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| 1 | +<?php |
| 2 | + |
| 3 | +namespace Livewire\Blaze; |
| 4 | + |
| 5 | +use Illuminate\Contracts\View\Factory; |
| 6 | +use Illuminate\Support\Facades\File; |
| 7 | +use Illuminate\View\Compilers\BladeCompiler; |
| 8 | +use Livewire\Blaze\Runtime\BlazeRuntime; |
| 9 | +use ReflectionClass; |
| 10 | + |
| 11 | +/** |
| 12 | + * Handles isolated Blade rendering used during compile-time folding. |
| 13 | + */ |
| 14 | +class BladeRenderer |
| 15 | +{ |
| 16 | + public function __construct( |
| 17 | + protected BladeCompiler $blade, |
| 18 | + protected Factory $factory, |
| 19 | + protected BlazeRuntime $runtime, |
| 20 | + protected BlazeManager $manager, |
| 21 | + ) {} |
| 22 | + |
| 23 | + /** |
| 24 | + * Get the temporary cache directory path used during isolated rendering. |
| 25 | + */ |
| 26 | + public function getTemporaryCachePath(): string |
| 27 | + { |
| 28 | + return config('view.compiled').'/blaze'; |
| 29 | + } |
| 30 | + |
| 31 | + /** |
| 32 | + * Render a Blade template string in isolation by freezing and restoring compiler state. |
| 33 | + */ |
| 34 | + public function render(string $template): string |
| 35 | + { |
| 36 | + $temporaryCachePath = $this->getTemporaryCachePath(); |
| 37 | + |
| 38 | + File::ensureDirectoryExists($temporaryCachePath); |
| 39 | + |
| 40 | + $restoreFactory = $this->freezeObjectProperties($this->factory, [ |
| 41 | + 'renderCount' => 0, |
| 42 | + 'renderedOnce' => [], |
| 43 | + 'sections' => [], |
| 44 | + 'sectionStack' => [], |
| 45 | + 'pushes' => [], |
| 46 | + 'prepends' => [], |
| 47 | + 'pushStack' => [], |
| 48 | + 'componentStack' => [], |
| 49 | + 'componentData' => [], |
| 50 | + 'currentComponentData' => [], |
| 51 | + 'slots' => [], |
| 52 | + 'slotStack' => [], |
| 53 | + 'fragments' => [], |
| 54 | + 'fragmentStack' => [], |
| 55 | + 'loopsStack' => [], |
| 56 | + 'translationReplacements' => [], |
| 57 | + ]); |
| 58 | + |
| 59 | + $restoreCompiler = $this->freezeObjectProperties($this->blade, [ |
| 60 | + 'cachePath' => $temporaryCachePath, |
| 61 | + 'rawBlocks' => [], |
| 62 | + 'footer' => [], |
| 63 | + 'prepareStringsForCompilationUsing' => [ |
| 64 | + function ($input) { |
| 65 | + if (Unblaze::hasUnblaze($input)) { |
| 66 | + $input = Unblaze::processUnblazeDirectives($input); |
| 67 | + }; |
| 68 | + |
| 69 | + $input = $this->manager->compileForFolding($input, $this->blade->getPath()); |
| 70 | + |
| 71 | + return $input; |
| 72 | + }, |
| 73 | + ], |
| 74 | + 'path' => null, |
| 75 | + 'forElseCounter' => 0, |
| 76 | + 'firstCaseInSwitch' => true, |
| 77 | + 'lastSection' => null, |
| 78 | + 'lastFragment' => null, |
| 79 | + ]); |
| 80 | + |
| 81 | + $restoreRuntime = $this->freezeObjectProperties($this->runtime, [ |
| 82 | + 'compiled' => [], |
| 83 | + 'paths' => [], |
| 84 | + 'compiledPath' => $temporaryCachePath, |
| 85 | + 'dataStack' => [], |
| 86 | + 'slotsStack' => [], |
| 87 | + ]); |
| 88 | + |
| 89 | + try { |
| 90 | + $this->manager->startFolding(); |
| 91 | + |
| 92 | + $result = $this->blade->render($template, deleteCachedView: true); |
| 93 | + } finally { |
| 94 | + $restoreCompiler(); |
| 95 | + $restoreFactory(); |
| 96 | + $restoreRuntime(); |
| 97 | + |
| 98 | + $this->manager->stopFolding(); |
| 99 | + } |
| 100 | + |
| 101 | + $result = Unblaze::replaceUnblazePrecompiledDirectives($result); |
| 102 | + |
| 103 | + return $result; |
| 104 | + } |
| 105 | + |
| 106 | + /** |
| 107 | + * Delete the temporary cache directory created during isolated rendering. |
| 108 | + */ |
| 109 | + public function deleteTemporaryCacheDirectory(): void |
| 110 | + { |
| 111 | + File::deleteDirectory($this->getTemporaryCachePath()); |
| 112 | + } |
| 113 | + |
| 114 | + /** |
| 115 | + * Snapshot object properties and return a restore closure to revert them. |
| 116 | + */ |
| 117 | + protected function freezeObjectProperties(object $object, array $properties) |
| 118 | + { |
| 119 | + $reflection = new ReflectionClass($object); |
| 120 | + |
| 121 | + $frozen = []; |
| 122 | + |
| 123 | + foreach ($properties as $key => $value) { |
| 124 | + $name = is_numeric($key) ? $value : $key; |
| 125 | + |
| 126 | + $property = $reflection->getProperty($name); |
| 127 | + |
| 128 | + $frozen[$name] = $property->getValue($object); |
| 129 | + |
| 130 | + if (! is_numeric($key)) { |
| 131 | + $property->setValue($object, $value); |
| 132 | + } |
| 133 | + } |
| 134 | + |
| 135 | + return function () use ($reflection, $object, $frozen) { |
| 136 | + foreach ($frozen as $name => $value) { |
| 137 | + $property = $reflection->getProperty($name); |
| 138 | + $property->setValue($object, $value); |
| 139 | + } |
| 140 | + }; |
| 141 | + } |
| 142 | +} |
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