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<?php
namespace Egulias\EmailValidator\Parser;
use Egulias\EmailValidator\EmailLexer;
use Egulias\EmailValidator\Result\Result;
use Egulias\EmailValidator\Warning\QuotedPart;
use Egulias\EmailValidator\Result\InvalidEmail;
use Egulias\EmailValidator\Parser\CommentStrategy\CommentStrategy;
use Egulias\EmailValidator\Result\Reason\UnclosedComment;
use Egulias\EmailValidator\Result\Reason\UnOpenedComment;
use Egulias\EmailValidator\Warning\Comment as WarningComment;
class Comment extends PartParser
{
/**
* @var int
*/
private $openedParenthesis = 0;
/**
* @var CommentStrategy
*/
private $commentStrategy;
public function __construct(EmailLexer $lexer, CommentStrategy $commentStrategy)
{
$this->lexer = $lexer;
$this->commentStrategy = $commentStrategy;
}
public function parse() : Result
{
if (((array) $this->lexer->token)['type'] === EmailLexer::S_OPENPARENTHESIS) {
$this->openedParenthesis++;
if($this->noClosingParenthesis()) {
return new InvalidEmail(new UnclosedComment(), ((array) $this->lexer->token)['value']);
}
}
if (((array) $this->lexer->token)['type'] === EmailLexer::S_CLOSEPARENTHESIS) {
return new InvalidEmail(new UnOpenedComment(), ((array) $this->lexer->token)['value']);
}
$this->warnings[WarningComment::CODE] = new WarningComment();
$moreTokens = true;
while ($this->commentStrategy->exitCondition($this->lexer, $this->openedParenthesis) && $moreTokens){
if ($this->lexer->isNextToken(EmailLexer::S_OPENPARENTHESIS)) {
$this->openedParenthesis++;
}
$this->warnEscaping();
if($this->lexer->isNextToken(EmailLexer::S_CLOSEPARENTHESIS)) {
$this->openedParenthesis--;
}
$moreTokens = $this->lexer->moveNext();
}
if($this->openedParenthesis >= 1) {
return new InvalidEmail(new UnclosedComment(), ((array) $this->lexer->token)['value']);
}
if ($this->openedParenthesis < 0) {
return new InvalidEmail(new UnOpenedComment(), ((array) $this->lexer->token)['value']);
}
$finalValidations = $this->commentStrategy->endOfLoopValidations($this->lexer);
$this->warnings = array_merge($this->warnings, $this->commentStrategy->getWarnings());
return $finalValidations;
}
/**
* @return bool
*/
private function warnEscaping() : bool
{
//Backslash found
if (((array) $this->lexer->token)['type'] !== EmailLexer::S_BACKSLASH) {
return false;
}
if (!$this->lexer->isNextTokenAny(array(EmailLexer::S_SP, EmailLexer::S_HTAB, EmailLexer::C_DEL))) {
return false;
}
$this->warnings[QuotedPart::CODE] =
new QuotedPart($this->lexer->getPrevious()['type'], ((array) $this->lexer->token)['type']);
return true;
}
private function noClosingParenthesis() : bool
{
try {
$this->lexer->find(EmailLexer::S_CLOSEPARENTHESIS);
return false;
} catch (\RuntimeException $e) {
return true;
}
}
}