533 lines
15 KiB
PHP
533 lines
15 KiB
PHP
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<?php declare(strict_types = 1);
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namespace SlevomatCodingStandard\Helpers;
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use PHP_CodeSniffer\Files\File;
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use PHP_CodeSniffer\Util\Tokens;
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use function array_merge;
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use function array_reverse;
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use function array_values;
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use function count;
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use function in_array;
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use function is_array;
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use function token_get_all;
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use const T_ANON_CLASS;
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use const T_ARRAY;
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use const T_AS;
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use const T_ATTRIBUTE;
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use const T_BITWISE_AND;
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use const T_BITWISE_OR;
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use const T_CATCH;
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use const T_CLASS;
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use const T_CLOSE_PARENTHESIS;
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use const T_COLON;
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use const T_COMMA;
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use const T_CONST;
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use const T_DECLARE;
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use const T_DOUBLE_COLON;
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use const T_DOUBLE_QUOTED_STRING;
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use const T_ELLIPSIS;
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use const T_ENUM;
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use const T_ENUM_CASE;
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use const T_EXTENDS;
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use const T_FUNCTION;
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use const T_GOTO;
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use const T_HEREDOC;
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use const T_IMPLEMENTS;
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use const T_INSTANCEOF;
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use const T_NAME_FULLY_QUALIFIED;
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use const T_NAME_QUALIFIED;
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use const T_NAME_RELATIVE;
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use const T_NAMESPACE;
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use const T_NEW;
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use const T_NS_SEPARATOR;
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use const T_NULLABLE;
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use const T_NULLSAFE_OBJECT_OPERATOR;
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use const T_OBJECT_OPERATOR;
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use const T_OPEN_PARENTHESIS;
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use const T_OPEN_SHORT_ARRAY;
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use const T_OPEN_TAG;
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use const T_PARAM_NAME;
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use const T_STRING;
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use const T_TRAIT;
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use const T_TYPE_INTERSECTION;
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use const T_TYPE_UNION;
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use const T_USE;
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use const T_VARIABLE;
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use const T_WHITESPACE;
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/**
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* @internal
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*/
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class ReferencedNameHelper
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{
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/**
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* @return list<ReferencedName>
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*/
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public static function getAllReferencedNames(File $phpcsFile, int $openTagPointer): array
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{
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$lazyValue = static function () use ($phpcsFile, $openTagPointer): array {
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return self::createAllReferencedNames($phpcsFile, $openTagPointer);
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};
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return SniffLocalCache::getAndSetIfNotCached($phpcsFile, 'references', $lazyValue);
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}
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/**
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* @return list<ReferencedName>
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*/
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public static function getAllReferencedNamesInAttributes(File $phpcsFile, int $openTagPointer): array
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{
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$lazyValue = static function () use ($phpcsFile, $openTagPointer): array {
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return self::createAllReferencedNamesInAttributes($phpcsFile, $openTagPointer);
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};
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return SniffLocalCache::getAndSetIfNotCached($phpcsFile, 'referencesFromAttributes', $lazyValue);
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}
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public static function getReferenceName(File $phpcsFile, int $nameStartPointer, int $nameEndPointer): string
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{
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$tokens = $phpcsFile->getTokens();
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$referencedName = '';
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for ($i = $nameStartPointer; $i <= $nameEndPointer; $i++) {
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if (in_array($tokens[$i]['code'], Tokens::$emptyTokens, true)) {
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continue;
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}
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$referencedName .= $tokens[$i]['content'];
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}
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return $referencedName;
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}
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public static function getReferencedNameEndPointer(File $phpcsFile, int $startPointer): int
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{
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$tokens = $phpcsFile->getTokens();
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$nameTokenCodes = TokenHelper::getNameTokenCodes();
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$nameTokenCodesWithWhitespace = array_merge($nameTokenCodes, Tokens::$emptyTokens);
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$lastNamePointer = $startPointer;
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for ($i = $startPointer + 1; $i < count($tokens); $i++) {
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if (!in_array($tokens[$i]['code'], $nameTokenCodesWithWhitespace, true)) {
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break;
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}
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if (!in_array($tokens[$i]['code'], $nameTokenCodes, true)) {
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continue;
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}
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$lastNamePointer = $i;
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}
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return $lastNamePointer;
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}
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/**
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* @return list<ReferencedName>
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*/
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private static function createAllReferencedNames(File $phpcsFile, int $openTagPointer): array
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{
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$referencedNames = [];
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$beginSearchAtPointer = $openTagPointer + 1;
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$nameTokenCodes = TokenHelper::getNameTokenCodes();
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$nameTokenCodes[] = T_DOUBLE_QUOTED_STRING;
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$nameTokenCodes[] = T_HEREDOC;
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$tokens = $phpcsFile->getTokens();
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while (true) {
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$nameStartPointer = TokenHelper::findNext($phpcsFile, $nameTokenCodes, $beginSearchAtPointer);
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if ($nameStartPointer === null) {
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break;
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}
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// Find referenced names inside double quotes string
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if (self::isNeedParsedContent($tokens[$nameStartPointer]['code'])) {
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$content = $tokens[$nameStartPointer]['content'];
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$currentPointer = $nameStartPointer + 1;
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while (self::isNeedParsedContent($tokens[$currentPointer]['code'])) {
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$content .= $tokens[$currentPointer]['content'];
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$currentPointer++;
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}
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$names = self::getReferencedNamesFromString($content);
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foreach ($names as $name) {
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$referencedNames[] = new ReferencedName($name, $nameStartPointer, $nameStartPointer, ReferencedName::TYPE_CLASS);
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}
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$beginSearchAtPointer = $currentPointer;
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continue;
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}
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// Attributes are parsed in specific method
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$attributeStartPointerBefore = TokenHelper::findPrevious($phpcsFile, T_ATTRIBUTE, $nameStartPointer - 1, $beginSearchAtPointer);
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if ($attributeStartPointerBefore !== null) {
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if ($tokens[$attributeStartPointerBefore]['attribute_closer'] > $nameStartPointer) {
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$beginSearchAtPointer = $tokens[$attributeStartPointerBefore]['attribute_closer'] + 1;
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continue;
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}
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}
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if (!self::isReferencedName($phpcsFile, $nameStartPointer)) {
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/** @var int $beginSearchAtPointer */
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$beginSearchAtPointer = TokenHelper::findNextExcluding(
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$phpcsFile,
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array_merge(TokenHelper::$ineffectiveTokenCodes, $nameTokenCodes),
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$nameStartPointer + 1
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);
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continue;
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}
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$nameEndPointer = self::getReferencedNameEndPointer($phpcsFile, $nameStartPointer);
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$referencedNames[] = new ReferencedName(
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self::getReferenceName($phpcsFile, $nameStartPointer, $nameEndPointer),
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$nameStartPointer,
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$nameEndPointer,
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self::getReferenceType($phpcsFile, $nameStartPointer, $nameEndPointer)
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);
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$beginSearchAtPointer = $nameEndPointer + 1;
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}
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return $referencedNames;
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}
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private static function getReferenceType(File $phpcsFile, int $nameStartPointer, int $nameEndPointer): string
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{
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$tokens = $phpcsFile->getTokens();
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$nextTokenAfterEndPointer = TokenHelper::findNextEffective($phpcsFile, $nameEndPointer + 1);
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$previousTokenBeforeStartPointer = TokenHelper::findPreviousEffective($phpcsFile, $nameStartPointer - 1);
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$nameTokenCodes = TokenHelper::getNameTokenCodes();
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if ($tokens[$nextTokenAfterEndPointer]['code'] === T_OPEN_PARENTHESIS) {
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return $tokens[$previousTokenBeforeStartPointer]['code'] === T_NEW
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? ReferencedName::TYPE_CLASS
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: ReferencedName::TYPE_FUNCTION;
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}
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if (
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$tokens[$previousTokenBeforeStartPointer]['code'] === T_TYPE_UNION
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|| $tokens[$nextTokenAfterEndPointer]['code'] === T_TYPE_UNION
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) {
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return ReferencedName::TYPE_CLASS;
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}
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if (
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$tokens[$previousTokenBeforeStartPointer]['code'] === T_TYPE_INTERSECTION
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|| $tokens[$nextTokenAfterEndPointer]['code'] === T_TYPE_INTERSECTION
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) {
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return ReferencedName::TYPE_CLASS;
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}
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if ($tokens[$nextTokenAfterEndPointer]['code'] === T_BITWISE_AND) {
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$tokenAfterNextToken = TokenHelper::findNextEffective($phpcsFile, $nextTokenAfterEndPointer + 1);
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return in_array($tokens[$tokenAfterNextToken]['code'], [T_VARIABLE, T_ELLIPSIS], true)
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? ReferencedName::TYPE_CLASS
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: ReferencedName::TYPE_CONSTANT;
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}
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if (
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in_array($tokens[$nextTokenAfterEndPointer]['code'], [
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T_VARIABLE,
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// Variadic parameter
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T_ELLIPSIS,
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], true)
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) {
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return ReferencedName::TYPE_CLASS;
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}
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if ($tokens[$previousTokenBeforeStartPointer]['code'] === T_COLON) {
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$previousTokenPointer = TokenHelper::findPreviousEffective($phpcsFile, $previousTokenBeforeStartPointer - 1);
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if (
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$tokens[$previousTokenPointer]['code'] === T_PARAM_NAME
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&& $tokens[$nextTokenAfterEndPointer]['code'] !== T_DOUBLE_COLON
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) {
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return ReferencedName::TYPE_CONSTANT;
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}
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// Return type hint
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return ReferencedName::TYPE_CLASS;
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}
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if (
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in_array($tokens[$previousTokenBeforeStartPointer]['code'], [
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T_EXTENDS,
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T_IMPLEMENTS,
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T_INSTANCEOF,
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// Trait
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T_USE,
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T_NEW,
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// Nullable type hint
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T_NULLABLE,
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], true)
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|| $tokens[$nextTokenAfterEndPointer]['code'] === T_DOUBLE_COLON
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) {
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return ReferencedName::TYPE_CLASS;
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}
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if ($tokens[$previousTokenBeforeStartPointer]['code'] === T_COMMA) {
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$previousTokenPointer = TokenHelper::findPreviousExcluding(
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$phpcsFile,
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array_merge([T_COMMA], $nameTokenCodes, TokenHelper::$ineffectiveTokenCodes),
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$previousTokenBeforeStartPointer - 1
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);
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return in_array($tokens[$previousTokenPointer]['code'], [
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T_IMPLEMENTS,
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T_EXTENDS,
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T_USE,
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], true)
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? ReferencedName::TYPE_CLASS
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: ReferencedName::TYPE_CONSTANT;
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}
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if (in_array($tokens[$previousTokenBeforeStartPointer]['code'], [T_BITWISE_OR, T_OPEN_PARENTHESIS], true)) {
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$catchPointer = TokenHelper::findPreviousExcluding(
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$phpcsFile,
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array_merge([T_BITWISE_OR, T_OPEN_PARENTHESIS], $nameTokenCodes, TokenHelper::$ineffectiveTokenCodes),
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$previousTokenBeforeStartPointer - 1
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);
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if ($tokens[$catchPointer]['code'] === T_CATCH) {
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return ReferencedName::TYPE_CLASS;
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}
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}
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return ReferencedName::TYPE_CONSTANT;
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}
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private static function isReferencedName(File $phpcsFile, int $startPointer): bool
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{
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$tokens = $phpcsFile->getTokens();
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$nextPointer = TokenHelper::findNextEffective($phpcsFile, $startPointer + 1);
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$previousPointer = TokenHelper::findPreviousEffective($phpcsFile, $startPointer - 1);
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if ($nextPointer !== null && $tokens[$nextPointer]['code'] === T_DOUBLE_COLON) {
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return !in_array($tokens[$previousPointer]['code'], [T_OBJECT_OPERATOR, T_NULLSAFE_OBJECT_OPERATOR], true);
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}
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if (
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count($tokens[$startPointer]['conditions']) > 0
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&& array_values(array_reverse($tokens[$startPointer]['conditions']))[0] === T_USE
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) {
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// Method imported from trait
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return false;
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}
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$previousToken = $tokens[$previousPointer];
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$skipTokenCodes = [
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T_FUNCTION,
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T_AS,
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T_DOUBLE_COLON,
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T_OBJECT_OPERATOR,
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T_NULLSAFE_OBJECT_OPERATOR,
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T_NAMESPACE,
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T_CONST,
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T_ENUM_CASE,
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];
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if ($previousToken['code'] === T_USE) {
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$classPointer = TokenHelper::findPrevious($phpcsFile, [T_CLASS, T_TRAIT, T_ANON_CLASS, T_ENUM], $startPointer - 1);
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if ($classPointer !== null) {
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$classToken = $tokens[$classPointer];
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return $startPointer > $classToken['scope_opener'] && $startPointer < $classToken['scope_closer'];
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}
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return false;
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}
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if (
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$previousToken['code'] === T_OPEN_PARENTHESIS
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&& isset($previousToken['parenthesis_owner'])
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&& $tokens[$previousToken['parenthesis_owner']]['code'] === T_DECLARE
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) {
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return false;
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}
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if (
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$previousToken['code'] === T_COMMA
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&& TokenHelper::findPreviousLocal($phpcsFile, T_DECLARE, $previousPointer - 1) !== null
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) {
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return false;
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}
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if ($previousToken['code'] === T_COMMA) {
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$constPointer = TokenHelper::findPreviousLocal($phpcsFile, T_CONST, $previousPointer - 1);
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if (
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$constPointer !== null
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&& TokenHelper::findNext($phpcsFile, [T_OPEN_SHORT_ARRAY, T_ARRAY], $constPointer + 1, $startPointer) === null
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) {
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return false;
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}
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} elseif ($previousToken['code'] === T_BITWISE_AND) {
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$pointerBefore = TokenHelper::findPreviousEffective($phpcsFile, $previousPointer - 1);
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$isFunctionPointerBefore = TokenHelper::findPreviousLocal($phpcsFile, T_FUNCTION, $previousPointer - 1) !== null;
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||
|
|
if ($tokens[$pointerBefore]['code'] !== T_VARIABLE && $isFunctionPointerBefore) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
} elseif ($previousToken['code'] === T_GOTO) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$isProbablyReferencedName = !in_array(
|
||
|
|
$previousToken['code'],
|
||
|
|
array_merge($skipTokenCodes, TokenHelper::$typeKeywordTokenCodes),
|
||
|
|
true
|
||
|
|
);
|
||
|
|
|
||
|
|
if (!$isProbablyReferencedName) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
$endPointer = self::getReferencedNameEndPointer($phpcsFile, $startPointer);
|
||
|
|
$referencedName = self::getReferenceName($phpcsFile, $startPointer, $endPointer);
|
||
|
|
|
||
|
|
if (TypeHintHelper::isSimpleTypeHint($referencedName) || $referencedName === 'object') {
|
||
|
|
return $tokens[$nextPointer]['code'] === T_OPEN_PARENTHESIS;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return list<ReferencedName>
|
||
|
|
*/
|
||
|
|
private static function createAllReferencedNamesInAttributes(File $phpcsFile, int $openTagPointer): array
|
||
|
|
{
|
||
|
|
$referencedNames = [];
|
||
|
|
|
||
|
|
$tokens = $phpcsFile->getTokens();
|
||
|
|
|
||
|
|
$attributePointers = TokenHelper::findNextAll($phpcsFile, T_ATTRIBUTE, $openTagPointer + 1);
|
||
|
|
|
||
|
|
foreach ($attributePointers as $attributeStartPointer) {
|
||
|
|
$searchStartPointer = $attributeStartPointer + 1;
|
||
|
|
$searchEndPointer = $tokens[$attributeStartPointer]['attribute_closer'];
|
||
|
|
|
||
|
|
$searchPointer = $searchStartPointer;
|
||
|
|
$searchTokens = array_merge(TokenHelper::getNameTokenCodes(), [T_OPEN_PARENTHESIS, T_CLOSE_PARENTHESIS]);
|
||
|
|
$level = 0;
|
||
|
|
do {
|
||
|
|
$pointer = TokenHelper::findNext($phpcsFile, $searchTokens, $searchPointer, $searchEndPointer);
|
||
|
|
|
||
|
|
if ($pointer === null) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($tokens[$pointer]['code'] === T_OPEN_PARENTHESIS) {
|
||
|
|
$level++;
|
||
|
|
$searchPointer = $pointer + 1;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($tokens[$pointer]['code'] === T_CLOSE_PARENTHESIS) {
|
||
|
|
$level--;
|
||
|
|
$searchPointer = $pointer + 1;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$referencedNameEndPointer = self::getReferencedNameEndPointer($phpcsFile, $pointer);
|
||
|
|
|
||
|
|
$pointerBefore = TokenHelper::findPreviousEffective($phpcsFile, $pointer - 1);
|
||
|
|
|
||
|
|
if (in_array($tokens[$pointerBefore]['code'], [T_OPEN_TAG, T_ATTRIBUTE], true)) {
|
||
|
|
$referenceType = ReferencedName::TYPE_CLASS;
|
||
|
|
} elseif ($tokens[$pointerBefore]['code'] === T_COMMA && $level === 0) {
|
||
|
|
$referenceType = ReferencedName::TYPE_CLASS;
|
||
|
|
} elseif (self::isReferencedName($phpcsFile, $pointer)) {
|
||
|
|
$referenceType = self::getReferenceType($phpcsFile, $pointer, $referencedNameEndPointer);
|
||
|
|
} else {
|
||
|
|
$searchPointer = $pointer + 1;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$referencedName = self::getReferenceName($phpcsFile, $pointer, $referencedNameEndPointer);
|
||
|
|
|
||
|
|
$referencedNames[] = new ReferencedName(
|
||
|
|
$referencedName,
|
||
|
|
$attributeStartPointer,
|
||
|
|
$tokens[$attributeStartPointer]['attribute_closer'],
|
||
|
|
$referenceType
|
||
|
|
);
|
||
|
|
|
||
|
|
$searchPointer = $referencedNameEndPointer + 1;
|
||
|
|
|
||
|
|
} while (true);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $referencedNames;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param int|string $code
|
||
|
|
*/
|
||
|
|
private static function isNeedParsedContent($code): bool
|
||
|
|
{
|
||
|
|
return in_array($code, [T_DOUBLE_QUOTED_STRING, T_HEREDOC], true);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return list<string>
|
||
|
|
*/
|
||
|
|
private static function getReferencedNamesFromString(string $content): array
|
||
|
|
{
|
||
|
|
$referencedNames = [];
|
||
|
|
$subTokens = token_get_all('<?php ' . $content);
|
||
|
|
|
||
|
|
foreach ($subTokens as $position => $token) {
|
||
|
|
if (is_array($token) && $token[0] === T_DOUBLE_COLON) {
|
||
|
|
$referencedName = '';
|
||
|
|
$tmpPosition = $position - 1;
|
||
|
|
while (true) {
|
||
|
|
if (!is_array($subTokens[$tmpPosition]) || !in_array($subTokens[$tmpPosition][0], [T_NS_SEPARATOR, T_STRING], true)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
$referencedName = $subTokens[$tmpPosition][1] . $referencedName;
|
||
|
|
$tmpPosition--;
|
||
|
|
}
|
||
|
|
|
||
|
|
$referencedNames[] = $referencedName;
|
||
|
|
} elseif (is_array($token) && $token[0] === T_NEW) {
|
||
|
|
$referencedName = '';
|
||
|
|
$tmpPosition = $position + 1;
|
||
|
|
while (true) {
|
||
|
|
if (!is_array($subTokens[$tmpPosition])) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if ($subTokens[$tmpPosition][0] === T_WHITESPACE) {
|
||
|
|
$tmpPosition++;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (!in_array(
|
||
|
|
$subTokens[$tmpPosition][0],
|
||
|
|
[T_STRING, T_NS_SEPARATOR, T_NAME_QUALIFIED, T_NAME_FULLY_QUALIFIED, T_NAME_RELATIVE],
|
||
|
|
true
|
||
|
|
)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
$referencedName .= $subTokens[$tmpPosition][1];
|
||
|
|
$tmpPosition++;
|
||
|
|
}
|
||
|
|
if ($referencedName !== '') {
|
||
|
|
$referencedNames[] = $referencedName;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $referencedNames;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|