Fix #65 consecutive interpolations

split: e04da2db91dd4eb9b08396831a3e02cd880e0424

Author: kylekatarnls

Parser/State.php

@@ -462,13 +462,23 @@ public function nextToken()
      *
      * @see \Generator->current
      *
-     * @return array the token array (always _one_ token, as an array)
+     * @return TokenInterface|null
      */
     public function getToken()
     {
         return $this->tokens->current();
     }
 
+    /**
+     * Return the token parsed just before the current one (->getToken()).
+     *
+     * @return TokenInterface|null
+     */
+    public function getPreviousToken()
+    {
+        return $this->parser->getLexer()->getPreviousToken();
+    }
+
     public function is(Node $node, array $classNames)
     {
         foreach ($classNames as $className) {

Parser/TokenHandler/InterpolationStartTokenHandler.php

@@ -24,7 +24,8 @@ public function handleToken(TokenInterface $token, State $state)
         }
 
         $node = $state->getCurrentNode();
-        if (!$node) {
+
+        if (!$node && !($state->getPreviousToken() instanceof InterpolationEndToken)) {
             /** @var ElementNode $element */
             $element = $state->createNode(ElementNode::class, $token);
             $state->setCurrentNode($element);
@@ -48,13 +49,15 @@ public function handleToken(TokenInterface $token, State $state)
 
             return;
         }
+
         if ($state->currentNodeIs([
             TextNode::class,
             CodeNode::class,
             ExpressionNode::class,
         ])) {
             $node = $node->getParent();
         }
+
         $state->getInterpolationStack()->attach($token->getEnd(), (object) [
             'currentNode' => $node,
             'parentNode'  => $state->getParentNode(),