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LibWeb: Clamp and censor top-level calc results

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We now clamp the values returned from calc into the allowed range (where
we know it) and censor any `NaN`s to `0` both when we resolve and when
we serialize.

Gains us 76 WPT passes.
This commit is contained in:
Callum Law 2025-08-06 16:29:12 +12:00 • committed by Sam Atkins
commit 778da0175e
Notes: github-actions[bot] 2025-08-11 16:11:10 +00:00
15 changed files with 361 additions and 74 deletions
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6
Tests/LibWeb/Text/expected/wpt-import/css/css-flexbox/parsing/flex-basis-computed.txt
View file

@ -2,8 +2,8 @@ Harness status: OK
Found 12 tests
10 Pass
2 Fail
11 Pass
1 Fail
Pass Property flex-basis value '1px'
Pass Property flex-basis value '400%'
Pass Property flex-basis value 'auto'
@ -12,7 +12,7 @@ Pass Property flex-basis value 'fit-content'
Pass Property flex-basis value 'min-content'
Pass Property flex-basis value 'max-content'
Pass Property flex-basis value 'calc(10px + 0.5em)'
Fail Property flex-basis value 'calc(10px - 0.5em)'
Pass Property flex-basis value 'calc(10px - 0.5em)'
Pass Property flex-basis value 'calc(10%)'
Pass Property flex-basis value 'calc(0% + 10px)'
Fail Property flex-basis value 'calc(10% + 0px)'

5
Tests/LibWeb/Text/expected/wpt-import/css/css-flexbox/parsing/flex-computed.txt
View file

@ -2,8 +2,7 @@ Harness status: OK
Found 8 tests
7 Pass
1 Fail
8 Pass
Pass Property flex value 'none'
Pass Property flex value '1'
Pass Property flex value '2 3'
@ -11,4 +10,4 @@ Pass Property flex value '4 5 6px'
Pass Property flex value '7% 8'
Pass Property flex value '8 auto'
Pass Property flex value 'calc(10px + 0.5em)'
Fail Property flex value 'calc(10px - 0.5em)'
Pass Property flex value 'calc(10px - 0.5em)'