cssparser provides a way to set the initial line number on a
ParserInput. This patch changes servo to use this facility, rather than
reimplement the same functionality itself.
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https://bugzilla.mozilla.org/show_bug.cgi?id=1371395https://reviewboard.mozilla.org/r/163194/
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https://github.com/servo/rust-cssparser/pull/177
Also simplify the `ParseErrorReporter` trait a bit.
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This PR renders paint worklet canvases at the device pixel resolution, rather than the CSS pixel resolution.
It's a dependent PR, building on #17239, #17326 and #17364.
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The `stylearc` alias is left there temporarilly and will be removed completely in a later commit/PR where also `components/style/gecko/generated/structs_{debug|release}.rs` are re-generated (they still use the old alias).
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Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1372041 and all the dependent/related issues.
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- [x] `./mach build -d` does not report any errors (kinda, need webrender published and Cargo.toml fixed up)
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This requires https://github.com/servo/rust-cssparser/pull/143 for the final commit. There's no better way to split that work up, unfortunately, and it's extremely easy to bitrot. I would appreciate if we could expedite reviewing this work.
This is the work necessary to enable https://bugzilla.mozilla.org/show_bug.cgi?id=1352669. It makes sense to merge it separately because it's so much effort to keep it up to date with the ongoing Stylo work.
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This is for bug 1357583.
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Link to the gecko bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=1355408.
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The Gecko side doesn't propagate its quirks mode yet.
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…so with proper alignment.
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This allows accurate line numbers when reporting stylesheet errors.
@jdm This is going to require some effort to merge my changes with other recent changes to `ParserContext`. Because of that I would appreciate a quick sanity check before I put the time into performing the merge.
For example, should I store the `offset` as a u64, or should it be an Option?
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Before this PR, every object reflected in CSSOM is in `Arc<RwLock<_>>` to enable safe (synchronized) mutable aliasing. Acquiring all these locks has significant cost during selector matching:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1311469
* https://bugzilla.mozilla.org/show_bug.cgi?id=1335941
* https://bugzilla.mozilla.org/show_bug.cgi?id=1339703
This PR introduce a mechanism to protect many objects with the same `RwLock` that only needs to be acquired once.
In Stylo, there is one such lock per process (in a `lazy_static`), used for everything.
I non-Stylo Servo, I originally intended to have one such lock per document (for author-origin stylesheets, and one per process for user-agent and user sytlesheets since they’re shared across documents, and never mutated anyway). However I failed to have the same document-specific (or pipeline-specific) `Arc` reachable from both `Document` nodes and `LayoutThread`. Recursively following callers lead me to include this `Arc` in `UnprivilegedPipelineContent`, but that needs to be serializable. So there is a second process-wide lock.
This was previously #15998, closed accidentally.
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This is on top of https://github.com/servo/servo/pull/15928.
Now that cascade() gets a Device ref, we can use the default computed values
from there to avoid propagating that state all over the place.
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@jdm @SimonSapin
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1. Added ServoUrl as a parameter to report_error(...) of ParseErrorReporter trait.
2. I am not sure how to handle the case of impl ParseErrorReporter for CSSErrorReporter and MemoryHoleReporter, so have not made any changes (other than adding ServoUrl arg) to report_error implementations for these.
3. In StdoutErrorReporter i have added the ServoUrl arg to the info! function,
4. I would like to know if i am on the correct path and clarify what else needs to be done.
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I began this for making the `CalcLengthOrPercentage` represent `LengthOrPercentage` (instead of the enum we already have), but only later did I realize that it will make `LengthOrPercentageOrFoo` types fatty (which is the problem we're trying to avoid - #15061) and so, I dropped that attempt. Along the way, I introduced an internal type for `Length`, for representing all its non-calc variants (which are `Copy`). We could still have this type for the `LengthOrPercentageOrFoo` types which don't really need `Length` since they already have their own variants for calc.
r? @Manishearth @emilio @SimonSapin or anyone interested
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For #15061
CalcLOP is a large struct, and gets used quite often. While #15063 reduces its size a bit,
it will still be much larger than any of the other variants in the `specified::Length*` types,
so it will still bloat sizes, especially for specified values that contain many lengths.
This change boxes it in the length types, so that it just takes one word.
r? @heycam
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The idea here is having (for convenience) different `Expression` and `Device` representations for Gecko.
Both will be implemented in rust, but will use `nsMediaFeatures` as a source of media features instead of the Servo bits.
Does it sound good?
r? @heycam or @Manishearth
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This is necessary for the upcoming work in Stylo, given I plan to make MediaType
different for Servo and Gecko, and the Unknown variant doesn't fit in MediaType
to be fair, the device is never going to have any unknown media type.
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r? @SimonSapin or @mbrubeck
cc @heycam and @bholley
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Otherwise it would be hard for Gecko to hold `CssRules`.
r? @manishearth
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implement support for the `width` media query
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r? @upsuper
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Still needs a bunch of code in net to be converted in order to get more
advantage of this for images and stuff, but meanwhile this should help quite a
bit with #13778.
Still wanted to get this in.
r? @SimonSapin
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This PR is intended to add basic support for all CSSOM interfaces, with the ability to index `document.styleSheets` and css rule lists, and serializing individual css rules. Handling individual interface methods for CSSRule subclasses can probably be done with easy/medium bugs.
Mutation safety isn't dealt with here; if the css rule list is mutated the CSSOM will be in an inconsistent state. I intend to deal with this via zero sized tokens, see https://groups.google.com/forum/#!topic/mozilla.dev.servo/AnxJoVmtMXQ . I'll handle that when I start making the CSSOM mutable. (Getting the immutable bit landed first opens this up for easy bugs)
This doesn't really change style aside from adding an extra arc in the CSS rule list as discussed in the linked thread. So far this same design can be used by stylo as well when the time comes.
f? @SimonSapin @emilio
cc @upsuper
part of #11420
Todo:
- [x] Stubs for rest of the CSSRule subclasses
- [x] <s>ToCSS impls for CSSRules.</s> May make into easy bugs and stub out in this PR https://github.com/servo/servo/issues/14195
- [x] Cache CSSStyleSheet on the relevant node
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Update CSSRule naming from 'CSSRule' to 'CssRule'
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`MediaList` is the name of the interface for "collection of media queries" used in [CSSOM spec](https://drafts.csswg.org/cssom/#the-medialist-interface), `MediaQueryList` happens to mean something different in [CSSOM View spec](https://drafts.csswg.org/cssom-view/#the-mediaquerylist-interface), which also leads to naming conflict in dom code. So I think it's better renaming it to `MediaList`.
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Previously, `string-cache` defined:
* An string-like `Atom` type,
* An `atom!("foo")` macro that expands to a value of that type, for a set of strings known at compile-time,
* A `struct Namespace(Atom);` type
* A `ns!(html)` macro that maps known prefixed to `Namespace` values with the corresponding namespace URL.
Adding a string to the static set required making a change to the `string-cache` crate.
With 0.3, the `Atom` type is now generic, with a type parameter that provides a set of static strings. We can have multiple such sets, defined in different crates. The `string_cache_codegen` crate, to be used in build scripts, generates code that defines such a set, a new atom type (a type alias for `Atom<_>` with the type parameter set), and an `atom!`-like macro.
The html5ever repository has a new `html5ever_atoms` crate that defines three such types: `Prefix`, `Namespace`, and `LocalName` (with respective `namespace_prefix!`, `namespace_url!`, and `local_name!` macros). It also defines the `ns!` macro like before.
This repository has a new `servo_atoms` crate in `components/atoms` that, for now, defines a single `Atom` type (and `atom!`) macro. (`servo_atoms::Atom` is defined as something like `type Atom = string_cache::Atom<ServoStaticStringSet>;`, so overall there’s now two types named `Atom`.)
In this PR, `servo_atoms::Atom` is used for everything else that was `string_cache::Atom` before. But more atom types can be defined as needed. Two reasons to do this are to auto-generate the set of static strings (I’m planning to do this for CSS property names, which is the motivation for this change), or to have the type system help us avoid mix up unrelated things (this is why we had a `Namespace` type ever before this change).
Introducing new types helped me find a bug: when creating a new attribute `dom::Element::set_style_attr`, would pass `Some(atom!("style"))` instead of `None` (now `Option<html5ever_atoms::Prefix>` instead of `Option<string_cache::Atom>`) to the `prefix` argument of `Attr::new`. I suppose the author of that code confused it with the `local_name` argument.
---
Note that Stylo is not affected by any of this. The `gecko_string_cache` module is unchanged, with a single `Atom` type. The `style` crate conditionally compiles `Prefix` and `LocalName` re-exports for that are both `gecko_string_cache::Atom` on stylo.
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Source-Revision: 5b4cc9568dbd5c15e5d2fbc62719172f11566ffa
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Fixes#13376.
Source-Repo: https://github.com/servo/servo
Source-Revision: 6ef46ab9e4ec08d5f5226d41f0cac77c3584bae9
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CSSOM needs hold potentially multiple references (through `Arc`) to these objects, and then mutate them.
CC @upsuper
r? @mbrubeck
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Source-Repo: https://github.com/servo/servo
Source-Revision: 4e5ad268b15aa222c0d049796dde7c6e7bc0897b
Background:
The changes to Servo code to support Stylo began in the `selectors` crate with making pseudo-elements generic, defined be the user, so that different users (such as Servo and Gecko/Stylo) could have a different set of pseudo-elements supported and parsed. Adding a trait makes sense there since `selectors` is in its own repository and has others users (or at least [one](https://github.com/SimonSapin/kuchiki)).
Then we kind of kept going with the same pattern and added a bunch of traits in the `style` crate to make everything generic, allowing Servo and Gecko/Stylo to do things differently. But we’ve also added a `gecko` Cargo feature to do conditional compilation, at first to enable or disable some CSS properties and values in the Mako templates. Since we’re doing conditional compilation anyway, it’s often easier and simpler to do it more (with `#[cfg(feature = "gecko")]` and `#[cfg(feature = "servo")]`) that to keep adding traits and making everything generic. When a type is generic, any method that we want to call on it needs to be part of some trait.
----
The first several commits move some code around, mostly from `geckolib` to `style` (with `#[cfg(feature = "gecko")]`) but otherwise don’t change much.
The following commits remove some traits and many type parameters through the `style` crate, replacing them with pairs of conditionally-compiled API-compatible items (types, methods, …).
Simplifying code is nice to make it more maintainable, but this is motivated by another change described in https://github.com/servo/servo/pull/12391#issuecomment-232183942. (Porting Servo for that change proved difficult because some code in the `style` crate was becoming generic over `String` vs `Atom`, and this PR will help make that concrete. That change, in turn, is motivated by removing geckolib’s `[replace]` override for string-cache, in order to enable using a single Cargo "workspace" in this repository.)
r? @bholley
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Source-Repo: https://github.com/servo/servo
Source-Revision: 2d01d41a506bcbc7f26a2284b9f42390d6ef96ab
--HG--
rename : servo/ports/geckolib/selector_impl.rs => servo/components/style/gecko_selector_impl.rs
rename : servo/ports/geckolib/values.rs => servo/components/style/gecko_values.rs
rename : servo/ports/geckolib/properties.mako.rs => servo/components/style/properties/gecko.mako.rs
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Source-Repo: https://github.com/servo/servo
Source-Revision: 2a2b88f42c55614f949f218b0444778e8e2bfc78
In rust-url 1.0 the `Url` struct is going to have private fields, and there is no way to to create an aribitrary one without going through the parser.
The plugin never had a clear demonstrated performance benefit, it was made mostly because it was possible and relatively easy at the time.
This commit was originally part of #9840, but it’s taking a while to land and I keep removing new uses of `url!` when rebasing.
r? @nox
Source-Repo: https://github.com/servo/servo
Source-Revision: 3368565b3c6c76e5ce2d170d5c5cfb2f52a56956
This allows, among other things, having different implementations for parsing pseudo{elements, classes} in both `ports/geckolib` and in servo.
Source-Repo: https://github.com/servo/servo
Source-Revision: c11844cbf28054784c8d65781cff20045d8ee48b
This is part of slimming down the dependencies of geckolib.
Source-Repo: https://github.com/servo/servo
Source-Revision: 3680e82cab766a412a969a21c0cdff0c7f97d7bc
Nicolas Silva
Emilio Cobos Álvarez
shindli
Anthony Ramine
Simon Sapin
Tom Tromey
Brad Werth
Alan Jeffrey
Michael Partheil
Nicolas Silva
Josh Matthews
Fernando Jiménez Moreno
Bobby Holley
coalman
mckaymatt
Xidorn Quan
avinash
Ravi Shankar
Manish Goregaokar
Gregory
Emilio Cobos Álvarez
Takanori Ishibashi
Jack Moffitt
Martin Robinson
Cameron McCormack