public void handle(
final AccessLevel level,
final Class<? extends java.lang.annotation.Annotation> annotationType) {
LOMBOK_NODE_TYPE mayBeField = annotationNode.up();
if (mayBeField == null) return;
TYPE_TYPE type = typeOf(annotationNode, ast);
List<FIELD_TYPE> fields = new ArrayList<FIELD_TYPE>();
if (mayBeField.getKind() == Kind.FIELD) {
for (LOMBOK_NODE_TYPE node : annotationNode.upFromAnnotationToFields()) {
fields.add(fieldOf(node, ast));
}
} else if (mayBeField.getKind() == Kind.TYPE) {
for (FIELD_TYPE field : type.fields()) {
if (!field.annotations(SETTER_PATTERN).isEmpty()) continue;
if (field.name().startsWith("$")) continue;
if (field.isFinal()) continue;
if (field.isStatic()) continue;
fields.add(field);
}
} else {
annotationNode.addError(canBeUsedOnClassAndFieldOnly(annotationType));
return;
}
generateSetter(type, fields, level);
}
private void generateGetVetoableSupportMethod(final TYPE_TYPE type) {
if (type.hasMethod(VETOABLE_CHANGE_SUPPORT_METHOD_NAME)) return;
type.editor()
.injectMethod(
MethodDecl(Type(VetoableChangeSupport.class), VETOABLE_CHANGE_SUPPORT_METHOD_NAME)
.makePrivate() //
.withStatement(
If(Equal(Field(VETOABLE_CHANGE_SUPPORT_FIELD_NAME), Null()))
.Then(
Block() //
.withStatement(
Synchronized(
Field(VETOABLE_CHANGE_SUPPORT_FIELD_NAME + "Lock")) //
.withStatement(
If(Equal(
Field(VETOABLE_CHANGE_SUPPORT_FIELD_NAME),
Null()))
.Then(
Block() //
.withStatement(
Assign(
Field(
VETOABLE_CHANGE_SUPPORT_FIELD_NAME),
New(Type(
VetoableChangeSupport
.class))
.withArgument(This())))))))) //
.withStatement(Return(Field(VETOABLE_CHANGE_SUPPORT_FIELD_NAME))));
}
private void generateSetter(
final TYPE_TYPE type,
final FIELD_TYPE field,
final AccessLevel level,
final String propertyNameFieldName) {
String fieldName = field.name();
boolean isBoolean = field.isOfType("boolean");
String setterName = TransformationsUtil.toSetterName(fieldName, isBoolean);
if (type.hasMethod(setterName)) return;
String oldValueName = OLD_VALUE_VARIABLE_NAME;
List<lombok.ast.Annotation> nonNulls = field.annotations(TransformationsUtil.NON_NULL_PATTERN);
MethodDecl methodDecl =
MethodDecl(Type("void"), setterName)
.withAccessLevel(level)
.withArgument(Arg(field.type(), fieldName).withAnnotations(nonNulls));
if (!nonNulls.isEmpty() && !field.isPrimitive()) {
methodDecl.withStatement(
If(Equal(Name(fieldName), Null()))
.Then(Throw(New(Type(NullPointerException.class)).withArgument(String(fieldName)))));
}
methodDecl
.withStatement(
LocalDecl(field.type(), oldValueName)
.makeFinal()
.withInitialization(Field(fieldName))) //
.withStatement(Assign(Field(fieldName), Name(fieldName))) //
.withStatement(
Call(Call(PROPERTY_CHANGE_SUPPORT_METHOD_NAME), FIRE_PROPERTY_CHANGE_METHOD_NAME) //
.withArgument(Name(propertyNameFieldName))
.withArgument(Name(oldValueName))
.withArgument(Field(fieldName)));
type.injectMethod(methodDecl);
}
private void generateSetter(
final TYPE_TYPE type,
final FIELD_TYPE field,
final AccessLevel level,
final boolean vetoable,
final boolean throwVetoException,
final String propertyNameFieldName) {
String fieldName = field.filteredName();
boolean isBoolean = field.isOfType("boolean");
String setterName =
toSetterName(field.getAnnotationValue(Accessors.class), field.name(), isBoolean);
if (type.hasMethod(setterName, field.type())) return;
String oldValueName = OLD_VALUE_VARIABLE_NAME;
List<lombok.ast.Annotation> nonNulls = field.annotations(TransformationsUtil.NON_NULL_PATTERN);
MethodDecl methodDecl =
MethodDecl(Type("void"), setterName)
.withAccessLevel(level)
.withArgument(Arg(field.type(), fieldName).withAnnotations(nonNulls));
if (!nonNulls.isEmpty() && !field.isPrimitive()) {
methodDecl.withStatement(
If(Equal(Name(fieldName), Null()))
.Then(Throw(New(Type(NullPointerException.class)).withArgument(String(fieldName)))));
}
methodDecl.withStatement(
LocalDecl(field.type(), oldValueName).makeFinal().withInitialization(Field(fieldName)));
if (vetoable) {
if (throwVetoException) {
methodDecl.withThrownException(Type(PropertyVetoException.class));
methodDecl.withStatement(
Call(FIRE_VETOABLE_CHANGE_METHOD_NAME) //
.withArgument(Name(propertyNameFieldName))
.withArgument(Name(oldValueName))
.withArgument(Name(fieldName)));
} else {
methodDecl.withStatement(
Try(Block()
.withStatement(
Call(FIRE_VETOABLE_CHANGE_METHOD_NAME) //
.withArgument(Name(propertyNameFieldName))
.withArgument(Name(oldValueName))
.withArgument(Name(fieldName)))) //
.Catch(
Arg(Type(PropertyVetoException.class), E_VALUE_VARIABLE_NAME),
Block().withStatement(Return())));
}
}
methodDecl
.withStatement(Assign(Field(fieldName), Name(fieldName))) //
.withStatement(
Call(FIRE_PROPERTY_CHANGE_METHOD_NAME) //
.withArgument(Name(propertyNameFieldName))
.withArgument(Name(oldValueName))
.withArgument(Name(fieldName)));
type.editor().injectMethod(methodDecl);
}
private void generatePropertyNameConstant(
final TYPE_TYPE type, final FIELD_TYPE field, final String propertyNameFieldName) {
String propertyName = field.name();
if (type.hasField(propertyNameFieldName)) return;
type.injectField(
FieldDecl(Type(String.class), propertyNameFieldName)
.makePublic()
.makeStatic()
.makeFinal() //
.withInitialization(String(propertyName)));
}
private void generateVetoableChangeListenerMethod(final String methodName, final TYPE_TYPE type) {
if (type.hasMethod(methodName, Type(VetoableChangeListener.class))) return;
type.editor()
.injectMethod(
MethodDecl(Type("void"), methodName)
.makePublic()
.withArgument(Arg(Type(VetoableChangeListener.class), LISTENER_ARG_NAME)) //
.withStatement(
Call(Call(VETOABLE_CHANGE_SUPPORT_METHOD_NAME), methodName)
.withArgument(Name(LISTENER_ARG_NAME))));
}
public FieldDecl addField(
final TYPE_TYPE type, TypeRef fieldType, String fieldName, Expression<?> initialization) {
final FieldDecl fieldDecl = FieldDecl(fieldType, fieldName).makePrivate();
if (initialization != null) {
fieldDecl.withInitialization(initialization);
}
type.editor().injectField(fieldDecl);
return fieldDecl;
}
public FieldDecl addField(
final TYPE_TYPE type,
MethodDescriptor.Type fieldType,
String fieldName,
Expression<?> initialization) {
final FieldDecl fieldDecl = FieldDecl(asTypeRef(fieldType), fieldName).makePrivate();
if (initialization != null) fieldDecl.withInitialization(initialization);
type.editor().injectField(fieldDecl);
return fieldDecl;
}
private void generateVetoableChangeSupportFields(final TYPE_TYPE type) {
if (!type.hasField(VETOABLE_CHANGE_SUPPORT_FIELD_NAME)) {
type.editor()
.injectField(
FieldDecl(Type(VetoableChangeSupport.class), VETOABLE_CHANGE_SUPPORT_FIELD_NAME)
.makePrivate()
.makeTransient()
.makeVolatile());
}
if (!type.hasField(VETOABLE_CHANGE_SUPPORT_FIELD_NAME + "Lock")) {
type.editor()
.injectField(
FieldDecl(
Type(Object.class).withDimensions(1),
VETOABLE_CHANGE_SUPPORT_FIELD_NAME + "Lock")
.makePrivate()
.makeFinal() //
.withInitialization(
NewArray(Type(Object.class)).withDimensionExpression(Number(0))));
}
}
private void generateFirePropertyChangeMethod(final TYPE_TYPE type) {
if (type.hasMethod(
FIRE_PROPERTY_CHANGE_METHOD_NAME,
Type(String.class),
Type(Object.class),
Type(Object.class))) return;
type.editor()
.injectMethod(
MethodDecl(Type("void"), FIRE_PROPERTY_CHANGE_METHOD_NAME)
.makePublic() //
.withArgument(Arg(Type(String.class), PROPERTY_NAME_ARG_NAME))
.withArgument(Arg(Type(Object.class), OLD_VALUE_ARG_NAME))
.withArgument(Arg(Type(Object.class), NEW_VALUE_ARG_NAME)) //
.withStatement(
Call(
Call(PROPERTY_CHANGE_SUPPORT_METHOD_NAME),
FIRE_PROPERTY_CHANGE_METHOD_NAME) //
.withArgument(Name(PROPERTY_NAME_ARG_NAME))
.withArgument(Name(OLD_VALUE_ARG_NAME))
.withArgument(Name(NEW_VALUE_ARG_NAME))));
}
public void delegateMethodsTo(
TYPE_TYPE type,
MethodDescriptor[] methodDescriptors,
Expression<?> receiver,
Map<String, String> methodMapper) {
for (MethodDescriptor methodDesc : methodDescriptors) {
List<TypeRef> argTypes = new ArrayList<>();
List<Argument> methodArgs = new ArrayList<>();
List<Expression<?>> callArgs = new ArrayList<>();
int argCounter = 0;
for (MethodDescriptor.Type argType : methodDesc.arguments) {
String argName = "arg" + argCounter++;
TypeRef argTypeRef = asTypeRef(argType);
argTypes.add(argTypeRef);
Argument arg = Arg(argTypeRef, argName);
if (argType.annotations.length > 0) {
List<Annotation> annotations = new ArrayList<>();
for (int i = 0; i < argType.annotations.length; i++) {
annotations.add(Annotation(asTypeRef(argType.annotations[i])));
}
arg.withAnnotations(annotations);
}
methodArgs.add(arg);
callArgs.add(Name(argName));
}
if (type.hasMethodIncludingSupertypes(
methodDesc.methodName, argTypes.toArray(new TypeRef[argTypes.size()]))) {
continue;
}
String delegateMethodName = methodMapper.get(methodDesc.methodName);
if (delegateMethodName == null) {
delegateMethodName = methodDesc.methodName;
}
Call methodCall = Call(receiver, delegateMethodName).withArguments(callArgs);
MethodDecl methodDecl =
MethodDecl(asTypeRef(methodDesc.returnType), methodDesc.methodName)
.makePublic()
.withArguments(methodArgs);
if (VOID.equals(methodDesc.returnType.type)) {
methodDecl.withStatement(methodCall);
} else {
methodDecl.withStatement(Return(methodCall));
}
if (methodDesc.typeParameters.length > 0) {
List<TypeParam> types = new ArrayList<>();
for (int i = 0; i < methodDesc.typeParameters.length; i++) {
types.add(asTypeParam(methodDesc.typeParameters[i]));
}
methodDecl.withTypeParameters(types);
}
if (methodDesc.exceptions.length > 0) {
List<TypeRef> exceptions = new ArrayList<>();
for (int i = 0; i < methodDesc.exceptions.length; i++) {
exceptions.add(asTypeRef(methodDesc.exceptions[i]));
}
methodDecl.withThrownExceptions(exceptions);
}
if (methodDesc.annotations.length > 0) {
List<Annotation> annotations = new ArrayList<>();
for (int i = 0; i < methodDesc.annotations.length; i++) {
annotations.add(Annotation(asTypeRef(methodDesc.annotations[i])));
}
methodDecl.withAnnotations(annotations);
}
type.editor().injectMethod(methodDecl);
}
}
