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
use chrono::{Local, NaiveDate, TimeZone};
use std::str::FromStr;
#[derive(Debug, PartialEq)]
pub struct Seq {
inner: u16,
}
#[derive(Debug, PartialEq)]
pub enum InvalidSeq {
StrParseError,
Overflow(u16),
}
impl FromStr for Seq {
type Err = InvalidSeq;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let seq = s.parse::<u16>().map_err(|_| InvalidSeq::StrParseError)?;
if seq > 999 {
return Err(InvalidSeq::Overflow(seq));
}
Ok(Seq { inner: seq })
}
}
pub enum Sex {
Male,
Female,
}
#[derive(Debug, PartialEq)]
pub struct Date {
inner: NaiveDate,
}
#[derive(Debug, PartialEq)]
pub enum InvalidDate {
StrParseError,
TooOldDate,
UncomeDate,
}
impl FromStr for Date {
type Err = InvalidDate;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let inner =
NaiveDate::parse_from_str(s, "%Y%m%d").map_err(|_| InvalidDate::StrParseError)?;
if inner < Local.ymd(1900, 1, 1).naive_local() {
return Err(InvalidDate::TooOldDate);
}
if inner > Local::today().naive_local() {
return Err(InvalidDate::UncomeDate);
}
Ok(Date { inner })
}
}