feat: add treesitter utils

lua/gopher/_utils/ts/init.lua

@@ -0,0 +1,34 @@
+local nodes = require "gopher._utils.ts.nodes"
+local M = {
+  querys = {
+    struct_block = [[((type_declaration (type_spec name:(type_identifier) @struct.name type: (struct_type)))@struct.declaration)]],
+    em_struct_block = [[(field_declaration name:(field_identifier)@struct.name type: (struct_type)) @struct.declaration]],
+  },
+}
+
+---@return table
+local function get_name_defaults()
+  return {
+    ["func"] = "function",
+    ["if"] = "if",
+    ["else"] = "else",
+    ["for"] = "for",
+  }
+end
+
+---@param row any
+---@param col any
+---@param bufnr any
+---@return table|nil
+function M.get_struct_node_at_pos(row, col, bufnr)
+  local query = M.querys.struct_block .. " " .. M.querys.em_struct_block
+  local bufn = bufnr or vim.api.nvim_get_current_buf()
+  local ns = nodes.nodes_at_cursor(query, get_name_defaults(), bufn, row, col)
+  if ns == nil then
+    print "struct not found"
+  else
+    return ns[#ns]
+  end
+end
+
+return M