CacheMacro: wrapped in try ... finally

Author: dg

src/Bridges/CacheLatte/CacheMacro.php

@@ -60,7 +60,7 @@ public function nodeOpened(Latte\MacroNode $node)
 		$node->empty = false;
 		$node->openingCode = Latte\PhpWriter::using($node)
 			->write(
-				'<?php if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, %var, $this->global->cacheStack, %node.array?)) { ?>',
+				'<?php if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, %var, $this->global->cacheStack, %node.array?)) try { ?>',
 				Nette\Utils\Random::generate()
 			);
 	}
@@ -73,7 +73,11 @@ public function nodeOpened(Latte\MacroNode $node)
 	public function nodeClosed(Latte\MacroNode $node)
 	{
 		$node->closingCode = Latte\PhpWriter::using($node)
-			->write('<?php Nette\Bridges\CacheLatte\CacheMacro::endCache($this->global->cacheStack, %node.array?); } ?>');
+			->write('<?php
+				Nette\Bridges\CacheLatte\CacheMacro::endCache($this->global->cacheStack, %node.array?);
+				} catch (\Throwable $__e) {
+					Nette\Bridges\CacheLatte\CacheMacro::rollback($this->global->cacheStack); throw $__e;
+				} ?>');
 	}
 
 
@@ -140,4 +144,16 @@ public static function endCache(array &$parents, array $args = null): void
 		$helper->dependencies[Cache::EXPIRATION] = $args['expiration'] ?? '+ 7 days';
 		$helper->end();
 	}
+
+
+	/**
+	 * @param  Nette\Caching\OutputHelper[]  $parents
+	 */
+	public static function rollback(array &$parents): void
+	{
+		$helper = array_pop($parents);
+		if ($helper instanceof Nette\Caching\OutputHelper) {
+			$helper->rollback();
+		}
+	}
 }

tests/Bridges.Latte/expected/CacheMacro.cache.inc.phtml

@@ -1,9 +1,13 @@
 <?php
 %A%
-		if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, '%[\w]+%', $this->global->cacheStack)) {
+		if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, '%[\w]+%', $this->global->cacheStack)) try {
 			echo '	';
 			echo LR\Filters::escapeHtmlText(($this->filters->lower)($title)) /* line 4 */;
 			echo "\n";
 			Nette\Bridges\CacheLatte\CacheMacro::endCache($this->global->cacheStack);
 		}
+		catch (\Throwable $__e) {
+			Nette\Bridges\CacheLatte\CacheMacro::rollback($this->global->cacheStack);
+			throw $__e;
+		}
 %A%

tests/Bridges.Latte/expected/CacheMacro.cache.phtml

@@ -3,7 +3,7 @@
 		echo 'Noncached content
 
 ';
-		if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, '%[\w]+%', $this->global->cacheStack, [$id, 'tags' => 'mytag'])) {
+		if (Nette\Bridges\CacheLatte\CacheMacro::createCache($this->global->cacheStorage, '%[\w]+%', $this->global->cacheStack, [$id, 'tags' => 'mytag'])) try {
 			echo '
 <h1>';
 			echo LR\Filters::escapeHtmlText(($this->filters->upper)($title)) /* line 5 */;
@@ -15,6 +15,10 @@
 			echo "\n";
 			Nette\Bridges\CacheLatte\CacheMacro::endCache($this->global->cacheStack, [$id, 'tags' => 'mytag']);
 		}
+		catch (\Throwable $__e) {
+			Nette\Bridges\CacheLatte\CacheMacro::rollback($this->global->cacheStack);
+			throw $__e;
+		}
 %A%
 	}