@NotNull
private static FrameMap createFrameMap(
@NotNull GenerationState state,
@NotNull FunctionDescriptor function,
@NotNull JvmMethodSignature signature,
boolean isStatic) {
FrameMap frameMap = new FrameMap();
if (!isStatic) {
frameMap.enterTemp(OBJECT_TYPE);
}
for (JvmMethodParameterSignature parameter : signature.getValueParameters()) {
if (parameter.getKind() == JvmMethodParameterKind.RECEIVER) {
ReceiverParameterDescriptor receiverParameter = function.getExtensionReceiverParameter();
if (receiverParameter != null) {
frameMap.enter(receiverParameter, state.getTypeMapper().mapType(receiverParameter));
}
} else if (parameter.getKind() != JvmMethodParameterKind.VALUE) {
frameMap.enterTemp(parameter.getAsmType());
}
}
for (ValueParameterDescriptor parameter : function.getValueParameters()) {
frameMap.enter(parameter, state.getTypeMapper().mapType(parameter));
}
return frameMap;
}
public static void generateDefaultImplBody(
@NotNull MethodContext methodContext,
@NotNull FunctionDescriptor functionDescriptor,
@NotNull MethodVisitor mv,
@NotNull DefaultParameterValueLoader loadStrategy,
@Nullable JetNamedFunction function,
@NotNull MemberCodegen<?> parentCodegen) {
GenerationState state = parentCodegen.state;
JvmMethodSignature signature =
state.getTypeMapper().mapSignature(functionDescriptor, methodContext.getContextKind());
boolean isStatic = isStaticMethod(methodContext.getContextKind(), functionDescriptor);
FrameMap frameMap = createFrameMap(state, functionDescriptor, signature, isStatic);
ExpressionCodegen codegen =
new ExpressionCodegen(
mv, frameMap, signature.getReturnType(), methodContext, state, parentCodegen);
CallGenerator generator = codegen.getOrCreateCallGenerator(functionDescriptor, function);
loadExplicitArgumentsOnStack(OBJECT_TYPE, isStatic, signature, generator);
List<JvmMethodParameterSignature> mappedParameters = signature.getValueParameters();
int capturedArgumentsCount = 0;
while (capturedArgumentsCount < mappedParameters.size()
&& mappedParameters.get(capturedArgumentsCount).getKind() != JvmMethodParameterKind.VALUE) {
capturedArgumentsCount++;
}
InstructionAdapter iv = new InstructionAdapter(mv);
int maskIndex = 0;
List<ValueParameterDescriptor> valueParameters = functionDescriptor.getValueParameters();
for (int index = 0; index < valueParameters.size(); index++) {
if (index % Integer.SIZE == 0) {
maskIndex = frameMap.enterTemp(Type.INT_TYPE);
}
ValueParameterDescriptor parameterDescriptor = valueParameters.get(index);
Type type = mappedParameters.get(capturedArgumentsCount + index).getAsmType();
int parameterIndex = frameMap.getIndex(parameterDescriptor);
if (parameterDescriptor.declaresDefaultValue()) {
iv.load(maskIndex, Type.INT_TYPE);
iv.iconst(1 << (index % Integer.SIZE));
iv.and(Type.INT_TYPE);
Label loadArg = new Label();
iv.ifeq(loadArg);
StackValue.local(parameterIndex, type)
.store(loadStrategy.genValue(parameterDescriptor, codegen), iv);
iv.mark(loadArg);
}
generator.putValueIfNeeded(parameterDescriptor, type, StackValue.local(parameterIndex, type));
}
CallableMethod method = state.getTypeMapper().mapToCallableMethod(functionDescriptor, false);
generator.genCallWithoutAssertions(method, codegen);
iv.areturn(signature.getReturnType());
}