perf: probe subtrees directly in Has / HasMatcher#564
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Has(selector) and HasMatcher(m) used to call
s.document.Find(selector)/FindMatcher(m), materializing every matching
descendant in the entire document, then iterate s.Nodes x matchedNodes x
treeDepth via nodeContains to keep the elements that contain one.
This commit probes each selection node's subtree directly with SingleMatcher, which
short-circuits on the first descendant match.
BenchmarkHas (DocW().Find("h2").Has(".editsection")), -count=10:
sec/op B/op
before 61.97µs 744 B
after 3.33µs 360 B
-94.6% -51.6%
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Has(selector) and HasMatcher(m) used to call
s.document.Find(selector)/FindMatcher(m), materializing every matching descendant in the entire document, then iterate s.Nodes x matchedNodes x treeDepth via nodeContains to keep the elements that contain one.
This commit probes each selection node's subtree directly with SingleMatcher, which short-circuits on the first descendant match.
BenchmarkHas (DocW().Find("h2").Has(".editsection")), -count=10: