public void addChild ( AstNode kid ) { assertNotNull ( kid ) ; int end = kid . getPosition ( ) + kid . getLength ( ) ; setLength ( end - this . getPosition ( ) ) ; addChildToBack ( kid ) ; kid . setParent ( this ) ; }
Adds a child or function to the end of the block . Sets the parent of the child to this node and fixes up the start position of the child to be relative to this node . Sets the length of this node to include the new child .