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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Query\AST\Functions;
use Doctrine\ORM\Query\AST\Node;
use Doctrine\ORM\Query\Parser;
use Doctrine\ORM\Query\SqlWalker;
use Doctrine\ORM\Query\TokenType;
/**
* "SUBSTRING" "(" StringPrimary "," SimpleArithmeticExpression "," SimpleArithmeticExpression ")"
*
* @link www.doctrine-project.org
*/
class SubstringFunction extends FunctionNode
{
public Node $stringPrimary;
public Node|string $firstSimpleArithmeticExpression;
public Node|string|null $secondSimpleArithmeticExpression = null;
public function getSql(SqlWalker $sqlWalker): string
{
$optionalSecondSimpleArithmeticExpression = null;
if ($this->secondSimpleArithmeticExpression !== null) {
$optionalSecondSimpleArithmeticExpression = $sqlWalker->walkSimpleArithmeticExpression($this->secondSimpleArithmeticExpression);
}
return $sqlWalker->getConnection()->getDatabasePlatform()->getSubstringExpression(
$sqlWalker->walkStringPrimary($this->stringPrimary),
$sqlWalker->walkSimpleArithmeticExpression($this->firstSimpleArithmeticExpression),
$optionalSecondSimpleArithmeticExpression,
);
}
public function parse(Parser $parser): void
{
$parser->match(TokenType::T_IDENTIFIER);
$parser->match(TokenType::T_OPEN_PARENTHESIS);
$this->stringPrimary = $parser->StringPrimary();
$parser->match(TokenType::T_COMMA);
$this->firstSimpleArithmeticExpression = $parser->SimpleArithmeticExpression();
$lexer = $parser->getLexer();
if ($lexer->isNextToken(TokenType::T_COMMA)) {
$parser->match(TokenType::T_COMMA);
$this->secondSimpleArithmeticExpression = $parser->SimpleArithmeticExpression();
}
$parser->match(TokenType::T_CLOSE_PARENTHESIS);
}
}
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