public static IRubyObject instVarNullToNil(IRubyObject value, IRubyObject nil, String name) {
if (value == null) {
Ruby runtime = nil.getRuntime();
if (runtime.isVerbose()) {
nil.getRuntime()
.getWarnings()
.warning(
IRubyWarnings.ID.IVAR_NOT_INITIALIZED,
"instance variable " + name + " not initialized");
}
return nil;
}
return value;
}
public final IRubyObject getVariable(Ruby runtime, int index, String name, IRubyObject object) {
VariableAccessor variableAccessor = variableReaders[index];
RubyClass cls = object.getMetaClass().getRealClass();
if (variableAccessor.getClassId() != cls.hashCode()) {
variableReaders[index] = variableAccessor = cls.getVariableAccessorForRead(name);
}
IRubyObject value = (IRubyObject) variableAccessor.get(object);
if (value != null) {
return value;
}
if (runtime.isVerbose()) {
warnAboutUninitializedIvar(runtime, name);
}
return runtime.getNil();
}