Struct mesh_protobuf::encoding::ArcEncoding

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pub struct ArcEncoding<E>(/* private fields */);
Expand description

A wrapper encoding for reference-counted data.

If the Arc<T> is the sole owner of T, then T is serialized as-is. If there are other references, then the T is first cloned so that there is a single instance.

Messages and fields are handled as if they are not reference counted, except that they are never encoded in packed format.

Trait Implementations§

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impl<E: DescribeField<T>, T> DescribeField<T> for ArcEncoding<E>

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const FIELD_TYPE: FieldType<'static> = E::FIELD_TYPE

The type of the field.
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const PACKED_TYPE: Option<&'static str> = None

The type name of the field in a packed context.
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impl<E: DescribeMessage<T>, T> DescribeMessage<T> for ArcEncoding<E>

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const DESCRIPTION: MessageDescription<'static> = E::DESCRIPTION

The message description.
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impl<'a, T: Clone, R, E: FieldDecode<'a, T, R>> FieldDecode<'a, Arc<T>, R> for ArcEncoding<E>

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fn read_field( item: &mut InplaceOption<'_, Arc<T>>, reader: FieldReader<'a, '_, R>, ) -> Result<()>

Reads a field into item.
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fn default_field(item: &mut InplaceOption<'_, Arc<T>>) -> Result<()>

Instantiates item with its default value, if there is one. Read more
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fn wrap_in_sequence() -> bool

Returns whether this field is wrapped in a message when encoded nested in a sequence (such as a repeated field).
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fn packed<'p, C: CopyExtend<T>>() -> Option<&'p dyn PackedDecode<'a, T, C>>
where T: 'p,

Unless packed()::must_pack() is true, the sequence decoder must detect the encoding (packed or not) and call the appropriate method.
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fn read_field_in_sequence( item: &mut InplaceOption<'_, T>, reader: FieldReader<'a, '_, R>, ) -> Result<()>

Reads this field that was encoded as part of a sequence, unwrapping it from a message if necessary.
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const ENTRY: DecoderEntry<'a, T, R> = _

The table decoder entry for this type, used in types from table::decode. Read more
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impl<T: Clone, R, E: FieldEncode<T, R>> FieldEncode<Arc<T>, R> for ArcEncoding<E>

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fn write_field(item: Arc<T>, writer: FieldWriter<'_, '_, R>)

Writes item as a field.
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fn compute_field_size(item: &mut Arc<T>, sizer: FieldSizer<'_>)

Computes the size of item as a field. Read more
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fn wrap_in_sequence() -> bool

Returns whether this field should be wrapped in a message when encoded nested in a sequence (such as a repeated field). Read more
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fn packed<'a>() -> Option<&'a dyn PackedEncode<T>>
where T: 'a,

Returns the encoder for writing multiple instances of this field in a packed list, or None if there is no packed encoding for this type.
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fn write_field_in_sequence(item: T, writer: &mut SequenceWriter<'_, '_, R>)

Writes this field as part of a sequence, wrapping it in a message if necessary.
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fn compute_field_size_in_sequence(item: &mut T, sizer: &mut SequenceSizer<'_>)

Computes the size of this field as part of a sequence, including the size of a wrapping message.
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const ENTRY: EncoderEntry<T, R> = _

The table encoder entry for this type, used in types from table::encode. Read more
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impl<'a, T: Clone, R, E: MessageDecode<'a, T, R>> MessageDecode<'a, Arc<T>, R> for ArcEncoding<E>

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fn read_message( item: &mut InplaceOption<'_, Arc<T>>, reader: MessageReader<'a, '_, R>, ) -> Result<()>

Reads a message into item.
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impl<T: Clone, R, E: MessageEncode<T, R>> MessageEncode<Arc<T>, R> for ArcEncoding<E>

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fn write_message(item: Arc<T>, writer: MessageWriter<'_, '_, R>)

Writes item as a message.
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fn compute_message_size(item: &mut Arc<T>, sizer: MessageSizer<'_>)

Computes the size of item as a message. Read more

Auto Trait Implementations§

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impl<E> Freeze for ArcEncoding<E>
where E: Freeze,

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impl<E> RefUnwindSafe for ArcEncoding<E>
where E: RefUnwindSafe,

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impl<E> Send for ArcEncoding<E>
where E: Send,

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impl<E> Sync for ArcEncoding<E>
where E: Sync,

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impl<E> Unpin for ArcEncoding<E>
where E: Unpin,

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impl<E> UnwindSafe for ArcEncoding<E>
where E: UnwindSafe,

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, U> Upcast<U> for T
where U: Downcast<T>,