082a0130c2
Signed-off-by: Gergely POLONKAI (W00d5t0ck) <polesz@w00d5t0ck.info>
203 lines
6.0 KiB
PHP
203 lines
6.0 KiB
PHP
<?php
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/*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\Common\Annotations;
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use SplFileObject;
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/**
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* Parses a file for namespaces/use/class declarations.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Christian Kaps <christian.kaps@mohiva.com>
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*/
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final class PhpParser
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{
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/**
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* The token list.
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*
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* @var array
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*/
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private $tokens;
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/**
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* The number of tokens.
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*
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* @var int
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*/
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private $numTokens = 0;
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/**
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* The current array pointer.
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*
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* @var int
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*/
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private $pointer = 0;
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/**
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* Parses a class.
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*
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* @param \ReflectionClass $class A <code>ReflectionClass</code> object.
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* @return array A list with use statements in the form (Alias => FQN).
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*/
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public function parseClass(\ReflectionClass $class)
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{
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if (false === $filename = $class->getFilename()) {
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return array();
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}
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$content = $this->getFileContent($filename, $class->getStartLine());
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$namespace = str_replace('\\', '\\\\', $class->getNamespaceName());
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$content = preg_replace('/^.*?(\bnamespace\s+' . $namespace . '\s*[;{].*)$/s', '\\1', $content);
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$this->tokens = token_get_all('<?php ' . $content);
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$this->numTokens = count($this->tokens);
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$this->pointer = 0;
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$statements = $this->parseUseStatements($class->getNamespaceName());
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return $statements;
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}
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/**
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* Get the content of the file right up to the given line number.
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*
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* @param string $filename The name of the file to load.
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* @param int $lineNumber The number of lines to read from file.
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* @return string The content of the file.
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*/
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private function getFileContent($filename, $lineNumber)
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{
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$content = '';
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$lineCnt = 0;
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$file = new SplFileObject($filename);
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while(!$file->eof()) {
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if ($lineCnt++ == $lineNumber) {
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break;
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}
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$content .= $file->fgets();
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}
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return $content;
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}
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/**
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* Gets the next non whitespace and non comment token.
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*
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* @return array The token if exists, null otherwise.
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*/
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private function next()
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{
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for ($i = $this->pointer; $i < $this->numTokens; $i++) {
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$this->pointer++;
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if ($this->tokens[$i][0] === T_WHITESPACE ||
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$this->tokens[$i][0] === T_COMMENT ||
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$this->tokens[$i][0] === T_DOC_COMMENT) {
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continue;
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}
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return $this->tokens[$i];
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}
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return null;
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}
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/**
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* Get all use statements.
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*
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* @param string $namespaceName The namespace name of the reflected class.
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* @return array A list with all found use statements.
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*/
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private function parseUseStatements($namespaceName)
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{
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$statements = array();
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while (($token = $this->next())) {
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if ($token[0] === T_USE) {
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$statements = array_merge($statements, $this->parseUseStatement());
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continue;
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} else if ($token[0] !== T_NAMESPACE || $this->parseNamespace() != $namespaceName) {
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continue;
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}
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// Get fresh array for new namespace. This is to prevent the parser to collect the use statements
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// for a previous namespace with the same name. This is the case if a namespace is defined twice
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// or if a namespace with the same name is commented out.
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$statements = array();
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}
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return $statements;
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}
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/**
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* Get the namespace name.
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*
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* @return string The found namespace name.
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*/
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private function parseNamespace()
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{
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$namespace = '';
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while (($token = $this->next())){
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if ($token[0] === T_STRING || $token[0] === T_NS_SEPARATOR) {
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$namespace .= $token[1];
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} else {
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break;
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}
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}
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return $namespace;
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}
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/**
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* Parse a single use statement.
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*
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* @return array A list with all found class names for a use statement.
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*/
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private function parseUseStatement()
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{
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$class = '';
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$alias = '';
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$statements = array();
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$explicitAlias = false;
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while (($token = $this->next())) {
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$isNameToken = $token[0] === T_STRING || $token[0] === T_NS_SEPARATOR;
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if (!$explicitAlias && $isNameToken) {
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$class .= $token[1];
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$alias = $token[1];
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} else if ($explicitAlias && $isNameToken) {
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$alias .= $token[1];
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} else if ($token[0] === T_AS) {
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$explicitAlias = true;
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$alias = '';
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} else if ($token === ',') {
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$statements[strtolower($alias)] = $class;
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$class = '';
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$alias = '';
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$explicitAlias = false;
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} else if ($token === ';') {
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$statements[strtolower($alias)] = $class;
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break;
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} else {
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break;
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}
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}
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return $statements;
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}
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} |