From 1853e16bc9406399bcd979a766d4b48b3fc50a38 Mon Sep 17 00:00:00 2001
From: Sergey Romanov <xxsmotur@gmail.com>
Date: Fri, 15 May 2015 22:30:06 +0500
Subject: [PATCH] Append queue

---
 context.go      | 20 ++++++++++++++++++++
 context_test.go | 10 ++++++++++
 2 files changed, 30 insertions(+)

diff --git a/context.go b/context.go
index fdca9e3e..cfd7850c 100644
--- a/context.go
+++ b/context.go
@@ -69,6 +69,7 @@ type Context struct {
 
 	Engine   *Engine
 	Keys     map[string]interface{}
+	Queue     []interface{}
 	Errors   errorMsgs
 	Accepted []string
 }
@@ -271,6 +272,25 @@ func (c *Context) Value(key interface{}) interface{} {
 	return c.Context.Value(key)
 }
 
+//Enqueue new item
+func (c *Context) Enqueue(item interface{}) {
+	if c.Queue == nil {
+		c.Queue = []interface{}{}
+	}
+	c.Queue = append(c.Queue, item)
+}
+
+//Dequeue returns the value from top of the queue
+func (c *Context) Dequeue () (interface{}, error) {
+	size := len(c.Queue)
+	if c.Queue == nil || size == 0 {
+		return nil, errors.New("Queue is empty")
+	}
+	result := c.Queue[size-1]
+	c.Queue = c.Queue[0:size-1]
+	return result, nil
+}
+
 /************************************/
 /********* PARSING REQUEST **********/
 /************************************/
diff --git a/context_test.go b/context_test.go
index 3c8a87ff..63dc2869 100644
--- a/context_test.go
+++ b/context_test.go
@@ -91,6 +91,16 @@ func TestContextSetGetValues(t *testing.T) {
 
 }
 
+func TestContextQueue(t *testing.T) {
+	c, _, _ := createTestContext()
+	c.Enqueue("value")
+	c.Enqueue("data")
+	v, _ := c.Dequeue()
+	assert.Exactly(t, v, "data")
+	v2, _ := c.Dequeue()
+	assert.Exactly(t, v2, "value")
+}
+
 func TestContextCopy(t *testing.T) {
 	c, _, _ := createTestContext()
 	c.index = 2