static TypeParameterMatcher generate(Class<?> type, ClassLoader classLoader) {
final String className = "io.netty.util.internal.__matchers__." + type.getName() + "Matcher";
try {
try {
return (TypeParameterMatcher) Class.forName(className, true, classLoader).newInstance();
} catch (Exception e) {
// Not defined in the specified class loader.
}
CtClass c = classPool.getAndRename(NoOpTypeParameterMatcher.class.getName(), className);
c.setModifiers(c.getModifiers() | Modifier.FINAL);
c.getDeclaredMethod("match").setBody("{ return $1 instanceof " + type.getName() + "; }");
byte[] byteCode = c.toBytecode();
c.detach();
Method method =
ClassLoader.class.getDeclaredMethod(
"defineClass", String.class, byte[].class, int.class, int.class);
method.setAccessible(true);
Class<?> generated =
(Class<?>) method.invoke(classLoader, className, byteCode, 0, byteCode.length);
logger.debug("Generated: {}", generated.getName());
return (TypeParameterMatcher) generated.newInstance();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public void onWrite(ClassPool pool, String className)
throws NotFoundException, CannotCompileException {
CtClass cc = pool.get(className);
try {
if (isPersistent(className)) {
CtClass base = cc.getSuperclass();
CtConstructor cons = new CtConstructor(constructorParams, cc);
if (base.subclassOf(persistent) || base == object) {
cons.setBody(null);
cc.addConstructor(cons);
if (base == object) {
cc.setSuperclass(persistent);
}
} else {
if (!isPersistent(base.getName())) {
throw new NotFoundException(
"Base class " + base.getName() + " was not declared as persistent");
}
cons.setBody("super($0);");
cc.addConstructor(cons);
}
preprocessMethods(cc, true, true);
if (base == persistent || base == object) {
CtMethod m = new CtMethod(isRecursive, cc, null);
m.setBody("return false;");
cc.addMethod(m);
addSerializeMethods(cc, false);
} else if (base.subtypeOf(serializable)) {
addSerializeMethods(cc, true);
}
if ((cc.getModifiers() & Modifier.PRIVATE) == 0) {
CtClass f = pool.makeClass(className + "LoadFactory");
f.addInterface(factory);
CtMethod c = new CtMethod(create, f, null);
c.setBody("return new " + className + "($1);");
f.addMethod(c);
CtNewConstructor.defaultConstructor(f);
}
} else {
preprocessMethods(
cc, cc.subtypeOf(persistent) && cc != persistent, !className.startsWith("org.nachodb"));
}
} catch (Exception x) {
x.printStackTrace();
}
}
private static void treatClassToPatch(CtClass c) throws CannotCompileException {
if (c == null) {
throw new IllegalArgumentException("the class to patch cannot be null");
}
int modifiers = c.getModifiers();
if (Modifier.isAnnotation(modifiers)) {
throw new IllegalArgumentException("the class to patch cannot be an annotation");
}
if (Modifier.isInterface(modifiers)) {
throw new IllegalArgumentException("the class to patch cannot be an interface");
}
if (Modifier.isEnum(modifiers)) {
throw new IllegalArgumentException("the class to patch cannot be an enum");
}
c.setModifiers(Modifier.PUBLIC);
addDefaultConstructor(c);
}