Struct tracing_subscriber::field::debug::Alt

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pub struct Alt<V>(/* private fields */);
Expand description

A visitor wrapper that ensures any fmt::Debug fields are formatted using the alternate (:#) formatter.

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impl<V> Alt<V>

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pub fn new(inner: V) -> Self

Wraps the provided visitor so that any fmt::Debug fields are formatted using the alternative (:#) formatter.

Trait Implementations§

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impl<V: Clone> Clone for Alt<V>

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fn clone(&self) -> Alt<V>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<V: Debug> Debug for Alt<V>

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

Formats the value using the given formatter. Read more
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impl<T, V> MakeVisitor<T> for Alt<V>
where V: MakeVisitor<T>,

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type Visitor = Alt<<V as MakeVisitor<T>>::Visitor>

The visitor type produced by this MakeVisitor.
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fn make_visitor(&self, target: T) -> Self::Visitor

Make a new visitor for the provided target.
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impl<V> Visit for Alt<V>
where V: Visit,

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fn record_str(&mut self, field: &Field, value: &str)

Visit a string value.

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fn record_f64(&mut self, field: &Field, value: f64)

Visit a double-precision floating point value.
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fn record_i64(&mut self, field: &Field, value: i64)

Visit a signed 64-bit integer value.
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fn record_u64(&mut self, field: &Field, value: u64)

Visit an unsigned 64-bit integer value.
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fn record_bool(&mut self, field: &Field, value: bool)

Visit a boolean value.
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fn record_debug(&mut self, field: &Field, value: &dyn Debug)

Visit a value implementing fmt::Debug.
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fn record_i128(&mut self, field: &Field, value: i128)

Visit a signed 128-bit integer value.
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fn record_u128(&mut self, field: &Field, value: u128)

Visit an unsigned 128-bit integer value.
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fn record_error(&mut self, field: &Field, value: &(dyn Error + 'static))

Records a type implementing Error. Read more
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impl<V> VisitFmt for Alt<V>
where V: VisitFmt,

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fn writer(&mut self) -> &mut dyn Write

Returns the formatter that this visitor writes to.
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impl<V, O> VisitOutput<O> for Alt<V>
where V: VisitOutput<O>,

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fn finish(self) -> O

Completes the visitor, returning any output. Read more
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fn visit<R>(self, fields: &R) -> Out
where R: RecordFields, Self: Sized,

Visit a set of fields, and return the output of finishing the visitor once the fields have been visited.
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impl<V> VisitWrite for Alt<V>
where V: VisitWrite,

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fn writer(&mut self) -> &mut dyn Write

Returns the writer that this visitor writes to.

Auto Trait Implementations§

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impl<V> Freeze for Alt<V>
where V: Freeze,

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impl<V> RefUnwindSafe for Alt<V>
where V: RefUnwindSafe,

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impl<V> Send for Alt<V>
where V: Send,

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impl<V> Sync for Alt<V>
where V: Sync,

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impl<V> Unpin for Alt<V>
where V: Unpin,

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impl<V> UnwindSafe for Alt<V>
where V: 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> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dst. 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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, M> MakeExt<T> for M
where M: MakeVisitor<T> + Sealed<MakeExtMarker<T>>,

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fn debug_alt(self) -> Alt<Self>

Wraps self so that any fmt::Debug fields are recorded using the alternate formatter ({:#?}).
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fn display_messages(self) -> Messages<Self>

Wraps self so that any string fields named “message” are recorded using fmt::Display.
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fn delimited<D>(self, delimiter: D) -> Delimited<D, Self>
where D: AsRef<str> + Clone, Self::Visitor: VisitFmt,

Wraps self so that when fields are formatted to a writer, they are separated by the provided delimiter.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more