boolean makeGetField(
final Expression receiver,
final ClassNode receiverType,
final String fieldName,
final boolean implicitThis,
final boolean samePackage) {
FieldNode field = receiverType.getField(fieldName);
// direct access is allowed if we are in the same class as the declaring class
// or we are in an inner class
if (field != null && isDirectAccessAllowed(field, controller.getClassNode(), samePackage)) {
CompileStack compileStack = controller.getCompileStack();
MethodVisitor mv = controller.getMethodVisitor();
if (field.isStatic()) {
mv.visitFieldInsn(
GETSTATIC,
BytecodeHelper.getClassInternalName(field.getOwner()),
fieldName,
BytecodeHelper.getTypeDescription(field.getOriginType()));
controller.getOperandStack().push(field.getOriginType());
} else {
if (implicitThis) {
compileStack.pushImplicitThis(implicitThis);
}
receiver.visit(controller.getAcg());
if (implicitThis) compileStack.popImplicitThis();
if (!controller.getOperandStack().getTopOperand().isDerivedFrom(field.getOwner())) {
mv.visitTypeInsn(CHECKCAST, BytecodeHelper.getClassInternalName(field.getOwner()));
}
mv.visitFieldInsn(
GETFIELD,
BytecodeHelper.getClassInternalName(field.getOwner()),
fieldName,
BytecodeHelper.getTypeDescription(field.getOriginType()));
}
controller.getOperandStack().replace(field.getOriginType());
return true;
}
ClassNode superClass = receiverType.getSuperClass();
if (superClass != null) {
return makeGetField(receiver, superClass, fieldName, implicitThis, false);
}
return false;
}
/** Adds special accessors for private constants so that inner classes can retrieve them. */
@SuppressWarnings("unchecked")
private void addPrivateFieldsAccessors(ClassNode node) {
Set<ASTNode> accessedFields =
(Set<ASTNode>) node.getNodeMetaData(StaticTypesMarker.PV_FIELDS_ACCESS);
if (accessedFields == null) return;
Map<String, MethodNode> privateConstantAccessors =
(Map<String, MethodNode>) node.getNodeMetaData(PRIVATE_FIELDS_ACCESSORS);
if (privateConstantAccessors != null) {
// already added
return;
}
int acc = -1;
privateConstantAccessors = new HashMap<String, MethodNode>();
final int access = Opcodes.ACC_STATIC | Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC;
for (FieldNode fieldNode : node.getFields()) {
if (accessedFields.contains(fieldNode)) {
acc++;
Parameter param = new Parameter(node.getPlainNodeReference(), "$that");
Expression receiver =
fieldNode.isStatic() ? new ClassExpression(node) : new VariableExpression(param);
Statement stmt =
new ExpressionStatement(new PropertyExpression(receiver, fieldNode.getName()));
MethodNode accessor =
node.addMethod(
"pfaccess$" + acc,
access,
fieldNode.getOriginType(),
new Parameter[] {param},
ClassNode.EMPTY_ARRAY,
stmt);
privateConstantAccessors.put(fieldNode.getName(), accessor);
}
}
node.setNodeMetaData(PRIVATE_FIELDS_ACCESSORS, privateConstantAccessors);
}