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);
}
// the overload of type Object for Groovy coercions: public void setFoo(Object foo)
private void createTypeConvertingSetter(
ClassVisitor visitor, Type generatedType, ModelProperty<?> property) {
if (!property.isWritable() || !(property.getSchema() instanceof ScalarValueSchema)) {
return;
}
Class<?> propertyClass = property.getType().getConcreteClass();
Type propertyType = Type.getType(propertyClass);
Class<?> boxedClass =
propertyClass.isPrimitive() ? BOXED_TYPES.get(propertyClass) : propertyClass;
Type boxedType = Type.getType(boxedClass);
Method setter = property.getSetter().getMethod();
MethodVisitor methodVisitor =
declareMethod(
visitor,
setter.getName(),
SET_OBJECT_PROPERTY_DESCRIPTOR,
SET_OBJECT_PROPERTY_DESCRIPTOR);
putThisOnStack(methodVisitor);
putTypeConverterFieldValueOnStack(methodVisitor, generatedType);
// Object converted = $typeConverter.convert(foo, Float.class, false);
methodVisitor.visitVarInsn(ALOAD, 1); // put var #1 ('foo') on the stack
methodVisitor.visitLdcInsn(boxedType); // push the constant Class onto the stack
methodVisitor.visitInsn(
propertyClass.isPrimitive()
? ICONST_1
: ICONST_0); // push int 1 or 0 (interpreted as true or false) onto the stack
methodVisitor.visitMethodInsn(
INVOKEINTERFACE,
TYPE_CONVERTER_TYPE.getInternalName(),
"convert",
COERCE_TO_SCALAR_DESCRIPTOR,
true);
methodVisitor.visitTypeInsn(CHECKCAST, boxedType.getInternalName());
if (propertyClass.isPrimitive()) {
unboxType(methodVisitor, propertyClass);
}
// invoke the typed setter, popping 'this' and 'converted' from the stack
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL,
generatedType.getInternalName(),
setter.getName(),
Type.getMethodDescriptor(Type.VOID_TYPE, propertyType),
false);
finishVisitingMethod(methodVisitor);
}
private void writePropertyMethods(
ClassVisitor visitor,
Type generatedType,
StructSchema<?> viewSchema,
StructSchema<?> delegateSchema) {
Collection<String> delegatePropertyNames;
if (delegateSchema != null) {
delegatePropertyNames = delegateSchema.getPropertyNames();
} else {
delegatePropertyNames = Collections.emptySet();
}
Class<?> viewClass = viewSchema.getType().getConcreteClass();
for (ModelProperty<?> property : viewSchema.getProperties()) {
String propertyName = property.getName();
writeConfigureMethod(visitor, generatedType, property);
writeSetMethod(visitor, generatedType, property);
createTypeConvertingSetter(visitor, generatedType, property);
// Delegated properties are handled in writeDelegateMethods()
if (delegatePropertyNames.contains(propertyName)) {
continue;
}
switch (property.getStateManagementType()) {
case MANAGED:
writeGetters(visitor, generatedType, property);
writeSetter(visitor, generatedType, property);
break;
case UNMANAGED:
for (WeaklyTypeReferencingMethod<?, ?> getter : property.getGetters()) {
Method getterMethod = getter.getMethod();
if (!Modifier.isFinal(getterMethod.getModifiers())
&& !propertyName.equals("metaClass")) {
writeNonAbstractMethodWrapper(visitor, generatedType, viewClass, getterMethod);
}
}
break;
}
}
}
private void writeSetMethod(ClassVisitor visitor, Type generatedType, ModelProperty<?> property) {
if (property.isWritable() && property.getSchema() instanceof ScalarValueSchema) {
// TODO - should we support this?
// Adds a void $propName(Object value) method that sets the value
MethodVisitor methodVisitor =
declareMethod(
visitor,
property.getName(),
Type.getMethodDescriptor(Type.VOID_TYPE, OBJECT_TYPE),
null);
putThisOnStack(methodVisitor);
putFirstMethodArgumentOnStack(methodVisitor);
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL,
generatedType.getInternalName(),
property.getSetter().getName(),
Type.getMethodDescriptor(Type.VOID_TYPE, OBJECT_TYPE),
false);
finishVisitingMethod(methodVisitor);
}
}
private void writeGetters(ClassVisitor visitor, Type generatedType, ModelProperty<?> property) {
Class<?> propertyClass = property.getType().getConcreteClass();
Type propertyType = Type.getType(propertyClass);
Set<String> processedNames = Sets.newHashSet();
for (WeaklyTypeReferencingMethod<?, ?> weakGetter : property.getGetters()) {
Method getter = weakGetter.getMethod();
if (!processedNames.add(getter.getName())) {
continue;
}
MethodVisitor methodVisitor =
declareMethod(
visitor,
getter.getName(),
Type.getMethodDescriptor(propertyType),
AsmClassGeneratorUtils.signature(getter));
putStateFieldValueOnStack(methodVisitor, generatedType);
putConstantOnStack(methodVisitor, property.getName());
invokeStateGetMethod(methodVisitor);
castFirstStackElement(methodVisitor, propertyClass);
finishVisitingMethod(methodVisitor, returnCode(propertyType));
}
}
private void writeConfigureMethod(
ClassVisitor visitor, Type generatedType, ModelProperty<?> property) {
if (!property.isWritable() && property.getSchema() instanceof CompositeSchema) {
// Adds a void $propName(Closure<?> cl) method that delegates to model state
MethodVisitor methodVisitor =
declareMethod(
visitor,
property.getName(),
Type.getMethodDescriptor(Type.VOID_TYPE, CLOSURE_TYPE),
null);
putStateFieldValueOnStack(methodVisitor, generatedType);
putConstantOnStack(methodVisitor, property.getName());
putFirstMethodArgumentOnStack(methodVisitor);
methodVisitor.visitMethodInsn(
INVOKEINTERFACE,
MODEL_ELEMENT_STATE_TYPE_INTERNAL_NAME,
"apply",
STATE_APPLY_METHOD_DESCRIPTOR,
true);
finishVisitingMethod(methodVisitor);
return;
}
if (!property.isWritable() && property.getSchema() instanceof UnmanagedImplStructSchema) {
UnmanagedImplStructSchema<?> structSchema =
(UnmanagedImplStructSchema<?>) property.getSchema();
if (!structSchema.isAnnotated()) {
return;
}
// Adds a void $propName(Closure<?> cl) method that executes the closure
MethodVisitor methodVisitor =
declareMethod(
visitor,
property.getName(),
Type.getMethodDescriptor(Type.VOID_TYPE, CLOSURE_TYPE),
null);
putThisOnStack(methodVisitor);
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL,
generatedType.getInternalName(),
property.getGetters().get(0).getName(),
Type.getMethodDescriptor(Type.getType(property.getType().getConcreteClass())),
false);
putFirstMethodArgumentOnStack(methodVisitor);
methodVisitor.visitMethodInsn(
INVOKESTATIC,
Type.getInternalName(ClosureBackedAction.class),
"execute",
Type.getMethodDescriptor(Type.VOID_TYPE, OBJECT_TYPE, CLOSURE_TYPE),
false);
finishVisitingMethod(methodVisitor);
return;
}
// Adds a void $propName(Closure<?> cl) method that throws MME, to avoid attempts to convert
// closure to something else
MethodVisitor methodVisitor =
declareMethod(
visitor,
property.getName(),
Type.getMethodDescriptor(Type.VOID_TYPE, CLOSURE_TYPE),
null);
putThisOnStack(methodVisitor);
putConstantOnStack(methodVisitor, property.getName());
methodVisitor.visitInsn(Opcodes.ICONST_1);
methodVisitor.visitTypeInsn(Opcodes.ANEWARRAY, OBJECT_TYPE.getInternalName());
methodVisitor.visitInsn(Opcodes.DUP);
methodVisitor.visitInsn(Opcodes.ICONST_0);
putFirstMethodArgumentOnStack(methodVisitor);
methodVisitor.visitInsn(Opcodes.AASTORE);
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL,
generatedType.getInternalName(),
"methodMissing",
METHOD_MISSING_METHOD_DESCRIPTOR,
false);
finishVisitingMethod(methodVisitor);
}