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Changelog

All notable changes to this project are documented here. Format follows Keep a Changelog; versioning follows Semantic Versioning.

[2.0.0] - 2026-04-30

Major redesign around an Expression enum and an evaluator protocol, plus key-value token support driven by The Archive v2 search architecture.

Added

  • Expression.keyValue(key:value:) case for key:value tokens (tag:bar, title:"hello world").
  • KeyValueExtractor in the tokenizer; escaping with \tag:bar produces a plain .contains node.
  • ExpressionEvaluator protocol and iterative evaluate(_:with:) driver. Default Bool implementations cover evaluateAnything / evaluateNot / evaluateAnd / evaluateOr.
  • StringContainmentEvaluator — built-in full-text evaluator using lowercased C-strings + strstr.
  • keyValueNodes(in:) -> [(key: String, value: String)] for pre-flight tree inspection.
  • Sendable conformance on Expression.
  • Expression conforms to CustomStringConvertible and Equatable.

Changed

  • Expression is now an enum (.anything, .contains, .not, .and, .or, .keyValue) instead of a protocol with AnythingNode / ContainsNode / NotNode / AndNode / OrNode structs.
  • Parser and evaluator are now iterative; recursion-limit configuration is gone.
  • Swift tools version bumped to 6.2; minimum platform raised to macOS 13.

Removed

  • Expression.isSatisfied(by:) — call evaluate(_:with: StringContainmentEvaluator(...)) instead.
  • StringExpressionSatisfiable / CStringExpressionSatisfiable protocols — implement ExpressionEvaluator for custom matching backends.
  • Per-node node types (AnythingNode, ContainsNode, NotNode, AndNode, OrNode) — use the enum cases.
  • macOS 10.13 support.

[1.2.0] and earlier

See git history.