RuntimeClassDefinition   A
last analyzed

Complexity

Total Complexity 15

Size/Duplication

Total Lines 123
Duplicated Lines 0 %

Coupling/Cohesion

Components 1
Dependencies 3

Test Coverage

Coverage 0%

Importance

Changes 0
Metric Value
dl 0
loc 123
ccs 0
cts 34
cp 0
rs 10
c 0
b 0
f 0
wmc 15
lcom 1
cbo 3

10 Methods

Rating   Name   Duplication   Size   Complexity  
A compile() 0 4 1
A getFilepath() 0 4 1
A isAbstract() 0 4 1
A getExtendsClassDefinition() 0 9 2
A getExtendsClass() 0 9 2
A __construct() 0 4 1
A hasMethod() 0 4 1
A hasConst() 0 20 4
A getMethod() 0 4 1
A hasProperty() 0 4 1
1
<?php
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/**
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 * @author Patsura Dmitry https://github.com/ovr <[email protected]>
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 */
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namespace PHPSA\Definition;
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use PHPSA\Context;
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use PHPSA\Exception\NotImplementedException;
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use ReflectionClass;
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/**
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 * Class created from Reflection
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 */
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class RuntimeClassDefinition extends ClassDefinition
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{
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    /**
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     * @var ReflectionClass
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     */
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    protected $reflection;
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    /**
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     * @param ReflectionClass $reflection
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     */
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    public function __construct(ReflectionClass $reflection)
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    {
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        $this->reflection = $reflection;
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    }
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    /**
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     * @param Context $context
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     * @return $this
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     */
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    public function compile(Context $context)
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    {
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        return $this;
0 ignored issues
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Bug Best Practice introduced by
The return type of return $this; (PHPSA\Definition\RuntimeClassDefinition) is incompatible with the return type declared by the abstract method PHPSA\Definition\AbstractDefinition::compile of type boolean.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

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    }
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    /**
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     * @param string $name
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     * @param boolean|false $inherit
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     * @return bool
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     */
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    public function hasMethod($name, $inherit = false)
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    {
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        return $this->reflection->hasMethod($name);
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    }
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    /**
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     * @param string $name
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     * @param bool $inherit
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     * @return bool
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     */
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    public function hasConst($name, $inherit = false)
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    {
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        if (!$this->reflection->hasConstant($name)) {
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            return false;
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        }
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        // NOTE: ReflectionClass::hasConstant also checks parent classes, so if $inherit is true, the job is already done.
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        if ($inherit) {
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            return true;
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        }
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        // but if it's not, we need to make sure that the constant is defined only in the current class. It means that
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        // we have to check that it has no parent or that the parent does not define the constant.
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        $parent = $this->reflection->getParentClass();
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        if (!$parent) {
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            return true;
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        }
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        return !$parent->hasConstant($name);
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    }
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    /**
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     * @param $name
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     * @param bool $inherit
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     * @return ReflectionClassMethod
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     */
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    public function getMethod($name, $inherit = false)
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    {
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        return new ReflectionClassMethod($this->reflection->getMethod($name));
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    }
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    /**
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     * @param $name
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     * @param bool $inherit
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     * @param bool $isParent It's an internal parameter
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     * @return bool
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     */
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    public function hasProperty($name, $inherit = false, $isParent = true)
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    {
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        return $this->reflection->hasProperty($name);
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    }
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    /**
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     * @return string
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     */
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    public function getFilepath()
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    {
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        throw new NotImplementedException(__FUNCTION__);
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    }
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    /**
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     * @return bool
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     */
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    public function isAbstract()
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    {
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        return $this->reflection->isAbstract();
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    }
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    /**
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     * @return null|RuntimeClassDefinition
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     */
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    public function getExtendsClassDefinition()
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    {
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        $parentReflection = $this->reflection->getParentClass();
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        if (!$parentReflection) {
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            return null;
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        }
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        return new static($parentReflection);
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    }
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    /**
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     * @return null|string
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     */
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    public function getExtendsClass()
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    {
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        $parentReflection = $this->reflection->getParentClass();
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        if (!$parentReflection) {
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            return null;
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        }
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        return $parentReflection->getName();
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    }
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}
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