, , v-for, or when the children is provided by user // with hand-written render functions / JSX. In such cases a full normalization // is needed to cater to all possible types of children values. /** * @param $children mixed * @param $normalizationType init * @return array|null */ public static function stringify($children, $normalizationType = 1) { if (Atom_Util_Shared::isPrimitive($children)) { return $children; } if ($normalizationType === 1) { return self::simpleStringify($children); } if ($normalizationType === 2 && Atom_Util_Shared::isPlainArray($children)) { return self::stringifyArrayChildren($children); } return ""; } /** * @param $children mixed * @param $normalizationType init * @return array|null */ public static function normalize($children, $normalizationType = 1) { if (Atom_Util_Shared::isPrimitive($children)) { return array($children); } if (Atom_Util_Shared::isPlainArray($children)) { return self::normalizeArrayChildren($children); } return array(); } /** * @param $children mixed * @param $nestedIndex string * @return array */ private static function stringifyArrayChildren($children) { $res = ""; for ($i = 0; $i < count($children); $i++) { $c = $children[$i]; // 表示不认识它，直接遗弃 if ($c == null || is_bool($c)) { continue; } if (Atom_Util_Shared::isPrimitive($c)) { $res .= $c; } // nested else if (Atom_Util_Shared::isPlainArray($c)) { $res .= self::stringifyArrayChildren($c); } } return $res; } /** * @param $children mixed * @param $nestedIndex string * @return array */ private static function normalizeArrayChildren($children) { $res = array(); for ($i = 0; $i < count($children); $i++) { $c = $children[$i]; // 表示不认识它，直接遗弃 if ($c == null || is_bool($c)) { continue; } if (Atom_Util_Shared::isPrimitive($c)) { array_push($res, $c); } // nested else if (Atom_Util_Shared::isPlainArray($c)) { $res = array_merge($res, self::normalizeArrayChildren($c)); } } return $res; } /** * 子节点是否全为空，如果是，就清空它们 * @param $children array * @return array */ public static function skipEmptyChidlren($children) { foreach ($children as $child) { if ($child !== '') { return $children; } } return array(); } }