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style: CSS comp funcs should handle NaN contagiously

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If NaN is given as any input to CSS comp funcs (min/max/clamp), it
should return NaN. Does not cover simplification (see Bug 1820412).

Adjusted WPT test expectations, 18 newly pass. 🎉

Differential Revision: https://phabricator.services.mozilla.com/D171659
This commit is contained in:
CanadaHonk 2023-03-28 07:24:46 +00:00 • committed by Martin Robinson
parent 191c7cdb78
commit d2217be803
1 changed files with 16 additions and 0 deletions
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16
components/style/values/generics/calc.rs
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@ -449,8 +449,19 @@ impl<L: CalcNodeLeaf> CalcNode<L> {
},
Self::MinMax(ref nodes, op) => {
let mut result = nodes[0].resolve_internal(leaf_to_output_fn)?;
if result.is_nan() {
return Ok(result);
}
for node in nodes.iter().skip(1) {
let candidate = node.resolve_internal(leaf_to_output_fn)?;
if candidate.is_nan() {
result = candidate;
break;
}
let candidate_wins = match op {
MinMaxOp::Min => candidate < result,
MinMaxOp::Max => candidate > result,
@ -477,6 +488,11 @@ impl<L: CalcNodeLeaf> CalcNode<L> {
if result < min {
result = min
}
if min.is_nan() || center.is_nan() || max.is_nan() {
result = <O as Float>::nan();
}
result
},
Self::Round {