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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
#[cfg(feature = "icu_decimal")]
use alloc::borrow::{Cow, ToOwned};
#[diplomat::bridge]
pub mod ffi {
#[cfg(feature = "icu_decimal")]
use crate::errors::ffi::ICU4XError;
use alloc::boxed::Box;
use icu_provider::AnyPayload;
#[cfg(feature = "icu_decimal")]
use icu_provider::DataPayload;
#[diplomat::opaque]
/// A generic data struct to be used by ICU4X
///
/// This can be used to construct a StructDataProvider.
#[diplomat::attr(dart, disable)]
pub struct ICU4XDataStruct(#[allow(dead_code)] AnyPayload);
impl ICU4XDataStruct {
/// Construct a new DecimalSymbolsV1 data struct.
///
/// C++ users: All string arguments must be valid UTF8
#[diplomat::rust_link(icu::decimal::provider::DecimalSymbolsV1, Struct)]
#[allow(clippy::too_many_arguments)]
#[cfg(feature = "icu_decimal")]
pub fn create_decimal_symbols_v1(
plus_sign_prefix: &str,
plus_sign_suffix: &str,
minus_sign_prefix: &str,
minus_sign_suffix: &str,
decimal_separator: &str,
grouping_separator: &str,
primary_group_size: u8,
secondary_group_size: u8,
min_group_size: u8,
digits: &[char],
) -> Result<Box<ICU4XDataStruct>, ICU4XError> {
use super::str_to_cow;
use icu_decimal::provider::{
AffixesV1, DecimalSymbolsV1, DecimalSymbolsV1Marker, GroupingSizesV1,
};
let digits = if digits.len() == 10 {
let mut new_digits = ['\0'; 10];
new_digits.copy_from_slice(digits);
new_digits
} else {
return Err(ICU4XError::DataStructValidityError);
};
let plus_sign_affixes = AffixesV1 {
prefix: str_to_cow(plus_sign_prefix),
suffix: str_to_cow(plus_sign_suffix),
};
let minus_sign_affixes = AffixesV1 {
prefix: str_to_cow(minus_sign_prefix),
suffix: str_to_cow(minus_sign_suffix),
};
let grouping_sizes = GroupingSizesV1 {
primary: primary_group_size,
secondary: secondary_group_size,
min_grouping: min_group_size,
};
let symbols = DecimalSymbolsV1 {
plus_sign_affixes,
minus_sign_affixes,
decimal_separator: str_to_cow(decimal_separator),
grouping_separator: str_to_cow(grouping_separator),
grouping_sizes,
digits,
};
let payload: DataPayload<DecimalSymbolsV1Marker> = DataPayload::from_owned(symbols);
Ok(Box::new(ICU4XDataStruct(payload.wrap_into_any_payload())))
}
}
}
#[cfg(feature = "icu_decimal")]
fn str_to_cow(s: &str) -> Cow<'static, str> {
if s.is_empty() {
Cow::default()
} else {
Cow::from(s.to_owned())
}
}
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