public static void generateMethodBody(
@NotNull MethodVisitor mv,
@NotNull FunctionDescriptor functionDescriptor,
@NotNull MethodContext context,
@NotNull JvmMethodSignature signature,
@NotNull FunctionGenerationStrategy strategy,
@NotNull MemberCodegen<?> parentCodegen) {
mv.visitCode();
Label methodBegin = new Label();
mv.visitLabel(methodBegin);
JetTypeMapper typeMapper = parentCodegen.typeMapper;
Label methodEnd;
if (context.getParentContext() instanceof DelegatingFacadeContext) {
generateFacadeDelegateMethodBody(
mv, signature.getAsmMethod(), (DelegatingFacadeContext) context.getParentContext());
methodEnd = new Label();
} else {
FrameMap frameMap =
createFrameMap(
parentCodegen.state,
functionDescriptor,
signature,
isStaticMethod(context.getContextKind(), functionDescriptor));
Label methodEntry = new Label();
mv.visitLabel(methodEntry);
context.setMethodStartLabel(methodEntry);
if (!JetTypeMapper.isAccessor(functionDescriptor)) {
genNotNullAssertionsForParameters(
new InstructionAdapter(mv), parentCodegen.state, functionDescriptor, frameMap);
}
methodEnd = new Label();
context.setMethodEndLabel(methodEnd);
strategy.generateBody(mv, frameMap, signature, context, parentCodegen);
}
mv.visitLabel(methodEnd);
Type thisType = getThisTypeForFunction(functionDescriptor, context, typeMapper);
generateLocalVariableTable(
mv,
signature,
functionDescriptor,
thisType,
methodBegin,
methodEnd,
context.getContextKind());
}
private SMAP generateMethodBody(
@NotNull MethodVisitor adapter,
@NotNull FunctionDescriptor descriptor,
@NotNull MethodContext context,
@NotNull JetExpression expression,
@NotNull JvmMethodSignature jvmMethodSignature,
boolean isLambda) {
FakeMemberCodegen parentCodegen =
new FakeMemberCodegen(
codegen.getParentCodegen(),
expression,
(FieldOwnerContext) context.getParentContext(),
isLambda
? codegen.getParentCodegen().getClassName()
: typeMapper.mapOwner(descriptor).getInternalName());
FunctionGenerationStrategy strategy =
expression instanceof JetCallableReferenceExpression
? new FunctionReferenceGenerationStrategy(
state,
descriptor,
CallUtilKt.getResolvedCallWithAssert(
((JetCallableReferenceExpression) expression).getCallableReference(),
codegen.getBindingContext()))
: new FunctionGenerationStrategy.FunctionDefault(
state, descriptor, (JetDeclarationWithBody) expression);
FunctionCodegen.generateMethodBody(
adapter,
descriptor,
context,
jvmMethodSignature,
strategy,
// Wrapping for preventing marking actual parent codegen as containing reifier markers
parentCodegen);
return createSMAPWithDefaultMapping(
expression, parentCodegen.getOrCreateSourceMapper().getResultMappings());
}
@NotNull
private SMAPAndMethodNode createMethodNode(boolean callDefault)
throws ClassNotFoundException, IOException {
JvmMethodSignature jvmSignature =
typeMapper.mapSignature(functionDescriptor, context.getContextKind());
Method asmMethod;
if (callDefault) {
asmMethod = typeMapper.mapDefaultMethod(functionDescriptor, context.getContextKind());
} else {
asmMethod = jvmSignature.getAsmMethod();
}
SMAPAndMethodNode nodeAndSMAP;
if (functionDescriptor instanceof DeserializedSimpleFunctionDescriptor) {
JetTypeMapper.ContainingClassesInfo containingClasses =
typeMapper.getContainingClassesForDeserializedCallable(
(DeserializedSimpleFunctionDescriptor) functionDescriptor);
VirtualFile file =
InlineCodegenUtil.getVirtualFileForCallable(containingClasses.getImplClassId(), state);
nodeAndSMAP =
InlineCodegenUtil.getMethodNode(
file.contentsToByteArray(),
asmMethod.getName(),
asmMethod.getDescriptor(),
containingClasses.getFacadeClassId());
if (nodeAndSMAP == null) {
throw new RuntimeException(
"Couldn't obtain compiled function body for " + descriptorName(functionDescriptor));
}
} else {
PsiElement element = DescriptorToSourceUtils.descriptorToDeclaration(functionDescriptor);
if (element == null || !(element instanceof JetNamedFunction)) {
throw new RuntimeException(
"Couldn't find declaration for function " + descriptorName(functionDescriptor));
}
JetNamedFunction inliningFunction = (JetNamedFunction) element;
MethodNode node =
new MethodNode(
InlineCodegenUtil.API,
getMethodAsmFlags(functionDescriptor, context.getContextKind())
| (callDefault ? Opcodes.ACC_STATIC : 0),
asmMethod.getName(),
asmMethod.getDescriptor(),
jvmSignature.getGenericsSignature(),
null);
// for maxLocals calculation
MethodVisitor maxCalcAdapter = InlineCodegenUtil.wrapWithMaxLocalCalc(node);
MethodContext methodContext = context.getParentContext().intoFunction(functionDescriptor);
SMAP smap;
if (callDefault) {
Type implementationOwner = typeMapper.mapOwner(functionDescriptor);
FakeMemberCodegen parentCodegen =
new FakeMemberCodegen(
codegen.getParentCodegen(),
inliningFunction,
(FieldOwnerContext) methodContext.getParentContext(),
implementationOwner.getInternalName());
FunctionCodegen.generateDefaultImplBody(
methodContext,
functionDescriptor,
maxCalcAdapter,
DefaultParameterValueLoader.DEFAULT,
inliningFunction,
parentCodegen);
smap =
createSMAPWithDefaultMapping(
inliningFunction, parentCodegen.getOrCreateSourceMapper().getResultMappings());
} else {
smap =
generateMethodBody(
maxCalcAdapter,
functionDescriptor,
methodContext,
inliningFunction,
jvmSignature,
false);
}
nodeAndSMAP = new SMAPAndMethodNode(node, smap);
maxCalcAdapter.visitMaxs(-1, -1);
maxCalcAdapter.visitEnd();
}
return nodeAndSMAP;
}
public static void generateMethodBody(
@NotNull MethodVisitor mv,
@NotNull FunctionDescriptor functionDescriptor,
@NotNull MethodContext context,
@NotNull JvmMethodSignature signature,
@NotNull FunctionGenerationStrategy strategy,
@NotNull MemberCodegen<?> parentCodegen) {
mv.visitCode();
Label methodBegin = new Label();
mv.visitLabel(methodBegin);
JetTypeMapper typeMapper = parentCodegen.typeMapper;
if (BuiltinSpecialBridgesUtil.shouldHaveTypeSafeBarrier(
functionDescriptor, getSignatureMapper(typeMapper))) {
generateTypeCheckBarrierIfNeeded(
new InstructionAdapter(mv),
functionDescriptor,
signature.getReturnType(),
/* delegateParameterType = */ null);
}
Label methodEnd;
int functionFakeIndex = -1;
int lambdaFakeIndex = -1;
if (context.getParentContext() instanceof MultifileClassFacadeContext) {
generateFacadeDelegateMethodBody(
mv, signature.getAsmMethod(), (MultifileClassFacadeContext) context.getParentContext());
methodEnd = new Label();
} else {
FrameMap frameMap =
createFrameMap(
parentCodegen.state,
functionDescriptor,
signature,
isStaticMethod(context.getContextKind(), functionDescriptor));
if (context.isInlineMethodContext()) {
functionFakeIndex = frameMap.enterTemp(Type.INT_TYPE);
}
if (context instanceof InlineLambdaContext) {
lambdaFakeIndex = frameMap.enterTemp(Type.INT_TYPE);
}
Label methodEntry = new Label();
mv.visitLabel(methodEntry);
context.setMethodStartLabel(methodEntry);
if (!JetTypeMapper.isAccessor(functionDescriptor)) {
genNotNullAssertionsForParameters(
new InstructionAdapter(mv), parentCodegen.state, functionDescriptor, frameMap);
}
methodEnd = new Label();
context.setMethodEndLabel(methodEnd);
strategy.generateBody(mv, frameMap, signature, context, parentCodegen);
}
mv.visitLabel(methodEnd);
Type thisType = getThisTypeForFunction(functionDescriptor, context, typeMapper);
generateLocalVariableTable(
mv,
signature,
functionDescriptor,
thisType,
methodBegin,
methodEnd,
context.getContextKind());
if (context.isInlineMethodContext() && functionFakeIndex != -1) {
mv.visitLocalVariable(
JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_FUNCTION
+ functionDescriptor.getName().asString(),
Type.INT_TYPE.getDescriptor(),
null,
methodBegin,
methodEnd,
functionFakeIndex);
}
if (context instanceof InlineLambdaContext && thisType != null && lambdaFakeIndex != -1) {
String name = thisType.getClassName();
int indexOfLambdaOrdinal = name.lastIndexOf("$");
if (indexOfLambdaOrdinal > 0) {
int lambdaOrdinal = Integer.parseInt(name.substring(indexOfLambdaOrdinal + 1));
mv.visitLocalVariable(
JvmAbi.LOCAL_VARIABLE_NAME_PREFIX_INLINE_ARGUMENT + lambdaOrdinal,
Type.INT_TYPE.getDescriptor(),
null,
methodBegin,
methodEnd,
lambdaFakeIndex);
}
}
}