childiterator.cpp

   1 // Copyright 2005 Ben Hutchings <ben@decadentplace.org.uk>.
   2 // See the file "COPYING" for licence details.
   3
   4 #include "childiterator.hpp"
   5
   6 #include <cassert>
   7
   8 #include "xpcom_support.hpp"
   9
  10 using xpcom_support::check;
  11
  12 ChildIterator::ChildIterator()
  13         : node_(0)
  14 {}
  15
  16 ChildIterator::ChildIterator(nsIDOMNode * node)
  17 {
  18     check(node->GetFirstChild(&node_));
  19 }
  20
  21 ChildIterator::~ChildIterator()
  22 {
  23     if (node_)
  24         node_->Release();
  25 }
  26
  27 already_AddRefed<nsIDOMNode> ChildIterator::operator*() const
  28 {
  29     assert(node_);
  30     node_->AddRef();
  31     return node_;
  32 }
  33
  34 ChildIterator & ChildIterator::operator++()
  35 {
  36     nsIDOMNode * next;
  37     check(node_->GetNextSibling(&next));
  38     node_->Release();
  39     node_ = next;
  40     return *this;
  41 }
  42
  43 bool ChildIterator::operator==(const ChildIterator & other) const
  44 {
  45     return node_ == other.node_;
  46 }