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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Setup\Module\Di\Code\Reader;
use Laminas\Code\Exception\InvalidArgumentException;
use Laminas\Code\Exception\RuntimeException;
/**
* FileScanner code reader
*
* @SuppressWarnings(PHPMD)
*/
class FileScanner
{
/**
* @var string
*/
protected $file;
/**
* @var bool
*/
protected $isScanned = false;
/**
* @var array
*/
protected $tokens = [];
/**
* @var array
*/
protected $infos = [];
/**
* @var int
*/
private $tokenType;
/**
* copied from laminas-code 3.5.1
*
* @param string $file
*
* @throws InvalidArgumentException
*/
public function __construct(string $file)
{
$this->file = $file;
// phpcs:ignore Magento2.Functions.DiscouragedFunction
if (!file_exists($file)) {
throw new InvalidArgumentException(sprintf(
'File "%s" not found',
$file
));
}
// phpcs:ignore Magento2.Functions.DiscouragedFunction
$tokens = token_get_all(file_get_contents($file));
$this->tokens = $tokens;
}
/**
* @inheritDoc
*/
protected function scan()
{
if ($this->isScanned) {
return;
}
if (!$this->tokens) {
throw new RuntimeException('No tokens were provided');
}
/**
* Define PHP 5.4 'trait' token constant.
*/
if (!defined('T_TRAIT')) {
define('T_TRAIT', 42001);
}
$namespaceContentTokenTypes = [
T_NS_SEPARATOR => T_NS_SEPARATOR,
T_STRING => T_STRING,
T_NAME_QUALIFIED => T_NAME_QUALIFIED,
T_NAME_FULLY_QUALIFIED => T_NAME_FULLY_QUALIFIED
];
/**
* Variables & Setup
*/
$tokens = &$this->tokens; // localize
$infos = &$this->infos; // localize
$tokenIndex = null;
$token = null;
$this->tokenType = null;
$tokenContent = null;
$tokenLine = null;
$namespace = null;
$docCommentIndex = false;
$infoIndex = 0;
/*
* MACRO creation
*/
$macroTokenAdvance = function () use (&$tokens, &$tokenIndex, &$token, &$tokenContent, &$tokenLine) {
$tokenIndex = ($tokenIndex === null) ? 0 : $tokenIndex + 1;
if (!isset($tokens[$tokenIndex])) {
$token = false;
$tokenContent = false;
$this->tokenType = false;
$tokenLine = false;
return false;
}
if (is_string($tokens[$tokenIndex]) && $tokens[$tokenIndex] === '"') {
do {
$tokenIndex++;
} while (!(is_string($tokens[$tokenIndex]) && $tokens[$tokenIndex] === '"'));
}
$token = $tokens[$tokenIndex];
if (is_array($token)) {
list($this->tokenType, $tokenContent, $tokenLine) = $token;
} else {
$this->tokenType = null;
$tokenContent = $token;
}
return $tokenIndex;
};
$macroTokenLogicalStartIndex = function () use (&$tokenIndex, &$docCommentIndex) {
return ($docCommentIndex === false) ? $tokenIndex : $docCommentIndex;
};
$macroDocCommentStart = function () use (&$tokenIndex, &$docCommentIndex) {
$docCommentIndex = $tokenIndex;
return $docCommentIndex;
};
$macroDocCommentValidate = function () use (&$docCommentIndex) {
static $validTrailingTokens = null;
if ($validTrailingTokens === null) {
$validTrailingTokens = [T_WHITESPACE, T_FINAL, T_ABSTRACT, T_INTERFACE, T_CLASS, T_FUNCTION];
}
if ($docCommentIndex !== false && !in_array($this->tokenType, $validTrailingTokens)) {
$docCommentIndex = false;
}
return $docCommentIndex;
};
$macroInfoAdvance = function () use (&$infoIndex, &$infos, &$tokenIndex, &$tokenLine) {
$infos[$infoIndex]['tokenEnd'] = $tokenIndex;
$infos[$infoIndex]['lineEnd'] = $tokenLine;
$infoIndex++;
return $infoIndex;
};
// phpcs:disable
/**
* START FINITE STATE MACHINE FOR SCANNING TOKENS
*/
// Initialize token
$macroTokenAdvance();
SCANNER_TOP:
if ($token === false) {
goto SCANNER_END;
}
// Validate current doc comment index
$macroDocCommentValidate();
switch ($this->tokenType) {
case T_DOC_COMMENT:
$macroDocCommentStart();
goto SCANNER_CONTINUE;
//goto no break needed
case T_NAMESPACE:
$infos[$infoIndex] = [
'type' => 'namespace',
'tokenStart' => $macroTokenLogicalStartIndex(),
'tokenEnd' => null,
'lineStart' => $token[2],
'lineEnd' => null,
'namespace' => null,
];
// start processing with next token
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
SCANNER_NAMESPACE_TOP:
if ($this->tokenType === null && $tokenContent === ';' || $tokenContent === '{') {
goto SCANNER_NAMESPACE_END;
}
if ($this->tokenType === T_WHITESPACE) {
goto SCANNER_NAMESPACE_CONTINUE;
}
if (isset($namespaceContentTokenTypes[$this->tokenType])) {
$infos[$infoIndex]['namespace'] .= $tokenContent;
}
SCANNER_NAMESPACE_CONTINUE:
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
goto SCANNER_NAMESPACE_TOP;
SCANNER_NAMESPACE_END:
$namespace = $infos[$infoIndex]['namespace'];
$macroInfoAdvance();
goto SCANNER_CONTINUE;
//goto no break needed
case T_USE:
$infos[$infoIndex] = [
'type' => 'use',
'tokenStart' => $macroTokenLogicalStartIndex(),
'tokenEnd' => null,
'lineStart' => $tokens[$tokenIndex][2],
'lineEnd' => null,
'namespace' => $namespace,
'statements' => [0 => ['use' => null, 'as' => null]],
];
$useStatementIndex = 0;
$useAsContext = false;
// start processing with next token
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
SCANNER_USE_TOP:
if ($this->tokenType === null) {
if ($tokenContent === ';') {
goto SCANNER_USE_END;
} elseif ($tokenContent === ',') {
$useAsContext = false;
$useStatementIndex++;
$infos[$infoIndex]['statements'][$useStatementIndex] = ['use' => null, 'as' => null];
}
}
// ANALYZE
if ($this->tokenType !== null) {
if ($this->tokenType == T_AS) {
$useAsContext = true;
goto SCANNER_USE_CONTINUE;
}
if (\array_key_exists($this->tokenType, $namespaceContentTokenTypes)) {
if ($useAsContext == false) {
$infos[$infoIndex]['statements'][$useStatementIndex]['use'] .= $tokenContent;
} else {
$infos[$infoIndex]['statements'][$useStatementIndex]['as'] = $tokenContent;
}
}
}
SCANNER_USE_CONTINUE:
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
goto SCANNER_USE_TOP;
SCANNER_USE_END:
$macroInfoAdvance();
goto SCANNER_CONTINUE;
//goto no break needed
case T_INCLUDE:
case T_INCLUDE_ONCE:
case T_REQUIRE:
case T_REQUIRE_ONCE:
// Static for performance
static $includeTypes = [
T_INCLUDE => 'include',
T_INCLUDE_ONCE => 'include_once',
T_REQUIRE => 'require',
T_REQUIRE_ONCE => 'require_once'
];
$infos[$infoIndex] = [
'type' => 'include',
'tokenStart' => $macroTokenLogicalStartIndex(),
'tokenEnd' => null,
'lineStart' => $tokens[$tokenIndex][2],
'lineEnd' => null,
'includeType' => $includeTypes[$tokens[$tokenIndex][0]],
'path' => '',
];
// start processing with next token
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
SCANNER_INCLUDE_TOP:
if ($this->tokenType === null && $tokenContent === ';') {
goto SCANNER_INCLUDE_END;
}
$infos[$infoIndex]['path'] .= $tokenContent;
SCANNER_INCLUDE_CONTINUE:
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
goto SCANNER_INCLUDE_TOP;
SCANNER_INCLUDE_END:
$macroInfoAdvance();
goto SCANNER_CONTINUE;
//goto no break needed
case T_FUNCTION:
case T_FINAL:
case T_ABSTRACT:
case T_CLASS:
case T_INTERFACE:
case T_TRAIT:
$infos[$infoIndex] = [
'type' => ($this->tokenType === T_FUNCTION) ? 'function' : 'class',
'tokenStart' => $macroTokenLogicalStartIndex(),
'tokenEnd' => null,
'lineStart' => $tokens[$tokenIndex][2],
'lineEnd' => null,
'namespace' => $namespace,
'uses' => $this->getUsesNoScan($namespace),
'name' => null,
'shortName' => null,
];
$classBraceCount = 0;
// start processing with current token
SCANNER_CLASS_TOP:
// process the name
if ($infos[$infoIndex]['shortName'] == ''
&& (($this->tokenType === T_CLASS
|| $this->tokenType === T_INTERFACE
|| $this->tokenType === T_TRAIT
)
&& $infos[$infoIndex]['type'] === 'class' && $tokens[$tokenIndex - 1][0] !== T_DOUBLE_COLON
|| ($this->tokenType === T_FUNCTION && $infos[$infoIndex]['type'] === 'function'))
) {
$infos[$infoIndex]['shortName'] = $tokens[$tokenIndex + 2][1];
$infos[$infoIndex]['name'] = (($namespace !== null)
? $namespace . '\\'
: '') . $infos[$infoIndex]['shortName'];
}
if ($this->tokenType === null) {
if ($tokenContent === '{') {
$classBraceCount++;
}
if ($tokenContent === '}') {
$classBraceCount--;
if ($classBraceCount === 0) {
goto SCANNER_CLASS_END;
}
}
}
SCANNER_CLASS_CONTINUE:
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
goto SCANNER_CLASS_TOP;
SCANNER_CLASS_END:
$macroInfoAdvance();
goto SCANNER_CONTINUE;
}
SCANNER_CONTINUE:
if ($macroTokenAdvance() === false) {
goto SCANNER_END;
}
goto SCANNER_TOP;
SCANNER_END:
/**
* END FINITE STATE MACHINE FOR SCANNING TOKENS
*/
$this->isScanned = true;
// phpcs:enable
}
/**
* Copied from laminas-code 3.5.1
*
* @param string|null $namespace
*
* @return array|null
*/
public function getUses(string $namespace = null): ?array
{
$this->scan();
return $this->getUsesNoScan($namespace);
}
/**
* Copied from laminas-code 3.5.1
*
* @param string|null $namespace
*
* @return array|null
*/
protected function getUsesNoScan(string $namespace = null): ?array
{
$namespaces = [];
foreach ($this->infos as $info) {
if ($info['type'] === 'namespace') {
$namespaces[] = $info['namespace'];
}
}
if ($namespace === null) {
$namespace = array_shift($namespaces);
} elseif (!in_array($namespace, $namespaces, true)) {
return null;
}
$uses = [];
foreach ($this->infos as $info) {
if ($info['type'] !== 'use') {
continue;
}
foreach ($info['statements'] as $statement) {
if ($info['namespace'] === $namespace) {
$uses[] = $statement;
}
}
}
return $uses;
}
}