bool MatchAndExplain()

in ext/gtest-1.8.0/googlemock/include/gmock/gmock-matchers.h [2547:2597]
44 lines of code
10 McCabe index (conditional complexity)

  bool MatchAndExplain(const LhsContainer& lhs,
                       MatchResultListener* listener) const {
    // GTEST_REMOVE_CONST_() is needed to work around an MSVC 8.0 bug
    // that causes LhsContainer to be a const type sometimes.
    typedef internal::StlContainerView<GTEST_REMOVE_CONST_(LhsContainer)>
        LhsView;
    typedef typename LhsView::type LhsStlContainer;
    StlContainerReference lhs_stl_container = LhsView::ConstReference(lhs);
    if (lhs_stl_container == expected_)
      return true;

    ::std::ostream* const os = listener->stream();
    if (os != NULL) {
      // Something is different. Check for extra values first.
      bool printed_header = false;
      for (typename LhsStlContainer::const_iterator it =
               lhs_stl_container.begin();
           it != lhs_stl_container.end(); ++it) {
        if (internal::ArrayAwareFind(expected_.begin(), expected_.end(), *it) ==
            expected_.end()) {
          if (printed_header) {
            *os << ", ";
          } else {
            *os << "which has these unexpected elements: ";
            printed_header = true;
          }
          UniversalPrint(*it, os);
        }
      }

      // Now check for missing values.
      bool printed_header2 = false;
      for (typename StlContainer::const_iterator it = expected_.begin();
           it != expected_.end(); ++it) {
        if (internal::ArrayAwareFind(
                lhs_stl_container.begin(), lhs_stl_container.end(), *it) ==
            lhs_stl_container.end()) {
          if (printed_header2) {
            *os << ", ";
          } else {
            *os << (printed_header ? ",\nand" : "which")
                << " doesn't have these expected elements: ";
            printed_header2 = true;
          }
          UniversalPrint(*it, os);
        }
      }
    }

    return false;
  }