This patch merges nsAtom into nsIAtom. For the moment, both names can be used
interchangeably due to a typedef. The patch also devirtualizes nsIAtom, by
making it not inherit from nsISupports, removing NS_DECL_NSIATOM, and dropping
the use of NS_IMETHOD_. It also removes nsIAtom's IIDs.
These changes trigger knock-on changes throughout the codebase, changing the
types of lots of things as follows.
- nsCOMPtr<nsIAtom> --> RefPtr<nsIAtom>
- nsCOMArray<nsIAtom> --> nsTArray<RefPtr<nsIAtom>>
- Count() --> Length()
- ObjectAt() --> ElementAt()
- AppendObject() --> AppendElement()
- RemoveObjectAt() --> RemoveElementAt()
- ns*Hashtable<nsISupportsHashKey, ...> -->
ns*Hashtable<nsRefPtrHashKey<nsIAtom>, ...>
- nsInterfaceHashtable<T, nsIAtom> --> nsRefPtrHashtable<T, nsIAtom>
- This requires adding a Get() method to nsRefPtrHashtable that it lacks but
nsInterfaceHashtable has.
- nsCOMPtr<nsIMutableArray> --> nsTArray<RefPtr<nsIAtom>>
- nsArrayBase::Create() --> nsTArray()
- GetLength() --> Length()
- do_QueryElementAt() --> operator[]
The patch also has some changes to Rust code that manipulates nsIAtom.
MozReview-Commit-ID: DykOl8aEnUJ
--HG--
extra : rebase_source : 254404e318e94b4c93ec8d4081ff0f0fda8aa7d1
Unfortunately this means that we lose the NS_STYLE_INHERIT_BIT optimization to
avoid posting changes if we had not requested the struct. In practice, I'm not
sure this optimization matters much, though, and we already compare all the
structs anyway.
We _could_ keep a weak parent pointer from the text style if needed, given we're
going to keep alive the text style at least until the parent style context goes
away, so should be safe, but I don't think the extra churn is worth it, to be
honest. Happy to do so as part of bug 1368290 if you think it's worth it.
MozReview-Commit-ID: ka6tNwf4Ke
--HG--
extra : rebase_source : dd6e98cf5743a8dd2e959ca09ed9a17e52b201e9
This patch also removes the duplication of style contexts during the
restyle, because otherwise pointer equality of ServoComputedValues stops
holding (and we assert on that in a few places)
MozReview-Commit-ID: 7Evc1p8ZfM2
Create an extra style context using the visited values (if they exist). This
mirrors the logic Gecko performs in nsStyleSet::GetContext for visited support.
MozReview-Commit-ID: EiJQXDgz8tX
Create an extra style context using the visited values (if they exist). This
mirrors the logic Gecko performs in nsStyleSet::GetContext for visited support.
MozReview-Commit-ID: EiJQXDgz8tX
Also, add GetParentAllowServo() to whitelist the usage in servo-backed style
system in subsequent parts so that we could revisit them later.
MozReview-Commit-ID: JthU18Ftx02
--HG--
extra : rebase_source : b8840adcc4959f96cd429db65584f3e83c09c597
nsStyleContext::CalcDifference had an optimization where, when we knew
that the old and new style context have the same rule node, we knew that
the only change hints that would need to be handled are those in the
"not handled for descendants" category, generated due to explicit
'inherit' values on reset properties. This was because any changes due
to differences in inherited properties should only have generated
"handled for descendants" change hints (and thus would already have been
handled on an ancestor).
Before bug 931668, this let us avoid calling CalcDifference on structs
that only would have generated hints that we knew we already would have
handled. However, after bug 931668, we compare all structs anyway so
that we can set the aEqualStructs outparam, so we don't gain anything
from this optimization. We can still return these change hints we know
will not need to be handled, and rely on ElementRestyler::CaptureChange
to filter them out.
MozReview-Commit-ID: Ld1s2Js0i6r
We also assert against the Servo traversal because we don't currently test the
parallel traversal on CI (though we will soon).
MozReview-Commit-ID: 9GRNizE44Oi
The idea is to be able to call the right function during style resolution time
without doing a linear walk via nsCSSAnonBoxes::IsNonInheritingAnonBox.
MozReview-Commit-ID: JKt33GggTjz
--HG--
extra : rebase_source : fcf477dcef8529c803bf97b1d3a16f8f4fcea39f
Manish Goregaokar
Nicholas Nethercote
Boris Zbarsky
Emilio Cobos Álvarez
Cameron McCormack
Sebastian Hengst
Jonathan Chan
Bobby Holley
J. Ryan Stinnett
Phil Ringnalda
Jonathan Kew
Ting-Yu Lin
Carsten "Tomcat" Book