Struct LogFilter

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

Filter for logging levels

This is a “copy” value which represents a set of enabled logging levels. Filters can be combined using the | and |= bit-or operators. A filter can be generated from a LogLevel using LogFilter::from. Note that converting from a LogLevel will also enable any related levels – see LogFilter::from documentation.

Implementations

impl LogFilter

pub fn new() -> Self

Return a LogFilter with no levels enabled

pub fn all(levels: &[LogLevel]) -> Self

Return a LogFilter with all the listed levels enabled, as converted by LogFilter::from.

pub fn allows(&self, level: LogLevel) -> bool

Test whether the given LogLevel is enabled

pub fn is_empty(&self) -> bool

Test whether the set of enabled levels is empty

Trait Implementations

impl BitOr for LogFilter

type Output = LogFilter

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self

Performs the | operation.

impl BitOrAssign for LogFilter

fn bitor_assign(&mut self, rhs: Self)

Performs the |= operation.

impl Clone for LogFilter

fn clone(&self) -> LogFilter

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LogFilter

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

Formats the value using the given formatter.

impl Default for LogFilter

fn default() -> LogFilter

Returns the “default value” for a type.

impl Display for LogFilter

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

Formats the value using the given formatter.

impl From<LogLevel> for LogFilter

fn from(level: LogLevel) -> Self

Convert a LogLevel into a LogFilter. Where a severity level (LogLevel::Trace to LogLevel::Error) is passed, all higher severity levels are also enabled. Where LogLevel::Open or LogLevel::Close is passed, the other is also enabled. LogLevel::Audit only enables itself. LogLevel::Off gives no levels enabled.

impl FromStr for LogFilter

type Err = LogLevelError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<LogFilter, LogLevelError>

Parses a string s to return a value of this type.

impl PartialEq for LogFilter

fn eq(&self, other: &LogFilter) -> 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 Copy for LogFilter

impl Eq for LogFilter

impl StructuralPartialEq for LogFilter