Pine Annotations

Introduction

Pine Annotations package makes creating and reading annotations seamlessly in any laravel 5 project. Behind the scenes Pine Annotations make use of the doctrine-annotations project, but tries to simplify its integration with Laravel 5.

License

Pine Annotations is open-sourced software licensed under the MIT license.

Version Compatibility

Installation

$ composer require larachimp/pine-annotations

Configuration

If you are using Laravel >= 5.5, you can skip service registration thanks to Laravel auto package discovery feature.

After installation all you need is to register the LaraChimp\PineAnnotations\PineAnnotationsServiceProvider in your config/app.php configuration file:

'providers' => [
    ...
    LaraChimp\PineAnnotations\PineAnnotationsServiceProvider::class,
],

You can also register the Reader alias which helps in reading object's annotations.

'aliases' => [
    ...
    'AnnotationsReader' => LaraChimp\PineAnnotations\Facades\Reader::class,
]

You can now publish config using the command:

$ php artisan vendor:publish

This will create the file pine-annotations.php in your config directory.

Registering your annotations in the AnnotationRegistry

The config file pine-annotations.php has two sections autoload_files and autoload_namespaces.

autoload_files

'autoload_files' => [
    app_path('Annotations/FooAnnotation.php'),
],

In this array you may include the file paths of all your annotations classes. These will get registered in the AnnotationRegistry. You can include as many files as you need.

autoload_namespaces

'autoload_namespaces' => [
    'App\Annotations',
],

This array contains the namespaces of your annotations classes. This is useful if you want to register all annotations classes of a whole namespace in a single go.

Using the Reader to manually add entries to the Registry.

Alternatively you may use the methods addFilesToRegistry() and addNamespacesToRegistry() to perform manual entries of files and namespaces to the annotation registry.

// Adding files manually to the Registry.
AnnotationsReader::addFilesToRegistry($filesPaths);

// Adding namespaces manually to the Registry.
AnnotationsReader::addNamespacesToRegistry($namespaces);

It is imperative that you register your annotations classes in one way or the other with the Reader. Otherwise AnnotationsReader won't be able to parse them.

The AnnotationsReader

To create an instance of the AnnotationsReader, use the Laravel's IOC to either inject or create it via the app() method or App facade:

<?php

use LaraChimp\PineAnnotations\Support\Reader\AnnotationsReader;

class MyService 
{
    /**
     * AnnotationsReader instance.
     * 
     * @var AnnotationsReader
     */
    protected $annotationsReader;
   
    /**
     * Constructor.
     * 
     * @var AnnotationsReader $annotationsReader
     */
    public function __construct(AnnotationsReader $annotationsReader) 
    {
        $this->annotationsReader = $annotationsReader;
    }
}

or:

$annotationsReader = app(\LaraChimp\PineAnnotations\Support\Reader\AnnotationsReader::class);

Alternatively can also use the AnnotationsReader facade LaraChimp\PineAnnotations\Facades\Reader::class for all annotations reading.

Reading all annotations of a class

Consider the following class which is annotated with the FooAnnotation:

<?php

/**
 * Class Baz.
 *
 * @FooAnnotation(bar="Percy")
 */
class Baz
{
    //
}

To read this class' annotations, simply create an instance of the AnnotationsReader with target as class :

// Read all class annotations on class.
$annotations = AnnotationsReader::target('class')->read(Baz::class);

The AnnotationsReader will return a Collection of the class' annotations with their values filled in the correct attributes :

Illuminate\Support\Collection {
  #items: array:1 [
    0 => FooAnnotation {
      +bar: "Percy"
    }
  ]
}

Note that all annotations are cached by default for convinience. Hence the AnnotationsReader does not have to parse doc blocks each time it reads annotations from a target, which would be rather costly operation otherwise. The AnnotationsReader uses the default cache which you define in your Laravel App.

Reading a specific annotation of a class

Consider the following class which is annotated with the FooAnnotation and FooDoubleAnnotation :

<?php

/**
 * Class Baz.
 *
 * @FooAnnotation(bar="Percy")
 * @FooDoubleAnnotation(bar="Mamedy")
 */
class Baz
{
    //
}

Now we may want to only parse or read the @FooDoubleAnnotation(bar="Mamedy") doc block. To do so, we can use the only() method on our AnnotationsReader instance. The only() method takes as a single argument the annotation's class name :

// Read specific class annotations on class.
$annotations = AnnotationsReader::target('class')->only(FooDoubleAnnotation::class)->read(Baz::class);

This will return Collection with the keys and values of the targetted annotation:

Illuminate\Support\Collection {
  #items: array:1 [
    "bar" => "Mamedy"
  ]
}

Reading all annotations of a property on a class

Consider the following class with the given annotations blocks on the name property:

<?php

class Baz
{
    /**
     * Name.
     *
     * @PropertyAnnotation(bar="Jeffrey")
     * @PropertyDoubleAnnotation(bar="Way")
     *
     * @var string
     */
    protected $name = '';
    
    //
}

To read the annotations of the name property, we will use the target as property and the property's name on the AnnotationsReader :

// Read all class annotations on property.
$annotations = AnnotationsReader::target('property', 'name')->read(Baz::class);

The result is a Collection with all Annotations objects and theirs properties values filled in :

Illuminate\Support\Collection {
  #items: array:2 [
    0 => PropertyAnnotation {
      +bar: "Jeffrey"
    }
    1 => PropertyDoubleAnnotation {
      +bar: "Way"
    }
  ]
}

Reading specific annotation of a property on a class

Consider the following class with the given annotations blocks on the name property:

<?php

class Baz
{
    /**
     * Name.
     *
     * @PropertyAnnotation(bar="Jeffrey")
     * @PropertyDoubleAnnotation(bar="Way")
     *
     * @var string
     */
    protected $name = '';
    
    //
}

Now we may want to only parse or read the @PropertyDoubleAnnotation(bar="Way") doc block. To do so, we will use the target as property together with the property's name and the only() method on our AnnotationsReader instance. The only() method takes as a single argument the annotation's class name :

// Read all class annotations on property.
$annotations = AnnotationsReader::target('property', 'name')->only(PropertyDoubleAnnotation::class)
                                                            ->read(Baz::class);

This will return Collection with the keys and values of the targetted annotation:

Illuminate\Support\Collection {
  #items: array:1 [
    "bar" => "Way"
  ]
}

Reading all annotations of a method on a class

Consider the following class with the given annotations blocks on the someMethod() method :

<?php

class Baz
{  
    /**
     * Some method that does somethin.
     *
     * @MethodAnnotation(bar="Way")
     * @MethodDoubleAnnotation(bar="Otwell")
     *
     * @return string
     */
     public function someMethod()
     {
        return 'I did something.';
     }
}

To read all the annotations of the someMethod() method, we will use target as method and the method's name on our AnnotationsReader instance :

// Read all class annotations on property.
$annotations = AnnotationsReader::target('method', 'someMethod')->read(Baz::class);

The result is a Collection with all Annotations objects and theirs properties values filled in :

Illuminate\Support\Collection {
  #items: array:2 [
    0 => MethodAnnotation {
      +bar: "Way"
    }
    1 => MethodDoubleAnnotation {
      +bar: "Otwell"
    }
  ]
}

Reading a specific annotation of a method on a class

Consider the following class with the given annotations blocks on the someMethod() method :

<?php

class Baz
{  
    /**
     * Some method that does somethin.
     *
     * @MethodAnnotation(bar="Way")
     * @MethodDoubleAnnotation(bar="Otwell")
     *
     * @return string
     */
     public function someMethod()
     {
        return 'I did something.';
     }
}

Now we may want to only parse or read the @MethodDoubleAnnotation(bar="Otwell") doc block. To do so, we will use the target as method together with the method's name and the only() method on our AnnotationsReader instance. The only() method takes as a single argument the annotation's class name :

// Read all class annotations on property.
$annotations = AnnotationsReader::target('method', 'someMethod')->only(MethodDoubleAnnotation::class)
                                                                ->read(Baz::class);

This will return Collection with the keys and values of the targetted annotation:

Illuminate\Support\Collection {
  #items: array:1 [
    "bar" => "Otwell"
  ]
}

Credits

Big Thanks to all developers who worked hard to create something amazing!

Creator

Twitter: @PercyMamedy

GitHub: percymamedy