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SavvyWolf - MANAGER

Edit File: Lexer.php

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Neon;

/** @internal */
final class Lexer
{
	public const Patterns = [
		// strings
		Token::String => '
			\'\'\'\n (?:(?: [^\n] | \n(?![\t\ ]*+\'\'\') )*+ \n)?[\t\ ]*+\'\'\' |
			"""\n (?:(?: [^\n] | \n(?![\t\ ]*+""") )*+ \n)?[\t\ ]*+""" |
			\' (?: \'\' | [^\'\n] )*+ \' |
			" (?: \\\\. | [^"\\\\\n] )*+ "
		',

// literal / boolean / integer / float
		Token::Literal => '
			(?: [^#"\',:=[\]{}()\n\t\ `-] | (?<!["\']) [:-] [^"\',=[\]{}()\n\t\ ] )
			(?:
				[^,:=\]})(\n\t\ ]++ |
				:(?! [\n\t\ ,\]})] | $ ) |
				[\ \t]++ [^#,:=\]})(\n\t\ ]
			)*+
		',

// punctuation
		Token::Char => '[,:=[\]{}()-]',

// comment
		Token::Comment => '\#.*+',

// new line
		Token::Newline => '\n++',

// whitespace
		Token::Whitespace => '[\t\ ]++',
	];

public function tokenize(string $input): TokenStream
	{
		$input = str_replace("\r", '', $input);
		$pattern = '~(' . implode(')|(', self::Patterns) . ')~Amixu';
		$res = preg_match_all($pattern, $input, $tokens, PREG_SET_ORDER);
		if ($res === false) {
			throw new Exception('Invalid UTF-8 sequence.');
		}

$types = array_keys(self::Patterns);
		$offset = 0;
		foreach ($tokens as &$token) {
			$type = null;
			for ($i = 1; $i <= count($types); $i++) {
				if (!isset($token[$i])) {
					break;
				} elseif ($token[$i] !== '') {
					$type = $types[$i - 1];
					if ($type === Token::Char) {
						$type = $token[0];
					}

break;
				}
			}

$token = new Token($token[0], $type);
			$offset += strlen($token->value);
		}

$stream = new TokenStream($tokens);
		if ($offset !== strlen($input)) {
			$s = str_replace("\n", '\n', substr($input, $offset, 40));
			$stream->error("Unexpected '$s'", count($tokens));
		}

return $stream;
	}

public static function requiresDelimiters(string $s): bool
	{
		return preg_match('~[\x00-\x1F]|^[+-.]?\d|^(true|false|yes|no|on|off|null)$~Di', $s)
			|| !preg_match('~^' . self::Patterns[Token::Literal] . '$~Dx', $s);
	}
}