Make serialization match Gecko in a few corner cases
This addresses the testcases from https://bugzilla.mozilla.org/show_bug.cgi?id=1345218. Gecko differs from the specification by doing the following:
* reusing longhands that have previously been serialized in order to serialize shorthands
* immediately breaking out of the shorthand loop for the current property as soon as a shorthand is successfully serialized
https://github.com/w3c/csswg-drafts/issues/1774 is filed to track ways that the standard could be made more clear on these points.
---
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix [bug 1345218](https://bugzilla.mozilla.org/show_bug.cgi?id=1345218).
- [X] There are tests for these changes
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malloc_size_of tweaks
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A couple of tweaks.
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- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#18473 (github issue number if applicable).
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- [X] These changes do not require tests because they are tested in Gecko.
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Sometimes, we want to use extremely small pixel value in transform, e.g.
translate(calc(0.001px)), which should be rendered correctly together
with scale(100000). This patch only fixes this case for Servo because
Stylo still uses Au on the Gecko side, even if we pass pixel value into
FFI directly in the previous patch.
We replace Au with CSSPixelLength for the length part of
computed::CalcLengthOrPercentage. Therefore, it would be easier to use
CSSPixelLength for all other LengthOrPercentage{*} types.
First, we define computed::CSSPixelLength which contains a CSSFloat, a
pixel value, and then we replace computed::Length with CSSPixelLength.
Therefore, the |ComputedValue| of NoCalcLength, AbsoluteLength,
FontRelativeLength, ViewportPercentageLength, CharacterWidth, and
PhysicalLength is CSSPixelLength.
Besides, we drop NonNegativeAu, and replace computed::NonNegativeLength
with NonNegative<computed::Length>. (i.e. NonNegative<CSSPixelLength>)
Remove get_location_with_offset
Now that rust-cssparser reports 1-based locations, bump the required
cssparser version and remove get_location_with_offset. Previously,
some code paths were not calling get_location_with_offset; see
https://bugzilla.mozilla.org/show_bug.cgi?id=1398869 for some
background.
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix https://bugzilla.mozilla.org/show_bug.cgi?id=1398869 (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because tests are in rust-cssparser and/or M-C
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Measure Arc<Locked<T>> fields properly.
Currently when we measure various Arc<Locked<T>> fields we don't measure the T
itself, but only the descendants of the T. This patch fixes this.
This fix requires introducing a new trait, MallocUnconditionalShallowSizeOf,
which is implemented for servo_arc::Arc. A similar trait,
MallocConditionalShallowSizeOf, is also introduced, though it has no uses as
yet.
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- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).
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- [X] These changes do not require tests because they are tested in Gecko.
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Now that rust-cssparser reports 1-based locations, bump the required
cssparser version and remove get_location_with_offset. Previously,
some code paths were not calling get_location_with_offset; see
https://bugzilla.mozilla.org/show_bug.cgi?id=1398869 for some
background.
Currently when we measure various Arc<Locked<T>> fields we don't measure the T
itself, but only the descendants of the T. This patch fixes this.
This fix requires introducing a new trait, MallocUnconditionalShallowSizeOf,
which is implemented for servo_arc::Arc. A similar trait,
MallocConditionalShallowSizeOf, is also introduced, though it has no uses as
yet.
Overhaul MallocSizeOf and related things.
This patch makes the MallocSizeOf stuff in Stylo work more like the HeapSizeOf
stuff already in Servo, except better. In particular, it adds deriving support
for MallocSizeOf, which will make it easier to improve coverage.
The patch does the following.
- Combines servo/components/style/stylesheets/memory.rs and the heapsize crate
into a new crate, malloc_size_of.
- Forks the heapsize_derive crate, calling it malloc_size_of, so that
MallocSizeOf can be derived.
- Both the new crates have MIT/Apache licenses, like heapsize, in case they are
incorporated into heapsize in the future.
- Renames the methods within MallocSizeOf and the related traits so they are
more concise.
- Removes MallocSizeOfWithGuard.
- Adds `derive(MallocSizeOf)` to a lot of types, in some cases replacing an
equivalent or almost-equivalent hand-written implementation.
- Adds stuff so that Rc/Arc can be handled properly.
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---
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- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [X] These changes do not require tests because tested on Gecko side.
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This patch makes the MallocSizeOf stuff in Stylo work more like the HeapSizeOf
stuff already in Servo, except better. In particular, it adds deriving support
for MallocSizeOf, which will make it easier to improve coverage.
The patch does the following.
- Combines servo/components/style/stylesheets/memory.rs and the heapsize crate
into a new crate, malloc_size_of.
- Forks the heapsize_derive crate, calling it malloc_size_of, so that
MallocSizeOf can be derived.
- Both the new crates have MIT/Apache licenses, like heapsize, in case they are
incorporated into heapsize in the future.
- Renames the methods within MallocSizeOf and the related traits so they are
more concise.
- Removes MallocSizeOfWithGuard.
- Adds `derive(MallocSizeOf)` to a lot of types, in some cases replacing an
equivalent or almost-equivalent hand-written implementation.
- Adds stuff so that Rc/Arc can be handled properly.
stylo: Add support for calcs in base size calculation
This tracks an offset along with the ratio for the keyword font size data.
The offset gets used when a calc is involved whilst inheriting font-size
(it is the computed value of that calc ignoring em/percentage portions,
which go into the ratio). If the family or language changes, the new font
size can be computed by taking the keyword's size in the context of that
family/language, multiplying it by the ratio, and adding the offset.
r=emilio https://bugzilla.mozilla.org/show_bug.cgi?id=1380980
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This tracks an offset along with the ratio for the keyword font size
data. The offset gets used when a calc is involved whilst inheriting
font-size (it is the computed value of that calc ignoring em/percentage
portions, which go into the ratio). If the family or language changes,
the new font size can be computed by taking the keyword's size in the context
of that family/language, multiplying it by the ratio, and adding the
offset.
