143 lines
3.2 KiB
Plaintext
143 lines
3.2 KiB
Plaintext
|
---
|
|||
|
|
source: tests/output.rs
|
|||
|
|
expression: "get_stdout(&[item])"
|
|||
|
|
---
|
|||
|
|
log Struct log::Metadata rusty-man
|
|||
|
|
|
|||
|
|
SYNOPSIS
|
|||
|
|
pub struct Metadata<'a> { /* fields omitted */ }
|
|||
|
|
|
|||
|
|
DESCRIPTION
|
|||
|
|
Metadata about a log message.
|
|||
|
|
|
|||
|
|
# Use
|
|||
|
|
|
|||
|
|
`Metadata` structs are created when users of the library use logging macros.
|
|||
|
|
|
|||
|
|
They are consumed by implementations of the `Log` trait in the `enabled` method.
|
|||
|
|
|
|||
|
|
`Record`s use `Metadata` to determine the log message's severity and target.
|
|||
|
|
|
|||
|
|
Users should use the `log_enabled!` macro in their code to avoid constructing expensive log
|
|||
|
|
messages.
|
|||
|
|
|
|||
|
|
# Examples
|
|||
|
|
|
|||
|
|
ⓘThis code runs with edition 2018
|
|||
|
|
use log::{Record, Level, Metadata};
|
|||
|
|
struct MyLogger;
|
|||
|
|
impl log::Log for MyLogger {
|
|||
|
|
fn enabled(&self, metadata: &Metadata) -> bool {
|
|||
|
|
metadata.level() <= Level::Info
|
|||
|
|
}
|
|||
|
|
fn log(&self, record: &Record) {
|
|||
|
|
if self.enabled(record.metadata()) {
|
|||
|
|
println!("{} - {}", record.level(), record.args());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
fn flush(&self) {}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
METHODS
|
|||
|
|
impl<'a> Metadata<'a>
|
|||
|
|
builder
|
|||
|
|
pub fn builder() -> MetadataBuilder<'a>
|
|||
|
|
|
|||
|
|
Returns a new builder.
|
|||
|
|
|
|||
|
|
level
|
|||
|
|
pub fn level(&self) -> Level
|
|||
|
|
|
|||
|
|
The verbosity level of the message.
|
|||
|
|
|
|||
|
|
target
|
|||
|
|
pub fn target(&self) -> &'a str
|
|||
|
|
|
|||
|
|
The name of the target of the directive.
|
|||
|
|
|
|||
|
|
IMPLEMENTATIONS
|
|||
|
|
Trait Implementations
|
|||
|
|
Clone
|
|||
|
|
impl<'a> Clone for Metadata<'a>
|
|||
|
|
|
|||
|
|
Debug
|
|||
|
|
impl<'a> Debug for Metadata<'a>
|
|||
|
|
|
|||
|
|
Eq
|
|||
|
|
impl<'a> Eq for Metadata<'a>
|
|||
|
|
|
|||
|
|
Hash
|
|||
|
|
impl<'a> Hash for Metadata<'a>
|
|||
|
|
|
|||
|
|
Ord
|
|||
|
|
impl<'a> Ord for Metadata<'a>
|
|||
|
|
|
|||
|
|
PartialEq
|
|||
|
|
impl<'a> PartialEq<Metadata<'a>> for Metadata<'a>
|
|||
|
|
|
|||
|
|
PartialOrd
|
|||
|
|
impl<'a> PartialOrd<Metadata<'a>> for Metadata<'a>
|
|||
|
|
|
|||
|
|
StructuralEq
|
|||
|
|
impl<'a> StructuralEq for Metadata<'a>
|
|||
|
|
|
|||
|
|
StructuralPartialEq
|
|||
|
|
impl<'a> StructuralPartialEq for Metadata<'a>
|
|||
|
|
|
|||
|
|
Auto Trait Implementations
|
|||
|
|
RefUnwindSafe
|
|||
|
|
impl<'a> RefUnwindSafe for Metadata<'a>
|
|||
|
|
|
|||
|
|
Send
|
|||
|
|
impl<'a> Send for Metadata<'a>
|
|||
|
|
|
|||
|
|
Sync
|
|||
|
|
impl<'a> Sync for Metadata<'a>
|
|||
|
|
|
|||
|
|
Unpin
|
|||
|
|
impl<'a> Unpin for Metadata<'a>
|
|||
|
|
|
|||
|
|
UnwindSafe
|
|||
|
|
impl<'a> UnwindSafe for Metadata<'a>
|
|||
|
|
|
|||
|
|
Blanket Implementations
|
|||
|
|
Any
|
|||
|
|
impl<T> Any for T
|
|||
|
|
where
|
|||
|
|
T: 'static + ?Sized,
|
|||
|
|
|
|||
|
|
Borrow
|
|||
|
|
impl<T> Borrow<T> for T
|
|||
|
|
where
|
|||
|
|
T: ?Sized,
|
|||
|
|
|
|||
|
|
BorrowMut
|
|||
|
|
impl<T> BorrowMut<T> for T
|
|||
|
|
where
|
|||
|
|
T: ?Sized,
|
|||
|
|
|
|||
|
|
From
|
|||
|
|
impl<T> From<T> for T
|
|||
|
|
|
|||
|
|
Into
|
|||
|
|
impl<T, U> Into<U> for T
|
|||
|
|
where
|
|||
|
|
U: From<T>,
|
|||
|
|
|
|||
|
|
ToOwned
|
|||
|
|
impl<T> ToOwned for T
|
|||
|
|
where
|
|||
|
|
T: Clone,
|
|||
|
|
|
|||
|
|
TryFrom
|
|||
|
|
impl<T, U> TryFrom<U> for T
|
|||
|
|
where
|
|||
|
|
U: Into<T>,
|
|||
|
|
|
|||
|
|
TryInto
|
|||
|
|
impl<T, U> TryInto<U> for T
|
|||
|
|
where
|
|||
|
|
U: TryFrom<T>,
|
|||
|
|
|
|||
|
|
|