBuilder.addNextParameter(AsmTypes.OBJECT_TYPE, false);
         }
 
         for (JvmMethodParameterSignature param : jvmSignature.getValueParameters()) {
             if (param.getKind() == JvmMethodParameterKind.VALUE) {
                 break;
             }
-            invocationParamBuilder.addNextParameter(param.getAsmType(), false, null);
+            invocationParamBuilder.addNextParameter(param.getAsmType(), false);
         }
 
-        invocationParamBuilder.markValueParametesStart();
+        invocationParamBuilder.markValueParametersStart();
         List<ParameterInfo> hiddenParameters = invocationParamBuilder.buildParameters().getReal();
         recordParameterValueInLocalVal(hiddenParameters.toArray(new ParameterInfo[hiddenParameters.size()]));
     }
 
-    public void leaveTemps() {
-        FrameMap frameMap = codegen.getFrameMap();
+    private void leaveTemps() {
         List<ParameterInfo> infos = invocationParamBuilder.listAllParams();
         for (ListIterator<? extends ParameterInfo> iterator = infos.listIterator(infos.size()); iterator.hasPrevious(); ) {
             ParameterInfo param = iterator.previous();
             if (!param.isSkippedOrRemapped()) {
-                frameMap.leaveTemp(param.type);
+                codegen.getFrameMap().leaveTemp(param.type);
             }
         }
     }
 
     /*lambda or callable reference*/
-    public boolean isInliningParameter(KtExpression expression, ValueParameterDescriptor valueParameterDescriptor) {
+    private boolean isInliningParameter(@NotNull KtExpression expression, @NotNull ValueParameterDescriptor valueParameterDescriptor) {
         //TODO deparenthisise typed
         KtExpression deparenthesized = KtPsiUtil.deparenthesize(expression);
 
@@ -691,17 +695,16 @@ public class InlineCodegen extends CallGenerator {
                isInlinableParameterExpression(deparenthesized);
     }
 
-    protected static boolean isInlinableParameterExpression(KtExpression deparenthesized) {
+    private static boolean isInlinableParameterExpression(@Nullable KtExpression deparenthesized) {
         return deparenthesized instanceof KtLambdaExpression ||
                deparenthesized instanceof KtNamedFunction ||
                deparenthesized instanceof KtCallableReferenceExpression;
     }
 
-    public void rememberClosure(KtExpression expression, Type type, ValueParameterDescriptor parameter) {
+    private void rememberClosure(@NotNull KtExpression expression, @NotNull Type type, @NotNull ValueParameterDescriptor parameter) {
         KtExpression lambda = KtPsiUtil.deparenthesize(expression);
         assert isInlinableParameterExpression(lambda) : "Couldn't find inline expression in " + expression.getText();
 
-
         LambdaInfo info = new LambdaInfo(lambda, typeMapper, parameter.isCrossinline());
 
         ParameterInfo closureInfo = invocationParamBuilder.addNextValueParameter(type, true, null, parameter.getIndex());
@@ -710,7 +713,7 @@ public class InlineCodegen extends CallGenerator {
     }
 
     @NotNull
-    protected static Set<String> getDeclarationLabels(@Nullable PsiElement lambdaOrFun, @NotNull DeclarationDescriptor descriptor) {
+    public static Set<String> getDeclarationLabels(@Nullable PsiElement lambdaOrFun, @NotNull DeclarationDescriptor descriptor) {
         Set<String> result = new HashSet<String>();
 
         if (lambdaOrFun != null) {
@@ -737,18 +740,25 @@ public class InlineCodegen extends CallGenerator {
         activeLambda = null;
     }
 
-    public static CodegenContext getContext(@NotNull DeclarationDescriptor descriptor, @NotNull GenerationState state, @Nullable KtFile sourceFile) {
+    @NotNull
+    public static CodegenContext getContext(
+            @NotNull DeclarationDescriptor descriptor, @NotNull GenerationState state, @Nullable KtFile sourceFile
+    ) {
         if (descriptor instanceof PackageFragmentDescriptor) {
             return new PackageContext((PackageFragmentDescriptor) descriptor, state.getRootContext(), null, sourceFile);
         }
 
-        CodegenContext parent = getContext(descriptor.getContainingDeclaration(), state, sourceFile);
+        DeclarationDescriptor container = descriptor.getContainingDeclaration();
+        assert container != null : "No container for descriptor: " + descriptor;
+        CodegenContext parent = getContext(container, state, sourceFile);
 
         if (descriptor instanceof ScriptDescriptor) {
             List<ScriptDescriptor> earlierScripts = state.getReplSpecific().getEarlierScriptsForReplInterpreter();
-            return parent.intoScript((ScriptDescriptor) descriptor,
-                                     earlierScripts == null ? Collections.emptyList() : earlierScripts,
-                                     (ClassDescriptor) descriptor, state.getTypeMapper());
+            return parent.intoScript(
+                    (ScriptDescriptor) descriptor,
+                    earlierScripts == null ? Collections.emptyList() : earlierScripts,
+                    (ClassDescriptor) descriptor, state.getTypeMapper()
+            );
         }
         else if (descriptor instanceof ClassDescriptor) {
             OwnerKind kind = DescriptorUtils.isInterface(descriptor) ? OwnerKind.DEFAULT_IMPLS : OwnerKind.IMPLEMENTATION;
@@ -758,11 +768,7 @@ public class InlineCodegen extends CallGenerator {
             return parent.intoFunction((FunctionDescriptor) descriptor);
         }
 
-        throw new IllegalStateException("Couldn't build context for " + descriptorName(descriptor));
-    }
-
-    private static String descriptorName(DeclarationDescriptor descriptor) {
-        return DescriptorRenderer.SHORT_NAMES_IN_TYPES.render(descriptor);
+        throw new IllegalStateException("Couldn't build context for " + descriptor);
     }
 
     @Override
@@ -782,18 +788,11 @@ public class InlineCodegen extends CallGenerator {
     }
 
     @Override
-    public void putValueIfNeeded(
-            @NotNull Type parameterType,
-            @NotNull StackValue value
-    ) {
+    public void putValueIfNeeded(@NotNull Type parameterType, @NotNull StackValue value) {
         putValueIfNeeded(parameterType, value, -1);
     }
 
-    private void putValueIfNeeded(
-            @NotNull Type parameterType,
-            @NotNull StackValue value,
-            int index
-    ) {
+    private void putValueIfNeeded(@NotNull Type parameterType, @NotNull StackValue value, int index) {
         if (shouldPutValue(parameterType, value)) {
             value.put(parameterType, codegen.v);
         }
@@ -801,17 +800,14 @@ public class InlineCodegen extends CallGenerator {
     }
 
     @Override
-    public void putCapturedValueOnStack(
-            @NotNull StackValue stackValue, @NotNull Type valueType, int paramIndex
-    ) {
+    public void putCapturedValueOnStack(@NotNull StackValue stackValue, @NotNull Type valueType, int paramIndex) {
         if (shouldPutValue(stackValue.type, stackValue)) {
             stackValue.put(stackValue.type, codegen.v);
         }
         putArgumentOrCapturedToLocalVal(stackValue.type, stackValue, paramIndex, paramIndex);
     }
 
-
-    public void generateAndInsertFinallyBlocks(
+    private void generateAndInsertFinallyBlocks(
             @NotNull MethodNode intoNode,
             @NotNull List<MethodInliner.PointForExternalFinallyBlocks> insertPoints,
             int offsetForFinallyLocalVar
@@ -879,7 +875,7 @@ public class InlineCodegen extends CallGenerator {
         //processor.substituteLocalVarTable(intoNode);
     }
 
-    public void removeFinallyMarkers(@NotNull MethodNode intoNode) {
+    private void removeFinallyMarkers(@NotNull MethodNode intoNode) {
         if (InlineCodegenUtil.isFinallyMarkerRequired(codegen.getContext())) return;
 
         InsnList instructions = intoNode.instructions;
@@ -898,6 +894,7 @@ public class InlineCodegen extends CallGenerator {
         }
     }
 
+    @NotNull
     public static SourceMapper createNestedSourceMapper(@NotNull SMAPAndMethodNode nodeAndSmap, @NotNull SourceMapper parent) {
         return new NestedSourceMapper(parent, nodeAndSmap.getSortedRanges(), nodeAndSmap.getClassSMAP().getSourceInfo());
     }
@@ -912,7 +909,8 @@ public class InlineCodegen extends CallGenerator {
         if (incrementalCache == null) return;
         String classFilePath = InlineCodegenUtilsKt.getClassFilePath(sourceDescriptor, state.getTypeMapper(), incrementalCache);
         String sourceFilePath = InlineCodegenUtilsKt.getSourceFilePath(targetDescriptor);
-        incrementalCache.registerInline(classFilePath, jvmSignature.toString(), sourceFilePath);
+        Method method = jvmSignature.getAsmMethod();
+        incrementalCache.registerInline(classFilePath, method.getName() + method.getDescriptor(), sourceFilePath);
     }
 
     @Override

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

@@ -65,7 +65,7 @@ class InlineCodegenForDefaultBody(
     }
 
     override fun genCallInner(callableMethod: Callable, resolvedCall: ResolvedCall<*>?, callDefault: Boolean, codegen: ExpressionCodegen) {
-        val nodeAndSmap = InlineCodegen.createMethodNode(functionDescriptor, jvmSignature, codegen, context, callDefault, state)
+        val nodeAndSmap = InlineCodegen.createMethodNode(functionDescriptor, jvmSignature, codegen, context, callDefault)
         val childSourceMapper = InlineCodegen.createNestedSourceMapper(nodeAndSmap, sourceMapper)
 
         val node = nodeAndSmap.node
@@ -111,4 +111,4 @@ class InlineCodegenForDefaultBody(
     override fun reorderArgumentsIfNeeded(actualArgsWithDeclIndex: List<ArgumentAndDeclIndex>, valueParameterTypes: List<Type>) {
         throw UnsupportedOperationException("Shouldn't be called")
     }
-}
+}

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

@@ -17,12 +17,10 @@
 package org.jetbrains.kotlin.codegen.inline;
 
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import kotlin.text.StringsKt;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import org.jetbrains.annotations.TestOnly;
 import org.jetbrains.kotlin.backend.common.output.OutputFile;
 import org.jetbrains.kotlin.codegen.MemberCodegen;
 import org.jetbrains.kotlin.codegen.binding.CodegenBinding;
@@ -31,7 +29,6 @@ import org.jetbrains.kotlin.codegen.context.CodegenContextUtil;
 import org.jetbrains.kotlin.codegen.context.InlineLambdaContext;
 import org.jetbrains.kotlin.codegen.context.MethodContext;
 import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicArrayConstructorsKt;
-import org.jetbrains.kotlin.codegen.optimization.common.UtilKt;
 import org.jetbrains.kotlin.codegen.state.GenerationState;
 import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
 import org.jetbrains.kotlin.codegen.when.WhenByEnumsMapping;
@@ -63,19 +60,19 @@ public class InlineCodegenUtil {
     public static final boolean GENERATE_SMAP = true;
     public static final int API = Opcodes.ASM5;
 
-    public static final String CAPTURED_FIELD_PREFIX = "$";
-    public static final String NON_CAPTURED_FIELD_PREFIX = "$$";
+    private static final String CAPTURED_FIELD_PREFIX = "$";
+    private static final String NON_CAPTURED_FIELD_PREFIX = "$$";
     public static final String THIS$0 = "this$0";
     public static final String THIS = "this";
-    public static final String RECEIVER$0 = "receiver$0";
-    public static final String NON_LOCAL_RETURN = "$$$$$NON_LOCAL_RETURN$$$$$";
+    private static final String RECEIVER$0 = "receiver$0";
+    private static final String NON_LOCAL_RETURN = "$$$$$NON_LOCAL_RETURN$$$$$";
     public static final String FIRST_FUN_LABEL = "$$$$$ROOT$$$$$";
     public static final String NUMBERED_FUNCTION_PREFIX = "kotlin/jvm/functions/Function";
-    public static final String INLINE_MARKER_CLASS_NAME = "kotlin/jvm/internal/InlineMarker";
-    public static final String INLINE_MARKER_BEFORE_METHOD_NAME = "beforeInlineCall";
-    public static final String INLINE_MARKER_AFTER_METHOD_NAME = "afterInlineCall";
-    public static final String INLINE_MARKER_FINALLY_START = "finallyStart";
-    public static final String INLINE_MARKER_FINALLY_END = "finallyEnd";
+    private static final String INLINE_MARKER_CLASS_NAME = "kotlin/jvm/internal/InlineMarker";
+    private static final String INLINE_MARKER_BEFORE_METHOD_NAME = "beforeInlineCall";
+    private static final String INLINE_MARKER_AFTER_METHOD_NAME = "afterInlineCall";
+    private static final String INLINE_MARKER_FINALLY_START = "finallyStart";
+    private static final String INLINE_MARKER_FINALLY_END = "finallyEnd";
     public static final String INLINE_TRANSFORMATION_SUFFIX = "$inlined";
     public static final String INLINE_FUN_THIS_0_SUFFIX = "$inline_fun";
     public static final String INLINE_FUN_VAR_SUFFIX = "$iv";
@@ -93,6 +90,7 @@ public class InlineCodegenUtil {
         final int[] lines = new int[2];
         lines[0] = Integer.MAX_VALUE;
         lines[1] = Integer.MIN_VALUE;
+        //noinspection PointlessBitwiseExpression
         cr.accept(new ClassVisitor(API) {
             @Override
             public void visit(int version, int access, @NotNull String name, String signature, String superName, String[] interfaces) {
@@ -174,7 +172,7 @@ public class InlineCodegenUtil {
     }
 
     @Nullable
-    public static VirtualFile findVirtualFileImprecise(@NotNull GenerationState state, @NotNull String internalClassName) {
+    private static VirtualFile findVirtualFileImprecise(@NotNull GenerationState state, @NotNull String internalClassName) {
         FqName packageFqName = JvmClassName.byInternalName(internalClassName).getPackageFqName();
         String classNameWithDollars = StringsKt.substringAfterLast(internalClassName, "/", internalClassName);
         //TODO: we cannot construct proper classId at this point, we need to read InnerClasses info from class file
@@ -182,6 +180,7 @@ public class InlineCodegenUtil {
         return findVirtualFile(state, new ClassId(packageFqName, Name.identifier(classNameWithDollars)));
     }
 
+    @NotNull
     public static String getInlineName(
             @NotNull CodegenContext codegenContext,
             @NotNull KotlinTypeMapper typeMapper,
@@ -190,6 +189,7 @@ public class InlineCodegenUtil {
         return getInlineName(codegenContext, codegenContext.getContextDescriptor(), typeMapper, fileClassesManager);
     }
 
+    @NotNull
     private static String getInlineName(
             @NotNull CodegenContext codegenContext,
             @NotNull DeclarationDescriptor currentDescriptor,
@@ -197,21 +197,24 @@ public class InlineCodegenUtil {
             @NotNull JvmFileClassesProvider fileClassesProvider
     ) {
         if (currentDescriptor instanceof PackageFragmentDescriptor) {
-            PsiFile file = getContainingFile(codegenContext);
+            PsiFile file = DescriptorToSourceUtils.getContainingFile(codegenContext.getContextDescriptor());
 
             Type implementationOwnerType;
             if (file == null) {
                 implementationOwnerType = CodegenContextUtil.getImplementationOwnerClassType(codegenContext);
-            } else {
+            }
+            else {
                 implementationOwnerType = FileClasses.getFileClassType(fileClassesProvider, (KtFile) file);
             }
 
             if (implementationOwnerType == null) {
                 DeclarationDescriptor contextDescriptor = codegenContext.getContextDescriptor();
                 //noinspection ConstantConditions
-                throw new RuntimeException("Couldn't find declaration for " +
-                                           contextDescriptor.getContainingDeclaration().getName() + "." + contextDescriptor.getName() +
-                                           "; context: " + codegenContext);
+                throw new RuntimeException(
+                        "Couldn't find declaration for " +
+                        contextDescriptor.getContainingDeclaration().getName() + "." + contextDescriptor.getName() +
+                        "; context: " + codegenContext
+                );
             }
 
             return implementationOwnerType.getInternalName();
@@ -219,12 +222,12 @@ public class InlineCodegenUtil {
         else if (currentDescriptor instanceof ClassifierDescriptor) {
             Type type = typeMapper.mapType((ClassifierDescriptor) currentDescriptor);
             return type.getInternalName();
-        } else if (currentDescriptor instanceof FunctionDescriptor) {
+        }
+        else if (currentDescriptor instanceof FunctionDescriptor) {
             ClassDescriptor descriptor =
                     typeMapper.getBindingContext().get(CodegenBinding.CLASS_FOR_CALLABLE, (FunctionDescriptor) currentDescriptor);
             if (descriptor != null) {
-                Type type = typeMapper.mapType(descriptor);
-                return type.getInternalName();
+                return typeMapper.mapType(descriptor).getInternalName();
             }
         }
 
@@ -246,14 +249,15 @@ public class InlineCodegenUtil {
     }
 
     public static boolean isWhenMappingAccess(@NotNull String internalName, @NotNull String fieldName) {
-        return fieldName.startsWith(WhenByEnumsMapping.MAPPING_ARRAY_FIELD_PREFIX) && internalName.endsWith(WhenByEnumsMapping.MAPPINGS_CLASS_NAME_POSTFIX);
+        return fieldName.startsWith(WhenByEnumsMapping.MAPPING_ARRAY_FIELD_PREFIX) &&
+               internalName.endsWith(WhenByEnumsMapping.MAPPINGS_CLASS_NAME_POSTFIX);
     }
 
     public static boolean isAnonymousSingletonLoad(@NotNull String internalName, @NotNull String fieldName) {
         return JvmAbi.INSTANCE_FIELD.equals(fieldName) && isAnonymousClass(internalName);
     }
 
-    public static boolean isAnonymousClass(String internalName) {
+    public static boolean isAnonymousClass(@NotNull String internalName) {
         String shortName = getLastNamePart(internalName);
         int index = shortName.lastIndexOf("$");
 
@@ -271,16 +275,6 @@ public class InlineCodegenUtil {
         return index < 0 ? internalName : internalName.substring(index + 1);
     }
 
-    @Nullable
-    public static PsiFile getContainingFile(CodegenContext codegenContext) {
-        DeclarationDescriptor contextDescriptor = codegenContext.getContextDescriptor();
-        PsiElement psiElement = DescriptorToSourceUtils.descriptorToDeclaration(contextDescriptor);
-        if (psiElement != null) {
-            return psiElement.getContainingFile();
-        }
-        return null;
-    }
-
     @NotNull
     public static MethodVisitor wrapWithMaxLocalCalc(@NotNull MethodNode methodNode) {
         return new MaxStackFrameSizeAndLocalsCalculator(API, methodNode.access, methodNode.desc, methodNode);
@@ -317,7 +311,8 @@ public class InlineCodegenUtil {
         return getMarkedReturnLabelOrNull(returnIns) != null;
     }
 
-    public static @Nullable String getMarkedReturnLabelOrNull(@NotNull AbstractInsnNode returnInsn) {
+    @Nullable
+    public static String getMarkedReturnLabelOrNull(@NotNull AbstractInsnNode returnInsn) {
         if (!isReturnOpcode(returnInsn.getOpcode())) {
             return null;
         }
@@ -335,30 +330,33 @@ public class InlineCodegenUtil {
         iv.invokestatic(NON_LOCAL_RETURN, labelName, "()V", false);
     }
 
+    @NotNull
     public static Type getReturnType(int opcode) {
         switch (opcode) {
-            case Opcodes.RETURN: return Type.VOID_TYPE;
-            case Opcodes.IRETURN: return Type.INT_TYPE;
-            case Opcodes.DRETURN: return Type.DOUBLE_TYPE;
-            case Opcodes.FRETURN: return Type.FLOAT_TYPE;
-            case Opcodes.LRETURN: return Type.LONG_TYPE;
-            default: return AsmTypes.OBJECT_TYPE;
-        }
-    }
-
-    public static void insertNodeBefore(@NotNull MethodNode from, @NotNull InsnList instructions, @NotNull AbstractInsnNode beforeNode) {
-        ListIterator<AbstractInsnNode> iterator = from.instructions.iterator();
-        while (iterator.hasNext()) {
-            AbstractInsnNode next = iterator.next();
-            instructions.insertBefore(beforeNode, next);
+            case Opcodes.RETURN:
+                return Type.VOID_TYPE;
+            case Opcodes.IRETURN:
+                return Type.INT_TYPE;
+            case Opcodes.DRETURN:
+                return Type.DOUBLE_TYPE;
+            case Opcodes.FRETURN:
+                return Type.FLOAT_TYPE;
+            case Opcodes.LRETURN:
+                return Type.LONG_TYPE;
+            default:
+                return AsmTypes.OBJECT_TYPE;
         }
     }
 
     public static void insertNodeBefore(@NotNull MethodNode from, @NotNull MethodNode to, @NotNull AbstractInsnNode beforeNode) {
-        insertNodeBefore(from, to.instructions, beforeNode);
+        ListIterator<AbstractInsnNode> iterator = from.instructions.iterator();
+        while (iterator.hasNext()) {
+            AbstractInsnNode next = iterator.next();
+            to.instructions.insertBefore(beforeNode, next);
+        }
     }
 
-
+    @NotNull
     public static MethodNode createEmptyMethodNode() {
         return new MethodNode(API, 0, "fake", "()V", null, null);
     }
@@ -374,11 +372,7 @@ public class InlineCodegenUtil {
 
     @NotNull
     public static String getNodeText(@Nullable MethodNode node) {
-        return getNodeText(node, new Textifier());
-    }
-
-    @NotNull
-    public static String getNodeText(@Nullable MethodNode node, @NotNull Textifier textifier) {
+        Textifier textifier = new Textifier();
         if (node == null) {
             return "Not generated";
         }
@@ -386,7 +380,7 @@ public class InlineCodegenUtil {
         StringWriter sw = new StringWriter();
         textifier.print(new PrintWriter(sw));
         sw.flush();
-        return node.name + " " + node.desc + ": \n " + sw.getBuffer().toString();
+        return node.name + " " + node.desc + ":\n" + sw.getBuffer().toString();
     }
 
     @NotNull
@@ -397,13 +391,11 @@ public class InlineCodegenUtil {
             if (outputFile != null) {
                 return new ClassReader(outputFile.asByteArray());
             }
-            else {
-                VirtualFile file = findVirtualFileImprecise(state, internalName);
-                if (file == null) {
-                    throw new RuntimeException("Couldn't find virtual file for " + internalName);
-                }
+            VirtualFile file = findVirtualFileImprecise(state, internalName);
+            if (file != null) {
                 return new ClassReader(file.contentsToByteArray());
             }
+            throw new RuntimeException("Couldn't find virtual file for " + internalName);
         }
         catch (IOException e) {
             throw new RuntimeException(e);
@@ -424,10 +416,10 @@ public class InlineCodegenUtil {
     }
 
     public static boolean isFinallyMarker(@Nullable AbstractInsnNode node) {
-        return isFinallyMarker(node, INLINE_MARKER_FINALLY_END) || isFinallyMarker(node, INLINE_MARKER_FINALLY_START);
+        return node != null && (isFinallyStart(node) || isFinallyEnd(node));
     }
 
-    public static boolean isFinallyMarker(@Nullable AbstractInsnNode node, String name) {
+    private static boolean isFinallyMarker(@NotNull AbstractInsnNode node, String name) {
         if (!(node instanceof MethodInsnNode)) return false;
         MethodInsnNode method = (MethodInsnNode) node;
         return INLINE_MARKER_CLASS_NAME.equals(method.owner) && name.equals(method.name);
@@ -437,69 +429,51 @@ public class InlineCodegenUtil {
         return context.isInlineMethodContext() || context instanceof InlineLambdaContext;
     }
 
-    public static int getConstant(AbstractInsnNode ins) {
+    public static int getConstant(@NotNull AbstractInsnNode ins) {
         int opcode = ins.getOpcode();
         Integer value;
         if (opcode >= Opcodes.ICONST_0 && opcode <= Opcodes.ICONST_5) {
-            value = opcode - Opcodes.ICONST_0;
+            return opcode - Opcodes.ICONST_0;
         }
         else if (opcode == Opcodes.BIPUSH || opcode == Opcodes.SIPUSH) {
-            IntInsnNode index = (IntInsnNode) ins;
-            value = index.operand;
+            return ((IntInsnNode) ins).operand;
         }
         else {
             LdcInsnNode index = (LdcInsnNode) ins;
-            value = (Integer) index.cst;
-        }
-        return value;
-    }
-
-    public static class LabelTextifier extends Textifier {
-
-        public LabelTextifier() {
-            super(API);
-        }
-
-        @Nullable
-        @TestOnly
-        @SuppressWarnings("UnusedDeclaration")
-        public String getLabelNameIfExists(@NotNull Label l) {
-            return labelNames == null ? null : labelNames.get(l);
+            return (Integer) index.cst;
         }
     }
 
-    public static void addInlineMarker(
-            @NotNull InstructionAdapter v,
-            boolean isStartNotEnd
-    ) {
-        v.visitMethodInsn(Opcodes.INVOKESTATIC, INLINE_MARKER_CLASS_NAME,
-                          (isStartNotEnd ? INLINE_MARKER_BEFORE_METHOD_NAME : INLINE_MARKER_AFTER_METHOD_NAME),
-                          "()V", false);
+    public static void addInlineMarker(@NotNull InstructionAdapter v, boolean isStartNotEnd) {
+        v.visitMethodInsn(
+                Opcodes.INVOKESTATIC, INLINE_MARKER_CLASS_NAME,
+                isStartNotEnd ? INLINE_MARKER_BEFORE_METHOD_NAME : INLINE_MARKER_AFTER_METHOD_NAME,
+                "()V", false
+        );
     }
 
-    public static boolean isInlineMarker(AbstractInsnNode insn) {
+    public static boolean isInlineMarker(@NotNull AbstractInsnNode insn) {
         return isInlineMarker(insn, null);
     }
 
-    public static boolean isInlineMarker(AbstractInsnNode insn, String name) {
-        if (insn instanceof MethodInsnNode) {
-            MethodInsnNode methodInsnNode = (MethodInsnNode) insn;
-            return insn.getOpcode() == Opcodes.INVOKESTATIC &&
-                   methodInsnNode.owner.equals(INLINE_MARKER_CLASS_NAME) &&
-                   (name != null ? methodInsnNode.name.equals(name)
-                                 : methodInsnNode.name.equals(INLINE_MARKER_BEFORE_METHOD_NAME) ||
-                                   methodInsnNode.name.equals(INLINE_MARKER_AFTER_METHOD_NAME));
-        }
-        else {
+    private static boolean isInlineMarker(@NotNull AbstractInsnNode insn, @Nullable String name) {
+        if (!(insn instanceof MethodInsnNode)) {
             return false;
         }
+
+        MethodInsnNode methodInsnNode = (MethodInsnNode) insn;
+        return insn.getOpcode() == Opcodes.INVOKESTATIC &&
+               methodInsnNode.owner.equals(INLINE_MARKER_CLASS_NAME) &&
+               (name != null ? methodInsnNode.name.equals(name)
+                             : methodInsnNode.name.equals(INLINE_MARKER_BEFORE_METHOD_NAME) ||
+                               methodInsnNode.name.equals(INLINE_MARKER_AFTER_METHOD_NAME));
     }
 
-    public static boolean isBeforeInlineMarker(AbstractInsnNode insn) {
+    public static boolean isBeforeInlineMarker(@NotNull AbstractInsnNode insn) {
         return isInlineMarker(insn, INLINE_MARKER_BEFORE_METHOD_NAME);
     }
 
-    public static boolean isAfterInlineMarker(AbstractInsnNode insn) {
+    public static boolean isAfterInlineMarker(@NotNull AbstractInsnNode insn) {
         return isInlineMarker(insn, INLINE_MARKER_AFTER_METHOD_NAME);
     }
 
@@ -511,44 +485,27 @@ public class InlineCodegenUtil {
         return opcode >= Opcodes.ISTORE && opcode <= Opcodes.ASTORE;
     }
 
-    public static int calcMarkerShift(Parameters parameters, MethodNode node) {
+    public static int calcMarkerShift(@NotNull Parameters parameters, @NotNull MethodNode node) {
         int markerShiftTemp = getIndexAfterLastMarker(node);
         return markerShiftTemp - parameters.getRealArgsSizeOnStack() + parameters.getArgsSizeOnStack();
     }
 
-    protected static int getIndexAfterLastMarker(MethodNode node) {
-        int markerShiftTemp = -1;
+    private static int getIndexAfterLastMarker(@NotNull MethodNode node) {
+        int result = -1;
         for (LocalVariableNode variable : node.localVariables) {
             if (isFakeLocalVariableForInline(variable.name)) {
-                markerShiftTemp = Math.max(markerShiftTemp, variable.index + 1);
+                result = Math.max(result, variable.index + 1);
             }
         }
-        return markerShiftTemp;
-    }
-
-    public static boolean isFakeLocalVariableForInline(@NotNull String name) {
-        return name.startsWith(JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_FUNCTION) || name.startsWith(JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_ARGUMENT);
-    }
-
-    public static boolean isThis0(String name) {
-        return THIS$0.equals(name);
-    }
-
-    @Nullable
-    public static AbstractInsnNode getPrevMeaningful(@NotNull AbstractInsnNode node) {
-        AbstractInsnNode result = node.getPrevious();
-        while (result != null && !UtilKt.isMeaningful(result)) {
-            result = result.getPrevious();
-        }
         return result;
     }
 
-    public static void removeInterval(@NotNull MethodNode node, @NotNull AbstractInsnNode startInc, @NotNull AbstractInsnNode endInc) {
-        while (startInc != endInc) {
-            AbstractInsnNode next = startInc.getNext();
-            node.instructions.remove(startInc);
-            startInc = next;
-        }
-        node.instructions.remove(startInc);
+    public static boolean isFakeLocalVariableForInline(@NotNull String name) {
+        return name.startsWith(JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_FUNCTION) ||
+               name.startsWith(JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_ARGUMENT);
+    }
+
+    public static boolean isThis0(@NotNull String name) {
+        return THIS$0.equals(name);
     }
 }

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

@@ -24,7 +24,6 @@ import org.jetbrains.org.objectweb.asm.tree.FieldInsnNode;
 import java.util.Collection;
 
 public class InlinedLambdaRemapper extends FieldRemapper {
-
     public InlinedLambdaRemapper(
             @NotNull String lambdaInternalName,
             @NotNull FieldRemapper parent,
@@ -34,16 +33,13 @@ public class InlinedLambdaRemapper extends FieldRemapper {
     }
 
     @Override
-    public boolean canProcess(@NotNull String fieldOwner, String fieldName, boolean isFolding) {
-        return isFolding && super.canProcess(fieldOwner, fieldName, isFolding);
+    public boolean canProcess(@NotNull String fieldOwner, @NotNull String fieldName, boolean isFolding) {
+        return isFolding && super.canProcess(fieldOwner, fieldName, true);
     }
 
     @Override
     @Nullable
-    public CapturedParamInfo findField(
-            @NotNull FieldInsnNode fieldInsnNode,
-            @NotNull Collection<CapturedParamInfo> captured
-    ) {
+    public CapturedParamInfo findField(@NotNull FieldInsnNode fieldInsnNode, @NotNull Collection<CapturedParamInfo> captured) {
         return parent.findField(fieldInsnNode, captured);
     }
 
@@ -52,14 +48,12 @@ public class InlinedLambdaRemapper extends FieldRemapper {
         return true;
     }
 
-
     @Nullable
     @Override
     public StackValue getFieldForInline(@NotNull FieldInsnNode node, @Nullable StackValue prefix) {
         if (parent.isRoot()) {
             return super.getFieldForInline(node, prefix);
-        } else {
-            return parent.getFieldForInline(node, prefix);
         }
+        return parent.getFieldForInline(node, prefix);
     }
 }

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

@@ -25,87 +25,76 @@ import java.util.HashMap;
 import java.util.Map;
 
 public class InliningContext {
-
     @Nullable
     private final InliningContext parent;
 
-    public final Map<Integer, LambdaInfo> expressionMap;
-
+    private final Map<Integer, LambdaInfo> expressionMap;
     public final GenerationState state;
-
     public final NameGenerator nameGenerator;
-
     public final TypeRemapper typeRemapper;
-
-    public final ReifiedTypeInliner reifedTypeInliner;
-
+    public final ReifiedTypeInliner reifiedTypeInliner;
     public final boolean isInliningLambda;
-
     public final boolean classRegeneration;
 
-    protected InliningContext(
+    public InliningContext(
             @Nullable InliningContext parent,
-            @NotNull Map<Integer, LambdaInfo> map,
+            @NotNull Map<Integer, LambdaInfo> expressionMap,
             @NotNull GenerationState state,
             @NotNull NameGenerator nameGenerator,
             @NotNull TypeRemapper typeRemapper,
-            @NotNull ReifiedTypeInliner reifedTypeInliner,
+            @NotNull ReifiedTypeInliner reifiedTypeInliner,
             boolean isInliningLambda,
             boolean classRegeneration
     ) {
         this.parent = parent;
-        expressionMap = map;
+        this.expressionMap = expressionMap;
         this.state = state;
         this.nameGenerator = nameGenerator;
         this.typeRemapper = typeRemapper;
-        this.reifedTypeInliner = reifedTypeInliner;
+        this.reifiedTypeInliner = reifiedTypeInliner;
         this.isInliningLambda = isInliningLambda;
         this.classRegeneration = classRegeneration;
     }
 
-    public InliningContext subInline(NameGenerator generator) {
-        return subInline(generator, Collections.<String, String>emptyMap());
+    @NotNull
+    public InliningContext subInline(@NotNull NameGenerator generator) {
+        return subInline(generator, Collections.<String, String>emptyMap(), isInliningLambda);
     }
 
-    public InliningContext subInlineLambda(LambdaInfo lambdaInfo) {
+    @NotNull
+    public InliningContext subInlineLambda(@NotNull LambdaInfo lambdaInfo) {
         Map<String, String> map = new HashMap<String, String>();
         map.put(lambdaInfo.getLambdaClassType().getInternalName(), null); //mark lambda inlined
         return subInline(nameGenerator.subGenerator("lambda"), map, true);
     }
 
-    private InliningContext subInline(NameGenerator generator, Map<String, String> additionalTypeMappings) {
-        return subInline(generator, additionalTypeMappings, isInliningLambda);
-    }
-
+    @NotNull
     public InliningContext subInlineWithClassRegeneration(
             @NotNull NameGenerator generator,
             @NotNull Map<String, String> newTypeMappings,
             @NotNull InlineCallSiteInfo callSiteInfo
     ) {
-        return new RegeneratedClassContext(this, expressionMap, state, generator,
-                                           TypeRemapper.createFrom(typeRemapper, newTypeMappings),
-                                           reifedTypeInliner, isInliningLambda, callSiteInfo);
-    }
-
-    public InliningContext subInline(NameGenerator generator, Map<String, String> additionalTypeMappings, boolean isInliningLambda) {
-        return subInline(generator, additionalTypeMappings, isInliningLambda, classRegeneration);
+        return new RegeneratedClassContext(
+                this, expressionMap, state, generator, TypeRemapper.createFrom(typeRemapper, newTypeMappings),
+                reifiedTypeInliner, isInliningLambda, callSiteInfo
+        );
     }
 
+    @NotNull
     private InliningContext subInline(
-            NameGenerator generator,
-            Map<String, String> additionalTypeMappings,
-            boolean isInliningLambda,
-            boolean isRegeneration
+            @NotNull NameGenerator generator, @NotNull Map<String, String> additionalTypeMappings, boolean isInliningLambda
     ) {
         //isInliningLambda && !this.isInliningLambda for root inline lambda
-        return new InliningContext(this, expressionMap, state, generator,
-                                   TypeRemapper.createFrom(
-                                           typeRemapper,
-                                           additionalTypeMappings,
-                                           //root inline lambda
-                                           isInliningLambda && !this.isInliningLambda
-                                   ),
-                                   reifedTypeInliner, isInliningLambda, isRegeneration);
+        return new InliningContext(
+                this, expressionMap, state, generator,
+                TypeRemapper.createFrom(
+                        typeRemapper,
+                        additionalTypeMappings,
+                        //root inline lambda
+                        isInliningLambda && !this.isInliningLambda
+                ),
+                reifiedTypeInliner, isInliningLambda, classRegeneration
+        );
     }
 
     public boolean isRoot() {
@@ -114,12 +103,8 @@ public class InliningContext {
 
     @NotNull
     public RootInliningContext getRoot() {
-        if (isRoot()) {
-            return (RootInliningContext) this;
-        }
-        else {
-            return parent.getRoot();
-        }
+        //noinspection ConstantConditions
+        return isRoot() ? (RootInliningContext) this : parent.getRoot();
     }
 
     @Nullable
@@ -127,11 +112,7 @@ public class InliningContext {
         return parent;
     }
 
-    public boolean isInliningLambdaRootContext() {
-        //noinspection ConstantConditions
-        return isInliningLambda && !getParent().isInliningLambda;
-    }
-
+    @NotNull
     public InlineCallSiteInfo getCallSiteInfo() {
         assert parent != null : "At least root context should return proper value";
         return parent.getCallSiteInfo();

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

@@ -40,36 +40,26 @@ import java.util.Set;
 import static org.jetbrains.kotlin.codegen.binding.CodegenBinding.*;
 
 public class LambdaInfo implements CapturedParamOwner, LabelOwner {
-
     public final KtExpression expression;
-
     private final KotlinTypeMapper typeMapper;
-
-    @NotNull
     public final Set<String> labels;
-
     private final CalculatedClosure closure;
-
     public final boolean isCrossInline;
-
-    private SMAPAndMethodNode node;
-
-    private List<CapturedParamDesc> capturedVars;
-
     private final FunctionDescriptor functionDescriptor;
-
     private final ClassDescriptor classDescriptor;
-
     private final Type closureClassType;
 
-    LambdaInfo(@NotNull KtExpression expr, @NotNull KotlinTypeMapper typeMapper, boolean isCrossInline) {
+    private SMAPAndMethodNode node;
+    private List<CapturedParamDesc> capturedVars;
+
+    public LambdaInfo(@NotNull KtExpression expression, @NotNull KotlinTypeMapper typeMapper, boolean isCrossInline) {
         this.isCrossInline = isCrossInline;
-        this.expression = expr instanceof KtLambdaExpression ?
-                          ((KtLambdaExpression) expr).getFunctionLiteral() : expr;
+        this.expression = expression instanceof KtLambdaExpression ?
+                          ((KtLambdaExpression) expression).getFunctionLiteral() : expression;
 
         this.typeMapper = typeMapper;
         BindingContext bindingContext = typeMapper.getBindingContext();
-        functionDescriptor = bindingContext.get(BindingContext.FUNCTION, expression);
+        functionDescriptor = bindingContext.get(BindingContext.FUNCTION, this.expression);
         assert functionDescriptor != null : "Function is not resolved to descriptor: " + expression.getText();
 
         classDescriptor = anonymousClassForCallable(bindingContext, functionDescriptor);
@@ -78,34 +68,39 @@ public class LambdaInfo implements CapturedParamOwner, LabelOwner {
         closure = bindingContext.get(CLOSURE, classDescriptor);
         assert closure != null : "Closure for lambda should be not null " + expression.getText();
 
-
-        labels = InlineCodegen.getDeclarationLabels(expr, functionDescriptor);
+        labels = InlineCodegen.getDeclarationLabels(expression, functionDescriptor);
     }
 
+    @NotNull
     public SMAPAndMethodNode getNode() {
         return node;
     }
 
-    public void setNode(SMAPAndMethodNode node) {
+    public void setNode(@NotNull SMAPAndMethodNode node) {
         this.node = node;
     }
 
+    @NotNull
     public FunctionDescriptor getFunctionDescriptor() {
         return functionDescriptor;
     }
 
+    @NotNull
     public KtExpression getFunctionWithBodyOrCallableReference() {
         return expression;
     }
 
+    @NotNull
     public ClassDescriptor getClassDescriptor() {
         return classDescriptor;
     }
 
+    @NotNull
     public Type getLambdaClassType() {
         return closureClassType;
     }
 
+    @NotNull
     public List<CapturedParamDesc> getCapturedVars() {
         //lazy initialization cause it would be calculated after object creation
         if (capturedVars == null) {
@@ -114,11 +109,12 @@ public class LambdaInfo implements CapturedParamOwner, LabelOwner {
             if (closure.getCaptureThis() != null) {
                 Type type = typeMapper.mapType(closure.getCaptureThis());
                 EnclosedValueDescriptor descriptor =
-                        new EnclosedValueDescriptor(AsmUtil.CAPTURED_THIS_FIELD,
-                                                    null,
-                                                    StackValue.field(type, closureClassType, AsmUtil.CAPTURED_THIS_FIELD, false,
-                                                                     StackValue.LOCAL_0),
-                                                    type);
+                        new EnclosedValueDescriptor(
+                                AsmUtil.CAPTURED_THIS_FIELD,
+                                /* descriptor = */ null,
+                                StackValue.field(type, closureClassType, AsmUtil.CAPTURED_THIS_FIELD, false, StackValue.LOCAL_0),
+                                type
+                        );
                 capturedVars.add(getCapturedParamInfo(descriptor));
             }
 
@@ -127,10 +123,10 @@ public class LambdaInfo implements CapturedParamOwner, LabelOwner {
                 EnclosedValueDescriptor descriptor =
                         new EnclosedValueDescriptor(
                                 AsmUtil.CAPTURED_RECEIVER_FIELD,
-                                null,
-                                StackValue.field(type, closureClassType, AsmUtil.CAPTURED_RECEIVER_FIELD, false,
-                                                 StackValue.LOCAL_0),
-                                type);
+                                /* descriptor = */ null,
+                                StackValue.field(type, closureClassType, AsmUtil.CAPTURED_RECEIVER_FIELD, false, StackValue.LOCAL_0),
+                                type
+                        );
                 capturedVars.add(getCapturedParamInfo(descriptor));
             }
 
@@ -143,29 +139,29 @@ public class LambdaInfo implements CapturedParamOwner, LabelOwner {
 
     @NotNull
     private CapturedParamDesc getCapturedParamInfo(@NotNull EnclosedValueDescriptor descriptor) {
-        return CapturedParamDesc.createDesc(this, descriptor.getFieldName(), descriptor.getType());
+        return new CapturedParamDesc(this, descriptor.getFieldName(), descriptor.getType());
     }
 
     @NotNull
     public List<Type> getInvokeParamsWithoutCaptured() {
-        Type[] types = typeMapper.mapAsmMethod(functionDescriptor).getArgumentTypes();
-        return Arrays.asList(types);
+        return Arrays.asList(typeMapper.mapAsmMethod(functionDescriptor).getArgumentTypes());
     }
 
     @NotNull
-    public Parameters addAllParameters(FieldRemapper remapper) {
+    public Parameters addAllParameters(@NotNull FieldRemapper remapper) {
         Method asmMethod = typeMapper.mapAsmMethod(getFunctionDescriptor());
-        ParametersBuilder builder =
-                ParametersBuilder.initializeBuilderFrom(AsmTypes.OBJECT_TYPE, asmMethod.getDescriptor(), this);
+        ParametersBuilder builder = ParametersBuilder.initializeBuilderFrom(AsmTypes.OBJECT_TYPE, asmMethod.getDescriptor(), this);
 
         for (CapturedParamDesc info : getCapturedVars()) {
             CapturedParamInfo field = remapper.findField(new FieldInsnNode(0, info.getContainingLambdaName(), info.getFieldName(), ""));
+            assert field != null : "Captured field not found: " + info.getContainingLambdaName() + "." + info.getFieldName();
             builder.addCapturedParam(field, info.getFieldName());
         }
 
         return builder.buildParameters();
     }
 
+    @NotNull
     @Override
     public Type getType() {
         return closureClassType;
@@ -175,6 +171,4 @@ public class LambdaInfo implements CapturedParamOwner, LabelOwner {
     public boolean isMyLabel(@NotNull String name) {
         return labels.contains(name);
     }
-
 }
-

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

@@ -28,18 +28,16 @@ import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
 import static org.jetbrains.kotlin.codegen.inline.LocalVarRemapper.RemapStatus.*;
 
 public class LocalVarRemapper {
-
     private final Parameters params;
     private final int actualParamsSize;
-
     private final StackValue[] remapValues;
     private final int additionalShift;
 
-    public LocalVarRemapper(Parameters params, int additionalShift) {
+    public LocalVarRemapper(@NotNull Parameters params, int additionalShift) {
         this.additionalShift = additionalShift;
         this.params = params;
 
-        remapValues = new StackValue [params.getArgsSizeOnStack()];
+        remapValues = new StackValue[params.getArgsSizeOnStack()];
 
         int realSize = 0;
         for (ParameterInfo info : params) {
@@ -56,7 +54,8 @@ public class LocalVarRemapper {
         actualParamsSize = realSize;
     }
 
-    public RemapInfo doRemap(int index) {
+    @NotNull
+    private RemapInfo doRemap(int index) {
         int remappedIndex;
 
         if (index < params.getArgsSizeOnStack()) {
@@ -67,16 +66,20 @@ public class LocalVarRemapper {
             }
             if (info.isRemapped()) {
                 return new RemapInfo(remapped, info, REMAPPED);
-            } else {
-                remappedIndex = ((StackValue.Local)remapped).index;
             }
-        } else {
-            remappedIndex = actualParamsSize - params.getArgsSizeOnStack() + index; //captured params not used directly in this inlined method, they used in closure
+            else {
+                remappedIndex = ((StackValue.Local) remapped).index;
+            }
+        }
+        else {
+            //captured params are not used directly in this inlined method, they are used in closure
+            remappedIndex = actualParamsSize - params.getArgsSizeOnStack() + index;
         }
 
         return new RemapInfo(StackValue.local(remappedIndex + additionalShift, AsmTypes.OBJECT_TYPE), null, SHIFT);
     }
 
+    @NotNull
     public RemapInfo remap(int index) {
         RemapInfo info = doRemap(index);
         if (FAIL == info.status) {
@@ -86,23 +89,29 @@ public class LocalVarRemapper {
         return info;
     }
 
-    public void visitIincInsn(int var, int increment, MethodVisitor mv) {
+    public void visitIincInsn(int var, int increment, @NotNull MethodVisitor mv) {
         RemapInfo remap = remap(var);
-        assert remap.value instanceof StackValue.Local;
+        assert remap.value instanceof StackValue.Local : "Remapped value should be a local: " + remap.value;
         mv.visitIincInsn(((StackValue.Local) remap.value).index, increment);
     }
 
-    public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index, MethodVisitor mv) {
+    public void visitLocalVariable(
+            @NotNull String name,
+            @NotNull String desc,
+            @Nullable String signature,
+            @NotNull Label start,
+            @NotNull Label end,
+            int index,
+            MethodVisitor mv
+    ) {
         RemapInfo info = doRemap(index);
         //add entries only for shifted vars
         if (SHIFT == info.status) {
-            int newIndex = ((StackValue.Local) info.value).index;
-            mv.visitLocalVariable(name, desc, signature, start, end, newIndex);
+            mv.visitLocalVariable(name, desc, signature, start, end, ((StackValue.Local) info.value).index);
         }
     }
 
-
-    public void visitVarInsn(int opcode, int var, InstructionAdapter mv) {
+    public void visitVarInsn(int opcode, int var, @NotNull InstructionAdapter mv) {
         RemapInfo remapInfo = remap(var);
         StackValue value = remapInfo.value;
         if (value instanceof StackValue.Local) {
@@ -117,7 +126,8 @@ public class LocalVarRemapper {
             if (remapInfo.parameterInfo != null) {
                 StackValue.coerce(value.type, remapInfo.parameterInfo.type, mv);
             }
-        } else {
+        }
+        else {
             assert remapInfo.parameterInfo != null : "Non local value should have parameter info";
             value.put(remapInfo.parameterInfo.type, mv);
         }
@@ -134,15 +144,15 @@ public class LocalVarRemapper {
         public final ParameterInfo parameterInfo;
         public final RemapStatus status;
 
-        public RemapInfo(@NotNull StackValue value, @Nullable ParameterInfo info, RemapStatus remapStatus) {
+        public RemapInfo(@NotNull StackValue value, @Nullable ParameterInfo parameterInfo, @NotNull RemapStatus remapStatus) {
             this.value = value;
-            parameterInfo = info;
+            this.parameterInfo = parameterInfo;
             this.status = remapStatus;
         }
 
-        public RemapInfo(@NotNull ParameterInfo info) {
+        public RemapInfo(@NotNull ParameterInfo parameterInfo) {
             this.value = null;
-            parameterInfo = info;
+            this.parameterInfo = parameterInfo;
             this.status = FAIL;
         }
     }

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

@@ -54,7 +54,7 @@ public class MethodBodyVisitor extends InstructionAdapter {
     }
 
     @Override
-    public void visitAttribute(Attribute attr) {
+    public void visitAttribute(@NotNull Attribute attr) {
     }
 
     @Override

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

@@ -43,45 +43,24 @@ import java.util.*;
 import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil.*;
 
 public class MethodInliner {
-
     private final MethodNode node;
-
     private final Parameters parameters;
-
     private final InliningContext inliningContext;
-
     private final FieldRemapper nodeRemapper;
-
     private final boolean isSameModule;
-
     private final String errorPrefix;
-
     private final SourceMapper sourceMapper;
-
     private final InlineCallSiteInfo inlineCallSiteInfo;
-
     private final KotlinTypeMapper typeMapper;
-
     private final List<InvokeCall> invokeCalls = new ArrayList<InvokeCall>();
-
     //keeps order
     private final List<TransformationInfo> transformations = new ArrayList<TransformationInfo>();
     //current state
     private final Map<String, String> currentTypeMapping = new HashMap<String, String>();
-
     private final InlineResult result;
-
     private int lambdasFinallyBlocks;
-
     private final InlineOnlySmapSkipper inlineOnlySmapSkipper;
 
-    /*
-     *
-     * @param node
-     * @param parameters
-     * @param inliningContext
-     * @param lambdaType - in case on lambda 'invoke' inlining
-     */
     public MethodInliner(
             @NotNull MethodNode node,
             @NotNull Parameters parameters,
@@ -106,6 +85,7 @@ public class MethodInliner {
         this.inlineOnlySmapSkipper = smapSkipper;
     }
 
+    @NotNull
     public InlineResult doInline(
             @NotNull MethodVisitor adapter,
             @NotNull LocalVarRemapper remapper,
@@ -115,6 +95,7 @@ public class MethodInliner {
         return doInline(adapter, remapper, remapReturn, labelOwner, 0);
     }
 
+    @NotNull
     private InlineResult doInline(
             @NotNull MethodVisitor adapter,
             @NotNull LocalVarRemapper remapper,
@@ -129,11 +110,12 @@ public class MethodInliner {
         Label end = new Label();
         transformedNode = doInline(transformedNode);
         removeClosureAssertions(transformedNode);
-        InsnList instructions = transformedNode.instructions;
-        instructions.resetLabels();
+        transformedNode.instructions.resetLabels();
 
-        MethodNode resultNode = new MethodNode(InlineCodegenUtil.API, transformedNode.access, transformedNode.name, transformedNode.desc,
-                                         transformedNode.signature, ArrayUtil.toStringArray(transformedNode.exceptions));
+        MethodNode resultNode = new MethodNode(
+                InlineCodegenUtil.API, transformedNode.access, transformedNode.name, transformedNode.desc,
+                transformedNode.signature, ArrayUtil.toStringArray(transformedNode.exceptions)
+        );
         RemapVisitor visitor = new RemapVisitor(resultNode, remapper, nodeRemapper);
         try {
             transformedNode.accept(visitor);
@@ -145,7 +127,10 @@ public class MethodInliner {
         resultNode.visitLabel(end);
 
         if (inliningContext.isRoot()) {
-            InternalFinallyBlockInliner.processInlineFunFinallyBlocks(resultNode, lambdasFinallyBlocks, ((StackValue.Local)remapper.remap(parameters.getArgsSizeOnStack() + 1).value).index);
+            StackValue remapValue = remapper.remap(parameters.getArgsSizeOnStack() + 1).value;
+            InternalFinallyBlockInliner.processInlineFunFinallyBlocks(
+                    resultNode, lambdasFinallyBlocks, ((StackValue.Local) remapValue).index
+            );
         }
 
         processReturns(resultNode, labelOwner, remapReturn, end);
@@ -156,8 +141,8 @@ public class MethodInliner {
         return result;
     }
 
-    private MethodNode doInline(final MethodNode node) {
-
+    @NotNull
+    private MethodNode doInline(@NotNull MethodNode node) {
         final Deque<InvokeCall> currentInvokes = new LinkedList<InvokeCall>(invokeCalls);
 
         final MethodNode resultNode = new MethodNode(node.access, node.name, node.desc, node.signature, null);
@@ -174,8 +159,8 @@ public class MethodInliner {
 
         final int markerShift = InlineCodegenUtil.calcMarkerShift(parameters, node);
         InlineAdapter lambdaInliner = new InlineAdapter(remappingMethodAdapter, parameters.getArgsSizeOnStack(), sourceMapper) {
-
             private TransformationInfo transformationInfo;
+
             private void handleAnonymousObjectRegeneration() {
                 transformationInfo = iterator.next();
 
@@ -190,10 +175,7 @@ public class MethodInliner {
                             currentTypeMapping,
                             inlineCallSiteInfo
                     );
-                    ObjectTransformer transformer = transformationInfo.createTransformer(
-                            childInliningContext,
-                            isSameModule
-                    );
+                    ObjectTransformer transformer = transformationInfo.createTransformer(childInliningContext, isSameModule);
 
                     InlineResult transformResult = transformer.doTransform(nodeRemapper);
                     result.addAllClassesToRemove(transformResult);
@@ -213,7 +195,7 @@ public class MethodInliner {
 
             @Override
             public void anew(@NotNull Type type) {
-                if (isAnonymousConstructorCall(type.getInternalName(), "<init>")) {
+                if (isAnonymousClass(type.getInternalName())) {
                     handleAnonymousObjectRegeneration();
                 }
 
@@ -245,23 +227,25 @@ public class MethodInliner {
 
                     setLambdaInlining(true);
                     SMAP lambdaSMAP = info.getNode().getClassSMAP();
+                    //noinspection ConstantConditions
                     SourceMapper mapper =
-                            inliningContext.classRegeneration && !inliningContext.isInliningLambda ?
-                            new NestedSourceMapper(sourceMapper, lambdaSMAP.getIntervals(), lambdaSMAP.getSourceInfo())
+                            inliningContext.classRegeneration && !inliningContext.isInliningLambda
+                            ? new NestedSourceMapper(sourceMapper, lambdaSMAP.getIntervals(), lambdaSMAP.getSourceInfo())
                             : new InlineLambdaSourceMapper(sourceMapper.getParent(), info.getNode());
-                    MethodInliner inliner = new MethodInliner(info.getNode().getNode(), lambdaParameters,
-                                                              inliningContext.subInlineLambda(info),
-                                                              newCapturedRemapper, true /*cause all calls in same module as lambda*/,
-                                                              "Lambda inlining " + info.getLambdaClassType().getInternalName(),
-                                                              mapper, inlineCallSiteInfo, null);
+                    MethodInliner inliner = new MethodInliner(
+                            info.getNode().getNode(), lambdaParameters, inliningContext.subInlineLambda(info),
+                            newCapturedRemapper, true /*cause all calls in same module as lambda*/,
+                            "Lambda inlining " + info.getLambdaClassType().getInternalName(),
+                            mapper, inlineCallSiteInfo, null
+                    );
 
                     LocalVarRemapper remapper = new LocalVarRemapper(lambdaParameters, valueParamShift);
-                    InlineResult lambdaResult = inliner.doInline(this.mv, remapper, true, info, invokeCall.finallyDepthShift);//TODO add skipped this and receiver
+                    //TODO add skipped this and receiver
+                    InlineResult lambdaResult = inliner.doInline(this.mv, remapper, true, info, invokeCall.finallyDepthShift);
                     result.addAllClassesToRemove(lambdaResult);
 
                     //return value boxing/unboxing
-                    Method bridge =
-                            typeMapper.mapAsmMethod(ClosureCodegen.getErasedInvokeFunction(info.getFunctionDescriptor()));
+                    Method bridge = typeMapper.mapAsmMethod(ClosureCodegen.getErasedInvokeFunction(info.getFunctionDescriptor()));
                     Method delegate = typeMapper.mapAsmMethod(info.getFunctionDescriptor());
                     StackValue.onStack(delegate.getReturnType()).put(bridge.getReturnType(), this);
                     setLambdaInlining(false);
@@ -274,31 +258,38 @@ public class MethodInliner {
                 else if (isAnonymousConstructorCall(owner, name)) { //TODO add method
                     //TODO add proper message
                     assert transformationInfo instanceof AnonymousObjectTransformationInfo :
-                            "<init> call doesn't correspond to object transformation info: " + owner + "." + name + ", info " + transformationInfo;
+                            "<init> call doesn't correspond to object transformation info: " +
+                            owner + "." + name + ", info " + transformationInfo;
                     if (transformationInfo.shouldRegenerate(isSameModule)) {
                         //put additional captured parameters on stack
-                        for (CapturedParamDesc capturedParamDesc : ((AnonymousObjectTransformationInfo) transformationInfo).getAllRecapturedParameters()) {
-                            visitFieldInsn(Opcodes.GETSTATIC, capturedParamDesc.getContainingLambdaName(),
-                                           "$$$" + capturedParamDesc.getFieldName(), capturedParamDesc.getType().getDescriptor());
+                        AnonymousObjectTransformationInfo info = (AnonymousObjectTransformationInfo) transformationInfo;
+                        for (CapturedParamDesc capturedParamDesc : info.getAllRecapturedParameters()) {
+                            visitFieldInsn(
+                                    Opcodes.GETSTATIC, capturedParamDesc.getContainingLambdaName(),
+                                    "$$$" + capturedParamDesc.getFieldName(), capturedParamDesc.getType().getDescriptor()
+                            );
                         }
-                        super.visitMethodInsn(opcode, transformationInfo.getNewClassName(), name,
-                                              ((AnonymousObjectTransformationInfo) transformationInfo).getNewConstructorDescriptor(), itf);
+                        super.visitMethodInsn(opcode, transformationInfo.getNewClassName(), name, info.getNewConstructorDescriptor(), itf);
 
                         //TODO: add new inner class also for other contexts
                         if (inliningContext.getParent() instanceof RegeneratedClassContext) {
-                            inliningContext.getParent().typeRemapper.addAdditionalMappings(transformationInfo.getOldClassName(), transformationInfo.getNewClassName());
+                            inliningContext.getParent().typeRemapper.addAdditionalMappings(
+                                    transformationInfo.getOldClassName(), transformationInfo.getNewClassName()
+                            );
                         }
 
                         transformationInfo = null;
-                    } else {
-                        super.visitMethodInsn(opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
+                    }
+                    else {
+                        super.visitMethodInsn(opcode, owner, name, desc, itf);
                     }
                 }
-                else if (!inliningContext.isInliningLambda && ReifiedTypeInliner.isNeedClassReificationMarker(new MethodInsnNode(opcode, owner, name, desc, false))) {
+                else if (!inliningContext.isInliningLambda &&
+                         ReifiedTypeInliner.isNeedClassReificationMarker(new MethodInsnNode(opcode, owner, name, desc, false))) {
                     //we shouldn't process here content of inlining lambda it should be reified at external level
                 }
                 else {
-                    super.visitMethodInsn(opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
+                    super.visitMethodInsn(opcode, owner, name, desc, itf);
                 }
             }
 
@@ -315,7 +306,6 @@ public class MethodInliner {
                 lambdasFinallyBlocks = resultNode.tryCatchBlocks.size();
                 super.visitMaxs(stack, locals);
             }
-
         };
 
         node.accept(lambdaInliner);
@@ -324,18 +314,20 @@ public class MethodInliner {
     }
 
     @NotNull
-    public static CapturedParamInfo findCapturedField(FieldInsnNode node, FieldRemapper fieldRemapper) {
+    public static CapturedParamInfo findCapturedField(@NotNull FieldInsnNode node, @NotNull FieldRemapper fieldRemapper) {
         assert node.name.startsWith("$$$") : "Captured field template should start with $$$ prefix";
         FieldInsnNode fin = new FieldInsnNode(node.getOpcode(), node.owner, node.name.substring(3), node.desc);
         CapturedParamInfo field = fieldRemapper.findField(fin);
         if (field == null) {
-            throw new IllegalStateException("Couldn't find captured field " + node.owner + "." + node.name + " in " + fieldRemapper.getLambdaInternalName());
+            throw new IllegalStateException(
+                    "Couldn't find captured field " + node.owner + "." + node.name + " in " + fieldRemapper.getLambdaInternalName()
+            );
         }
         return field;
     }
 
     @NotNull
-    public MethodNode prepareNode(@NotNull MethodNode node, int finallyDeepShift) {
+    private MethodNode prepareNode(@NotNull MethodNode node, int finallyDeepShift) {
         final int capturedParamsSize = parameters.getCapturedArgsSizeOnStack();
         final int realParametersSize = parameters.getRealArgsSizeOnStack();
         Type[] types = Type.getArgumentTypes(node.desc);
@@ -345,8 +337,10 @@ public class MethodInliner {
         Type[] allTypes = ArrayUtil.mergeArrays(types, capturedTypes.toArray(new Type[capturedTypes.size()]));
 
         node.instructions.resetLabels();
-        MethodNode transformedNode = new MethodNode(InlineCodegenUtil.API, node.access, node.name, Type.getMethodDescriptor(returnType, allTypes), node.signature, null) {
-
+        MethodNode transformedNode = new MethodNode(
+                InlineCodegenUtil.API, node.access, node.name, Type.getMethodDescriptor(returnType, allTypes), node.signature, null
+        ) {
+            @SuppressWarnings("ConstantConditions")
             private final boolean GENERATE_DEBUG_INFO = InlineCodegenUtil.GENERATE_SMAP && inlineOnlySmapSkipper == null;
 
             private final boolean isInliningLambda = nodeRemapper.isInsideInliningLambda();
@@ -372,7 +366,7 @@ public class MethodInliner {
 
             @Override
             public void visitLineNumber(int line, @NotNull Label start) {
-                if(isInliningLambda || GENERATE_DEBUG_INFO) {
+                if (isInliningLambda || GENERATE_DEBUG_INFO) {
                     super.visitLineNumber(line, start);
                 }
             }
@@ -382,9 +376,8 @@ public class MethodInliner {
                     @NotNull String name, @NotNull String desc, String signature, @NotNull Label start, @NotNull Label end, int index
             ) {
                 if (isInliningLambda || GENERATE_DEBUG_INFO) {
-                    String varSuffix = inliningContext.isRoot() &&
-                                       !InlineCodegenUtil.isFakeLocalVariableForInline(name) ?
-                                       INLINE_FUN_VAR_SUFFIX : "";
+                    String varSuffix =
+                            inliningContext.isRoot() && !InlineCodegenUtil.isFakeLocalVariableForInline(name) ? INLINE_FUN_VAR_SUFFIX : "";
                     String varName = !varSuffix.isEmpty() && name.equals("this") ? name + "_" : name;
                     super.visitLocalVariable(varName + varSuffix, desc, signature, start, end, getNewIndex(index));
                 }
@@ -400,7 +393,9 @@ public class MethodInliner {
     }
 
     @NotNull
-    protected MethodNode markPlacesForInlineAndRemoveInlinable(@NotNull MethodNode node, @NotNull LabelOwner labelOwner, int finallyDeepShift) {
+    private MethodNode markPlacesForInlineAndRemoveInlinable(
+            @NotNull MethodNode node, @NotNull LabelOwner labelOwner, int finallyDeepShift
+    ) {
         node = prepareNode(node, finallyDeepShift);
 
         Frame<SourceValue>[] sources = analyzeMethodNodeBeforeInline(node);
@@ -460,9 +455,7 @@ public class MethodInliner {
                         }
 
                         transformations.add(
-                                buildConstructorInvocation(
-                                        owner, desc, lambdaMapping, awaitClassReification
-                                )
+                                buildConstructorInvocation(owner, desc, lambdaMapping, awaitClassReification)
                         );
                         awaitClassReification = false;
                     }
@@ -482,7 +475,8 @@ public class MethodInliner {
                     else if (isWhenMappingAccess(className, fieldInsnNode.name)) {
                         transformations.add(
                             new WhenMappingTransformationInfo(
-                                    className, inliningContext.nameGenerator, isAlreadyRegenerated(className), fieldInsnNode)
+                                    className, inliningContext.nameGenerator, isAlreadyRegenerated(className), fieldInsnNode
+                            )
                         );
                     }
 
@@ -498,7 +492,8 @@ public class MethodInliner {
                     //NB: Cause we generate exception table for default handler using gaps (see ExpressionCodegen.visitTryExpression)
                     //it may occurs that interval for default handler starts before catch start label, so this label seems as dead,
                     //but as result all this labels will be merged into one (see KT-5863)
-                } else {
+                }
+                else {
                     toDelete.add(prevNode);
                 }
             }
@@ -522,6 +517,7 @@ public class MethodInliner {
         return node;
     }
 
+    @NotNull
     private Frame<SourceValue>[] analyzeMethodNodeBeforeInline(@NotNull MethodNode node) {
         try {
             new MandatoryMethodTransformer().transform("fake", node);
@@ -545,14 +541,12 @@ public class MethodInliner {
             }
         };
 
-        Frame<SourceValue>[] sources;
         try {
-            sources = analyzer.analyze("fake", node);
+            return analyzer.analyze("fake", node);
         }
         catch (AnalyzerException e) {
             throw wrapException(e, node, "couldn't inline method call");
         }
-        return sources;
     }
 
     private static boolean isEmptyTryInterval(@NotNull TryCatchBlockNode tryCatchBlockNode) {
@@ -595,7 +589,8 @@ public class MethodInliner {
             int varIndex = ((VarInsnNode) insnNode).var;
             return getLambdaIfExists(varIndex);
         }
-        else if (insnNode instanceof FieldInsnNode) {
+
+        if (insnNode instanceof FieldInsnNode) {
             FieldInsnNode fieldInsnNode = (FieldInsnNode) insnNode;
             if (fieldInsnNode.name.startsWith("$$$")) {
                 return findCapturedField(fieldInsnNode, nodeRemapper).getLambda();
@@ -605,6 +600,7 @@ public class MethodInliner {
         return null;
     }
 
+    @Nullable
     private LambdaInfo getLambdaIfExists(int varIndex) {
         if (varIndex < parameters.getArgsSizeOnStack()) {
             return parameters.getParameterByDeclarationSlot(varIndex).getLambda();
@@ -612,13 +608,14 @@ public class MethodInliner {
         return null;
     }
 
-    private static void removeClosureAssertions(MethodNode node) {
+    private static void removeClosureAssertions(@NotNull MethodNode node) {
         AbstractInsnNode cur = node.instructions.getFirst();
         while (cur != null && cur.getNext() != null) {
             AbstractInsnNode next = cur.getNext();
             if (next.getType() == AbstractInsnNode.METHOD_INSN) {
                 MethodInsnNode methodInsnNode = (MethodInsnNode) next;
-                if (methodInsnNode.name.equals("checkParameterIsNotNull") && methodInsnNode.owner.equals(IntrinsicMethods.INTRINSICS_CLASS_NAME)) {
+                if (methodInsnNode.name.equals("checkParameterIsNotNull") &&
+                    methodInsnNode.owner.equals(IntrinsicMethods.INTRINSICS_CLASS_NAME)) {
                     AbstractInsnNode prev = cur.getPrevious();
 
                     assert cur.getOpcode() == Opcodes.LDC : "checkParameterIsNotNull should go after LDC but " + cur;
@@ -676,7 +673,7 @@ public class MethodInliner {
     }
 
     @NotNull
-    public static List<AbstractInsnNode> getCapturedFieldAccessChain(@NotNull VarInsnNode aload0) {
+    private static List<AbstractInsnNode> getCapturedFieldAccessChain(@NotNull VarInsnNode aload0) {
         List<AbstractInsnNode> fieldAccessChain = new ArrayList<AbstractInsnNode>();
         fieldAccessChain.add(aload0);
         AbstractInsnNode next = aload0.getNext();
@@ -697,7 +694,9 @@ public class MethodInliner {
         return fieldAccessChain;
     }
 
-    public static void putStackValuesIntoLocals(List<Type> directOrder, int shift, InstructionAdapter iv, String descriptor) {
+    private static void putStackValuesIntoLocals(
+            @NotNull List<Type> directOrder, int shift, @NotNull InstructionAdapter iv, @NotNull String descriptor
+    ) {
         Type[] actualParams = Type.getArgumentTypes(descriptor);
         assert actualParams.length == directOrder.size() : "Number of expected and actual params should be equals!";
 
@@ -719,42 +718,21 @@ public class MethodInliner {
         }
     }
 
-    //TODO: check it's external module
-    //TODO?: assert method exists in facade?
-    public String changeOwnerForExternalPackage(String type, int opcode) {
-        //if (isSameModule || (opcode & Opcodes.INVOKESTATIC) == 0) {
-        //    return type;
-        //}
-
-        //JvmClassName name = JvmClassName.byInternalName(type);
-        //String packageClassInternalName = PackageClassUtils.getPackageClassInternalName(name.getPackageFqName());
-        //if (type.startsWith(packageClassInternalName + '$')) {
-        //    VirtualFile virtualFile = InlineCodegenUtil.findVirtualFile(inliningContext.state.getProject(), type);
-        //    if (virtualFile != null) {
-        //        KotlinJvmBinaryClass klass = KotlinBinaryClassCache.getKotlinBinaryClass(virtualFile);
-        //        if (klass != null && klass.getClassHeader().getSyntheticClassKind() == KotlinSyntheticClass.Kind.PACKAGE_PART) {
-        //            return packageClassInternalName;
-        //        }
-        //    }
-        //}
-
-        return type;
-    }
-
     @NotNull
-    public RuntimeException wrapException(@NotNull Throwable originalException, @NotNull MethodNode node, @NotNull String errorSuffix) {
+    private RuntimeException wrapException(@NotNull Throwable originalException, @NotNull MethodNode node, @NotNull String errorSuffix) {
         if (originalException instanceof InlineException) {
             return new InlineException(errorPrefix + ": " + errorSuffix, originalException);
         }
         else {
-            return new InlineException(errorPrefix + ": " + errorSuffix + "\ncause: " +
-                                       getNodeText(node), originalException);
+            return new InlineException(errorPrefix + ": " + errorSuffix + "\nCause: " + getNodeText(node), originalException);
         }
     }
 
     @NotNull
     //process local and global returns (local substituted with goto end-label global kept unchanged)
-    public static List<PointForExternalFinallyBlocks> processReturns(@NotNull MethodNode node, @NotNull LabelOwner labelOwner, boolean remapReturn, Label endLabel) {
+    public static List<PointForExternalFinallyBlocks> processReturns(
+            @NotNull MethodNode node, @NotNull LabelOwner labelOwner, boolean remapReturn, @Nullable Label endLabel
+    ) {
         if (!remapReturn) {
             return Collections.emptyList();
         }
@@ -785,9 +763,9 @@ public class MethodInliner {
                 //generate finally block before nonLocalReturn flag/return/goto
                 LabelNode label = new LabelNode();
                 instructions.insert(insnNode, label);
-                result.add(new PointForExternalFinallyBlocks(getInstructionToInsertFinallyBefore(insnNode, isLocalReturn),
-                                                             getReturnType(insnNode.getOpcode()),
-                                                             label));
+                result.add(new PointForExternalFinallyBlocks(
+                        getInstructionToInsertFinallyBefore(insnNode, isLocalReturn), getReturnType(insnNode.getOpcode()), label
+                ));
             }
             insnNode = insnNode.getNext();
         }
@@ -860,7 +838,7 @@ public class MethodInliner {
             }
         }
 
-        public void transform(MethodNode methodNode) {
+        public void transform(@NotNull MethodNode methodNode) {
             int returnVariableIndex = -1;
             if (needsReturnVariable) {
                 returnVariableIndex = methodNode.maxLocals;
@@ -872,6 +850,7 @@ public class MethodInliner {
             }
         }
 
+        @NotNull
         public static LocalReturnsNormalizer createFor(
                 @NotNull MethodNode methodNode,
                 @NotNull LabelOwner owner,
@@ -905,21 +884,16 @@ public class MethodInliner {
         }
     }
 
-
-
     @NotNull
-    private static AbstractInsnNode getInstructionToInsertFinallyBefore(@NotNull AbstractInsnNode nonLocalReturnOrJump, boolean isLocal)  {
+    private static AbstractInsnNode getInstructionToInsertFinallyBefore(@NotNull AbstractInsnNode nonLocalReturnOrJump, boolean isLocal) {
         return isLocal ? nonLocalReturnOrJump : nonLocalReturnOrJump.getPrevious();
     }
 
     //Place to insert finally blocks from try blocks that wraps inline fun call
     public static class PointForExternalFinallyBlocks {
-
-        final AbstractInsnNode beforeIns;
-
-        final Type returnType;
-
-        final LabelNode finallyIntervalEnd;
+        public final AbstractInsnNode beforeIns;
+        public final Type returnType;
+        public final LabelNode finallyIntervalEnd;
 
         public PointForExternalFinallyBlocks(
                 @NotNull AbstractInsnNode beforeIns,
@@ -930,6 +904,5 @@ public class MethodInliner {
             this.returnType = returnType;
             this.finallyIntervalEnd = finallyIntervalEnd;
         }
-
     }
 }

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

@@ -16,7 +16,6 @@
 
 package org.jetbrains.kotlin.codegen.inline
 
-import org.jetbrains.kotlin.codegen.optimization.common.InsnSequence
 import org.jetbrains.kotlin.codegen.optimization.fixStack.top
 import org.jetbrains.org.objectweb.asm.Opcodes
 import org.jetbrains.org.objectweb.asm.tree.AbstractInsnNode
@@ -25,7 +24,6 @@ import org.jetbrains.org.objectweb.asm.tree.VarInsnNode
 import org.jetbrains.org.objectweb.asm.tree.analysis.Frame
 import org.jetbrains.org.objectweb.asm.tree.analysis.SourceValue
 
-
 fun MethodInliner.getLambdaIfExistsAndMarkInstructions(
         insnNode: AbstractInsnNode?,
         processSwap: Boolean,

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

@@ -42,14 +42,13 @@ abstract class ObjectTransformer<out T : TransformationInfo>(@JvmField val trans
 
         return RemappingClassBuilder(
                 classBuilder,
-                AsmTypeRemapper(inliningContext.typeRemapper, inliningContext.root.typeParameterMappings == null, transformationResult))
+                AsmTypeRemapper(inliningContext.typeRemapper, inliningContext.root.typeParameterMappings == null, transformationResult)
+        )
     }
 
-
     fun createClassReader(): ClassReader {
         return InlineCodegenUtil.buildClassReaderByInternalName(state, transformationInfo.oldClassName)
     }
-
 }
 
 class WhenMappingTransformer(
@@ -72,7 +71,7 @@ class WhenMappingTransformer(
             }
 
             override fun visitField(access: Int, name: String, desc: String, signature: String?, value: Any?): FieldVisitor? {
-                return if (name.equals(fieldNode.name)) {
+                return if (name == fieldNode.name) {
                     classBuilder.newField(JvmDeclarationOrigin.NO_ORIGIN, access, name, desc, signature, value)
                 }
                 else {
@@ -80,18 +79,22 @@ class WhenMappingTransformer(
                 }
             }
 
-            override fun visitMethod(access: Int, name: String, desc: String, signature: String?, exceptions: Array<out String>?): MethodVisitor? {
-                val methodNode = MethodNode(access, name, desc, signature, exceptions)
-                methodNodes.add(methodNode)
-                return methodNode
+            override fun visitMethod(
+                    access: Int, name: String, desc: String, signature: String?, exceptions: Array<out String>?
+            ): MethodVisitor? {
+                return MethodNode(access, name, desc, signature, exceptions).apply {
+                    methodNodes.add(this)
+                }
             }
         }, ClassReader.SKIP_FRAMES)
 
-        assert(methodNodes.size == 1, { "When mapping ${fieldNode.owner} class should contain only one method but: " + methodNodes.joinToString { it.name } })
+        assert(methodNodes.size == 1) {
+            "When mapping ${fieldNode.owner} class should contain only one method but: " + methodNodes.joinToString { it.name }
+        }
         val clinit = methodNodes.first()
         assert(clinit.name == "<clinit>", { "When mapping should contains only <clinit> method, but contains '${clinit.name}'" })
 
-        var transformedClinit = cutOtherMappings(clinit)
+        val transformedClinit = cutOtherMappings(clinit)
         val result = classBuilder.newMethod(
                 JvmDeclarationOrigin.NO_ORIGIN, transformedClinit.access, transformedClinit.name, transformedClinit.desc,
                 transformedClinit.signature, transformedClinit.exceptions.toTypedArray()
@@ -102,7 +105,6 @@ class WhenMappingTransformer(
         return transformationResult
     }
 
-
     private fun cutOtherMappings(node: MethodNode): MethodNode {
         val myArrayAccess = InsnSequence(node.instructions).first {
             it is FieldInsnNode && it.name.equals(transformationInfo.fieldNode.name)
@@ -123,9 +125,9 @@ class WhenMappingTransformer(
         return result
     }
 
-    private fun isValues(node: AbstractInsnNode) = node is MethodInsnNode &&
-                                                   node.opcode == Opcodes.INVOKESTATIC &&
-                                                   node.name == "values" &&
-                                                   node.desc == "()[" + Type.getObjectType(node.owner).descriptor
+    private fun isValues(node: AbstractInsnNode) =
+            node is MethodInsnNode &&
+            node.opcode == Opcodes.INVOKESTATIC &&
+            node.name == "values" &&
+            node.desc == "()[" + Type.getObjectType(node.owner).descriptor
 }
-

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

@@ -22,28 +22,22 @@ import org.jetbrains.kotlin.codegen.StackValue;
 import org.jetbrains.org.objectweb.asm.Type;
 
 class ParameterInfo {
-
-    protected final int index;
-
-    protected final int declarationIndex;
+    private final int index;
+    public final int declarationIndex;
+    public final Type type;
+    //for skipped parameter: e.g. inlined lambda
+    public final boolean isSkipped;
 
     private boolean isCaptured;
-
-    public final Type type;
-
-    //for skipped parameter: e.g. inlined lambda
-    public boolean isSkipped;
-
+    private LambdaInfo lambda;
     //in case when parameter could be extracted from outer context (e.g. from local var)
     private StackValue remapValue;
 
-    public LambdaInfo lambda;
-
-    ParameterInfo(Type type, boolean skipped, int index, int remapValue, int declarationIndex) {
+    public ParameterInfo(@NotNull Type type, boolean skipped, int index, int remapValue, int declarationIndex) {
         this(type, skipped, index, remapValue == -1 ? null : StackValue.local(remapValue, type), declarationIndex);
     }
 
-    ParameterInfo(@NotNull Type type, boolean skipped, int index, @Nullable StackValue remapValue, int declarationIndex) {
+    public ParameterInfo(@NotNull Type type, boolean skipped, int index, @Nullable StackValue remapValue, int declarationIndex) {
         this.type = type;
         this.isSkipped = skipped;
         this.remapValue = remapValue;
@@ -52,7 +46,7 @@ class ParameterInfo {
     }
 
     public boolean isSkippedOrRemapped() {
-        return isSkipped || remapValue != null;
+        return isSkipped || isRemapped();
     }
 
     public boolean isRemapped() {
@@ -68,10 +62,6 @@ class ParameterInfo {
         return index;
     }
 
-    public boolean isSkipped() {
-        return isSkipped;
-    }
-
     @NotNull
     public Type getType() {
         return type;
@@ -82,12 +72,14 @@ class ParameterInfo {
         return lambda;
     }
 
+    @NotNull
     public ParameterInfo setLambda(@Nullable LambdaInfo lambda) {
         this.lambda = lambda;
         return this;
     }
 
-    public ParameterInfo setRemapValue(StackValue remapValue) {
+    @NotNull
+    public ParameterInfo setRemapValue(@Nullable StackValue remapValue) {
         this.remapValue = remapValue;
         return this;
     }
@@ -96,13 +88,7 @@ class ParameterInfo {
         return isCaptured;
     }
 
-    public ParameterInfo setSkipped(boolean skipped) {
-        isSkipped = skipped;
-        return this;
-    }
-
     public void setCaptured(boolean isCaptured) {
         this.isCaptured = isCaptured;
     }
-
 }

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

@@ -45,7 +45,7 @@ internal class Parameters(val real: List<ParameterInfo>, val captured: List<Capt
         }
     }
 
-    fun getDeclarationSlot(info : ParameterInfo): Int {
+    fun getDeclarationSlot(info: ParameterInfo): Int {
         return paramToDeclByteCodeIndex[info]!!
     }
 
@@ -54,10 +54,7 @@ internal class Parameters(val real: List<ParameterInfo>, val captured: List<Capt
     }
 
     private fun get(index: Int): ParameterInfo {
-        if (index < real.size) {
-            return real.get(index)
-        }
-        return captured.get(index - real.size)
+        return real.getOrNull(index) ?: captured[index - real.size]
     }
 
     override fun iterator(): Iterator<ParameterInfo> {
@@ -71,7 +68,7 @@ internal class Parameters(val real: List<ParameterInfo>, val captured: List<Capt
 
     companion object {
         fun shift(capturedParams: List<CapturedParamInfo>, realSize: Int): List<CapturedParamInfo> {
-            return capturedParams.withIndex().map { it.value.newIndex(it.index+ realSize) }
+            return capturedParams.withIndex().map { it.value.newIndex(it.index + realSize) }
         }
     }
 }

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

@@ -18,13 +18,9 @@ package org.jetbrains.kotlin.codegen.inline
 
 import org.jetbrains.kotlin.codegen.StackValue
 import org.jetbrains.org.objectweb.asm.Type
-import java.lang.Deprecated
-
-import java.util.ArrayList
-import java.util.Collections
-
-internal class ParametersBuilder private constructor(){
+import java.util.*
 
+internal class ParametersBuilder private constructor() {
     private val valueAndHiddenParams = arrayListOf<ParameterInfo>()
     private val capturedParams = arrayListOf<CapturedParamInfo>()
     private var valueParamStart = 0
@@ -40,38 +36,31 @@ internal class ParametersBuilder private constructor(){
         return info
     }
 
-    fun addNextParameter(type: Type, skipped: Boolean, remapValue: StackValue?): ParameterInfo {
-        return addParameter(ParameterInfo(type, skipped, nextValueParameterIndex, remapValue, valueAndHiddenParams.size))
+    fun addNextParameter(type: Type, skipped: Boolean): ParameterInfo {
+        return addParameter(ParameterInfo(type, skipped, nextValueParameterIndex, null, valueAndHiddenParams.size))
     }
 
     fun addNextValueParameter(type: Type, skipped: Boolean, remapValue: StackValue?, parameterIndex: Int): ParameterInfo {
-        return addParameter(ParameterInfo(type, skipped, nextValueParameterIndex, remapValue,
-                                          if (parameterIndex == -1) valueAndHiddenParams.size else { parameterIndex + valueParamStart }))
+        return addParameter(ParameterInfo(
+                type, skipped, nextValueParameterIndex, remapValue,
+                if (parameterIndex == -1) valueAndHiddenParams.size else parameterIndex + valueParamStart
+        ))
     }
 
-    fun addCapturedParam(
-            original: CapturedParamInfo,
-            newFieldName: String): CapturedParamInfo {
-        val info = CapturedParamInfo(original.desc, newFieldName, original.isSkipped, nextCapturedIndex(), original.getIndex())
-        info.setLambda(original.getLambda())
+    fun addCapturedParam(original: CapturedParamInfo, newFieldName: String): CapturedParamInfo {
+        val info = CapturedParamInfo(original.desc, newFieldName, original.isSkipped, nextCapturedIndex(), original.index)
+        info.lambda = original.lambda
         return addCapturedParameter(info)
     }
 
-    private fun nextCapturedIndex(): Int {
-        return nextCaptured
+    private fun nextCapturedIndex(): Int = nextCaptured
+
+    fun addCapturedParam(desc: CapturedParamDesc, newFieldName: String): CapturedParamInfo {
+        return addCapturedParameter(CapturedParamInfo(desc, newFieldName, false, nextCapturedIndex(), null))
     }
 
-    fun addCapturedParam(
-            desc: CapturedParamDesc,
-            newFieldName: String): CapturedParamInfo {
-        val info = CapturedParamInfo(desc, newFieldName, false, nextCapturedIndex(), null)
-        return addCapturedParameter(info)
-    }
-
-    fun addCapturedParamCopy(
-            copyFrom: CapturedParamInfo): CapturedParamInfo {
-        val info = copyFrom.newIndex(nextCapturedIndex())
-        return addCapturedParameter(info)
+    fun addCapturedParamCopy(copyFrom: CapturedParamInfo): CapturedParamInfo {
+        return addCapturedParameter(copyFrom.newIndex(nextCapturedIndex()))
     }
 
     fun addCapturedParam(
@@ -80,11 +69,13 @@ internal class ParametersBuilder private constructor(){
             newFieldName: String,
             type: Type,
             skipped: Boolean,
-            original: ParameterInfo?): CapturedParamInfo {
-        val info = CapturedParamInfo(CapturedParamDesc.createDesc(containingLambda, fieldName, type), newFieldName, skipped, nextCapturedIndex(),
-                                     if (original != null) original.getIndex() else -1)
+            original: ParameterInfo?
+    ): CapturedParamInfo {
+        val info = CapturedParamInfo(
+                CapturedParamDesc(containingLambda, fieldName, type), newFieldName, skipped, nextCapturedIndex(), original?.index ?: -1
+        )
         if (original != null) {
-            info.setLambda(original.getLambda())
+            info.lambda = original.lambda
         }
         return addCapturedParameter(info)
     }
@@ -101,7 +92,7 @@ internal class ParametersBuilder private constructor(){
         return info
     }
 
-    fun markValueParametesStart(){
+    fun markValueParametersStart() {
         this.valueParamStart = valueAndHiddenParams.size
     }
 
@@ -119,23 +110,24 @@ internal class ParametersBuilder private constructor(){
     }
 
     companion object {
-
         @JvmStatic
         fun newBuilder(): ParametersBuilder {
             return ParametersBuilder()
         }
 
-        @JvmOverloads @JvmStatic
-        fun initializeBuilderFrom(objectType: Type, descriptor: String, inlineLambda: LambdaInfo? = null, addThis: Boolean = true): ParametersBuilder {
+        @JvmOverloads
+        @JvmStatic
+        fun initializeBuilderFrom(
+                objectType: Type, descriptor: String, inlineLambda: LambdaInfo? = null, addThis: Boolean = true
+        ): ParametersBuilder {
             val builder = newBuilder()
             if (addThis) {
                 //skipped this for inlined lambda cause it will be removed
-                builder.addThis(objectType, inlineLambda != null).setLambda(inlineLambda)
+                builder.addThis(objectType, inlineLambda != null).lambda = inlineLambda
             }
 
-            val types = Type.getArgumentTypes(descriptor)
-            for (type in types) {
-                builder.addNextParameter(type, false, null)
+            for (type in Type.getArgumentTypes(descriptor)) {
+                builder.addNextParameter(type, false)
             }
             return builder
         }

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

@@ -23,7 +23,7 @@ import org.jetbrains.kotlin.codegen.state.GenerationState;
 import java.util.Map;
 
 public class RegeneratedClassContext extends InliningContext {
-    private InlineCallSiteInfo callSiteInfo;
+    private final InlineCallSiteInfo callSiteInfo;
 
     public RegeneratedClassContext(
             @Nullable InliningContext parent,
@@ -39,6 +39,8 @@ public class RegeneratedClassContext extends InliningContext {
         this.callSiteInfo = callSiteInfo;
     }
 
+    @NotNull
+    @Override
     public InlineCallSiteInfo getCallSiteInfo() {
         return callSiteInfo;
     }

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

@@ -34,11 +34,11 @@ public class RegeneratedLambdaFieldRemapper extends FieldRemapper {
     private final boolean isConstructor;
 
     public RegeneratedLambdaFieldRemapper(
-            String oldOwnerType,
-            String newOwnerType,
-            Parameters parameters,
-            Map<String, LambdaInfo> recapturedLambdas,
-            FieldRemapper remapper,
+            @NotNull String oldOwnerType,
+            @NotNull String newOwnerType,
+            @NotNull Parameters parameters,
+            @NotNull Map<String, LambdaInfo> recapturedLambdas,
+            @NotNull FieldRemapper remapper,
             boolean isConstructor
     ) {
         super(oldOwnerType, remapper, parameters);
@@ -50,12 +50,12 @@ public class RegeneratedLambdaFieldRemapper extends FieldRemapper {
     }
 
     @Override
-    public boolean canProcess(@NotNull String fieldOwner, String fieldName, boolean isFolding) {
+    public boolean canProcess(@NotNull String fieldOwner, @NotNull String fieldName, boolean isFolding) {
         return super.canProcess(fieldOwner, fieldName, isFolding) || isRecapturedLambdaType(fieldOwner, isFolding);
     }
 
-    private boolean isRecapturedLambdaType(String owner, boolean isFolding) {
-        return recapturedLambdas.containsKey(owner)  && (isFolding || false == parent instanceof InlinedLambdaRemapper);
+    private boolean isRecapturedLambdaType(@NotNull String owner, boolean isFolding) {
+        return recapturedLambdas.containsKey(owner) && (isFolding || !(parent instanceof InlinedLambdaRemapper));
     }
 
     @Nullable
@@ -64,9 +64,8 @@ public class RegeneratedLambdaFieldRemapper extends FieldRemapper {
         boolean searchInParent = !canProcess(fieldInsnNode.owner, fieldInsnNode.name, false);
         if (searchInParent) {
             return parent.findField(fieldInsnNode);
-        } else {
-            return findFieldInMyCaptured(fieldInsnNode);
         }
+        return findFieldInMyCaptured(fieldInsnNode);
     }
 
     @Override
@@ -75,10 +74,11 @@ public class RegeneratedLambdaFieldRemapper extends FieldRemapper {
     }
 
     @Nullable
-    public CapturedParamInfo findFieldInMyCaptured(@NotNull FieldInsnNode fieldInsnNode) {
+    private CapturedParamInfo findFieldInMyCaptured(@NotNull FieldInsnNode fieldInsnNode) {
         return super.findField(fieldInsnNode, parameters.getCaptured());
     }
 
+    @NotNull
     @Override
     public String getNewLambdaInternalName() {
         return newOwnerType;
@@ -98,18 +98,23 @@ public class RegeneratedLambdaFieldRemapper extends FieldRemapper {
 
         boolean searchInParent = false;
         if (field == null) {
-            field = findFieldInMyCaptured(new FieldInsnNode(Opcodes.GETSTATIC, oldOwnerType, "this$0", Type.getObjectType(parent.getLambdaInternalName()).getDescriptor()));
+            field = findFieldInMyCaptured(new FieldInsnNode(
+                    Opcodes.GETSTATIC, oldOwnerType, InlineCodegenUtil.THIS$0,
+                    Type.getObjectType(parent.getLambdaInternalName()).getDescriptor()
+            ));
             searchInParent = true;
             if (field == null) {
                 throw new IllegalStateException("Couldn't find captured this " + getLambdaInternalName() + " for " + node.name);
             }
         }
 
-        StackValue result = StackValue.field(field.isSkipped ?
-                                             Type.getObjectType(parent.parent.getNewLambdaInternalName()) : field.getType(),
-                                             Type.getObjectType(getNewLambdaInternalName()), /*TODO owner type*/
-                                             field.getNewFieldName(), false,
-                                             prefix == null ? StackValue.LOCAL_0 : prefix);
+        StackValue result = StackValue.field(
+                field.isSkipped ?
+                Type.getObjectType(parent.parent.getNewLambdaInternalName()) : field.getType(),
+                Type.getObjectType(getNewLambdaInternalName()), /*TODO owner type*/
+                field.getNewFieldName(), false,
+                prefix == null ? StackValue.LOCAL_0 : prefix
+        );
 
         return searchInParent ? parent.getFieldForInline(node, result) : result;
     }

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

@@ -39,7 +39,8 @@ class ReificationArgument(
             ReificationArgument(
                     replacement.parameterName,
                     this.nullable || (replacement.nullable && this.arrayDepth == 0),
-                    this.arrayDepth + replacement.arrayDepth)
+                    this.arrayDepth + replacement.arrayDepth
+            )
 
     fun reify(replacementAsmType: Type, kotlinType: KotlinType) =
             Pair(Type.getType("[".repeat(arrayDepth) + replacementAsmType), kotlinType.arrayOf(arrayDepth).makeNullableIfNeeded(nullable))
@@ -57,7 +58,6 @@ class ReificationArgument(
 }
 
 class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?) {
-
     enum class OperationKind {
         NEW_ARRAY, AS, SAFE_AS, IS, JAVA_CLASS;
 
@@ -65,8 +65,8 @@ class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?)
     }
 
     companion object {
-        @JvmField val REIFIED_OPERATION_MARKER_METHOD_NAME = "reifiedOperationMarker"
-        @JvmField val NEED_CLASS_REIFICATION_MARKER_METHOD_NAME = "needClassReification"
+        const val REIFIED_OPERATION_MARKER_METHOD_NAME = "reifiedOperationMarker"
+        const val NEED_CLASS_REIFICATION_MARKER_METHOD_NAME = "needClassReification"
 
         private fun isOperationReifiedMarker(insn: AbstractInsnNode) =
                 isReifiedMarker(insn) { it == REIFIED_OPERATION_MARKER_METHOD_NAME }
@@ -76,10 +76,12 @@ class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?)
             return insn.owner == IntrinsicMethods.INTRINSICS_CLASS_NAME && namePredicate(insn.name)
         }
 
-        @JvmStatic fun isNeedClassReificationMarker(insn: AbstractInsnNode): Boolean =
+        @JvmStatic
+        fun isNeedClassReificationMarker(insn: AbstractInsnNode): Boolean =
                 isReifiedMarker(insn) { s -> s == NEED_CLASS_REIFICATION_MARKER_METHOD_NAME }
 
-        @JvmStatic fun putNeedClassReificationMarker(v: MethodVisitor) {
+        @JvmStatic
+        fun putNeedClassReificationMarker(v: MethodVisitor) {
             v.visitMethodInsn(
                     Opcodes.INVOKESTATIC,
                     IntrinsicMethods.INTRINSICS_CLASS_NAME, NEED_CLASS_REIFICATION_MARKER_METHOD_NAME,
@@ -102,7 +104,7 @@ class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?)
 
         val instructions = node.instructions
         maxStackSize = 0
-        var result = ReifiedTypeParametersUsages()
+        val result = ReifiedTypeParametersUsages()
         for (insn in instructions.toArray()) {
             if (isOperationReifiedMarker(insn)) {
                 val newName: String? = processReifyMarker(insn as MethodInsnNode, instructions)
@@ -144,7 +146,8 @@ class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?)
             }
 
             return null
-        } else {
+        }
+        else {
             val newReificationArgument = reificationArgument.combine(mapping.reificationArgument!!)
             instructions.set(insn.previous!!, LdcInsnNode(newReificationArgument.asString()))
             return mapping.reificationArgument.parameterName
@@ -154,43 +157,45 @@ class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?)
     private fun processNewArray(insn: MethodInsnNode, parameter: Type) =
             processNextTypeInsn(insn, parameter, Opcodes.ANEWARRAY)
 
-    private fun processAs(insn: MethodInsnNode,
-                          instructions: InsnList,
-                          kotlinType: KotlinType,
-                          asmType: Type,
-                          safe: Boolean) =
-            rewriteNextTypeInsn(insn, Opcodes.CHECKCAST) { stubCheckcast: AbstractInsnNode ->
-                if (stubCheckcast !is TypeInsnNode) return false
+    private fun processAs(
+            insn: MethodInsnNode,
+            instructions: InsnList,
+            kotlinType: KotlinType,
+            asmType: Type,
+            safe: Boolean
+    ) = rewriteNextTypeInsn(insn, Opcodes.CHECKCAST) { stubCheckcast: AbstractInsnNode ->
+        if (stubCheckcast !is TypeInsnNode) return false
 
-                val newMethodNode = MethodNode(InlineCodegenUtil.API)
-                generateAsCast(InstructionAdapter(newMethodNode), kotlinType, asmType, safe)
+        val newMethodNode = MethodNode(InlineCodegenUtil.API)
+        generateAsCast(InstructionAdapter(newMethodNode), kotlinType, asmType, safe)
 
-                instructions.insert(insn, newMethodNode.instructions)
-                instructions.remove(stubCheckcast)
+        instructions.insert(insn, newMethodNode.instructions)
+        instructions.remove(stubCheckcast)
 
-                // TODO: refine max stack calculation (it's not always as big as +4)
-                maxStackSize = Math.max(maxStackSize, 4)
+        // TODO: refine max stack calculation (it's not always as big as +4)
+        maxStackSize = Math.max(maxStackSize, 4)
 
-                return true
-            }
+        return true
+    }
 
-    private fun processIs(insn: MethodInsnNode,
-                          instructions: InsnList,
-                          kotlinType: KotlinType,
-                          asmType: Type) =
-            rewriteNextTypeInsn(insn, Opcodes.INSTANCEOF) { stubInstanceOf: AbstractInsnNode ->
-                if (stubInstanceOf !is TypeInsnNode) return false
+    private fun processIs(
+            insn: MethodInsnNode,
+            instructions: InsnList,
+            kotlinType: KotlinType,
+            asmType: Type
+    ) = rewriteNextTypeInsn(insn, Opcodes.INSTANCEOF) { stubInstanceOf: AbstractInsnNode ->
+        if (stubInstanceOf !is TypeInsnNode) return false
 
-                val newMethodNode = MethodNode(InlineCodegenUtil.API)
-                generateIsCheck(InstructionAdapter(newMethodNode), kotlinType, asmType)
+        val newMethodNode = MethodNode(InlineCodegenUtil.API)
+        generateIsCheck(InstructionAdapter(newMethodNode), kotlinType, asmType)
 
-                instructions.insert(insn, newMethodNode.instructions)
-                instructions.remove(stubInstanceOf)
+        instructions.insert(insn, newMethodNode.instructions)
+        instructions.remove(stubInstanceOf)
 
-                // TODO: refine max stack calculation (it's not always as big as +2)
-                maxStackSize = Math.max(maxStackSize, 2)
-                return true
-            }
+        // TODO: refine max stack calculation (it's not always as big as +2)
+        maxStackSize = Math.max(maxStackSize, 2)
+        return true
+    }
 
     inline private fun rewriteNextTypeInsn(
             marker: MethodInsnNode,
@@ -214,7 +219,6 @@ class ReifiedTypeInliner(private val parametersMapping: TypeParameterMappings?)
         next.cst = parameter
         return true
     }
-
 }
 
 private val MethodInsnNode.reificationArgument: ReificationArgument?
@@ -242,16 +246,18 @@ class TypeParameterMappings() {
     private val mappingsByName = hashMapOf<String, TypeParameterMapping>()
 
     fun addParameterMappingToType(name: String, type: KotlinType, asmType: Type, signature: String, isReified: Boolean) {
-        mappingsByName[name] =  TypeParameterMapping(name, type, asmType, reificationArgument = null, signature = signature, isReified = isReified)
+        mappingsByName[name] = TypeParameterMapping(
+                name, type, asmType, reificationArgument = null, signature = signature, isReified = isReified
+        )
     }
 
     fun addParameterMappingForFurtherReification(name: String, type: KotlinType, reificationArgument: ReificationArgument, isReified: Boolean) {
-        mappingsByName[name] = TypeParameterMapping(name, type, asmType = null, reificationArgument = reificationArgument, signature = null, isReified = isReified)
+        mappingsByName[name] = TypeParameterMapping(
+                name, type, asmType = null, reificationArgument = reificationArgument, signature = null, isReified = isReified
+        )
     }
 
-    operator fun get(name: String): TypeParameterMapping? {
-        return mappingsByName[name]
-    }
+    operator fun get(name: String): TypeParameterMapping? = mappingsByName[name]
 
     fun hasReifiedParameters() = mappingsByName.values.any { it.isReified }
 
@@ -261,7 +267,8 @@ class TypeParameterMappings() {
 }
 
 class TypeParameterMapping(
-        val name: String, val type: KotlinType,
+        val name: String,
+        val type: KotlinType,
         val asmType: Type?,
         val reificationArgument: ReificationArgument?,
         val signature: String?,

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

@@ -28,14 +28,14 @@ public class RemapVisitor extends MethodBodyVisitor {
     private final FieldRemapper nodeRemapper;
     private final InstructionAdapter instructionAdapter;
 
-    protected RemapVisitor(
-            MethodVisitor mv,
-            LocalVarRemapper localVarRemapper,
-            FieldRemapper nodeRemapper
+    public RemapVisitor(
+            @NotNull MethodVisitor mv,
+            @NotNull LocalVarRemapper remapper,
+            @NotNull FieldRemapper nodeRemapper
     ) {
         super(mv);
         this.instructionAdapter = new InstructionAdapter(mv);
-        this.remapper = localVarRemapper;
+        this.remapper = remapper;
         this.nodeRemapper = nodeRemapper;
     }
 
@@ -58,19 +58,13 @@ public class RemapVisitor extends MethodBodyVisitor {
 
     @Override
     public void visitFieldInsn(int opcode, @NotNull String owner, @NotNull String name, @NotNull String desc) {
-        if (name.startsWith("$$$")) {
-            if (nodeRemapper instanceof RegeneratedLambdaFieldRemapper || nodeRemapper.isRoot()) {
-                FieldInsnNode fin = new FieldInsnNode(opcode, owner, name, desc);
-                StackValue inline = nodeRemapper.getFieldForInline(fin, null);
-                assert inline != null : "Captured field should have not null stackValue " + fin;
-                inline.put(inline.type, this);
-            }
-            else {
-                super.visitFieldInsn(opcode, owner, name, desc);
-            }
-        }
-        else {
-            super.visitFieldInsn(opcode, owner, name, desc);
+        if (name.startsWith("$$$") && (nodeRemapper instanceof RegeneratedLambdaFieldRemapper || nodeRemapper.isRoot())) {
+            FieldInsnNode fin = new FieldInsnNode(opcode, owner, name, desc);
+            StackValue inline = nodeRemapper.getFieldForInline(fin, null);
+            assert inline != null : "Captured field should have not null stackValue " + fin;
+            inline.put(inline.type, this);
+            return;
         }
+        super.visitFieldInsn(opcode, owner, name, desc);
     }
 }

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

@@ -25,7 +25,6 @@ import org.jetbrains.kotlin.psi.KtElement;
 import java.util.Map;
 
 public class RootInliningContext extends InliningContext {
-    public final CodegenContext startContext;
     private final InlineCallSiteInfo inlineCallSiteInfo;
     public final TypeParameterMappings typeParameterMappings;
     public final KtElement callElement;
@@ -34,7 +33,6 @@ public class RootInliningContext extends InliningContext {
             @NotNull Map<Integer, LambdaInfo> map,
             @NotNull GenerationState state,
             @NotNull NameGenerator nameGenerator,
-            @NotNull CodegenContext startContext,
             @NotNull KtElement callElement,
             @NotNull InlineCallSiteInfo classNameToInline,
             @NotNull ReifiedTypeInliner inliner,
@@ -42,11 +40,11 @@ public class RootInliningContext extends InliningContext {
     ) {
         super(null, map, state, nameGenerator, TypeRemapper.createRoot(typeParameterMappings), inliner, false, false);
         this.callElement = callElement;
-        this.startContext = startContext;
         this.inlineCallSiteInfo = classNameToInline;
         this.typeParameterMappings = typeParameterMappings;
     }
 
+    @NotNull
     @Override
     public InlineCallSiteInfo getCallSiteInfo() {
         return inlineCallSiteInfo;

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

@@ -55,7 +55,9 @@ class SMAPBuilder(
         val combinedMapping = FileMapping(source, path)
         realMappings.forEach { fileMapping ->
             fileMapping.lineMappings.filter { it.callSiteMarker != null }.forEach { rangeMapping ->
-                combinedMapping.addRangeMapping(RangeMapping(rangeMapping.callSiteMarker!!.lineNumber, rangeMapping.dest, rangeMapping.range))
+                combinedMapping.addRangeMapping(RangeMapping(
+                        rangeMapping.callSiteMarker!!.lineNumber, rangeMapping.dest, rangeMapping.range
+                ))
             }
         }
 
@@ -95,9 +97,11 @@ open class NestedSourceMapper(
 
         if (mappedLineNumber > 0) {
             return mappedLineNumber
-        } else {
-            val rangeForMapping = (if (lastVisitedRange?.contains(lineNumber) ?: false) lastVisitedRange!! else findMappingIfExists(lineNumber))
-                                  ?: error("Can't find range to map line $lineNumber in ${sourceInfo.source}:${sourceInfo.pathOrCleanFQN}")
+        }
+        else {
+            val rangeForMapping =
+                    (if (lastVisitedRange?.contains(lineNumber) ?: false) lastVisitedRange!! else findMappingIfExists(lineNumber))
+                    ?: error("Can't find range to map line $lineNumber in ${sourceInfo.source}: ${sourceInfo.pathOrCleanFQN}")
             val sourceLineNumber = rangeForMapping.mapDestToSource(lineNumber)
             val newLineNumber = parent.mapLineNumber(sourceLineNumber, rangeForMapping.parent!!.name, rangeForMapping.parent!!.path)
             if (newLineNumber > 0) {
@@ -132,9 +136,7 @@ open class InlineLambdaSourceMapper(
             //don't remap origin lambda line numbers
             return lineNumber
         }
-        else {
-            return super.mapLineNumber(lineNumber)
-        }
+        return super.mapLineNumber(lineNumber)
     }
 }
 
@@ -152,7 +154,6 @@ interface SourceMapper {
     }
 
     fun endMapping() {
-
     }
 
     companion object {
@@ -179,11 +180,8 @@ object IdenticalSourceMapper : SourceMapper {
 class CallSiteMarker(val lineNumber: Int)
 
 open class DefaultSourceMapper(val sourceInfo: SourceInfo) : SourceMapper {
-
     private var maxUsedValue: Int = sourceInfo.linesInFile
-
     private var lastMappedWithChanges: RawFileMapping? = null
-
     private var fileMappings: LinkedHashMap<String, RawFileMapping> = linkedMapOf()
 
     protected val origin: RawFileMapping
@@ -197,7 +195,6 @@ open class DefaultSourceMapper(val sourceInfo: SourceInfo) : SourceMapper {
     override val resultMappings: List<FileMapping>
         get() = fileMappings.values.map { it.toFileMapping() }
 
-
     init {
         val name = sourceInfo.source
         val path = sourceInfo.pathOrCleanFQN
@@ -206,8 +203,8 @@ open class DefaultSourceMapper(val sourceInfo: SourceInfo) : SourceMapper {
         fileMappings.put(createKey(name, path), origin)
     }
 
-    constructor(sourceInfo: SourceInfo, fileMappings: List<FileMapping>): this(sourceInfo) {
-       fileMappings.asSequence().drop(1)
+    constructor(sourceInfo: SourceInfo, fileMappings: List<FileMapping>) : this(sourceInfo) {
+        fileMappings.asSequence().drop(1)
                 //default one mapped through sourceInfo
                 .forEach { fileMapping ->
                     val newFileMapping = getOrRegisterNewSource(fileMapping.name, fileMapping.path)
@@ -227,7 +224,7 @@ open class DefaultSourceMapper(val sourceInfo: SourceInfo) : SourceMapper {
     override fun mapLineNumber(lineNumber: Int): Int {
         if (lineNumber < 0) {
             //no source information, so just skip this linenumber
-            return - 1
+            return -1
         }
         //TODO maybe add assertion that linenumber contained in fileMappings
         return lineNumber
@@ -238,8 +235,7 @@ open class DefaultSourceMapper(val sourceInfo: SourceInfo) : SourceMapper {
             //no source information, so just skip this linenumber
             return -1
         }
-        val mappedLineIndex = createMapping(getOrRegisterNewSource(sourceName, sourcePath), source)
-        return mappedLineIndex
+        return createMapping(getOrRegisterNewSource(sourceName, sourcePath), source)
     }
 
     private fun createMapping(fileMapping: RawFileMapping, lineNumber: Int): Int {
@@ -263,6 +259,7 @@ class SMAP(val fileMappings: List<FileMapping>) {
     val intervals = fileMappings.flatMap { it.lineMappings }.sortedWith(RangeMapping.Comparator)
 
     val sourceInfo: SourceInfo
+
     init {
         val defaultMapping = default.lineMappings.first()
         sourceInfo = SourceInfo(default.name, default.path, defaultMapping.source + defaultMapping.range - 1)
@@ -349,7 +346,7 @@ data class RangeMapping(val source: Int, val dest: Int, var range: Int = 1, var
         get() = dest + range - 1
 
     operator fun contains(destLine: Int): Boolean {
-        return if (skip) true else dest <= destLine && destLine < dest + range
+        return skip || (dest <= destLine && destLine < dest + range)
     }
 
     fun mapDestToSource(destLine: Int): Int {
@@ -365,12 +362,7 @@ data class RangeMapping(val source: Int, val dest: Int, var range: Int = 1, var
             if (o1 == o2) return 0
 
             val res = o1.dest - o2.dest
-            if (res == 0) {
-                return o1.range - o2.range
-            }
-            else {
-                return res
-            }
+            return if (res == 0) o1.range - o2.range else res
         }
     }
 

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

@@ -64,7 +64,7 @@ object SMAPParser {
             /*only simple mapping now*/
             val targetSplit = lineMapping.indexOf(':')
             val originalPart = lineMapping.substring(0, targetSplit)
-            var rangeSeparator = originalPart.indexOf(',').let { if (it < 0) targetSplit else it }
+            val rangeSeparator = originalPart.indexOf(',').let { if (it < 0) targetSplit else it }
 
             val fileSeparator = lineMapping.indexOf('#')
             val originalIndex = originalPart.substring(0, fileSeparator).toInt()

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

@@ -17,10 +17,8 @@
 package org.jetbrains.kotlin.codegen.inline
 
 import org.jetbrains.org.objectweb.asm.tree.FieldInsnNode
-import java.util.*
 
 interface TransformationInfo {
-
     val oldClassName: String
 
     val newClassName: String
@@ -29,10 +27,7 @@ interface TransformationInfo {
 
     fun canRemoveAfterTransformation(): Boolean
 
-    fun createTransformer(
-            inliningContext: InliningContext,
-            sameModule: Boolean
-    ): ObjectTransformer<*>
+    fun createTransformer(inliningContext: InliningContext, sameModule: Boolean): ObjectTransformer<*>
 }
 
 class WhenMappingTransformationInfo(
@@ -41,22 +36,17 @@ class WhenMappingTransformationInfo(
         val alreadyRegenerated: Boolean,
         val fieldNode: FieldInsnNode
 ) : TransformationInfo {
-
     override val newClassName by lazy {
-        nameGenerator.genWhenClassNamePrefix() + TRANSFORMED_WHEN_MAPPING_MARKER + oldClassName.substringAfterLast("/").substringAfterLast(TRANSFORMED_WHEN_MAPPING_MARKER)
+        nameGenerator.genWhenClassNamePrefix() + TRANSFORMED_WHEN_MAPPING_MARKER +
+        oldClassName.substringAfterLast("/").substringAfterLast(TRANSFORMED_WHEN_MAPPING_MARKER)
     }
 
-    override fun shouldRegenerate(sameModule: Boolean): Boolean {
-        return !alreadyRegenerated && !sameModule
-    }
+    override fun shouldRegenerate(sameModule: Boolean): Boolean = !alreadyRegenerated && !sameModule
 
-    override fun canRemoveAfterTransformation(): Boolean {
-        return true
-    }
+    override fun canRemoveAfterTransformation(): Boolean = true
 
-    override fun createTransformer(inliningContext: InliningContext, sameModule: Boolean): ObjectTransformer<*> {
-        return WhenMappingTransformer(this, inliningContext)
-    }
+    override fun createTransformer(inliningContext: InliningContext, sameModule: Boolean): ObjectTransformer<*> =
+            WhenMappingTransformer(this, inliningContext)
 
     companion object {
         const val TRANSFORMED_WHEN_MAPPING_MARKER = "\$wm$"
@@ -71,8 +61,8 @@ class AnonymousObjectTransformationInfo internal constructor(
         private val alreadyRegenerated: Boolean,
         val constructorDesc: String?,
         private val isStaticOrigin: Boolean,
-        nameGenerator: NameGenerator) : TransformationInfo {
-
+        nameGenerator: NameGenerator
+) : TransformationInfo {
     override val newClassName: String by lazy {
         nameGenerator.genLambdaClassName()
     }
@@ -89,14 +79,10 @@ class AnonymousObjectTransformationInfo internal constructor(
             alreadyRegenerated: Boolean,
             isStaticOrigin: Boolean,
             nameGenerator: NameGenerator
-    ) : this(
-            ownerInternalName, needReification,
-            HashMap<Int, LambdaInfo>(), false, alreadyRegenerated, null, isStaticOrigin, nameGenerator) {
-    }
+    ) : this(ownerInternalName, needReification, hashMapOf(), false, alreadyRegenerated, null, isStaticOrigin, nameGenerator)
 
-    override fun shouldRegenerate(sameModule: Boolean): Boolean {
-        return !alreadyRegenerated && (!lambdasToInline.isEmpty() || !sameModule || capturedOuterRegenerated || needReification)
-    }
+    override fun shouldRegenerate(sameModule: Boolean): Boolean =
+            !alreadyRegenerated && (!lambdasToInline.isEmpty() || !sameModule || capturedOuterRegenerated || needReification)
 
     override fun canRemoveAfterTransformation(): Boolean {
         // Note: It is unsafe to remove anonymous class that is referenced by GETSTATIC within lambda
@@ -104,7 +90,6 @@ class AnonymousObjectTransformationInfo internal constructor(
         return !isStaticOrigin
     }
 
-    override fun createTransformer(inliningContext: InliningContext, sameModule: Boolean): ObjectTransformer<*> {
-        return AnonymousObjectTransformer(this, inliningContext, sameModule)
-    }
+    override fun createTransformer(inliningContext: InliningContext, sameModule: Boolean): ObjectTransformer<*> =
+            AnonymousObjectTransformer(this, inliningContext, sameModule)
 }

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

@@ -16,9 +16,9 @@
 
 package org.jetbrains.kotlin.codegen.inline
 
-import org.jetbrains.org.objectweb.asm.tree.TryCatchBlockNode
+import org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil.firstLabelInChain
 import org.jetbrains.org.objectweb.asm.tree.LabelNode
-import org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil.*
+import org.jetbrains.org.objectweb.asm.tree.TryCatchBlockNode
 
 enum class TryCatchPosition {
     START,
@@ -26,9 +26,9 @@ enum class TryCatchPosition {
     INNER
 }
 
-class SplitPair<out T: Interval>(val patchedPart: T, val newPart: T)
+class SplitPair<out T : Interval>(val patchedPart: T, val newPart: T)
 
-class SimpleInterval(override val startLabel: LabelNode, override val endLabel: LabelNode ) : Interval
+class SimpleInterval(override val startLabel: LabelNode, override val endLabel: LabelNode) : Interval
 
 interface Interval {
     val startLabel: LabelNode
@@ -36,20 +36,21 @@ interface Interval {
 
     /*note that some intervals are mutable */
     fun isEmpty(): Boolean = startLabel == endLabel
-
 }
 
-interface SplittableInterval<T: Interval> : Interval {
+interface SplittableInterval<out T : Interval> : Interval {
     fun split(splitBy: Interval, keepStart: Boolean): SplitPair<T>
 }
 
-
 interface IntervalWithHandler : Interval {
     val handler: LabelNode
     val type: String?
 }
 
-class TryCatchBlockNodeInfo(val node: TryCatchBlockNode, val onlyCopyNotProcess: Boolean) : IntervalWithHandler, SplittableInterval<TryCatchBlockNodeInfo> {
+class TryCatchBlockNodeInfo(
+        val node: TryCatchBlockNode,
+        val onlyCopyNotProcess: Boolean
+) : IntervalWithHandler, SplittableInterval<TryCatchBlockNodeInfo> {
     override val startLabel: LabelNode
         get() = node.start
     override val endLabel: LabelNode
@@ -77,16 +78,16 @@ class TryCatchBlockNodeInfo(val node: TryCatchBlockNode, val onlyCopyNotProcess:
     }
 }
 
-class TryCatchBlockNodePosition(val nodeInfo: TryCatchBlockNodeInfo, var position: TryCatchPosition) : IntervalWithHandler by nodeInfo {
-
-}
+class TryCatchBlockNodePosition(
+        val nodeInfo: TryCatchBlockNodeInfo,
+        var position: TryCatchPosition
+) : IntervalWithHandler by nodeInfo
 
 class TryBlockCluster<T : IntervalWithHandler>(val blocks: MutableList<T>) {
     val defaultHandler: T?
         get() = blocks.firstOrNull() { it.type == null }
 }
 
-
 fun <T : IntervalWithHandler> doClustering(blocks: List<T>): List<TryBlockCluster<T>> {
     data class TryBlockInterval(val startLabel: LabelNode, val endLabel: LabelNode)
 

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

@@ -16,16 +16,17 @@
 
 package org.jetbrains.kotlin.codegen.inline
 
-import java.util.HashMap
+import java.util.*
 
-class TypeParameter(val oldName: String, val  newName: String?, val isReified: Boolean, val signature: String?)
+class TypeParameter(val oldName: String, val newName: String?, val isReified: Boolean, val signature: String?)
 
 //typeMapping data could be changed outside through method processing
-class TypeRemapper private constructor(private val typeMapping: MutableMap<String, String>, val parent: TypeRemapper?, val isInlineLambda: Boolean = false) {
-
+class TypeRemapper private constructor(
+        private val typeMapping: MutableMap<String, String>,
+        val parent: TypeRemapper?,
+        val isInlineLambda: Boolean = false
+) {
     private var additionalMappings: MutableMap<String, String> = hashMapOf()
-
-
     private val typeParametersMapping: MutableMap<String, TypeParameter> = hashMapOf()
 
     fun addMapping(type: String, newType: String) {
@@ -37,11 +38,11 @@ class TypeRemapper private constructor(private val typeMapping: MutableMap<Strin
     }
 
     fun map(type: String): String {
-        return typeMapping[type] ?: additionalMappings?.get(type) ?: type
+        return typeMapping[type] ?: additionalMappings[type] ?: type
     }
 
     fun addAdditionalMappings(oldName: String, newName: String) {
-        additionalMappings!!.put(oldName, newName)
+        additionalMappings[oldName] = newName
     }
 
     fun registerTypeParameter(name: String) {
@@ -52,7 +53,9 @@ class TypeRemapper private constructor(private val typeMapping: MutableMap<Strin
     }
 
     fun registerTypeParameter(mapping: TypeParameterMapping) {
-        typeParametersMapping[mapping.name] = TypeParameter(mapping.name, mapping.reificationArgument?.parameterName, mapping.isReified, mapping.signature)
+        typeParametersMapping[mapping.name] = TypeParameter(
+                mapping.name, mapping.reificationArgument?.parameterName, mapping.isReified, mapping.signature
+        )
     }
 
     fun mapTypeParameter(name: String): TypeParameter? {
@@ -60,14 +63,13 @@ class TypeRemapper private constructor(private val typeMapping: MutableMap<Strin
     }
 
     companion object {
-
         @JvmStatic
         fun createRoot(formalTypeParameters: TypeParameterMappings?): TypeRemapper {
-            val typeRemapper = TypeRemapper(HashMap<String, String>(), null)
-            formalTypeParameters?.forEach {
-                typeRemapper.registerTypeParameter(it)
+            return TypeRemapper(HashMap<String, String>(), null).apply {
+                formalTypeParameters?.forEach {
+                    registerTypeParameter(it)
+                }
             }
-            return typeRemapper
         }
 
         @JvmStatic
@@ -82,9 +84,9 @@ class TypeRemapper private constructor(private val typeMapping: MutableMap<Strin
         }
 
         private fun createNewAndMerge(remapper: TypeRemapper, additionalTypeMappings: Map<String, String>): MutableMap<String, String> {
-            val map = HashMap(remapper.typeMapping)
-            map += additionalTypeMappings
-            return map
+            return HashMap(remapper.typeMapping).apply {
+                this += additionalTypeMappings
+            }
         }
     }
 }