style: Don't look for viewport units in stylesheets.
Use whether we've computed any viewport unit instead.
This is more accurate (we avoid restyling unnecessarily if we've found anything
ever on the stylesheet, but that hasn't matched).
This has the benefit of also matching Gecko, and simplify some code and
fishyness around, and also hopefully speeding up stylesheet parsing.
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Use whether we've computed any viewport unit instead.
This is more accurate (we avoid restyling unnecessarily if we've found anything
ever on the stylesheet, but that hasn't matched).
This has the benefit of also matching Gecko, and simplify some code and
fishyness around, and also hopefully speeding up stylesheet parsing.
PerformanceObserverInit.buffered
Per #18108, add `buffered` flag in the `PerformanceObserverInit` dict.
Per W3C spec, when `buffered` is set, `PerformanceObserver.observe()` method adds the entries buffered in the `Performance` instance into the observer's entry buffer.
One step is the implementation of the [filter by name and type](https://w3c.github.io/performance-timeline/#filter-buffer-by-name-and-type) algorithm. Don't think that the sort operation is useful in this case, but the spec states that this algorithm is to be used.
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#18108
- [X] These changes do not require tests (yet) because the timeline API is not powered.
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Don't fallback to discrete animations within animate().
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https://bugzilla.mozilla.org/show_bug.cgi?id=1394287
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The trait ToAnimatedZero now supports it, and it now applies to things with generics,
avoiding the trait bounds for field types of the variant on which it applies.
For the traits we derive which methods don't depend on associated types (i.e.
all of them but ToAnimatedValue and ToComputedValue), we now add trait bounds
for the actual field types directly, instead of bounding the type parameters.
[18224] Check if line_count is zero to calculate space around line
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Check line_count before attempting to calculate space around line
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- [x] These changes fix#18224 (github issue number if applicable).
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Disable stylo size-checking tests for 32-bit
The stylo tests that check for sizes of various things are intended for 64-bit platforms, not for 32-bit platforms, so we should just disable them there. Servo's CI doesn't run them on 32-bit platforms, but Gecko's CI will soonish.
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because tests are just being disabled
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Use Parser::skip_whitespace in a few places to make Parser::try rewind less
**Do not merge yet.** This pulls in unrelated cssparser changes which add a dependency to `dota`, and we’d like to resolve https://github.com/dtolnay/dtoa/pull/9 before landing dtoa in mozilla-central. Also, the dependency change may require manually revendoring in mozilla-central.
Gecko’s CSS parsing microbenchmarks before:
```
43.437 ± 0.391 ms Stylo.Servo_StyleSheet_FromUTF8Bytes_Bench
29.244 ± 0.042 ms Stylo.Gecko_nsCSSParser_ParseSheet_Bench
281.884 ± 0.028 ms Stylo.Servo_DeclarationBlock_SetPropertyById_Bench
426.242 ± 0.008 ms Stylo.Servo_DeclarationBlock_SetPropertyById_WithInitialSpace_Bench
```
After:
```
29.779 ± 0.254 ms Stylo.Servo_StyleSheet_FromUTF8Bytes_Bench
28.841 ± 0.031 ms Stylo.Gecko_nsCSSParser_ParseSheet_Bench
296.240 ± 4.744 ms Stylo.Servo_DeclarationBlock_SetPropertyById_Bench
293.855 ± 4.304 ms Stylo.Servo_DeclarationBlock_SetPropertyById_WithInitialSpace_Bench
```
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