private static void findFields(
ThreadContext context,
RubyModule topModule,
IRubyObject args[],
boolean asReader,
boolean asWriter) {
Map<String, String> fieldMap = getFieldListFromArgs(args);
for (RubyModule module = topModule; module != null; module = module.getSuperClass()) {
Class<?> javaClass = getJavaClass(context, module);
// Hit a non-java proxy class (included Modules can be a cause of this...skip)
if (javaClass == null) continue;
Field[] fields = JavaClass.getDeclaredFields(javaClass);
for (int j = 0; j < fields.length; j++) {
installField(context, fieldMap, fields[j], module, asReader, asWriter);
}
}
// We could not find all of them print out first one (we could print them all?)
if (!fieldMap.isEmpty()) {
throw JavaClass.undefinedFieldError(
context.getRuntime(), topModule.getName(), fieldMap.keySet().iterator().next());
}
}
protected RubyArray buildRubyArray(Class[] classes) {
RubyArray result = getRuntime().newArray(classes.length);
for (int i = 0; i < classes.length; i++) {
result.append(JavaClass.get(getRuntime(), classes[i]));
}
return result;
}
@JRubyMethod
public static IRubyObject to_java(
ThreadContext context, IRubyObject fromObject, IRubyObject type) {
if (type.isNil()) {
return to_java(context, fromObject);
}
Ruby runtime = context.runtime;
JavaClass targetType = getTargetType(context, runtime, type);
if (fromObject instanceof RubyArray) {
return targetType.javaArrayFromRubyArray(context, fromObject);
} else {
return Java.getInstance(runtime, fromObject.toJava(targetType.javaClass()));
}
}
private static JavaClass getTargetType(ThreadContext context, Ruby runtime, IRubyObject type) {
JavaClass targetType;
if (type instanceof RubyString || type instanceof RubySymbol) {
targetType = runtime.getJavaSupport().getNameClassMap().get(type.asJavaString());
if (targetType == null) targetType = JavaClass.forNameVerbose(runtime, type.asJavaString());
} else if (type instanceof RubyModule && type.respondsTo("java_class")) {
targetType = (JavaClass) Helpers.invoke(context, type, "java_class");
} else if (type instanceof JavaProxy) {
if (((JavaProxy) type).getObject() instanceof Class) {
targetType = JavaClass.get(runtime, (Class) ((JavaProxy) type).getObject());
} else {
throw runtime.newTypeError("not a valid target type: " + type);
}
} else {
throw runtime.newTypeError("unable to convert to type: " + type);
}
return targetType;
}
@JRubyMethod
public IRubyObject java_class() {
return JavaClass.get(getRuntime(), getJavaClass());
}
private static boolean assignable(Class type, IRubyObject arg) {
return JavaClass.assignable(type, argClass(arg));
}