PropertyValueNameToEnumMapper

Struct PropertyValueNameToEnumMapper 

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pub struct PropertyValueNameToEnumMapper<T> { /* private fields */ }
Expand description

A struct capable of looking up a property value from a string name. Access its data by calling Self::as_borrowed() and using the methods on PropertyValueNameToEnumMapperBorrowed.

The name can be a short name (Lu), a long name(Uppercase_Letter), or an alias.

Property names can be looked up using “strict” matching (looking for a name that matches exactly), or “loose matching”, where the name is allowed to deviate in terms of ASCII casing, whitespace, underscores, and hyphens.

§Example

use icu::properties::GeneralCategory;

let lookup = GeneralCategory::name_to_enum_mapper();
// short name for value
assert_eq!(
    lookup.get_strict("Lu"),
    Some(GeneralCategory::UppercaseLetter)
);
assert_eq!(
    lookup.get_strict("Pd"),
    Some(GeneralCategory::DashPunctuation)
);
// long name for value
assert_eq!(
    lookup.get_strict("Uppercase_Letter"),
    Some(GeneralCategory::UppercaseLetter)
);
assert_eq!(
    lookup.get_strict("Dash_Punctuation"),
    Some(GeneralCategory::DashPunctuation)
);
// name has incorrect casing
assert_eq!(lookup.get_strict("dashpunctuation"), None);
// loose matching of name
assert_eq!(
    lookup.get_loose("dash-punctuation"),
    Some(GeneralCategory::DashPunctuation)
);
// fake property
assert_eq!(lookup.get_strict("Animated_Gif"), None);

Implementations§

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impl<T: TrieValue> PropertyValueNameToEnumMapper<T>

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pub fn as_borrowed(&self) -> PropertyValueNameToEnumMapperBorrowed<'_, T>

Construct a borrowed version of this type that can be queried.

This avoids a potential small underlying cost per API call (like get_strict()) by consolidating it up front.

Trait Implementations§

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impl<T: Debug> Debug for PropertyValueNameToEnumMapper<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 56 bytes