added an exception when misusing macro calls (refs #922)

diff --git a/lib/Twig/ExpressionParser.php b/lib/Twig/ExpressionParser.php
index 6a555e1..dc49c49 100644 (file)
--- a/lib/Twig/ExpressionParser.php
+++ b/lib/Twig/ExpressionParser.php
@@ -393,6 +393,10 @@ class Twig_ExpressionParser
         }
 
         if ($node instanceof Twig_Node_Expression_Name && null !== $alias = $this->parser->getImportedSymbol('template', $node->getAttribute('name'))) {
+            if (!$arg instanceof Twig_Node_Expression_Constant) {
+                throw new Twig_Error_Syntax(sprintf('Dynamic macro names are not supported (called on "%s")', $node->getAttribute('name')), $token->getLine(), $this->parser->getFilename());
+            }
+
             $node = new Twig_Node_Expression_MethodCall($node, 'get'.$arg->getAttribute('value'), $arguments, $lineno);
             $node->setAttribute('safe', true);