178      * @param string          $prefix  The prefix
184     public function add($prefix, $paths, $prepend = false)  argument
186         if (!$prefix) {
202         $first = $prefix[0];
203         if (!isset($this->prefixesPsr0[$first][$prefix])) {
204             $this->prefixesPsr0[$first][$prefix] = (array) $paths;
209             $this->prefixesPsr0[$first][$prefix] = array_merge(
211                 $this->prefixesPsr0[$first][$prefix]
214             $this->prefixesPsr0[$first][$prefix] = array_merge(
215                 $this->prefixesPsr0[$first][$prefix],
225      * @param string          $prefix  The prefix/namespace, with trailing '\\'
233     public function addPsr4($prefix, $paths, $prepend = false)  argument
235         if (!$prefix) {
248         } elseif (!isset($this->prefixDirsPsr4[$prefix])) {
250             $length = strlen($prefix);
251             if ('\\' !== $prefix[$length - 1]) {
254             $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
255             $this->prefixDirsPsr4[$prefix] = (array) $paths;
258             $this->prefixDirsPsr4[$prefix] = array_merge(
260                 $this->prefixDirsPsr4[$prefix]
264             $this->prefixDirsPsr4[$prefix] = array_merge(
265                 $this->prefixDirsPsr4[$prefix],
275      * @param string          $prefix The prefix
280     public function set($prefix, $paths)  argument
282         if (!$prefix) {
285             $this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
293      * @param string          $prefix The prefix/namespace, with trailing '\\'
300     public function setPsr4($prefix, $paths)  argument
302         if (!$prefix) {
305             $length = strlen($prefix);
306             if ('\\' !== $prefix[$length - 1]) {
309             $this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
310             $this->prefixDirsPsr4[$prefix] = (array) $paths;
533             foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
534                 if (0 === strpos($class, $prefix)) {