# Enum proc_macro::Level

source ·

    #[non_exhaustive]pub enum Level {
        Error,
        Warning,
        Note,
        Help,
    }

🔬This is a nightly-only experimental API. (`proc_macro_diagnostic` #54140)
Expand description

An enum representing a diagnostic level.

## Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
§

### Error

🔬This is a nightly-only experimental API. (`proc_macro_diagnostic` #54140)

An error.

§

### Warning

🔬This is a nightly-only experimental API. (`proc_macro_diagnostic` #54140)

A warning.

§

### Note

🔬This is a nightly-only experimental API. (`proc_macro_diagnostic` #54140)

A note.

§

### Help

🔬This is a nightly-only experimental API. (`proc_macro_diagnostic` #54140)

A help message.

## Trait Implementations§

source§

### impl Clone for Level

source§

#### fn clone(&self) -> Level

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from `source`. Read more
source§

### impl Debug for Level

source§

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

Formats the value using the given formatter. Read more
source§

### impl Copy for Level

## Auto Trait Implementations§

§

### impl RefUnwindSafe for Level

§

### impl Send for Level

§

### impl Sync for Level

§

### impl Unpin for Level

§

### impl UnwindSafe for Level

## Blanket Implementations§

source§

### impl<T> Any for Twhere T: 'static + ?Sized,

source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
source§

### impl<T> Borrow<T> for Twhere T: ?Sized,

source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

### impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

### impl<T> From<T> for T

source§

#### fn from(t: T) -> T

Returns the argument unchanged.

source§

### impl<T, U> Into<U> for Twhere U: From<T>,

source§

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

source§

### impl<T> ToOwned for Twhere T: Clone,

§

#### type Owned = T

The resulting type after obtaining ownership.
source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

### impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

#### type Error = Infallible

The type returned in the event of a conversion error.
source§

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

### impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.