opt
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cpanel
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ea-wappspector
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vendor
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nikic
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php-parser
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lib
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PhpParser
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Lexer
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TokenEmulator
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KeywordEmulator.php
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<?php declare(strict_types=1); namespace PhpParser\Lexer\TokenEmulator; use PhpParser\Token; abstract class KeywordEmulator extends TokenEmulator { abstract public function getKeywordString(): string; abstract public function getKeywordToken(): int; public function isEmulationNeeded(string $code): bool { return strpos(strtolower($code), $this->getKeywordString()) !== false; } /** @param Token[] $tokens */ protected function isKeywordContext(array $tokens, int $pos): bool { $prevToken = $this->getPreviousNonSpaceToken($tokens, $pos); if ($prevToken === null) { return false; } return $prevToken->id !== \T_OBJECT_OPERATOR && $prevToken->id !== \T_NULLSAFE_OBJECT_OPERATOR; } public function emulate(string $code, array $tokens): array { $keywordString = $this->getKeywordString(); foreach ($tokens as $i => $token) { if ($token->id === T_STRING && strtolower($token->text) === $keywordString && $this->isKeywordContext($tokens, $i)) { $token->id = $this->getKeywordToken(); } } return $tokens; } /** @param Token[] $tokens */ private function getPreviousNonSpaceToken(array $tokens, int $start): ?Token { for ($i = $start - 1; $i >= 0; --$i) { if ($tokens[$i]->id === T_WHITESPACE) { continue; } return $tokens[$i]; } return null; } public function reverseEmulate(string $code, array $tokens): array { $keywordToken = $this->getKeywordToken(); foreach ($tokens as $token) { if ($token->id === $keywordToken) { $token->id = \T_STRING; } } return $tokens; } }
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