<?php
namespace MailPoetVendor\Symfony\Component\CssSelector\XPath\Extension;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Symfony\Component\CssSelector\Node;
use MailPoetVendor\Symfony\Component\CssSelector\XPath\Translator;
use MailPoetVendor\Symfony\Component\CssSelector\XPath\XPathExpr;
class NodeExtension extends AbstractExtension
{
 public const ELEMENT_NAME_IN_LOWER_CASE = 1;
 public const ATTRIBUTE_NAME_IN_LOWER_CASE = 2;
 public const ATTRIBUTE_VALUE_IN_LOWER_CASE = 4;
 private $flags;
 public function __construct(int $flags = 0)
 {
 $this->flags = $flags;
 }
 public function setFlag(int $flag, bool $on) : self
 {
 if ($on && !$this->hasFlag($flag)) {
 $this->flags += $flag;
 }
 if (!$on && $this->hasFlag($flag)) {
 $this->flags -= $flag;
 }
 return $this;
 }
 public function hasFlag(int $flag) : bool
 {
 return (bool) ($this->flags & $flag);
 }
 public function getNodeTranslators() : array
 {
 return ['Selector' => [$this, 'translateSelector'], 'CombinedSelector' => [$this, 'translateCombinedSelector'], 'Negation' => [$this, 'translateNegation'], 'Function' => [$this, 'translateFunction'], 'Pseudo' => [$this, 'translatePseudo'], 'Attribute' => [$this, 'translateAttribute'], 'Class' => [$this, 'translateClass'], 'Hash' => [$this, 'translateHash'], 'Element' => [$this, 'translateElement']];
 }
 public function translateSelector(Node\SelectorNode $node, Translator $translator) : XPathExpr
 {
 return $translator->nodeToXPath($node->getTree());
 }
 public function translateCombinedSelector(Node\CombinedSelectorNode $node, Translator $translator) : XPathExpr
 {
 return $translator->addCombination($node->getCombinator(), $node->getSelector(), $node->getSubSelector());
 }
 public function translateNegation(Node\NegationNode $node, Translator $translator) : XPathExpr
 {
 $xpath = $translator->nodeToXPath($node->getSelector());
 $subXpath = $translator->nodeToXPath($node->getSubSelector());
 $subXpath->addNameTest();
 if ($subXpath->getCondition()) {
 return $xpath->addCondition(\sprintf('not(%s)', $subXpath->getCondition()));
 }
 return $xpath->addCondition('0');
 }
 public function translateFunction(Node\FunctionNode $node, Translator $translator) : XPathExpr
 {
 $xpath = $translator->nodeToXPath($node->getSelector());
 return $translator->addFunction($xpath, $node);
 }
 public function translatePseudo(Node\PseudoNode $node, Translator $translator) : XPathExpr
 {
 $xpath = $translator->nodeToXPath($node->getSelector());
 return $translator->addPseudoClass($xpath, $node->getIdentifier());
 }
 public function translateAttribute(Node\AttributeNode $node, Translator $translator) : XPathExpr
 {
 $name = $node->getAttribute();
 $safe = $this->isSafeName($name);
 if ($this->hasFlag(self::ATTRIBUTE_NAME_IN_LOWER_CASE)) {
 $name = \strtolower($name);
 }
 if ($node->getNamespace()) {
 $name = \sprintf('%s:%s', $node->getNamespace(), $name);
 $safe = $safe && $this->isSafeName($node->getNamespace());
 }
 $attribute = $safe ? '@' . $name : \sprintf('attribute::*[name() = %s]', Translator::getXpathLiteral($name));
 $value = $node->getValue();
 $xpath = $translator->nodeToXPath($node->getSelector());
 if ($this->hasFlag(self::ATTRIBUTE_VALUE_IN_LOWER_CASE)) {
 $value = \strtolower($value);
 }
 return $translator->addAttributeMatching($xpath, $node->getOperator(), $attribute, $value);
 }
 public function translateClass(Node\ClassNode $node, Translator $translator) : XPathExpr
 {
 $xpath = $translator->nodeToXPath($node->getSelector());
 return $translator->addAttributeMatching($xpath, '~=', '@class', $node->getName());
 }
 public function translateHash(Node\HashNode $node, Translator $translator) : XPathExpr
 {
 $xpath = $translator->nodeToXPath($node->getSelector());
 return $translator->addAttributeMatching($xpath, '=', '@id', $node->getId());
 }
 public function translateElement(Node\ElementNode $node) : XPathExpr
 {
 $element = $node->getElement();
 if ($element && $this->hasFlag(self::ELEMENT_NAME_IN_LOWER_CASE)) {
 $element = \strtolower($element);
 }
 if ($element) {
 $safe = $this->isSafeName($element);
 } else {
 $element = '*';
 $safe = \true;
 }
 if ($node->getNamespace()) {
 $element = \sprintf('%s:%s', $node->getNamespace(), $element);
 $safe = $safe && $this->isSafeName($node->getNamespace());
 }
 $xpath = new XPathExpr('', $element);
 if (!$safe) {
 $xpath->addNameTest();
 }
 return $xpath;
 }
 public function getName() : string
 {
 return 'node';
 }
 private function isSafeName(string $name) : bool
 {
 return 0 < \preg_match('~^[a-zA-Z_][a-zA-Z0-9_.-]*$~', $name);
 }
}
