Completed
Pull Request — develop (#17)
by Alexandr
02:15
created

AbstractCronTimeFormatValidator::validate()   A

Complexity

Conditions 3
Paths 4

Size

Total Lines 14
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 14
rs 9.4285
cc 3
eloc 9
nc 4
nop 2
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<?php
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namespace FOA\CronBundle\Validator\Constraints;
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\ConstraintValidator;
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/**
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 * @author JM Leroux <[email protected]>
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 */
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abstract class AbstractCronTimeFormatValidator extends ConstraintValidator
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{
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    /**
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     * @param string|int $value
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     * @param Constraint $constraint
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     */
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    public function validate($value, Constraint $constraint)
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    {
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        if (false !== strpos($value, ',')) {
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            $isValid = $this->validateList(explode(',', $value));
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        } else {
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            $isValid = $this->validateItem($value);
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        }
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        if (!$isValid) {
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            $this->context->buildViolation($constraint->message)
0 ignored issues
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Bug introduced by
It seems like you code against a concrete implementation and not the interface Symfony\Component\Valida...ecutionContextInterface as the method buildViolation() does only exist in the following implementations of said interface: Symfony\Component\Valida...ontext\ExecutionContext, Symfony\Component\Valida...\LegacyExecutionContext.

Let’s take a look at an example:

interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.

Available Fixes

  1. Change the type-hint for the parameter:

    class AuthSystem
    {
        public function authenticate(MyUser $user) { /* ... */ }
    }
    
  2. Add an additional type-check:

    class AuthSystem
    {
        public function authenticate(User $user)
        {
            if ($user instanceof MyUser) {
                $this->logger->info(/** ... */);
            }
    
            // or alternatively
            if ( ! $user instanceof MyUser) {
                throw new \LogicException(
                    '$user must be an instance of MyUser, '
                   .'other instances are not supported.'
                );
            }
    
        }
    }
    
Note: PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case.
  1. Add the method to the interface:

    interface User
    {
        /** @return string */
        public function getPassword();
    
        /** @return string */
        public function getDisplayName();
    }
    
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                ->setParameter('%string%', $value)
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                ->addViolation();
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        }
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    }
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    /**
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     * @param array $list
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     *
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     * @return bool
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     */
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    private function validateList($list)
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    {
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        foreach ($list as $item) {
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            if (!$this->validateItem($item)) {
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                return false;
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            }
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        }
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        return true;
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    }
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    /**
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     * @param int|string $item
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     *
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     * @return bool
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     */
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    private function validateItem($item)
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    {
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        if (false !== strpos($item, '-')) {
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            return $this->validateRange($item);
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        }
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        return $this->validateTimeEntry($item);
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    }
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    /**
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     * @param int|string $range
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     *
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     * @return bool
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     */
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    private function validateRange($range)
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    {
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        $items = explode('-', $range);
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        if (count($items) !== 2) {
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            return false;
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        }
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        foreach ($items as $item) {
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            if (!$this->validateTimeEntry($item)) {
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                return false;
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            }
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        }
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        return true;
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    }
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    /**
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     * @param int|string $item
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     *
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     * @return bool
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     */
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    abstract function validateTimeEntry($item);
0 ignored issues
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Best Practice introduced by
It is generally recommended to explicitly declare the visibility for methods.

Adding explicit visibility (private, protected, or public) is generally recommend to communicate to other developers how, and from where this method is intended to be used.

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}
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