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<?php declare(strict_types = 1); namespace PHPStan\PhpDocParser\Lexer; use function implode; use function preg_match_all; use const PREG_SET_ORDER; /** * Implementation based on Nette Tokenizer (New BSD License; https://github.com/nette/tokenizer) */ class Lexer { public const TOKEN_REFERENCE = 0; public const TOKEN_UNION = 1; public const TOKEN_INTERSECTION = 2; public const TOKEN_NULLABLE = 3; public const TOKEN_OPEN_PARENTHESES = 4; public const TOKEN_CLOSE_PARENTHESES = 5; public const TOKEN_OPEN_ANGLE_BRACKET = 6; public const TOKEN_CLOSE_ANGLE_BRACKET = 7; public const TOKEN_OPEN_SQUARE_BRACKET = 8; public const TOKEN_CLOSE_SQUARE_BRACKET = 9; public const TOKEN_COMMA = 10; public const TOKEN_VARIADIC = 11; public const TOKEN_DOUBLE_COLON = 12; public const TOKEN_DOUBLE_ARROW = 13; public const TOKEN_EQUAL = 14; public const TOKEN_OPEN_PHPDOC = 15; public const TOKEN_CLOSE_PHPDOC = 16; public const TOKEN_PHPDOC_TAG = 17; public const TOKEN_FLOAT = 18; public const TOKEN_INTEGER = 19; public const TOKEN_SINGLE_QUOTED_STRING = 20; public const TOKEN_DOUBLE_QUOTED_STRING = 21; public const TOKEN_IDENTIFIER = 22; public const TOKEN_THIS_VARIABLE = 23; public const TOKEN_VARIABLE = 24; public const TOKEN_HORIZONTAL_WS = 25; public const TOKEN_PHPDOC_EOL = 26; public const TOKEN_OTHER = 27; public const TOKEN_END = 28; public const TOKEN_COLON = 29; public const TOKEN_WILDCARD = 30; public const TOKEN_OPEN_CURLY_BRACKET = 31; public const TOKEN_CLOSE_CURLY_BRACKET = 32; public const TOKEN_NEGATED = 33; public const TOKEN_ARROW = 34; public const TOKEN_LABELS = [ self::TOKEN_REFERENCE => '\'&\'', self::TOKEN_UNION => '\'|\'', self::TOKEN_INTERSECTION => '\'&\'', self::TOKEN_NULLABLE => '\'?\'', self::TOKEN_NEGATED => '\'!\'', self::TOKEN_OPEN_PARENTHESES => '\'(\'', self::TOKEN_CLOSE_PARENTHESES => '\')\'', self::TOKEN_OPEN_ANGLE_BRACKET => '\'<\'', self::TOKEN_CLOSE_ANGLE_BRACKET => '\'>\'', self::TOKEN_OPEN_SQUARE_BRACKET => '\'[\'', self::TOKEN_CLOSE_SQUARE_BRACKET => '\']\'', self::TOKEN_OPEN_CURLY_BRACKET => '\'{\'', self::TOKEN_CLOSE_CURLY_BRACKET => '\'}\'', self::TOKEN_COMMA => '\',\'', self::TOKEN_COLON => '\':\'', self::TOKEN_VARIADIC => '\'...\'', self::TOKEN_DOUBLE_COLON => '\'::\'', self::TOKEN_DOUBLE_ARROW => '\'=>\'', self::TOKEN_ARROW => '\'->\'', self::TOKEN_EQUAL => '\'=\'', self::TOKEN_OPEN_PHPDOC => '\'/**\'', self::TOKEN_CLOSE_PHPDOC => '\'*/\'', self::TOKEN_PHPDOC_TAG => 'TOKEN_PHPDOC_TAG', self::TOKEN_PHPDOC_EOL => 'TOKEN_PHPDOC_EOL', self::TOKEN_FLOAT => 'TOKEN_FLOAT', self::TOKEN_INTEGER => 'TOKEN_INTEGER', self::TOKEN_SINGLE_QUOTED_STRING => 'TOKEN_SINGLE_QUOTED_STRING', self::TOKEN_DOUBLE_QUOTED_STRING => 'TOKEN_DOUBLE_QUOTED_STRING', self::TOKEN_IDENTIFIER => 'type', self::TOKEN_THIS_VARIABLE => '\'$this\'', self::TOKEN_VARIABLE => 'variable', self::TOKEN_HORIZONTAL_WS => 'TOKEN_HORIZONTAL_WS', self::TOKEN_OTHER => 'TOKEN_OTHER', self::TOKEN_END => 'TOKEN_END', self::TOKEN_WILDCARD => '*', ]; public const VALUE_OFFSET = 0; public const TYPE_OFFSET = 1; public const LINE_OFFSET = 2; /** @var string|null */ private $regexp; /** * @return list<array{string, int, int}> */ public function tokenize(string $s): array { if ($this->regexp === null) { $this->regexp = $this->generateRegexp(); } preg_match_all($this->regexp, $s, $matches, PREG_SET_ORDER); $tokens = []; $line = 1; foreach ($matches as $match) { $type = (int) $match['MARK']; $tokens[] = [$match[0], $type, $line]; if ($type !== self::TOKEN_PHPDOC_EOL) { continue; } $line++; } $tokens[] = ['', self::TOKEN_END, $line]; return $tokens; } private function generateRegexp(): string { $patterns = [ self::TOKEN_HORIZONTAL_WS => '[\\x09\\x20]++', self::TOKEN_IDENTIFIER => '(?:[\\\\]?+[a-z_\\x80-\\xFF][0-9a-z_\\x80-\\xFF-]*+)++', self::TOKEN_THIS_VARIABLE => '\\$this(?![0-9a-z_\\x80-\\xFF])', self::TOKEN_VARIABLE => '\\$[a-z_\\x80-\\xFF][0-9a-z_\\x80-\\xFF]*+', // '&' followed by TOKEN_VARIADIC, TOKEN_VARIABLE, TOKEN_EQUAL, TOKEN_EQUAL or TOKEN_CLOSE_PARENTHESES self::TOKEN_REFERENCE => '&(?=\\s*+(?:[.,=)]|(?:\\$(?!this(?![0-9a-z_\\x80-\\xFF])))))', self::TOKEN_UNION => '\\|', self::TOKEN_INTERSECTION => '&', self::TOKEN_NULLABLE => '\\?', self::TOKEN_NEGATED => '!', self::TOKEN_OPEN_PARENTHESES => '\\(', self::TOKEN_CLOSE_PARENTHESES => '\\)', self::TOKEN_OPEN_ANGLE_BRACKET => '<', self::TOKEN_CLOSE_ANGLE_BRACKET => '>', self::TOKEN_OPEN_SQUARE_BRACKET => '\\[', self::TOKEN_CLOSE_SQUARE_BRACKET => '\\]', self::TOKEN_OPEN_CURLY_BRACKET => '\\{', self::TOKEN_CLOSE_CURLY_BRACKET => '\\}', self::TOKEN_COMMA => ',', self::TOKEN_VARIADIC => '\\.\\.\\.', self::TOKEN_DOUBLE_COLON => '::', self::TOKEN_DOUBLE_ARROW => '=>', self::TOKEN_ARROW => '->', self::TOKEN_EQUAL => '=', self::TOKEN_COLON => ':', self::TOKEN_OPEN_PHPDOC => '/\\*\\*(?=\\s)\\x20?+', self::TOKEN_CLOSE_PHPDOC => '\\*/', self::TOKEN_PHPDOC_TAG => '@(?:[a-z][a-z0-9-\\\\]+:)?[a-z][a-z0-9-\\\\]*+', self::TOKEN_PHPDOC_EOL => '\\r?+\\n[\\x09\\x20]*+(?:\\*(?!/)\\x20?+)?', self::TOKEN_FLOAT => '(?:-?[0-9]++\\.[0-9]*+(?:e-?[0-9]++)?)|(?:-?[0-9]*+\\.[0-9]++(?:e-?[0-9]++)?)|(?:-?[0-9]++e-?[0-9]++)', self::TOKEN_INTEGER => '-?(?:(?:0b[0-1]++)|(?:0o[0-7]++)|(?:0x[0-9a-f]++)|(?:[0-9]++))', self::TOKEN_SINGLE_QUOTED_STRING => '\'(?:\\\\[^\\r\\n]|[^\'\\r\\n\\\\])*+\'', self::TOKEN_DOUBLE_QUOTED_STRING => '"(?:\\\\[^\\r\\n]|[^"\\r\\n\\\\])*+"', self::TOKEN_WILDCARD => '\\*', // anything but TOKEN_CLOSE_PHPDOC or TOKEN_HORIZONTAL_WS or TOKEN_EOL self::TOKEN_OTHER => '(?:(?!\\*/)[^\\s])++', ]; foreach ($patterns as $type => &$pattern) { $pattern = '(?:' . $pattern . ')(*MARK:' . $type . ')'; } return '~' . implode('|', $patterns) . '~Asi'; } }