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Rust编写的JavaScript引擎，该项目是一个试验性质的项目。
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boa/boa_icu_provider/data/min/props/ids_v1/mod.rs

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Optimize `String.prototype.normalize` (#2848) We currently use `unicode_normalization` to handle the `String.prototype.normalize` method. However, the crate doesn't support UTF-16 as a first class string, so we had to do some hacks by converting the valid parts of a string to UTF-8, normalizing each one, encoding back to UTF-16 and concatenating everything with the unpaired surrogates within. All of this is obviously suboptimal for performance, which is why I leveraged the `icu_normalizer`, which does support UTF-16 input, to replace our current implementation. Additionally, this allows users to override the default normalization data if the `intl` feature is enabled by providing the required data in the `BoaProvider` data provider.
2 years ago
// @generated
Implement `is_identifier_(start/part)` using `icu_properties` (#2865) As mentioned in https://github.com/boa-dev/boa/pull/2848#issuecomment-1518909512, this uses our new default ICU4X data to replace `char::is_start` and `char::is_continue` from the `boa_unicode` crate with the [`icu_properties`](https://crates.io/crates/icu_properties) crate. Note that this doesn't deprecate `boa_unicode` yet, since that'll require some discussion about how to proceed with a now unused sub-crate.
2 years ago
type DataStruct =
<::icu_properties::provider::IdStartV1Marker as ::icu_provider::DataMarker>::Yokeable;
Optimize `String.prototype.normalize` (#2848) We currently use `unicode_normalization` to handle the `String.prototype.normalize` method. However, the crate doesn't support UTF-16 as a first class string, so we had to do some hacks by converting the valid parts of a string to UTF-8, normalizing each one, encoding back to UTF-16 and concatenating everything with the unpaired surrogates within. All of this is obviously suboptimal for performance, which is why I leveraged the `icu_normalizer`, which does support UTF-16 input, to replace our current implementation. Additionally, this allows users to override the default normalization data if the `intl` feature is enabled by providing the required data in the `BoaProvider` data provider.
2 years ago
pub fn lookup(locale: &icu_provider::DataLocale) -> Option<&'static DataStruct> {
locale.is_empty().then(|| &UND)
}
static UND: DataStruct = include!("und.rs.data");