Struct manyhow::Emitter

pub struct Emitter(/* private fields */);

Allows emitting errors without returning.

Implementations

impl Emitter

pub fn new() -> Self

Creates an Emitter, this can be used to collect errors than can later be converted with Emitter::into_result().

pub fn emit(&mut self, error: impl ToTokensError + 'static)

Emitts an error

pub fn is_empty(&self) -> bool

Checks if any errors were emitted

pub fn clear(&mut self)

Removes all emitted errors

pub fn into_result(&mut self) -> Result<(), Error>

Returns emitted errors if not Self::is_empty.

If no errors where emitted, returns Ok(()).

Note: This clears the emitter to avoid returning duplicate errors.

Trait Implementations

impl Debug for Emitter

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

Formats the value using the given formatter.

impl Default for Emitter

fn default() -> Emitter

Returns the “default value” for a type.

impl<I: ToTokensError + 'static> Extend<I> for Emitter

fn extend<T: IntoIterator<Item = I>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.