time/interop/
timestamp_utcdatetime.rs

1use core::cmp::Ordering;
2use core::ops::Sub;
3
4use crate::{Duration, Timestamp, UtcDateTime};
5
6impl Sub<UtcDateTime> for Timestamp {
7    type Output = Duration;
8
9    #[inline]
10    fn sub(self, rhs: UtcDateTime) -> Self::Output {
11        Duration::new(
12            self.as_seconds() - rhs.unix_timestamp(),
13            self.nanosecond().cast_signed() - rhs.nanosecond().cast_signed(),
14        )
15    }
16}
17
18impl Sub<Timestamp> for UtcDateTime {
19    type Output = Duration;
20
21    #[inline]
22    fn sub(self, rhs: Timestamp) -> Self::Output {
23        Duration::new(
24            self.unix_timestamp() - rhs.as_seconds(),
25            self.nanosecond().cast_signed() - rhs.nanosecond().cast_signed(),
26        )
27    }
28}
29
30impl PartialEq<UtcDateTime> for Timestamp {
31    #[expect(clippy::suspicious_operation_groupings, reason = "false positive")]
32    #[inline]
33    fn eq(&self, other: &UtcDateTime) -> bool {
34        self.as_seconds() == other.unix_timestamp() && self.nanosecond() == other.nanosecond()
35    }
36}
37
38impl PartialEq<Timestamp> for UtcDateTime {
39    #[inline]
40    fn eq(&self, other: &Timestamp) -> bool {
41        other == self
42    }
43}
44
45impl PartialOrd<UtcDateTime> for Timestamp {
46    #[inline]
47    fn partial_cmp(&self, other: &UtcDateTime) -> Option<Ordering> {
48        (self.as_seconds(), self.nanosecond())
49            .partial_cmp(&(other.unix_timestamp(), other.nanosecond()))
50    }
51}
52
53impl PartialOrd<Timestamp> for UtcDateTime {
54    #[inline]
55    fn partial_cmp(&self, other: &Timestamp) -> Option<Ordering> {
56        other.partial_cmp(self).map(Ordering::reverse)
57    }
58}
59
60impl From<UtcDateTime> for Timestamp {
61    #[inline]
62    fn from(datetime: UtcDateTime) -> Self {
63        // Safety: The valid range of `Timestamp` and `UtcDateTime` are the same. Nanoseconds also
64        // have the same range.
65        unsafe {
66            Self::from_seconds(datetime.unix_timestamp())
67                .unwrap_unchecked()
68                .replace_nanosecond(datetime.nanosecond())
69                .unwrap_unchecked()
70        }
71    }
72}
73
74impl From<Timestamp> for UtcDateTime {
75    #[inline]
76    fn from(timestamp: Timestamp) -> Self {
77        // Safety: The valid range of `Timestamp` and `UtcDateTime` are the same. Nanoseconds also
78        // have the same range.
79        unsafe {
80            Self::from_unix_timestamp(timestamp.as_seconds())
81                .unwrap_unchecked()
82                .replace_nanosecond(timestamp.nanosecond())
83                .unwrap_unchecked()
84        }
85    }
86}
time/interop/timestamp_utcdatetime.rs

time/interop/
timestamp_utcdatetime.rs
