Struct rustc_lint_defs::Lint

source ·
pub struct Lint {
    pub name: &'static str,
    pub default_level: Level,
    pub desc: &'static str,
    pub edition_lint_opts: Option<(Edition, Level)>,
    pub report_in_external_macro: bool,
    pub future_incompatible: Option<FutureIncompatibleInfo>,
    pub is_plugin: bool,
    pub feature_gate: Option<Symbol>,
    pub crate_level_only: bool,
Expand description

Specification of a single lint.


§name: &'static str

A string identifier for the lint.

This identifies the lint in attributes and in command-line arguments. In those contexts it is always lowercase, but this field is compared in a way which is case-insensitive for ASCII characters. This allows declare_lint!() invocations to follow the convention of upper-case statics without repeating the name.

The name is written with underscores, e.g., “unused_imports”. On the command line, underscores become dashes.

See for naming guidelines.

§default_level: Level

Default level for the lint.

See for guidelines on choosing a default level.

§desc: &'static str

Description of the lint or the issue it detects.

e.g., “imports that are never used”

§edition_lint_opts: Option<(Edition, Level)>

Starting at the given edition, default to the given lint level. If this is None, then use default_level.

§report_in_external_macro: bool

true if this lint is reported even inside expansions of external macros.

§future_incompatible: Option<FutureIncompatibleInfo>§is_plugin: bool§feature_gate: Option<Symbol>

Some if this lint is feature gated, otherwise None.

§crate_level_only: bool



impl Lint


pub const fn default_fields_for_macro() -> Self


pub fn name_lower(&self) -> String

Gets the lint’s name, with ASCII letters converted to lowercase.


pub fn default_level(&self, edition: Edition) -> Level

Trait Implementations§


impl Clone for Lint


fn clone(&self) -> Lint

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

impl Debug for Lint


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

Formats the value using the given formatter. Read more

impl Copy for Lint

Auto Trait Implementations§


impl RefUnwindSafe for Lint


impl Send for Lint


impl Sync for Lint


impl Unpin for Lint


impl UnwindSafe for Lint

Blanket Implementations§


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


fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source§

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.


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

const: unstable · 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.


impl<T> ToOwned for Twhere T: Clone,


type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

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

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

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


type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.

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.
const: unstable · source§

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

Performs the conversion.


Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 144 bytes