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Fuzzy Search optimization #57

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Merged
bleroy merged 2 commits into from
Apr 1, 2026
Merged

Fuzzy Search optimization #57

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59d9bd8
Fuzzy Search optimization
Mar 31, 2026
39145f5
Revert Any => Count
Mar 31, 2026
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9 changes: 9 additions & 0 deletions LunrCore/TokenSet.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,8 @@ public static TokenSet FromFuzzyString(
idProvider ??= TokenSetIdProvider.Instance;
var root = new TokenSet(idProvider);

var seen = new HashSet<(int nodeId, string frameStr, int editsRemaining)>();

var stack = new Stack<(TokenSet node, int editsRemaining, string str)>();
stack.Push((
node: root,
Expand All @@ -111,6 +113,13 @@ public static TokenSet FromFuzzyString(
{
(TokenSet frameNode, int frameEditsRemaining, string frameStr) = stack.Pop();

// skip if already processed
var stateKey = (frameNode.Id, frameStr, frameEditsRemaining);
if (!seen.Add(stateKey))
{
continue;
}

// no edit
if (frameStr.Length > 0)
{
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