This patch basically does:
* Add descriptor setters and generation count to CounterStyleRule in
Servo. (This code is mostly based on the old code inside
nsCSSCounterStyleRule for handling mutation.)
* Use RawServoCounterStyleRule in CounterStyleManager.
* Add ServoCounterStyleRule and remove nsCSSCounterStyleRule.
Test change:
* "fixed" was parsed as and thus serialized to "fixed 1", but Servo
doesn't do so. It preserves whether the number presents. Either way
is probably fine.
MozReview-Commit-ID: EtKTeu32isi
--HG--
extra : rebase_source : ec44f01c581003ce4b6ef69435a05de7f3da5469
This patch does the following things:
* Create a new class ServoFontFaceRule for CSSOM of @font-face rule
which mostly follows how nsCSSFontFaceRule was implemented.
* Remove the old nsCSSFontFaceRule and binding code to create it.
* Have FontFace backed by Servo data via making mRule and mDescriptors
of the class hold RawServoFontFaceRule like ServoFontFaceRule.
To keep this patch small, it effectively just delays the conversion
from Servo data to nsCSSValue from parsing to using. This may cause
worse performance if the font set is flushed repeatedly. Supposing we
don't flush font set very frequently, it may not be a big deal.
We may still want to remove the intermediate nsCSSValue conversion at
some point, and have everything converted to their final form directly
when used, but that can happen in followups.
There are some unfortunate bits from this change:
* We lose style sheet for logging in FontFaceSet. This is probably not
all that worse, because we wouldn't have that before either if the
page doesn't use CSSOM to visit it. But we should figure out some
approach to fix it anyway.
* InspectorFontFace no longer shares the same rule object as CSSOM.
This isn't really a problem if the @font-face rule isn't very mutable.
Unless we want to make the rule returned from InspectorFontFace to be
mutable (i.e. via inspector), not using the same object probably isn't
too bad.
This patch switches the code we use to serialize stuff in FontFace and
CSSFontFaceRule, which leads to some failures in tests. Specifically,
the expected changes including:
* Value of font-family now can be serialized to identifier sequence like
font-family property. The old code always serializes it to string,
but it doesn't seem to have different requirement than the property.
Blink can serialize to identifier as well.
* Family name inside local() is also changed to use the same way as
family names elsewhere (i.e. can be identifier sequence). Blink has
the same behavior as the old code, but I don't think it's a big deal.
* The order of descriptors serialized gets changed. I don't think it
matters at all.
* Empty string as font-family via using string syntax is no longer
considered invalid for FontFace. I don't find it is mentioned anywhere
that it should be specifically treated invalid.
MozReview-Commit-ID: 32Fk3Fi9uTs
--HG--
extra : rebase_source : 6221ec8fc56de357b06dd27e770fb175348a2f77
The new StaticPrefs machinery means that StylePrefs can be removed.
Note that this approach mirrors all static prefs into Rust, but I have only
updated structs.rs for the prefs that Stylo uses.
On a CLOSED TREE, since a sheriff closed the tree while I was about to land this
via autoland.
MozReview-Commit-ID: G1SY0987WJ7
This patch basically does:
* remove StyleSetHandle and its corresponding files
* revisit #includes of related header files and change correspondingly
* change nsIPresShell::mStyleSet to be UniquePtr<ServoStyleSet>
* change the creating path of ServoStyleSet to pass UniquePtr
* change other mentions of StyleSetHandle to ServoStyleSet*
* remove AsServo() calls on ServoStyleSet
Some unfortunate bits:
* some methods of (Servo)StyleSet only accepts ServoStyleSheet while
many places call into the methods with StyleSheet, so there are many
->AsServo() added to sheets
MozReview-Commit-ID: K4zYnuhOurA
--HG--
extra : rebase_source : 459e8efeb171adad089d94272e143e8c244bd279
extra : source : 65ba2f174fcf7dba4e59c00ee8908b1bd0820a48
To remove the dependency from ServoStyleSet.h to ServoBindings.h.
MozReview-Commit-ID: 6YJ71AnQklL
--HG--
extra : rebase_source : 20e1ead4438f3e3e457af2a4ae4e614992b5f050
extra : source : 53aae6abf7482d4366b66fc8b14d89bf762c19f3
Currently static atoms are stored on the heap, but their char buffers are
stored in read-only static memory.
This patch changes the representation of nsStaticAtom (thus making it a
non-trivial subclass of nsAtom). Instead of a pointer to the string, it now has
an mStringOffset field which is a 32-bit offset to the string. (This requires
placement of the string and the atom within the same object so that the offset
is known to be small. The docs and macros in nsStaticAtom.h handle that.)
Static and dynamic atoms now store their chars in different ways: nsStaticAtom
stores them inline, nsDynamicAtom has a pointer to separate storage. So
`mString` and GetStringBuffer() move from nsAtom to nsDynamicAtom.
The change to static atoms means they can be made constexpr and stored in
read-only memory instead of on the heap. On 64-bit this reduces the per-process
overhead by 16 bytes; on 32-bit the saving is 12 bytes. (Further reductions
will be possible in follow-up patches.)
The increased use of constexpr required multiple workarounds for MSVC.
- Multiple uses of MOZ_{PUSH,POP}_DISABLE_INTEGRAL_CONSTANT_OVERFLOW_WARNING to
disable warnings about (well-defined!) overflow of unsigned integer
arithmetic.
- The use of -Zc:externConstexpr on all files defining static atoms, to make
MSVC follow the C++ standard(!) and let constexpr variables have external
linkage.
- The use of -constexpr:steps300000 to increase the number of operations
allowed in a constexpr value, in order to handle gGkAtoms, which requires
hashing ~2,500 atom strings.
The patch also changes how HTML5 atoms are handled. They are now treated as
dynamic atoms, i.e. we have "dynamic normal" atoms and "dynamic HTML5 atoms",
and "dynamic atoms" covers both cases, and both are represented via
nsDynamicAtom. The main difference between the two kinds is that dynamic HTML5
atoms still aren't allowed to be used in various operations, most notably
AddRef()/Release(). All this also required moving nsDynamicAtom into the header
file.
There is a slight performance cost to all these changes: now that nsStaticAtom
and nsDynamicAtom store their chars in different ways, a conditional branch is
required in the following functions: Equals(), GetUTF16String(),
WeakAtom::as_slice().
Finally, in about:memory the "explicit/atoms/static/atom-objects" value is no
longer needed, because that memory is static instead of heap-allocated.
MozReview-Commit-ID: 4AxPv05ngZy
nsStyleStructList.h was initially made generated in bug 873368 to avoid
manually maintaining boilerplate for if-dispatch, while the if-dispatch
was replaced by jump table in bug 1171842, so the boilerplate went away.
However, in bug 1122781 (before bug 1171842), boilerplate for dependency
check, so it still needs to be generated.
The dependency table is removed in the previous patch, so we no longer
have any boilerplate in the style struct list, and thus it doesn't need
to be generated anymore.
MozReview-Commit-ID: GkbJZ98ojbE
--HG--
extra : rebase_source : a148b97c051bb6c88846cf6ba617c4edef70ca24
extra : source : f1c7d19cde195fb90ac2627d16ed69d020de01b9
So that we don't need to include nsStyleStruct.h in gfx any more.
MozReview-Commit-ID: 6nOaAbssLCz
--HG--
extra : rebase_source : 9c195c90277a4584dc14a6949e9eea53bcd8487c
Much in the spirit of bug 1434474.
We right now call MediaFeatureChanges sync or async pretty randomly. This has
caused bugs in the past like bug 1413143.
Unify media feature changes, and only post them async, and flush them from
FlushPendingNotifications.
This also fixes a pre-existing problem where style wasn't flushed correctly from
getComputedStyle when there were pending media feature values.
MozReview-Commit-ID: H9S1M8fk5H4
This class was used back when we didn't have a base class for CSSStyleSheet
and ServoStyleSheet. Now it's unused.
MozReview-Commit-ID: 8xaMAA3Opf7
--HG--
extra : rebase_source : fe507762ba80ab54ca2a87e84faa8bc1a1a8590f
There are four things that must be provided for every static atom, two of which
have a macro:
- the atom pointer declaration (no macro);
- the atom pointer definition (no macro);
- the atom char buffer (NS_STATIC_ATOM_BUFFER);
- the StaticAtomSetup struct (NS_STATIC_ATOM_SETUP).
This patch introduces new macros for the first two things: NS_STATIC_ATOM_DECL
and NS_STATIC_ATOM_DEFN, and changes the arguments of the existing two macros
to make them easier to use (e.g. all the '##' concatenation now happens within
the macros).
One consequence of the change is that all static atoms must be within a class,
so the patch adds a couple of classes where necessary (DefaultAtoms, TSAtoms).
The patch also adds a big comment explaining how the macros are used, and what
their expansion looks like. This makes it a lot easier to understand how static
atoms work. Correspondingly, the patch removes some small comments scattered
around the macro use points.
MozReview-Commit-ID: wpRyrEOTHE
--HG--
extra : rebase_source : 9f85d477b4d06c9a9e710c757de1f1476edb6efe
Add ServoFontFeatureValuesRule for CSSOM representation of
@font-feature-values rule and wire up with bindings.
MozReview-Commit-ID: B4Lpj43bvKX
--HG--
extra : rebase_source : 6508027f88ff76784ed7d0e5420d6e174f116b38
Extract CSSFontFeatureValuesRule from nsCSSFontFeatureValuesRule
class. This is necessary because we will create a FontFeatureValues
rule for Servo side.
MozReview-Commit-ID: GKy5wa6JLv9
--HG--
extra : rebase_source : 015f13da9a776c4ece8aa13655395afbb347b870
When cross-compiling, rust-bindgen needs the -isysroot
flag we pass to the C++ compiler to find the correct
headers. Add a new BINDGEN_CFLAGS environment variable
for passing this and other relevant options, and reformat
its contents in toolchain.configure so we can use autoconf-
style template substitution to poke it into a bindgen.toml
file to be read by build scripts like build_gecko.rs.
Set this variable from the macosx/cross-mozconfig.common
to the same extra flags we pass to CXX so automation
builds work correctly with --enable-stylo.
MozReview-Commit-ID: 7wabObiFtVb
--HG--
extra : rebase_source : eeba30e3d64112da65e2e6830ef5fc1b54965529
Initialization of mChildSheet will be implemented in a later patch.
MozReview-Commit-ID: 3SX3GJEhpBQ
--HG--
extra : source : e45a434d0e9d2e2d8c628b17c2074b8f5de4b1ee
