private void writeNonAbstractMethodWrapper(
ClassVisitor visitor, Type generatedType, Class<?> managedTypeClass, Method method) {
Label start = new Label();
Label end = new Label();
Label handler = new Label();
MethodVisitor methodVisitor = declareMethod(visitor, method);
methodVisitor.visitTryCatchBlock(start, end, handler, null);
setCanCallSettersField(methodVisitor, generatedType, false);
methodVisitor.visitLabel(start);
invokeSuperMethod(methodVisitor, managedTypeClass, method);
methodVisitor.visitLabel(end);
setCanCallSettersField(methodVisitor, generatedType, true);
methodVisitor.visitInsn(ARETURN);
methodVisitor.visitLabel(handler);
setCanCallSettersField(methodVisitor, generatedType, true);
methodVisitor.visitInsn(ATHROW);
methodVisitor.visitMaxs(0, 0);
methodVisitor.visitEnd();
}
private void writeSetter(ClassVisitor visitor, Type generatedType, ModelProperty<?> property) {
WeaklyTypeReferencingMethod<?, Void> weakSetter = property.getSetter();
// There is no setter for this property
if (weakSetter == null) {
return;
}
String propertyName = property.getName();
Class<?> propertyClass = property.getType().getConcreteClass();
Type propertyType = Type.getType(propertyClass);
Label calledOutsideOfConstructor = new Label();
Method setter = weakSetter.getMethod();
// the regular typed setter
String methodDescriptor = Type.getMethodDescriptor(Type.VOID_TYPE, propertyType);
MethodVisitor methodVisitor =
declareMethod(
visitor, setter.getName(), methodDescriptor, AsmClassGeneratorUtils.signature(setter));
putCanCallSettersFieldValueOnStack(methodVisitor, generatedType);
jumpToLabelIfStackEvaluatesToTrue(methodVisitor, calledOutsideOfConstructor);
throwExceptionBecauseCalledOnItself(methodVisitor);
methodVisitor.visitLabel(calledOutsideOfConstructor);
putStateFieldValueOnStack(methodVisitor, generatedType);
putConstantOnStack(methodVisitor, propertyName);
putFirstMethodArgumentOnStack(methodVisitor, propertyType);
if (propertyClass.isPrimitive()) {
boxType(methodVisitor, propertyClass);
}
invokeStateSetMethod(methodVisitor);
finishVisitingMethod(methodVisitor);
}
private void unboxType(MethodVisitor methodVisitor, Class<?> primitiveClass) {
// Float f = (Float) tmp
// f==null?0:f.floatValue()
Class<?> boxedType = BOXED_TYPES.get(primitiveClass);
Type primitiveType = Type.getType(primitiveClass);
methodVisitor.visitTypeInsn(CHECKCAST, Type.getInternalName(boxedType));
methodVisitor.visitInsn(DUP);
Label exit = new Label();
Label elseValue = new Label();
methodVisitor.visitJumpInsn(IFNONNULL, elseValue);
methodVisitor.visitInsn(POP);
pushDefaultValue(methodVisitor, primitiveClass);
methodVisitor.visitJumpInsn(GOTO, exit);
methodVisitor.visitLabel(elseValue);
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL,
Type.getInternalName(boxedType),
primitiveClass.getSimpleName() + "Value",
Type.getMethodDescriptor(primitiveType),
false);
methodVisitor.visitLabel(exit);
}
private void writeEqualsMethod(ClassVisitor cw, Type generatedType) {
MethodVisitor methodVisitor =
cw.visitMethod(Opcodes.ACC_PUBLIC, "equals", EQUALS_METHOD_DESCRIPTOR, null, null);
methodVisitor.visitCode();
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitVarInsn(ALOAD, 1);
Label notSameLabel = new Label();
methodVisitor.visitJumpInsn(IF_ACMPNE, notSameLabel);
methodVisitor.visitInsn(ICONST_1);
methodVisitor.visitInsn(IRETURN);
methodVisitor.visitLabel(notSameLabel);
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitTypeInsn(INSTANCEOF, MANAGED_INSTANCE_TYPE);
Label notManagedInstanceLabel = new Label();
methodVisitor.visitJumpInsn(IFNE, notManagedInstanceLabel);
methodVisitor.visitInsn(ICONST_0);
methodVisitor.visitInsn(IRETURN);
methodVisitor.visitLabel(notManagedInstanceLabel);
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL,
generatedType.getInternalName(),
"getBackingNode",
GET_BACKING_NODE_METHOD_DESCRIPTOR,
false);
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitTypeInsn(CHECKCAST, MANAGED_INSTANCE_TYPE);
methodVisitor.visitMethodInsn(
INVOKEINTERFACE,
MANAGED_INSTANCE_TYPE,
"getBackingNode",
GET_BACKING_NODE_METHOD_DESCRIPTOR,
true);
methodVisitor.visitMethodInsn(
INVOKEINTERFACE, MUTABLE_MODEL_NODE_TYPE, "equals", EQUALS_METHOD_DESCRIPTOR, true);
finishVisitingMethod(methodVisitor, Opcodes.IRETURN);
}