Rearrange project files.

include/internal/vase/vase.h

@@ -0,0 +1,100 @@
+#pragma once
+
+#include "buffer/append.h"
+#include "buffer/original.h"
+#include "constants.h"
+#include "iterators/line.h"
+#include "pch.h"
+#include "search.h"
+#include "shard.h"
+
+struct Point {
+  uint64_t row;
+  uint64_t col;
+};
+
+struct Range {
+  Point start;
+  Point end;
+};
+
+struct RegexGroup {
+  uint64_t start{UINT32_MAX};
+  uint64_t end{UINT32_MAX};
+};
+
+struct RegexMatch {
+  uint64_t start;
+  uint64_t end;
+  RegexGroup groups[9]{};
+};
+
+struct ReplacePart {
+  enum struct PartType {
+    FullMatch,
+    CaptureGroup,
+    Constant
+  } type;
+
+  std::variant<uint8_t, Shard *> value;
+};
+
+struct Vase {
+  OriginalBuffer *original;
+  AppendBuffer *append;
+  Shard *root;
+  std::filesystem::path path;
+  std::filesystem::path swapdir;
+
+  Vase(std::filesystem::path path, std::filesystem::path swapdir);
+  ~Vase();
+
+  uint64_t length();
+  std::string to_string();
+  std::string to_string(Range range);
+
+  Point resolve_column(uint64_t line, uint64_t column);
+
+  LineIterator iterate(uint64_t line);
+
+  void insert(Point *point, char key);
+  void insert(Point *point, const char *data, uint64_t len);
+  void erase(Point *point, uint64_t amount, Direction dir);
+  void erase(Range range);
+  void replace(Range range, const char *data, uint64_t len);
+
+  void move_clusters(Point *point, uint64_t amount, Direction dir);
+  void move_lines(Point *point, uint64_t amount, Direction dir);
+  void clamp(Point *point);
+
+  void regex_search_replace(
+    std::string_view pattern, Range range,
+    std::string_view replace, std::string_view options
+  );
+
+  std::vector<Range> regex_search(
+    std::string_view pattern, Range range, std::string_view options
+  );
+
+  bool undo();
+  bool redo();
+  void snapshot();
+  void prune_history(uint64_t n);
+
+  bool save();
+  bool save_swap();
+
+  uint64_t offset_of(Point point);
+  Point point_of(uint64_t offset);
+
+private:
+  std::vector<Shard *> history;
+  uint64_t history_top;
+
+  void _insert(Point *point, const char *data, uint64_t len);
+
+  std::vector<ReplacePart> parse_replace(std::string_view s);
+  std::vector<RegexMatch> _regex_search(
+    std::string_view pattern, Range range, std::string_view options
+  );
+};