Hashing is not necessary to generate unique variable names during compilation

src/Parser.php

@@ -56,7 +56,7 @@ class Parser
 
     public function getVarName()
     {
-        return sprintf('__internal_%s', hash('sha256', __METHOD__.$this->stream->getSourceContext()->getCode().$this->varNameSalt++));
+        return sprintf('__internal_parse_%d', $this->varNameSalt++);
     }
 
     public function parse(TokenStream $stream, $test = null, $dropNeedle = false)