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<?php
namespace Illuminate\View\Engines;
use Illuminate\Filesystem\Filesystem;
use Illuminate\View\Compilers\CompilerInterface;
use Illuminate\View\ViewException;
use Throwable;
class CompilerEngine extends PhpEngine
{
/**
* The Blade compiler instance.
*
* @var \Illuminate\View\Compilers\CompilerInterface
*/
protected $compiler;
/**
* A stack of the last compiled templates.
*
* @var array
*/
protected $lastCompiled = [];
/**
* The view paths that were compiled or are not expired, keyed by the path.
*
* @var array<string, true>
*/
protected $compiledOrNotExpired = [];
/**
* Create a new compiler engine instance.
*
* @param \Illuminate\View\Compilers\CompilerInterface $compiler
* @param \Illuminate\Filesystem\Filesystem|null $files
* @return void
*/
public function __construct(CompilerInterface $compiler, Filesystem $files = null)
{
parent::__construct($files ?: new Filesystem);
$this->compiler = $compiler;
}
/**
* Get the evaluated contents of the view.
*
* @param string $path
* @param array $data
* @return string
*/
public function get($path, array $data = [])
{
$this->lastCompiled[] = $path;
// If this given view has expired, which means it has simply been edited since
// it was last compiled, we will re-compile the views so we can evaluate a
// fresh copy of the view. We'll pass the compiler the path of the view.
if (! isset($this->compiledOrNotExpired[$path]) && $this->compiler->isExpired($path)) {
$this->compiler->compile($path);
}
// Once we have the path to the compiled file, we will evaluate the paths with
// typical PHP just like any other templates. We also keep a stack of views
// which have been rendered for right exception messages to be generated.
try {
$results = $this->evaluatePath($this->compiler->getCompiledPath($path), $data);
} catch (ViewException $e) {
if (! str($e->getMessage())->contains(['No such file or directory', 'File does not exist at path'])) {
throw $e;
}
if (! isset($this->compiledOrNotExpired[$path])) {
throw $e;
}
$this->compiler->compile($path);
$results = $this->evaluatePath($this->compiler->getCompiledPath($path), $data);
}
$this->compiledOrNotExpired[$path] = true;
array_pop($this->lastCompiled);
return $results;
}
/**
* Handle a view exception.
*
* @param \Throwable $e
* @param int $obLevel
* @return void
*
* @throws \Throwable
*/
protected function handleViewException(Throwable $e, $obLevel)
{
$e = new ViewException($this->getMessage($e), 0, 1, $e->getFile(), $e->getLine(), $e);
parent::handleViewException($e, $obLevel);
}
/**
* Get the exception message for an exception.
*
* @param \Throwable $e
* @return string
*/
protected function getMessage(Throwable $e)
{
return $e->getMessage().' (View: '.realpath(last($this->lastCompiled)).')';
}
/**
* Get the compiler implementation.
*
* @return \Illuminate\View\Compilers\CompilerInterface
*/
public function getCompiler()
{
return $this->compiler;
}
/**
* Clear the cache of views that were compiled or not expired.
*
* @return void
*/
public function forgetCompiledOrNotExpired()
{
$this->compiledOrNotExpired = [];
}
}
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