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