refactor(lsp): drop once(), use _memoize() #37829

runtime/lua/vim/lsp.lua

@@ -113,26 +113,6 @@ function lsp._buf_get_full_text(bufnr)
   return text
 end
 
---- Memoizes a function. On first run, the function return value is saved and
---- immediately returned on subsequent runs. If the function returns a multival,
---- only the first returned value will be memoized and returned. The function will only be run once,
---- even if it has side effects.
----
----@generic T: function
----@param fn (T) Function to run
----@return T
-local function once(fn)
-  local value --- @type function
-  local ran = false
-  return function(...)
-    if not ran then
-      value = fn(...) --- @type function
-      ran = true
-    end
-    return value
-  end
-end
-
 --- @param client vim.lsp.Client
 --- @param config vim.lsp.ClientConfig
 --- @return boolean
@@ -832,7 +812,7 @@ end
 local function text_document_did_save_handler(bufnr)
   bufnr = vim._resolve_bufnr(bufnr)
   local uri = vim.uri_from_bufnr(bufnr)
-  local text = once(lsp._buf_get_full_text)
+  local text = vim.func._memoize('concat', lsp._buf_get_full_text)
   for _, client in ipairs(lsp.get_clients({ bufnr = bufnr })) do
     local name = api.nvim_buf_get_name(bufnr)
     local old_name = changetracking._get_and_set_name(client, bufnr, name)