Chris@0: <?php
Chris@0: /*
Chris@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
Chris@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
Chris@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
Chris@0:  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
Chris@0:  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
Chris@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
Chris@0:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Chris@0:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Chris@0:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Chris@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Chris@0:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Chris@0:  *
Chris@0:  * This software consists of voluntary contributions made by many individuals
Chris@0:  * and is licensed under the MIT license. For more information, see
Chris@0:  * <http://www.doctrine-project.org>.
Chris@0:  */
Chris@0: 
Chris@0: namespace Doctrine\Common\Annotations;
Chris@0: 
Chris@0: use SplFileObject;
Chris@0: 
Chris@0: /**
Chris@0:  * Parses a file for namespaces/use/class declarations.
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  * @author Christian Kaps <christian.kaps@mohiva.com>
Chris@0:  */
Chris@0: final class PhpParser
Chris@0: {
Chris@0:     /**
Chris@0:      * Parses a class.
Chris@0:      *
Chris@0:      * @param \ReflectionClass $class A <code>ReflectionClass</code> object.
Chris@0:      *
Chris@0:      * @return array A list with use statements in the form (Alias => FQN).
Chris@0:      */
Chris@0:     public function parseClass(\ReflectionClass $class)
Chris@0:     {
Chris@0:         if (method_exists($class, 'getUseStatements')) {
Chris@0:             return $class->getUseStatements();
Chris@0:         }
Chris@0: 
Chris@12:         if (false === $filename = $class->getFileName()) {
Chris@0:             return array();
Chris@0:         }
Chris@0: 
Chris@0:         $content = $this->getFileContent($filename, $class->getStartLine());
Chris@0: 
Chris@0:         if (null === $content) {
Chris@0:             return array();
Chris@0:         }
Chris@0: 
Chris@0:         $namespace = preg_quote($class->getNamespaceName());
Chris@0:         $content = preg_replace('/^.*?(\bnamespace\s+' . $namespace . '\s*[;{].*)$/s', '\\1', $content);
Chris@0:         $tokenizer = new TokenParser('<?php ' . $content);
Chris@0: 
Chris@0:         $statements = $tokenizer->parseUseStatements($class->getNamespaceName());
Chris@0: 
Chris@0:         return $statements;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Gets the content of the file right up to the given line number.
Chris@0:      *
Chris@0:      * @param string  $filename   The name of the file to load.
Chris@0:      * @param integer $lineNumber The number of lines to read from file.
Chris@0:      *
Chris@12:      * @return string|null The content of the file or null if the file does not exist.
Chris@0:      */
Chris@0:     private function getFileContent($filename, $lineNumber)
Chris@0:     {
Chris@0:         if ( ! is_file($filename)) {
Chris@0:             return null;
Chris@0:         }
Chris@0: 
Chris@0:         $content = '';
Chris@0:         $lineCnt = 0;
Chris@0:         $file = new SplFileObject($filename);
Chris@0:         while (!$file->eof()) {
Chris@0:             if ($lineCnt++ == $lineNumber) {
Chris@0:                 break;
Chris@0:             }
Chris@0: 
Chris@0:             $content .= $file->fgets();
Chris@0:         }
Chris@0: 
Chris@0:         return $content;
Chris@0:     }
Chris@0: }