63     protected function doEnterNode(Node $node, Environment $env)  argument
66             $this->enterOptimizeFor($node, $env);
69         return $node;
72     protected function doLeaveNode(Node $node, Environment $env)  argument
75             $this->leaveOptimizeFor($node, $env);
79             $node = $this->optimizeRawFilter($node, $env);
82         $node = $this->optimizePrintNode($node, $env);
84         return $node;
94     private function optimizePrintNode(Node $node, Environment $env): Node  argument
96         if (!$node instanceof PrintNode) {
97             return $node;
100         $exprNode = $node->getNode('expr');
110         return $node;
116     private function optimizeRawFilter(Node $node, Environment $env): Node  argument
118 …if ($node instanceof FilterExpression && 'raw' == $node->getNode('filter')->getAttribute('value'))…
119             return $node->getNode('node');
122         return $node;
128     private function enterOptimizeFor(Node $node, Environment $env)  argument
130         if ($node instanceof ForNode) {
132             $node->setAttribute('with_loop', false);
133             array_unshift($this->loops, $node);
134 …          array_unshift($this->loopsTargets, $node->getNode('value_target')->getAttribute('name'));
135             array_unshift($this->loopsTargets, $node->getNode('key_target')->getAttribute('name'));
144         elseif ($node instanceof NameExpression && 'loop' === $node->getAttribute('name')) {
145             $node->setAttribute('always_defined', true);
150 …elseif ($node instanceof NameExpression && \in_array($node->getAttribute('name'), $this->loopsTarg…
151             $node->setAttribute('always_defined', true);
155         elseif ($node instanceof BlockReferenceNode || $node instanceof BlockReferenceExpression) {
160         elseif ($node instanceof IncludeNode && !$node->getAttribute('only')) {
165         elseif ($node instanceof FunctionExpression
166             && 'include' === $node->getAttribute('name')
167             && (!$node->getNode('arguments')->hasNode('with_context')
168 …           || false !== $node->getNode('arguments')->getNode('with_context')->getAttribute('value')
175         elseif ($node instanceof GetAttrExpression
176             && (!$node->getNode('attribute') instanceof ConstantExpression
177                 || 'parent' === $node->getNode('attribute')->getAttribute('value')
180                 || ($node->getNode('node') instanceof NameExpression
181                     && 'loop' === $node->getNode('node')->getAttribute('name')
192     private function leaveOptimizeFor(Node $node, Environment $env)  argument
194         if ($node instanceof ForNode) {