@Specialization(guards = "isRubyModule(lexicalParentModule)")
public Object defineModule(VirtualFrame frame, DynamicObject lexicalParentModule) {
final RubyConstant constant = lookupForExistingModule(frame, name, lexicalParentModule);
final DynamicObject definingModule;
if (needToDefineProfile.profile(constant == null)) {
definingModule =
ModuleNodes.createModule(
getContext(), coreLibrary().getModuleClass(), lexicalParentModule, name, this);
} else {
final Object constantValue = constant.getValue();
if (!RubyGuards.isRubyModule(constantValue) || RubyGuards.isRubyClass(constantValue)) {
errorProfile.enter();
throw new RaiseException(coreExceptions().typeErrorIsNotA(name, "module", this));
}
definingModule = (DynamicObject) constantValue;
}
return definingModule;
}
