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<?php declare(strict_types=1); namespace WPMU_DEV\Defender\Vendor\PhpDocReader\PhpParser; /** * Parses a file for namespaces/use/class declarations. * * Class taken and adapted from doctrine/annotations to avoid pulling the whole package. * * @author Fabien Potencier <[email protected]> * @author Christian Kaps <[email protected]> */ class TokenParser { /** * The token list. * * @var list<mixed[]> */ private $tokens; /** * The number of tokens. * * @var int */ private $numTokens; /** * The current array pointer. * * @var int */ private $pointer = 0; /** * @param string $contents */ public function __construct($contents) { $this->tokens = token_get_all($contents); // The PHP parser sets internal compiler globals for certain things. Annoyingly, the last docblock comment it // saw gets stored in doc_comment. When it comes to compile the next thing to be include()d this stored // doc_comment becomes owned by the first thing the compiler sees in the file that it considers might have a // docblock. If the first thing in the file is a class without a doc block this would cause calls to // getDocBlock() on said class to return our long lost doc_comment. Argh. // To workaround, cause the parser to parse an empty docblock. Sure getDocBlock() will return this, but at least // it's harmless to us. token_get_all("<?php\n/**\n *\n */"); $this->numTokens = count($this->tokens); } /** * Gets all use statements. * * @param string $namespaceName The namespace name of the reflected class. * * @return array<string, string> A list with all found use statements. */ public function parseUseStatements($namespaceName) { $statements = []; while (($token = $this->next())) { if ($token[0] === T_USE) { $statements = array_merge($statements, $this->parseUseStatement()); continue; } if ($token[0] !== T_NAMESPACE || $this->parseNamespace() !== $namespaceName) { continue; } // Get fresh array for new namespace. This is to prevent the parser to collect the use statements // for a previous namespace with the same name. This is the case if a namespace is defined twice // or if a namespace with the same name is commented out. $statements = []; } return $statements; } /** * Gets the next non whitespace and non comment token. * * @param bool $docCommentIsComment If TRUE then a doc comment is considered a comment and skipped. * If FALSE then only whitespace and normal comments are skipped. * * @return mixed[]|string|null The token if exists, null otherwise. */ private function next($docCommentIsComment = true) { for ($i = $this->pointer; $i < $this->numTokens; $i++) { $this->pointer++; if ( $this->tokens[$i][0] === T_WHITESPACE || $this->tokens[$i][0] === T_COMMENT || ($docCommentIsComment && $this->tokens[$i][0] === T_DOC_COMMENT) ) { continue; } return $this->tokens[$i]; } return null; } /** * Parses a single use statement. * * @return array<string, string> A list with all found class names for a use statement. */ private function parseUseStatement() { $groupRoot = ''; $class = ''; $alias = ''; $statements = []; $explicitAlias = false; while (($token = $this->next())) { if (! $explicitAlias && $token[0] === T_STRING) { $class .= $token[1]; $alias = $token[1]; } elseif ($explicitAlias && $token[0] === T_STRING) { $alias = $token[1]; } elseif ( PHP_VERSION_ID >= 80000 && ($token[0] === T_NAME_QUALIFIED || $token[0] === T_NAME_FULLY_QUALIFIED) ) { $class .= $token[1]; $classSplit = explode('\\', $token[1]); $alias = $classSplit[count($classSplit) - 1]; } elseif ($token[0] === T_NS_SEPARATOR) { $class .= '\\'; $alias = ''; } elseif ($token[0] === T_AS) { $explicitAlias = true; $alias = ''; } elseif ($token === ',') { $statements[strtolower($alias)] = $groupRoot . $class; $class = ''; $alias = ''; $explicitAlias = false; } elseif ($token === ';') { $statements[strtolower($alias)] = $groupRoot . $class; break; } elseif ($token === '{') { $groupRoot = $class; $class = ''; } elseif ($token === '}') { continue; } else { break; } } return $statements; } /** * Gets the namespace. * * @return string The found namespace. */ private function parseNamespace() { $name = ''; while ( ($token = $this->next()) && ($token[0] === T_STRING || $token[0] === T_NS_SEPARATOR || ( PHP_VERSION_ID >= 80000 && ($token[0] === T_NAME_QUALIFIED || $token[0] === T_NAME_FULLY_QUALIFIED) )) ) { $name .= $token[1]; } return $name; } }