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vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php

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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 = [];
+
+    /**
+     * 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[] = $path;
+
+        // If this given view has expired, which means it has simply been edited since
+        // it was last compiled, we will re-compile the views so we can evaluate a
+        // fresh copy of the view. We'll pass the compiler the path of the view.
+        if ($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.
+        $results = $this->evaluatePath($this->compiler->getCompiledPath($path), $data);
+
+        array_pop($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;
+    }
+}

vendor/laravel/framework/src/Illuminate/View/Engines/Engine.php

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+<?php
+
+namespace Illuminate\View\Engines;
+
+abstract class Engine
+{
+    /**
+     * The view that was last to be rendered.
+     *
+     * @var string
+     */
+    protected $lastRendered;
+
+    /**
+     * Get the last view that was rendered.
+     *
+     * @return string
+     */
+    public function getLastRendered()
+    {
+        return $this->lastRendered;
+    }
+}

vendor/laravel/framework/src/Illuminate/View/Engines/EngineResolver.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace Illuminate\View\Engines;
+
+use Closure;
+use InvalidArgumentException;
+
+class EngineResolver
+{
+    /**
+     * The array of engine resolvers.
+     *
+     * @var array
+     */
+    protected $resolvers = [];
+
+    /**
+     * The resolved engine instances.
+     *
+     * @var array
+     */
+    protected $resolved = [];
+
+    /**
+     * Register a new engine resolver.
+     *
+     * The engine string typically corresponds to a file extension.
+     *
+     * @param  string  $engine
+     * @param  \Closure  $resolver
+     * @return void
+     */
+    public function register($engine, Closure $resolver)
+    {
+        $this->forget($engine);
+
+        $this->resolvers[$engine] = $resolver;
+    }
+
+    /**
+     * Resolve an engine instance by name.
+     *
+     * @param  string  $engine
+     * @return \Illuminate\Contracts\View\Engine
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function resolve($engine)
+    {
+        if (isset($this->resolved[$engine])) {
+            return $this->resolved[$engine];
+        }
+
+        if (isset($this->resolvers[$engine])) {
+            return $this->resolved[$engine] = call_user_func($this->resolvers[$engine]);
+        }
+
+        throw new InvalidArgumentException("Engine [{$engine}] not found.");
+    }
+
+    /**
+     * Remove a resolved engine.
+     *
+     * @param  string  $engine
+     * @return void
+     */
+    public function forget($engine)
+    {
+        unset($this->resolved[$engine]);
+    }
+}

vendor/laravel/framework/src/Illuminate/View/Engines/FileEngine.php

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+<?php
+
+namespace Illuminate\View\Engines;
+
+use Illuminate\Contracts\View\Engine;
+use Illuminate\Filesystem\Filesystem;
+
+class FileEngine implements Engine
+{
+    /**
+     * The filesystem instance.
+     *
+     * @var \Illuminate\Filesystem\Filesystem
+     */
+    protected $files;
+
+    /**
+     * Create a new file engine instance.
+     *
+     * @param  \Illuminate\Filesystem\Filesystem  $files
+     * @return void
+     */
+    public function __construct(Filesystem $files)
+    {
+        $this->files = $files;
+    }
+
+    /**
+     * Get the evaluated contents of the view.
+     *
+     * @param  string  $path
+     * @param  array  $data
+     * @return string
+     */
+    public function get($path, array $data = [])
+    {
+        return $this->files->get($path);
+    }
+}

vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php

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+<?php
+
+namespace Illuminate\View\Engines;
+
+use Illuminate\Contracts\View\Engine;
+use Illuminate\Filesystem\Filesystem;
+use Throwable;
+
+class PhpEngine implements Engine
+{
+    /**
+     * The filesystem instance.
+     *
+     * @var \Illuminate\Filesystem\Filesystem
+     */
+    protected $files;
+
+    /**
+     * Create a new file engine instance.
+     *
+     * @param  \Illuminate\Filesystem\Filesystem  $files
+     * @return void
+     */
+    public function __construct(Filesystem $files)
+    {
+        $this->files = $files;
+    }
+
+    /**
+     * Get the evaluated contents of the view.
+     *
+     * @param  string  $path
+     * @param  array  $data
+     * @return string
+     */
+    public function get($path, array $data = [])
+    {
+        return $this->evaluatePath($path, $data);
+    }
+
+    /**
+     * Get the evaluated contents of the view at the given path.
+     *
+     * @param  string  $path
+     * @param  array  $data
+     * @return string
+     */
+    protected function evaluatePath($path, $data)
+    {
+        $obLevel = ob_get_level();
+
+        ob_start();
+
+        // We'll evaluate the contents of the view inside a try/catch block so we can
+        // flush out any stray output that might get out before an error occurs or
+        // an exception is thrown. This prevents any partial views from leaking.
+        try {
+            $this->files->getRequire($path, $data);
+        } catch (Throwable $e) {
+            $this->handleViewException($e, $obLevel);
+        }
+
+        return ltrim(ob_get_clean());
+    }
+
+    /**
+     * Handle a view exception.
+     *
+     * @param  \Throwable  $e
+     * @param  int  $obLevel
+     * @return void
+     *
+     * @throws \Throwable
+     */
+    protected function handleViewException(Throwable $e, $obLevel)
+    {
+        while (ob_get_level() > $obLevel) {
+            ob_end_clean();
+        }
+
+        throw $e;
+    }
+}