<?php

namespace Nette\Reflection;

use Nette;

/**
 * Reports information about a function.
 * @property-read array $defaultParameters
 * @property-read bool $closure
 * @property-read Extension $extension
 * @property-read Parameter[] $parameters
 * @property-read bool $disabled
 * @property-read bool $deprecated
 * @property-read bool $internal
 * @property-read bool $userDefined
 * @property-read string $docComment
 * @property-read int $endLine
 * @property-read string $extensionName
 * @property-read string $fileName
 * @property-read string $name
 * @property-read string $namespaceName
 * @property-read int $numberOfParameters
 * @property-read int $numberOfRequiredParameters
 * @property-read string $shortName
 * @property-read int $startLine
 * @property-read array $staticVariables
 */
class GlobalFunction extends \ReflectionFunction
{
    use Nette\SmartObject;

    /** @var string|\Closure */
    private $value;

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

    /**
     * @deprecated
     */
    public function toCallback()
    {
        return new Nette\Callback($this->value);
    }

    public function __toString()
    {
        return $this->getName() . '()';
    }

    /**
     * @return Extension
     */
    public function getExtension()
    {
        return ($name = $this->getExtensionName()) ? new Extension($name) : null;
    }

    /**
     * @return Parameter[]
     */
    public function getParameters()
    {
        foreach ($res = parent::getParameters() as $key => $val) {
            $res[$key] = new Parameter($this->value, $val->getName());
        }
        return $res;
    }

    /**
     * Has method specified annotation?
     * @param  string
     * @return bool
     */
    public function hasAnnotation($name)
    {
        $res = AnnotationsParser::getAll($this);
        return !empty($res[$name]);
    }

    /**
     * Returns an annotation value.
     * @param  string
     * @return IAnnotation
     */
    public function getAnnotation($name)
    {
        $res = AnnotationsParser::getAll($this);
        return isset($res[$name]) ? end($res[$name]) : null;
    }

    /**
     * Returns all annotations.
     * @return IAnnotation[][]
     */
    public function getAnnotations()
    {
        return AnnotationsParser::getAll($this);
    }

    /**
     * Returns value of annotation 'description'.
     * @return string
     */
    public function getDescription()
    {
        return $this->getAnnotation('description');
    }
}
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