1 files changed, 130 insertions, 0 deletions
diff --git a/vendor/core-foundation/src/date.rs b/vendor/core-foundation/src/date.rs
new file mode 100644
index 000000000..57ee7211e
--- /dev/null
+++ b/vendor/core-foundation/src/date.rs
@@ -0,0 +1,130 @@
+// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Core Foundation date objects.
+
+pub use core_foundation_sys::date::*;
+use core_foundation_sys::base::kCFAllocatorDefault;
+
+use base::TCFType;
+
+#[cfg(feature = "with-chrono")]
+use chrono::NaiveDateTime;
+
+
+declare_TCFType!{
+    /// A date.
+    CFDate, CFDateRef
+}
+impl_TCFType!(CFDate, CFDateRef, CFDateGetTypeID);
+impl_CFTypeDescription!(CFDate);
+impl_CFComparison!(CFDate, CFDateCompare);
+
+impl CFDate {
+    #[inline]
+    pub fn new(time: CFAbsoluteTime) -> CFDate {
+        unsafe {
+            let date_ref = CFDateCreate(kCFAllocatorDefault, time);
+            TCFType::wrap_under_create_rule(date_ref)
+        }
+    }
+
+    #[inline]
+    pub fn now() -> CFDate {
+        CFDate::new(unsafe { CFAbsoluteTimeGetCurrent() })
+    }
+
+    #[inline]
+    pub fn abs_time(&self) -> CFAbsoluteTime {
+        unsafe {
+            CFDateGetAbsoluteTime(self.0)
+        }
+    }
+
+    #[cfg(feature = "with-chrono")]
+    pub fn naive_utc(&self) -> NaiveDateTime {
+        let ts = unsafe {
+            self.abs_time() + kCFAbsoluteTimeIntervalSince1970
+        };
+        let (secs, nanos) = if ts.is_sign_positive() {
+            (ts.trunc() as i64, ts.fract())
+        } else {
+            // nanoseconds can't be negative in NaiveDateTime
+            (ts.trunc() as i64 - 1, 1.0 - ts.fract().abs())
+        };
+        NaiveDateTime::from_timestamp(secs, (nanos * 1e9).floor() as u32)
+    }
+
+    #[cfg(feature = "with-chrono")]
+    pub fn from_naive_utc(time: NaiveDateTime) -> CFDate {
+        let secs = time.timestamp();
+        let nanos = time.timestamp_subsec_nanos();
+        let ts = unsafe {
+            secs as f64 + (nanos as f64 / 1e9) - kCFAbsoluteTimeIntervalSince1970
+        };
+        CFDate::new(ts)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::CFDate;
+    use std::cmp::Ordering;
+
+    #[cfg(feature = "with-chrono")]
+    use chrono::NaiveDateTime;
+
+    #[cfg(feature = "with-chrono")]
+    fn approx_eq(a: f64, b: f64) -> bool {
+        use std::f64;
+
+        let same_sign = a.is_sign_positive() == b.is_sign_positive();
+        let equal = ((a - b).abs() / f64::min(a.abs() + b.abs(), f64::MAX)) < f64::EPSILON;
+        (same_sign && equal)
+    }
+
+    #[test]
+    fn date_comparison() {
+        let now = CFDate::now();
+        let past = CFDate::new(now.abs_time() - 1.0);
+        assert_eq!(now.cmp(&past), Ordering::Greater);
+        assert_eq!(now.cmp(&now), Ordering::Equal);
+        assert_eq!(past.cmp(&now), Ordering::Less);
+    }
+
+    #[test]
+    fn date_equality() {
+        let now = CFDate::now();
+        let same_time = CFDate::new(now.abs_time());
+        assert_eq!(now, same_time);
+    }
+
+    #[test]
+    #[cfg(feature = "with-chrono")]
+    fn date_chrono_conversion_positive() {
+        let date = CFDate::now();
+        let datetime = date.naive_utc();
+        let converted = CFDate::from_naive_utc(datetime);
+        assert!(approx_eq(date.abs_time(), converted.abs_time()));
+    }
+
+    #[test]
+    #[cfg(feature = "with-chrono")]
+    fn date_chrono_conversion_negative() {
+        use super::kCFAbsoluteTimeIntervalSince1970;
+
+        let ts = unsafe {
+            kCFAbsoluteTimeIntervalSince1970 - 420.0
+        };
+        let date = CFDate::new(ts);
+        let datetime: NaiveDateTime = date.naive_utc();
+        let converted = CFDate::from_naive_utc(datetime);
+        assert!(approx_eq(date.abs_time(), converted.abs_time()));
+    }
+}