macro_rules! debug {
(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 debug level.
When both a message and fields are included, curly braces ({
and }
) are
used to delimit the list of fields from the format string for the message.
A trailing comma on the final field is valid.
use tracing::field;
let pos = Position { x: 3.234, y: -1.223 };
debug!(?pos.x, ?pos.y);
debug!(target: "app_events", { position = ?pos }, "New position");