public DynamicObject getNormalObjectSingletonClass(DynamicObject object) {
CompilerAsserts.neverPartOfCompilation();
if (RubyGuards.isRubyClass(object)) { // For the direct caller
return ClassNodes.getSingletonClass(object);
}
if (Layouts.CLASS.getIsSingleton(Layouts.BASIC_OBJECT.getMetaClass(object))) {
return Layouts.BASIC_OBJECT.getMetaClass(object);
}
CompilerDirectives.transferToInterpreter();
final DynamicObject logicalClass = BasicObjectNodes.getLogicalClass(object);
DynamicObject attached = null;
if (RubyGuards.isRubyModule(object)) {
attached = object;
}
final String name =
String.format(
"#<Class:#<%s:0x%x>>",
Layouts.MODULE.getFields(logicalClass).getName(),
BasicObjectNodes.verySlowGetObjectID(object));
final DynamicObject singletonClass =
ClassNodes.createSingletonClassOfObject(getContext(), logicalClass, attached, name);
propagateFrozen(object, singletonClass);
Layouts.BASIC_OBJECT.setMetaClass(object, singletonClass);
return singletonClass;
}
public static DynamicObject createOneSingletonClass(DynamicObject rubyClass) {
CompilerAsserts.neverPartOfCompilation();
if (Layouts.CLASS.getIsSingleton(Layouts.BASIC_OBJECT.getMetaClass(rubyClass))) {
return Layouts.BASIC_OBJECT.getMetaClass(rubyClass);
}
final DynamicObject singletonSuperclass;
if (getSuperClass(rubyClass) == null) {
singletonSuperclass = Layouts.BASIC_OBJECT.getLogicalClass(rubyClass);
} else {
singletonSuperclass = createOneSingletonClass(getSuperClass(rubyClass));
}
String name = String.format("#<Class:%s>", Layouts.MODULE.getFields(rubyClass).getName());
Layouts.BASIC_OBJECT.setMetaClass(
rubyClass,
ClassNodes.createRubyClass(
Layouts.MODULE.getFields(Layouts.BASIC_OBJECT.getLogicalClass(rubyClass)).getContext(),
Layouts.BASIC_OBJECT.getLogicalClass(rubyClass),
null,
singletonSuperclass,
name,
true,
rubyClass));
return Layouts.BASIC_OBJECT.getMetaClass(rubyClass);
}