5 * Copyright (c) 2009-2010, Sebastian Bergmann <sb@sebastian-bergmann.de>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * * Neither the name of Sebastian Bergmann nor the names of his
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
28 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
34 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
37 * @package PHP_TokenStream
38 * @author Sebastian Bergmann <sb@sebastian-bergmann.de>
39 * @copyright 2009-2010 Sebastian Bergmann <sb@sebastian-bergmann.de>
40 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
41 * @since File available since Release 1.0.0
44 require_once 'PHP/Token/Stream.php';
47 * A caching factory for token stream objects.
49 * @author Sebastian Bergmann <sb@sebastian-bergmann.de>
50 * @copyright 2009-2010 Sebastian Bergmann <sb@sebastian-bergmann.de>
51 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
52 * @version Release: 1.0.1
53 * @link http://github.com/sebastianbergmann/php-token-stream/tree
54 * @since Class available since Release 1.0.0
56 class PHP_Token_Stream_CachingFactory
61 protected static $cache = array();
64 * @param string $filename
65 * @return PHP_Token_Stream
67 public static function get($filename)
69 if (!isset(self::$cache[$filename])) {
70 self::$cache[$filename] = new PHP_Token_Stream($filename);
73 return self::$cache[$filename];