Add asserts to make failure clearer
Gecko currently doesn't pass absolute path for `MOZ_DIST`, which leads to obscure panic when running the build script. This patch adds some assertions so that failures around this would be clearer.
r? @emilio
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I noticed that our current behavior in ContentRangeInserted is incorrect. Unlike
ContentInserted (where this code lived originally), ContentRangeInserted takes a
start and end element. I'm not sure if we ever take that path for new content that
needs style, but it seemed sketchy. And generally, it seems nice to just always
style new content the same way (though we still need to style NAC by the subtree
root, since it hasn't been attached to the parent yet).
For situations where there is indeed only one unstyled child, the traversal
overhead should be neglible, since we special-case the single-element in
parallel.rs to avoid calling into rayon.
Being more explicit about what we want here also makes us more robust against
the other handful of callpaths that can take us into
nsCSSFrameConstructor::{ContentRangeInserted,ContentAppended}. Currently we
can call StyleNewSubtree on an already-styled element via RecreateFramesForContent,
which triggers an assertion in the servo traversal.
MozReview-Commit-ID: DqCGh90deHH
Sometimes Gecko eagerly styles things without processing pending restyles first. In
general we'd like to avoid this, but there can be good reasons (for example, needing
to construct a frame for some small piece of newly-added content in order to do something
specific with that frame, but not wanting to flush all of layout). Just handle it.
MozReview-Commit-ID: EjXs0M4855Q
Use LengthOrNormal for column-gap #14297
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Added image-orientation property
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Implemented as per the MDN documentation—I could not find a current CSS draft. I am not sure if this is the complete correct metadata for the longhand helper:
```
<%helpers:longhand name="image-orientation”
experimental=“True”
animatable=“False”>
```
Also I am not sure how to test this and would appreciate help in creating a testing strategy.
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- [X] These changes fix#13877.
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Majority of build_gecko.rs is just the straightforward conversion from
regen.py. There are two differences that:
1. Side in whitelist is changed to mozilla::Side
2. std::atomic__My_base is added to opaque types for Windows
Introduce a PropertyId enum and use it instead of strings of property names
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* `LonghandId` and `ShorthandId` are C-like enums
* `Atom` is used for the name of custom properties.
* `PropertyDeclarationId` is the identifier for `PropertyDeclaration`,
after parsing and shorthand expansion. (Longhand or custom property.)
* `PropertyId` represents any CSS property, e.g. in CSSOM.
(Longhand, shorthand, or custom.)
CC @upsuper
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The primary idea of this patch is to ditch the rigid enum of Previous/Current
styles, and replace it with a series of indicators for the various types of
work that needs to be performed (expanding snapshots, rematching, recascading,
and damage processing). This loses us a little bit of sanity checking (since
the up-to-date-ness of our style is no longer baked into the type system), but
gives us a lot more flexibility that we'll need going forward (especially when
we separate matching from cascading). We also eliminate get_styling_mode in
favor of a method on the traversal.
This patch does a few other things as ridealongs:
* Temporarily eliminates the handling for transfering ownership of styles to the
frame. We'll need this again at some point, but for now it's causing too much
complexity for a half-implemented feature.
* Ditches TRestyleDamage, which is no longer necessary post-crate-merge, and is
a constant source of compilation failures from either needing to be imported
or being unnecessarily imported (which varies between gecko and servo).
* Expands Snapshots for the traversal root, which was missing before.
* Fixes up the skip_root stuff to avoid visiting the skipped root.
* Unifies parallel traversal and avoids spawning for a single work item.
* Adds an explicit pre_traverse step do any pre-processing and determine whether
we need to traverse at all.
MozReview-Commit-ID: IKhLAkAigXE
* `LonghandId` and `ShorthandId` are C-like enums
* `Atom` is used for the name of custom properties.
* `PropertyDeclarationId` is the identifier for `PropertyDeclaration`,
after parsing and shorthand expansion. (Longhand or custom property.)
* `PropertyId` represents any CSS property, e.g. in CSSOM.
(Longhand, shorthand, or custom.)
Using these instead of strings avoids some memory allocations and copies.
Write tests for CSSOM Interfaces
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ToCss implementation was wrong about Keyframe percentage values, it was writing values between 0-1. I had to fix it. Wrote some tests about CSSKeyframesRule, CSSNamespaceRule, CSSRuleList, CSSStyleSheet, StyleSheetList interfaces.
CSSFontFaceRule and CSSViewportRule looks like not implemented yet. I didn't write one for them.
Also name attribute in CSSKeyframesRule isn't implemented yet. Is there any complication about it? If not, I can implement it.
r? @Manishearth
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This allows us to control whether the catchall case in the match expression
that maps Gecko const to Servo enum will be generated.
MozReview-Commit-ID: L65IjTONdfl
allow the style bloom filter to recover from switch to a node with no common ancestor with the old node
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Since https://bugzilla.mozilla.org/show_bug.cgi?id=1321284, we can have multiple disjoint subtrees of elements to style in a document, due to document level native anonymous content not inheriting from the document's element. This patch tweaks the style Bloom filter to allow switching to a new node that has no common ancestor with the old node.
r? @emilio
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… common ancestor with the old node.
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