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use proc_macro::{Ident, Span, TokenStream};
use crate::format_description::error::InvalidFormatDescription;
use crate::format_description::modifier;
use crate::format_description::modifier::Modifiers;
use crate::to_tokens::ToTokenStream;
pub(crate) enum Component {
Day(modifier::Day),
Month(modifier::Month),
Ordinal(modifier::Ordinal),
Weekday(modifier::Weekday),
WeekNumber(modifier::WeekNumber),
Year(modifier::Year),
Hour(modifier::Hour),
Minute(modifier::Minute),
Period(modifier::Period),
Second(modifier::Second),
Subsecond(modifier::Subsecond),
OffsetHour(modifier::OffsetHour),
OffsetMinute(modifier::OffsetMinute),
OffsetSecond(modifier::OffsetSecond),
}
impl ToTokenStream for Component {
fn append_to(self, ts: &mut TokenStream) {
let mut mts = TokenStream::new();
macro_rules! component_name_and_append {
($($name:ident)*) => {
match self {
$(Self::$name(modifier) => {
modifier.append_to(&mut mts);
stringify!($name)
})*
}
};
}
let component = component_name_and_append![
Day
Month
Ordinal
Weekday
WeekNumber
Year
Hour
Minute
Period
Second
Subsecond
OffsetHour
OffsetMinute
OffsetSecond
];
let component = Ident::new(component, Span::mixed_site());
quote_append! { ts
::time::format_description::Component::#(component)(#S(mts))
}
}
}
pub(crate) enum NakedComponent {
Day,
Month,
Ordinal,
Weekday,
WeekNumber,
Year,
Hour,
Minute,
Period,
Second,
Subsecond,
OffsetHour,
OffsetMinute,
OffsetSecond,
}
impl NakedComponent {
pub(crate) fn parse(
component_name: &[u8],
component_index: usize,
) -> Result<Self, InvalidFormatDescription> {
match component_name {
b"day" => Ok(Self::Day),
b"month" => Ok(Self::Month),
b"ordinal" => Ok(Self::Ordinal),
b"weekday" => Ok(Self::Weekday),
b"week_number" => Ok(Self::WeekNumber),
b"year" => Ok(Self::Year),
b"hour" => Ok(Self::Hour),
b"minute" => Ok(Self::Minute),
b"period" => Ok(Self::Period),
b"second" => Ok(Self::Second),
b"subsecond" => Ok(Self::Subsecond),
b"offset_hour" => Ok(Self::OffsetHour),
b"offset_minute" => Ok(Self::OffsetMinute),
b"offset_second" => Ok(Self::OffsetSecond),
b"" => Err(InvalidFormatDescription::MissingComponentName {
index: component_index,
}),
_ => Err(InvalidFormatDescription::InvalidComponentName {
name: String::from_utf8_lossy(component_name).into_owned(),
index: component_index,
}),
}
}
pub(crate) fn attach_modifiers(self, modifiers: Modifiers) -> Component {
match self {
Self::Day => Component::Day(modifier::Day {
padding: modifiers.padding.unwrap_or_default(),
}),
Self::Month => Component::Month(modifier::Month {
padding: modifiers.padding.unwrap_or_default(),
repr: modifiers.month_repr.unwrap_or_default(),
case_sensitive: modifiers.case_sensitive.unwrap_or(true),
}),
Self::Ordinal => Component::Ordinal(modifier::Ordinal {
padding: modifiers.padding.unwrap_or_default(),
}),
Self::Weekday => Component::Weekday(modifier::Weekday {
repr: modifiers.weekday_repr.unwrap_or_default(),
one_indexed: modifiers.weekday_is_one_indexed.unwrap_or(true),
case_sensitive: modifiers.case_sensitive.unwrap_or(true),
}),
Self::WeekNumber => Component::WeekNumber(modifier::WeekNumber {
padding: modifiers.padding.unwrap_or_default(),
repr: modifiers.week_number_repr.unwrap_or_default(),
}),
Self::Year => Component::Year(modifier::Year {
padding: modifiers.padding.unwrap_or_default(),
repr: modifiers.year_repr.unwrap_or_default(),
iso_week_based: modifiers.year_is_iso_week_based.unwrap_or_default(),
sign_is_mandatory: modifiers.sign_is_mandatory.unwrap_or_default(),
}),
Self::Hour => Component::Hour(modifier::Hour {
padding: modifiers.padding.unwrap_or_default(),
is_12_hour_clock: modifiers.hour_is_12_hour_clock.unwrap_or_default(),
}),
Self::Minute => Component::Minute(modifier::Minute {
padding: modifiers.padding.unwrap_or_default(),
}),
Self::Period => Component::Period(modifier::Period {
is_uppercase: modifiers.period_is_uppercase.unwrap_or(true),
case_sensitive: modifiers.case_sensitive.unwrap_or(true),
}),
Self::Second => Component::Second(modifier::Second {
padding: modifiers.padding.unwrap_or_default(),
}),
Self::Subsecond => Component::Subsecond(modifier::Subsecond {
digits: modifiers.subsecond_digits.unwrap_or_default(),
}),
Self::OffsetHour => Component::OffsetHour(modifier::OffsetHour {
sign_is_mandatory: modifiers.sign_is_mandatory.unwrap_or_default(),
padding: modifiers.padding.unwrap_or_default(),
}),
Self::OffsetMinute => Component::OffsetMinute(modifier::OffsetMinute {
padding: modifiers.padding.unwrap_or_default(),
}),
Self::OffsetSecond => Component::OffsetSecond(modifier::OffsetSecond {
padding: modifiers.padding.unwrap_or_default(),
}),
}
}
}
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