table.contains = function(self, string)
  for _, v in pairs(self) do
    if v == string then
      return true
    end
  end
  return false
end

return { 'nvim-treesitter/nvim-treesitter',
  disable = vim.version.lt(vim.version(), { 0, 9, 2 }),
  config = function()
    vim.cmd("TSUpdate")
  end,
  function()
    require('nvim-treesitter.configs').setup {
      -- good default parsers
      ensure_installed = { "c", "lua", "vim", "vimdoc", "markdown",
        "markdown_inline", "java", "bash", "css", "html", "luadoc"
      },

      -- install missing parsers
      auto_install = true,

      -- indentation
      indent = {
        enable = true,

        disable = function(lang, buf)
          -- disable indenting in php (it's more broken with than without)
          return table.contains({
            "php"
          }, lang)
        end
      },

      -- enable highlighting
      highlight = {
        enable = true,
        -- use vim highlighting in addition to treesitter
        additional_vim_regex_highlighting = true,

        disable = function(lang, buf)
          -- disable in diff files
          local langs = { "diff" }
          if table.contains(langs, lang) then
            return true
          end

          -- disable in big files
          local ok, stats = pcall(vim.loop.fs_stat, vim.api.nvim_buf_get_name(buf))
          if ok and stats and stats.size > (1024 * 100 * 10) --[[1MB]] then
            return true
          end
        end
      }
    }
  end
}