<?php

declare (strict_types=1);
namespace PHPStan\PhpDocParser\Ast\ConstExpr;

use PHPStan\PhpDocParser\Ast\NodeAttributes;
use function addcslashes;
use function assert;
use function dechex;
use function ord;
use function preg_replace_callback;
use function sprintf;
use function str_pad;
use function strlen;
use const STR_PAD_LEFT;
class ConstExprStringNode implements \PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNode
{
    public const SINGLE_QUOTED = 1;
    public const DOUBLE_QUOTED = 2;
    use NodeAttributes;
    public string $value;
    /** @var self::SINGLE_QUOTED|self::DOUBLE_QUOTED */
    public $quoteType;
    /**
     * @param self::SINGLE_QUOTED|self::DOUBLE_QUOTED $quoteType
     */
    public function __construct(string $value, int $quoteType)
    {
        $this->value = $value;
        $this->quoteType = $quoteType;
    }
    public function __toString(): string
    {
        if ($this->quoteType === self::SINGLE_QUOTED) {
            // from https://github.com/nikic/PHP-Parser/blob/0ffddce52d816f72d0efc4d9b02e276d3309ef01/lib/PhpParser/PrettyPrinter/Standard.php#L1007
            return sprintf("'%s'", addcslashes($this->value, '\'\\'));
        }
        // from https://github.com/nikic/PHP-Parser/blob/0ffddce52d816f72d0efc4d9b02e276d3309ef01/lib/PhpParser/PrettyPrinter/Standard.php#L1010-L1040
        return sprintf('"%s"', $this->escapeDoubleQuotedString());
    }
    private function escapeDoubleQuotedString(): string
    {
        $quote = '"';
        $escaped = addcslashes($this->value, "\n\r\t\f\v\$" . $quote . '\\');
        // Escape control characters and non-UTF-8 characters.
        // Regex based on https://stackoverflow.com/a/11709412/385378.
        $regex = '/(
              [\x00-\x08\x0E-\x1F] # Control characters
            | [\xC0-\xC1] # Invalid UTF-8 Bytes
            | [\xF5-\xFF] # Invalid UTF-8 Bytes
            | \xE0(?=[\x80-\x9F]) # Overlong encoding of prior code point
            | \xF0(?=[\x80-\x8F]) # Overlong encoding of prior code point
            | [\xC2-\xDF](?![\x80-\xBF]) # Invalid UTF-8 Sequence Start
            | [\xE0-\xEF](?![\x80-\xBF]{2}) # Invalid UTF-8 Sequence Start
            | [\xF0-\xF4](?![\x80-\xBF]{3}) # Invalid UTF-8 Sequence Start
            | (?<=[\x00-\x7F\xF5-\xFF])[\x80-\xBF] # Invalid UTF-8 Sequence Middle
            | (?<![\xC2-\xDF]|[\xE0-\xEF]|[\xE0-\xEF][\x80-\xBF]|[\xF0-\xF4]|[\xF0-\xF4][\x80-\xBF]|[\xF0-\xF4][\x80-\xBF]{2})[\x80-\xBF] # Overlong Sequence
            | (?<=[\xE0-\xEF])[\x80-\xBF](?![\x80-\xBF]) # Short 3 byte sequence
            | (?<=[\xF0-\xF4])[\x80-\xBF](?![\x80-\xBF]{2}) # Short 4 byte sequence
            | (?<=[\xF0-\xF4][\x80-\xBF])[\x80-\xBF](?![\x80-\xBF]) # Short 4 byte sequence (2)
        )/x';
        return preg_replace_callback($regex, static function ($matches) {
            assert(strlen($matches[0]) === 1);
            $hex = dechex(ord($matches[0]));
            return '\x' . str_pad($hex, 2, '0', STR_PAD_LEFT);
        }, $escaped);
    }
    /**
     * @param array<string, mixed> $properties
     */
    public static function __set_state(array $properties): self
    {
        $instance = new self($properties['value'], $properties['quoteType']);
        if (isset($properties['attributes'])) {
            foreach ($properties['attributes'] as $key => $value) {
                $instance->setAttribute($key, $value);
            }
        }
        return $instance;
    }
}
