1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
//! Data types for working with `rusqlite`.
use rusqlite;
use rusqlite::types::{ToSql, ToSqlOutput, FromSql, FromSqlResult, ValueRef};
use std::fmt;
use std::ops::{Add, Sub};
use time::{Timespec, Duration, now_utc};
/// Represents a row id.
///
/// This is used to represent handles to stored objects.
#[derive(Copy, Clone, PartialEq)]
pub struct ID(i64);
impl fmt::Display for ID {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.0)
}
}
impl ID {
/// Returns ID(0).
///
/// This is smaller than all valid ids.
pub fn null() -> Self {
ID(0)
}
/// Returns the largest id.
pub fn max() -> Self {
ID(::std::i64::MAX)
}
}
impl From<i64> for ID {
fn from(id: i64) -> Self {
ID(id)
}
}
impl ToSql for ID {
fn to_sql(&self) -> rusqlite::Result<ToSqlOutput> {
Ok(ToSqlOutput::from(self.0))
}
}
impl FromSql for ID {
fn column_result(value: ValueRef) -> FromSqlResult<Self> {
value.as_i64().map(|id| id.into())
}
}
/// A serializable system time.
#[derive(Clone, Copy, PartialEq, PartialOrd)]
pub struct Timestamp(Timespec);
impl Timestamp {
pub fn now() -> Self {
Timestamp(now_utc().to_timespec())
}
/// Converts to unix time.
pub fn unix(&self) -> i64 {
self.0.sec
}
}
impl ToSql for Timestamp {
fn to_sql(&self) -> rusqlite::Result<ToSqlOutput> {
Ok(ToSqlOutput::from(self.0.sec))
}
}
impl FromSql for Timestamp {
fn column_result(value: ValueRef) -> FromSqlResult<Self> {
value.as_i64().map(|t| Timestamp(Timespec::new(t, 0)))
}
}
impl Add<Duration> for Timestamp {
type Output = Timestamp;
fn add(self, other: Duration) -> Timestamp {
Timestamp(self.0 + other)
}
}
impl Sub<Timestamp> for Timestamp {
type Output = Duration;
fn sub(self, other: Self) -> Self::Output {
self.0 - other.0
}
}
|
