SnippetNode, SnippetAreaNode: name can be class constant [Closes nette/latte#346]

Author: dg

src/Bridges/ApplicationLatte/Nodes/SnippetAreaNode.php

@@ -11,6 +11,8 @@
 
 use Latte\Compiler\Block;
 use Latte\Compiler\Nodes\AreaNode;
+use Latte\Compiler\Nodes\Php;
+use Latte\Compiler\Nodes\Php\Expression;
 use Latte\Compiler\Nodes\Php\Scalar;
 use Latte\Compiler\Nodes\StatementNode;
 use Latte\Compiler\PrintContext;
@@ -34,6 +36,13 @@ public static function create(Tag $tag, TemplateParser $parser): \Generator
 	{
 		$node = new static;
 		$name = $tag->parser->parseUnquotedStringOrExpression();
+		if (
+			$name instanceof Expression\ClassConstantFetchNode
+			&& $name->class instanceof Php\NameNode
+			&& $name->name instanceof Php\IdentifierNode
+		) {
+			$name = new Scalar\StringNode(constant($name->class . '::' . $name->name), $name->position);
+		}
 		$node->block = new Block($name, Template::LayerSnippet, $tag);
 		$parser->checkBlockIsUnique($node->block);
 		[$node->content, $endTag] = yield;

src/Bridges/ApplicationLatte/Nodes/SnippetNode.php

@@ -14,8 +14,8 @@
 use Latte\Compiler\Nodes\AreaNode;
 use Latte\Compiler\Nodes\AuxiliaryNode;
 use Latte\Compiler\Nodes\Html\ElementNode;
-use Latte\Compiler\Nodes\Php\Expression\AssignNode;
-use Latte\Compiler\Nodes\Php\Expression\VariableNode;
+use Latte\Compiler\Nodes\Php;
+use Latte\Compiler\Nodes\Php\Expression;
 use Latte\Compiler\Nodes\Php\Scalar;
 use Latte\Compiler\Nodes\StatementNode;
 use Latte\Compiler\PrintContext;
@@ -49,6 +49,13 @@ public static function create(Tag $tag, TemplateParser $parser): \Generator
 			$node->block = new Block(new Scalar\StringNode(''), Template::LayerSnippet, $tag);
 		} else {
 			$name = $tag->parser->parseUnquotedStringOrExpression();
+			if (
+				$name instanceof Expression\ClassConstantFetchNode
+				&& $name->class instanceof Php\NameNode
+				&& $name->name instanceof Php\IdentifierNode
+			) {
+				$name = new Scalar\StringNode(constant($name->class . '::' . $name->name), $name->position);
+			}
 			$node->block = new Block($name, Template::LayerSnippet, $tag);
 			if (!$node->block->isDynamic()) {
 				$parser->checkBlockIsUnique($node->block);
@@ -148,7 +155,7 @@ private function printAttribute(PrintContext $context): string
 				XX,
 			self::$snippetAttribute,
 			$this->block->isDynamic()
-				? new AssignNode(new VariableNode('ʟ_nm'), $this->block->name)
+				? new Expression\AssignNode(new Expression\VariableNode('ʟ_nm'), $this->block->name)
 				: $this->block->name,
 		);
 	}

tests/Bridges.Latte3/expected/n-snippet.php

@@ -3,7 +3,7 @@
 final class Template%a% extends Latte\Runtime\Template
 {
 	public const Blocks = [
-		'snippet' => ['outer' => 'blockOuter', 'gallery' => 'blockGallery', 'script' => 'blockScript'],
+		'snippet' => ['outer' => 'blockOuter', 'gallery' => 'blockGallery', 'script' => 'blockScript', 'hello' => 'blockHello'],
 	];
 
 
@@ -29,6 +29,12 @@ public function main(array $ʟ_args): void
 		echo '>';
 		$this->renderBlock('script', [], null, 'snippet') /* line %d% */;
 		echo '</script>
+
+	<script';
+		echo ' id="', htmlspecialchars($this->global->snippetDriver->getHtmlId('hello')), '"';
+		echo '>';
+		$this->renderBlock('hello', [], null, 'snippet') /* line 9 */;
+		echo '</script>
 ';
 	}
 
@@ -76,10 +82,27 @@ public function blockScript(array $ʟ_args): void
 
 		$this->global->snippetDriver->enter('script', 'static') /* line %d% */;
 		try {
-			echo LR\Filters::escapeJs('x') /* line 7 */;
+			echo LR\Filters::escapeJs('x') /* line %d% */;
+
+		} finally {
+			$this->global->snippetDriver->leave();
+		}
+	}
+
+
+	/** n:snippet="Test::Foo" on line %d% */
+	public function blockHello(array $ʟ_args): void
+	{
+		extract($this->params);
+		extract($ʟ_args);
+		unset($ʟ_args);
+
+		$this->global->snippetDriver->enter('hello', 'static') /* line %d% */;
+		try {
+			echo LR\Filters::escapeJs('y') /* line %d% */;
 
 		} finally {
 			$this->global->snippetDriver->leave();
 		}
 	}
-}
+}

tests/Bridges.Latte3/n-snippet.phpt

@@ -12,6 +12,11 @@ if (version_compare(Latte\Engine::VERSION, '3', '<')) {
 	Tester\Environment::skip('Test for Latte 3');
 }
 
+class Test
+{
+	public const Foo = 'hello';
+}
+
 
 $latte = new Latte\Engine;
 $latte->setLoader(new Latte\Loaders\StringLoader);
@@ -26,6 +31,8 @@ $template = <<<'EOD'
 
 		<script n:snippet="script">{='x'}</script>
 
+		<script n:snippet="Test::Foo">{='y'}</script>
+
 	EOD;
 
 Assert::matchFile(