Struct icu::casemap::provider::data::CaseMapDataULE

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pub struct CaseMapDataULE(/* private fields */);
Expand description

Packed casemappingdata type

Data format, copied from ICU4C casepropsbuilder.cpp:

Trie data word:
Bits
if(exception) {
    15..4   unsigned exception index
} else {
    if(not uncased) {
        15..7   signed delta to simple case mapping code point
                (add delta to input code point)
    } else {
        15..7   reserved, 0
    }
     6..5   0 normal character with cc=0
            1 soft-dotted character
            2 cc=230
            3 other cc
            The runtime code relies on these two bits to be adjacent with this encoding.
}
    4   case-sensitive
    3   exception
    2   case-ignorable
 1..0   0 uncased
        1 lowercase
        2 uppercase
        3 titlecase
        The runtime code relies on the case-ignorable and case type bits 2..0
        to be the lowest bits with this encoding.
🚧 This code is considered unstable; it may change at any time, in breaking or non-breaking ways, including in SemVer minor releases. While the serde representation of data structs is guaranteed to be stable, their Rust representation might not be. Use with caution.

Trait Implementations§

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impl Clone for CaseMapDataULE

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fn clone(&self) -> CaseMapDataULE

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CaseMapDataULE

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

Formats the value using the given formatter. Read more
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impl PartialEq for CaseMapDataULE

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fn eq(&self, other: &CaseMapDataULE) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl ULE for CaseMapDataULE

§Safety

Safety checklist for ULE:

  1. The type must not include any uninitialized or padding bytes: repr(transparent) wrapper around ULE type
  2. The type must have an alignment of 1 byte: repr(transparent) wrapper around ULE type
  3. The impl of ULE::validate_bytes() must return an error if the given byte slice would not represent a valid slice of this type: It does
  4. The impl of ULE::validate_bytes() must return an error if the given byte slice cannot be used in its entirety (if its length is not a multiple of size_of::<Self>()): it does, due to the RawBytesULE parse call
  5. All other methods must be left with their default impl, or else implemented according to their respective safety guidelines: They have been
  6. The equality invariant is satisfied
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fn validate_bytes(bytes: &[u8]) -> Result<(), UleError>

Validates a byte slice, &[u8]. Read more
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fn parse_bytes_to_slice(bytes: &[u8]) -> Result<&[Self], UleError>

Parses a byte slice, &[u8], and return it as &[Self] with the same lifetime. Read more
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unsafe fn slice_from_bytes_unchecked(bytes: &[u8]) -> &[Self]

Takes a byte slice, &[u8], and return it as &[Self] with the same lifetime, assuming that this byte slice has previously been run through Self::parse_bytes_to_slice() with success. Read more
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fn slice_as_bytes(slice: &[Self]) -> &[u8]

Given &[Self], returns a &[u8] with the same lifetime. Read more
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impl Copy for CaseMapDataULE

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impl Eq for CaseMapDataULE

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impl StructuralPartialEq for CaseMapDataULE

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> GetField<T> for T
where T: Copy,

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fn get_field(&self) -> T

Returns the value of this trait’s field T.
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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
where T: Send + Sync,