@SuppressWarnings({"rawtypes"})
class DispatcherGenerator implements CallbackGenerator {
public static final DispatcherGenerator INSTANCE = new DispatcherGenerator(false);
public static final DispatcherGenerator PROXY_REF_INSTANCE = new DispatcherGenerator(true);
private static final Type DISPATCHER = TypeUtils.parseType("ext.jtester.cglib.proxy.Dispatcher");
private static final Type PROXY_REF_DISPATCHER =
TypeUtils.parseType("ext.jtester.cglib.proxy.ProxyRefDispatcher");
private static final Signature LOAD_OBJECT = TypeUtils.parseSignature("Object loadObject()");
private static final Signature PROXY_REF_LOAD_OBJECT =
TypeUtils.parseSignature("Object loadObject(Object)");
private boolean proxyRef;
private DispatcherGenerator(boolean proxyRef) {
this.proxyRef = proxyRef;
}
public void generate(ClassEmitter ce, Context context, List methods) {
for (Iterator it = methods.iterator(); it.hasNext(); ) {
MethodInfo method = (MethodInfo) it.next();
if (!TypeUtils.isProtected(method.getModifiers())) {
CodeEmitter e = context.beginMethod(ce, method);
context.emitCallback(e, context.getIndex(method));
if (proxyRef) {
e.load_this();
e.invoke_interface(PROXY_REF_DISPATCHER, PROXY_REF_LOAD_OBJECT);
} else {
e.invoke_interface(DISPATCHER, LOAD_OBJECT);
}
e.checkcast(method.getClassInfo().getType());
e.load_args();
e.invoke(method);
e.return_value();
e.end_method();
}
}
}
public void generateStatic(CodeEmitter e, Context context, List methods) {}
}
class InvocationHandlerGenerator implements CallbackGenerator {
public static final InvocationHandlerGenerator INSTANCE = new InvocationHandlerGenerator();
private static final Type INVOCATION_HANDLER =
TypeUtils.parseType("net.sf.cglib.proxy.InvocationHandler");
private static final Type UNDECLARED_THROWABLE_EXCEPTION =
TypeUtils.parseType("net.sf.cglib.proxy.UndeclaredThrowableException");
private static final Type METHOD = TypeUtils.parseType("java.lang.reflect.Method");
private static final Signature INVOKE =
TypeUtils.parseSignature("Object invoke(Object, java.lang.reflect.Method, Object[])");
public void generate(ClassEmitter ce, Context context, List methods) {
for (Iterator it = methods.iterator(); it.hasNext(); ) {
MethodInfo method = (MethodInfo) it.next();
Signature impl = context.getImplSignature(method);
ce.declare_field(Constants.PRIVATE_FINAL_STATIC, impl.getName(), METHOD, null);
CodeEmitter e = context.beginMethod(ce, method);
Block handler = e.begin_block();
context.emitCallback(e, context.getIndex(method));
e.load_this();
e.getfield(impl.getName());
e.create_arg_array();
e.invoke_interface(INVOCATION_HANDLER, INVOKE);
e.unbox(method.getSignature().getReturnType());
e.return_value();
handler.end();
EmitUtils.wrap_undeclared_throwable(
e, handler, method.getExceptionTypes(), UNDECLARED_THROWABLE_EXCEPTION);
e.end_method();
}
}
public void generateStatic(CodeEmitter e, Context context, List methods) {
for (Iterator it = methods.iterator(); it.hasNext(); ) {
MethodInfo method = (MethodInfo) it.next();
EmitUtils.load_method(e, method);
e.putfield(context.getImplSignature(method).getName());
}
}
}
class BulkBeanEmitter extends ClassEmitter {
private static final Signature GET_PROPERTY_VALUES =
TypeUtils.parseSignature("void getPropertyValues(Object, Object[])");
private static final Signature SET_PROPERTY_VALUES =
TypeUtils.parseSignature("void setPropertyValues(Object, Object[])");
private static final Signature CSTRUCT_EXCEPTION =
TypeUtils.parseConstructor("Throwable, int");
private static final Type BULK_BEAN =
TypeUtils.parseType("net.sf.cglib.beans.BulkBean");
private static final Type BULK_BEAN_EXCEPTION =
TypeUtils.parseType("net.sf.cglib.beans.BulkBeanException");
public BulkBeanEmitter(ClassVisitor v,
String className,
Class target,
String[] getterNames,
String[] setterNames,
Class[] types) {
super(v);
Method[] getters = new Method[getterNames.length];
Method[] setters = new Method[setterNames.length];
validate(target, getterNames, setterNames, types, getters, setters);
begin_class(Constants.V1_2, Constants.ACC_PUBLIC, className, BULK_BEAN, null, Constants.SOURCE_FILE);
EmitUtils.null_constructor(this);
generateGet(target, getters);
generateSet(target, setters);
end_class();
}
private void generateGet(final Class target, final Method[] getters) {
CodeEmitter e = begin_method(Constants.ACC_PUBLIC, GET_PROPERTY_VALUES, null);
if (getters.length >= 0) {
e.load_arg(0);
e.checkcast(Type.getType(target));
Local bean = e.make_local();
e.store_local(bean);
for (int i = 0; i < getters.length; i++) {
if (getters[i] != null) {
MethodInfo getter = ReflectUtils.getMethodInfo(getters[i]);
e.load_arg(1);
e.push(i);
e.load_local(bean);
e.invoke(getter);
e.box(getter.getSignature().getReturnType());
e.aastore();
}
}
}
e.return_value();
e.end_method();
}
private void generateSet(final Class target, final Method[] setters) {
// setPropertyValues
CodeEmitter e = begin_method(Constants.ACC_PUBLIC, SET_PROPERTY_VALUES, null);
if (setters.length > 0) {
Local index = e.make_local(Type.INT_TYPE);
e.push(0);
e.store_local(index);
e.load_arg(0);
e.checkcast(Type.getType(target));
e.load_arg(1);
Block handler = e.begin_block();
int lastIndex = 0;
for (int i = 0; i < setters.length; i++) {
if (setters[i] != null) {
MethodInfo setter = ReflectUtils.getMethodInfo(setters[i]);
int diff = i - lastIndex;
if (diff > 0) {
e.iinc(index, diff);
lastIndex = i;
}
e.dup2();
e.aaload(i);
e.unbox(setter.getSignature().getArgumentTypes()[0]);
e.invoke(setter);
}
}
handler.end();
e.return_value();
e.catch_exception(handler, Constants.TYPE_THROWABLE);
e.new_instance(BULK_BEAN_EXCEPTION);
e.dup_x1();
e.swap();
e.load_local(index);
e.invoke_constructor(BULK_BEAN_EXCEPTION, CSTRUCT_EXCEPTION);
e.athrow();
} else {
e.return_value();
}
e.end_method();
}
private static void validate(Class target,
String[] getters,
String[] setters,
Class[] types,
Method[] getters_out,
Method[] setters_out) {
int i = -1;
if (setters.length != types.length || getters.length != types.length) {
throw new BulkBeanException("accessor array length must be equal type array length", i);
}
try {
for (i = 0; i < types.length; i++) {
if (getters[i] != null) {
Method method = ReflectUtils.findDeclaredMethod(target, getters[i], null);
if (method.getReturnType() != types[i]) {
throw new BulkBeanException("Specified type " + types[i] +
" does not match declared type " + method.getReturnType(), i);
}
if (Modifier.isPrivate(method.getModifiers())) {
throw new BulkBeanException("Property is private", i);
}
getters_out[i] = method;
}
if (setters[i] != null) {
Method method = ReflectUtils.findDeclaredMethod(target, setters[i], new Class[]{ types[i] });
if (Modifier.isPrivate(method.getModifiers()) ){
throw new BulkBeanException("Property is private", i);
}
setters_out[i] = method;
}
}
} catch (NoSuchMethodException e) {
throw new BulkBeanException("Cannot find specified property", i);
}
}
}
