comparison vendor/nikic/php-parser/doc/2_Usage_of_basic_components.markdown @ 17:129ea1e6d783

Update, including to Drupal core 8.6.10

 
 All four methods can either return the changed node or not return at all (i.e. `null`) in which
 case the current node is not changed.
 
 The `enterNode()` method can additionally return the value `NodeTraverser::DONT_TRAVERSE_CHILDREN`,
-which instructs the traverser to skip all children of the current node.
+which instructs the traverser to skip all children of the current node. To furthermore prevent subsequent
+visitors from visiting the current node, `NodeTraverser::DONT_TRAVERSE_CURRENT_AND_CHILDREN` can be used instead.
 
 The `leaveNode()` method can additionally return the value `NodeTraverser::REMOVE_NODE`, in which
 case the current node will be removed from the parent array. Furthermore it is possible to return
 an array of nodes, which will be merged into the parent array at the offset of the current node.
 I.e. if in `array(A, B, C)` the node `B` should be replaced with `array(X, Y, Z)` the result will