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Push — master ( 332a4c...198c54 )
by Kirill
02:13
created

EnumProcessor::process()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 12

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
nc 1
nop 1
dl 0
loc 12
rs 9.8666
c 0
b 0
f 0
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<?php
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/**
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 * This file is part of Railt package.
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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declare(strict_types=1);
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namespace Railt\SDL\Compiler\Processor\Definition;
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use Railt\Parser\Ast\RuleInterface;
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use Railt\Reflection\Contracts\Definition\TypeDefinition;
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use Railt\Reflection\Definition\EnumDefinition;
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use Railt\SDL\Compiler\Ast\Definition\EnumDefinitionNode;
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use Railt\SDL\Compiler\Processor\BaseProcessor;
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/**
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 * Class EnumProcessor
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 */
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class EnumProcessor extends BaseProcessor
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{
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    /**
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     * @param RuleInterface|EnumDefinitionNode $ast
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     * @return null|TypeDefinition
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     */
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    public function process(RuleInterface $ast): ?TypeDefinition
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    {
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        /** @var EnumDefinition $enum */
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        $enum = $ast->getTypeDefinition();
0 ignored issues
show
Bug introduced by
It seems like you code against a concrete implementation and not the interface Railt\Parser\Ast\RuleInterface as the method getTypeDefinition() does only exist in the following implementations of said interface: Railt\SDL\Compiler\Ast\D...DirectiveDefinitionNode, Railt\SDL\Compiler\Ast\D...tion\EnumDefinitionNode, Railt\SDL\Compiler\Ast\D...ion\InputDefinitionNode, Railt\SDL\Compiler\Ast\D...nputUnionDefinitionNode, Railt\SDL\Compiler\Ast\D...InterfaceDefinitionNode, Railt\SDL\Compiler\Ast\D...on\ObjectDefinitionNode, Railt\SDL\Compiler\Ast\D...on\ScalarDefinitionNode, Railt\SDL\Compiler\Ast\D...on\SchemaDefinitionNode, Railt\SDL\Compiler\Ast\D...tion\TypeDefinitionNode, Railt\SDL\Compiler\Ast\D...ion\UnionDefinitionNode.

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();
    }
    
Loading history...
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        $this->immediately(function () use ($ast, $enum) {
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            $enum->withOffset($ast->getOffset());
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            $enum->withDescription($ast->getDescription());
0 ignored issues
show
Bug introduced by
It seems like you code against a concrete implementation and not the interface Railt\Parser\Ast\RuleInterface as the method getDescription() does only exist in the following implementations of said interface: Railt\SDL\Compiler\Ast\D...DirectiveDefinitionNode, Railt\SDL\Compiler\Ast\D...tion\EnumDefinitionNode, Railt\SDL\Compiler\Ast\D...ion\InputDefinitionNode, Railt\SDL\Compiler\Ast\D...nputUnionDefinitionNode, Railt\SDL\Compiler\Ast\D...InterfaceDefinitionNode, Railt\SDL\Compiler\Ast\D...on\ObjectDefinitionNode, Railt\SDL\Compiler\Ast\D...on\ScalarDefinitionNode, Railt\SDL\Compiler\Ast\D...on\SchemaDefinitionNode, Railt\SDL\Compiler\Ast\D...tion\TypeDefinitionNode, Railt\SDL\Compiler\Ast\D...ion\UnionDefinitionNode.

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();
    }
    
Loading history...
35
        });
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        return $enum;
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    }
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}
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