Merge pull request #8221 from bfredl/hlstate

UI grid protocol revision: line based updates and semantic highlights

1 files changed, 20 insertions, 0 deletions

diff --git a/src/nvim/api/vim.c b/src/nvim/api/vim.c
index 03567ddfd8..1ffae8ef43 100644
--- a/src/nvim/api/vim.c
+++ b/src/nvim/api/vim.c
@@ -21,6 +21,7 @@
 #include "nvim/vim.h"
 #include "nvim/buffer.h"
 #include "nvim/file_search.h"
+#include "nvim/highlight.h"
 #include "nvim/window.h"
 #include "nvim/types.h"
 #include "nvim/ex_docmd.h"
@@ -1850,3 +1851,22 @@ Object nvim_get_proc(Integer pid, Error *err)
 #endif
   return rvobj;
 }
+
+/// NB: if your UI doesn't use hlstate, this will not return hlstate first time
+Array nvim__inspect_cell(Integer row, Integer col, Error *err)
+{
+  Array ret = ARRAY_DICT_INIT;
+  if (row < 0 || row >= screen_Rows
+      || col < 0 || col >= screen_Columns) {
+    return ret;
+  }
+  size_t off = LineOffset[(size_t)row] + (size_t)col;
+  ADD(ret, STRING_OBJ(cstr_to_string((char *)ScreenLines[off])));
+  int attr = ScreenAttrs[off];
+  ADD(ret, DICTIONARY_OBJ(hl_get_attr_by_id(attr, true, err)));
+  // will not work first time
+  if (!highlight_use_hlstate()) {
+    ADD(ret, ARRAY_OBJ(hl_inspect(attr)));
+  }
+  return ret;
+}