| 1: | <?php declare(strict_types=1); |
| 2: | |
| 3: | namespace PhpParser\Lexer\TokenEmulator; |
| 4: | |
| 5: | use PhpParser\PhpVersion; |
| 6: | use PhpParser\Token; |
| 7: | |
| 8: | class VoidCastEmulator extends TokenEmulator { |
| 9: | public function getPhpVersion(): PhpVersion { |
| 10: | return PhpVersion::fromComponents(8, 5); |
| 11: | } |
| 12: | |
| 13: | public function isEmulationNeeded(string $code): bool { |
| 14: | return (bool)\preg_match('/\([ \t]*void[ \t]*\)/i', $code); |
| 15: | } |
| 16: | |
| 17: | public function emulate(string $code, array $tokens): array { |
| 18: | for ($i = 0, $c = count($tokens); $i < $c; ++$i) { |
| 19: | $token = $tokens[$i]; |
| 20: | if ($token->text !== '(') { |
| 21: | continue; |
| 22: | } |
| 23: | |
| 24: | $numTokens = 1; |
| 25: | $text = '('; |
| 26: | $j = $i + 1; |
| 27: | if ($j < $c && $tokens[$j]->id === \T_WHITESPACE && preg_match('/[ \t]+/', $tokens[$j]->text)) { |
| 28: | $text .= $tokens[$j]->text; |
| 29: | $numTokens++; |
| 30: | $j++; |
| 31: | } |
| 32: | |
| 33: | if ($j >= $c || $tokens[$j]->id !== \T_STRING || \strtolower($tokens[$j]->text) !== 'void') { |
| 34: | continue; |
| 35: | } |
| 36: | |
| 37: | $text .= $tokens[$j]->text; |
| 38: | $numTokens++; |
| 39: | $k = $j + 1; |
| 40: | if ($k < $c && $tokens[$k]->id === \T_WHITESPACE && preg_match('/[ \t]+/', $tokens[$k]->text)) { |
| 41: | $text .= $tokens[$k]->text; |
| 42: | $numTokens++; |
| 43: | $k++; |
| 44: | } |
| 45: | |
| 46: | if ($k >= $c || $tokens[$k]->text !== ')') { |
| 47: | continue; |
| 48: | } |
| 49: | |
| 50: | $text .= ')'; |
| 51: | $numTokens++; |
| 52: | array_splice($tokens, $i, $numTokens, [ |
| 53: | new Token(\T_VOID_CAST, $text, $token->line, $token->pos), |
| 54: | ]); |
| 55: | $c -= $numTokens - 1; |
| 56: | } |
| 57: | return $tokens; |
| 58: | } |
| 59: | |
| 60: | public function reverseEmulate(string $code, array $tokens): array { |
| 61: | for ($i = 0, $c = count($tokens); $i < $c; ++$i) { |
| 62: | $token = $tokens[$i]; |
| 63: | if ($token->id !== \T_VOID_CAST) { |
| 64: | continue; |
| 65: | } |
| 66: | |
| 67: | if (!preg_match('/^\(([ \t]*)(void)([ \t]*)\)$/i', $token->text, $match)) { |
| 68: | throw new \LogicException('Unexpected T_VOID_CAST contents'); |
| 69: | } |
| 70: | |
| 71: | $newTokens = []; |
| 72: | $pos = $token->pos; |
| 73: | |
| 74: | $newTokens[] = new Token(\ord('('), '(', $token->line, $pos); |
| 75: | $pos++; |
| 76: | |
| 77: | if ($match[1] !== '') { |
| 78: | $newTokens[] = new Token(\T_WHITESPACE, $match[1], $token->line, $pos); |
| 79: | $pos += \strlen($match[1]); |
| 80: | } |
| 81: | |
| 82: | $newTokens[] = new Token(\T_STRING, $match[2], $token->line, $pos); |
| 83: | $pos += \strlen($match[2]); |
| 84: | |
| 85: | if ($match[3] !== '') { |
| 86: | $newTokens[] = new Token(\T_WHITESPACE, $match[3], $token->line, $pos); |
| 87: | $pos += \strlen($match[3]); |
| 88: | } |
| 89: | |
| 90: | $newTokens[] = new Token(\ord(')'), ')', $token->line, $pos); |
| 91: | |
| 92: | array_splice($tokens, $i, 1, $newTokens); |
| 93: | $i += \count($newTokens) - 1; |
| 94: | $c += \count($newTokens) - 1; |
| 95: | } |
| 96: | return $tokens; |
| 97: | } |
| 98: | } |
| 99: | |