1 files changed, 95 insertions, 0 deletions
diff --git a/Benchmarks/ParseBenchmarkTarget/ParseBenchmarkTarget.swift b/Benchmarks/ParseBenchmarkTarget/ParseBenchmarkTarget.swift
new file mode 100644
index 0000000..91e1d38
--- /dev/null
+++ b/Benchmarks/ParseBenchmarkTarget/ParseBenchmarkTarget.swift
@@ -0,0 +1,95 @@
+import Benchmark
+import Foundation
+import NorgKit
+
+let benchmarks: @Sendable () -> Benchmark? = {
+  // Load the norg files from the Documentation directory.
+  let fileManager = FileManager.default
+  let currentDirectory = fileManager.currentDirectoryPath
+  let documentationPath = (currentDirectory as NSString).appendingPathComponent("Documentation")
+
+  let examplePath = (documentationPath as NSString).appendingPathComponent("example.norg")
+  let hugePath = (documentationPath as NSString).appendingPathComponent("huge.norg")
+
+  let exampleSource: String
+  let hugeSource: String
+
+  do {
+    exampleSource = try String(contentsOfFile: examplePath, encoding: .utf8)
+  } catch {
+    print("Current directory: \(currentDirectory)")
+    print("Failed to load example.norg from: \(examplePath)")
+    print("Error: \(error)")
+    fatalError("Failed to load example.norg")
+  }
+
+  do {
+    hugeSource = try String(contentsOfFile: hugePath, encoding: .utf8)
+  } catch {
+    print("Failed to load huge.norg from: \(hugePath)")
+    print("Error: \(error)")
+    fatalError("Failed to load huge.norg")
+  }
+
+  Benchmark.defaultConfiguration.maxDuration = .seconds(3)
+  Benchmark.defaultConfiguration.maxIterations = 500
+
+  let fileURL = URL(fileURLWithPath: "/vault/today.norg")
+
+  Benchmark("parse example") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(NorgParser.parse(exampleSource))
+    }
+  }
+
+  Benchmark("parse huge") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(NorgParser.parse(hugeSource))
+    }
+  }
+
+  // Same parse, plus the tree-folding pass — the delta against "parse …" above
+  // is the cost of building the hierarchy.
+  Benchmark("parse tree example") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(NorgParser.parseTree(exampleSource))
+    }
+  }
+
+  Benchmark("parse tree huge") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(NorgParser.parseTree(hugeSource))
+    }
+  }
+
+  // Just the fold, over an already-parsed document, to isolate its cost.
+  let hugeDocument = NorgParser.parse(hugeSource)
+  Benchmark("fold huge") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(hugeDocument.tree())
+    }
+  }
+
+  // Task scanning is meant to be cheap enough to run across an entire vault, so
+  // it bypasses the full block parser.
+  Benchmark("scan tasks example") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(TaskScanner.scan(content: exampleSource, fileURL: fileURL))
+    }
+  }
+
+  Benchmark("scan tasks huge") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(TaskScanner.scan(content: hugeSource, fileURL: fileURL))
+    }
+  }
+
+  // Rewriting a single status marker — the write-back path for toggling a task.
+  // Line 17 (zero-based) is the first task in huge.norg, so this exercises the
+  // full split / replace / re-join path rather than bailing out early.
+  return Benchmark("update task status huge") { benchmark in
+    for _ in benchmark.scaledIterations {
+      blackHole(TaskScanner.updatedContent(hugeSource, line: 17, to: .done))
+    }
+  }
+}