treesitter: use internal "decorations" buffer

runtime/lua/vim/tshighlighter.lua

@@ -85,7 +85,6 @@ end
 
 function TSHighlighter:on_window(_, _win, _buf, _topline, botline)
   self.iter = nil
-  self.active_nodes = {}
   self.nextrow = 0
   self.botline = botline
   self.redraw_count = self.redraw_count + 1
@@ -107,34 +106,13 @@ function TSHighlighter:on_line(_, _win, buf, line)
     end
     local start_row, start_col, end_row, end_col = node:range()
     local hl = self.id_map[capture]
-    if hl > 0 and active then
-      if start_row == line and end_row == line then
-        a.nvim__put_attr(hl, start_col, end_col)
-      elseif end_row >= line then
-        -- TODO(bfredl): this is quite messy. Togheter with multiline bufhl we should support
-        -- luahl generating multiline highlights (and other kinds of annotations)
-        self.active_nodes[{hl=hl, start_row=start_row, start_col=start_col, end_row=end_row, end_col=end_col}] = true
-      end
+    if hl > 0 and active and end_row >= line then
+      a.nvim__put_attr(hl, start_row, start_col, end_row, end_col)
     end
     if start_row > line then
       self.nextrow = start_row
     end
   end
-  for node,_ in pairs(self.active_nodes) do
-    if node.start_row <= line and node.end_row >= line then
-      local start_col, end_col = node.start_col, node.end_col
-      if node.start_row < line then
-        start_col = 0
-      end
-      if node.end_row > line then
-        end_col = 9000
-      end
-      a.nvim__put_attr(node.hl, start_col, end_col)
-    end
-    if node.end_row <= line then
-      self.active_nodes[node] = nil
-    end
-  end
   self.line_count[line] = (self.line_count[line] or 0) + 1
   --return tostring(self.line_count[line])
 end

src/nvim/api/vim.c

@@ -2598,7 +2598,8 @@ Array nvim__inspect_cell(Integer grid, Integer row, Integer col, Error *err)
 /// interface should probably be derived from a reformed
 /// bufhl/virttext interface with full support for multi-line
 /// ranges etc
-void nvim__put_attr(Integer id, Integer c0, Integer c1)
+void nvim__put_attr(Integer id, Integer start_row, Integer start_col,
+                    Integer end_row, Integer end_col)
   FUNC_API_LUA_ONLY
 {
   if (!lua_attr_active) {
@@ -2608,10 +2609,8 @@ void nvim__put_attr(Integer id, Integer c0, Integer c1)
     return;
   }
   int attr = syn_id2attr((int)id);
-  c0 = MAX(c0, 0);
-  c1 = MIN(c1, (Integer)lua_attr_bufsize);
-  for (Integer c = c0; c < c1; c++) {
-    lua_attr_buf[c] = (sattr_T)hl_combine_attr(lua_attr_buf[c], (int)attr);
+  if (attr == 0) {
+    return;
   }
-  return;
+  decoration_state_add_tmp(attr, start_row, start_col, end_row, end_col);
 }

src/nvim/extmark.c

@@ -756,17 +756,18 @@ VirtText *extmark_find_virttext(buf_T *buf, int row, uint64_t ns_id)
   return NULL;
 }
 
-
+// TODO: use decoration_state prefix
 bool extmark_decorations_reset(buf_T *buf, DecorationState *state)
 {
   state->row = -1;
-  return buf->b_extmark_index;
+  kv_size(state->active) = 0;
+  // TODO: for tmp decorations!
+  return buf->b_extmark_index || true;
 }
 
 
 bool extmark_decorations_start(buf_T *buf, int top_row, DecorationState *state)
 {
-  kv_size(state->active) = 0;
   state->top_row = top_row;
   marktree_itr_get(buf->b_marktree, top_row, 0, state->itr);
   if (!state->itr->node) {

src/nvim/globals.h

@@ -127,10 +127,6 @@ typedef off_t off_T;
 EXTERN int mod_mask INIT(= 0x0);                /* current key modifiers */
 
 
-// TODO(bfredl): for the final interface this should find a more suitable
-// location.
-EXTERN sattr_T *lua_attr_buf INIT(= NULL);
-EXTERN size_t lua_attr_bufsize INIT(= 0);
 EXTERN bool lua_attr_active INIT(= false);
 
 /*

src/nvim/screen.c

@@ -637,6 +637,15 @@ bool win_cursorline_standout(const win_T *wp)
 static DecorationState decorations;
 bool decorations_active = false;
 
+// VERY ad-hoc, should be in mark_extended.c?
+void decoration_state_add_tmp(int attr_id,
+                              int start_row, int start_col,
+                              int end_row, int end_col)
+{
+  kv_push(decorations.active,
+          ((HlRange){ start_row, start_col, end_row, end_col, attr_id, NULL }));
+}
+
 /*
  * Update a single window.
  *
@@ -2311,6 +2320,8 @@ win_line (
 
   char *luatext = NULL;
 
+  buf_T *buf = wp->w_buffer;
+
   if (!number_only) {
     // To speed up the loop below, set extra_check when there is linebreak,
     // trailing white space and/or syntax processing to be done.
@@ -2332,6 +2343,33 @@ win_line (
       }
     }
 
+    if (buf->b_luahl && buf->b_luahl_line != LUA_NOREF) {
+      Error err = ERROR_INIT;
+      // TODO(bfredl): build a macro for the "static array" pattern
+      // in buf_updates_send_changes?
+      FIXED_TEMP_ARRAY(args, 3);
+      args.items[0] = WINDOW_OBJ(wp->handle);
+      args.items[1] = BUFFER_OBJ(buf->handle);
+      args.items[2] = INTEGER_OBJ(lnum-1);
+      lua_attr_active = true;
+      extra_check = true;
+      Object o = executor_exec_lua_cb(buf->b_luahl_line, "line",
+                                      args, true, &err);
+      lua_attr_active = false;
+      if (o.type == kObjectTypeString) {
+        // TODO(bfredl): this is a bit of a hack. A final API should use an
+        // "unified" interface where luahl can add both bufhl and virttext
+        luatext = o.data.string.data;
+        do_virttext = true;
+      } else if (ERROR_SET(&err)) {
+        ELOG("error in luahl line: %s", err.msg);
+        luatext = err.msg;
+        do_virttext = true;
+      }
+      decorations_active = true;  // TODO: huff!
+    }
+
+
     if (decorations_active) {
       has_decorations = extmark_decorations_line(wp->w_buffer, lnum-1,
                                                  &decorations);
@@ -2532,41 +2570,6 @@ win_line (
   line = ml_get_buf(wp->w_buffer, lnum, FALSE);
   ptr = line;
 
-  buf_T *buf = wp->w_buffer;
-  if (buf->b_luahl && buf->b_luahl_line != LUA_NOREF) {
-    size_t size = STRLEN(line);
-    if (lua_attr_bufsize < size) {
-      xfree(lua_attr_buf);
-      lua_attr_buf = xcalloc(size, sizeof(*lua_attr_buf));
-      lua_attr_bufsize = size;
-    } else if (lua_attr_buf) {
-      memset(lua_attr_buf, 0, size * sizeof(*lua_attr_buf));
-    }
-    Error err = ERROR_INIT;
-    // TODO(bfredl): build a macro for the "static array" pattern
-    // in buf_updates_send_changes?
-    FIXED_TEMP_ARRAY(args, 3);
-    args.items[0] = WINDOW_OBJ(wp->handle);
-    args.items[1] = BUFFER_OBJ(buf->handle);
-    args.items[2] = INTEGER_OBJ(lnum-1);
-    lua_attr_active = true;
-    extra_check = true;
-    Object o = executor_exec_lua_cb(buf->b_luahl_line, "line",
-                                    args, true, &err);
-    lua_attr_active = false;
-    if (o.type == kObjectTypeString) {
-      // TODO(bfredl): this is a bit of a hack. A final API should use an
-      // "unified" interface where luahl can add both bufhl and virttext
-      luatext = o.data.string.data;
-      do_virttext = true;
-    } else if (ERROR_SET(&err)) {
-      ELOG("error in luahl line: %s", err.msg);
-      luatext = err.msg;
-      do_virttext = true;
-      api_clear_error(&err);
-    }
-  }
-
   if (has_spell && !number_only) {
     // For checking first word with a capital skip white space.
     if (cap_col == 0) {
@@ -3549,15 +3552,6 @@ win_line (
           }
         }
 
-        // TODO(bfredl): luahl should reuse the "active decorations" buffer
-        if (buf->b_luahl && v > 0 && v < (long)lua_attr_bufsize+1) {
-          if (!attr_pri) {
-            char_attr = hl_combine_attr(char_attr, lua_attr_buf[v-1]);
-          } else {
-            char_attr = hl_combine_attr(lua_attr_buf[v-1], char_attr);
-          }
-        }
-
         if (wp->w_buffer->terminal) {
           char_attr = hl_combine_attr(term_attrs[vcol], char_attr);
         }