package luan.impl;

import luan.LuanElement;


final class GetUpVar extends CodeImpl implements Expr {
	private final int index;

	GetUpVar(LuanElement se,int index) {
		super(se);
		if( index < 0 )  throw new RuntimeException();
		this.index = index;
	}

	@Override public Object eval(LuanStateImpl luan) {
		return luan.closure().upValues()[index].get();
	}
}