diff options
author | Andrew Dolgov <[email protected]> | 2022-03-22 12:24:31 +0300 |
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committer | Andrew Dolgov <[email protected]> | 2022-03-22 12:24:31 +0300 |
commit | 1c4f7ab3b838b23afb2ee4dab14acbf75956e952 (patch) | |
tree | 0a19274107d717efe92d2c0376cd3105fead5a11 /vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php | |
parent | 711662948768492e8d05b778a7d80eacaec368d2 (diff) |
* add phpunit as a dev dependency
* add some basic tests for UrlHelper::rewrite_relative()
* fix UrlHelper::rewrite_relative() to work better on non-absolute
relative URL paths
Diffstat (limited to 'vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php')
-rw-r--r-- | vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php b/vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php new file mode 100644 index 000000000..1a29c676e --- /dev/null +++ b/vendor/nikic/php-parser/lib/PhpParser/Lexer/TokenEmulator/NullsafeTokenEmulator.php @@ -0,0 +1,67 @@ +<?php declare(strict_types=1); + +namespace PhpParser\Lexer\TokenEmulator; + +use PhpParser\Lexer\Emulative; + +final class NullsafeTokenEmulator extends TokenEmulator +{ + public function getPhpVersion(): string + { + return Emulative::PHP_8_0; + } + + public function isEmulationNeeded(string $code): bool + { + return strpos($code, '?->') !== false; + } + + public function emulate(string $code, array $tokens): array + { + // We need to manually iterate and manage a count because we'll change + // the tokens array on the way + $line = 1; + for ($i = 0, $c = count($tokens); $i < $c; ++$i) { + if ($tokens[$i] === '?' && isset($tokens[$i + 1]) && $tokens[$i + 1][0] === \T_OBJECT_OPERATOR) { + array_splice($tokens, $i, 2, [ + [\T_NULLSAFE_OBJECT_OPERATOR, '?->', $line] + ]); + $c--; + continue; + } + + // Handle ?-> inside encapsed string. + if ($tokens[$i][0] === \T_ENCAPSED_AND_WHITESPACE && isset($tokens[$i - 1]) + && $tokens[$i - 1][0] === \T_VARIABLE + && preg_match('/^\?->([a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*)/', $tokens[$i][1], $matches) + ) { + $replacement = [ + [\T_NULLSAFE_OBJECT_OPERATOR, '?->', $line], + [\T_STRING, $matches[1], $line], + ]; + if (\strlen($matches[0]) !== \strlen($tokens[$i][1])) { + $replacement[] = [ + \T_ENCAPSED_AND_WHITESPACE, + \substr($tokens[$i][1], \strlen($matches[0])), + $line + ]; + } + array_splice($tokens, $i, 1, $replacement); + $c += \count($replacement) - 1; + continue; + } + + if (\is_array($tokens[$i])) { + $line += substr_count($tokens[$i][1], "\n"); + } + } + + return $tokens; + } + + public function reverseEmulate(string $code, array $tokens): array + { + // ?-> was not valid code previously, don't bother. + return $tokens; + } +} |