From 9c3789cbd0c607d58f024afd2e51dc2f6a1198d5 Mon Sep 17 00:00:00 2001
From: Nikolay Kim <fafhrd91@gmail.com>
Date: Thu, 18 Jul 2019 17:37:41 +0600
Subject: [PATCH] revert DateServiceInner changes

---
 actix-http/CHANGES.md    |  7 +++++++
 actix-http/src/config.rs | 31 +++++++++++++++----------------
 actix-http/src/error.rs  |  7 +++++--
 3 files changed, 27 insertions(+), 18 deletions(-)

diff --git a/actix-http/CHANGES.md b/actix-http/CHANGES.md
index 84033531d..cc695fa63 100644
--- a/actix-http/CHANGES.md
+++ b/actix-http/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## [0.2.7] - 2019-07-18
+
+### Added
+
+* Add support for downcasting response errors #986
+
+
 ## [0.2.6] - 2019-07-17
 
 ### Changed
diff --git a/actix-http/src/config.rs b/actix-http/src/config.rs
index 7d0e27635..bdfecef30 100644
--- a/actix-http/src/config.rs
+++ b/actix-http/src/config.rs
@@ -1,4 +1,4 @@
-use std::cell::Cell;
+use std::cell::UnsafeCell;
 use std::fmt;
 use std::fmt::Write;
 use std::rc::Rc;
@@ -162,13 +162,17 @@ impl ServiceConfig {
     pub fn set_date(&self, dst: &mut BytesMut) {
         let mut buf: [u8; 39] = [0; 39];
         buf[..6].copy_from_slice(b"date: ");
-        buf[6..35].copy_from_slice(&self.0.timer.date().bytes);
+        self.0
+            .timer
+            .set_date(|date| buf[6..35].copy_from_slice(&date.bytes));
         buf[35..].copy_from_slice(b"\r\n\r\n");
         dst.extend_from_slice(&buf);
     }
 
     pub(crate) fn set_date_header(&self, dst: &mut BytesMut) {
-        dst.extend_from_slice(&self.0.timer.date().bytes);
+        self.0
+            .timer
+            .set_date(|date| dst.extend_from_slice(&date.bytes));
     }
 }
 
@@ -206,28 +210,24 @@ impl fmt::Write for Date {
 struct DateService(Rc<DateServiceInner>);
 
 struct DateServiceInner {
-    current: Cell<Option<(Date, Instant)>>,
+    current: UnsafeCell<Option<(Date, Instant)>>,
 }
 
 impl DateServiceInner {
     fn new() -> Self {
         DateServiceInner {
-            current: Cell::new(None),
+            current: UnsafeCell::new(None),
         }
     }
 
-    fn get(&self) -> Option<(Date, Instant)> {
-        self.current.get()
-    }
-
     fn reset(&self) {
-        self.current.set(None);
+        unsafe { (&mut *self.current.get()).take() };
     }
 
     fn update(&self) {
         let now = Instant::now();
         let date = Date::new();
-        self.current.set(Some((date, now)));
+        *(unsafe { &mut *self.current.get() }) = Some((date, now));
     }
 }
 
@@ -237,7 +237,7 @@ impl DateService {
     }
 
     fn check_date(&self) {
-        if self.0.get().is_none() {
+        if unsafe { (&*self.0.current.get()).is_none() } {
             self.0.update();
 
             // periodic date update
@@ -253,13 +253,12 @@ impl DateService {
 
     fn now(&self) -> Instant {
         self.check_date();
-        self.0.get().unwrap().1
+        unsafe { (&*self.0.current.get()).as_ref().unwrap().1 }
     }
 
-    fn date(&self) -> Date {
+    fn set_date<F: FnMut(&Date)>(&self, mut f: F) {
         self.check_date();
-
-        self.0.get().unwrap().0
+        f(&unsafe { (&*self.0.current.get()).as_ref().unwrap().0 })
     }
 }
 
diff --git a/actix-http/src/error.rs b/actix-http/src/error.rs
index c4d663ade..cbb009a72 100644
--- a/actix-http/src/error.rs
+++ b/actix-http/src/error.rs
@@ -1,10 +1,10 @@
 //! Error and Result module
+use std::any::TypeId;
 use std::cell::RefCell;
 use std::io::Write;
 use std::str::Utf8Error;
 use std::string::FromUtf8Error;
 use std::{fmt, io, result};
-use std::any::TypeId;
 
 pub use actix_threadpool::BlockingError;
 use actix_utils::timeout::TimeoutError;
@@ -81,7 +81,10 @@ pub trait ResponseError: fmt::Debug + fmt::Display {
     }
 
     #[doc(hidden)]
-    fn __private_get_type_id__(&self) -> TypeId where Self: 'static {
+    fn __private_get_type_id__(&self) -> TypeId
+    where
+        Self: 'static,
+    {
         TypeId::of::<Self>()
     }
 }