Enum LogLevel 

#[repr(u8)]
pub enum LogLevel {
    Emergency = 0,
    Alert = 1,
    Critical = 2,
    Error = 3,
    Warning = 4,
    Notice = 5,
    Info = 6,
    Debug = 7,
}

日志级别枚举

定义了从 Emergency (最高优先级) 到 Debug (最低优先级) 的八个优先级。 这些级别与 Linux 内核的 KERN_* 常量兼容。

级别语义

• Emergency (紧急): 系统不可用
• Alert (警报): 必须立即采取行动
• Critical (关键): 关键状况
• Error (错误): 错误状况
• Warning (警告): 警告状况
• Notice (通知): 正常但重要的状况
• Info (信息): 信息性消息
• Debug (调试): 调试级别的消息

Variants

Emergency = 0

系统不可用

Alert = 1

必须立即采取行动

Critical = 2

关键状况

Error = 3

错误状况

Warning = 4

警告状况

Notice = 5

正常但重要的状况

Info = 6

信息性消息

Debug = 7

调试级别的消息

Implementations

impl LogLevel

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

返回日志级别的字符串表示形式

返回一个简短的标签，如 [ERR]、[INFO] 等。

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

返回此日志级别对应的 ANSI 颜色代码

颜色映射

• Emergency/Alert/Critical: 亮红色
• Error: 红色
• Warning: 黄色
• Notice: 亮白色
• Info: 白色
• Debug: 灰色

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

返回 ANSI 颜色重置代码

pub fn from_u8(level: u8) -> Self

将 u8 值转换为日志级别

如果该值无效，则返回默认日志级别。

pub const fn to_u8(self) -> u8

将日志级别转换为 u8 值

返回值

日志级别对应的数值 (0-7)

Trait Implementations

impl Clone for LogLevel

fn clone(&self) -> LogLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogLevel

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

Formats the value using the given formatter.

impl Ord for LogLevel

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

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

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

impl Eq for LogLevel

impl StructuralPartialEq for LogLevel