Viewing file:  PhpParser.php (2.42 KB) -rw-r--r--
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<?php
namespace Doctrine\Common\Annotations;
use ReflectionClass;
use ReflectionFunction;
use SplFileObject;
use function is_file;
use function method_exists;
use function preg_quote;
use function preg_replace;
/**
* Parses a file for namespaces/use/class declarations.
*/
final class PhpParser
{
/**
* Parses a class.
*
* @deprecated use parseUseStatements instead
*
* @param ReflectionClass $class A <code>ReflectionClass</code> object.
*
* @return array<string, class-string> A list with use statements in the form (Alias => FQN).
*/
public function parseClass(ReflectionClass $class)
{
return $this->parseUseStatements($class);
}
/**
* Parse a class or function for use statements.
*
* @param ReflectionClass|ReflectionFunction $reflection
*
* @psalm-return array<string, string> a list with use statements in the form (Alias => FQN).
*/
public function parseUseStatements($reflection): array
{
if (method_exists($reflection, 'getUseStatements')) {
return $reflection->getUseStatements();
}
$filename = $reflection->getFileName();
if ($filename === false) {
return [];
}
$content = $this->getFileContent($filename, $reflection->getStartLine());
if ($content === null) {
return [];
}
$namespace = preg_quote($reflection->getNamespaceName());
$content = preg_replace('/^.*?(\bnamespace\s+' . $namespace . '\s*[;{].*)$/s', '\\1', $content);
$tokenizer = new TokenParser('<?php ' . $content);
return $tokenizer->parseUseStatements($reflection->getNamespaceName());
}
/**
* Gets the content of the file right up to the given line number.
*
* @param string $filename The name of the file to load.
* @param int $lineNumber The number of lines to read from file.
*
* @return string|null The content of the file or null if the file does not exist.
*/
private function getFileContent($filename, $lineNumber)
{
if (! is_file($filename)) {
return null;
}
$content = '';
$lineCnt = 0;
$file = new SplFileObject($filename);
while (! $file->eof()) {
if ($lineCnt++ === $lineNumber) {
break;
}
$content .= $file->fgets();
}
return $content;
}
}
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