Enum LevelFilter 

#[repr(u8)]
pub enum LevelFilter {
    Off = 0,
    Emerg = 1,
    Alert = 2,
    Crit = 3,
    Error = 4,
    Warning = 5,
    Notice = 6,
    Info = 7,
    Debug = 8,
}

A filter for log levels.

LevelFilter::from_level(level) includes that level and all more-severe levels. LevelFilter::Off disables all logging.

The filtering rule: a level passes when (filter as u8) > (level as u8).

LevelFilter::Off(0)     -> nothing passes
LevelFilter::Error(4)   -> Emerg(0), Alert(1), Crit(2), Error(3)
LevelFilter::Debug(8)   -> everything

Variants

Off = 0

All logging disabled.

Emerg = 1

Enable Emerg only.

Alert = 2

Enable Emerg and Alert.

Crit = 3

Enable Emerg through Crit.

Error = 4

Enable Emerg through Error.

Warning = 5

Enable Emerg through Warning.

Notice = 6

Enable Emerg through Notice.

Info = 7

Enable Emerg through Info.

Debug = 8

Enable all levels.

Implementations

impl LevelFilter

pub const fn is_enabled(self, level: Level) -> bool

Returns true if level passes this filter.

pub const fn from_level(level: Level) -> Self

Constructs a filter that enables level and all more-severe levels.

pub const fn from_u8(val: u8) -> Self

Creates a LevelFilter from a numeric value (0–8).

Values > 8 are clamped to Debug.

Trait Implementations

impl Clone for LevelFilter

fn clone(&self) -> LevelFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LevelFilter

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

Formats the value using the given formatter.

impl Hash for LevelFilter

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given [Hasher].

impl Ord for LevelFilter

fn cmp(&self, other: &LevelFilter) -> Ordering

This method returns an [Ordering] between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for LevelFilter

fn eq(&self, other: &LevelFilter) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for LevelFilter

fn partial_cmp(&self, other: &LevelFilter) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for LevelFilter

impl Eq for LevelFilter

impl StructuralPartialEq for LevelFilter