This moves most of the code to be Rust, except potentially some evaluator
functions, and allows to unblock the use case from any-hover / any-pointer and
remove nsMediaFeatures.
Differential Revision: https://phabricator.services.mozilla.com/D2976
The values in the boolean context depend on its feature. For examples, in the
case of prefers-reduced-motion 'no-preference' means false and 'reduced' mean
true in the boolean context, whereas in the case of prefers-contrast
'no-preference' means false and other two values, 'high' and 'low' means true
in the boolean context. To support it we introduce a child struct of
nsCSSKTableEntry that has an additional field representing the value in the
boolean context and use it when we have no specified value in the media feature
(i.e. in the boolean context).
Bug: 1365045
Reviewed-by: heycam
MozReview-Commit-ID: 79HiW8l5ous
Do it so that we always try to evaluate the media expression and the modern
syntax last, so that the most specific error message comes up.
Bug: 1422225
Reviewed-by: xidorn
MozReview-Commit-ID: 2tqdAsWh6Kh
Which is more appropriate, given it represents a `<media-feature>` per spec, and
expression is a bit overloaded :)
Bug: 1422225
Reviewed-by: xidorn
MozReview-Commit-ID: Fed1nJhHxDu
The only bit from the spec which I haven't implemented to my knowledge is the
bit that allows you to swap the position of the media feature and the value,
because it unnecessarily complicates parsing (we parse the value in terms of the
feature), and I don't think it's useful given how easy it is to switch from,
e.g., `(500px > width)` to `(width <= 500px)`.
I filed https://github.com/w3c/csswg-drafts/issues/2791 about it.
Bug: 1422225
Reviewed-by: xidorn
MozReview-Commit-ID: 6xrdVl87S9X
Media feature names are converted to lower case before being processed, making
them effectively case-insensitive.
Prefixes ("min-", etc.) and values are already treated in a case-insensitive
manner.
Bug: 1464091
Reviewed-by: heycam
MozReview-Commit-ID: JUeeEQEMIi4
This more concrete wrapper type can write a prefix the very first time something
is written to it. This allows removing plenty of useless monomorphisations caused
by the former W/SequenceWriter<W> pair of types.
Returning a zero-sized viewport in the case there's no shell / pres context.
For now, no other change yet. After this we can start tweaking the ShadowRoot
Stylist setup, and even try to return computed styles without a document \o/.
Bug: 1430608
MozReview-Commit-ID: 3cT2PKQISri
Constified enums are default now. I think I want to introduce an option to
bindgen to allow setting the default enum behavior, but it doesn't need to block
this.
The ServoBindings.toml changes are somewhat hacky, but that's because of
https://github.com/rust-lang-nursery/rust-bindgen/issues/1125.
Also, the fixups now need to account for whitespace, since quote generates stuff
like root :: nsString, and we don't rustfmt the bindings if there's no rustfmt
installed.
Bug: 1412486
Reviewed-by: xidorn
MozReview-Commit-ID: EY5eNnCiTIw
It's a sub-class of nsAtom, useful for cases where you know you are dealing
exclusively with static atoms. The nice thing about it is that you can use
raw nsStaticAtom pointers instead of RefPtr<>. (In fact, the AddRef/Release
implementations ensure that we'll crash if we use RefPtr<nsStaticAtom>.)
Fixes warnings from rust-lang/rust#44229 when `--enable-commonmark` is
passed to rustdoc.
This is mostly a global find-and-replace for bare URIs on lines by
themselves in doc comments.
Change MediaExpressionValue::from_css_value to only accept pixels
MozReview-Commit-ID: Hn3twVa8xLo
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This avoids grabbing the document when values that inherit from the body,
whatever that means, aren't under the body.
In that case we'll get a semi-random value, but that's also mishandled by Gecko
anyways (and probably Blink, though haven't tested), and doesn't really make
much sense.
