public InlineResult doInline(
@NotNull MethodVisitor adapter,
@NotNull LocalVarRemapper remapper,
boolean remapReturn,
@NotNull LabelOwner labelOwner) {
// analyze body
MethodNode transformedNode = markPlacesForInlineAndRemoveInlinable(node);
// 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);
}
processReturns(resultNode, labelOwner, remapReturn, end);
// flush transformed node to output
resultNode.accept(new InliningInstructionAdapter(adapter));
return result;
}
@NotNull
public MethodNode prepareNode(@NotNull MethodNode node) {
final int capturedParamsSize = parameters.getCaptured().size();
final int realParametersSize = parameters.getReal().size();
Type[] types = Type.getArgumentTypes(node.desc);
Type returnType = Type.getReturnType(node.desc);
ArrayList<Type> 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) {
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) {
super.visitLocalVariable(name, desc, signature, start, end, getNewIndex(index));
}
}
};
node.accept(transformedNode);
transformCaptured(transformedNode);
return transformedNode;
}
private MethodNode doInline(MethodNode node) {
final Deque<InvokeCall> currentInvokes = new LinkedList<InvokeCall>(invokeCalls);
final MethodNode resultNode =
new MethodNode(node.access, node.name, node.desc, node.signature, null);
final Iterator<AnonymousObjectGeneration> iterator = anonymousObjectGenerations.iterator();
RemappingMethodAdapter remappingMethodAdapter =
new RemappingMethodAdapter(
resultNode.access, resultNode.desc, resultNode, new TypeRemapper(currentTypeMapping));
InlineAdapter lambdaInliner =
new InlineAdapter(remappingMethodAdapter, parameters.totalSize()) {
private AnonymousObjectGeneration anonymousObjectGen;
private void handleAnonymousObjectGeneration() {
anonymousObjectGen = iterator.next();
if (anonymousObjectGen.shouldRegenerate()) {
// TODO: need poping of type but what to do with local funs???
Type newLambdaType =
Type.getObjectType(inliningContext.nameGenerator.genLambdaClassName());
currentTypeMapping.put(
anonymousObjectGen.getOwnerInternalName(), newLambdaType.getInternalName());
AnonymousObjectTransformer transformer =
new AnonymousObjectTransformer(
anonymousObjectGen.getOwnerInternalName(),
inliningContext.subInlineWithClassRegeneration(
inliningContext.nameGenerator, currentTypeMapping, anonymousObjectGen),
isSameModule,
newLambdaType);
InlineResult transformResult =
transformer.doTransform(anonymousObjectGen, nodeRemapper);
result.addAllClassesToRemove(transformResult);
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(anonymousObjectGen.getOwnerInternalName());
}
if (transformResult.getReifiedTypeParametersUsages().wereUsedReifiedParameters()) {
ReifiedTypeInliner.putNeedClassReificationMarker(mv);
result
.getReifiedTypeParametersUsages()
.mergeAll(transformResult.getReifiedTypeParametersUsages());
}
}
}
@Override
public void anew(@NotNull Type type) {
if (isAnonymousConstructorCall(type.getInternalName(), "<init>")) {
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 = getNextLocalIndex(); // 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);
MethodInliner inliner =
new MethodInliner(
info.getNode(),
lambdaParameters,
inliningContext.subInlineLambda(info),
newCapturedRemapper,
true /*cause all calls in same module as lambda*/,
"Lambda inlining " + info.getLambdaClassType().getInternalName());
LocalVarRemapper remapper = new LocalVarRemapper(lambdaParameters, valueParamShift);
InlineResult lambdaResult =
inliner.doInline(
this.mv, remapper, true, info); // 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);
} else if (isAnonymousConstructorCall(owner, name)) { // TODO add method
assert anonymousObjectGen != null
: "<init> 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());
}
super.visitMethodInsn(
opcode,
anonymousObjectGen.getNewLambdaType().getInternalName(),
name,
anonymousObjectGen.getNewConstructorDescriptor(),
itf);
anonymousObjectGen = null;
} else {
super.visitMethodInsn(
opcode, changeOwnerForExternalPackage(owner, opcode), name, desc, itf);
}
} else if (ReifiedTypeInliner.isNeedClassReificationMarker(
new MethodInsnNode(opcode, owner, name, desc, false))) {
// 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;
}