Compiler.php

namespace IlluminateViewCompilers;

use IlluminateFilesystemFilesystem;

abstract class Compiler

{// a abstract class

    protected $files;//The filesystem instance.

    protected $cachePath;//Get the cache path for the compiled views.

    public function __construct(Filesystem $files, $cachePath)

    {

        $this->files = $files;

        $this->cachePath = $cachePath;

    }//_construct

   // files

   // set some construct

    public function getCompiledPath($path)

    {

        return $this->cachePath.'/'.sha1($path).'.php';

    }// get The Compiled Path

    public function isExpired($path)

    {// check is expired

        $compiled = $this->getCompiledPath($path);// compiled

        // If the compiled file doesn't exist we will indicate that the view is expired

        // so that it can be re-compiled. Else, we will verify the last modification

        // of the views is less than the modification times of the compiled views.

        if (! $this->cachePath || ! $this->files->exists($compiled)) {

            return true;

        }// true

        $lastModified = $this->files->lastModified($path);

// last Modified

        return $lastModified >= $this->files->lastModified($compiled);

    }// has this result

}