Enum Level 

#[repr(u8)]
pub enum Level {
    Error = 0,
    Warn = 1,
    Info = 2,
    Debug = 3,
    Trace = 4,
}

Log level for kernel messages.

Levels are ordered by severity, with Error being the most severe and Trace being the most verbose. This ordering allows filtering: if a logger is configured for Info level, it will log Error, Warn, and Info messages, but not Debug or Trace.

Linux Equivalent

Level	Linux Constant	Usage
Error	KERN_ERR	Critical errors requiring immediate attention
Warn	KERN_WARNING	Warning conditions
Info	KERN_INFO	Informational messages
Debug	KERN_DEBUG	Debug-level messages
Trace	(custom)	Most verbose tracing

Example

use reovim_kernel::api::v1::*;
use std::str::FromStr;

let level = Level::Info;
assert!(level <= Level::Debug);  // Info is less verbose than Debug
assert!(level >= Level::Error);  // Info is more verbose than Error

// Convert to/from string
assert_eq!(Level::Error.as_str(), "ERROR");
assert_eq!(Level::from_str("warn"), Ok(Level::Warn));

Variants

Error = 0

Critical errors requiring immediate attention.

Use for conditions that prevent normal operation. Linux equivalent: KERN_ERR

Warn = 1

Warning conditions.

Use for potentially harmful situations that don’t prevent operation. Linux equivalent: KERN_WARNING

Info = 2

Informational messages.

Use for general operational messages. Linux equivalent: KERN_INFO

Debug = 3

Debug-level messages.

Use for detailed diagnostic information during development. Linux equivalent: KERN_DEBUG

Trace = 4

Trace-level messages.

Most verbose level, for detailed tracing of execution flow.

Implementations

impl Level

pub const ALL: [Self; 5]

All log levels in order of severity.

pub const fn as_str(&self) -> &'static str

Returns the string representation of this level.

Example

use reovim_kernel::api::v1::*;

assert_eq!(Level::Error.as_str(), "ERROR");
assert_eq!(Level::Warn.as_str(), "WARN");
assert_eq!(Level::Info.as_str(), "INFO");
assert_eq!(Level::Debug.as_str(), "DEBUG");
assert_eq!(Level::Trace.as_str(), "TRACE");

pub const fn is_at_least(&self, other: Self) -> bool

Check if this level is at least as severe as the given level.

Example

use reovim_kernel::api::v1::*;

assert!(Level::Error.is_at_least(Level::Info));   // Error is more severe
assert!(Level::Info.is_at_least(Level::Info));    // Same level
assert!(!Level::Debug.is_at_least(Level::Info));  // Debug is less severe

Trait Implementations

impl Clone for Level

fn clone(&self) -> Level

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Level

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

Formats the value using the given formatter.

impl Default for Level

fn default() -> Level

Returns the “default value” for a type.

impl Display for Level

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

Formats the value using the given formatter.

impl FromStr for Level

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a level from a string (case-insensitive).

Example

use reovim_kernel::api::v1::*;
use std::str::FromStr;

assert_eq!(Level::from_str("error"), Ok(Level::Error));
assert_eq!(Level::from_str("WARN"), Ok(Level::Warn));
assert_eq!(Level::from_str("Info"), Ok(Level::Info));
assert!(Level::from_str("unknown").is_err());

type Err = ParseLevelError

The associated error which can be returned from parsing.

impl Hash for Level

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 Level

fn cmp(&self, other: &Level) -> 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 Level

fn eq(&self, other: &Level) -> 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 Level

fn partial_cmp(&self, other: &Level) -> 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 Level

impl Eq for Level

impl StructuralPartialEq for Level