182      * @param string          $prefix  The prefix
188     public function add($prefix, $paths, $prepend = false)  argument
190         if (!$prefix) {
206         $first = $prefix[0];
207         if (!isset($this->prefixesPsr0[$first][$prefix])) {
208             $this->prefixesPsr0[$first][$prefix] = (array) $paths;
213             $this->prefixesPsr0[$first][$prefix] = array_merge(
215                 $this->prefixesPsr0[$first][$prefix]
218             $this->prefixesPsr0[$first][$prefix] = array_merge(
219                 $this->prefixesPsr0[$first][$prefix],
229      * @param string          $prefix  The prefix/namespace, with trailing '\\'
237     public function addPsr4($prefix, $paths, $prepend = false)  argument
239         if (!$prefix) {
252         } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
254             $length = strlen($prefix);
255             if ('\\' !== $prefix[$length - 1]) {
258             $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
259             $this->prefixDirsPsr4[$prefix] = (array) $paths;
262             $this->prefixDirsPsr4[$prefix] = array_merge(
264                 $this->prefixDirsPsr4[$prefix]
268             $this->prefixDirsPsr4[$prefix] = array_merge(
269                 $this->prefixDirsPsr4[$prefix],
279      * @param string          $prefix The prefix
284     public function set($prefix, $paths)  argument
286         if (!$prefix) {
289             $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
297      * @param string          $prefix The prefix/namespace, with trailing '\\'
304     public function setPsr4($prefix, $paths)  argument
306         if (!$prefix) {
309             $length = strlen($prefix);
310             if ('\\' !== $prefix[$length - 1]) {
313             $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
314             $this->prefixDirsPsr4[$prefix] = (array) $paths;
537             foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
538                 if (0 === strpos($class, $prefix)) {