001 /*
002 * Copyright 2010-2015 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017 package org.jetbrains.kotlin.codegen.inline;
018
019 import com.google.common.collect.Lists;
020 import com.intellij.util.ArrayUtil;
021 import org.jetbrains.annotations.NotNull;
022 import org.jetbrains.kotlin.codegen.ClosureCodegen;
023 import org.jetbrains.kotlin.codegen.StackValue;
024 import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicMethods;
025 import org.jetbrains.kotlin.codegen.optimization.MandatoryMethodTransformer;
026 import org.jetbrains.kotlin.codegen.state.JetTypeMapper;
027 import org.jetbrains.org.objectweb.asm.Label;
028 import org.jetbrains.org.objectweb.asm.MethodVisitor;
029 import org.jetbrains.org.objectweb.asm.Opcodes;
030 import org.jetbrains.org.objectweb.asm.Type;
031 import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
032 import org.jetbrains.org.objectweb.asm.commons.Method;
033 import org.jetbrains.org.objectweb.asm.commons.RemappingMethodAdapter;
034 import org.jetbrains.org.objectweb.asm.tree.*;
035 import org.jetbrains.org.objectweb.asm.tree.analysis.*;
036
037 import java.util.*;
038
039 import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtil.*;
040
041 public class MethodInliner {
042
043 private final MethodNode node;
044
045 private final Parameters parameters;
046
047 private final InliningContext inliningContext;
048
049 private final FieldRemapper nodeRemapper;
050
051 private final boolean isSameModule;
052
053 private final String errorPrefix;
054
055 private final SourceMapper sourceMapper;
056
057 private final JetTypeMapper typeMapper;
058
059 private final List<InvokeCall> invokeCalls = new ArrayList<InvokeCall>();
060
061 //keeps order
062 private final List<AnonymousObjectGeneration> anonymousObjectGenerations = new ArrayList<AnonymousObjectGeneration>();
063 //current state
064 private final Map<String, String> currentTypeMapping = new HashMap<String, String>();
065
066 private final InlineResult result;
067
068 private int lambdasFinallyBlocks;
069
070 /*
071 *
072 * @param node
073 * @param parameters
074 * @param inliningContext
075 * @param lambdaType - in case on lambda 'invoke' inlining
076 */
077 public MethodInliner(
078 @NotNull MethodNode node,
079 @NotNull Parameters parameters,
080 @NotNull InliningContext parent,
081 @NotNull FieldRemapper nodeRemapper,
082 boolean isSameModule,
083 @NotNull String errorPrefix,
084 @NotNull SourceMapper sourceMapper
085 ) {
086 this.node = node;
087 this.parameters = parameters;
088 this.inliningContext = parent;
089 this.nodeRemapper = nodeRemapper;
090 this.isSameModule = isSameModule;
091 this.errorPrefix = errorPrefix;
092 this.sourceMapper = sourceMapper;
093 this.typeMapper = parent.state.getTypeMapper();
094 this.result = InlineResult.create();
095 }
096
097 public InlineResult doInline(
098 @NotNull MethodVisitor adapter,
099 @NotNull LocalVarRemapper remapper,
100 boolean remapReturn,
101 @NotNull LabelOwner labelOwner
102 ) {
103 return doInline(adapter, remapper, remapReturn, labelOwner, 0);
104 }
105
106 private InlineResult doInline(
107 @NotNull MethodVisitor adapter,
108 @NotNull LocalVarRemapper remapper,
109 boolean remapReturn,
110 @NotNull LabelOwner labelOwner,
111 int finallyDeepShift
112 ) {
113 //analyze body
114 MethodNode transformedNode = markPlacesForInlineAndRemoveInlinable(node, finallyDeepShift);
115
116 //substitute returns with "goto end" instruction to keep non local returns in lambdas
117 Label end = new Label();
118 transformedNode = doInline(transformedNode);
119 removeClosureAssertions(transformedNode);
120 InsnList instructions = transformedNode.instructions;
121 instructions.resetLabels();
122
123 MethodNode resultNode = new MethodNode(InlineCodegenUtil.API, transformedNode.access, transformedNode.name, transformedNode.desc,
124 transformedNode.signature, ArrayUtil.toStringArray(transformedNode.exceptions));
125 RemapVisitor visitor = new RemapVisitor(resultNode, remapper, nodeRemapper);
126 try {
127 transformedNode.accept(visitor);
128 }
129 catch (Exception e) {
130 throw wrapException(e, transformedNode, "couldn't inline method call");
131 }
132
133 resultNode.visitLabel(end);
134
135 if (inliningContext.isRoot()) {
136 InternalFinallyBlockInliner.processInlineFunFinallyBlocks(resultNode, lambdasFinallyBlocks, ((StackValue.Local)remapper.remap(parameters.getArgsSizeOnStack() + 1).value).index);
137 }
138
139 processReturns(resultNode, labelOwner, remapReturn, end);
140 //flush transformed node to output
141 resultNode.accept(new InliningInstructionAdapter(adapter));
142
143 sourceMapper.endMapping();
144 return result;
145 }
146
147 private MethodNode doInline(MethodNode node) {
148
149 final Deque<InvokeCall> currentInvokes = new LinkedList<InvokeCall>(invokeCalls);
150
151 final MethodNode resultNode = new MethodNode(node.access, node.name, node.desc, node.signature, null);
152
153 final Iterator<AnonymousObjectGeneration> iterator = anonymousObjectGenerations.iterator();
154
155 RemappingMethodAdapter remappingMethodAdapter = new RemappingMethodAdapter(resultNode.access, resultNode.desc, resultNode,
156 new TypeRemapper(currentTypeMapping));
157
158 final int markerShift = InlineCodegenUtil.calcMarkerShift(parameters, node);
159 InlineAdapter lambdaInliner = new InlineAdapter(remappingMethodAdapter, parameters.getArgsSizeOnStack(), sourceMapper) {
160
161 private AnonymousObjectGeneration anonymousObjectGen;
162 private void handleAnonymousObjectGeneration() {
163 anonymousObjectGen = iterator.next();
164
165 if (anonymousObjectGen.shouldRegenerate()) {
166 //TODO: need poping of type but what to do with local funs???
167 String oldClassName = anonymousObjectGen.getOwnerInternalName();
168 String newClassName = inliningContext.nameGenerator.genLambdaClassName();
169 currentTypeMapping.put(oldClassName, newClassName);
170 AnonymousObjectTransformer transformer =
171 new AnonymousObjectTransformer(oldClassName,
172 inliningContext
173 .subInlineWithClassRegeneration(
174 inliningContext.nameGenerator,
175 currentTypeMapping,
176 anonymousObjectGen),
177 isSameModule, Type.getObjectType(newClassName)
178 );
179
180 InlineResult transformResult = transformer.doTransform(anonymousObjectGen, nodeRemapper);
181 result.addAllClassesToRemove(transformResult);
182 result.addChangedType(oldClassName, newClassName);
183
184 if (inliningContext.isInliningLambda && !anonymousObjectGen.isStaticOrigin()) {
185 // this class is transformed and original not used so we should remove original one after inlining
186 // Note: It is unsafe to remove anonymous class that is referenced by GETSTATIC within lambda
187 // because it can be local function from outer scope
188 result.addClassToRemove(oldClassName);
189 }
190
191 if (transformResult.getReifiedTypeParametersUsages().wereUsedReifiedParameters()) {
192 ReifiedTypeInliner.putNeedClassReificationMarker(mv);
193 result.getReifiedTypeParametersUsages().mergeAll(transformResult.getReifiedTypeParametersUsages());
194 }
195 }
196 }
197
198 @Override
199 public void anew(@NotNull Type type) {
200 if (isAnonymousConstructorCall(type.getInternalName(), "<init>")) {
201 handleAnonymousObjectGeneration();
202 }
203
204 //in case of regenerated anonymousObjectGen type would be remapped to new one via remappingMethodAdapter
205 super.anew(type);
206 }
207
208 @Override
209 public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
210 if (/*INLINE_RUNTIME.equals(owner) &&*/ isInvokeOnLambda(owner, name)) { //TODO add method
211 assert !currentInvokes.isEmpty();
212 InvokeCall invokeCall = currentInvokes.remove();
213 LambdaInfo info = invokeCall.lambdaInfo;
214
215 if (info == null) {
216 //noninlinable lambda
217 super.visitMethodInsn(opcode, owner, name, desc, itf);
218 return;
219 }
220
221 int valueParamShift = Math.max(getNextLocalIndex(), markerShift);//NB: don't inline cause it changes
222 putStackValuesIntoLocals(info.getInvokeParamsWithoutCaptured(), valueParamShift, this, desc);
223
224 addInlineMarker(this, true);
225 Parameters lambdaParameters = info.addAllParameters(nodeRemapper);
226
227 InlinedLambdaRemapper newCapturedRemapper =
228 new InlinedLambdaRemapper(info.getLambdaClassType().getInternalName(), nodeRemapper, lambdaParameters);
229
230 setLambdaInlining(true);
231 SMAP lambdaSMAP = info.getNode().getClassSMAP();
232 SourceMapper mapper =
233 inliningContext.classRegeneration && !inliningContext.isInliningLambda ?
234 new NestedSourceMapper(sourceMapper, lambdaSMAP.getIntervals(), lambdaSMAP.getSourceInfo())
235 : new InlineLambdaSourceMapper(sourceMapper.getParent(), info.getNode());
236 MethodInliner inliner = new MethodInliner(info.getNode().getNode(), lambdaParameters,
237 inliningContext.subInlineLambda(info),
238 newCapturedRemapper, true /*cause all calls in same module as lambda*/,
239 "Lambda inlining " + info.getLambdaClassType().getInternalName(),
240 mapper);
241
242 LocalVarRemapper remapper = new LocalVarRemapper(lambdaParameters, valueParamShift);
243 InlineResult lambdaResult = inliner.doInline(this.mv, remapper, true, info, invokeCall.finallyDepthShift);//TODO add skipped this and receiver
244 result.addAllClassesToRemove(lambdaResult);
245
246 //return value boxing/unboxing
247 Method bridge =
248 typeMapper.mapSignature(ClosureCodegen.getErasedInvokeFunction(info.getFunctionDescriptor())).getAsmMethod();
249 Method delegate = typeMapper.mapSignature(info.getFunctionDescriptor()).getAsmMethod();
250 StackValue.onStack(delegate.getReturnType()).put(bridge.getReturnType(), this);
251 setLambdaInlining(false);
252 addInlineMarker(this, false);
253 mapper.endMapping();
254 }
255 else if (isAnonymousConstructorCall(owner, name)) { //TODO add method
256 assert anonymousObjectGen != null : "<init> call not corresponds to new call" + owner + " " + name;
257 if (anonymousObjectGen.shouldRegenerate()) {
258 //put additional captured parameters on stack
259 for (CapturedParamDesc capturedParamDesc : anonymousObjectGen.getAllRecapturedParameters()) {
260 visitFieldInsn(Opcodes.GETSTATIC, capturedParamDesc.getContainingLambdaName(),
261 "$$$" + capturedParamDesc.getFieldName(), capturedParamDesc.getType().getDescriptor());
262 }
263 super.visitMethodInsn(opcode, anonymousObjectGen.getNewLambdaType().getInternalName(), name, anonymousObjectGen.getNewConstructorDescriptor(), itf);
264 anonymousObjectGen = null;
265 } else {
266 super.visitMethodInsn(opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
267 }
268 }
269 else if (ReifiedTypeInliner.isNeedClassReificationMarker(new MethodInsnNode(opcode, owner, name, desc, false))) {
270 // we will put it if needed in anew processing
271 }
272 else {
273 super.visitMethodInsn(opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
274 }
275 }
276
277 @Override
278 public void visitFieldInsn(int opcode, @NotNull String owner, @NotNull String name, @NotNull String desc) {
279 if (opcode == Opcodes.GETSTATIC && isAnonymousSingletonLoad(owner, name)) {
280 handleAnonymousObjectGeneration();
281 }
282 super.visitFieldInsn(opcode, owner, name, desc);
283 }
284
285 @Override
286 public void visitMaxs(int stack, int locals) {
287 lambdasFinallyBlocks = resultNode.tryCatchBlocks.size();
288 super.visitMaxs(stack, locals);
289 }
290
291 };
292
293 node.accept(lambdaInliner);
294
295 return resultNode;
296 }
297
298 @NotNull
299 public static CapturedParamInfo findCapturedField(FieldInsnNode node, FieldRemapper fieldRemapper) {
300 assert node.name.startsWith("$$$") : "Captured field template should start with $$$ prefix";
301 FieldInsnNode fin = new FieldInsnNode(node.getOpcode(), node.owner, node.name.substring(3), node.desc);
302 CapturedParamInfo field = fieldRemapper.findField(fin);
303 if (field == null) {
304 throw new IllegalStateException("Couldn't find captured field " + node.owner + "." + node.name + " in " + fieldRemapper.getLambdaInternalName());
305 }
306 return field;
307 }
308
309 @NotNull
310 public MethodNode prepareNode(@NotNull MethodNode node, int finallyDeepShift) {
311 final int capturedParamsSize = parameters.getCapturedArgsSizeOnStack();
312 final int realParametersSize = parameters.getRealArgsSizeOnStack();
313 Type[] types = Type.getArgumentTypes(node.desc);
314 Type returnType = Type.getReturnType(node.desc);
315
316 List<Type> capturedTypes = parameters.getCapturedTypes();
317 Type[] allTypes = ArrayUtil.mergeArrays(types, capturedTypes.toArray(new Type[capturedTypes.size()]));
318
319 node.instructions.resetLabels();
320 MethodNode transformedNode = new MethodNode(InlineCodegenUtil.API, node.access, node.name, Type.getMethodDescriptor(returnType, allTypes), node.signature, null) {
321
322 private final boolean isInliningLambda = nodeRemapper.isInsideInliningLambda();
323
324 private int getNewIndex(int var) {
325 return var + (var < realParametersSize ? 0 : capturedParamsSize);
326 }
327
328 @Override
329 public void visitVarInsn(int opcode, int var) {
330 super.visitVarInsn(opcode, getNewIndex(var));
331 }
332
333 @Override
334 public void visitIincInsn(int var, int increment) {
335 super.visitIincInsn(getNewIndex(var), increment);
336 }
337
338 @Override
339 public void visitMaxs(int maxStack, int maxLocals) {
340 super.visitMaxs(maxStack, maxLocals + capturedParamsSize);
341 }
342
343 @Override
344 public void visitLineNumber(int line, @NotNull Label start) {
345 if(isInliningLambda || InlineCodegenUtil.GENERATE_SMAP) {
346 super.visitLineNumber(line, start);
347 }
348 }
349
350 @Override
351 public void visitLocalVariable(
352 @NotNull String name, @NotNull String desc, String signature, @NotNull Label start, @NotNull Label end, int index
353 ) {
354 if (isInliningLambda || InlineCodegenUtil.GENERATE_SMAP) {
355 super.visitLocalVariable(name, desc, signature, start, end, getNewIndex(index));
356 }
357 }
358 };
359
360 node.accept(transformedNode);
361
362 transformCaptured(transformedNode);
363 transformFinallyDeepIndex(transformedNode, finallyDeepShift);
364
365 return transformedNode;
366 }
367
368 @NotNull
369 protected MethodNode markPlacesForInlineAndRemoveInlinable(@NotNull MethodNode node, int finallyDeepShift) {
370 node = prepareNode(node, finallyDeepShift);
371
372 try {
373 new MandatoryMethodTransformer().transform("fake", node);
374 }
375 catch (Throwable e) {
376 throw wrapException(e, node, "couldn't inline method call");
377 }
378
379 Analyzer<SourceValue> analyzer = new Analyzer<SourceValue>(new SourceInterpreter()) {
380 @NotNull
381 @Override
382 protected Frame<SourceValue> newFrame(
383 int nLocals, int nStack
384 ) {
385 return new Frame<SourceValue>(nLocals, nStack) {
386 @Override
387 public void execute(
388 @NotNull AbstractInsnNode insn, Interpreter<SourceValue> interpreter
389 ) throws AnalyzerException {
390 if (insn.getOpcode() == Opcodes.RETURN) {
391 //there is exception on void non local return in frame
392 return;
393 }
394 super.execute(insn, interpreter);
395 }
396 };
397 }
398 };
399
400 Frame<SourceValue>[] sources;
401 try {
402 sources = analyzer.analyze("fake", node);
403 }
404 catch (AnalyzerException e) {
405 throw wrapException(e, node, "couldn't inline method call");
406 }
407
408 AbstractInsnNode cur = node.instructions.getFirst();
409 int index = 0;
410
411 boolean awaitClassReification = false;
412 int currentFinallyDeep = 0;
413
414 while (cur != null) {
415 Frame<SourceValue> frame = sources[index];
416
417 if (frame != null) {
418 if (ReifiedTypeInliner.isNeedClassReificationMarker(cur)) {
419 awaitClassReification = true;
420 }
421 else if (cur.getType() == AbstractInsnNode.METHOD_INSN) {
422 if (InlineCodegenUtil.isFinallyStart(cur)) {
423 //TODO deep index calc could be more precise
424 currentFinallyDeep = InlineCodegenUtil.getConstant(cur.getPrevious());
425 }
426
427 MethodInsnNode methodInsnNode = (MethodInsnNode) cur;
428 String owner = methodInsnNode.owner;
429 String desc = methodInsnNode.desc;
430 String name = methodInsnNode.name;
431 //TODO check closure
432 int paramLength = Type.getArgumentsAndReturnSizes(desc) >> 2;//non static
433 if (isInvokeOnLambda(owner, name) /*&& methodInsnNode.owner.equals(INLINE_RUNTIME)*/) {
434 SourceValue sourceValue = frame.getStack(frame.getStackSize() - paramLength);
435
436 LambdaInfo lambdaInfo = null;
437 int varIndex = -1;
438
439 if (sourceValue.insns.size() == 1) {
440 AbstractInsnNode insnNode = sourceValue.insns.iterator().next();
441
442 lambdaInfo = getLambdaIfExists(insnNode);
443 if (lambdaInfo != null) {
444 //remove inlinable access
445 node.instructions.remove(insnNode);
446 }
447 }
448
449 invokeCalls.add(new InvokeCall(varIndex, lambdaInfo, currentFinallyDeep));
450 }
451 else if (isAnonymousConstructorCall(owner, name)) {
452 Map<Integer, LambdaInfo> lambdaMapping = new HashMap<Integer, LambdaInfo>();
453 int paramStart = frame.getStackSize() - paramLength;
454
455 for (int i = 0; i < paramLength; i++) {
456 SourceValue sourceValue = frame.getStack(paramStart + i);
457 if (sourceValue.insns.size() == 1) {
458 AbstractInsnNode insnNode = sourceValue.insns.iterator().next();
459 LambdaInfo lambdaInfo = getLambdaIfExists(insnNode);
460 if (lambdaInfo != null) {
461 lambdaMapping.put(i, lambdaInfo);
462 node.instructions.remove(insnNode);
463 }
464 }
465 }
466
467 anonymousObjectGenerations.add(
468 buildConstructorInvocation(
469 owner, desc, lambdaMapping, awaitClassReification
470 )
471 );
472 awaitClassReification = false;
473 }
474 }
475 else if (cur.getOpcode() == Opcodes.GETSTATIC) {
476 FieldInsnNode fieldInsnNode = (FieldInsnNode) cur;
477 String owner = fieldInsnNode.owner;
478 if (isAnonymousSingletonLoad(owner, fieldInsnNode.name)) {
479 anonymousObjectGenerations.add(
480 new AnonymousObjectGeneration(
481 owner, isSameModule, awaitClassReification, isAlreadyRegenerated(owner), true
482 )
483 );
484 awaitClassReification = false;
485 }
486 }
487 }
488 AbstractInsnNode prevNode = cur;
489 cur = cur.getNext();
490 index++;
491
492 //given frame is <tt>null</tt> if and only if the corresponding instruction cannot be reached (dead code).
493 if (frame == null) {
494 //clean dead code otherwise there is problems in unreachable finally block, don't touch label it cause try/catch/finally problems
495 if (prevNode.getType() == AbstractInsnNode.LABEL) {
496 //NB: Cause we generate exception table for default handler using gaps (see ExpressionCodegen.visitTryExpression)
497 //it may occurs that interval for default handler starts before catch start label, so this label seems as dead,
498 //but as result all this labels will be merged into one (see KT-5863)
499 } else {
500 node.instructions.remove(prevNode);
501 }
502 }
503 }
504
505 //clean dead try/catch blocks
506 List<TryCatchBlockNode> blocks = node.tryCatchBlocks;
507 for (Iterator<TryCatchBlockNode> iterator = blocks.iterator(); iterator.hasNext(); ) {
508 TryCatchBlockNode block = iterator.next();
509 if (isEmptyTryInterval(block)) {
510 iterator.remove();
511 }
512 }
513
514 return node;
515 }
516
517 private static boolean isEmptyTryInterval(@NotNull TryCatchBlockNode tryCatchBlockNode) {
518 LabelNode start = tryCatchBlockNode.start;
519 AbstractInsnNode end = tryCatchBlockNode.end;
520 while (end != start && end instanceof LabelNode) {
521 end = end.getPrevious();
522 }
523 return start == end;
524 }
525
526 @NotNull
527 private AnonymousObjectGeneration buildConstructorInvocation(
528 @NotNull String owner,
529 @NotNull String desc,
530 @NotNull Map<Integer, LambdaInfo> lambdaMapping,
531 boolean needReification
532 ) {
533 return new AnonymousObjectGeneration(
534 owner, needReification, isSameModule, lambdaMapping,
535 inliningContext.classRegeneration,
536 isAlreadyRegenerated(owner),
537 desc,
538 false
539 );
540 }
541
542 private boolean isAlreadyRegenerated(@NotNull String owner) {
543 return inliningContext.typeMapping.containsKey(owner);
544 }
545
546 public LambdaInfo getLambdaIfExists(AbstractInsnNode insnNode) {
547 if (insnNode.getOpcode() == Opcodes.ALOAD) {
548 int varIndex = ((VarInsnNode) insnNode).var;
549 return getLambdaIfExists(varIndex);
550 }
551 else if (insnNode instanceof FieldInsnNode) {
552 FieldInsnNode fieldInsnNode = (FieldInsnNode) insnNode;
553 if (fieldInsnNode.name.startsWith("$$$")) {
554 return findCapturedField(fieldInsnNode, nodeRemapper).getLambda();
555 }
556 }
557
558 return null;
559 }
560
561 private LambdaInfo getLambdaIfExists(int varIndex) {
562 if (varIndex < parameters.getArgsSizeOnStack()) {
563 return parameters.getParameterByDeclarationSlot(varIndex).getLambda();
564 }
565 return null;
566 }
567
568 private static void removeClosureAssertions(MethodNode node) {
569 AbstractInsnNode cur = node.instructions.getFirst();
570 while (cur != null && cur.getNext() != null) {
571 AbstractInsnNode next = cur.getNext();
572 if (next.getType() == AbstractInsnNode.METHOD_INSN) {
573 MethodInsnNode methodInsnNode = (MethodInsnNode) next;
574 if (methodInsnNode.name.equals("checkParameterIsNotNull") && methodInsnNode.owner.equals(IntrinsicMethods.INTRINSICS_CLASS_NAME)) {
575 AbstractInsnNode prev = cur.getPrevious();
576
577 assert cur.getOpcode() == Opcodes.LDC : "checkParameterIsNotNull should go after LDC but " + cur;
578 assert prev.getOpcode() == Opcodes.ALOAD : "checkParameterIsNotNull should be invoked on local var but " + prev;
579
580 node.instructions.remove(prev);
581 node.instructions.remove(cur);
582 cur = next.getNext();
583 node.instructions.remove(next);
584 next = cur;
585 }
586 }
587 cur = next;
588 }
589 }
590
591 private void transformCaptured(@NotNull MethodNode node) {
592 if (nodeRemapper.isRoot()) {
593 return;
594 }
595
596 //Fold all captured variable chain - ALOAD 0 ALOAD this$0 GETFIELD $captured - to GETFIELD $$$$captured
597 //On future decoding this field could be inline or unfolded in another field access chain (it can differ in some missed this$0)
598 AbstractInsnNode cur = node.instructions.getFirst();
599 while (cur != null) {
600 if (cur instanceof VarInsnNode && cur.getOpcode() == Opcodes.ALOAD) {
601 int varIndex = ((VarInsnNode) cur).var;
602 if (varIndex == 0 || nodeRemapper.processNonAload0FieldAccessChains(getLambdaIfExists(varIndex) != null)) {
603 List<AbstractInsnNode> accessChain = getCapturedFieldAccessChain((VarInsnNode) cur);
604 AbstractInsnNode insnNode = nodeRemapper.foldFieldAccessChainIfNeeded(accessChain, node);
605 if (insnNode != null) {
606 cur = insnNode;
607 }
608 }
609 }
610 cur = cur.getNext();
611 }
612 }
613
614 private void transformFinallyDeepIndex(@NotNull MethodNode node, int finallyDeepShift) {
615 if (finallyDeepShift == 0) {
616 return;
617 }
618
619 AbstractInsnNode cur = node.instructions.getFirst();
620 while (cur != null) {
621 if (cur instanceof MethodInsnNode && InlineCodegenUtil.isFinallyMarker(cur)) {
622 AbstractInsnNode constant = cur.getPrevious();
623 int curDeep = InlineCodegenUtil.getConstant(constant);
624 node.instructions.insert(constant, new LdcInsnNode(curDeep + finallyDeepShift));
625 node.instructions.remove(constant);
626 }
627 cur = cur.getNext();
628 }
629 }
630
631 @NotNull
632 public static List<AbstractInsnNode> getCapturedFieldAccessChain(@NotNull VarInsnNode aload0) {
633 List<AbstractInsnNode> fieldAccessChain = new ArrayList<AbstractInsnNode>();
634 fieldAccessChain.add(aload0);
635 AbstractInsnNode next = aload0.getNext();
636 while (next != null && next instanceof FieldInsnNode || next instanceof LabelNode) {
637 if (next instanceof LabelNode) {
638 next = next.getNext();
639 continue; //it will be delete on transformation
640 }
641 fieldAccessChain.add(next);
642 if ("this$0".equals(((FieldInsnNode) next).name)) {
643 next = next.getNext();
644 }
645 else {
646 break;
647 }
648 }
649
650 return fieldAccessChain;
651 }
652
653 public static void putStackValuesIntoLocals(List<Type> directOrder, int shift, InstructionAdapter iv, String descriptor) {
654 Type[] actualParams = Type.getArgumentTypes(descriptor);
655 assert actualParams.length == directOrder.size() : "Number of expected and actual params should be equals!";
656
657 int size = 0;
658 for (Type next : directOrder) {
659 size += next.getSize();
660 }
661
662 shift += size;
663 int index = directOrder.size();
664
665 for (Type next : Lists.reverse(directOrder)) {
666 shift -= next.getSize();
667 Type typeOnStack = actualParams[--index];
668 if (!typeOnStack.equals(next)) {
669 StackValue.onStack(typeOnStack).put(next, iv);
670 }
671 iv.store(shift, next);
672 }
673 }
674
675 //TODO: check it's external module
676 //TODO?: assert method exists in facade?
677 public String changeOwnerForExternalPackage(String type, int opcode) {
678 //if (isSameModule || (opcode & Opcodes.INVOKESTATIC) == 0) {
679 // return type;
680 //}
681
682 //JvmClassName name = JvmClassName.byInternalName(type);
683 //String packageClassInternalName = PackageClassUtils.getPackageClassInternalName(name.getPackageFqName());
684 //if (type.startsWith(packageClassInternalName + '$')) {
685 // VirtualFile virtualFile = InlineCodegenUtil.findVirtualFile(inliningContext.state.getProject(), type);
686 // if (virtualFile != null) {
687 // KotlinJvmBinaryClass klass = KotlinBinaryClassCache.getKotlinBinaryClass(virtualFile);
688 // if (klass != null && klass.getClassHeader().getSyntheticClassKind() == KotlinSyntheticClass.Kind.PACKAGE_PART) {
689 // return packageClassInternalName;
690 // }
691 // }
692 //}
693
694 return type;
695 }
696
697 @NotNull
698 public RuntimeException wrapException(@NotNull Throwable originalException, @NotNull MethodNode node, @NotNull String errorSuffix) {
699 if (originalException instanceof InlineException) {
700 return new InlineException(errorPrefix + ": " + errorSuffix, originalException);
701 }
702 else {
703 return new InlineException(errorPrefix + ": " + errorSuffix + "\ncause: " +
704 getNodeText(node), originalException);
705 }
706 }
707
708 @NotNull
709 //process local and global returns (local substituted with goto end-label global kept unchanged)
710 public static List<PointForExternalFinallyBlocks> processReturns(@NotNull MethodNode node, @NotNull LabelOwner labelOwner, boolean remapReturn, Label endLabel) {
711 if (!remapReturn) {
712 return Collections.emptyList();
713 }
714 List<PointForExternalFinallyBlocks> result = new ArrayList<PointForExternalFinallyBlocks>();
715 InsnList instructions = node.instructions;
716 AbstractInsnNode insnNode = instructions.getFirst();
717 while (insnNode != null) {
718 if (InlineCodegenUtil.isReturnOpcode(insnNode.getOpcode())) {
719 AbstractInsnNode previous = insnNode.getPrevious();
720 MethodInsnNode flagNode;
721 boolean isLocalReturn = true;
722 String labelName = null;
723 if (previous != null && previous instanceof MethodInsnNode && InlineCodegenUtil.NON_LOCAL_RETURN.equals(((MethodInsnNode) previous).owner)) {
724 flagNode = (MethodInsnNode) previous;
725 labelName = flagNode.name;
726 }
727
728 if (labelName != null) {
729 isLocalReturn = labelOwner.isMyLabel(labelName);
730 //remove global return flag
731 if (isLocalReturn) {
732 instructions.remove(previous);
733 }
734 }
735
736 if (isLocalReturn && endLabel != null) {
737 LabelNode labelNode = (LabelNode) endLabel.info;
738 JumpInsnNode jumpInsnNode = new JumpInsnNode(Opcodes.GOTO, labelNode);
739 instructions.insert(insnNode, jumpInsnNode);
740 instructions.remove(insnNode);
741 insnNode = jumpInsnNode;
742 }
743
744 //genetate finally block before nonLocalReturn flag/return/goto
745 LabelNode label = new LabelNode();
746 instructions.insert(insnNode, label);
747 result.add(new PointForExternalFinallyBlocks(getInstructionToInsertFinallyBefore(insnNode, isLocalReturn),
748 getReturnType(insnNode.getOpcode()),
749 label));
750 }
751 insnNode = insnNode.getNext();
752 }
753 return result;
754 }
755
756 @NotNull
757 private static AbstractInsnNode getInstructionToInsertFinallyBefore(@NotNull AbstractInsnNode nonLocalReturnOrJump, boolean isLocal) {
758 return isLocal ? nonLocalReturnOrJump : nonLocalReturnOrJump.getPrevious();
759 }
760
761 //Place to insert finally blocks from try blocks that wraps inline fun call
762 public static class PointForExternalFinallyBlocks {
763
764 final AbstractInsnNode beforeIns;
765
766 final Type returnType;
767
768 final LabelNode finallyIntervalEnd;
769
770 public PointForExternalFinallyBlocks(
771 @NotNull AbstractInsnNode beforeIns,
772 @NotNull Type returnType,
773 @NotNull LabelNode finallyIntervalEnd
774 ) {
775 this.beforeIns = beforeIns;
776 this.returnType = returnType;
777 this.finallyIntervalEnd = finallyIntervalEnd;
778 }
779
780 }
781
782 }