Support parsing rgb() and rgba() functions into CSSColor #48827
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This pull request was exported from Phabricator. Differential Revision: D68362477 |
Summary: Right now we preserve the state of the CSSSyntaxParser across multiple data type parse attempts, so long that a data type parser consumes an additional component value. This requires data type parsers to be careful to not consume additional forward tokens if it may lead to parse error. We can make this model a lot simpler by instead resetting the parser to original state on data type parse error. We also introduce `peekComponentValue`, and visitor-less `consumeComponentValue` as a convenience, to allow data type parsers to view future component values without advancing, even if the data type parser does return a value, without needing to manually clone the parser. Changelog: [Internal] Reviewed By: lenaic Differential Revision: D68357624
Summary: This ends up being a not uncommon pattern, so lets make it a bit easier. Changelog: [Internal] Reviewed By: lenaic Differential Revision: D68359563
) Summary: This teaches the CSSColor parser how to handle these functions. There are a surprising amount of edge cases here, including many syntactic options added by the CSS Color Module 4 spec, and some technically invalid examples supported by normalize-color, sometimes working in Chrome. I used the combination of the spec, and existing functionality and tests for `normalize-color`, with the end result supporting a superset of the functionality of both, while being a bit more permissive than either. I still need to add support for the other color functions, and will probably want to share code here, but for now, just implemented everything for the rgb values as a start. Changelog: [Internal] Reviewed By: javache Differential Revision: D68362477
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This pull request was exported from Phabricator. Differential Revision: D68362477 |
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) Summary: This teaches the CSSColor parser how to handle these functions. There are a surprising amount of edge cases here, including many syntactic options added by the CSS Color Module 4 spec, and some technically invalid examples supported by normalize-color, sometimes working in Chrome. I used the combination of the spec, and existing functionality and tests for `normalize-color`, with the end result supporting a superset of the functionality of both, while being a bit more permissive than either. I still need to add support for the other color functions, and will probably want to share code here, but for now, just implemented everything for the rgb values as a start. Changelog: [Internal] Reviewed By: javache Differential Revision: D68362477
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This pull request has been merged in 8803dca. |
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Summary:
This teaches the CSSColor parser how to handle these functions.
There are a surprising amount of edge cases here, including many syntactic options added by the CSS Color Module 4 spec, and some technically invalid examples supported by normalize-color, sometimes working in Chrome.
I used the combination of the spec, and existing functionality and tests for
normalize-color, with the end result supporting a superset of the functionality of both, while being a bit more permissive than either.I still need to add support for the other color functions, and will probably want to share code here, but for now, just implemented everything for the rgb values as a start.
Changelog: [Internal]
Reviewed By: javache
Differential Revision: D68362477