Tools::validInputParameters() - Code Metrics - Inspection of "[UPD] Inclusão das consultas v1.04" - nfephp-org/sped-efdreinf - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Pull Request — master (#62)

by Roberto
created 2018-12-14 14:07 UTC
Tools::validInputParameters() B

↳ Parent: Tools
Complexity

Conditions	9
Paths	10
Size

Total Lines
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	0
CRAP Score	90
Importance

Changes
Metric	Value
dl	0
loc	22
ccs	0
cts	22
cp	0
rs	8.0555
c	0
b	0
f	0
cc	9
nc	10
nop	2
crap	90
<?php

namespace NFePHP\EFDReinf;

/**
 * Classe Tools, performs communication with the EFDReinf webservice
 *
 * @category  API
 * @package   NFePHP\EFDReinf\Tools
 * @copyright Copyright (c) 2017
 * @license   https://www.gnu.org/licenses/lgpl-3.0.txt LGPLv3
 * @license   https://www.gnu.org/licenses/gpl-3.0.txt GPLv3
 * @license   https://opensource.org/licenses/mit-license.php MIT
 * @author    Roberto L. Machado <linux.rlm at gmail dot com>
 * @link      http://github.com/nfephp-org/sped-efdreinf for the canonical source repository
 */
use NFePHP\Common\Certificate;
use NFePHP\Common\Validator;
use NFePHP\EFDReinf\Common\Tools as ToolsBase;
use NFePHP\EFDReinf\Common\FactoryInterface;
use NFePHP\EFDReinf\Common\Soap\SoapCurl;
use NFePHP\EFDReinf\Common\Soap\SoapInterface;
use NFePHP\EFDReinf\Exception\ProcessException;
use stdClass;
use NFePHP\EFDReinf\Common\Factory;

class Tools extends ToolsBase
{
    const CONSULTA_CONSOLIDADA = 1;
    const CONSULTA_R1000 = 2;
    const CONSULTA_R1070 = 3;
    const CONSULTA_R2010 = 4;
    const CONSULTA_R2020 = 5;
    const CONSULTA_R2030 = 6;
    const CONSULTA_R2040 = 7;
    const CONSULTA_R2050 = 8;
    const CONSULTA_R2060 = 9;
    const CONSULTA_R2098 = 10;
    const CONSULTA_R2099 = 11;
    const CONSULTA_R3010 = 12;
    
    /**
     * @var string
     */
    public $lastRequest;
    /**
     * @var string
     */
    public $lastResponse;
    /**
     * @var SoapInterface
     */
    public $soap;
    /**
     * @var array
     */
    protected $soapnamespaces = [
        'xmlns:soapenv' => "http://schemas.xmlsoap.org/soap/envelope/",
        'xmlns:sped'=> "http://sped.fazenda.gov.br/"
    ];
    /**
     * @var array
     */
    protected $uri = [
        '1' => 'https://reinf.receita.fazenda.gov.br/WsREINF/RecepcaoLoteReinf.svc',
        '2' => 'https://preprodefdreinf.receita.fazenda.gov.br/WsREINF/RecepcaoLoteReinf.svc'
        
    ];
    /**
     * @var array
     */
    protected $uriconsulta = [
        '1' => 'https://reinf.receita.fazenda.gov.br/WsREINF/ConsultasReinf.svc',
        '2' => 'https://preprodefdreinf.receita.fazenda.gov.br/WsREINF/ConsultasReinf.svc'
    ];
    /**
     * @var string
     */
    protected $action;
    /**
     * @var string
     */
    protected $method;
    
    /**
     * Constructor
     * @param string $config
     * @param Certificate $certificate
     */
    public function __construct($config, Certificate $certificate)
    {
        parent::__construct($config, $certificate);
    }
    
    /**
     * SOAP communication dependency injection
     * @param SoapInterface $soap
     */
    public function loadSoapClass(SoapInterface $soap)
    {
        $this->soap = $soap;
    }
    
    /**
     * Run EFD-REINF Query
     * @param integer $mod
     * @param stdClass $std
     * @throws ProcessException
     */
    public function consultar($mod, stdClass $std = null)
    {
        if (isset($std)) {
            //converte os nomes das propriedades do stdClass para caixa baixa
            $std = Factory::propertiesToLower($std);
        }
        switch ($mod) {
            case 1:
                $evt = 0;
                $request = $this->consultConsolidadas($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 2:
                $evt = 1000;
                $request = $this->consultR1($evt);
                break;
            case 3:
                $evt = 1070;
                $request = $this->consultR1($evt);
                break;
            case 4:
                $evt = 2010;
                $request = $this->consultR2010($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 5:
                $evt = 2020;
                $request = $this->consultR2020($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 6:
                $evt = 2030;
                $request = $this->consultR20($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 7:
                $evt = 2040;
                $request = $this->consultR20($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 8:
                $evt = 2050;
                $request = $this->consultR20($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 9:
                $evt = 2060;
                $request = $this->consultR2060($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 10:
                $evt = 2098;
                $request = $this->consultR209($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 11:
                $evt = 2099;
                $request = $this->consultR209($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            case 12:
                $evt = 3010;
                $request = $this->consultR3010($evt, $std);
function notNullable(stdClass $x) { }

// Unsafe
function withoutCheck(stdClass $x = null) {
    notNullable($x);
}

// Safe - Alternative 1: Adding Additional Type-Check
function withCheck(stdClass $x = null) {
    if ($x instanceof stdClass) {
        notNullable($x);
    }
}

// Safe - Alternative 2: Changing Parameter
function withNonNullableParam(stdClass $x) {
    notNullable($x);
}
                break;
            default:
                throw ProcessException::wrongArgument(2003, '');
        }
        $this->lastResponse = $this->sendRequest($request);
        return $this->lastResponse;
    }
    
    /**
     * Consultation of consolidated information
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    public function consultConsolidadas($evt, stdClass $std)

    {
        $properties = [
            'tipoinscricaocontribuinte' => [
                'required' => true,
                'type' => 'integer',
                'min' => 1,
                'max' => 2
            ],
            'numeroinscricaocontribuinte' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
            'numeroprotocolofechamento' => [
                'required' => true,
                'type' => 'string',
                'regex' => ''
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaInformacoesConsolidadas";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoInscricaoContribuinte>{$std->tipoinscricaocontribuinte}</sped:tipoInscricaoContribuinte>"
            . "<sped:numeroInscricaoContribuinte>{$std->numeroinscricaocontribuinte}</sped:numeroInscricaoContribuinte>"
            . "<sped:numeroProtocoloFechamento>{$std->numeroprotocolofechamento}</sped:numeroProtocoloFechamento>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    /**
     * Consultation R1000 and R1070
     * @param integer $evt
     * @return string
     */
    protected function consultR1($evt)
    {
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    /**
     * Consultation R2010
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    protected function consultR2010($evt, $std)
    {
        $properties = [
            'perapur' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^(19[0-9][0-9]|2[0-9][0-9][0-9])[-](0?[1-9]|1[0-2])$'
            ],
            'tpinscestab' => [
                'required' => true,
                'type' => 'integer',
                'min' => 1,
                'max' => 2
            ],
            'nrinscestab' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
            'cnpjprestador' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{14}$'
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "<sped:perApur>{$std->perapur}</sped:dtApur>"
            . "<sped:tpInscEstab>{$std->tpinscestab}</sped:tpInscEstab>"
            . "<sped:nrInscEstab>{$std->nrinscestab}</sped:nrInscEstab>"
            . "<sped:cnpjPrestador>{$std->cnpjprestador}</sped:cnpjPrestador>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    /**
     * Consultation R2020
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    protected function consultR2020($evt, $std)
    {
        $properties = [
            'perapur' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^(19[0-9][0-9]|2[0-9][0-9][0-9])[-](0?[1-9]|1[0-2])$'
             ],
            'nrinscestabprest' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
            'tpinsctomador' => [
                'required' => true,
                'type' => 'integer',
                'min' => 1,
                'max' => 2
            ],
            'nrinsctomador' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "<sped:perApur>{$std->perapur}</sped:dtApur>"
            . "<sped:nrInscEstabPrest>{$std->nrinscestabprest}</sped:nrInscEstabPrest>"
            . "<sped:tpInscTomador>{$std->tpinsctomador}</sped:tpInscTomador>"
            . "<sped:nrInscTomador>{$std->nrinsctomador}</sped:nrInscTomador>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    /**
     * Consultation R2030 and R2040 and R2050
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    protected function consultR20($evt, $std)
    {
        $properties = [
            'perapur' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^(19[0-9][0-9]|2[0-9][0-9][0-9])[-](0?[1-9]|1[0-2])$'
            ],
            'nrinscestab' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "<sped:perApur>{$std->perapur}</sped:dtApur>"
            . "<sped:nrInscEstab>{$std->nrinscestab}</sped:nrInscEstab>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    /**
     * Consultation R2060
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    protected function consultR2060($evt, $std)
    {
        $properties = [
            'perapur' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^(19[0-9][0-9]|2[0-9][0-9][0-9])[-](0?[1-9]|1[0-2])$'
            ],
            'nrinscestabprest' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
            'tpinscestab' => [
                'required' => true,
                'type' => 'integer',
                'min' => 1,
                'max' => 2
            ],
            'nrinscestab' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "<sped:perApur>{$std->perapur}</sped:dtApur>"
            . "<sped:tpInscEstab>{$std->tpinscestab}</sped:tpInscEstab>"
            . "<sped:nrInscEstab>{$std->nrinscestab}</sped:nrInscEstab>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    /**
     * Consultation R2098 and R2099
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    protected function consultR209($evt, $std)
    {
        $properties = [
            'perapur' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^(19[0-9][0-9]|2[0-9][0-9][0-9])[-](0?[1-9]|1[0-2])$'
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "<sped:perApur>{$std->perapur}</sped:dtApur>"
            . "</sped:{$this->method}>";
        return $request;
    }
   
    /**
     * Consultation R3010
     * @param integer $evt
     * @param stdClass $std
     * @return string
     */
    protected function consultR3010($evt, $std)
    {
        $properties = [
            'dtapur' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^(19[0-9][0-9]|2[0-9][0-9][0-9])[-](0?[1-9]|1[0-2])[-](0?[1-9]|[1-2][0-9]|3[0-1])$'
            ],
            'nrinscestabelecimento' => [
                'required' => true,
                'type' => 'string',
                'regex' => '^[0-9]{11,14}$'
            ],
        ];
        $this->validInputParameters($properties, $std);
        
        $this->method = "ConsultaReciboEvento{$evt}";
        $this->action = "http://sped.fazenda.gov.br/ConsultasReinf/".$this->method;
        $request = "<sped:{$this->method}>"
            . "<sped:tipoEvento>{$evt}</sped:tipoEvento>"
            . "<sped:tpInsc>{$this->tpInsc}</sped:tpInsc>"
            . "<sped:nrInsc>{$this->nrInsc}</sped:nrInsc>"
            . "<sped:dtApur>{$std->dtapur}</sped:dtApur>"
            . "<sped:nrInscEstabelecimento>{$std->nrinscestabelecimento}</sped:nrInscEstabelecimento>"
            . "</sped:{$this->method}>";
        return $request;
    }
    
    
    /**
     * Send batch of events
     * @param  integer $grupo
     * @param array $eventos
     * @return string
     */
    public function enviarLoteEventos($grupo, $eventos = [])
    {
        if (empty($eventos)) {
            return '';
        }
        //check number of events
        $nEvt = count($eventos);
        if ($nEvt > 100) {
            throw ProcessException::wrongArgument(2000, $nEvt);
        }
        $this->method = "ReceberLoteEventos";
        $this->action = "http://sped.fazenda.gov.br/RecepcaoLoteReinf/ReceberLoteEventos";
        $xml = "";
        foreach ($eventos as $evt) {
            if (!is_a($evt, '\NFePHP\EFDReinf\Common\FactoryInterface')) {
                throw ProcessException::wrongArgument(2002, '');
            }
            //verifica se o evento pertence ao grupo indicado
            if (! in_array($evt->alias(), $this->grupos[$grupo])) {
                throw new \RuntimeException(
                    'O evento ' . $evt->alias() . ' não pertence a este grupo [ '
                    . $this->eventGroup[$grupo] . ' ].'
                );
            }
            $this->checkCertificate($evt);
            $xml .= "<evento id=\"".$evt->getId()."\">";
            $xml .= $evt->toXML();
            $xml .= "</evento>";
        }
        //build request
        $request = "<Reinf xmlns=\"http://www.reinf.esocial.gov.br/schemas/envioLoteEventos/v"
            . $this->serviceVersion."\" >"
            . "<loteEventos>"
            . $xml
            . "</loteEventos>"
            . "</Reinf>";
        //validate requisition with XSD
        $xsd = $this->path
            . "schemes/comunicacao/v$this->serviceVersion/"
            . $this->serviceXsd['EnvioLoteEventos']['name'];
        Validator::isValid($request, $xsd);
        //build soap body
        $body = "<sped:ReceberLoteEventos>"
            . "<sped:loteEventos>"
            . $request
            . "</sped:loteEventos>"
            . "</sped:ReceberLoteEventos>";
        $this->lastResponse = $this->sendRequest($body);
        return $this->lastResponse;
    }
    
    /**
     * Send request to webservice
     * @param string $request
     * @return string
     */
    protected function sendRequest($request)
    {
        if (empty($this->soap)) {
            $this->soap = new SoapCurl($this->certificate);
        }
        $envelope = "<soapenv:Envelope ";
        foreach ($this->soapnamespaces as $key => $xmlns) {
            $envelope .= "$key = \"$xmlns\" ";
        }
        $envelope .= ">"
            . "<soapenv:Header/>"
            . "<soapenv:Body>"
            . $request
            . "</soapenv:Body>"
            . "</soapenv:Envelope>";
        
        $msgSize = strlen($envelope);
        $parameters = [
            "Content-Type: text/xml;charset=UTF-8",
            "SOAPAction: \"$this->action\"",
            "Content-length: $msgSize"
        ];
        if ($this->method == 'ReceberLoteEventos') {
            $url = $this->uri[$this->tpAmb];
        } else {
            $url = $this->uriconsulta[$this->tpAmb];
        }
        $this->lastRequest = $envelope;
        return (string) $this->soap->send(
            $this->method,
            $url,
            $this->action,
            $envelope,
            $parameters
        );
    }

    /**
     * Verify the availability of a digital certificate.
     * If available, place it where it is needed
     * @param FactoryInterface $evento
     * @throws RuntimeException
     */
    protected function checkCertificate(FactoryInterface $evento)
    {
        //try to get certificate from event
        $certificate = $evento->getCertificate();
        if (empty($certificate)) {
            $evento->setCertificate($this->certificate);
        }
    }
    
    protected function validInputParameters($properties, $std)
    {
        foreach ($properties as $key => $rules) {
            $r = json_decode(json_encode($rules));
            if ($r->required) {
                if (!isset($std->$key)) {
                    throw new \Exception("$key não foi passado como parâmetro e é obrigatório.");
                }
                $value = $std->$key;
                if ($r->type === 'integer') {
                    if ($value < $r->min || $value > $r->max) {
                        throw new \Exception("$key contêm um valor invalido [$value].");
                    }
                }
                if ($r->type === 'string') {
                    if (!preg_match("/{$r->regex}/", $value)) {
                        throw new \Exception("$key contêm um valor invalido [$value].");
                    }
                }
            }
        }
    }
}

nfephp-org / sped-efdreinf

Pull Request — master (#62)

Tools::validInputParameters() B

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