Struct MapSkipError 

pub struct MapSkipError<KA = Same, VA = Same>(/* private fields */);

Skips entries of a map which cannot be deserialized.

Keys are deserialized with the adapter KA and values with VA (both Same by default). If either of them fails, the rest of the entry is skipped (see Sink::recover). Only errors of the entries are handled, errors of the data format and of layers still fail the deserialization. Supported are BTreeMap and HashMap. Serialization uses the inner adapters.

use std::collections::BTreeMap;
use deser::Deserialize;
use deser::adapters::MapSkipError;

#[derive(Deserialize, PartialEq, Eq, PartialOrd, Ord)]
pub enum Kind {
    A,
    B,
}

#[derive(Deserialize)]
pub struct Weights {
    // entries with unknown kinds are skipped
    #[deser(as = MapSkipError)]
    weights: BTreeMap<Kind, f64>,
}

Trait Implementations

impl<'de, K, V, KA, VA> Deserialize<'de, BTreeMap<K, V>> for MapSkipError<KA, VA>

where K: Ord + Send, V: Send, KA: Deserialize<'de, K>, VA: Deserialize<'de, V>,

fn deserialize_into<'out>( out: &'out mut Option<BTreeMap<K, V>>, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that deserializes the value into the given slot.

fn expecting() -> Cow<'static, str>

Returns what the value expects, for error messages.

fn deserialize_atom( slot: &mut Slot<T, Self>, atom: Atom<'_>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom into the slot.

fn deserialize_borrowed_atom( slot: &mut Slot<T, Self>, atom: Atom<'de>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom that borrows from the data being deserialized into the slot.

fn describe_type(d: &mut dyn Describe)

Describes the Rust shape of the type.

fn initial_value() -> Option<T>

Provides the value of a missing struct field.

fn deserialize_update<'out>( value: &'out mut T, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that updates an existing value.

impl<'de, K, V, H, KA, VA> Deserialize<'de, HashMap<K, V, H>> for MapSkipError<KA, VA>

where K: Hash + Eq + Send, V: Send, H: BuildHasher + Default + Send, KA: Deserialize<'de, K>, VA: Deserialize<'de, V>,

Available on crate feature std only.

fn deserialize_into<'out>( out: &'out mut Option<HashMap<K, V, H>>, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that deserializes the value into the given slot.

fn expecting() -> Cow<'static, str>

Returns what the value expects, for error messages.

fn deserialize_atom( slot: &mut Slot<T, Self>, atom: Atom<'_>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom into the slot.

fn deserialize_borrowed_atom( slot: &mut Slot<T, Self>, atom: Atom<'de>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom that borrows from the data being deserialized into the slot.

fn describe_type(d: &mut dyn Describe)

Describes the Rust shape of the type.

fn initial_value() -> Option<T>

Provides the value of a missing struct field.

fn deserialize_update<'out>( value: &'out mut T, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that updates an existing value.

impl<'de, K, V, S, KA, VA> Deserialize<'de, HashMap<K, V, S>> for MapSkipError<KA, VA>

where K: Hash + Eq + Send, V: Send, S: BuildHasher + Default + Send, KA: Deserialize<'de, K>, VA: Deserialize<'de, V>,

Available on crate feature hashbrown only.

fn deserialize_into<'out>( out: &'out mut Option<HashMap<K, V, S>>, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that deserializes the value into the given slot.

fn expecting() -> Cow<'static, str>

Returns what the value expects, for error messages.

fn deserialize_atom( slot: &mut Slot<T, Self>, atom: Atom<'_>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom into the slot.

fn deserialize_borrowed_atom( slot: &mut Slot<T, Self>, atom: Atom<'de>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom that borrows from the data being deserialized into the slot.

fn describe_type(d: &mut dyn Describe)

Describes the Rust shape of the type.

fn initial_value() -> Option<T>

Provides the value of a missing struct field.

fn deserialize_update<'out>( value: &'out mut T, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that updates an existing value.

impl<'de, K, V, S, KA, VA> Deserialize<'de, IndexMap<K, V, S>> for MapSkipError<KA, VA>

where K: Hash + Eq + Send, V: Send, S: BuildHasher + Default + Send, KA: Deserialize<'de, K>, VA: Deserialize<'de, V>,

Available on crate feature indexmap only.

fn deserialize_into<'out>( out: &'out mut Option<IndexMap<K, V, S>>, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that deserializes the value into the given slot.

fn expecting() -> Cow<'static, str>

Returns what the value expects, for error messages.

fn deserialize_atom( slot: &mut Slot<T, Self>, atom: Atom<'_>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom into the slot.

fn deserialize_borrowed_atom( slot: &mut Slot<T, Self>, atom: Atom<'de>, state: &mut State, ) -> Result<(), Error>

Deserializes an atom that borrows from the data being deserialized into the slot.

fn describe_type(d: &mut dyn Describe)

Describes the Rust shape of the type.

fn initial_value() -> Option<T>

Provides the value of a missing struct field.

fn deserialize_update<'out>( value: &'out mut T, state: &mut State, ) -> SinkHandle<'out, 'de>

Creates a sink that updates an existing value.

impl<K, V, KA, VA> Serialize<BTreeMap<K, V>> for MapSkipError<KA, VA>

where K: Sync, V: Sync, KA: Serialize<K>, VA: Serialize<V>,

fn serialize<'a>( value: &'a BTreeMap<K, V>, state: &mut State, ) -> Result<Emit<'a>, Error>

Serializes the value.

fn container_shape(value: &BTreeMap<K, V>) -> ContainerShape

Returns the shape of the value if it’s a map or sequence.

fn describe(value: &BTreeMap<K, V>, d: &mut dyn Describe)

Describes the Rust shape of the value.

fn finish(value: &T, state: &mut State) -> Result<(), Error>

Invoked after the serialization finished.

fn is_optional(value: &T) -> bool

Checks if the value represents an optional value.

impl<K, V, H, KA, VA> Serialize<HashMap<K, V, H>> for MapSkipError<KA, VA>

where K: Sync, V: Sync, H: BuildHasher + Sync, KA: Serialize<K>, VA: Serialize<V>,

Available on crate feature std only.

fn serialize<'a>( value: &'a HashMap<K, V, H>, state: &mut State, ) -> Result<Emit<'a>, Error>

Serializes the value.

fn container_shape(value: &HashMap<K, V, H>) -> ContainerShape

Returns the shape of the value if it’s a map or sequence.

fn describe(value: &HashMap<K, V, H>, d: &mut dyn Describe)

Describes the Rust shape of the value.

fn finish(value: &T, state: &mut State) -> Result<(), Error>

Invoked after the serialization finished.

fn is_optional(value: &T) -> bool

Checks if the value represents an optional value.

impl<K, V, S, KA, VA> Serialize<HashMap<K, V, S>> for MapSkipError<KA, VA>

where K: Sync, V: Sync, S: Sync, KA: Serialize<K>, VA: Serialize<V>,

Available on crate feature hashbrown only.

fn serialize<'a>( value: &'a HashMap<K, V, S>, state: &mut State, ) -> Result<Emit<'a>, Error>

Serializes the value.

fn container_shape(value: &HashMap<K, V, S>) -> ContainerShape

Returns the shape of the value if it’s a map or sequence.

fn describe(value: &HashMap<K, V, S>, d: &mut dyn Describe)

Describes the Rust shape of the value.

fn finish(value: &T, state: &mut State) -> Result<(), Error>

Invoked after the serialization finished.

fn is_optional(value: &T) -> bool

Checks if the value represents an optional value.

impl<K, V, S, KA, VA> Serialize<IndexMap<K, V, S>> for MapSkipError<KA, VA>

where K: Sync, V: Sync, S: Sync, KA: Serialize<K>, VA: Serialize<V>,

Available on crate feature indexmap only.

fn serialize<'a>( value: &'a IndexMap<K, V, S>, state: &mut State, ) -> Result<Emit<'a>, Error>

Serializes the value.

fn container_shape(value: &IndexMap<K, V, S>) -> ContainerShape

Returns the shape of the value if it’s a map or sequence.

fn describe(value: &IndexMap<K, V, S>, d: &mut dyn Describe)

Describes the Rust shape of the value.

fn finish(value: &T, state: &mut State) -> Result<(), Error>

Invoked after the serialization finished.

fn is_optional(value: &T) -> bool

Checks if the value represents an optional value.