public InlineCodegen(
@NotNull ExpressionCodegen codegen,
@NotNull GenerationState state,
@NotNull SimpleFunctionDescriptor functionDescriptor,
@NotNull JetElement callElement,
@Nullable ReifiedTypeParameterMappings typeParameterMappings) {
assert InlineUtil.isInline(functionDescriptor)
: "InlineCodegen could inline only inline function: " + functionDescriptor;
this.state = state;
this.typeMapper = state.getTypeMapper();
this.codegen = codegen;
this.callElement = callElement;
this.functionDescriptor = functionDescriptor.getOriginal();
reifiedTypeInliner = new ReifiedTypeInliner(typeParameterMappings);
initialFrameSize = codegen.getFrameMap().getCurrentSize();
context = (MethodContext) getContext(functionDescriptor, state);
jvmSignature = typeMapper.mapSignature(functionDescriptor, context.getContextKind());
// TODO: implement AS_FUNCTION inline strategy
InlineStrategy inlineStrategy = InlineUtil.getInlineStrategy(functionDescriptor);
this.asFunctionInline = false;
isSameModule =
JvmCodegenUtil.isCallInsideSameModuleAsDeclared(
functionDescriptor, codegen.getContext(), state.getOutDirectory());
sourceMapper = codegen.getParentCodegen().getOrCreateSourceMapper();
reportIncrementalInfo(
functionDescriptor, codegen.getContext().getFunctionDescriptor().getOriginal());
}
private SMAPAndMethodNode generateLambdaBody(LambdaInfo info) {
JetExpression declaration = info.getFunctionWithBodyOrCallableReference();
FunctionDescriptor descriptor = info.getFunctionDescriptor();
MethodContext parentContext = codegen.getContext();
MethodContext context =
parentContext.intoClosure(descriptor, codegen, typeMapper).intoInlinedLambda(descriptor);
JvmMethodSignature jvmMethodSignature = typeMapper.mapSignature(descriptor);
Method asmMethod = jvmMethodSignature.getAsmMethod();
MethodNode methodNode =
new MethodNode(
InlineCodegenUtil.API,
getMethodAsmFlags(descriptor, context.getContextKind()),
asmMethod.getName(),
asmMethod.getDescriptor(),
jvmMethodSignature.getGenericsSignature(),
null);
MethodVisitor adapter = InlineCodegenUtil.wrapWithMaxLocalCalc(methodNode);
SMAP smap =
generateMethodBody(adapter, descriptor, context, declaration, jvmMethodSignature, true);
adapter.visitMaxs(-1, -1);
return new SMAPAndMethodNode(methodNode, smap);
}
public void generateBridges(@NotNull FunctionDescriptor descriptor) {
if (descriptor instanceof ConstructorDescriptor) return;
if (owner.getContextKind() == OwnerKind.DEFAULT_IMPLS) return;
if (isInterface(descriptor.getContainingDeclaration())) return;
// equals(Any?), hashCode(), toString() never need bridges
if (isMethodOfAny(descriptor)) return;
// If the function doesn't have a physical declaration among super-functions, it's a SAM adapter
// or alike and doesn't need bridges
if (CallResolverUtilKt.isOrOverridesSynthesized(descriptor)) return;
boolean isSpecial =
SpecialBuiltinMembers.getOverriddenBuiltinReflectingJvmDescriptor(descriptor) != null;
Set<Bridge<Method>> bridgesToGenerate;
if (!isSpecial) {
bridgesToGenerate =
ImplKt.generateBridgesForFunctionDescriptor(descriptor, getSignatureMapper(typeMapper));
if (!bridgesToGenerate.isEmpty()) {
PsiElement origin =
descriptor.getKind() == DECLARATION ? getSourceFromDescriptor(descriptor) : null;
boolean isSpecialBridge =
BuiltinMethodsWithSpecialGenericSignature
.getOverriddenBuiltinFunctionWithErasedValueParametersInJava(descriptor)
!= null;
for (Bridge<Method> bridge : bridgesToGenerate) {
generateBridge(
origin, descriptor, bridge.getFrom(), bridge.getTo(), isSpecialBridge, false);
}
}
} else {
Set<BridgeForBuiltinSpecial<Method>> specials =
BuiltinSpecialBridgesUtil.generateBridgesForBuiltinSpecial(
descriptor, getSignatureMapper(typeMapper));
if (!specials.isEmpty()) {
PsiElement origin =
descriptor.getKind() == DECLARATION ? getSourceFromDescriptor(descriptor) : null;
for (BridgeForBuiltinSpecial<Method> bridge : specials) {
generateBridge(
origin,
descriptor,
bridge.getFrom(),
bridge.getTo(),
bridge.isSpecial(),
bridge.isDelegateToSuper());
}
}
if (!descriptor.getKind().isReal()
&& isAbstractMethod(descriptor, OwnerKind.IMPLEMENTATION)) {
CallableDescriptor overridden =
SpecialBuiltinMembers.getOverriddenBuiltinReflectingJvmDescriptor(descriptor);
assert overridden != null;
Method method = typeMapper.mapSignature(descriptor).getAsmMethod();
int flags = ACC_ABSTRACT | getVisibilityAccessFlag(descriptor);
v.newMethod(
JvmDeclarationOriginKt.OtherOrigin(overridden),
flags,
method.getName(),
method.getDescriptor(),
null,
null);
}
}
}
@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 void generateMethod(
@NotNull JvmDeclarationOrigin origin,
@NotNull FunctionDescriptor functionDescriptor,
@NotNull MethodContext methodContext,
@NotNull FunctionGenerationStrategy strategy) {
OwnerKind contextKind = methodContext.getContextKind();
if (isInterface(functionDescriptor.getContainingDeclaration())
&& functionDescriptor.getVisibility() == Visibilities.PRIVATE
&& contextKind != OwnerKind.DEFAULT_IMPLS) {
return;
}
JvmMethodSignature jvmSignature = typeMapper.mapSignature(functionDescriptor, contextKind);
Method asmMethod = jvmSignature.getAsmMethod();
int flags = getMethodAsmFlags(functionDescriptor, contextKind);
boolean isNative = NativeKt.hasNativeAnnotation(functionDescriptor);
if (isNative && owner instanceof MultifileClassFacadeContext) {
// Native methods are only defined in facades and do not need package part implementations
return;
}
MethodVisitor mv =
v.newMethod(
origin,
flags,
asmMethod.getName(),
asmMethod.getDescriptor(),
jvmSignature.getGenericsSignature(),
getThrownExceptions(functionDescriptor, typeMapper));
if (CodegenContextUtil.isImplClassOwner(owner)) {
v.getSerializationBindings().put(METHOD_FOR_FUNCTION, functionDescriptor, asmMethod);
}
generateMethodAnnotations(functionDescriptor, asmMethod, mv);
generateParameterAnnotations(
functionDescriptor, mv, typeMapper.mapSignature(functionDescriptor));
generateBridges(functionDescriptor);
boolean staticInCompanionObject =
AnnotationUtilKt.isPlatformStaticInCompanionObject(functionDescriptor);
if (staticInCompanionObject) {
ImplementationBodyCodegen parentBodyCodegen =
(ImplementationBodyCodegen) memberCodegen.getParentCodegen();
parentBodyCodegen.addAdditionalTask(
new JvmStaticGenerator(functionDescriptor, origin, state));
}
if (state.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES
|| isAbstractMethod(functionDescriptor, contextKind)) {
generateLocalVariableTable(
mv,
jvmSignature,
functionDescriptor,
getThisTypeForFunction(functionDescriptor, methodContext, typeMapper),
new Label(),
new Label(),
contextKind);
mv.visitEnd();
return;
}
if (!isNative) {
generateMethodBody(
mv, functionDescriptor, methodContext, jvmSignature, strategy, memberCodegen);
} else if (staticInCompanionObject) {
// native @JvmStatic foo() in companion object should delegate to the static native function
// moved to the outer class
mv.visitCode();
FunctionDescriptor staticFunctionDescriptor =
JvmStaticGenerator.createStaticFunctionDescriptor(functionDescriptor);
JvmMethodSignature jvmMethodSignature =
typeMapper.mapSignature(
memberCodegen.getContext().accessibleDescriptor(staticFunctionDescriptor, null));
Type owningType =
typeMapper.mapClass(
(ClassifierDescriptor) staticFunctionDescriptor.getContainingDeclaration());
generateDelegateToMethodBody(
false, mv, jvmMethodSignature.getAsmMethod(), owningType.getInternalName());
}
endVisit(mv, null, origin.getElement());
}