Struct hdk::prelude::holochain_serialized_bytes::serde::ser::Impossible
source · [−]pub struct Impossible<Ok, Error> { /* private fields */ }
Expand description
Helper type for implementing a Serializer
that does not support
serializing one of the compound types.
This type cannot be instantiated, but implements every one of the traits
corresponding to the Serializer
compound types: SerializeSeq
,
SerializeTuple
, SerializeTupleStruct
, SerializeTupleVariant
,
SerializeMap
, SerializeStruct
, and SerializeStructVariant
.
ⓘ
impl Serializer for MySerializer {
type Ok = ();
type Error = Error;
type SerializeSeq = Impossible<(), Error>;
/* other associated types */
/// This data format does not support serializing sequences.
fn serialize_seq(self,
len: Option<usize>)
-> Result<Self::SerializeSeq, Error> {
// Given Impossible cannot be instantiated, the only
// thing we can do here is to return an error.
Err(...)
}
/* other Serializer methods */
}
Trait Implementations
sourceimpl<Ok, Error> SerializeMap for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeMap for Impossible<Ok, Error> where
Error: Error,
type Ok = Ok
type Ok = Ok
Must match the Ok
type of our Serializer
.
type Error = Error
type Error = Error
Must match the Error
type of our Serializer
.
sourcepub fn serialize_key<T>(&mut self, key: &T) -> Result<(), Error> where
T: Serialize + ?Sized,
pub fn serialize_key<T>(&mut self, key: &T) -> Result<(), Error> where
T: Serialize + ?Sized,
Serialize a map key. Read more
sourceimpl<Ok, Error> SerializeSeq for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeSeq for Impossible<Ok, Error> where
Error: Error,
sourceimpl<Ok, Error> SerializeStruct for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeStruct for Impossible<Ok, Error> where
Error: Error,
sourceimpl<Ok, Error> SerializeStructVariant for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeStructVariant for Impossible<Ok, Error> where
Error: Error,
sourceimpl<Ok, Error> SerializeTuple for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeTuple for Impossible<Ok, Error> where
Error: Error,
sourceimpl<Ok, Error> SerializeTupleStruct for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeTupleStruct for Impossible<Ok, Error> where
Error: Error,
sourceimpl<Ok, Error> SerializeTupleVariant for Impossible<Ok, Error> where
Error: Error,
impl<Ok, Error> SerializeTupleVariant for Impossible<Ok, Error> where
Error: Error,
Auto Trait Implementations
impl<Ok, Error> RefUnwindSafe for Impossible<Ok, Error> where
Error: RefUnwindSafe,
Ok: RefUnwindSafe,
impl<Ok, Error> Send for Impossible<Ok, Error> where
Error: Send,
Ok: Send,
impl<Ok, Error> Sync for Impossible<Ok, Error> where
Error: Sync,
Ok: Sync,
impl<Ok, Error> Unpin for Impossible<Ok, Error> where
Error: Unpin,
Ok: Unpin,
impl<Ok, Error> UnwindSafe for Impossible<Ok, Error> where
Error: UnwindSafe,
Ok: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
where
S: Into<Dispatch>,
T: Future, type Output = <T as Future>::Output;
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more