macro_rules! warn {
(target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => { ... };
(target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => { ... };
(target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => { ... };
(target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => { ... };
(target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => { ... };
(parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => { ... };
(parent: $parent:expr, $($k:ident).+ = $($field:tt)*) => { ... };
(parent: $parent:expr, ?$($k:ident).+ = $($field:tt)*) => { ... };
(parent: $parent:expr, %$($k:ident).+ = $($field:tt)*) => { ... };
(parent: $parent:expr, $($k:ident).+, $($field:tt)*) => { ... };
(parent: $parent:expr, ?$($k:ident).+, $($field:tt)*) => { ... };
(parent: $parent:expr, %$($k:ident).+, $($field:tt)*) => { ... };
(parent: $parent:expr, $($arg:tt)+) => { ... };
(target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => { ... };
(target: $target:expr, $($k:ident).+ $($field:tt)* ) => { ... };
(target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => { ... };
(target: $target:expr, %$($k:ident).+ $($field:tt)* ) => { ... };
(target: $target:expr, $($arg:tt)+ ) => { ... };
({ $($field:tt)+ }, $($arg:tt)+ ) => { ... };
($($k:ident).+ = $($field:tt)*) => { ... };
(?$($k:ident).+ = $($field:tt)*) => { ... };
(%$($k:ident).+ = $($field:tt)*) => { ... };
($($k:ident).+, $($field:tt)*) => { ... };
(?$($k:ident).+, $($field:tt)*) => { ... };
(%$($k:ident).+, $($field:tt)*) => { ... };
(?$($k:ident).+) => { ... };
(%$($k:ident).+) => { ... };
($($k:ident).+) => { ... };
($($arg:tt)+) => { ... };
}
Constructs an event at the warn level.
This functions similarly to the event!
macro. See the top-level
documentation for details on the syntax accepted by
this macro.
use tracing::warn;
let warn_description = "Invalid Input";
let input = &[0x27, 0x45];
warn!(?input, warning = warn_description);
warn!(
target: "input_events",
warning = warn_description,
"Received warning for input: {:?}", input,
);