No need to call the expensive establishes_stacking_context() here, as
we've already built the stacking context tree and can simply test for
the presence of existing stacking contexts.
This is preparation for allowing blocks with their own internal BFC to
flow around floating boxes in the parent BFC.
Note that IFC still has the available_space_for_line() API, which
returns space available within the IFC's own containing block, while the
BFC available_space_for_line() returns space available within its root.
This required updating a bunch of patches which had conflicts
in the latest version.
New Patches:
- serenity: Add bogus O_NDELAY just to allow the port to compile
- serenity: Disable nice() stress workload as we do not implement it
- serenity: Disable prctl stressor on serenity
In Selectors level 4, `:nth-child()` and `:nth-last-child()` can both
optionally take a selector-list argument. This selector-list acts as a
filter, so that only elements matching the list are counted. For
example, this means that the following are equivalent:
```css
:nth-child(2n+1 of p) {}
p:nth-of-type(2n+1) {}
```
This fixes the specificity for :not(), :is() and :where(). Also, we now
clamp the specificity numbers instead of letting them overflow, and I
sprinkled in some spec comments for good measure.
`<forgiving-selector-list>` and `<forgiving-relative-selector-list>` are
the same as regular selector-lists, except that an invalid selector
does not make the whole list invalid. The former is used by the `:is()`
pseudo-class.
For example:
```css
/* This entire selector-list is invalid */
.foo, .bar, !?invalid { }
/* This is valid, but the "!?invalid" selector is removed */
:is(.foo, .bar, !?invalid) { }
```
Also as part of this, I've removed the `parse_a_selector(TokenStream)`
and `parse_a_relative_selector(TokenStream)` methods as they don't add
anything useful.
To do so, we now check that the framebuffer type is RGB so we know that
the Multiboot bootloader actually provided a valid framebuffer to work
with.
This fixes a problem I observed on my ICH7 test machine that apparently
the multiboot_framebuffer_addr was not null but there was no framebuffer
that was set up for RGB colors, and by initializing that console, there
was a memory curroption caused somewhere in the EBDA area to probably
cause a complete system lockup.
This helps solving an issue when we boot with text mode screen so the
Kernel initializes an early text mode console, but even after disabling
it, that console can still access VGA ports. This wouldn't be a problem
for emulated hardware but bare metal hardware might have a "conflict",
especially if the native driver explicitly request to disable the VGA
emulation.
This class already has variables named m_lock, and it's also strange
that locals are named with the `m_` prefix. So lets fix that to make
the code more readable.
Found by PVS-Studio.
C++20 provides the `requires` clause which simplifies the ability to
limit overload resolution. Prefer it over `EnableIf`
With all uses of `EnableIf` being removed, also remove the
implementation so future devs are not tempted.
This implementation of the secp256r1 elliptic curve uses two techniques
to improve the performance of the operations.
1. All coordinates are stored in Jacobian form, (X/Z^2, Y/Z^3, Z), which
removes the need for division operations during point addition or
doubling. The points are converted at the start of the computation,
and converted back at the end.
2. All values are transformed to Montgomery form, to allow for faster
modular multiplication using the Montgomery modular multiplication
method. This means that all coordinates have to be converted into
this form, and back out of this form before returning them.
If the previous active glyph is outside the currently selected
block range, reset GlyphMap to show all glyphs. This is less
disorienting when undoing changes outside the visible range.
Previously the glyph undo stack saved an array of bytes representing
the restore state of an individual glyph when modified. Now the
selection undo stack saves a byte buffer of the entire selection,
letting us restore changes to multiple glyphs at once.
Makes copy history a bit more informative by showing the code point
range of the selection copied, or the individual character if the
selection contains only one glyph.
Store a reference to the newly created execution context in an aptly
named variable, rename global_this_value to just this_value, and only
call set_global_object() in a single place.
It makes no sense to require passing a global object and doing a stack
space check in some cases where running out of stack is highly unlikely,
we can't recover from errors, and currently ignore the result anyway.
This is most commonly in constructors and when setting things up, rather
than regular function calls.
