Add a line content iterator.

2026-07-28 18:01:48 +01:00
parent ed020792f6
commit 9c84118e63
9 changed files with 179 additions and 9 deletions
@@ -0,0 +1,26 @@
+#pragma once
+#include "pch.h"
+#include "shard.h"
+
+struct LineIterator {
+  Shard *root = nullptr;
+  std::vector<Branch *> stack;
+  Petal *petal = nullptr;
+  uint32_t petal_offset = 0;
+
+  LineIterator(Shard *r, uint32_t start_line);
+
+  ~LineIterator();
+
+  LineIterator(const LineIterator &) = delete;
+  LineIterator &operator=(const LineIterator &) = delete;
+  LineIterator(LineIterator &&) = default;
+  LineIterator &operator=(LineIterator &&) = default;
+
+  void seek_line(uint32_t line_index);
+  bool next(std::string &line);
+
+private:
+  void descend(Shard *s);
+  bool advance_petal();
+};