Otherwise the serialisation wouldn't roundtrip with the new syntax, which fixes
the position of <overflow-position>.
Also make Servo and Gecko agree on whether to serialize "unsafe".
Bug: 1430817
MozReview-Commit-ID: L3GSMk5pZ3F
This enables us to implement Element::has_css_layout_box() in a more
direct way, and also enables us to remove some of the existing more
specific queries.
Fixes#19811.
Use specific assertions
Similar to #19865
r? jdm
Note: Should I squash all the commits into one commit?
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style: make the try_match_ident_ignore_ascii_case macro actually return the error.
This allows it to be used as an expression, which I'd like to do very soon.
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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.
It makes no sense to pass a custom base size of zero in presence of rem, ex, or
ch units.
Bug: 1431031
Reviewed-by: Manishearth
MozReview-Commit-ID: 7ZZwRzQKREX
style: Move -moz-context-properties outside of mako.
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Sub-PR of #19015
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style: Remove -servo-text-decorations-in-effect
It is bogus, because it depends on the display property as it's cascaded, but
the display property can change afterwards, for example, if we get blockified
because we're the root element or a flex item.
Replace it with a normal field instead.
Also, it carries some weight, because it's the last property that uses this
concept of "derived" property, and "custom cascade". So we can remove some code
after this.
Compute it after the cascade process in StyleAdjuster.
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It is bogus, because it depends on the display property as it's cascaded, but
the display property can change afterwards, for example, if we get blockified
because we're the root element or a flex item.
Replace it with a normal field instead.
Also, it carries some weight, because it's the last property that uses this
concept of "derived" property, and "custom cascade". So we can remove some code
after this.
Compute it after the cascade process in StyleAdjuster.
style: Move text-align outside of the mako file.
I will need this refactoring before my next job. I didn't actually fix the FIXME's along the way. My other PR probably will cover these.
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style: Cleanup Angle parsing.
This PR also contains a functional change, allowing to parse unitless zero angles in hue-rotate().
See the links and the comments for why.
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