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  // never be executed.
}

// Verifies that all expectations on this mock function have been
// satisfied.  Reports one or more Google Test non-fatal failures
// and returns false if not.
bool UntypedFunctionMockerBase::VerifyAndClearExpectationsLocked()
    GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
  g_gmock_mutex.AssertHeld();
  bool expectations_met = true;
  for (UntypedExpectations::const_iterator it =
           untyped_expectations_.begin();
       it != untyped_expectations_.end(); ++it) {
    ExpectationBase* const untyped_expectation = it->get();
    if (untyped_expectation->IsOverSaturated()) {
      // There was an upper-bound violation.  Since the error was
      // already reported when it occurred, there is no need to do
      // anything here.
      expectations_met = false;
    } else if (!untyped_expectation->IsSatisfied()) {
      expectations_met = false;
      ::std::stringstream ss;
      ss  << "Actual function call count doesn't match "
          << untyped_expectation->source_text() << "...\n";
      // No need to show the source file location of the expectation
      // in the description, as the Expect() call that follows already
      // takes care of it.
      untyped_expectation->MaybeDescribeExtraMatcherTo(&ss);
      untyped_expectation->DescribeCallCountTo(&ss);
      Expect(false, untyped_expectation->file(),
             untyped_expectation->line(), ss.str());
    }
  }

  // Deleting our expectations may trigger other mock objects to be deleted, for
  // example if an action contains a reference counted smart pointer to that
  // mock object, and that is the last reference. So if we delete our
  // expectations within the context of the global mutex we may deadlock when
  // this method is called again. Instead, make a copy of the set of
  // expectations to delete, clear our set within the mutex, and then clear the
  // copied set outside of it.
  UntypedExpectations expectations_to_delete;
  untyped_expectations_.swap(expectations_to_delete);

  g_gmock_mutex.Unlock();
  expectations_to_delete.clear();
  g_gmock_mutex.Lock();

  return expectations_met;
}

}  // namespace internal

// Class Mock.

namespace {

typedef std::set<internal::UntypedFunctionMockerBase*> FunctionMockers;

// The current state of a mock object.  Such information is needed for
// detecting leaked mock objects and explicitly verifying a mock's
// expectations.
struct MockObjectState {
  MockObjectState()
      : first_used_file(NULL), first_used_line(-1), leakable(false) {}

  // Where in the source file an ON_CALL or EXPECT_CALL is first
  // invoked on this mock object.
  const char* first_used_file;
  int first_used_line;
  ::std::string first_used_test_case;
  ::std::string first_used_test;
  bool leakable;  // true iff it's OK to leak the object.
  FunctionMockers function_mockers;  // All registered methods of the object.
};

// A global registry holding the state of all mock objects that are
// alive.  A mock object is added to this registry the first time
// Mock::AllowLeak(), ON_CALL(), or EXPECT_CALL() is called on it.  It
// is removed from the registry in the mock object's destructor.
class MockObjectRegistry {
 public:
  // Maps a mock object (identified by its address) to its state.
  typedef std::map<const void*, MockObjectState> StateMap;

  // This destructor will be called when a program exits, after all
  // tests in it have been run.  By then, there should be no mock
  // object alive.  Therefore we report any living object as test
  // failure, unless the user explicitly asked us to ignore it.
  ~MockObjectRegistry() {
    // "using ::std::cout;" doesn't work with Symbian's STLport, where cout is
    // a macro.

    if (!GMOCK_FLAG(catch_leaked_mocks))
      return;

    int leaked_count = 0;
    for (StateMap::const_iterator it = states_.begin(); it != states_.end();
         ++it) {
      if (it->second.leakable)  // The user said it's fine to leak this object.
        continue;

      // TODO(wan@google.com): Print the type of the leaked object.
      // This can help the user identify the leaked object.
      std::cout << "\n";
      const MockObjectState& state = it->second;
      std::cout << internal::FormatFileLocation(state.first_used_file,
                                                state.first_used_line);
      std::cout << " ERROR: this mock object";
      if (state.first_used_test != "") {
        std::cout << " (used in test " << state.first_used_test_case << "."
             << state.first_used_test << ")";
      }
      std::cout << " should be deleted but never is. Its address is @"
           << it->first << ".";
      leaked_count++;
    }
    if (leaked_count > 0) {
      std::cout << "\nERROR: " << leaked_count
           << " leaked mock " << (leaked_count == 1 ? "object" : "objects")
           << " found at program exit.\n";