Fix flickering when using LSP

lua/nvim-highlight-colors/utils.lua

@@ -31,12 +31,14 @@ local function create_highlight_name(color_value)
  return 'nvim-highlight-colors-' .. string.gsub(color_value, "#", ""):gsub("[!(),%s%.-/%%=:\"']+", "")
 end
 
+local LSP_CACHE = {}
+
 
 ---Creates the highlight based on the received params
 ---@param active_buffer_id number
 ---@param ns_id number
 ---@param data {row: number, start_column: number, end_column: number, value: string}
----@param options {custom_colors: table, render: string, virtual_symbol: string, virtual_symbol_suffix: string, virtual_symbol_position: 'inline' | 'eol' | 'eow', enable_short_hex: bool}
+---@param options {custom_colors: table, render: string, virtual_symbol: string, virtual_symbol_suffix: string, virtual_symbol_position: 'inline' | 'eol' | 'eow', enable_short_hex: boolean}
 ---
 ---For `options.custom_colors`, a table with the following structure is expected:
 ---* `label`: A string representing a template for the color name, likely using placeholders for the theme name. (e.g., '%-%-theme%-primary%-color')
@@ -167,27 +169,51 @@ end
 function M.highlight_with_lsp(active_buffer_id, ns_id, positions, options)
  local param = { textDocument = vim.lsp.util.make_text_document_params() }
  local clients = M.get_lsp_clients()
+ M.highlight_cached_lsp_colors(active_buffer_id, ns_id, options)
+
  for _, client in pairs(clients) do
+ if not LSP_CACHE[client.name] then
+ LSP_CACHE[client.name] = {}
+ end
  if client.server_capabilities.colorProvider then
  client.request(
  "textDocument/documentColor",
  param,
  function(_, response)
- M.highlight_lsp_document_color(
+ local results = M.highlight_lsp_document_color(
  response,
  active_buffer_id,
  ns_id,
  positions,
  options
  )
+ LSP_CACHE[client.name]['documentColor'] = results
  end,
  active_buffer_id
  )
  end
  end
 end
 
+function M.highlight_cached_lsp_colors(active_buffer_id, ns_id, options)
+ for _, request_type in pairs(LSP_CACHE) do
+ if request_type then
+ for _, result_table in pairs(request_type) do
+ for _, result in pairs(result_table) do
+ M.create_highlight(
+ active_buffer_id,
+ ns_id,
+ result,
+ options
+ )
+ end
+ end
+ end
+ end
+end
+
 function M.highlight_lsp_document_color(response, active_buffer_id, ns_id, positions, options)
+ local results = {}
  if response == nil then
  return
  end
@@ -209,21 +235,25 @@ function M.highlight_lsp_document_color(response, active_buffer_id, ns_id, posit
  and position.value == value
  end
  ) > 0
+ local result = {
+ row = row,
+ start_column = start_column,
+ end_column = end_column,
+ value = value
+ }
 
  if (not is_already_highlighted) then
  M.create_highlight(
  active_buffer_id,
  ns_id,
- {
- row = row,
- start_column = start_column,
- end_column = end_column,
- value = value
- },
+ result,
  options
  )
  end
+ table.insert(results, result)
  end
+
+ return results
 end
 
 function M.has_tailwind_css_lsp()