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org.jetbrains.kotlin.codegen.inline.MethodInliner Maven / Gradle / Ivy
/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.codegen.inline;
import com.google.common.collect.Lists;
import com.intellij.util.ArrayUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.codegen.ClosureCodegen;
import org.jetbrains.kotlin.codegen.StackValue;
import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicMethods;
import org.jetbrains.kotlin.codegen.optimization.MandatoryMethodTransformer;
import org.jetbrains.kotlin.codegen.state.JetTypeMapper;
import org.jetbrains.kotlin.utils.SmartSet;
import org.jetbrains.org.objectweb.asm.Label;
import org.jetbrains.org.objectweb.asm.MethodVisitor;
import org.jetbrains.org.objectweb.asm.Opcodes;
import org.jetbrains.org.objectweb.asm.Type;
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
import org.jetbrains.org.objectweb.asm.commons.Method;
import org.jetbrains.org.objectweb.asm.commons.RemappingMethodAdapter;
import org.jetbrains.org.objectweb.asm.tree.*;
import org.jetbrains.org.objectweb.asm.tree.analysis.*;
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 JetTypeMapper typeMapper;
private final List invokeCalls = new ArrayList();
//keeps order
private final List anonymousObjectGenerations = new ArrayList();
//current state
private final Map currentTypeMapping = new HashMap();
private final InlineResult result;
private int lambdasFinallyBlocks;
/*
*
* @param node
* @param parameters
* @param inliningContext
* @param lambdaType - in case on lambda 'invoke' inlining
*/
public MethodInliner(
@NotNull MethodNode node,
@NotNull Parameters parameters,
@NotNull InliningContext inliningContext,
@NotNull FieldRemapper nodeRemapper,
boolean isSameModule,
@NotNull String errorPrefix,
@NotNull SourceMapper sourceMapper,
@NotNull InlineCallSiteInfo inlineCallSiteInfo
) {
this.node = node;
this.parameters = parameters;
this.inliningContext = inliningContext;
this.nodeRemapper = nodeRemapper;
this.isSameModule = isSameModule;
this.errorPrefix = errorPrefix;
this.sourceMapper = sourceMapper;
this.inlineCallSiteInfo = inlineCallSiteInfo;
this.typeMapper = inliningContext.state.getTypeMapper();
this.result = InlineResult.create();
}
public InlineResult doInline(
@NotNull MethodVisitor adapter,
@NotNull LocalVarRemapper remapper,
boolean remapReturn,
@NotNull LabelOwner labelOwner
) {
return doInline(adapter, remapper, remapReturn, labelOwner, 0);
}
private InlineResult doInline(
@NotNull MethodVisitor adapter,
@NotNull LocalVarRemapper remapper,
boolean remapReturn,
@NotNull LabelOwner labelOwner,
int finallyDeepShift
) {
//analyze body
MethodNode transformedNode = markPlacesForInlineAndRemoveInlinable(node, finallyDeepShift);
//substitute returns with "goto end" instruction to keep non local returns in lambdas
Label end = new Label();
transformedNode = doInline(transformedNode);
removeClosureAssertions(transformedNode);
InsnList instructions = transformedNode.instructions;
instructions.resetLabels();
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);
}
catch (Exception e) {
throw wrapException(e, transformedNode, "couldn't inline method call");
}
resultNode.visitLabel(end);
if (inliningContext.isRoot()) {
InternalFinallyBlockInliner.processInlineFunFinallyBlocks(resultNode, lambdasFinallyBlocks, ((StackValue.Local)remapper.remap(parameters.getArgsSizeOnStack() + 1).value).index);
}
processReturns(resultNode, labelOwner, remapReturn, end);
//flush transformed node to output
resultNode.accept(new InliningInstructionAdapter(adapter));
sourceMapper.endMapping();
return result;
}
private MethodNode doInline(final MethodNode node) {
final Deque currentInvokes = new LinkedList(invokeCalls);
final MethodNode resultNode = new MethodNode(node.access, node.name, node.desc, node.signature, null);
final Iterator iterator = anonymousObjectGenerations.iterator();
final TypeRemapper remapper = TypeRemapper.createFrom(currentTypeMapping);
RemappingMethodAdapter remappingMethodAdapter = new RemappingMethodAdapter(
resultNode.access,
resultNode.desc,
resultNode,
new AsmTypeRemapper(remapper, inliningContext.getRoot().typeParameterMappings == null, result)
);
final int markerShift = InlineCodegenUtil.calcMarkerShift(parameters, node);
InlineAdapter lambdaInliner = new InlineAdapter(remappingMethodAdapter, parameters.getArgsSizeOnStack(), sourceMapper) {
private AnonymousObjectGeneration anonymousObjectGen;
private void handleAnonymousObjectGeneration() {
anonymousObjectGen = iterator.next();
if (anonymousObjectGen.shouldRegenerate()) {
//TODO: need poping of type but what to do with local funs???
String oldClassName = anonymousObjectGen.getOwnerInternalName();
String newClassName = inliningContext.nameGenerator.genLambdaClassName();
remapper.addMapping(oldClassName, newClassName);
AnonymousObjectTransformer transformer =
new AnonymousObjectTransformer(oldClassName,
inliningContext
.subInlineWithClassRegeneration(
inliningContext.nameGenerator,
currentTypeMapping,
anonymousObjectGen,
inlineCallSiteInfo),
isSameModule, Type.getObjectType(newClassName)
);
InlineResult transformResult = transformer.doTransform(anonymousObjectGen, nodeRemapper);
result.addAllClassesToRemove(transformResult);
result.addChangedType(oldClassName, newClassName);
if (inliningContext.isInliningLambda && !anonymousObjectGen.isStaticOrigin()) {
// this class is transformed and original not used so we should remove original one after inlining
// Note: It is unsafe to remove anonymous class that is referenced by GETSTATIC within lambda
// because it can be local function from outer scope
result.addClassToRemove(oldClassName);
}
if (transformResult.getReifiedTypeParametersUsages().wereUsedReifiedParameters()) {
ReifiedTypeInliner.putNeedClassReificationMarker(mv);
result.getReifiedTypeParametersUsages().mergeAll(transformResult.getReifiedTypeParametersUsages());
}
}
}
@Override
public void anew(@NotNull Type type) {
if (isAnonymousConstructorCall(type.getInternalName(), "")) {
handleAnonymousObjectGeneration();
}
//in case of regenerated anonymousObjectGen type would be remapped to new one via remappingMethodAdapter
super.anew(type);
}
@Override
public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
if (/*INLINE_RUNTIME.equals(owner) &&*/ isInvokeOnLambda(owner, name)) { //TODO add method
assert !currentInvokes.isEmpty();
InvokeCall invokeCall = currentInvokes.remove();
LambdaInfo info = invokeCall.lambdaInfo;
if (info == null) {
//noninlinable lambda
super.visitMethodInsn(opcode, owner, name, desc, itf);
return;
}
int valueParamShift = Math.max(getNextLocalIndex(), markerShift);//NB: don't inline cause it changes
putStackValuesIntoLocals(info.getInvokeParamsWithoutCaptured(), valueParamShift, this, desc);
addInlineMarker(this, true);
Parameters lambdaParameters = info.addAllParameters(nodeRemapper);
InlinedLambdaRemapper newCapturedRemapper =
new InlinedLambdaRemapper(info.getLambdaClassType().getInternalName(), nodeRemapper, lambdaParameters);
setLambdaInlining(true);
SMAP lambdaSMAP = info.getNode().getClassSMAP();
SourceMapper mapper =
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);
LocalVarRemapper remapper = new LocalVarRemapper(lambdaParameters, valueParamShift);
InlineResult lambdaResult = inliner.doInline(this.mv, remapper, true, info, invokeCall.finallyDepthShift);//TODO add skipped this and receiver
result.addAllClassesToRemove(lambdaResult);
//return value boxing/unboxing
Method bridge =
typeMapper.mapSignature(ClosureCodegen.getErasedInvokeFunction(info.getFunctionDescriptor())).getAsmMethod();
Method delegate = typeMapper.mapSignature(info.getFunctionDescriptor()).getAsmMethod();
StackValue.onStack(delegate.getReturnType()).put(bridge.getReturnType(), this);
setLambdaInlining(false);
addInlineMarker(this, false);
mapper.endMapping();
}
else if (isAnonymousConstructorCall(owner, name)) { //TODO add method
assert anonymousObjectGen != null : " call not corresponds to new call" + owner + " " + name;
if (anonymousObjectGen.shouldRegenerate()) {
//put additional captured parameters on stack
for (CapturedParamDesc capturedParamDesc : anonymousObjectGen.getAllRecapturedParameters()) {
visitFieldInsn(Opcodes.GETSTATIC, capturedParamDesc.getContainingLambdaName(),
"$$$" + capturedParamDesc.getFieldName(), capturedParamDesc.getType().getDescriptor());
}
String newInternalName = anonymousObjectGen.getNewLambdaType().getInternalName();
super.visitMethodInsn(opcode, newInternalName, name, anonymousObjectGen.getNewConstructorDescriptor(), itf);
//TODO: add new inner class also for other contexts
if (inliningContext.getParent() instanceof RegeneratedClassContext) {
inliningContext.getParent().typeRemapper.addAdditionalMappings(anonymousObjectGen.getOwnerInternalName(), newInternalName);
}
anonymousObjectGen = null;
} else {
super.visitMethodInsn(opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
}
}
else if (ReifiedTypeInliner.isNeedClassReificationMarker(new MethodInsnNode(opcode, owner, name, desc, false)) &&
!isDefaultCompilation()) {
// we will put it if needed in anew processing
}
else {
super.visitMethodInsn(opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
}
}
@Override
public void visitFieldInsn(int opcode, @NotNull String owner, @NotNull String name, @NotNull String desc) {
if (opcode == Opcodes.GETSTATIC && isAnonymousSingletonLoad(owner, name)) {
handleAnonymousObjectGeneration();
}
super.visitFieldInsn(opcode, owner, name, desc);
}
@Override
public void visitMaxs(int stack, int locals) {
lambdasFinallyBlocks = resultNode.tryCatchBlocks.size();
super.visitMaxs(stack, locals);
}
};
node.accept(lambdaInliner);
return resultNode;
}
@NotNull
public static CapturedParamInfo findCapturedField(FieldInsnNode node, FieldRemapper fieldRemapper) {
assert node.name.startsWith("$$$") : "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());
}
return field;
}
@NotNull
public MethodNode prepareNode(@NotNull MethodNode node, int finallyDeepShift) {
final int capturedParamsSize = parameters.getCapturedArgsSizeOnStack();
final int realParametersSize = parameters.getRealArgsSizeOnStack();
Type[] types = Type.getArgumentTypes(node.desc);
Type returnType = Type.getReturnType(node.desc);
List capturedTypes = parameters.getCapturedTypes();
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) {
private final boolean isInliningLambda = nodeRemapper.isInsideInliningLambda();
private int getNewIndex(int var) {
return var + (var < realParametersSize ? 0 : capturedParamsSize);
}
@Override
public void visitVarInsn(int opcode, int var) {
super.visitVarInsn(opcode, getNewIndex(var));
}
@Override
public void visitIincInsn(int var, int increment) {
super.visitIincInsn(getNewIndex(var), increment);
}
@Override
public void visitMaxs(int maxStack, int maxLocals) {
super.visitMaxs(maxStack, maxLocals + capturedParamsSize);
}
@Override
public void visitLineNumber(int line, @NotNull Label start) {
if(isInliningLambda || InlineCodegenUtil.GENERATE_SMAP) {
super.visitLineNumber(line, start);
}
}
@Override
public void visitLocalVariable(
@NotNull String name, @NotNull String desc, String signature, @NotNull Label start, @NotNull Label end, int index
) {
if (isInliningLambda || InlineCodegenUtil.GENERATE_SMAP) {
String varSuffix = inliningContext.isRoot() &&
!isDefaultCompilation() &&
!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));
}
}
};
node.accept(transformedNode);
transformCaptured(transformedNode);
transformFinallyDeepIndex(transformedNode, finallyDeepShift);
return transformedNode;
}
@NotNull
protected MethodNode markPlacesForInlineAndRemoveInlinable(@NotNull MethodNode node, int finallyDeepShift) {
node = prepareNode(node, finallyDeepShift);
try {
new MandatoryMethodTransformer().transform("fake", node);
}
catch (Throwable e) {
throw wrapException(e, node, "couldn't inline method call");
}
Analyzer analyzer = new Analyzer(new SourceInterpreter()) {
@NotNull
@Override
protected Frame newFrame(
int nLocals, int nStack
) {
return new Frame(nLocals, nStack) {
@Override
public void execute(
@NotNull AbstractInsnNode insn, Interpreter interpreter
) throws AnalyzerException {
if (insn.getOpcode() == Opcodes.RETURN) {
//there is exception on void non local return in frame
return;
}
super.execute(insn, interpreter);
}
};
}
};
Frame[] sources;
try {
sources = analyzer.analyze("fake", node);
}
catch (AnalyzerException e) {
throw wrapException(e, node, "couldn't inline method call");
}
Set toDelete = SmartSet.create();
InsnList instructions = node.instructions;
AbstractInsnNode cur = instructions.getFirst();
boolean awaitClassReification = false;
int currentFinallyDeep = 0;
while (cur != null) {
Frame frame = sources[instructions.indexOf(cur)];
if (frame != null) {
if (ReifiedTypeInliner.isNeedClassReificationMarker(cur)) {
awaitClassReification = !isDefaultCompilation();
}
else if (cur.getType() == AbstractInsnNode.METHOD_INSN) {
if (InlineCodegenUtil.isFinallyStart(cur)) {
//TODO deep index calc could be more precise
currentFinallyDeep = InlineCodegenUtil.getConstant(cur.getPrevious());
}
MethodInsnNode methodInsnNode = (MethodInsnNode) cur;
String owner = methodInsnNode.owner;
String desc = methodInsnNode.desc;
String name = methodInsnNode.name;
//TODO check closure
Type[] argTypes = Type.getArgumentTypes(desc);
int paramCount = argTypes.length + 1;//non static
int firstParameterIndex = frame.getStackSize() - paramCount;
if (isInvokeOnLambda(owner, name) /*&& methodInsnNode.owner.equals(INLINE_RUNTIME)*/) {
SourceValue sourceValue = frame.getStack(firstParameterIndex);
LambdaInfo lambdaInfo = MethodInlinerUtilKt.getLambdaIfExistsAndMarkInstructions(
this, MethodInlinerUtilKt.singleOrNullInsn(sourceValue), true, instructions, sources, toDelete
);
invokeCalls.add(new InvokeCall(lambdaInfo, currentFinallyDeep));
}
else if (isAnonymousConstructorCall(owner, name)) {
Map lambdaMapping = new HashMap();
int offset = 0;
for (int i = 0; i < paramCount; i++) {
SourceValue sourceValue = frame.getStack(firstParameterIndex + i);
LambdaInfo lambdaInfo = MethodInlinerUtilKt.getLambdaIfExistsAndMarkInstructions(
this, MethodInlinerUtilKt.singleOrNullInsn(sourceValue), false, instructions, sources, toDelete
);
if (lambdaInfo != null) {
lambdaMapping.put(offset, lambdaInfo);
}
offset += i == 0 ? 1 : argTypes[i - 1].getSize();
}
anonymousObjectGenerations.add(
buildConstructorInvocation(
owner, desc, lambdaMapping, awaitClassReification
)
);
awaitClassReification = false;
}
}
else if (cur.getOpcode() == Opcodes.GETSTATIC) {
FieldInsnNode fieldInsnNode = (FieldInsnNode) cur;
String owner = fieldInsnNode.owner;
if (isAnonymousSingletonLoad(owner, fieldInsnNode.name)) {
anonymousObjectGenerations.add(
new AnonymousObjectGeneration(
owner, isSameModule, awaitClassReification, isAlreadyRegenerated(owner), true
)
);
awaitClassReification = false;
}
}
}
AbstractInsnNode prevNode = cur;
cur = cur.getNext();
//given frame is null if and only if the corresponding instruction cannot be reached (dead code).
if (frame == null) {
//clean dead code otherwise there is problems in unreachable finally block, don't touch label it cause try/catch/finally problems
if (prevNode.getType() == AbstractInsnNode.LABEL) {
//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 {
toDelete.add(prevNode);
}
}
}
for (AbstractInsnNode insnNode : toDelete) {
instructions.remove(insnNode);
}
//clean dead try/catch blocks
List blocks = node.tryCatchBlocks;
for (Iterator iterator = blocks.iterator(); iterator.hasNext(); ) {
TryCatchBlockNode block = iterator.next();
if (isEmptyTryInterval(block)) {
iterator.remove();
}
}
return node;
}
private static boolean isEmptyTryInterval(@NotNull TryCatchBlockNode tryCatchBlockNode) {
LabelNode start = tryCatchBlockNode.start;
AbstractInsnNode end = tryCatchBlockNode.end;
while (end != start && end instanceof LabelNode) {
end = end.getPrevious();
}
return start == end;
}
@NotNull
private AnonymousObjectGeneration buildConstructorInvocation(
@NotNull String owner,
@NotNull String desc,
@NotNull Map lambdaMapping,
boolean needReification
) {
return new AnonymousObjectGeneration(
owner, needReification, isSameModule, lambdaMapping,
inliningContext.classRegeneration,
isAlreadyRegenerated(owner),
desc,
false
);
}
private boolean isAlreadyRegenerated(@NotNull String owner) {
return inliningContext.typeRemapper.hasNoAdditionalMapping(owner);
}
@Nullable
LambdaInfo getLambdaIfExists(@Nullable AbstractInsnNode insnNode) {
if (insnNode == null) {
return null;
}
if (insnNode.getOpcode() == Opcodes.ALOAD) {
int varIndex = ((VarInsnNode) insnNode).var;
return getLambdaIfExists(varIndex);
}
else if (insnNode instanceof FieldInsnNode) {
FieldInsnNode fieldInsnNode = (FieldInsnNode) insnNode;
if (fieldInsnNode.name.startsWith("$$$")) {
return findCapturedField(fieldInsnNode, nodeRemapper).getLambda();
}
}
return null;
}
private LambdaInfo getLambdaIfExists(int varIndex) {
if (varIndex < parameters.getArgsSizeOnStack()) {
return parameters.getParameterByDeclarationSlot(varIndex).getLambda();
}
return null;
}
private static void removeClosureAssertions(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)) {
AbstractInsnNode prev = cur.getPrevious();
assert cur.getOpcode() == Opcodes.LDC : "checkParameterIsNotNull should go after LDC but " + cur;
assert prev.getOpcode() == Opcodes.ALOAD : "checkParameterIsNotNull should be invoked on local var but " + prev;
node.instructions.remove(prev);
node.instructions.remove(cur);
cur = next.getNext();
node.instructions.remove(next);
next = cur;
}
}
cur = next;
}
}
private void transformCaptured(@NotNull MethodNode node) {
if (nodeRemapper.isRoot()) {
return;
}
//Fold all captured variable chain - ALOAD 0 ALOAD this$0 GETFIELD $captured - to GETFIELD $$$$captured
//On future decoding this field could be inline or unfolded in another field access chain (it can differ in some missed this$0)
AbstractInsnNode cur = node.instructions.getFirst();
while (cur != null) {
if (cur instanceof VarInsnNode && cur.getOpcode() == Opcodes.ALOAD) {
int varIndex = ((VarInsnNode) cur).var;
if (varIndex == 0 || nodeRemapper.processNonAload0FieldAccessChains(getLambdaIfExists(varIndex) != null)) {
List accessChain = getCapturedFieldAccessChain((VarInsnNode) cur);
AbstractInsnNode insnNode = nodeRemapper.foldFieldAccessChainIfNeeded(accessChain, node);
if (insnNode != null) {
cur = insnNode;
}
}
}
cur = cur.getNext();
}
}
private static void transformFinallyDeepIndex(@NotNull MethodNode node, int finallyDeepShift) {
if (finallyDeepShift == 0) {
return;
}
AbstractInsnNode cur = node.instructions.getFirst();
while (cur != null) {
if (cur instanceof MethodInsnNode && InlineCodegenUtil.isFinallyMarker(cur)) {
AbstractInsnNode constant = cur.getPrevious();
int curDeep = InlineCodegenUtil.getConstant(constant);
node.instructions.insert(constant, new LdcInsnNode(curDeep + finallyDeepShift));
node.instructions.remove(constant);
}
cur = cur.getNext();
}
}
@NotNull
public static List getCapturedFieldAccessChain(@NotNull VarInsnNode aload0) {
List fieldAccessChain = new ArrayList();
fieldAccessChain.add(aload0);
AbstractInsnNode next = aload0.getNext();
while (next != null && next instanceof FieldInsnNode || next instanceof LabelNode) {
if (next instanceof LabelNode) {
next = next.getNext();
continue; //it will be delete on transformation
}
fieldAccessChain.add(next);
if ("this$0".equals(((FieldInsnNode) next).name)) {
next = next.getNext();
}
else {
break;
}
}
return fieldAccessChain;
}
public static void putStackValuesIntoLocals(List directOrder, int shift, InstructionAdapter iv, String descriptor) {
Type[] actualParams = Type.getArgumentTypes(descriptor);
assert actualParams.length == directOrder.size() : "Number of expected and actual params should be equals!";
int size = 0;
for (Type next : directOrder) {
size += next.getSize();
}
shift += size;
int index = directOrder.size();
for (Type next : Lists.reverse(directOrder)) {
shift -= next.getSize();
Type typeOnStack = actualParams[--index];
if (!typeOnStack.equals(next)) {
StackValue.onStack(typeOnStack).put(next, iv);
}
iv.store(shift, next);
}
}
//TODO: check it's external module
//TODO?: assert method exists in facade?
public String changeOwnerForExternalPackage(String type, int opcode) {
//if (isSameModule || (opcode & Opcodes.INVOKESTATIC) == 0) {
// return type;
//}
//JvmClassName name = JvmClassName.byInternalName(type);
//String packageClassInternalName = PackageClassUtils.getPackageClassInternalName(name.getPackageFqName());
//if (type.startsWith(packageClassInternalName + '$')) {
// 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) {
if (originalException instanceof InlineException) {
return new InlineException(errorPrefix + ": " + errorSuffix, originalException);
}
else {
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 processReturns(@NotNull MethodNode node, @NotNull LabelOwner labelOwner, boolean remapReturn, Label endLabel) {
if (!remapReturn) {
return Collections.emptyList();
}
List result = new ArrayList();
InsnList instructions = node.instructions;
AbstractInsnNode insnNode = instructions.getFirst();
while (insnNode != null) {
if (InlineCodegenUtil.isReturnOpcode(insnNode.getOpcode())) {
AbstractInsnNode previous = insnNode.getPrevious();
MethodInsnNode flagNode;
boolean isLocalReturn = true;
String labelName = null;
if (previous != null && previous instanceof MethodInsnNode && InlineCodegenUtil.NON_LOCAL_RETURN.equals(((MethodInsnNode) previous).owner)) {
flagNode = (MethodInsnNode) previous;
labelName = flagNode.name;
}
if (labelName != null) {
isLocalReturn = labelOwner.isMyLabel(labelName);
//remove global return flag
if (isLocalReturn) {
instructions.remove(previous);
}
}
if (isLocalReturn && endLabel != null) {
LabelNode labelNode = (LabelNode) endLabel.info;
JumpInsnNode jumpInsnNode = new JumpInsnNode(Opcodes.GOTO, labelNode);
instructions.insert(insnNode, jumpInsnNode);
instructions.remove(insnNode);
insnNode = jumpInsnNode;
}
//genetate 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));
}
insnNode = insnNode.getNext();
}
return result;
}
@NotNull
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 PointForExternalFinallyBlocks(
@NotNull AbstractInsnNode beforeIns,
@NotNull Type returnType,
@NotNull LabelNode finallyIntervalEnd
) {
this.beforeIns = beforeIns;
this.returnType = returnType;
this.finallyIntervalEnd = finallyIntervalEnd;
}
}
private boolean isDefaultCompilation() {
return inliningContext.isRoot() && ((RootInliningContext) inliningContext).isDefaultCompilation;
}
}
