Add iterator functions to walk through text

1 files changed, 11 insertions, 1 deletions

diff --git a/editor.h b/editor.h
index 1273d6f..bde4da9 100644
--- a/editor.h
+++ b/editor.h
@@ -1,6 +1,13 @@
 #include <stdbool.h>
 
 typedef struct Editor Editor;
+typedef struct Piece Piece;
+
+typedef struct {
+	const char const *text;
+	/* const */ size_t len;
+	const Piece const *piece;
+} Iterator;
 
 typedef bool (*iterator_callback_t)(void *, size_t pos, const char *content, size_t len);
 
@@ -11,7 +18,10 @@ bool editor_replace(Editor*, size_t pos, char *c);
 void editor_snapshot(Editor*);
 bool editor_undo(Editor*);
 bool editor_redo(Editor*);
-//char *editor_get(Editor*, size_t pos, size_t len);
+Iterator editor_iterator_get(Editor*, size_t pos);
+bool editor_iterator_valid(const Iterator*);
+void editor_iterator_next(Iterator*);
+void editor_iterator_prev(Iterator*);
 void editor_iterate(Editor*, void *, size_t pos, iterator_callback_t);
 bool editor_modified(Editor*);
 int editor_save(Editor*, const char *file);