chinese_format/gregorian/date/pattern/
flags.rs

1use std::fmt::Display;
2
3/// Flags describing the components in a [DatePattern](super::DatePattern).
4///
5/// This data structure is used, for example, by [DatePattern::validate](super::DatePattern::validate).
6#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
7pub struct DatePatternFlags {
8    pub year: bool,
9
10    pub month: bool,
11
12    pub day: bool,
13
14    pub week_day: bool,
15}
16
17/// [DatePatternFlags] can be converted to a [String]
18/// consisting of cumulated single characters - one for each
19/// enabled date component:
20///
21/// ```
22/// use chinese_format::{*, gregorian::*};
23///
24/// # fn main() -> GenericResult<()> {
25/// assert_eq!(
26///     DatePatternFlags {
27///         year: false,
28///         month: false,
29///         day: false,
30///         week_day: false
31///     }.to_string(),
32///     ""
33/// );
34///
35/// assert_eq!(
36///     DatePatternFlags {
37///         year: true,
38///         month: true,
39///         day: true,
40///         week_day: true
41///     }.to_string(),
42///     "ymdw"
43/// );
44///
45/// # Ok(())
46/// # }
47/// ```
48impl Display for DatePatternFlags {
49    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
50        if self.year {
51            write!(f, "y")?;
52        }
53
54        if self.month {
55            write!(f, "m")?;
56        }
57
58        if self.day {
59            write!(f, "d")?;
60        }
61
62        if self.week_day {
63            write!(f, "w")?;
64        }
65
66        Ok(())
67    }
68}
chinese_format/gregorian/date/pattern/flags.rs

chinese_format/gregorian/date/pattern/
flags.rs
