pub struct MapField<K, V, EK, EV>(/* private fields */);
Expand description
A field encoder for maps from K
to V
, using encoders EK
and EV
.
Trait Implementations§
source§impl<T, K, V, EK, EV> DescribeField<T> for MapField<K, V, EK, EV>where
EK: DescribeField<K>,
EV: DescribeField<V>,
impl<T, K, V, EK, EV> DescribeField<T> for MapField<K, V, EK, EV>where
EK: DescribeField<K>,
EV: DescribeField<V>,
source§const FIELD_TYPE: FieldType<'static> = _
const FIELD_TYPE: FieldType<'static> = _
The type of the field.
source§const PACKED_TYPE: Option<&'static str> = None
const PACKED_TYPE: Option<&'static str> = None
The type name of the field in a packed context.
source§impl<'a, K, V, T, EK, EV, R> FieldDecode<'a, T, R> for MapField<K, V, EK, EV>
impl<'a, K, V, T, EK, EV, R> FieldDecode<'a, T, R> for MapField<K, V, EK, EV>
source§fn read_field(
item: &mut InplaceOption<'_, T>,
reader: FieldReader<'a, '_, R>,
) -> Result<(), Error>
fn read_field( item: &mut InplaceOption<'_, T>, reader: FieldReader<'a, '_, R>, ) -> Result<(), Error>
Reads a field into
item
.source§fn default_field(item: &mut InplaceOption<'_, T>) -> Result<(), Error>
fn default_field(item: &mut InplaceOption<'_, T>) -> Result<(), Error>
Instantiates
item
with its default value, if there is one. Read moresource§fn wrap_in_sequence() -> bool
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).
source§fn packed<'p, C>() -> Option<&'p dyn PackedDecode<'a, T, C>>where
C: CopyExtend<T>,
T: 'p,
fn packed<'p, C>() -> Option<&'p dyn PackedDecode<'a, T, C>>where
C: CopyExtend<T>,
T: 'p,
Unless
packed()::must_pack()
is true, the sequence decoder must detect
the encoding (packed or not) and call the appropriate method.source§fn read_field_in_sequence(
item: &mut InplaceOption<'_, T>,
reader: FieldReader<'a, '_, R>,
) -> Result<(), Error>
fn read_field_in_sequence( item: &mut InplaceOption<'_, T>, reader: FieldReader<'a, '_, R>, ) -> Result<(), Error>
Reads this field that was encoded as part of a sequence, unwrapping it
from a message if necessary.
source§const ENTRY: DecoderEntry<'a, T, R> = _
const ENTRY: DecoderEntry<'a, T, R> = _
The table decoder entry for this type, used in types from
table::decode
. Read moresource§impl<K, V, T, EK, EV, R> FieldEncode<T, R> for MapField<K, V, EK, EV>where
T: IntoIterator<Item = (K, V)>,
&'a mut T: for<'a> IntoIterator<Item = (&'a K, &'a mut V)>,
EK: for<'a> FieldEncode<&'a K, R>,
EV: FieldEncode<V, R>,
impl<K, V, T, EK, EV, R> FieldEncode<T, R> for MapField<K, V, EK, EV>where
T: IntoIterator<Item = (K, V)>,
&'a mut T: for<'a> IntoIterator<Item = (&'a K, &'a mut V)>,
EK: for<'a> FieldEncode<&'a K, R>,
EV: FieldEncode<V, R>,
source§fn write_field(item: T, writer: FieldWriter<'_, '_, R>)
fn write_field(item: T, writer: FieldWriter<'_, '_, R>)
Writes
item
as a field.source§fn compute_field_size(item: &mut T, sizer: FieldSizer<'_>)
fn compute_field_size(item: &mut T, sizer: FieldSizer<'_>)
Computes the size of
item
as a field. Read moresource§fn wrap_in_sequence() -> bool
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
source§fn packed<'a>() -> Option<&'a dyn PackedEncode<T>>where
T: 'a,
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.source§fn write_field_in_sequence(item: T, writer: &mut SequenceWriter<'_, '_, R>)
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.
source§fn compute_field_size_in_sequence(item: &mut T, sizer: &mut SequenceSizer<'_>)
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.
source§const ENTRY: EncoderEntry<T, R> = _
const ENTRY: EncoderEntry<T, R> = _
The table encoder entry for this type, used in types from
table::encode
. Read moreAuto Trait Implementations§
impl<K, V, EK, EV> Freeze for MapField<K, V, EK, EV>
impl<K, V, EK, EV> RefUnwindSafe for MapField<K, V, EK, EV>where
EK: RefUnwindSafe,
EV: RefUnwindSafe,
impl<K, V, EK, EV> Send for MapField<K, V, EK, EV>
impl<K, V, EK, EV> Sync for MapField<K, V, EK, EV>
impl<K, V, EK, EV> Unpin for MapField<K, V, EK, EV>
impl<K, V, EK, EV> UnwindSafe for MapField<K, V, EK, EV>where
EK: UnwindSafe,
EV: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more