feat: Allow custom func for handling snippet text edits

lua/rust-tools/config.lua

@@ -14,6 +14,9 @@ local defaults = {
     -- options right now: termopen / quickfix
     executor = require("rust-tools/executors").termopen,
 
+    -- function to expand snippets
+    snippet_func = nil,
+
     -- callback to execute once rust-analyzer is done initializing the workspace
     -- The callback receives one parameter indicating the `health` of the server: "ok" | "warning" | "error"
     on_initialized = nil,

lua/rust-tools/utils/utils.lua

@@ -1,3 +1,5 @@
+local rt = require("rust-tools")
+
 local M = {}
 
 function M.is_windows()
@@ -65,10 +67,20 @@ function M.resize(vertical, amount)
 end
 
 function M.override_apply_text_edits()
+  local override = nil
+  if rt.config.options.tools.snippet_func then
+    print("here")
+    override = rt.config.options.tools.snippet_func
+  else
+    override = function(edits, bufnr, offset_encoding, old)
+      M.snippet_text_edits_to_text_edits(edits)
+      old(edits, bufnr, offset_encoding)
+    end
+  end
+
   local old_func = vim.lsp.util.apply_text_edits
   vim.lsp.util.apply_text_edits = function(edits, bufnr, offset_encoding)
-    M.snippet_text_edits_to_text_edits(edits)
-    old_func(edits, bufnr, offset_encoding)
+    override(edits, bufnr, offset_encoding, old_func)
   end
 end
 
@@ -132,7 +144,6 @@ function M.is_ra_server(client)
     or client.name == "rust_analyzer-standalone"
 end
 
-
 -- sanitize_command_for_debugging substitudes the command arguments so it can be used to run a
 -- debugger.
 --