The traversal for these was incorrect and awkward. Now it's less
incorrect but still very awkward. We should find better ways to
implement this, but for now this at least passes many more WPT tests.
This sucks, and we're gonna have to do better, but for now let's
invalidate the whole document's style, so that we get correct behavior
if there are :has() selectors present.
The specialization for the destructor of `AK::Optional` is ambiguous
when `T` is neither TriviallyDestructible nor Destructible.
The fix adds an additional check for `Destructible` when generating the
destructor of `AK::Optional`, since it calls the destructor of `T`, and
therefore already required `T` to be `Destructible` anyway.
Attempting this resulted in an error because the `m_pointer` field does
not exist on `Optional<T>`. Creating a shared `ptr()` function and
adding the necessairy overloads solves this issue.
And here's the wild part: instead of cloning WPT tests, import the
relevant WPT tests that this fixes into our own test suite.
This works by adding a small Ladybird-specific callback in
resources/testharnessreport.js (which is what that file is meant for!)
Note that these run as text tests, and so they must signal the runner
when they are done. Tests using the "usual" WPT harness should just
work, but tests that do something more freestyle will need manual
signaling if they are to be imported.
I've also increased the test timeout here from 30 to 60 seconds,
to accommodate the larger WPT-style tests.
Reading the RFC9111 spec makes it clear that the stored response was
not intended to be cloned. This is because there is a "clone response"
operation that is used in other places, but never for stored responses.
Responses returned from `http_network_or_cache_fetch` were copied
directly from the cache, which is incorrect, since revalidation may
later modify the response, or even invalidate it, such as when the
`Access-Control-Allow-Origin` header is changed.
This fixes WPT test [wpt/cors/304.htm](http://wpt.live/cors/304.htm)
When aspect-ratio is degenerate (e.g. 0/1 or 1/0) we should
fallback to the same behaviour as `aspect-ratio: auto` according to spec
This commit explicitly handles this case and fixes five WPT test in
css/css-sizing/aspect-ratio (zero-or-infinity-[006-010])
The support in LibWeb is quite easy as the previous commits introduced
helpers to support lab-like colors.
Now for the methods in Color:
- The formulas in `from_lab()` are derived from the CIEXYZ to CIELAB
formulas the "Colorimetry" paper published by the CIE.
- The conversion in `from_xyz50()` can be decomposed in multiple steps
XYZ D50 -> XYZ D65 -> Linear sRGB -> sRGB. The two first conversion
are done with a singular matrix operation. This matrix was generated
with a Python script [1].
This commit makes us pass all the `css/css-color/lab-00*.html` WPT
tests (0 to 7 at the time of writing).
[1] Python script used to generate the XYZ D50 -> Linear sRGB
conversion:
```python
import numpy as np
# http://www.brucelindbloom.com/index.html?Eqn_ChromAdapt.html
# First let's convert from D50 to D65 using the Bradford method.
m_a = np.array([
[0.8951000, 0.2664000, -0.1614000],
[-0.7502000, 1.7135000, 0.0367000],
[0.0389000, -0.0685000, 1.0296000]
])
# D50
chromaticities_source = np.array([0.96422, 1, 0.82521])
# D65
chromaticities_destination = np.array([0.9505, 1, 1.0890])
cone_response_source = m_a @ chromaticities_source
cone_response_destination = m_a @ chromaticities_destination
cone_response_ratio = cone_response_destination / cone_response_source
m = np.linalg.inv(m_a) @ np.diagflat(cone_response_ratio) @ m_a
D50_to_D65 = m
# https://en.wikipedia.org/wiki/SRGB#From_CIE_XYZ_to_sRGB
# Then, the matrix to convert to linear sRGB.
xyz_65_to_srgb = np.array([
[3.2406, - 1.5372, - 0.4986],
[-0.9689, + 1.8758, 0.0415],
[0.0557, - 0.2040, 1.0570]
])
# Finally, let's retrieve the final transformation.
xyz_50_to_srgb = xyz_65_to_srgb @ D50_to_D65
print(xyz_50_to_srgb)
```
LLVM recommends compiling with at least -O1 to have decent performance
with sanitizers enabled. Indeed, this improves CI performance of LibWeb
tests as follows:
GCC on Linux: 160.61s to 119.68s (40.93s faster)
Clang on Linux: 65.56s to 55.64s ( 9.92s faster)
If statements without an else clause generated jumps to the next
instruction, this commit fixes the if statement generation so that it
dosen't produce them anymore.
This is an example of JS code that generates the useless jumps
(a => if(a){}) ();
This avoids having to do O(n) contains() in the various flag accessors.
Yields a ~20% speed-up on the following microbenchmark:
const re = /foo/dgimsvy;
for (let i = 0; i < 1_000_000; ++i)
re.flags;
To help people in troubleshooting problems when running the WPT.sh
script, this change makes the script echo to stdout the complete
“wpt run” invocation (including all the flags and path args).
