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f035d41b XL |
1 | /// Constructs a new span. |
2 | /// | |
3 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
4 | /// this macro. | |
5 | /// | |
6 | /// [lib]: index.html#using-the-macros | |
7 | /// | |
8 | /// # Examples | |
9 | /// | |
10 | /// Creating a new span: | |
11 | /// ``` | |
12 | /// # use tracing::{span, Level}; | |
13 | /// # fn main() { | |
14 | /// let span = span!(Level::TRACE, "my span"); | |
15 | /// let _enter = span.enter(); | |
16 | /// // do work inside the span... | |
17 | /// # } | |
18 | /// ``` | |
19 | #[macro_export] | |
20 | macro_rules! span { | |
21 | (target: $target:expr, parent: $parent:expr, $lvl:expr, $name:expr) => { | |
22 | $crate::span!(target: $target, parent: $parent, $lvl, $name,) | |
23 | }; | |
24 | (target: $target:expr, parent: $parent:expr, $lvl:expr, $name:expr, $($fields:tt)*) => { | |
5869c6ff XL |
25 | { |
26 | use $crate::__macro_support::Callsite as _; | |
27 | static CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! { | |
28 | name: $name, | |
29 | kind: $crate::metadata::Kind::SPAN, | |
30 | target: $target, | |
31 | level: $lvl, | |
32 | fields: $($fields)* | |
33 | }; | |
34 | let mut interest = $crate::subscriber::Interest::never(); | |
35 | if $crate::level_enabled!($lvl) | |
36 | && { interest = CALLSITE.interest(); !interest.is_never() } | |
37 | && CALLSITE.is_enabled(interest) | |
38 | { | |
39 | let meta = CALLSITE.metadata(); | |
40 | // span with explicit parent | |
41 | $crate::Span::child_of( | |
42 | $parent, | |
43 | meta, | |
44 | &$crate::valueset!(meta.fields(), $($fields)*), | |
45 | ) | |
46 | } else { | |
47 | let span = CALLSITE.disabled_span(); | |
6a06907d | 48 | $crate::if_log_enabled! { $lvl, { |
5869c6ff XL |
49 | span.record_all(&$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*)); |
50 | }}; | |
51 | span | |
52 | } | |
53 | } | |
f035d41b XL |
54 | }; |
55 | (target: $target:expr, $lvl:expr, $name:expr, $($fields:tt)*) => { | |
5869c6ff XL |
56 | { |
57 | use $crate::__macro_support::Callsite as _; | |
58 | static CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! { | |
59 | name: $name, | |
60 | kind: $crate::metadata::Kind::SPAN, | |
61 | target: $target, | |
62 | level: $lvl, | |
63 | fields: $($fields)* | |
64 | }; | |
65 | let mut interest = $crate::subscriber::Interest::never(); | |
66 | if $crate::level_enabled!($lvl) | |
67 | && { interest = CALLSITE.interest(); !interest.is_never() } | |
68 | && CALLSITE.is_enabled(interest) | |
69 | { | |
70 | let meta = CALLSITE.metadata(); | |
71 | // span with contextual parent | |
72 | $crate::Span::new( | |
73 | meta, | |
74 | &$crate::valueset!(meta.fields(), $($fields)*), | |
75 | ) | |
76 | } else { | |
77 | let span = CALLSITE.disabled_span(); | |
6a06907d | 78 | $crate::if_log_enabled! { $lvl, { |
5869c6ff XL |
79 | span.record_all(&$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*)); |
80 | }}; | |
81 | span | |
82 | } | |
83 | } | |
f035d41b XL |
84 | }; |
85 | (target: $target:expr, parent: $parent:expr, $lvl:expr, $name:expr) => { | |
86 | $crate::span!(target: $target, parent: $parent, $lvl, $name,) | |
87 | }; | |
88 | (parent: $parent:expr, $lvl:expr, $name:expr, $($fields:tt)*) => { | |
89 | $crate::span!( | |
90 | target: module_path!(), | |
91 | parent: $parent, | |
92 | $lvl, | |
93 | $name, | |
94 | $($fields)* | |
95 | ) | |
96 | }; | |
97 | (parent: $parent:expr, $lvl:expr, $name:expr) => { | |
98 | $crate::span!( | |
99 | target: module_path!(), | |
100 | parent: $parent, | |
101 | $lvl, | |
102 | $name, | |
103 | ) | |
104 | }; | |
105 | (target: $target:expr, $lvl:expr, $name:expr, $($fields:tt)*) => { | |
106 | $crate::span!( | |
107 | target: $target, | |
108 | $lvl, | |
109 | $name, | |
110 | $($fields)* | |
111 | ) | |
112 | }; | |
113 | (target: $target:expr, $lvl:expr, $name:expr) => { | |
114 | $crate::span!(target: $target, $lvl, $name,) | |
115 | }; | |
116 | ($lvl:expr, $name:expr, $($fields:tt)*) => { | |
117 | $crate::span!( | |
118 | target: module_path!(), | |
119 | $lvl, | |
120 | $name, | |
121 | $($fields)* | |
122 | ) | |
123 | }; | |
124 | ($lvl:expr, $name:expr) => { | |
125 | $crate::span!( | |
126 | target: module_path!(), | |
127 | $lvl, | |
128 | $name, | |
129 | ) | |
130 | }; | |
131 | } | |
132 | ||
133 | /// Constructs a span at the trace level. | |
134 | /// | |
135 | /// [Fields] and [attributes] are set using the same syntax as the [`span!`] | |
136 | /// macro. | |
137 | /// | |
138 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
139 | /// this macro. | |
140 | /// | |
141 | /// [lib]: index.html#using-the-macros | |
142 | /// [attributes]: index.html#configuring-attributes | |
143 | /// [Fields]: index.html#recording-fields | |
144 | /// [`span!`]: macro.span.html | |
145 | /// | |
146 | /// # Examples | |
147 | /// | |
148 | /// ```rust | |
149 | /// # use tracing::{trace_span, span, Level}; | |
150 | /// # fn main() { | |
151 | /// trace_span!("my_span"); | |
152 | /// // is equivalent to: | |
153 | /// span!(Level::TRACE, "my_span"); | |
154 | /// # } | |
155 | /// ``` | |
156 | /// | |
157 | /// ```rust | |
158 | /// # use tracing::{trace_span, span, Level}; | |
159 | /// # fn main() { | |
160 | /// let span = trace_span!("my span"); | |
161 | /// span.in_scope(|| { | |
162 | /// // do work inside the span... | |
163 | /// }); | |
164 | /// # } | |
165 | /// ``` | |
166 | #[macro_export] | |
167 | macro_rules! trace_span { | |
168 | (target: $target:expr, parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
169 | $crate::span!( | |
170 | target: $target, | |
171 | parent: $parent, | |
172 | $crate::Level::TRACE, | |
173 | $name, | |
174 | $($field)* | |
175 | ) | |
176 | }; | |
177 | (target: $target:expr, parent: $parent:expr, $name:expr) => { | |
178 | $crate::trace_span!(target: $target, parent: $parent, $name,) | |
179 | }; | |
180 | (parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
181 | $crate::span!( | |
182 | target: module_path!(), | |
183 | parent: $parent, | |
184 | $crate::Level::TRACE, | |
185 | $name, | |
186 | $($field)* | |
187 | ) | |
188 | }; | |
189 | (parent: $parent:expr, $name:expr) => { | |
190 | $crate::trace_span!(parent: $parent, $name,) | |
191 | }; | |
192 | (target: $target:expr, $name:expr, $($field:tt)*) => { | |
193 | $crate::span!( | |
194 | target: $target, | |
195 | $crate::Level::TRACE, | |
196 | $name, | |
197 | $($field)* | |
198 | ) | |
199 | }; | |
200 | (target: $target:expr, $name:expr) => { | |
201 | $crate::trace_span!(target: $target, $name,) | |
202 | }; | |
203 | ($name:expr, $($field:tt)*) => { | |
204 | $crate::span!( | |
205 | target: module_path!(), | |
206 | $crate::Level::TRACE, | |
207 | $name, | |
208 | $($field)* | |
209 | ) | |
210 | }; | |
211 | ($name:expr) => { $crate::trace_span!($name,) }; | |
212 | } | |
213 | ||
214 | /// Constructs a span at the debug level. | |
215 | /// | |
216 | /// [Fields] and [attributes] are set using the same syntax as the [`span!`] | |
217 | /// macro. | |
218 | /// | |
219 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
220 | /// this macro. | |
221 | /// | |
222 | /// [lib]: index.html#using-the-macros | |
223 | /// [attributes]: index.html#configuring-attributes | |
224 | /// [Fields]: index.html#recording-fields | |
225 | /// [`span!`]: macro.span.html | |
226 | /// | |
227 | /// # Examples | |
228 | /// | |
229 | /// ```rust | |
230 | /// # use tracing::{debug_span, span, Level}; | |
231 | /// # fn main() { | |
232 | /// debug_span!("my_span"); | |
233 | /// // is equivalent to: | |
234 | /// span!(Level::DEBUG, "my_span"); | |
235 | /// # } | |
236 | /// ``` | |
237 | /// | |
238 | /// ```rust | |
239 | /// # use tracing::debug_span; | |
240 | /// # fn main() { | |
241 | /// let span = debug_span!("my span"); | |
242 | /// span.in_scope(|| { | |
243 | /// // do work inside the span... | |
244 | /// }); | |
245 | /// # } | |
246 | /// ``` | |
247 | #[macro_export] | |
248 | macro_rules! debug_span { | |
249 | (target: $target:expr, parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
250 | $crate::span!( | |
251 | target: $target, | |
252 | parent: $parent, | |
253 | $crate::Level::DEBUG, | |
254 | $name, | |
255 | $($field)* | |
256 | ) | |
257 | }; | |
258 | (target: $target:expr, parent: $parent:expr, $name:expr) => { | |
259 | $crate::debug_span!(target: $target, parent: $parent, $name,) | |
260 | }; | |
261 | (parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
262 | $crate::span!( | |
263 | target: module_path!(), | |
264 | parent: $parent, | |
265 | $crate::Level::DEBUG, | |
266 | $name, | |
267 | $($field)* | |
268 | ) | |
269 | }; | |
270 | (parent: $parent:expr, $name:expr) => { | |
271 | $crate::debug_span!(parent: $parent, $name,) | |
272 | }; | |
273 | (target: $target:expr, $name:expr, $($field:tt)*) => { | |
274 | $crate::span!( | |
275 | target: $target, | |
276 | $crate::Level::DEBUG, | |
277 | $name, | |
278 | $($field)* | |
279 | ) | |
280 | }; | |
281 | (target: $target:expr, $name:expr) => { | |
282 | $crate::debug_span!(target: $target, $name,) | |
283 | }; | |
284 | ($name:expr, $($field:tt)*) => { | |
285 | $crate::span!( | |
286 | target: module_path!(), | |
287 | $crate::Level::DEBUG, | |
288 | $name, | |
289 | $($field)* | |
290 | ) | |
291 | }; | |
292 | ($name:expr) => {$crate::debug_span!($name,)}; | |
293 | } | |
294 | ||
295 | /// Constructs a span at the info level. | |
296 | /// | |
297 | /// [Fields] and [attributes] are set using the same syntax as the [`span!`] | |
298 | /// macro. | |
299 | /// | |
300 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
301 | /// this macro. | |
302 | /// | |
303 | /// [lib]: index.html#using-the-macros | |
304 | /// [attributes]: index.html#configuring-attributes | |
305 | /// [Fields]: index.html#recording-fields | |
306 | /// [`span!`]: macro.span.html | |
307 | /// | |
308 | /// # Examples | |
309 | /// | |
310 | /// ```rust | |
311 | /// # use tracing::{span, info_span, Level}; | |
312 | /// # fn main() { | |
313 | /// info_span!("my_span"); | |
314 | /// // is equivalent to: | |
315 | /// span!(Level::INFO, "my_span"); | |
316 | /// # } | |
317 | /// ``` | |
318 | /// | |
319 | /// ```rust | |
320 | /// # use tracing::info_span; | |
321 | /// # fn main() { | |
322 | /// let span = info_span!("my span"); | |
323 | /// span.in_scope(|| { | |
324 | /// // do work inside the span... | |
325 | /// }); | |
326 | /// # } | |
327 | /// ``` | |
328 | #[macro_export] | |
329 | macro_rules! info_span { | |
330 | (target: $target:expr, parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
331 | $crate::span!( | |
332 | target: $target, | |
333 | parent: $parent, | |
334 | $crate::Level::INFO, | |
335 | $name, | |
336 | $($field)* | |
337 | ) | |
338 | }; | |
339 | (target: $target:expr, parent: $parent:expr, $name:expr) => { | |
340 | $crate::info_span!(target: $target, parent: $parent, $name,) | |
341 | }; | |
342 | (parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
343 | $crate::span!( | |
344 | target: module_path!(), | |
345 | parent: $parent, | |
346 | $crate::Level::INFO, | |
347 | $name, | |
348 | $($field)* | |
349 | ) | |
350 | }; | |
351 | (parent: $parent:expr, $name:expr) => { | |
352 | $crate::info_span!(parent: $parent, $name,) | |
353 | }; | |
354 | (target: $target:expr, $name:expr, $($field:tt)*) => { | |
355 | $crate::span!( | |
356 | target: $target, | |
357 | $crate::Level::INFO, | |
358 | $name, | |
359 | $($field)* | |
360 | ) | |
361 | }; | |
362 | (target: $target:expr, $name:expr) => { | |
363 | $crate::info_span!(target: $target, $name,) | |
364 | }; | |
365 | ($name:expr, $($field:tt)*) => { | |
366 | $crate::span!( | |
367 | target: module_path!(), | |
368 | $crate::Level::INFO, | |
369 | $name, | |
370 | $($field)* | |
371 | ) | |
372 | }; | |
373 | ($name:expr) => {$crate::info_span!($name,)}; | |
374 | } | |
375 | ||
376 | /// Constructs a span at the warn level. | |
377 | /// | |
378 | /// [Fields] and [attributes] are set using the same syntax as the [`span!`] | |
379 | /// macro. | |
380 | /// | |
381 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
382 | /// this macro. | |
383 | /// | |
384 | /// [lib]: index.html#using-the-macros | |
385 | /// [attributes]: index.html#configuring-attributes | |
386 | /// [Fields]: index.html#recording-fields | |
387 | /// [`span!`]: macro.span.html | |
388 | /// | |
389 | /// # Examples | |
390 | /// | |
391 | /// ```rust | |
392 | /// # use tracing::{warn_span, span, Level}; | |
393 | /// # fn main() { | |
394 | /// warn_span!("my_span"); | |
395 | /// // is equivalent to: | |
396 | /// span!(Level::WARN, "my_span"); | |
397 | /// # } | |
398 | /// ``` | |
399 | /// | |
400 | /// ```rust | |
401 | /// use tracing::warn_span; | |
402 | /// # fn main() { | |
403 | /// let span = warn_span!("my span"); | |
404 | /// span.in_scope(|| { | |
405 | /// // do work inside the span... | |
406 | /// }); | |
407 | /// # } | |
408 | /// ``` | |
409 | #[macro_export] | |
410 | macro_rules! warn_span { | |
411 | (target: $target:expr, parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
412 | $crate::span!( | |
413 | target: $target, | |
414 | parent: $parent, | |
415 | $crate::Level::WARN, | |
416 | $name, | |
417 | $($field)* | |
418 | ) | |
419 | }; | |
420 | (target: $target:expr, parent: $parent:expr, $name:expr) => { | |
421 | $crate::warn_span!(target: $target, parent: $parent, $name,) | |
422 | }; | |
423 | (parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
424 | $crate::span!( | |
425 | target: module_path!(), | |
426 | parent: $parent, | |
427 | $crate::Level::WARN, | |
428 | $name, | |
429 | $($field)* | |
430 | ) | |
431 | }; | |
432 | (parent: $parent:expr, $name:expr) => { | |
433 | $crate::warn_span!(parent: $parent, $name,) | |
434 | }; | |
435 | (target: $target:expr, $name:expr, $($field:tt)*) => { | |
436 | $crate::span!( | |
437 | target: $target, | |
438 | $crate::Level::WARN, | |
439 | $name, | |
440 | $($field)* | |
441 | ) | |
442 | }; | |
443 | (target: $target:expr, $name:expr) => { | |
444 | $crate::warn_span!(target: $target, $name,) | |
445 | }; | |
446 | ($name:expr, $($field:tt)*) => { | |
447 | $crate::span!( | |
448 | target: module_path!(), | |
449 | $crate::Level::WARN, | |
450 | $name, | |
451 | $($field)* | |
452 | ) | |
453 | }; | |
454 | ($name:expr) => {$crate::warn_span!($name,)}; | |
455 | } | |
456 | /// Constructs a span at the error level. | |
457 | /// | |
458 | /// [Fields] and [attributes] are set using the same syntax as the [`span!`] | |
459 | /// macro. | |
460 | /// | |
461 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
462 | /// this macro. | |
463 | /// | |
464 | /// [lib]: index.html#using-the-macros | |
465 | /// [attributes]: index.html#configuring-attributes | |
466 | /// [Fields]: index.html#recording-fields | |
467 | /// [`span!`]: macro.span.html | |
468 | /// | |
469 | /// # Examples | |
470 | /// | |
471 | /// ```rust | |
472 | /// # use tracing::{span, error_span, Level}; | |
473 | /// # fn main() { | |
474 | /// error_span!("my_span"); | |
475 | /// // is equivalent to: | |
476 | /// span!(Level::ERROR, "my_span"); | |
477 | /// # } | |
478 | /// ``` | |
479 | /// | |
480 | /// ```rust | |
481 | /// # use tracing::error_span; | |
482 | /// # fn main() { | |
483 | /// let span = error_span!("my span"); | |
484 | /// span.in_scope(|| { | |
485 | /// // do work inside the span... | |
486 | /// }); | |
487 | /// # } | |
488 | /// ``` | |
489 | #[macro_export] | |
490 | macro_rules! error_span { | |
491 | (target: $target:expr, parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
492 | $crate::span!( | |
493 | target: $target, | |
494 | parent: $parent, | |
495 | $crate::Level::ERROR, | |
496 | $name, | |
497 | $($field)* | |
498 | ) | |
499 | }; | |
500 | (target: $target:expr, parent: $parent:expr, $name:expr) => { | |
501 | $crate::error_span!(target: $target, parent: $parent, $name,) | |
502 | }; | |
503 | (parent: $parent:expr, $name:expr, $($field:tt)*) => { | |
504 | $crate::span!( | |
505 | target: module_path!(), | |
506 | parent: $parent, | |
507 | $crate::Level::ERROR, | |
508 | $name, | |
509 | $($field)* | |
510 | ) | |
511 | }; | |
512 | (parent: $parent:expr, $name:expr) => { | |
513 | $crate::error_span!(parent: $parent, $name,) | |
514 | }; | |
515 | (target: $target:expr, $name:expr, $($field:tt)*) => { | |
516 | $crate::span!( | |
517 | target: $target, | |
518 | $crate::Level::ERROR, | |
519 | $name, | |
520 | $($field)* | |
521 | ) | |
522 | }; | |
523 | (target: $target:expr, $name:expr) => { | |
524 | $crate::error_span!(target: $target, $name,) | |
525 | }; | |
526 | ($name:expr, $($field:tt)*) => { | |
527 | $crate::span!( | |
528 | target: module_path!(), | |
529 | $crate::Level::ERROR, | |
530 | $name, | |
531 | $($field)* | |
532 | ) | |
533 | }; | |
534 | ($name:expr) => {$crate::error_span!($name,)}; | |
535 | } | |
536 | ||
537 | /// Constructs a new `Event`. | |
538 | /// | |
539 | /// The event macro is invoked with a `Level` and up to 32 key-value fields. | |
540 | /// Optionally, a format string and arguments may follow the fields; this will | |
541 | /// be used to construct an implicit field named "message". | |
542 | /// | |
543 | /// See [the top-level documentation][lib] for details on the syntax accepted by | |
544 | /// this macro. | |
545 | /// | |
546 | /// [lib]: index.html#using-the-macros | |
547 | /// | |
548 | /// # Examples | |
549 | /// | |
550 | /// ```rust | |
551 | /// use tracing::{event, Level}; | |
552 | /// | |
553 | /// # fn main() { | |
554 | /// let data = (42, "forty-two"); | |
555 | /// let private_data = "private"; | |
556 | /// let error = "a bad error"; | |
557 | /// | |
558 | /// event!(Level::ERROR, %error, "Received error"); | |
559 | /// event!( | |
560 | /// target: "app_events", | |
561 | /// Level::WARN, | |
562 | /// private_data, | |
563 | /// ?data, | |
564 | /// "App warning: {}", | |
565 | /// error | |
566 | /// ); | |
567 | /// event!(Level::INFO, the_answer = data.0); | |
568 | /// # } | |
569 | /// ``` | |
570 | /// | |
571 | // /// Note that *unlike `span!`*, `event!` requires a value for all fields. As | |
572 | // /// events are recorded immediately when the macro is invoked, there is no | |
573 | // /// opportunity for fields to be recorded later. A trailing comma on the final | |
574 | // /// field is valid. | |
575 | // /// | |
576 | // /// For example, the following does not compile: | |
577 | // /// ```rust,compile_fail | |
5099ac24 | 578 | // /// # use tracing::{Level, event}; |
f035d41b XL |
579 | // /// # fn main() { |
580 | // /// event!(Level::INFO, foo = 5, bad_field, bar = "hello") | |
581 | // /// #} | |
582 | // /// ``` | |
583 | #[macro_export] | |
584 | macro_rules! event { | |
5099ac24 FG |
585 | (target: $target:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* } )=> ({ |
586 | use $crate::__macro_support::Callsite as _; | |
587 | static CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! { | |
ee023bcb | 588 | name: $crate::__macro_support::concat!( |
5099ac24 FG |
589 | "event ", |
590 | file!(), | |
591 | ":", | |
592 | line!() | |
593 | ), | |
594 | kind: $crate::metadata::Kind::EVENT, | |
3dfed10e | 595 | target: $target, |
5099ac24 FG |
596 | level: $lvl, |
597 | fields: $($fields)* | |
598 | }; | |
f035d41b | 599 | |
5099ac24 | 600 | let enabled = $crate::level_enabled!($lvl) && { |
5869c6ff | 601 | let interest = CALLSITE.interest(); |
5099ac24 FG |
602 | !interest.is_never() && CALLSITE.is_enabled(interest) |
603 | }; | |
604 | if enabled { | |
605 | (|value_set: $crate::field::ValueSet| { | |
606 | $crate::__tracing_log!( | |
607 | target: $target, | |
608 | $lvl, | |
609 | &value_set | |
610 | ); | |
5869c6ff XL |
611 | let meta = CALLSITE.metadata(); |
612 | // event with explicit parent | |
613 | $crate::Event::child_of( | |
614 | $parent, | |
615 | meta, | |
5099ac24 | 616 | &value_set |
5869c6ff | 617 | ); |
5099ac24 FG |
618 | })($crate::valueset!(CALLSITE.metadata().fields(), $($fields)*)); |
619 | } else { | |
620 | $crate::__tracing_log!( | |
621 | target: $target, | |
622 | $lvl, | |
623 | &$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*) | |
624 | ); | |
f035d41b | 625 | } |
5099ac24 | 626 | }); |
f035d41b | 627 | |
3dfed10e | 628 | (target: $target:expr, parent: $parent:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => ( |
f035d41b XL |
629 | $crate::event!( |
630 | target: $target, | |
631 | parent: $parent, | |
632 | $lvl, | |
633 | { message = format_args!($($arg)+), $($fields)* } | |
634 | ) | |
3dfed10e | 635 | ); |
f035d41b XL |
636 | (target: $target:expr, parent: $parent:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => ( |
637 | $crate::event!(target: $target, parent: $parent, $lvl, { $($k).+ = $($fields)* }) | |
638 | ); | |
639 | (target: $target:expr, parent: $parent:expr, $lvl:expr, $($arg:tt)+) => ( | |
640 | $crate::event!(target: $target, parent: $parent, $lvl, { $($arg)+ }) | |
641 | ); | |
642 | (target: $target:expr, $lvl:expr, { $($fields:tt)* } )=> ({ | |
5099ac24 FG |
643 | use $crate::__macro_support::Callsite as _; |
644 | static CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! { | |
ee023bcb | 645 | name: $crate::__macro_support::concat!( |
5099ac24 FG |
646 | "event ", |
647 | file!(), | |
648 | ":", | |
649 | line!() | |
650 | ), | |
651 | kind: $crate::metadata::Kind::EVENT, | |
3dfed10e | 652 | target: $target, |
5099ac24 FG |
653 | level: $lvl, |
654 | fields: $($fields)* | |
655 | }; | |
656 | let enabled = $crate::level_enabled!($lvl) && { | |
5869c6ff | 657 | let interest = CALLSITE.interest(); |
5099ac24 FG |
658 | !interest.is_never() && CALLSITE.is_enabled(interest) |
659 | }; | |
660 | if enabled { | |
661 | (|value_set: $crate::field::ValueSet| { | |
5869c6ff XL |
662 | let meta = CALLSITE.metadata(); |
663 | // event with contextual parent | |
664 | $crate::Event::dispatch( | |
665 | meta, | |
5099ac24 | 666 | &value_set |
5869c6ff | 667 | ); |
5099ac24 FG |
668 | $crate::__tracing_log!( |
669 | target: $target, | |
670 | $lvl, | |
671 | &value_set | |
672 | ); | |
673 | })($crate::valueset!(CALLSITE.metadata().fields(), $($fields)*)); | |
674 | } else { | |
675 | $crate::__tracing_log!( | |
676 | target: $target, | |
677 | $lvl, | |
678 | &$crate::valueset!(CALLSITE.metadata().fields(), $($fields)*) | |
679 | ); | |
f035d41b XL |
680 | } |
681 | }); | |
3dfed10e | 682 | (target: $target:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => ( |
f035d41b XL |
683 | $crate::event!( |
684 | target: $target, | |
685 | $lvl, | |
686 | { message = format_args!($($arg)+), $($fields)* } | |
687 | ) | |
3dfed10e | 688 | ); |
f035d41b XL |
689 | (target: $target:expr, $lvl:expr, $($k:ident).+ = $($fields:tt)* ) => ( |
690 | $crate::event!(target: $target, $lvl, { $($k).+ = $($fields)* }) | |
691 | ); | |
692 | (target: $target:expr, $lvl:expr, $($arg:tt)+ ) => ( | |
693 | $crate::event!(target: $target, $lvl, { $($arg)+ }) | |
694 | ); | |
695 | (parent: $parent:expr, $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => ( | |
696 | $crate::event!( | |
697 | target: module_path!(), | |
698 | parent: $parent, | |
699 | $lvl, | |
700 | { message = format_args!($($arg)+), $($fields)* } | |
701 | ) | |
702 | ); | |
f035d41b XL |
703 | (parent: $parent:expr, $lvl:expr, $($k:ident).+ = $($field:tt)*) => ( |
704 | $crate::event!( | |
705 | target: module_path!(), | |
706 | parent: $parent, | |
707 | $lvl, | |
708 | { $($k).+ = $($field)*} | |
709 | ) | |
710 | ); | |
711 | (parent: $parent:expr, $lvl:expr, ?$($k:ident).+ = $($field:tt)*) => ( | |
712 | $crate::event!( | |
713 | target: module_path!(), | |
714 | parent: $parent, | |
715 | $lvl, | |
716 | { ?$($k).+ = $($field)*} | |
717 | ) | |
718 | ); | |
719 | (parent: $parent:expr, $lvl:expr, %$($k:ident).+ = $($field:tt)*) => ( | |
720 | $crate::event!( | |
721 | target: module_path!(), | |
722 | parent: $parent, | |
723 | $lvl, | |
724 | { %$($k).+ = $($field)*} | |
725 | ) | |
726 | ); | |
727 | (parent: $parent:expr, $lvl:expr, $($k:ident).+, $($field:tt)*) => ( | |
728 | $crate::event!( | |
729 | target: module_path!(), | |
730 | parent: $parent, | |
731 | $lvl, | |
732 | { $($k).+, $($field)*} | |
733 | ) | |
734 | ); | |
735 | (parent: $parent:expr, $lvl:expr, %$($k:ident).+, $($field:tt)*) => ( | |
736 | $crate::event!( | |
737 | target: module_path!(), | |
738 | parent: $parent, | |
739 | $lvl, | |
740 | { %$($k).+, $($field)*} | |
741 | ) | |
742 | ); | |
743 | (parent: $parent:expr, $lvl:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
744 | $crate::event!( | |
745 | target: module_path!(), | |
746 | parent: $parent, | |
747 | $lvl, | |
748 | { ?$($k).+, $($field)*} | |
749 | ) | |
750 | ); | |
751 | (parent: $parent:expr, $lvl:expr, $($arg:tt)+ ) => ( | |
752 | $crate::event!(target: module_path!(), parent: $parent, $lvl, { $($arg)+ }) | |
753 | ); | |
754 | ( $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => ( | |
755 | $crate::event!( | |
756 | target: module_path!(), | |
757 | $lvl, | |
758 | { message = format_args!($($arg)+), $($fields)* } | |
759 | ) | |
760 | ); | |
761 | ( $lvl:expr, { $($fields:tt)* }, $($arg:tt)+ ) => ( | |
762 | $crate::event!( | |
763 | target: module_path!(), | |
764 | $lvl, | |
765 | { message = format_args!($($arg)+), $($fields)* } | |
766 | ) | |
767 | ); | |
768 | ($lvl:expr, $($k:ident).+ = $($field:tt)*) => ( | |
769 | $crate::event!( | |
770 | target: module_path!(), | |
771 | $lvl, | |
772 | { $($k).+ = $($field)*} | |
773 | ) | |
774 | ); | |
775 | ($lvl:expr, $($k:ident).+, $($field:tt)*) => ( | |
776 | $crate::event!( | |
777 | target: module_path!(), | |
778 | $lvl, | |
779 | { $($k).+, $($field)*} | |
780 | ) | |
781 | ); | |
782 | ($lvl:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
783 | $crate::event!( | |
784 | target: module_path!(), | |
785 | $lvl, | |
786 | { ?$($k).+, $($field)*} | |
787 | ) | |
788 | ); | |
789 | ($lvl:expr, %$($k:ident).+, $($field:tt)*) => ( | |
790 | $crate::event!( | |
791 | target: module_path!(), | |
792 | $lvl, | |
793 | { %$($k).+, $($field)*} | |
794 | ) | |
795 | ); | |
796 | ($lvl:expr, ?$($k:ident).+) => ( | |
797 | $crate::event!($lvl, ?$($k).+,) | |
798 | ); | |
799 | ($lvl:expr, %$($k:ident).+) => ( | |
800 | $crate::event!($lvl, %$($k).+,) | |
801 | ); | |
802 | ($lvl:expr, $($k:ident).+) => ( | |
803 | $crate::event!($lvl, $($k).+,) | |
804 | ); | |
805 | ( $lvl:expr, $($arg:tt)+ ) => ( | |
806 | $crate::event!(target: module_path!(), $lvl, { $($arg)+ }) | |
807 | ); | |
808 | } | |
809 | ||
5099ac24 FG |
810 | /// Checks whether a span or event is [enabled] based on the provided [metadata]. |
811 | /// | |
812 | /// [enabled]: crate::Subscriber::enabled | |
813 | /// [metadata]: crate::Metadata | |
814 | /// | |
815 | /// This macro is a specialized tool: it is intended to be used prior | |
816 | /// to an expensive computation required *just* for that event, but | |
817 | /// *cannot* be done as part of an argument to that event, such as | |
818 | /// when multiple events are emitted (e.g., iterating over a collection | |
819 | /// and emitting an event for each item). | |
820 | /// | |
821 | /// # Usage | |
822 | /// | |
823 | /// [Subscribers] can make filtering decisions based all the data included in a | |
824 | /// span or event's [`Metadata`]. This means that it is possible for `enabled!` | |
825 | /// to return a _false positive_ (indicating that something would be enabled | |
826 | /// when it actually would not be) or a _false negative_ (indicating that | |
827 | /// something would be disabled when it would actually be enabled). | |
828 | /// | |
829 | /// [Subscribers]: crate::subscriber::Subscriber | |
830 | /// [`Metadata`]: crate::metadata::Metadata | |
831 | /// | |
832 | /// This occurs when a subscriber is using a _more specific_ filter than the | |
833 | /// metadata provided to the `enabled!` macro. Some situations that can result | |
834 | /// in false positives or false negatives include: | |
835 | /// | |
836 | /// - If a subscriber is using a filter which may enable a span or event based | |
837 | /// on field names, but `enabled!` is invoked without listing field names, | |
838 | /// `enabled!` may return a false negative if a specific field name would | |
839 | /// cause the subscriber to enable something that would otherwise be disabled. | |
840 | /// - If a subscriber is using a filter which enables or disables specific events by | |
841 | /// file path and line number, a particular event may be enabled/disabled | |
842 | /// even if an `enabled!` invocation with the same level, target, and fields | |
843 | /// indicated otherwise. | |
844 | /// - The subscriber can choose to enable _only_ spans or _only_ events, which `enabled` | |
845 | /// will not reflect. | |
846 | /// | |
847 | /// `enabled!()` requires a [level](crate::Level) argument, an optional `target:` | |
848 | /// argument, and an optional set of field names. If the fields are not provided, | |
849 | /// they are considered to be unknown. `enabled!` attempts to match the | |
850 | /// syntax of `event!()` as closely as possible, which can be seen in the | |
851 | /// examples below. | |
852 | /// | |
853 | /// # Examples | |
854 | /// | |
855 | /// If the current subscriber is interested in recording `DEBUG`-level spans and | |
856 | /// events in the current file and module path, this will evaluate to true: | |
857 | /// ```rust | |
858 | /// use tracing::{enabled, Level}; | |
859 | /// | |
860 | /// if enabled!(Level::DEBUG) { | |
861 | /// // some expensive work... | |
862 | /// } | |
863 | /// ``` | |
864 | /// | |
865 | /// If the current subscriber is interested in recording spans and events | |
866 | /// in the current file and module path, with the target "my_crate", and at the | |
867 | /// level `DEBUG`, this will evaluate to true: | |
868 | /// ```rust | |
869 | /// # use tracing::{enabled, Level}; | |
870 | /// if enabled!(target: "my_crate", Level::DEBUG) { | |
871 | /// // some expensive work... | |
872 | /// } | |
873 | /// ``` | |
874 | /// | |
875 | /// If the current subscriber is interested in recording spans and events | |
876 | /// in the current file and module path, with the target "my_crate", at | |
877 | /// the level `DEBUG`, and with a field named "hello", this will evaluate | |
878 | /// to true: | |
879 | /// | |
880 | /// ```rust | |
881 | /// # use tracing::{enabled, Level}; | |
882 | /// if enabled!(target: "my_crate", Level::DEBUG, hello) { | |
883 | /// // some expensive work... | |
884 | /// } | |
885 | /// ``` | |
886 | /// | |
887 | #[macro_export] | |
888 | macro_rules! enabled { | |
889 | (target: $target:expr, $lvl:expr, { $($fields:tt)* } )=> ({ | |
890 | if $crate::level_enabled!($lvl) { | |
891 | use $crate::__macro_support::Callsite as _; | |
892 | static CALLSITE: $crate::__macro_support::MacroCallsite = $crate::callsite2! { | |
ee023bcb | 893 | name: $crate::__macro_support::concat!( |
5099ac24 FG |
894 | "enabled ", |
895 | file!(), | |
896 | ":", | |
897 | line!() | |
898 | ), | |
899 | kind: $crate::metadata::Kind::HINT, | |
900 | target: $target, | |
901 | level: $lvl, | |
902 | fields: $($fields)* | |
903 | }; | |
904 | let interest = CALLSITE.interest(); | |
905 | if !interest.is_never() && CALLSITE.is_enabled(interest) { | |
906 | let meta = CALLSITE.metadata(); | |
907 | $crate::dispatcher::get_default(|current| current.enabled(meta)) | |
908 | } else { | |
909 | false | |
910 | } | |
911 | } else { | |
912 | false | |
913 | } | |
914 | }); | |
915 | // Just target and level | |
916 | (target: $target:expr, $lvl:expr ) => ( | |
917 | $crate::enabled!(target: $target, $lvl, { }) | |
918 | ); | |
919 | ||
920 | // These two cases handle fields with no values | |
921 | (target: $target:expr, $lvl:expr, $($field:tt)*) => ( | |
922 | $crate::enabled!( | |
923 | target: $target, | |
924 | $lvl, | |
925 | { $($field)*} | |
926 | ) | |
927 | ); | |
928 | ($lvl:expr, $($field:tt)*) => ( | |
929 | $crate::enabled!( | |
930 | target: module_path!(), | |
931 | $lvl, | |
932 | { $($field)*} | |
933 | ) | |
934 | ); | |
935 | ||
936 | // Simplest `enabled!` case | |
937 | ( $lvl:expr ) => ( | |
938 | $crate::enabled!(target: module_path!(), $lvl, { }) | |
939 | ); | |
940 | } | |
941 | ||
f035d41b XL |
942 | /// Constructs an event at the trace level. |
943 | /// | |
944 | /// This functions similarly to the [`event!`] macro. See [the top-level | |
945 | /// documentation][lib] for details on the syntax accepted by | |
946 | /// this macro. | |
947 | /// | |
948 | /// [`event!`]: macro.event.html | |
949 | /// [lib]: index.html#using-the-macros | |
950 | /// | |
951 | /// # Examples | |
952 | /// | |
953 | /// ```rust | |
954 | /// use tracing::trace; | |
955 | /// # #[derive(Debug, Copy, Clone)] struct Position { x: f32, y: f32 } | |
956 | /// # impl Position { | |
957 | /// # const ORIGIN: Self = Self { x: 0.0, y: 0.0 }; | |
958 | /// # fn dist(&self, other: Position) -> f32 { | |
959 | /// # let x = (other.x - self.x).exp2(); let y = (self.y - other.y).exp2(); | |
960 | /// # (x + y).sqrt() | |
961 | /// # } | |
962 | /// # } | |
963 | /// # fn main() { | |
964 | /// let pos = Position { x: 3.234, y: -1.223 }; | |
965 | /// let origin_dist = pos.dist(Position::ORIGIN); | |
966 | /// | |
967 | /// trace!(position = ?pos, ?origin_dist); | |
968 | /// trace!( | |
969 | /// target: "app_events", | |
970 | /// position = ?pos, | |
971 | /// "x is {} and y is {}", | |
972 | /// if pos.x >= 0.0 { "positive" } else { "negative" }, | |
973 | /// if pos.y >= 0.0 { "positive" } else { "negative" } | |
974 | /// ); | |
975 | /// # } | |
976 | /// ``` | |
977 | #[macro_export] | |
978 | macro_rules! trace { | |
979 | (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
980 | $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, { $($field)* }, $($arg)*) | |
981 | ); | |
982 | (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => ( | |
983 | $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ }) | |
984 | ); | |
985 | (target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => ( | |
986 | $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ }) | |
987 | ); | |
988 | (target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => ( | |
989 | $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, { $($k).+ $($field)+ }) | |
990 | ); | |
991 | (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => ( | |
992 | $crate::event!(target: $target, parent: $parent, $crate::Level::TRACE, {}, $($arg)+) | |
993 | ); | |
994 | (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => ( | |
995 | $crate::event!( | |
996 | target: module_path!(), | |
997 | parent: $parent, | |
998 | $crate::Level::TRACE, | |
999 | { $($field)+ }, | |
1000 | $($arg)+ | |
1001 | ) | |
1002 | ); | |
1003 | (parent: $parent:expr, $($k:ident).+ = $($field:tt)*) => ( | |
1004 | $crate::event!( | |
1005 | target: module_path!(), | |
1006 | parent: $parent, | |
1007 | $crate::Level::TRACE, | |
1008 | { $($k).+ = $($field)*} | |
1009 | ) | |
1010 | ); | |
1011 | (parent: $parent:expr, ?$($k:ident).+ = $($field:tt)*) => ( | |
1012 | $crate::event!( | |
1013 | target: module_path!(), | |
1014 | parent: $parent, | |
1015 | $crate::Level::TRACE, | |
1016 | { ?$($k).+ = $($field)*} | |
1017 | ) | |
1018 | ); | |
1019 | (parent: $parent:expr, %$($k:ident).+ = $($field:tt)*) => ( | |
1020 | $crate::event!( | |
1021 | target: module_path!(), | |
1022 | parent: $parent, | |
1023 | $crate::Level::TRACE, | |
1024 | { %$($k).+ = $($field)*} | |
1025 | ) | |
1026 | ); | |
1027 | (parent: $parent:expr, $($k:ident).+, $($field:tt)*) => ( | |
1028 | $crate::event!( | |
1029 | target: module_path!(), | |
1030 | parent: $parent, | |
1031 | $crate::Level::TRACE, | |
1032 | { $($k).+, $($field)*} | |
1033 | ) | |
1034 | ); | |
1035 | (parent: $parent:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
1036 | $crate::event!( | |
1037 | target: module_path!(), | |
1038 | parent: $parent, | |
1039 | $crate::Level::TRACE, | |
1040 | { ?$($k).+, $($field)*} | |
1041 | ) | |
1042 | ); | |
1043 | (parent: $parent:expr, %$($k:ident).+, $($field:tt)*) => ( | |
1044 | $crate::event!( | |
1045 | target: module_path!(), | |
1046 | parent: $parent, | |
1047 | $crate::Level::TRACE, | |
1048 | { %$($k).+, $($field)*} | |
1049 | ) | |
1050 | ); | |
1051 | (parent: $parent:expr, $($arg:tt)+) => ( | |
1052 | $crate::event!( | |
1053 | target: module_path!(), | |
1054 | parent: $parent, | |
1055 | $crate::Level::TRACE, | |
1056 | {}, | |
1057 | $($arg)+ | |
1058 | ) | |
1059 | ); | |
1060 | (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1061 | $crate::event!(target: $target, $crate::Level::TRACE, { $($field)* }, $($arg)*) | |
1062 | ); | |
6a06907d XL |
1063 | (target: $target:expr, $($k:ident).+ $($field:tt)* ) => ( |
1064 | $crate::event!(target: $target, $crate::Level::TRACE, { $($k).+ $($field)* }) | |
f035d41b | 1065 | ); |
6a06907d XL |
1066 | (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => ( |
1067 | $crate::event!(target: $target, $crate::Level::TRACE, { ?$($k).+ $($field)* }) | |
f035d41b | 1068 | ); |
6a06907d XL |
1069 | (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => ( |
1070 | $crate::event!(target: $target, $crate::Level::TRACE, { %$($k).+ $($field)* }) | |
f035d41b XL |
1071 | ); |
1072 | (target: $target:expr, $($arg:tt)+ ) => ( | |
1073 | $crate::event!(target: $target, $crate::Level::TRACE, {}, $($arg)+) | |
1074 | ); | |
1075 | ({ $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1076 | $crate::event!( | |
1077 | target: module_path!(), | |
1078 | $crate::Level::TRACE, | |
1079 | { $($field)+ }, | |
1080 | $($arg)+ | |
1081 | ) | |
1082 | ); | |
1083 | ($($k:ident).+ = $($field:tt)*) => ( | |
1084 | $crate::event!( | |
1085 | target: module_path!(), | |
1086 | $crate::Level::TRACE, | |
1087 | { $($k).+ = $($field)*} | |
1088 | ) | |
1089 | ); | |
1090 | ($($k:ident).+, $($field:tt)*) => ( | |
1091 | $crate::event!( | |
1092 | target: module_path!(), | |
1093 | $crate::Level::TRACE, | |
1094 | { $($k).+, $($field)*} | |
1095 | ) | |
1096 | ); | |
1097 | (?$($k:ident).+, $($field:tt)*) => ( | |
1098 | $crate::event!( | |
1099 | target: module_path!(), | |
1100 | $crate::Level::TRACE, | |
1101 | { ?$($k).+, $($field)*} | |
1102 | ) | |
1103 | ); | |
1104 | (%$($k:ident).+, $($field:tt)*) => ( | |
1105 | $crate::event!( | |
1106 | target: module_path!(), | |
1107 | $crate::Level::TRACE, | |
1108 | { %$($k).+, $($field)*} | |
1109 | ) | |
1110 | ); | |
1111 | (?$($k:ident).+) => ( | |
1112 | $crate::event!( | |
1113 | target: module_path!(), | |
1114 | $crate::Level::TRACE, | |
1115 | { ?$($k).+ } | |
1116 | ) | |
1117 | ); | |
1118 | (%$($k:ident).+) => ( | |
1119 | $crate::event!( | |
1120 | target: module_path!(), | |
1121 | $crate::Level::TRACE, | |
1122 | { %$($k).+ } | |
1123 | ) | |
1124 | ); | |
1125 | ($($k:ident).+) => ( | |
1126 | $crate::event!( | |
1127 | target: module_path!(), | |
1128 | $crate::Level::TRACE, | |
1129 | { $($k).+ } | |
1130 | ) | |
1131 | ); | |
1132 | ($($arg:tt)+) => ( | |
1133 | $crate::event!( | |
1134 | target: module_path!(), | |
1135 | $crate::Level::TRACE, | |
1136 | {}, | |
1137 | $($arg)+ | |
1138 | ) | |
1139 | ); | |
1140 | } | |
1141 | ||
1142 | /// Constructs an event at the debug level. | |
1143 | /// | |
1144 | /// This functions similarly to the [`event!`] macro. See [the top-level | |
1145 | /// documentation][lib] for details on the syntax accepted by | |
1146 | /// this macro. | |
1147 | /// | |
1148 | /// [`event!`]: macro.event.html | |
1149 | /// [lib]: index.html#using-the-macros | |
1150 | /// | |
1151 | /// # Examples | |
1152 | /// | |
1153 | /// ```rust | |
1154 | /// use tracing::debug; | |
1155 | /// # fn main() { | |
1156 | /// # #[derive(Debug)] struct Position { x: f32, y: f32 } | |
1157 | /// | |
1158 | /// let pos = Position { x: 3.234, y: -1.223 }; | |
1159 | /// | |
1160 | /// debug!(?pos.x, ?pos.y); | |
1161 | /// debug!(target: "app_events", position = ?pos, "New position"); | |
1162 | /// # } | |
1163 | /// ``` | |
1164 | #[macro_export] | |
1165 | macro_rules! debug { | |
1166 | (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1167 | $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, { $($field)* }, $($arg)*) | |
1168 | ); | |
1169 | (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => ( | |
1170 | $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ }) | |
1171 | ); | |
1172 | (target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => ( | |
1173 | $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ }) | |
1174 | ); | |
1175 | (target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => ( | |
1176 | $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, { $($k).+ $($field)+ }) | |
1177 | ); | |
1178 | (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => ( | |
1179 | $crate::event!(target: $target, parent: $parent, $crate::Level::DEBUG, {}, $($arg)+) | |
1180 | ); | |
1181 | (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1182 | $crate::event!( | |
1183 | target: module_path!(), | |
1184 | parent: $parent, | |
1185 | $crate::Level::DEBUG, | |
1186 | { $($field)+ }, | |
1187 | $($arg)+ | |
1188 | ) | |
1189 | ); | |
1190 | (parent: $parent:expr, $($k:ident).+ = $($field:tt)*) => ( | |
1191 | $crate::event!( | |
1192 | target: module_path!(), | |
1193 | parent: $parent, | |
1194 | $crate::Level::DEBUG, | |
1195 | { $($k).+ = $($field)*} | |
1196 | ) | |
1197 | ); | |
1198 | (parent: $parent:expr, ?$($k:ident).+ = $($field:tt)*) => ( | |
1199 | $crate::event!( | |
1200 | target: module_path!(), | |
1201 | parent: $parent, | |
1202 | $crate::Level::DEBUG, | |
1203 | { ?$($k).+ = $($field)*} | |
1204 | ) | |
1205 | ); | |
1206 | (parent: $parent:expr, %$($k:ident).+ = $($field:tt)*) => ( | |
1207 | $crate::event!( | |
1208 | target: module_path!(), | |
1209 | parent: $parent, | |
1210 | $crate::Level::DEBUG, | |
1211 | { %$($k).+ = $($field)*} | |
1212 | ) | |
1213 | ); | |
1214 | (parent: $parent:expr, $($k:ident).+, $($field:tt)*) => ( | |
1215 | $crate::event!( | |
1216 | target: module_path!(), | |
1217 | parent: $parent, | |
1218 | $crate::Level::DEBUG, | |
1219 | { $($k).+, $($field)*} | |
1220 | ) | |
1221 | ); | |
1222 | (parent: $parent:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
1223 | $crate::event!( | |
1224 | target: module_path!(), | |
1225 | parent: $parent, | |
1226 | $crate::Level::DEBUG, | |
1227 | { ?$($k).+, $($field)*} | |
1228 | ) | |
1229 | ); | |
1230 | (parent: $parent:expr, %$($k:ident).+, $($field:tt)*) => ( | |
1231 | $crate::event!( | |
1232 | target: module_path!(), | |
1233 | parent: $parent, | |
1234 | $crate::Level::DEBUG, | |
1235 | { %$($k).+, $($field)*} | |
1236 | ) | |
1237 | ); | |
1238 | (parent: $parent:expr, $($arg:tt)+) => ( | |
1239 | $crate::event!( | |
1240 | target: module_path!(), | |
1241 | parent: $parent, | |
1242 | $crate::Level::DEBUG, | |
1243 | {}, | |
1244 | $($arg)+ | |
1245 | ) | |
1246 | ); | |
1247 | (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1248 | $crate::event!(target: $target, $crate::Level::DEBUG, { $($field)* }, $($arg)*) | |
1249 | ); | |
6a06907d XL |
1250 | (target: $target:expr, $($k:ident).+ $($field:tt)* ) => ( |
1251 | $crate::event!(target: $target, $crate::Level::DEBUG, { $($k).+ $($field)* }) | |
f035d41b | 1252 | ); |
6a06907d XL |
1253 | (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => ( |
1254 | $crate::event!(target: $target, $crate::Level::DEBUG, { ?$($k).+ $($field)* }) | |
f035d41b | 1255 | ); |
6a06907d XL |
1256 | (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => ( |
1257 | $crate::event!(target: $target, $crate::Level::DEBUG, { %$($k).+ $($field)* }) | |
f035d41b XL |
1258 | ); |
1259 | (target: $target:expr, $($arg:tt)+ ) => ( | |
1260 | $crate::event!(target: $target, $crate::Level::DEBUG, {}, $($arg)+) | |
1261 | ); | |
1262 | ({ $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1263 | $crate::event!( | |
1264 | target: module_path!(), | |
1265 | $crate::Level::DEBUG, | |
1266 | { $($field)+ }, | |
1267 | $($arg)+ | |
1268 | ) | |
1269 | ); | |
1270 | ($($k:ident).+ = $($field:tt)*) => ( | |
1271 | $crate::event!( | |
1272 | target: module_path!(), | |
1273 | $crate::Level::DEBUG, | |
1274 | { $($k).+ = $($field)*} | |
1275 | ) | |
1276 | ); | |
1277 | (?$($k:ident).+ = $($field:tt)*) => ( | |
1278 | $crate::event!( | |
1279 | target: module_path!(), | |
1280 | $crate::Level::DEBUG, | |
1281 | { ?$($k).+ = $($field)*} | |
1282 | ) | |
1283 | ); | |
1284 | (%$($k:ident).+ = $($field:tt)*) => ( | |
1285 | $crate::event!( | |
1286 | target: module_path!(), | |
1287 | $crate::Level::DEBUG, | |
1288 | { %$($k).+ = $($field)*} | |
1289 | ) | |
1290 | ); | |
1291 | ($($k:ident).+, $($field:tt)*) => ( | |
1292 | $crate::event!( | |
1293 | target: module_path!(), | |
1294 | $crate::Level::DEBUG, | |
1295 | { $($k).+, $($field)*} | |
1296 | ) | |
1297 | ); | |
1298 | (?$($k:ident).+, $($field:tt)*) => ( | |
1299 | $crate::event!( | |
1300 | target: module_path!(), | |
1301 | $crate::Level::DEBUG, | |
1302 | { ?$($k).+, $($field)*} | |
1303 | ) | |
1304 | ); | |
1305 | (%$($k:ident).+, $($field:tt)*) => ( | |
1306 | $crate::event!( | |
1307 | target: module_path!(), | |
1308 | $crate::Level::DEBUG, | |
1309 | { %$($k).+, $($field)*} | |
1310 | ) | |
1311 | ); | |
1312 | (?$($k:ident).+) => ( | |
1313 | $crate::event!( | |
1314 | target: module_path!(), | |
1315 | $crate::Level::DEBUG, | |
1316 | { ?$($k).+ } | |
1317 | ) | |
1318 | ); | |
1319 | (%$($k:ident).+) => ( | |
1320 | $crate::event!( | |
1321 | target: module_path!(), | |
1322 | $crate::Level::DEBUG, | |
1323 | { %$($k).+ } | |
1324 | ) | |
1325 | ); | |
1326 | ($($k:ident).+) => ( | |
1327 | $crate::event!( | |
1328 | target: module_path!(), | |
1329 | $crate::Level::DEBUG, | |
1330 | { $($k).+ } | |
1331 | ) | |
1332 | ); | |
1333 | ($($arg:tt)+) => ( | |
1334 | $crate::event!( | |
1335 | target: module_path!(), | |
1336 | $crate::Level::DEBUG, | |
1337 | {}, | |
1338 | $($arg)+ | |
1339 | ) | |
1340 | ); | |
1341 | } | |
1342 | ||
1343 | /// Constructs an event at the info level. | |
1344 | /// | |
1345 | /// This functions similarly to the [`event!`] macro. See [the top-level | |
1346 | /// documentation][lib] for details on the syntax accepted by | |
1347 | /// this macro. | |
1348 | /// | |
1349 | /// [`event!`]: macro.event.html | |
1350 | /// [lib]: index.html#using-the-macros | |
1351 | /// | |
1352 | /// # Examples | |
1353 | /// | |
1354 | /// ```rust | |
1355 | /// use tracing::info; | |
1356 | /// # // this is so the test will still work in no-std mode | |
1357 | /// # #[derive(Debug)] | |
1358 | /// # pub struct Ipv4Addr; | |
1359 | /// # impl Ipv4Addr { fn new(o1: u8, o2: u8, o3: u8, o4: u8) -> Self { Self } } | |
1360 | /// # fn main() { | |
1361 | /// # struct Connection { port: u32, speed: f32 } | |
1362 | /// use tracing::field; | |
1363 | /// | |
1364 | /// let addr = Ipv4Addr::new(127, 0, 0, 1); | |
1365 | /// let conn = Connection { port: 40, speed: 3.20 }; | |
1366 | /// | |
1367 | /// info!(conn.port, "connected to {:?}", addr); | |
1368 | /// info!( | |
1369 | /// target: "connection_events", | |
1370 | /// ip = ?addr, | |
1371 | /// conn.port, | |
1372 | /// ?conn.speed, | |
1373 | /// ); | |
1374 | /// # } | |
1375 | /// ``` | |
1376 | #[macro_export] | |
1377 | macro_rules! info { | |
1378 | (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1379 | $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, { $($field)* }, $($arg)*) | |
1380 | ); | |
1381 | (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => ( | |
1382 | $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ }) | |
1383 | ); | |
1384 | (target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => ( | |
1385 | $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ }) | |
1386 | ); | |
1387 | (target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => ( | |
1388 | $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, { $($k).+ $($field)+ }) | |
1389 | ); | |
1390 | (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => ( | |
1391 | $crate::event!(target: $target, parent: $parent, $crate::Level::INFO, {}, $($arg)+) | |
1392 | ); | |
1393 | (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1394 | $crate::event!( | |
1395 | target: module_path!(), | |
1396 | parent: $parent, | |
1397 | $crate::Level::INFO, | |
1398 | { $($field)+ }, | |
1399 | $($arg)+ | |
1400 | ) | |
1401 | ); | |
1402 | (parent: $parent:expr, $($k:ident).+ = $($field:tt)*) => ( | |
1403 | $crate::event!( | |
1404 | target: module_path!(), | |
1405 | parent: $parent, | |
1406 | $crate::Level::INFO, | |
1407 | { $($k).+ = $($field)*} | |
1408 | ) | |
1409 | ); | |
1410 | (parent: $parent:expr, ?$($k:ident).+ = $($field:tt)*) => ( | |
1411 | $crate::event!( | |
1412 | target: module_path!(), | |
1413 | parent: $parent, | |
1414 | $crate::Level::INFO, | |
1415 | { ?$($k).+ = $($field)*} | |
1416 | ) | |
1417 | ); | |
1418 | (parent: $parent:expr, %$($k:ident).+ = $($field:tt)*) => ( | |
1419 | $crate::event!( | |
1420 | target: module_path!(), | |
1421 | parent: $parent, | |
1422 | $crate::Level::INFO, | |
1423 | { %$($k).+ = $($field)*} | |
1424 | ) | |
1425 | ); | |
1426 | (parent: $parent:expr, $($k:ident).+, $($field:tt)*) => ( | |
1427 | $crate::event!( | |
1428 | target: module_path!(), | |
1429 | parent: $parent, | |
1430 | $crate::Level::INFO, | |
1431 | { $($k).+, $($field)*} | |
1432 | ) | |
1433 | ); | |
1434 | (parent: $parent:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
1435 | $crate::event!( | |
1436 | target: module_path!(), | |
1437 | parent: $parent, | |
1438 | $crate::Level::INFO, | |
1439 | { ?$($k).+, $($field)*} | |
1440 | ) | |
1441 | ); | |
1442 | (parent: $parent:expr, %$($k:ident).+, $($field:tt)*) => ( | |
1443 | $crate::event!( | |
1444 | target: module_path!(), | |
1445 | parent: $parent, | |
1446 | $crate::Level::INFO, | |
1447 | { %$($k).+, $($field)*} | |
1448 | ) | |
1449 | ); | |
1450 | (parent: $parent:expr, $($arg:tt)+) => ( | |
1451 | $crate::event!( | |
1452 | target: module_path!(), | |
1453 | parent: $parent, | |
1454 | $crate::Level::INFO, | |
1455 | {}, | |
1456 | $($arg)+ | |
1457 | ) | |
1458 | ); | |
1459 | (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1460 | $crate::event!(target: $target, $crate::Level::INFO, { $($field)* }, $($arg)*) | |
1461 | ); | |
6a06907d XL |
1462 | (target: $target:expr, $($k:ident).+ $($field:tt)* ) => ( |
1463 | $crate::event!(target: $target, $crate::Level::INFO, { $($k).+ $($field)* }) | |
f035d41b | 1464 | ); |
6a06907d XL |
1465 | (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => ( |
1466 | $crate::event!(target: $target, $crate::Level::INFO, { ?$($k).+ $($field)* }) | |
f035d41b | 1467 | ); |
6a06907d XL |
1468 | (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => ( |
1469 | $crate::event!(target: $target, $crate::Level::INFO, { $($k).+ $($field)* }) | |
f035d41b XL |
1470 | ); |
1471 | (target: $target:expr, $($arg:tt)+ ) => ( | |
1472 | $crate::event!(target: $target, $crate::Level::INFO, {}, $($arg)+) | |
1473 | ); | |
1474 | ({ $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1475 | $crate::event!( | |
1476 | target: module_path!(), | |
1477 | $crate::Level::INFO, | |
1478 | { $($field)+ }, | |
1479 | $($arg)+ | |
1480 | ) | |
1481 | ); | |
1482 | ($($k:ident).+ = $($field:tt)*) => ( | |
1483 | $crate::event!( | |
1484 | target: module_path!(), | |
1485 | $crate::Level::INFO, | |
1486 | { $($k).+ = $($field)*} | |
1487 | ) | |
1488 | ); | |
1489 | (?$($k:ident).+ = $($field:tt)*) => ( | |
1490 | $crate::event!( | |
1491 | target: module_path!(), | |
1492 | $crate::Level::INFO, | |
1493 | { ?$($k).+ = $($field)*} | |
1494 | ) | |
1495 | ); | |
1496 | (%$($k:ident).+ = $($field:tt)*) => ( | |
1497 | $crate::event!( | |
1498 | target: module_path!(), | |
6a06907d | 1499 | $crate::Level::INFO, |
f035d41b XL |
1500 | { %$($k).+ = $($field)*} |
1501 | ) | |
1502 | ); | |
1503 | ($($k:ident).+, $($field:tt)*) => ( | |
1504 | $crate::event!( | |
1505 | target: module_path!(), | |
1506 | $crate::Level::INFO, | |
1507 | { $($k).+, $($field)*} | |
1508 | ) | |
1509 | ); | |
1510 | (?$($k:ident).+, $($field:tt)*) => ( | |
1511 | $crate::event!( | |
1512 | target: module_path!(), | |
1513 | $crate::Level::INFO, | |
1514 | { ?$($k).+, $($field)*} | |
1515 | ) | |
1516 | ); | |
1517 | (%$($k:ident).+, $($field:tt)*) => ( | |
1518 | $crate::event!( | |
1519 | target: module_path!(), | |
1520 | $crate::Level::INFO, | |
1521 | { %$($k).+, $($field)*} | |
1522 | ) | |
1523 | ); | |
1524 | (?$($k:ident).+) => ( | |
1525 | $crate::event!( | |
1526 | target: module_path!(), | |
1527 | $crate::Level::INFO, | |
1528 | { ?$($k).+ } | |
1529 | ) | |
1530 | ); | |
1531 | (%$($k:ident).+) => ( | |
1532 | $crate::event!( | |
1533 | target: module_path!(), | |
1534 | $crate::Level::INFO, | |
1535 | { %$($k).+ } | |
1536 | ) | |
1537 | ); | |
1538 | ($($k:ident).+) => ( | |
1539 | $crate::event!( | |
1540 | target: module_path!(), | |
1541 | $crate::Level::INFO, | |
1542 | { $($k).+ } | |
1543 | ) | |
1544 | ); | |
1545 | ($($arg:tt)+) => ( | |
1546 | $crate::event!( | |
1547 | target: module_path!(), | |
1548 | $crate::Level::INFO, | |
1549 | {}, | |
1550 | $($arg)+ | |
1551 | ) | |
1552 | ); | |
1553 | } | |
1554 | ||
1555 | /// Constructs an event at the warn level. | |
1556 | /// | |
1557 | /// This functions similarly to the [`event!`] macro. See [the top-level | |
1558 | /// documentation][lib] for details on the syntax accepted by | |
1559 | /// this macro. | |
1560 | /// | |
1561 | /// [`event!`]: macro.event.html | |
1562 | /// [lib]: index.html#using-the-macros | |
1563 | /// | |
1564 | /// # Examples | |
1565 | /// | |
1566 | /// ```rust | |
1567 | /// use tracing::warn; | |
1568 | /// # fn main() { | |
1569 | /// | |
1570 | /// let warn_description = "Invalid Input"; | |
1571 | /// let input = &[0x27, 0x45]; | |
1572 | /// | |
1573 | /// warn!(?input, warning = warn_description); | |
1574 | /// warn!( | |
1575 | /// target: "input_events", | |
1576 | /// warning = warn_description, | |
1577 | /// "Received warning for input: {:?}", input, | |
1578 | /// ); | |
1579 | /// # } | |
1580 | /// ``` | |
1581 | #[macro_export] | |
1582 | macro_rules! warn { | |
1583 | (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1584 | $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, { $($field)* }, $($arg)*) | |
1585 | ); | |
1586 | (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => ( | |
1587 | $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ }) | |
1588 | ); | |
1589 | (target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => ( | |
1590 | $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ }) | |
1591 | ); | |
1592 | (target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => ( | |
1593 | $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, { $($k).+ $($field)+ }) | |
1594 | ); | |
1595 | (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => ( | |
1596 | $crate::event!(target: $target, parent: $parent, $crate::Level::WARN, {}, $($arg)+) | |
1597 | ); | |
1598 | (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1599 | $crate::event!( | |
1600 | target: module_path!(), | |
1601 | parent: $parent, | |
1602 | $crate::Level::WARN, | |
1603 | { $($field)+ }, | |
1604 | $($arg)+ | |
1605 | ) | |
1606 | ); | |
1607 | (parent: $parent:expr, $($k:ident).+ = $($field:tt)*) => ( | |
1608 | $crate::event!( | |
1609 | target: module_path!(), | |
1610 | parent: $parent, | |
1611 | $crate::Level::WARN, | |
1612 | { $($k).+ = $($field)*} | |
1613 | ) | |
1614 | ); | |
1615 | (parent: $parent:expr, ?$($k:ident).+ = $($field:tt)*) => ( | |
1616 | $crate::event!( | |
1617 | target: module_path!(), | |
1618 | parent: $parent, | |
1619 | $crate::Level::WARN, | |
1620 | { ?$($k).+ = $($field)*} | |
1621 | ) | |
1622 | ); | |
1623 | (parent: $parent:expr, %$($k:ident).+ = $($field:tt)*) => ( | |
1624 | $crate::event!( | |
1625 | target: module_path!(), | |
1626 | parent: $parent, | |
1627 | $crate::Level::WARN, | |
1628 | { %$($k).+ = $($field)*} | |
1629 | ) | |
1630 | ); | |
1631 | (parent: $parent:expr, $($k:ident).+, $($field:tt)*) => ( | |
1632 | $crate::event!( | |
1633 | target: module_path!(), | |
1634 | parent: $parent, | |
1635 | $crate::Level::WARN, | |
1636 | { $($k).+, $($field)*} | |
1637 | ) | |
1638 | ); | |
1639 | (parent: $parent:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
1640 | $crate::event!( | |
1641 | target: module_path!(), | |
1642 | parent: $parent, | |
1643 | $crate::Level::WARN, | |
1644 | { ?$($k).+, $($field)*} | |
1645 | ) | |
1646 | ); | |
1647 | (parent: $parent:expr, %$($k:ident).+, $($field:tt)*) => ( | |
1648 | $crate::event!( | |
1649 | target: module_path!(), | |
1650 | parent: $parent, | |
1651 | $crate::Level::WARN, | |
1652 | { %$($k).+, $($field)*} | |
1653 | ) | |
1654 | ); | |
1655 | (parent: $parent:expr, $($arg:tt)+) => ( | |
1656 | $crate::event!( | |
1657 | target: module_path!(), | |
1658 | parent: $parent, | |
1659 | $crate::Level::WARN, | |
1660 | {}, | |
1661 | $($arg)+ | |
1662 | ) | |
1663 | ); | |
1664 | (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1665 | $crate::event!(target: $target, $crate::Level::WARN, { $($field)* }, $($arg)*) | |
1666 | ); | |
6a06907d XL |
1667 | (target: $target:expr, $($k:ident).+ $($field:tt)* ) => ( |
1668 | $crate::event!(target: $target, $crate::Level::WARN, { $($k).+ $($field)* }) | |
f035d41b | 1669 | ); |
6a06907d XL |
1670 | (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => ( |
1671 | $crate::event!(target: $target, $crate::Level::WARN, { ?$($k).+ $($field)* }) | |
f035d41b | 1672 | ); |
6a06907d XL |
1673 | (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => ( |
1674 | $crate::event!(target: $target, $crate::Level::WARN, { %$($k).+ $($field)* }) | |
f035d41b XL |
1675 | ); |
1676 | (target: $target:expr, $($arg:tt)+ ) => ( | |
1677 | $crate::event!(target: $target, $crate::Level::WARN, {}, $($arg)+) | |
1678 | ); | |
1679 | ({ $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1680 | $crate::event!( | |
1681 | target: module_path!(), | |
1682 | $crate::Level::WARN, | |
1683 | { $($field)+ }, | |
1684 | $($arg)+ | |
1685 | ) | |
1686 | ); | |
1687 | ($($k:ident).+ = $($field:tt)*) => ( | |
1688 | $crate::event!( | |
1689 | target: module_path!(), | |
1690 | $crate::Level::WARN, | |
1691 | { $($k).+ = $($field)*} | |
1692 | ) | |
1693 | ); | |
1694 | (?$($k:ident).+ = $($field:tt)*) => ( | |
1695 | $crate::event!( | |
1696 | target: module_path!(), | |
1697 | $crate::Level::WARN, | |
1698 | { ?$($k).+ = $($field)*} | |
1699 | ) | |
1700 | ); | |
1701 | (%$($k:ident).+ = $($field:tt)*) => ( | |
1702 | $crate::event!( | |
1703 | target: module_path!(), | |
ee023bcb | 1704 | $crate::Level::WARN, |
f035d41b XL |
1705 | { %$($k).+ = $($field)*} |
1706 | ) | |
1707 | ); | |
1708 | ($($k:ident).+, $($field:tt)*) => ( | |
1709 | $crate::event!( | |
1710 | target: module_path!(), | |
1711 | $crate::Level::WARN, | |
1712 | { $($k).+, $($field)*} | |
1713 | ) | |
1714 | ); | |
1715 | (?$($k:ident).+, $($field:tt)*) => ( | |
1716 | $crate::event!( | |
1717 | target: module_path!(), | |
1718 | $crate::Level::WARN, | |
1719 | { ?$($k).+, $($field)*} | |
1720 | ) | |
1721 | ); | |
1722 | (%$($k:ident).+, $($field:tt)*) => ( | |
1723 | $crate::event!( | |
1724 | target: module_path!(), | |
1725 | $crate::Level::WARN, | |
1726 | { %$($k).+, $($field)*} | |
1727 | ) | |
1728 | ); | |
1729 | (?$($k:ident).+) => ( | |
1730 | $crate::event!( | |
1731 | target: module_path!(), | |
1732 | $crate::Level::WARN, | |
1733 | { ?$($k).+ } | |
1734 | ) | |
1735 | ); | |
1736 | (%$($k:ident).+) => ( | |
1737 | $crate::event!( | |
1738 | target: module_path!(), | |
1739 | $crate::Level::WARN, | |
1740 | { %$($k).+ } | |
1741 | ) | |
1742 | ); | |
1743 | ($($k:ident).+) => ( | |
1744 | $crate::event!( | |
1745 | target: module_path!(), | |
1746 | $crate::Level::WARN, | |
1747 | { $($k).+ } | |
1748 | ) | |
1749 | ); | |
1750 | ($($arg:tt)+) => ( | |
1751 | $crate::event!( | |
1752 | target: module_path!(), | |
1753 | $crate::Level::WARN, | |
1754 | {}, | |
1755 | $($arg)+ | |
1756 | ) | |
1757 | ); | |
1758 | } | |
1759 | ||
1760 | /// Constructs an event at the error level. | |
1761 | /// | |
1762 | /// This functions similarly to the [`event!`] macro. See [the top-level | |
1763 | /// documentation][lib] for details on the syntax accepted by | |
1764 | /// this macro. | |
1765 | /// | |
1766 | /// [`event!`]: macro.event.html | |
1767 | /// [lib]: index.html#using-the-macros | |
1768 | /// | |
1769 | /// # Examples | |
1770 | /// | |
1771 | /// ```rust | |
1772 | /// use tracing::error; | |
1773 | /// # fn main() { | |
1774 | /// | |
1775 | /// let (err_info, port) = ("No connection", 22); | |
1776 | /// | |
1777 | /// error!(port, error = %err_info); | |
1778 | /// error!(target: "app_events", "App Error: {}", err_info); | |
1779 | /// error!({ info = err_info }, "error on port: {}", port); | |
1780 | /// # } | |
1781 | /// ``` | |
1782 | #[macro_export] | |
1783 | macro_rules! error { | |
1784 | (target: $target:expr, parent: $parent:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1785 | $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, { $($field)* }, $($arg)*) | |
1786 | ); | |
1787 | (target: $target:expr, parent: $parent:expr, $($k:ident).+ $($field:tt)+ ) => ( | |
1788 | $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ }) | |
1789 | ); | |
1790 | (target: $target:expr, parent: $parent:expr, ?$($k:ident).+ $($field:tt)+ ) => ( | |
1791 | $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ }) | |
1792 | ); | |
1793 | (target: $target:expr, parent: $parent:expr, %$($k:ident).+ $($field:tt)+ ) => ( | |
1794 | $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, { $($k).+ $($field)+ }) | |
1795 | ); | |
1796 | (target: $target:expr, parent: $parent:expr, $($arg:tt)+ ) => ( | |
1797 | $crate::event!(target: $target, parent: $parent, $crate::Level::ERROR, {}, $($arg)+) | |
1798 | ); | |
1799 | (parent: $parent:expr, { $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1800 | $crate::event!( | |
1801 | target: module_path!(), | |
1802 | parent: $parent, | |
1803 | $crate::Level::ERROR, | |
1804 | { $($field)+ }, | |
1805 | $($arg)+ | |
1806 | ) | |
1807 | ); | |
1808 | (parent: $parent:expr, $($k:ident).+ = $($field:tt)*) => ( | |
1809 | $crate::event!( | |
1810 | target: module_path!(), | |
1811 | parent: $parent, | |
1812 | $crate::Level::ERROR, | |
1813 | { $($k).+ = $($field)*} | |
1814 | ) | |
1815 | ); | |
1816 | (parent: $parent:expr, ?$($k:ident).+ = $($field:tt)*) => ( | |
1817 | $crate::event!( | |
1818 | target: module_path!(), | |
1819 | parent: $parent, | |
1820 | $crate::Level::ERROR, | |
1821 | { ?$($k).+ = $($field)*} | |
1822 | ) | |
1823 | ); | |
1824 | (parent: $parent:expr, %$($k:ident).+ = $($field:tt)*) => ( | |
1825 | $crate::event!( | |
1826 | target: module_path!(), | |
1827 | parent: $parent, | |
1828 | $crate::Level::ERROR, | |
1829 | { %$($k).+ = $($field)*} | |
1830 | ) | |
1831 | ); | |
1832 | (parent: $parent:expr, $($k:ident).+, $($field:tt)*) => ( | |
1833 | $crate::event!( | |
1834 | target: module_path!(), | |
1835 | parent: $parent, | |
1836 | $crate::Level::ERROR, | |
1837 | { $($k).+, $($field)*} | |
1838 | ) | |
1839 | ); | |
1840 | (parent: $parent:expr, ?$($k:ident).+, $($field:tt)*) => ( | |
1841 | $crate::event!( | |
1842 | target: module_path!(), | |
1843 | parent: $parent, | |
1844 | $crate::Level::ERROR, | |
1845 | { ?$($k).+, $($field)*} | |
1846 | ) | |
1847 | ); | |
1848 | (parent: $parent:expr, %$($k:ident).+, $($field:tt)*) => ( | |
1849 | $crate::event!( | |
1850 | target: module_path!(), | |
1851 | parent: $parent, | |
1852 | $crate::Level::ERROR, | |
1853 | { %$($k).+, $($field)*} | |
1854 | ) | |
1855 | ); | |
1856 | (parent: $parent:expr, $($arg:tt)+) => ( | |
1857 | $crate::event!( | |
1858 | target: module_path!(), | |
1859 | parent: $parent, | |
1860 | $crate::Level::ERROR, | |
1861 | {}, | |
1862 | $($arg)+ | |
1863 | ) | |
1864 | ); | |
1865 | (target: $target:expr, { $($field:tt)* }, $($arg:tt)* ) => ( | |
1866 | $crate::event!(target: $target, $crate::Level::ERROR, { $($field)* }, $($arg)*) | |
1867 | ); | |
6a06907d XL |
1868 | (target: $target:expr, $($k:ident).+ $($field:tt)* ) => ( |
1869 | $crate::event!(target: $target, $crate::Level::ERROR, { $($k).+ $($field)* }) | |
f035d41b | 1870 | ); |
6a06907d XL |
1871 | (target: $target:expr, ?$($k:ident).+ $($field:tt)* ) => ( |
1872 | $crate::event!(target: $target, $crate::Level::ERROR, { ?$($k).+ $($field)* }) | |
f035d41b | 1873 | ); |
6a06907d XL |
1874 | (target: $target:expr, %$($k:ident).+ $($field:tt)* ) => ( |
1875 | $crate::event!(target: $target, $crate::Level::ERROR, { %$($k).+ $($field)* }) | |
f035d41b XL |
1876 | ); |
1877 | (target: $target:expr, $($arg:tt)+ ) => ( | |
1878 | $crate::event!(target: $target, $crate::Level::ERROR, {}, $($arg)+) | |
1879 | ); | |
1880 | ({ $($field:tt)+ }, $($arg:tt)+ ) => ( | |
1881 | $crate::event!( | |
1882 | target: module_path!(), | |
1883 | $crate::Level::ERROR, | |
1884 | { $($field)+ }, | |
1885 | $($arg)+ | |
1886 | ) | |
1887 | ); | |
1888 | ($($k:ident).+ = $($field:tt)*) => ( | |
1889 | $crate::event!( | |
1890 | target: module_path!(), | |
1891 | $crate::Level::ERROR, | |
1892 | { $($k).+ = $($field)*} | |
1893 | ) | |
1894 | ); | |
1895 | (?$($k:ident).+ = $($field:tt)*) => ( | |
1896 | $crate::event!( | |
1897 | target: module_path!(), | |
1898 | $crate::Level::ERROR, | |
1899 | { ?$($k).+ = $($field)*} | |
1900 | ) | |
1901 | ); | |
1902 | (%$($k:ident).+ = $($field:tt)*) => ( | |
1903 | $crate::event!( | |
1904 | target: module_path!(), | |
6a06907d | 1905 | $crate::Level::ERROR, |
f035d41b XL |
1906 | { %$($k).+ = $($field)*} |
1907 | ) | |
1908 | ); | |
1909 | ($($k:ident).+, $($field:tt)*) => ( | |
1910 | $crate::event!( | |
1911 | target: module_path!(), | |
1912 | $crate::Level::ERROR, | |
1913 | { $($k).+, $($field)*} | |
1914 | ) | |
1915 | ); | |
1916 | (?$($k:ident).+, $($field:tt)*) => ( | |
1917 | $crate::event!( | |
1918 | target: module_path!(), | |
1919 | $crate::Level::ERROR, | |
1920 | { ?$($k).+, $($field)*} | |
1921 | ) | |
1922 | ); | |
1923 | (%$($k:ident).+, $($field:tt)*) => ( | |
1924 | $crate::event!( | |
1925 | target: module_path!(), | |
1926 | $crate::Level::ERROR, | |
1927 | { %$($k).+, $($field)*} | |
1928 | ) | |
1929 | ); | |
1930 | (?$($k:ident).+) => ( | |
1931 | $crate::event!( | |
1932 | target: module_path!(), | |
1933 | $crate::Level::ERROR, | |
1934 | { ?$($k).+ } | |
1935 | ) | |
1936 | ); | |
1937 | (%$($k:ident).+) => ( | |
1938 | $crate::event!( | |
1939 | target: module_path!(), | |
1940 | $crate::Level::ERROR, | |
1941 | { %$($k).+ } | |
1942 | ) | |
1943 | ); | |
1944 | ($($k:ident).+) => ( | |
1945 | $crate::event!( | |
1946 | target: module_path!(), | |
1947 | $crate::Level::ERROR, | |
1948 | { $($k).+ } | |
1949 | ) | |
1950 | ); | |
1951 | ($($arg:tt)+) => ( | |
1952 | $crate::event!( | |
1953 | target: module_path!(), | |
1954 | $crate::Level::ERROR, | |
1955 | {}, | |
1956 | $($arg)+ | |
1957 | ) | |
1958 | ); | |
1959 | } | |
1960 | ||
1961 | /// Constructs a new static callsite for a span or event. | |
1962 | #[doc(hidden)] | |
1963 | #[macro_export] | |
1964 | macro_rules! callsite { | |
1965 | (name: $name:expr, kind: $kind:expr, fields: $($fields:tt)*) => {{ | |
1966 | $crate::callsite! { | |
1967 | name: $name, | |
1968 | kind: $kind, | |
1969 | target: module_path!(), | |
1970 | level: $crate::Level::TRACE, | |
1971 | fields: $($fields)* | |
1972 | } | |
1973 | }}; | |
1974 | ( | |
1975 | name: $name:expr, | |
1976 | kind: $kind:expr, | |
1977 | level: $lvl:expr, | |
1978 | fields: $($fields:tt)* | |
1979 | ) => {{ | |
1980 | $crate::callsite! { | |
1981 | name: $name, | |
1982 | kind: $kind, | |
1983 | target: module_path!(), | |
1984 | level: $lvl, | |
1985 | fields: $($fields)* | |
1986 | } | |
1987 | }}; | |
1988 | ( | |
1989 | name: $name:expr, | |
1990 | kind: $kind:expr, | |
1991 | target: $target:expr, | |
1992 | level: $lvl:expr, | |
1993 | fields: $($fields:tt)* | |
1994 | ) => {{ | |
3dfed10e XL |
1995 | use $crate::__macro_support::MacroCallsite; |
1996 | static META: $crate::Metadata<'static> = { | |
f035d41b XL |
1997 | $crate::metadata! { |
1998 | name: $name, | |
1999 | target: $target, | |
2000 | level: $lvl, | |
2001 | fields: $crate::fieldset!( $($fields)* ), | |
3dfed10e | 2002 | callsite: &CALLSITE, |
f035d41b XL |
2003 | kind: $kind, |
2004 | } | |
2005 | }; | |
3dfed10e XL |
2006 | static CALLSITE: MacroCallsite = MacroCallsite::new(&META); |
2007 | CALLSITE.register(); | |
2008 | &CALLSITE | |
f035d41b XL |
2009 | }}; |
2010 | } | |
2011 | ||
5869c6ff XL |
2012 | /// Constructs a new static callsite for a span or event. |
2013 | #[doc(hidden)] | |
2014 | #[macro_export] | |
2015 | macro_rules! callsite2 { | |
2016 | (name: $name:expr, kind: $kind:expr, fields: $($fields:tt)*) => {{ | |
2017 | $crate::callsite2! { | |
2018 | name: $name, | |
2019 | kind: $kind, | |
2020 | target: module_path!(), | |
2021 | level: $crate::Level::TRACE, | |
2022 | fields: $($fields)* | |
2023 | } | |
2024 | }}; | |
2025 | ( | |
2026 | name: $name:expr, | |
2027 | kind: $kind:expr, | |
2028 | level: $lvl:expr, | |
2029 | fields: $($fields:tt)* | |
2030 | ) => {{ | |
2031 | $crate::callsite2! { | |
2032 | name: $name, | |
2033 | kind: $kind, | |
2034 | target: module_path!(), | |
2035 | level: $lvl, | |
2036 | fields: $($fields)* | |
2037 | } | |
2038 | }}; | |
2039 | ( | |
2040 | name: $name:expr, | |
2041 | kind: $kind:expr, | |
2042 | target: $target:expr, | |
2043 | level: $lvl:expr, | |
2044 | fields: $($fields:tt)* | |
2045 | ) => {{ | |
2046 | use $crate::__macro_support::MacroCallsite; | |
2047 | static META: $crate::Metadata<'static> = { | |
2048 | $crate::metadata! { | |
2049 | name: $name, | |
2050 | target: $target, | |
2051 | level: $lvl, | |
2052 | fields: $crate::fieldset!( $($fields)* ), | |
2053 | callsite: &CALLSITE, | |
2054 | kind: $kind, | |
2055 | } | |
2056 | }; | |
2057 | MacroCallsite::new(&META) | |
2058 | }}; | |
2059 | } | |
2060 | ||
f035d41b | 2061 | #[macro_export] |
3dfed10e | 2062 | // TODO: determine if this ought to be public API?` |
f035d41b XL |
2063 | #[doc(hidden)] |
2064 | macro_rules! level_enabled { | |
2065 | ($lvl:expr) => { | |
3dfed10e XL |
2066 | $lvl <= $crate::level_filters::STATIC_MAX_LEVEL |
2067 | && $lvl <= $crate::level_filters::LevelFilter::current() | |
f035d41b XL |
2068 | }; |
2069 | } | |
2070 | ||
f035d41b XL |
2071 | #[doc(hidden)] |
2072 | #[macro_export] | |
2073 | macro_rules! valueset { | |
2074 | ||
2075 | // === base case === | |
2076 | (@ { $(,)* $($val:expr),* $(,)* }, $next:expr $(,)*) => { | |
2077 | &[ $($val),* ] | |
2078 | }; | |
2079 | ||
2080 | // === recursive case (more tts) === | |
2081 | ||
2082 | // TODO(#1138): determine a new syntax for uninitialized span fields, and | |
2083 | // re-enable this. | |
2084 | // (@{ $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = _, $($rest:tt)*) => { | |
2085 | // $crate::valueset!(@ { $($out),*, (&$next, None) }, $next, $($rest)*) | |
2086 | // }; | |
2087 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = ?$val:expr, $($rest:tt)*) => { | |
2088 | $crate::valueset!( | |
2089 | @ { $($out),*, (&$next, Some(&debug(&$val) as &Value)) }, | |
2090 | $next, | |
2091 | $($rest)* | |
2092 | ) | |
2093 | }; | |
2094 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = %$val:expr, $($rest:tt)*) => { | |
2095 | $crate::valueset!( | |
2096 | @ { $($out),*, (&$next, Some(&display(&$val) as &Value)) }, | |
2097 | $next, | |
2098 | $($rest)* | |
2099 | ) | |
2100 | }; | |
2101 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = $val:expr, $($rest:tt)*) => { | |
2102 | $crate::valueset!( | |
2103 | @ { $($out),*, (&$next, Some(&$val as &Value)) }, | |
2104 | $next, | |
2105 | $($rest)* | |
2106 | ) | |
2107 | }; | |
2108 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+, $($rest:tt)*) => { | |
2109 | $crate::valueset!( | |
2110 | @ { $($out),*, (&$next, Some(&$($k).+ as &Value)) }, | |
2111 | $next, | |
2112 | $($rest)* | |
2113 | ) | |
2114 | }; | |
2115 | (@ { $(,)* $($out:expr),* }, $next:expr, ?$($k:ident).+, $($rest:tt)*) => { | |
2116 | $crate::valueset!( | |
2117 | @ { $($out),*, (&$next, Some(&debug(&$($k).+) as &Value)) }, | |
2118 | $next, | |
2119 | $($rest)* | |
2120 | ) | |
2121 | }; | |
2122 | (@ { $(,)* $($out:expr),* }, $next:expr, %$($k:ident).+, $($rest:tt)*) => { | |
2123 | $crate::valueset!( | |
2124 | @ { $($out),*, (&$next, Some(&display(&$($k).+) as &Value)) }, | |
2125 | $next, | |
2126 | $($rest)* | |
2127 | ) | |
2128 | }; | |
2129 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = ?$val:expr) => { | |
2130 | $crate::valueset!( | |
2131 | @ { $($out),*, (&$next, Some(&debug(&$val) as &Value)) }, | |
2132 | $next, | |
2133 | ) | |
2134 | }; | |
2135 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = %$val:expr) => { | |
2136 | $crate::valueset!( | |
2137 | @ { $($out),*, (&$next, Some(&display(&$val) as &Value)) }, | |
2138 | $next, | |
2139 | ) | |
2140 | }; | |
2141 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+ = $val:expr) => { | |
2142 | $crate::valueset!( | |
2143 | @ { $($out),*, (&$next, Some(&$val as &Value)) }, | |
2144 | $next, | |
2145 | ) | |
2146 | }; | |
2147 | (@ { $(,)* $($out:expr),* }, $next:expr, $($k:ident).+) => { | |
2148 | $crate::valueset!( | |
2149 | @ { $($out),*, (&$next, Some(&$($k).+ as &Value)) }, | |
2150 | $next, | |
2151 | ) | |
2152 | }; | |
2153 | (@ { $(,)* $($out:expr),* }, $next:expr, ?$($k:ident).+) => { | |
2154 | $crate::valueset!( | |
2155 | @ { $($out),*, (&$next, Some(&debug(&$($k).+) as &Value)) }, | |
2156 | $next, | |
2157 | ) | |
2158 | }; | |
2159 | (@ { $(,)* $($out:expr),* }, $next:expr, %$($k:ident).+) => { | |
2160 | $crate::valueset!( | |
2161 | @ { $($out),*, (&$next, Some(&display(&$($k).+) as &Value)) }, | |
2162 | $next, | |
2163 | ) | |
2164 | }; | |
3dfed10e XL |
2165 | |
2166 | // Handle literal names | |
2167 | (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = ?$val:expr, $($rest:tt)*) => { | |
2168 | $crate::valueset!( | |
2169 | @ { $($out),*, (&$next, Some(&debug(&$val) as &Value)) }, | |
2170 | $next, | |
2171 | $($rest)* | |
2172 | ) | |
2173 | }; | |
2174 | (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = %$val:expr, $($rest:tt)*) => { | |
2175 | $crate::valueset!( | |
2176 | @ { $($out),*, (&$next, Some(&display(&$val) as &Value)) }, | |
2177 | $next, | |
2178 | $($rest)* | |
2179 | ) | |
2180 | }; | |
2181 | (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = $val:expr, $($rest:tt)*) => { | |
2182 | $crate::valueset!( | |
2183 | @ { $($out),*, (&$next, Some(&$val as &Value)) }, | |
2184 | $next, | |
2185 | $($rest)* | |
2186 | ) | |
2187 | }; | |
2188 | (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = ?$val:expr) => { | |
2189 | $crate::valueset!( | |
2190 | @ { $($out),*, (&$next, Some(&debug(&$val) as &Value)) }, | |
2191 | $next, | |
2192 | ) | |
2193 | }; | |
2194 | (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = %$val:expr) => { | |
2195 | $crate::valueset!( | |
2196 | @ { $($out),*, (&$next, Some(&display(&$val) as &Value)) }, | |
2197 | $next, | |
2198 | ) | |
2199 | }; | |
2200 | (@ { $(,)* $($out:expr),* }, $next:expr, $k:literal = $val:expr) => { | |
2201 | $crate::valueset!( | |
2202 | @ { $($out),*, (&$next, Some(&$val as &Value)) }, | |
2203 | $next, | |
2204 | ) | |
2205 | }; | |
2206 | ||
f035d41b XL |
2207 | // Remainder is unparseable, but exists --- must be format args! |
2208 | (@ { $(,)* $($out:expr),* }, $next:expr, $($rest:tt)+) => { | |
2209 | $crate::valueset!(@ { (&$next, Some(&format_args!($($rest)+) as &Value)), $($out),* }, $next, ) | |
2210 | }; | |
2211 | ||
2212 | // === entry === | |
2213 | ($fields:expr, $($kvs:tt)+) => { | |
2214 | { | |
2215 | #[allow(unused_imports)] | |
2216 | use $crate::field::{debug, display, Value}; | |
2217 | let mut iter = $fields.iter(); | |
2218 | $fields.value_set($crate::valueset!( | |
2219 | @ { }, | |
2220 | iter.next().expect("FieldSet corrupted (this is a bug)"), | |
2221 | $($kvs)+ | |
2222 | )) | |
2223 | } | |
2224 | }; | |
2225 | ($fields:expr,) => { | |
2226 | { | |
2227 | $fields.value_set(&[]) | |
2228 | } | |
2229 | }; | |
2230 | } | |
2231 | ||
2232 | #[doc(hidden)] | |
2233 | #[macro_export] | |
2234 | macro_rules! fieldset { | |
2235 | // == base case == | |
2236 | (@ { $(,)* $($out:expr),* $(,)* } $(,)*) => { | |
2237 | &[ $($out),* ] | |
2238 | }; | |
2239 | ||
2240 | // == recursive cases (more tts) == | |
2241 | (@ { $(,)* $($out:expr),* } $($k:ident).+ = ?$val:expr, $($rest:tt)*) => { | |
2242 | $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2243 | }; | |
2244 | (@ { $(,)* $($out:expr),* } $($k:ident).+ = %$val:expr, $($rest:tt)*) => { | |
2245 | $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2246 | }; | |
2247 | (@ { $(,)* $($out:expr),* } $($k:ident).+ = $val:expr, $($rest:tt)*) => { | |
2248 | $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2249 | }; | |
2250 | // TODO(#1138): determine a new syntax for uninitialized span fields, and | |
2251 | // re-enable this. | |
2252 | // (@ { $($out:expr),* } $($k:ident).+ = _, $($rest:tt)*) => { | |
2253 | // $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2254 | // }; | |
2255 | (@ { $(,)* $($out:expr),* } ?$($k:ident).+, $($rest:tt)*) => { | |
2256 | $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2257 | }; | |
2258 | (@ { $(,)* $($out:expr),* } %$($k:ident).+, $($rest:tt)*) => { | |
2259 | $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2260 | }; | |
2261 | (@ { $(,)* $($out:expr),* } $($k:ident).+, $($rest:tt)*) => { | |
2262 | $crate::fieldset!(@ { $($out),*, $crate::__tracing_stringify!($($k).+) } $($rest)*) | |
2263 | }; | |
2264 | ||
3dfed10e XL |
2265 | // Handle literal names |
2266 | (@ { $(,)* $($out:expr),* } $k:literal = ?$val:expr, $($rest:tt)*) => { | |
2267 | $crate::fieldset!(@ { $($out),*, $k } $($rest)*) | |
2268 | }; | |
2269 | (@ { $(,)* $($out:expr),* } $k:literal = %$val:expr, $($rest:tt)*) => { | |
2270 | $crate::fieldset!(@ { $($out),*, $k } $($rest)*) | |
2271 | }; | |
2272 | (@ { $(,)* $($out:expr),* } $k:literal = $val:expr, $($rest:tt)*) => { | |
2273 | $crate::fieldset!(@ { $($out),*, $k } $($rest)*) | |
2274 | }; | |
2275 | ||
f035d41b XL |
2276 | // Remainder is unparseable, but exists --- must be format args! |
2277 | (@ { $(,)* $($out:expr),* } $($rest:tt)+) => { | |
2278 | $crate::fieldset!(@ { "message", $($out),*, }) | |
2279 | }; | |
2280 | ||
2281 | // == entry == | |
2282 | ($($args:tt)*) => { | |
2283 | $crate::fieldset!(@ { } $($args)*,) | |
2284 | }; | |
2285 | ||
2286 | } | |
2287 | ||
2288 | #[cfg(feature = "log")] | |
2289 | #[doc(hidden)] | |
2290 | #[macro_export] | |
2291 | macro_rules! level_to_log { | |
2292 | ($level:expr) => { | |
5869c6ff | 2293 | match $level { |
3dfed10e XL |
2294 | $crate::Level::ERROR => $crate::log::Level::Error, |
2295 | $crate::Level::WARN => $crate::log::Level::Warn, | |
2296 | $crate::Level::INFO => $crate::log::Level::Info, | |
2297 | $crate::Level::DEBUG => $crate::log::Level::Debug, | |
f035d41b XL |
2298 | _ => $crate::log::Level::Trace, |
2299 | } | |
2300 | }; | |
2301 | } | |
2302 | ||
2303 | #[doc(hidden)] | |
2304 | #[macro_export] | |
2305 | macro_rules! __tracing_stringify { | |
2306 | ($s:expr) => { | |
2307 | stringify!($s) | |
2308 | }; | |
2309 | } | |
2310 | ||
2311 | #[cfg(not(feature = "log"))] | |
2312 | #[doc(hidden)] | |
2313 | #[macro_export] | |
2314 | macro_rules! __tracing_log { | |
5099ac24 | 2315 | (target: $target:expr, $level:expr, $value_set:expr ) => {}; |
f035d41b XL |
2316 | } |
2317 | ||
2318 | #[cfg(feature = "log")] | |
2319 | #[doc(hidden)] | |
2320 | #[macro_export] | |
2321 | macro_rules! __tracing_log { | |
5099ac24 | 2322 | (target: $target:expr, $level:expr, $value_set:expr ) => { |
6a06907d | 2323 | $crate::if_log_enabled! { $level, { |
f035d41b | 2324 | use $crate::log; |
5869c6ff | 2325 | let level = $crate::level_to_log!($level); |
6a06907d | 2326 | if level <= log::max_level() { |
f035d41b XL |
2327 | let log_meta = log::Metadata::builder() |
2328 | .level(level) | |
2329 | .target($target) | |
2330 | .build(); | |
2331 | let logger = log::logger(); | |
2332 | if logger.enabled(&log_meta) { | |
2333 | logger.log(&log::Record::builder() | |
2334 | .file(Some(file!())) | |
2335 | .module_path(Some(module_path!())) | |
2336 | .line(Some(line!())) | |
2337 | .metadata(log_meta) | |
5099ac24 | 2338 | .args(format_args!("{}", $crate::__macro_support::LogValueSet($value_set))) |
f035d41b XL |
2339 | .build()); |
2340 | } | |
2341 | } | |
2342 | }} | |
2343 | }; | |
2344 | } | |
2345 | ||
2346 | #[cfg(not(feature = "log"))] | |
2347 | #[doc(hidden)] | |
2348 | #[macro_export] | |
2349 | macro_rules! if_log_enabled { | |
6a06907d XL |
2350 | ($lvl:expr, $e:expr;) => { |
2351 | $crate::if_log_enabled! { $lvl, $e } | |
f035d41b | 2352 | }; |
6a06907d XL |
2353 | ($lvl:expr, $if_log:block) => { |
2354 | $crate::if_log_enabled! { $lvl, $if_log else {} } | |
f035d41b | 2355 | }; |
6a06907d | 2356 | ($lvl:expr, $if_log:block else $else_block:block) => { |
f035d41b XL |
2357 | $else_block |
2358 | }; | |
2359 | } | |
2360 | ||
2361 | #[cfg(all(feature = "log", not(feature = "log-always")))] | |
2362 | #[doc(hidden)] | |
2363 | #[macro_export] | |
2364 | macro_rules! if_log_enabled { | |
6a06907d XL |
2365 | ($lvl:expr, $e:expr;) => { |
2366 | $crate::if_log_enabled! { $lvl, $e } | |
f035d41b | 2367 | }; |
6a06907d XL |
2368 | ($lvl:expr, $if_log:block) => { |
2369 | $crate::if_log_enabled! { $lvl, $if_log else {} } | |
f035d41b | 2370 | }; |
6a06907d XL |
2371 | ($lvl:expr, $if_log:block else $else_block:block) => { |
2372 | if $crate::level_to_log!($lvl) <= $crate::log::STATIC_MAX_LEVEL { | |
2373 | if !$crate::dispatcher::has_been_set() { | |
2374 | $if_log | |
2375 | } else { | |
2376 | $else_block | |
2377 | } | |
f035d41b XL |
2378 | } else { |
2379 | $else_block | |
2380 | } | |
2381 | }; | |
2382 | } | |
2383 | ||
2384 | #[cfg(all(feature = "log", feature = "log-always"))] | |
2385 | #[doc(hidden)] | |
2386 | #[macro_export] | |
2387 | macro_rules! if_log_enabled { | |
6a06907d XL |
2388 | ($lvl:expr, $e:expr;) => { |
2389 | $crate::if_log_enabled! { $lvl, $e } | |
f035d41b | 2390 | }; |
6a06907d XL |
2391 | ($lvl:expr, $if_log:block) => { |
2392 | $crate::if_log_enabled! { $lvl, $if_log else {} } | |
f035d41b | 2393 | }; |
6a06907d XL |
2394 | ($lvl:expr, $if_log:block else $else_block:block) => { |
2395 | if $crate::level_to_log!($lvl) <= $crate::log::STATIC_MAX_LEVEL { | |
2396 | #[allow(unused_braces)] | |
2397 | $if_log | |
2398 | } else { | |
2399 | $else_block | |
2400 | } | |
f035d41b XL |
2401 | }; |
2402 | } |