Struct CollationMetadata

pub struct CollationMetadata {
    pub bits: u32,
}

Each non-alias collation that the data provider knows about explicitly has an data entry at least for this struct.

🚧 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.

Fields

bits: u32

See the mask constants in the impl block for the bit layout. The other bits are ignored: They could be from the future if their semantics such that old code may ignore them.

Note: At present, it’s bogus for the bit for “upper first” to be set if “case first” isn’t also set. However, the methods handle this case gracefully, so there is no need for invariant validation.

Trait Implementations

impl Bake for CollationMetadata

fn bake(&self, env: &CrateEnv) -> TokenStream

Returns a TokenStream that would evaluate to self.

impl BakeSize for CollationMetadata

fn borrows_size(&self) -> usize

Returns the size

impl Clone for CollationMetadata

fn clone(&self) -> CollationMetadata

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CollationMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CollationMetadata

fn deserialize<__D>( __deserializer: __D, ) -> Result<CollationMetadata, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl MaybeAsVarULE for CollationMetadata

type EncodedStruct = [()]

The VarULE type for this data struct, or [()] if it cannot be represented as VarULE.

impl MaybeEncodeAsVarULE for CollationMetadata

fn maybe_encode_as_varule( &self, ) -> Option<&<CollationMetadata as MaybeAsVarULE>::EncodedStruct>

Returns the MaybeAsVarULE::EncodedStruct that represents this data struct, or None if the data struct does not support this representation.

impl PartialEq for CollationMetadata

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl Serialize for CollationMetadata

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'a> Yokeable<'a> for CollationMetadata

where CollationMetadata: Sized,

type Output = CollationMetadata

This type MUST be Self with the 'static replaced with 'a, i.e. Self<'a>

fn transform(&self) -> &<CollationMetadata as Yokeable<'a>>::Output

This method must cast self between &'a Self<'static> and &'a Self<'a>.

fn transform_owned(self) -> <CollationMetadata as Yokeable<'a>>::Output

This method must cast self between Self<'static> and Self<'a>.

unsafe fn make( this: <CollationMetadata as Yokeable<'a>>::Output, ) -> CollationMetadata

This method can be used to cast away Self<'a>’s lifetime.

fn transform_mut<F>(&'a mut self, f: F)

where F: 'static + for<'b> FnOnce(&'b mut <CollationMetadata as Yokeable<'a>>::Output),

This method must cast self between &'a mut Self<'static> and &'a mut Self<'a>, and pass it to f.

impl<'zf> ZeroFrom<'zf, CollationMetadata> for CollationMetadata

fn zero_from(this: &'zf CollationMetadata) -> CollationMetadata

Clone the other C into a struct that may retain references into C.

impl Copy for CollationMetadata

impl StructuralPartialEq for CollationMetadata