Function icu_properties::sets::load_for_ecma262

pub fn load_for_ecma262(
    name: &str
) -> Result<CodePointSetDataBorrowed<'static>, PropertiesError>

Returns a type capable of looking up values for a property specified as a string, as long as it is a binary property listed in ECMA-262, using strict matching on the names in the spec.

This handles every property required by ECMA-262 /u regular expressions, except for:

• Script and General_Category: handle these directly with maps::load_general_category() and maps::load_script(). using property values parsed via GeneralCategory::get_name_to_enum_mapper() and Script::get_name_to_enum_mapper() if necessary.
• Script_Extensions: handle this directly using APIs from crate::script, like script::load_script_with_extensions_unstable()
• General_Category mask values: Handle this alongside General_Category using GeneralCategoryGroup, using property values parsed via GeneralCategoryGroup::get_name_to_enum_mapper() if necessary
• Assigned, All, and ASCII pseudoproperties: Handle these using their equivalent sets:
  • Any can be expressed as the range [\u{0}-\u{10FFFF}]
  • Assigned can be expressed as the inverse of the set gc=Cn (i.e., \P{gc=Cn}).
  • ASCII can be expressed as the range [\u{0}-\u{7F}]
• General_Category property values can themselves be treated like properties using a shorthand in ECMA262, simply create the corresponding GeneralCategory set.

✨ Enabled with the compiled_data Cargo feature.

📚 Help choosing a constructor

use icu::properties::sets;

let emoji = sets::load_for_ecma262("Emoji").expect("loading data failed");

assert!(emoji.contains('🔥')); // U+1F525 FIRE
assert!(!emoji.contains('V'));