Create PHP classes using PHP

View source code on Github

A package that creates PHP classes using PHP. That's it.

Installation

Install Classidy through Composer:

$ composer require rougin/classidy

Basic Usage

Creating a simple class

Creating a PHP class only requires the Classidy and Generator classes:

// index.php

use Rougin\Classidy\Classidy;
use Rougin\Classidy\Generator;
use Rougin\Classidy\Method;

// ...

// Create a new class definition ---
$class = new Classidy;
// ---------------------------------

// Define the details of the class ------------
$class->setComment('Sample class for Acme.');
$class->setNamespace('Acme');
$class->setPackage('Acme');
$class->setAuthor('John Doe', 'jdoe@acme.com');
$class->setName('Greet');
// --------------------------------------------

// Add a "greet" method in the class ---
$method = new Method('greet');
$method->setCodeEval(function ()
{
    return 'Hello world!';
});
$class->addMethod($method);
// -------------------------------------

// Generate the class --------
$generator = new Generator;

echo $generator->make($class);
// ---------------------------

$ php index.php

<?php

namespace Acme;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet
{
    public function greet()
    {
        return 'Hello world!';
    }
}

The setCodeLine method can also be used for specifying code of a method in a line based format. This may be useful in adding conditions in generating code of a method:

// index.php

// ...

$shout = false;

$method->setCodeLine(function ($lines) use ($shout)
{
    if ($shout)
    {
        $lines[] = "return 'HELLO WORLD!';";
    }
    else
    {
        $lines[] = "return 'Hello world!';";
    }

    return $lines;
});

// ...

Adding parent class, interfaces

The class can be added with a parent class using extendsTo:

// index.php

use Acme\Hello\Greeter;

// ...

// Define the details of the class ---
// ...

$class->extendsTo(Greeter::class);

// ...
// -----------------------------------

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter
{
    public function greet()
    {
        return 'Hello world!';
    }
}

[!NOTE] If the added parent class or interface is not from the same namespace of the class to be generated, Classidy will automatically import the said parent class/interface.

For adding interfaces, the addInterface method can be used:

// index.php

use Acme\Greetable;
use Acme\Helloable;

// ...

// Define the details of the class ----
// ...

$class->addInterface(Greetable::class);
$class->addInterface(Helloable::class);

// ...
// ------------------------------------

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
    public function greet()
    {
        return 'Hello world!';
    }
}

Adding traits

Similar in defining class and interfaces, adding a trait is possible using addTrait:

// index.php

use Acme\Hello\Traitable;

// ...

// Define the details of the class ---
// ...

$class->addTrait(Traitable::class);

// ...
// -----------------------------------

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Traitable;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet
{
    use Traitable;

    public function greet()
    {
        return 'Hello world!';
    }
}

Adding methods

Based from the first example, the addMethod can be used to add a method to the class:

// index.php

// ...

// Add a "greet" method in the class ---
$method = new Method('greet');
$method->setCodeEval(function ()
{
    return 'Hello world!';
});
$class->addMethod($method);
// -------------------------------------

// ...

To add arguments in a specified method, kindy use the following methods below:

// index.php

// ...

$method = new Method('greet');
$method->addBooleanArgument('shout')
    ->withDefaultValue(false);
$method->setReturn('string');
$method->setCodeEval(function ()
{
    return 'Hello world!';
});
$class->addMethod($method);

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
    /**
     * @param boolean $shout
     *
     * @return string
     */
    public function greet($shout = false)
    {
        return 'Hello world!';
    }
}

To add a class argument without being its type declared, add withoutTypeDeclared after addClassArgument:

// index.php

// ...

$method = new Method('greet');
$method->addClassArgument('test', 'Acme\Test')
    ->withoutTypeDeclared();
$method->setReturn('string');
$method->setCodeEval(function ($test)
{
    return $test->hello();
});
$class->addMethod($method);

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
    /**
     * @param \Acme\Test $test
     *
     * @return string
     */
    public function greet($test)
    {
        return $test->hello();
    }
}

A method can also be defined as protected or private:

// index.php

// ...

$method = new Method('greet');

// Set the method as "protected" ---
$method->asProtected();
// ---------------------------------

// Set the method as "private" ---
$method->asPrivate();
// -------------------------------

// ...

[!NOTE] By default, all of the specified methods are in public visibility.

The method can be alternatively be specified as a @method tag in the class:

// index.php

// ...

$method = new Method('greet');

// ...

// Set as "@method" in the class ---
$method->asTag();
// ---------------------------------

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @method string greet(boolean $shout = false)
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
}

Adding properties

Similiar to adding arguments in a method, adding properties to a class can be done by the following:

// index.php

// ...

$class->addStringProperty('text')
    ->withDefaultValue('Hello world!');

// ...

// Modify "greet" method to access "text" property ---
$method->setCodeEval(function ()
{
    return $this->text;
});
// ---------------------------------------------------

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
    /**
     * @var string
     */
    protected $text = 'Hello world!';

    /**
     * @param boolean $shout
     *
     * @return string
     */
    public function greet($shout = false)
    {
        return $this->text;
    }
}

To change a visibility of a property, the methods asPublic and asPrivate can be used:

// index.php

// ...

$class->addStringProperty('text')
    ->asPrivate()
    ->withDefaultValue('Hello world!');

// ...

[!NOTE] By default, all of the specified properties are in protected visibility.

Alternatively, the property be specified as a @property tag in the class:

// index.php

// ...

$class->addStringProperty('text')->asTag();

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * @property string $text
 *
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
}

Setting an empty class

The setEmpty method can be used to clear any methods and properties previously specified. This maybe useful when generating empty classes without specifying a new Classidy class:

// index.php

// ...

$class->setEmpty();

// ...

$ php index.php

<?php

namespace Acme;

use Acme\Hello\Greeter;

/**
 * Sample class for Acme.
 *
 * @package Acme
 *
 * @author John Doe <jdoe@acme.com>
 */
class Greet extends Greeter implements Greetable, Helloable
{
}