[李景山php]每天laravel-20161113|FileViewFinder-1.php

namespace Illuminate\View;use InvalidArgumentException;use Illuminate\Filesystem\Filesystem;// about namespaceclass FileViewFinder implements ViewFinderInterface{// FileViewFinder implements ViewFinderInterface    /**     * The filesystem instance.     *     * @var \Illuminate\Filesystem\Filesystem     */    protected $files;//The filesystem instance.    // The protected    /**     * The array of active view paths.     *     * @var array     */    protected $paths;//The array of active view paths    // set the view paths    /**     * The array of views that have been located.     *     * @var array     */    protected $views = [];//The array of views that have been located    // array of views    /**     * The namespace to file path hints.     *     * @var array     */    protected $hints = [];//The namespace to file path hints/ just like notes    /**     * Register a view extension with the finder.     *     * @var array     */    protected $extensions = ['blade.php', 'php'];// Register a view extension with the finder    // get the extension with the finder.    /**     * Create a new file view loader instance.     *     * @param  \Illuminate\Filesystem\Filesystem  $files     * @param  array  $paths     * @param  array  $extensions     * @return void     */    public function __construct(Filesystem $files, array $paths, array $extensions = null)    {// something this construct is always loader instance.        $this->files = $files;// set files        $this->paths = $paths;// set path        if (isset($extensions)) {//if have extensions            $this->extensions = $extensions;// set the extensions        }    }// set the instance    /**     * Get the fully qualified location of the view.     *     * @param  string  $name     * @return string     */    public function find($name)    {//Get the fully qualified location of the view.        if (isset($this->views[$name])) {            return $this->views[$name];        }// return it,just set this world        if ($this->hasHintInformation($name = trim($name))) {// determine this hints            return $this->views[$name] = $this->findNamedPathView($name);// set this path of view        }        return $this->views[$name] = $this->findInPaths($name, $this->paths);// default set this path    }