icu_locale_core/preferences/extensions/unicode/keywords/
calendar.rs

1// This file is part of ICU4X. For terms of use, please see the file
2// called LICENSE at the top level of the ICU4X source tree
3// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
4
5#![allow(non_snake_case)]
6
7use crate::preferences::extensions::unicode::enum_keyword;
8
9#[non_exhaustive]
#[doc = r" Hijri Calendar sub-type"]
#[doc = r""]
#[doc =
r" The list is based on [`CLDR Calendars`](https://github.com/unicode-org/cldr/blob/main/common/bcp47/calendar.xml)"]
pub enum HijriCalendarAlgorithm {

    #[doc = r" Hijri calendar, Umm al-Qura"]
    Umalqura,

    #[doc =
    r" Hijri calendar, tabular (intercalary years \[2,5,7,10,13,16,18,21,24,26,29] - astronomical epoch)"]
    Tbla,

    #[doc =
    r" Hijri calendar, tabular (intercalary years \[2,5,7,10,13,16,18,21,24,26,29] - civil epoch)"]
    Civil,

    #[doc = r" Hijri calendar, Saudi Arabia sighting"]
    Rgsa,
}
#[automatically_derived]
impl ::core::fmt::Debug for HijriCalendarAlgorithm {
    #[inline]
    fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
        ::core::fmt::Formatter::write_str(f,
            match self {
                HijriCalendarAlgorithm::Umalqura => "Umalqura",
                HijriCalendarAlgorithm::Tbla => "Tbla",
                HijriCalendarAlgorithm::Civil => "Civil",
                HijriCalendarAlgorithm::Rgsa => "Rgsa",
            })
    }
}
#[automatically_derived]
#[doc(hidden)]
unsafe impl ::core::clone::TrivialClone for HijriCalendarAlgorithm { }
#[automatically_derived]
impl ::core::clone::Clone for HijriCalendarAlgorithm {
    #[inline]
    fn clone(&self) -> HijriCalendarAlgorithm { *self }
}
#[automatically_derived]
impl ::core::cmp::Eq for HijriCalendarAlgorithm {
    #[inline]
    #[doc(hidden)]
    #[coverage(off)]
    fn assert_receiver_is_total_eq(&self) -> () {}
}
#[automatically_derived]
impl ::core::marker::StructuralPartialEq for HijriCalendarAlgorithm { }
#[automatically_derived]
impl ::core::cmp::PartialEq for HijriCalendarAlgorithm {
    #[inline]
    fn eq(&self, other: &HijriCalendarAlgorithm) -> bool {
        let __self_discr = ::core::intrinsics::discriminant_value(self);
        let __arg1_discr = ::core::intrinsics::discriminant_value(other);
        __self_discr == __arg1_discr
    }
}
#[automatically_derived]
impl ::core::marker::Copy for HijriCalendarAlgorithm { }
#[automatically_derived]
impl ::core::hash::Hash for HijriCalendarAlgorithm {
    #[inline]
    fn hash<__H: ::core::hash::Hasher>(&self, state: &mut __H) -> () {
        let __self_discr = ::core::intrinsics::discriminant_value(self);
        ::core::hash::Hash::hash(&__self_discr, state)
    }
}enum_keyword!(
10    /// Hijri Calendar sub-type
11    ///
12    /// The list is based on [`CLDR Calendars`](https://github.com/unicode-org/cldr/blob/main/common/bcp47/calendar.xml)
13    HijriCalendarAlgorithm {
14        /// Hijri calendar, Umm al-Qura
15        Umalqura,
16        /// Hijri calendar, tabular (intercalary years \[2,5,7,10,13,16,18,21,24,26,29] - astronomical epoch)
17        Tbla,
18        /// Hijri calendar, tabular (intercalary years \[2,5,7,10,13,16,18,21,24,26,29] - civil epoch)
19        Civil,
20        /// Hijri calendar, Saudi Arabia sighting
21        Rgsa
22});
23
24#[non_exhaustive]
#[doc = r" A Unicode Calendar Identifier defines a type of calendar."]
#[doc = r""]
#[doc =
r" This selects calendar-specific data within a locale used for formatting and parsing,"]
#[doc =
r" such as date/time symbols and patterns; it also selects supplemental calendarData used"]
#[doc =
r" for calendrical calculations. The value can affect the computation of the first day of the week."]
#[doc = r""]
#[doc =
r" The valid values are listed in [LDML](https://unicode.org/reports/tr35/#UnicodeCalendarIdentifier)."]
pub enum CalendarAlgorithm {

    #[doc =
    r" Thai Buddhist calendar (same as Gregorian except for the year)"]
    Buddhist,

    #[doc = r" Traditional Chinese calendar"]
    Chinese,

    #[doc = r" Coptic calendar"]
    Coptic,

    #[doc = r" Traditional Korean calendar"]
    Dangi,

    #[doc = r" Ethiopic calendar, Amete Alem (epoch approx. 5493 B.C.E)"]
    Ethioaa,

    #[doc = r" Ethiopic calendar, Amete Mihret (epoch approx, 8 C.E.)"]
    Ethiopic,

    #[doc = r" Gregorian calendar"]
    Gregory,

    #[doc = r" Traditional Hebrew calendar"]
    Hebrew,

    #[doc = r" Indian calendar"]
    Indian,

    #[doc = r" Hijri calendar"]
    Hijri(Option<HijriCalendarAlgorithm>),

    #[doc =
    r" ISO calendar (Gregorian calendar using the ISO 8601 calendar week rules)"]
    Iso8601,

    #[doc = r" Japanese Imperial calendar"]
    Japanese,

    #[doc = r" Persian calendar"]
    Persian,

    #[doc = r" Republic of China calendar"]
    Roc,
}
#[automatically_derived]
impl ::core::fmt::Debug for CalendarAlgorithm {
    #[inline]
    fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
        match self {
            CalendarAlgorithm::Buddhist =>
                ::core::fmt::Formatter::write_str(f, "Buddhist"),
            CalendarAlgorithm::Chinese =>
                ::core::fmt::Formatter::write_str(f, "Chinese"),
            CalendarAlgorithm::Coptic =>
                ::core::fmt::Formatter::write_str(f, "Coptic"),
            CalendarAlgorithm::Dangi =>
                ::core::fmt::Formatter::write_str(f, "Dangi"),
            CalendarAlgorithm::Ethioaa =>
                ::core::fmt::Formatter::write_str(f, "Ethioaa"),
            CalendarAlgorithm::Ethiopic =>
                ::core::fmt::Formatter::write_str(f, "Ethiopic"),
            CalendarAlgorithm::Gregory =>
                ::core::fmt::Formatter::write_str(f, "Gregory"),
            CalendarAlgorithm::Hebrew =>
                ::core::fmt::Formatter::write_str(f, "Hebrew"),
            CalendarAlgorithm::Indian =>
                ::core::fmt::Formatter::write_str(f, "Indian"),
            CalendarAlgorithm::Hijri(__self_0) =>
                ::core::fmt::Formatter::debug_tuple_field1_finish(f, "Hijri",
                    &__self_0),
            CalendarAlgorithm::Iso8601 =>
                ::core::fmt::Formatter::write_str(f, "Iso8601"),
            CalendarAlgorithm::Japanese =>
                ::core::fmt::Formatter::write_str(f, "Japanese"),
            CalendarAlgorithm::Persian =>
                ::core::fmt::Formatter::write_str(f, "Persian"),
            CalendarAlgorithm::Roc =>
                ::core::fmt::Formatter::write_str(f, "Roc"),
        }
    }
}
#[automatically_derived]
#[doc(hidden)]
unsafe impl ::core::clone::TrivialClone for CalendarAlgorithm { }
#[automatically_derived]
impl ::core::clone::Clone for CalendarAlgorithm {
    #[inline]
    fn clone(&self) -> CalendarAlgorithm {
        let _:
                ::core::clone::AssertParamIsClone<Option<HijriCalendarAlgorithm>>;
        *self
    }
}
#[automatically_derived]
impl ::core::cmp::Eq for CalendarAlgorithm {
    #[inline]
    #[doc(hidden)]
    #[coverage(off)]
    fn assert_receiver_is_total_eq(&self) -> () {
        let _: ::core::cmp::AssertParamIsEq<Option<HijriCalendarAlgorithm>>;
    }
}
#[automatically_derived]
impl ::core::marker::StructuralPartialEq for CalendarAlgorithm { }
#[automatically_derived]
impl ::core::cmp::PartialEq for CalendarAlgorithm {
    #[inline]
    fn eq(&self, other: &CalendarAlgorithm) -> bool {
        let __self_discr = ::core::intrinsics::discriminant_value(self);
        let __arg1_discr = ::core::intrinsics::discriminant_value(other);
        __self_discr == __arg1_discr &&
            match (self, other) {
                (CalendarAlgorithm::Hijri(__self_0),
                    CalendarAlgorithm::Hijri(__arg1_0)) => __self_0 == __arg1_0,
                _ => true,
            }
    }
}
#[automatically_derived]
impl ::core::marker::Copy for CalendarAlgorithm { }
#[automatically_derived]
impl ::core::hash::Hash for CalendarAlgorithm {
    #[inline]
    fn hash<__H: ::core::hash::Hasher>(&self, state: &mut __H) -> () {
        let __self_discr = ::core::intrinsics::discriminant_value(self);
        ::core::hash::Hash::hash(&__self_discr, state);
        match self {
            CalendarAlgorithm::Hijri(__self_0) =>
                ::core::hash::Hash::hash(__self_0, state),
            _ => {}
        }
    }
}
impl crate::preferences::PreferenceKey for CalendarAlgorithm {
    fn unicode_extension_key() -> Option<crate::extensions::unicode::Key> {
        Some(const {
                    use crate::extensions::unicode::Key;
                    match Key::try_from_utf8("ca".as_bytes()) {
                        Ok(r) => r,
                        _ => {
                            ::core::panicking::panic_fmt(format_args!("Invalid extensions::unicode::Key: ca"));
                        }
                    }
                })
    }
    fn try_from_key_value(key: &crate::extensions::unicode::Key,
        value: &crate::extensions::unicode::Value)
        ->
            Result<Option<Self>,
            crate::preferences::extensions::unicode::errors::PreferencesParseError> {
        if Self::unicode_extension_key() == Some(*key) {
            Self::try_from(value).map(Some)
        } else { Ok(None) }
    }
    fn unicode_extension_value(&self)
        -> Option<crate::extensions::unicode::Value> {
        Some((*self).into())
    }
}
impl TryFrom<&crate::extensions::unicode::Value> for CalendarAlgorithm {
    type Error =
        crate::preferences::extensions::unicode::errors::PreferencesParseError;
    fn try_from(s: &crate::extensions::unicode::Value)
        -> Result<Self, Self::Error> {
        let subtag =
            s.get_subtag(0).unwrap_or(&const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("true".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: true"));
                                }
                            }
                        });
        #[allow(unused_imports)]
        use crate::extensions::unicode::value;
        let s = s;
        if *s ==
                const {
                        crate::extensions::unicode::Value::from_subtag(match crate::subtags::Subtag::try_from_utf8("islamicc".as_bytes())
                                {
                                Ok(r) => Some(r),
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid Unicode extension value: islamicc"));
                                }
                            })
                    } {
            return Ok(Self::Hijri(Some(HijriCalendarAlgorithm::Civil)));
        }
        Ok(match subtag.as_str() {
                "buddhist" => { CalendarAlgorithm::Buddhist }
                "chinese" => { CalendarAlgorithm::Chinese }
                "coptic" => { CalendarAlgorithm::Coptic }
                "dangi" => { CalendarAlgorithm::Dangi }
                "ethioaa" => { CalendarAlgorithm::Ethioaa }
                "ethiopic" => { CalendarAlgorithm::Ethiopic }
                "gregory" => { CalendarAlgorithm::Gregory }
                "hebrew" => { CalendarAlgorithm::Hebrew }
                "indian" => { CalendarAlgorithm::Indian }
                "islamic" => {
                    {
                        let sv =
                            s.get_subtag(1).and_then(|st|
                                    {
                                        match st.as_str() {
                                            "umalqura" => Some(HijriCalendarAlgorithm::Umalqura),
                                            "tbla" => Some(HijriCalendarAlgorithm::Tbla),
                                            "civil" => Some(HijriCalendarAlgorithm::Civil),
                                            "rgsa" => Some(HijriCalendarAlgorithm::Rgsa),
                                            _ => None,
                                        }
                                    });
                        CalendarAlgorithm::Hijri(sv)
                    }
                }
                "iso8601" => { CalendarAlgorithm::Iso8601 }
                "japanese" => { CalendarAlgorithm::Japanese }
                "persian" => { CalendarAlgorithm::Persian }
                "roc" => { CalendarAlgorithm::Roc }
                _ => { return Err(Self::Error::InvalidKeywordValue); }
            })
    }
}
impl From<CalendarAlgorithm> for crate::extensions::unicode::Value {
    fn from(input: CalendarAlgorithm) -> crate::extensions::unicode::Value {
        let f;
        #[allow(unused_mut)]
        let mut s = None;
        match input
            {
                #[allow(non_snake_case)]
                CalendarAlgorithm::Buddhist => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("buddhist".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: buddhist"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Chinese => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("chinese".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: chinese"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Coptic => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("coptic".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: coptic"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Dangi => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("dangi".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: dangi"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Ethioaa => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("ethioaa".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: ethioaa"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Ethiopic => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("ethiopic".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: ethiopic"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Gregory => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("gregory".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: gregory"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Hebrew => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("hebrew".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: hebrew"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Indian => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("indian".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: indian"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Hijri(HijriCalendarAlgorithm) => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("islamic".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: islamic"));
                                }
                            }
                        };
                if let Some(v2) = HijriCalendarAlgorithm {
                    match v2 {
                        HijriCalendarAlgorithm::Umalqura =>
                            s =
                                Some(const {
                                            use crate::subtags::Subtag;
                                            match Subtag::try_from_utf8("umalqura".as_bytes()) {
                                                Ok(r) => r,
                                                _ => {
                                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: umalqura"));
                                                }
                                            }
                                        }),
                        HijriCalendarAlgorithm::Tbla =>
                            s =
                                Some(const {
                                            use crate::subtags::Subtag;
                                            match Subtag::try_from_utf8("tbla".as_bytes()) {
                                                Ok(r) => r,
                                                _ => {
                                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: tbla"));
                                                }
                                            }
                                        }),
                        HijriCalendarAlgorithm::Civil =>
                            s =
                                Some(const {
                                            use crate::subtags::Subtag;
                                            match Subtag::try_from_utf8("civil".as_bytes()) {
                                                Ok(r) => r,
                                                _ => {
                                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: civil"));
                                                }
                                            }
                                        }),
                        HijriCalendarAlgorithm::Rgsa =>
                            s =
                                Some(const {
                                            use crate::subtags::Subtag;
                                            match Subtag::try_from_utf8("rgsa".as_bytes()) {
                                                Ok(r) => r,
                                                _ => {
                                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: rgsa"));
                                                }
                                            }
                                        }),
                    }
                }
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Iso8601 => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("iso8601".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: iso8601"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Japanese => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("japanese".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: japanese"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Persian => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("persian".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: persian"));
                                }
                            }
                        };
            }
                #[allow(non_snake_case)]
                CalendarAlgorithm::Roc => {
                f =
                    const {
                            use crate::subtags::Subtag;
                            match Subtag::try_from_utf8("roc".as_bytes()) {
                                Ok(r) => r,
                                _ => {
                                    ::core::panicking::panic_fmt(format_args!("Invalid subtags::Subtag: roc"));
                                }
                            }
                        };
            }
        }
        if let Some(s) = s {
            crate::extensions::unicode::Value::from_two_subtags(f, s)
        } else { crate::extensions::unicode::Value::from_subtag(Some(f)) }
    }
}
impl CalendarAlgorithm {
    /// A helper function for displaying as a `&str`.
    pub const fn as_str(&self) -> &'static str {
        match self
            {
                #[allow(non_snake_case)]
                Self::Buddhist => {
                return "buddhist";
            }
                #[allow(non_snake_case)]
                Self::Chinese => {
                return "chinese";
            }
                #[allow(non_snake_case)]
                Self::Coptic => {
                return "coptic";
            }
                #[allow(non_snake_case)]
                Self::Dangi => {
                return "dangi";
            }
                #[allow(non_snake_case)]
                Self::Ethioaa => {
                return "ethioaa";
            }
                #[allow(non_snake_case)]
                Self::Ethiopic => {
                return "ethiopic";
            }
                #[allow(non_snake_case)]
                Self::Gregory => {
                return "gregory";
            }
                #[allow(non_snake_case)]
                Self::Hebrew => {
                return "hebrew";
            }
                #[allow(non_snake_case)]
                Self::Indian => {
                return "indian";
            }
                #[allow(non_snake_case)]
                Self::Hijri(HijriCalendarAlgorithm) => {
                if let Some(v2) = HijriCalendarAlgorithm {
                    return match v2 {
                            HijriCalendarAlgorithm::Umalqura => "islamic-umalqura",
                            HijriCalendarAlgorithm::Tbla => "islamic-tbla",
                            HijriCalendarAlgorithm::Civil => "islamic-civil",
                            HijriCalendarAlgorithm::Rgsa => "islamic-rgsa",
                        };
                }
                return "islamic";
            }
                #[allow(non_snake_case)]
                Self::Iso8601 => {
                return "iso8601";
            }
                #[allow(non_snake_case)]
                Self::Japanese => {
                return "japanese";
            }
                #[allow(non_snake_case)]
                Self::Persian => {
                return "persian";
            }
                #[allow(non_snake_case)]
                Self::Roc => {
                return "roc";
            }
        }
    }
}enum_keyword!(
25    /// A Unicode Calendar Identifier defines a type of calendar.
26    ///
27    /// This selects calendar-specific data within a locale used for formatting and parsing,
28    /// such as date/time symbols and patterns; it also selects supplemental calendarData used
29    /// for calendrical calculations. The value can affect the computation of the first day of the week.
30    ///
31    /// The valid values are listed in [LDML](https://unicode.org/reports/tr35/#UnicodeCalendarIdentifier).
32    CalendarAlgorithm {
33        /// Thai Buddhist calendar (same as Gregorian except for the year)
34        ("buddhist" => Buddhist),
35        /// Traditional Chinese calendar
36        ("chinese" => Chinese),
37        /// Coptic calendar
38        ("coptic" => Coptic),
39        /// Traditional Korean calendar
40        ("dangi" => Dangi),
41        /// Ethiopic calendar, Amete Alem (epoch approx. 5493 B.C.E)
42        ("ethioaa" => Ethioaa),
43        /// Ethiopic calendar, Amete Mihret (epoch approx, 8 C.E.)
44        ("ethiopic" => Ethiopic),
45        /// Gregorian calendar
46        ("gregory" => Gregory),
47        /// Traditional Hebrew calendar
48        ("hebrew" => Hebrew),
49        /// Indian calendar
50        ("indian" => Indian),
51        /// Hijri calendar
52        ("islamic" => Hijri(HijriCalendarAlgorithm) {
53             ("umalqura" => Umalqura),
54             ("tbla" => Tbla),
55             ("civil" => Civil),
56             ("rgsa" => Rgsa)
57        }),
58        /// ISO calendar (Gregorian calendar using the ISO 8601 calendar week rules)
59        ("iso8601" => Iso8601),
60        /// Japanese Imperial calendar
61        ("japanese" => Japanese),
62        /// Persian calendar
63        ("persian" => Persian),
64        /// Republic of China calendar
65        ("roc" => Roc)
66}, "ca", s, if *s == value!("islamicc") { return Ok(Self::Hijri(Some(HijriCalendarAlgorithm::Civil))); });