shed biking: it's always extmarks, never marks extended

src/nvim/extmark.h

@@ -0,0 +1,93 @@
+#ifndef NVIM_EXTMARK_H
+#define NVIM_EXTMARK_H
+
+#include "nvim/buffer_defs.h"
+#include "nvim/extmark_defs.h"
+#include "nvim/marktree.h"
+
+EXTERN int extmark_splice_pending INIT(= 0);
+
+typedef struct
+{
+  uint64_t ns_id;
+  uint64_t mark_id;
+  int row;
+  colnr_T col;
+} ExtmarkInfo;
+
+typedef kvec_t(ExtmarkInfo) ExtmarkArray;
+
+
+// delete the columns between mincol and endcol
+typedef struct {
+  int start_row;
+  colnr_T start_col;
+  int oldextent_row;
+  colnr_T oldextent_col;
+  int newextent_row;
+  colnr_T newextent_col;
+} ExtmarkSplice;
+
+// adjust marks after :move operation
+typedef struct {
+  int start_row;
+  int start_col;
+  int extent_row;
+  int extent_col;
+  int new_row;
+  int new_col;
+} ExtmarkMove;
+
+// extmark was updated
+typedef struct {
+  uint64_t mark;  // raw mark id of the marktree
+  int old_row;
+  colnr_T old_col;
+  int row;
+  colnr_T col;
+} ExtmarkSavePos;
+
+typedef enum {
+  kExtmarkSplice,
+  kExtmarkMove,
+  kExtmarkUpdate,
+  kExtmarkSavePos,
+  kExtmarkClear,
+} UndoObjectType;
+
+// TODO(bfredl): reduce the number of undo action types
+struct undo_object {
+  UndoObjectType type;
+  union {
+    ExtmarkSplice splice;
+    ExtmarkMove move;
+    ExtmarkSavePos savepos;
+  } data;
+};
+
+
+typedef struct {
+  int start_row;
+  int start_col;
+  int end_row;
+  int end_col;
+  int attr_id;
+  VirtText *virt_text;
+} HlRange;
+
+typedef struct {
+  MarkTreeIter itr[1];
+  kvec_t(HlRange) active;
+  int top_row;
+  int row;
+  int col_until;
+  int current;
+  VirtText *virt_text;
+} DecorationState;
+
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "extmark.h.generated.h"
+#endif
+
+#endif  // NVIM_EXTMARK_H