From da3163460020406a41a486881d341c25012042b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20K=C3=A4chele?= <mail@timkaechele.me>
Date: Fri, 27 Oct 2023 14:56:19 +0200
Subject: [PATCH] Implement limit

---
 lib/rex/limit.rb | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 lib/rex/limit.rb

diff --git a/lib/rex/limit.rb b/lib/rex/limit.rb
new file mode 100644
index 0000000..9645ddd
--- /dev/null
+++ b/lib/rex/limit.rb
@@ -0,0 +1,40 @@
+module Rex
+  class Limit
+    def initialize(price)
+      @price = price
+      @first_order = nil
+      @last_order = nil
+      @order_count = 0
+    end
+
+    def peek_first_order
+      @first_order
+    end
+
+    def pop_first_order
+      order = @first_order
+      @first_order = @first_order.next_order
+      if @first_order == nil
+        @last_order = nil
+      end
+
+      @order_count -= 1
+      order
+    end
+
+    def add_order(order)
+      if empty?
+        @first_order = order
+        @last_order = order
+      else
+        @last_order.next_order = order
+        @last_order = order
+      end
+      @order_count += 1
+    end
+
+    def empty?
+      @order_count == 0
+    end
+  end
+end