✨ feature: added a cookie parser and appropriate tests

ctx_test.go

@@ -1008,6 +1008,35 @@ func Test_Ctx_CookieParserUsingTag(t *testing.T) {
 
 }
 
+// go test - run Benchmark_Ctx_CookieParser -v
+func Benchmark_Ctx_CookieParser(b *testing.B) {
+	app := New(Config{EnableSplittingOnParsers: true})
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+	type Cook struct {
+		ID       int      `cookie:"id"`
+		Name     string   `cookie:"name"`
+		Courses  []string `cookie:"courses"`
+		Enrolled bool     `cookie:"student"`
+		Fees     float32  `cookie:"fee"`
+		Grades   []uint8  `cookie:"score"`
+	}
+	cookie1 := new(Cook)
+	cookie1.Name = "Joseph"
+
+	c.Request().Header.Set("Cookie", "id=1")
+	c.Request().Header.Set("Cookie", "name=Joey")
+	c.Request().Header.Set("Cookie", "courses=maths,english, chemistry, physics")
+	c.Request().Header.Set("Cookie", "student=true")
+	c.Request().Header.Set("Cookie", "fee=45.78")
+	c.Request().Header.Set("Cookie", "score=7,6,10")
+
+	// Run the function b.N times
+	for i := 0; i < b.N; i++ {
+		_ = c.CookieParser(cookie1)
+	}
+}
+
 // go test -run Test_Ctx_Cookies
 func Test_Ctx_Cookies(t *testing.T) {
 	t.Parallel()

docs/api/ctx.md

@@ -403,6 +403,44 @@ app.Get("/", func(c *fiber.Ctx) error {
 })
 ```
 
+## CookieParser
+
+This method is similar to [BodyParser](ctx.md#bodyparser), but for cookie parameters.
+It is important to use the struct tag "cookie". For example, if you want to parse a cookie with a field called Age, you would use a struct field of `cookie:"age"`.
+
+```go title="Signature"
+func (c *Ctx) CookieParser(out interface{}) error
+```
+
+```go title="Example"
+// Field names should start with an uppercase letter
+type Person struct {
+    Name     string  `cookie:"name"`
+    Age      int     `cookie:"age"`
+    Job      bool    `cookie:"job"`
+}
+
+app.Get("/", func(c *fiber.Ctx) error {
+        p := new(Person)
+
+        if err := c.CookieParser(p); err != nil {
+            return err
+        }
+
+        log.Println(p.Name)     // Joseph
+        log.Println(p.Age)     // 23
+        log.Println(p.Job) // true
+
+        // ...
+})
+// Run tests with the following curl command
+
+// curl "http://localhost:3000/?name=john&pass=doe&products=shoe,hat"
+// curl.exe --cookie "name=Joseph; age=23; job=true" http://localhost:8000/
+```
+
+
+
 ## Cookies
 
 Get cookie value by key, you could pass an optional default value that will be returned if the cookie key does not exist.