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//! Japanese (`ja`): the bare-tag alias of [`ja_jp`](crate::ja_jp).
//!
//! `ja` resolves to `ja-JP`, currently the only Japanese variant the crate
//! implements. This entry point exists so the bare tag works without a region
//! subtag; it is not a claim that `ja-JP` speaks for every Japanese-speaking
//! region. Cardinal and ordinal are `ja_jp`'s own functions. Currency is the
//! one form a bare tag can't forward untouched: a language has no country to
//! take a default currency from, so [`to_currency`] takes the currency
//! explicitly.
//!
//! ```
//! use n2words::{ja, Currency};
//!
//! assert_eq!(ja::to_cardinal(42)?, "四十二");
//! assert_eq!(ja::to_currency(10000, Currency::JPY)?, "一万円");
//! # Ok::<(), n2words::Error>(())
//! ```
use crate::Result;
use crate::currency::Currency;
use crate::currency::vocab::JA as CURRENCY_VOCAB;
use crate::ja_jp;
use crate::language::{Kind, Language, form};
use crate::number::Number;
use crate::options::options;
pub use crate::ja_jp::{CARDINAL_MAX, CURRENCY_MAX, ORDINAL_MAX, to_cardinal, to_ordinal};
/// The variant this alias resolves to.
pub const ALIAS_OF: &str = "ja-JP";
options! {
/// Options for [`to_currency_with`]: `ja_jp`'s, with `currency` required.
pub struct CurrencyOptions {
required
/// ISO 4217 currency code to name the amount in
currency: Currency, table = CURRENCY_VOCAB;
}
}
/// Spells an amount in the given currency, with Japanese's wording.
///
/// # Errors
///
/// As [`ja_jp::to_currency_with`].
pub fn to_currency<'a>(value: impl Into<Number<'a>>, currency: Currency) -> Result<String> {
to_currency_with(value, &CurrencyOptions::new(currency))
}
/// Spells an amount in the given currency, with options.
///
/// ```
/// # use n2words::{ja::{to_currency_with, CurrencyOptions}, Currency};
/// let opts = CurrencyOptions::new(Currency::JPY);
/// assert_eq!(to_currency_with(-1000, &opts)?, "マイナス千円");
/// # Ok::<(), n2words::Error>(())
/// ```
///
/// # Errors
///
/// As [`ja_jp::to_currency_with`].
pub fn to_currency_with<'a>(
value: impl Into<Number<'a>>,
options: &CurrencyOptions,
) -> Result<String> {
ja_jp::to_currency_with(
value,
&ja_jp::CurrencyOptions {
currency: options.currency,
},
)
}
/// Registry entry for `ja`.
pub static LANGUAGE: Language = Language {
code: "ja",
name: "Japanese",
kind: Kind::Alias { target: ALIAS_OF },
cardinal: Some(form!(plain to_cardinal, CARDINAL_MAX)),
ordinal: Some(form!(plain to_ordinal, ORDINAL_MAX)),
currency: Some(form!(with_options to_currency_with, CurrencyOptions, CURRENCY_MAX)),
};