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Match on tuples in format_fixed
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@pitdicker
pitdicker committed Apr 6, 2024
1 parent f3d76c7 commit 78e79db
Showing 1 changed file with 69 additions and 117 deletions.
186 changes: 69 additions & 117 deletions src/format/formatting.rs
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Expand Up @@ -162,45 +162,34 @@ impl<'a, I: Iterator<Item = B> + Clone, B: Borrow<Item<'a>>> DelayedFormat<I> {

#[cfg(feature = "alloc")]
fn format_fixed(&self, w: &mut impl Write, spec: &Fixed) -> fmt::Result {
use self::Fixed::*;
use Fixed::*;
use InternalInternal::*;

let ret = match *spec {
ShortMonthName => self.date.map(|d| {
w.write_str(short_months(self.locale)[d.month0() as usize])?;
Ok(())
}),
LongMonthName => self.date.map(|d| {
w.write_str(long_months(self.locale)[d.month0() as usize])?;
Ok(())
}),
ShortWeekdayName => self.date.map(|d| {
w.write_str(
short_weekdays(self.locale)[d.weekday().num_days_from_sunday() as usize],
)?;
Ok(())
}),
LongWeekdayName => self.date.map(|d| {
w.write_str(
long_weekdays(self.locale)[d.weekday().num_days_from_sunday() as usize],
)?;
Ok(())
}),
LowerAmPm => self.time.map(|t| {
match (spec, self.date, self.time, self.off.as_ref()) {
(ShortMonthName, Some(d), _, _) => {
w.write_str(short_months(self.locale)[d.month0() as usize])
}
(LongMonthName, Some(d), _, _) => {
w.write_str(long_months(self.locale)[d.month0() as usize])
}
(ShortWeekdayName, Some(d), _, _) => w.write_str(
short_weekdays(self.locale)[d.weekday().num_days_from_sunday() as usize],
),
(LongWeekdayName, Some(d), _, _) => {
w.write_str(long_weekdays(self.locale)[d.weekday().num_days_from_sunday() as usize])
}
(LowerAmPm, _, Some(t), _) => {
let ampm = if t.hour12().0 { am_pm(self.locale)[1] } else { am_pm(self.locale)[0] };
for c in ampm.chars().flat_map(|c| c.to_lowercase()) {
w.write_char(c)?
}
Ok(())
}),
UpperAmPm => self.time.map(|t| {
w.write_str(if t.hour12().0 {
am_pm(self.locale)[1]
} else {
am_pm(self.locale)[0]
})?;
Ok(())
}),
Nanosecond => self.time.map(|t| {
}
(UpperAmPm, _, Some(t), _) => {
let ampm = if t.hour12().0 { am_pm(self.locale)[1] } else { am_pm(self.locale)[0] };
w.write_str(ampm)
}
(Nanosecond, _, Some(t), _) => {
let nano = t.nanosecond() % 1_000_000_000;
if nano == 0 {
Ok(())
Expand All @@ -214,114 +203,77 @@ impl<'a, I: Iterator<Item = B> + Clone, B: Borrow<Item<'a>>> DelayedFormat<I> {
write!(w, "{:09}", nano)
}
}
}),
Nanosecond3 => self.time.map(|t| {
let nano = t.nanosecond() % 1_000_000_000;
}
(Nanosecond3, _, Some(t), _) => {
w.write_str(decimal_point(self.locale))?;
write!(w, "{:03}", nano / 1_000_000)
}),
Nanosecond6 => self.time.map(|t| {
let nano = t.nanosecond() % 1_000_000_000;
write!(w, "{:03}", t.nanosecond() % 1_000_000_000 / 1_000_000)
}
(Nanosecond6, _, Some(t), _) => {
w.write_str(decimal_point(self.locale))?;
write!(w, "{:06}", nano / 1_000)
}),
Nanosecond9 => self.time.map(|t| {
let nano = t.nanosecond() % 1_000_000_000;
write!(w, "{:06}", t.nanosecond() % 1_000_000_000 / 1_000)
}
(Nanosecond9, _, Some(t), _) => {
w.write_str(decimal_point(self.locale))?;
write!(w, "{:09}", nano)
}),
Internal(InternalFixed { val: InternalInternal::Nanosecond3NoDot }) => {
self.time.map(|t| {
let nano = t.nanosecond() % 1_000_000_000;
write!(w, "{:03}", nano / 1_000_000)
})
write!(w, "{:09}", t.nanosecond() % 1_000_000_000)
}
Internal(InternalFixed { val: InternalInternal::Nanosecond6NoDot }) => {
self.time.map(|t| {
let nano = t.nanosecond() % 1_000_000_000;
write!(w, "{:06}", nano / 1_000)
})
(Internal(InternalFixed { val: Nanosecond3NoDot }), _, Some(t), _) => {
write!(w, "{:03}", t.nanosecond() % 1_000_000_000 / 1_000_000)
}
Internal(InternalFixed { val: InternalInternal::Nanosecond9NoDot }) => {
self.time.map(|t| {
let nano = t.nanosecond() % 1_000_000_000;
write!(w, "{:09}", nano)
})
(Internal(InternalFixed { val: Nanosecond6NoDot }), _, Some(t), _) => {
write!(w, "{:06}", t.nanosecond() % 1_000_000_000 / 1_000)
}
TimezoneName => self.off.as_ref().map(|(name, _)| {
w.write_str(name)?;
Ok(())
}),
TimezoneOffset | TimezoneOffsetZ => self.off.as_ref().map(|&(_, off)| {
OffsetFormat {
(Internal(InternalFixed { val: Nanosecond9NoDot }), _, Some(t), _) => {
write!(w, "{:09}", t.nanosecond() % 1_000_000_000)
}
(TimezoneName, _, _, Some((tz_name, _))) => write!(w, "{}", tz_name),
(TimezoneOffset | TimezoneOffsetZ, _, _, Some((_, off))) => {
let offset_format = OffsetFormat {
precision: OffsetPrecision::Minutes,
colons: Colons::Maybe,
allow_zulu: *spec == TimezoneOffsetZ,
padding: Pad::Zero,
}
.format(w, off)
}),
TimezoneOffsetColon | TimezoneOffsetColonZ => self.off.as_ref().map(|&(_, off)| {
OffsetFormat {
};
offset_format.format(w, *off)
}
(TimezoneOffsetColon | TimezoneOffsetColonZ, _, _, Some((_, off))) => {
let offset_format = OffsetFormat {
precision: OffsetPrecision::Minutes,
colons: Colons::Colon,
allow_zulu: *spec == TimezoneOffsetColonZ,
padding: Pad::Zero,
}
.format(w, off)
}),
TimezoneOffsetDoubleColon => self.off.as_ref().map(|&(_, off)| {
OffsetFormat {
};
offset_format.format(w, *off)
}
(TimezoneOffsetDoubleColon, _, _, Some((_, off))) => {
let offset_format = OffsetFormat {
precision: OffsetPrecision::Seconds,
colons: Colons::Colon,
allow_zulu: false,
padding: Pad::Zero,
}
.format(w, off)
}),
TimezoneOffsetTripleColon => self.off.as_ref().map(|&(_, off)| {
OffsetFormat {
};
offset_format.format(w, *off)
}
(TimezoneOffsetTripleColon, _, _, Some((_, off))) => {
let offset_format = OffsetFormat {
precision: OffsetPrecision::Hours,
colons: Colons::None,
allow_zulu: false,
padding: Pad::Zero,
}
.format(w, off)
}),
Internal(InternalFixed { val: InternalInternal::TimezoneOffsetPermissive }) => {
return Err(fmt::Error);
};
offset_format.format(w, *off)
}
RFC2822 =>
// same as `%a, %d %b %Y %H:%M:%S %z`
{
if let (Some(d), Some(t), Some(&(_, off))) =
(self.date, self.time, self.off.as_ref())
{
Some(write_rfc2822(w, crate::NaiveDateTime::new(d, t), off))
} else {
None
}
}
RFC3339 =>
// same as `%Y-%m-%dT%H:%M:%S%.f%:z`
{
if let (Some(d), Some(t), Some(&(_, off))) =
(self.date, self.time, self.off.as_ref())
{
Some(write_rfc3339(
w,
crate::NaiveDateTime::new(d, t),
off.fix(),
SecondsFormat::AutoSi,
false,
))
} else {
None
}
(RFC2822, Some(d), Some(t), Some((_, off))) => {
write_rfc2822(w, crate::NaiveDateTime::new(d, t), *off)
}
};

ret.unwrap_or(Err(fmt::Error)) // insufficient arguments for given format
(RFC3339, Some(d), Some(t), Some((_, off))) => write_rfc3339(
w,
crate::NaiveDateTime::new(d, t),
*off,
SecondsFormat::AutoSi,
false,
),
_ => Err(fmt::Error), // insufficient arguments for given format
}
}
}

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