Struct Alt

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

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

Implementations

impl<V> Alt<V>

pub fn new(inner: V) -> Self

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

Trait Implementations

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

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

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<V: Debug> Debug for Alt<V>

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

Formats the value using the given formatter.

impl<T, V> MakeVisitor<T> for Alt<V>

where V: MakeVisitor<T>,

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

The visitor type produced by this MakeVisitor.

fn make_visitor(&self, target: T) -> Self::Visitor

Make a new visitor for the provided target.

impl<V> Visit for Alt<V>

where V: Visit,

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

Visit a string value.

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

Visit a double-precision floating point value.

fn record_i64(&mut self, field: &Field, value: i64)

Visit a signed 64-bit integer value.

fn record_u64(&mut self, field: &Field, value: u64)

Visit an unsigned 64-bit integer value.

fn record_bool(&mut self, field: &Field, value: bool)

Visit a boolean value.

fn record_debug(&mut self, field: &Field, value: &dyn Debug)

Visit a value implementing fmt::Debug.

fn record_i128(&mut self, field: &Field, value: i128)

Visit a signed 128-bit integer value.

fn record_u128(&mut self, field: &Field, value: u128)

Visit an unsigned 128-bit integer value.

fn record_error(&mut self, field: &Field, value: &(dyn Error + 'static))

Records a type implementing Error.

impl<V> VisitFmt for Alt<V>

where V: VisitFmt,

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

Returns the formatter that this visitor writes to.

impl<V, O> VisitOutput<O> for Alt<V>

where V: VisitOutput<O>,

fn finish(self) -> O

Completes the visitor, returning any output.

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.

impl<V> VisitWrite for Alt<V>

where V: VisitWrite,

Available on crate feature std only.

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

Returns the writer that this visitor writes to.

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.