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// contributors may be used to endorse or promote products derived from
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//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// Google Mock - a framework for writing C++ mock classes.
//
// This file implements the spec builder syntax (ON_CALL and
// EXPECT_CALL).

#include "gmock/gmock-spec-builders.h"

#include <stdlib.h>

#include <iostream>  // NOLINT
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>

#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "gtest/internal/gtest-port.h"

#if GTEST_OS_CYGWIN || GTEST_OS_LINUX || GTEST_OS_MAC
# include <unistd.h>  // NOLINT
#endif

// Silence C4800 (C4800: 'int *const ': forcing value
// to bool 'true' or 'false') for MSVC 15
#ifdef _MSC_VER
#if _MSC_VER == 1900
#  pragma warning(push)
#  pragma warning(disable:4800)
#endif
#endif

namespace testing {
namespace internal {

// Protects the mock object registry (in class Mock), all function
// mockers, and all expectations.
GTEST_API_ GTEST_DEFINE_STATIC_MUTEX_(g_gmock_mutex);

// Logs a message including file and line number information.
GTEST_API_ void LogWithLocation(testing::internal::LogSeverity severity,
                               const char* file, int line,
                               const std::string& message) {
 ::std::ostringstream s;
 s << internal::FormatFileLocation(file, line) << " " << message
   << ::std::endl;
 Log(severity, s.str(), 0);
}

// Constructs an ExpectationBase object.
ExpectationBase::ExpectationBase(const char* a_file, int a_line,
                                const std::string& a_source_text)
   : file_(a_file),
     line_(a_line),
     source_text_(a_source_text),
     cardinality_specified_(false),
     cardinality_(Exactly(1)),
     call_count_(0),
     retired_(false),
     extra_matcher_specified_(false),
     repeated_action_specified_(false),
     retires_on_saturation_(false),
     last_clause_(kNone),
     action_count_checked_(false) {}

// Destructs an ExpectationBase object.
ExpectationBase::~ExpectationBase() {}

// Explicitly specifies the cardinality of this expectation.  Used by
// the subclasses to implement the .Times() clause.
void ExpectationBase::SpecifyCardinality(const Cardinality& a_cardinality) {
 cardinality_specified_ = true;
 cardinality_ = a_cardinality;
}

// Retires all pre-requisites of this expectation.
void ExpectationBase::RetireAllPreRequisites()
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
 if (is_retired()) {
   // We can take this short-cut as we never retire an expectation
   // until we have retired all its pre-requisites.
   return;
 }

 ::std::vector<ExpectationBase*> expectations(1, this);
 while (!expectations.empty()) {
   ExpectationBase* exp = expectations.back();
   expectations.pop_back();

   for (ExpectationSet::const_iterator it =
            exp->immediate_prerequisites_.begin();
        it != exp->immediate_prerequisites_.end(); ++it) {
     ExpectationBase* next = it->expectation_base().get();
     if (!next->is_retired()) {
       next->Retire();
       expectations.push_back(next);
     }
   }
 }
}

// Returns true if and only if all pre-requisites of this expectation
// have been satisfied.
bool ExpectationBase::AllPrerequisitesAreSatisfied() const
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
 g_gmock_mutex.AssertHeld();
 ::std::vector<const ExpectationBase*> expectations(1, this);
 while (!expectations.empty()) {
   const ExpectationBase* exp = expectations.back();
   expectations.pop_back();

   for (ExpectationSet::const_iterator it =
            exp->immediate_prerequisites_.begin();
        it != exp->immediate_prerequisites_.end(); ++it) {
     const ExpectationBase* next = it->expectation_base().get();
     if (!next->IsSatisfied()) return false;
     expectations.push_back(next);
   }
 }
 return true;
}

// Adds unsatisfied pre-requisites of this expectation to 'result'.
void ExpectationBase::FindUnsatisfiedPrerequisites(ExpectationSet* result) const
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
 g_gmock_mutex.AssertHeld();
 ::std::vector<const ExpectationBase*> expectations(1, this);
 while (!expectations.empty()) {
   const ExpectationBase* exp = expectations.back();
   expectations.pop_back();

   for (ExpectationSet::const_iterator it =
            exp->immediate_prerequisites_.begin();
        it != exp->immediate_prerequisites_.end(); ++it) {
     const ExpectationBase* next = it->expectation_base().get();

     if (next->IsSatisfied()) {
       // If *it is satisfied and has a call count of 0, some of its
       // pre-requisites may not be satisfied yet.
       if (next->call_count_ == 0) {
         expectations.push_back(next);
       }
     } else {
       // Now that we know next is unsatisfied, we are not so interested
       // in whether its pre-requisites are satisfied.  Therefore we
       // don't iterate into it here.
       *result += *it;
     }
   }
 }
}

// Describes how many times a function call matching this
// expectation has occurred.
void ExpectationBase::DescribeCallCountTo(::std::ostream* os) const
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
 g_gmock_mutex.AssertHeld();

 // Describes how many times the function is expected to be called.
 *os << "         Expected: to be ";
 cardinality().DescribeTo(os);
 *os << "\n           Actual: ";
 Cardinality::DescribeActualCallCountTo(call_count(), os);

 // Describes the state of the expectation (e.g. is it satisfied?
 // is it active?).
 *os << " - " << (IsOverSaturated() ? "over-saturated" :
                  IsSaturated() ? "saturated" :
                  IsSatisfied() ? "satisfied" : "unsatisfied")
     << " and "
     << (is_retired() ? "retired" : "active");
}

// Checks the action count (i.e. the number of WillOnce() and
// WillRepeatedly() clauses) against the cardinality if this hasn't
// been done before.  Prints a warning if there are too many or too
// few actions.
void ExpectationBase::CheckActionCountIfNotDone() const
   GTEST_LOCK_EXCLUDED_(mutex_) {
 bool should_check = false;
 {
   MutexLock l(&mutex_);
   if (!action_count_checked_) {
     action_count_checked_ = true;
     should_check = true;
   }
 }

 if (should_check) {
   if (!cardinality_specified_) {
     // The cardinality was inferred - no need to check the action
     // count against it.
     return;
   }

   // The cardinality was explicitly specified.
   const int action_count = static_cast<int>(untyped_actions_.size());
   const int upper_bound = cardinality().ConservativeUpperBound();
   const int lower_bound = cardinality().ConservativeLowerBound();
   bool too_many;  // True if there are too many actions, or false
   // if there are too few.
   if (action_count > upper_bound ||
       (action_count == upper_bound && repeated_action_specified_)) {
     too_many = true;
   } else if (0 < action_count && action_count < lower_bound &&
              !repeated_action_specified_) {
     too_many = false;
   } else {
     return;
   }

   ::std::stringstream ss;
   DescribeLocationTo(&ss);
   ss << "Too " << (too_many ? "many" : "few")
      << " actions specified in " << source_text() << "...\n"
      << "Expected to be ";
   cardinality().DescribeTo(&ss);
   ss << ", but has " << (too_many ? "" : "only ")
      << action_count << " WillOnce()"
      << (action_count == 1 ? "" : "s");
   if (repeated_action_specified_) {
     ss << " and a WillRepeatedly()";
   }
   ss << ".";
   Log(kWarning, ss.str(), -1);  // -1 means "don't print stack trace".
 }
}

// Implements the .Times() clause.
void ExpectationBase::UntypedTimes(const Cardinality& a_cardinality) {
 if (last_clause_ == kTimes) {
   ExpectSpecProperty(false,
                      ".Times() cannot appear "
                      "more than once in an EXPECT_CALL().");
 } else {
   ExpectSpecProperty(
       last_clause_ < kTimes,
       ".Times() may only appear *before* .InSequence(), .WillOnce(), "
       ".WillRepeatedly(), or .RetiresOnSaturation(), not after.");
 }
 last_clause_ = kTimes;

 SpecifyCardinality(a_cardinality);
}

// Points to the implicit sequence introduced by a living InSequence
// object (if any) in the current thread or NULL.
GTEST_API_ ThreadLocal<Sequence*> g_gmock_implicit_sequence;

// Reports an uninteresting call (whose description is in msg) in the
// manner specified by 'reaction'.
void ReportUninterestingCall(CallReaction reaction, const std::string& msg) {
 // Include a stack trace only if --gmock_verbose=info is specified.
 const int stack_frames_to_skip =
     GMOCK_FLAG_GET(verbose) == kInfoVerbosity ? 3 : -1;
 switch (reaction) {
   case kAllow:
     Log(kInfo, msg, stack_frames_to_skip);
     break;
   case kWarn:
     Log(kWarning,
         msg +
             "\nNOTE: You can safely ignore the above warning unless this "
             "call should not happen.  Do not suppress it by blindly adding "
             "an EXPECT_CALL() if you don't mean to enforce the call.  "
             "See "
             "https://github.com/google/googletest/blob/master/docs/"
             "gmock_cook_book.md#"
             "knowing-when-to-expect for details.\n",
         stack_frames_to_skip);
     break;
   default:  // FAIL
     Expect(false, nullptr, -1, msg);
 }
}

UntypedFunctionMockerBase::UntypedFunctionMockerBase()
   : mock_obj_(nullptr), name_("") {}

UntypedFunctionMockerBase::~UntypedFunctionMockerBase() {}

// Sets the mock object this mock method belongs to, and registers
// this information in the global mock registry.  Will be called
// whenever an EXPECT_CALL() or ON_CALL() is executed on this mock
// method.
void UntypedFunctionMockerBase::RegisterOwner(const void* mock_obj)
   GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
 {
   MutexLock l(&g_gmock_mutex);
   mock_obj_ = mock_obj;
 }
 Mock::Register(mock_obj, this);
}

// Sets the mock object this mock method belongs to, and sets the name
// of the mock function.  Will be called upon each invocation of this
// mock function.
void UntypedFunctionMockerBase::SetOwnerAndName(const void* mock_obj,
                                               const char* name)
   GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
 // We protect name_ under g_gmock_mutex in case this mock function
 // is called from two threads concurrently.
 MutexLock l(&g_gmock_mutex);
 mock_obj_ = mock_obj;
 name_ = name;
}

// Returns the name of the function being mocked.  Must be called
// after RegisterOwner() or SetOwnerAndName() has been called.
const void* UntypedFunctionMockerBase::MockObject() const
   GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
 const void* mock_obj;
 {
   // We protect mock_obj_ under g_gmock_mutex in case this mock
   // function is called from two threads concurrently.
   MutexLock l(&g_gmock_mutex);
   Assert(mock_obj_ != nullptr, __FILE__, __LINE__,
          "MockObject() must not be called before RegisterOwner() or "
          "SetOwnerAndName() has been called.");
   mock_obj = mock_obj_;
 }
 return mock_obj;
}

// Returns the name of this mock method.  Must be called after
// SetOwnerAndName() has been called.
const char* UntypedFunctionMockerBase::Name() const
   GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
 const char* name;
 {
   // We protect name_ under g_gmock_mutex in case this mock
   // function is called from two threads concurrently.
   MutexLock l(&g_gmock_mutex);
   Assert(name_ != nullptr, __FILE__, __LINE__,
          "Name() must not be called before SetOwnerAndName() has "
          "been called.");
   name = name_;
 }
 return name;
}

// Calculates the result of invoking this mock function with the given
// arguments, prints it, and returns it.  The caller is responsible
// for deleting the result.
UntypedActionResultHolderBase* UntypedFunctionMockerBase::UntypedInvokeWith(
   void* const untyped_args) GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
 // See the definition of untyped_expectations_ for why access to it
 // is unprotected here.
 if (untyped_expectations_.size() == 0) {
   // No expectation is set on this mock method - we have an
   // uninteresting call.

   // We must get Google Mock's reaction on uninteresting calls
   // made on this mock object BEFORE performing the action,
   // because the action may DELETE the mock object and make the
   // following expression meaningless.
   const CallReaction reaction =
       Mock::GetReactionOnUninterestingCalls(MockObject());

   // True if and only if we need to print this call's arguments and return
   // value.  This definition must be kept in sync with
   // the behavior of ReportUninterestingCall().
   const bool need_to_report_uninteresting_call =
       // If the user allows this uninteresting call, we print it
       // only when they want informational messages.
       reaction == kAllow ? LogIsVisible(kInfo) :
                          // If the user wants this to be a warning, we print
                          // it only when they want to see warnings.
           reaction == kWarn
               ? LogIsVisible(kWarning)
               :
               // Otherwise, the user wants this to be an error, and we
               // should always print detailed information in the error.
               true;

   if (!need_to_report_uninteresting_call) {
     // Perform the action without printing the call information.
     return this->UntypedPerformDefaultAction(
         untyped_args, "Function call: " + std::string(Name()));
   }

   // Warns about the uninteresting call.
   ::std::stringstream ss;
   this->UntypedDescribeUninterestingCall(untyped_args, &ss);

   // Calculates the function result.
   UntypedActionResultHolderBase* const result =
       this->UntypedPerformDefaultAction(untyped_args, ss.str());

   // Prints the function result.
   if (result != nullptr) result->PrintAsActionResult(&ss);

   ReportUninterestingCall(reaction, ss.str());
   return result;
 }

 bool is_excessive = false;
 ::std::stringstream ss;
 ::std::stringstream why;
 ::std::stringstream loc;
 const void* untyped_action = nullptr;

 // The UntypedFindMatchingExpectation() function acquires and
 // releases g_gmock_mutex.

 const ExpectationBase* const untyped_expectation =
     this->UntypedFindMatchingExpectation(untyped_args, &untyped_action,
                                          &is_excessive, &ss, &why);
 const bool found = untyped_expectation != nullptr;

 // True if and only if we need to print the call's arguments
 // and return value.
 // This definition must be kept in sync with the uses of Expect()
 // and Log() in this function.
 const bool need_to_report_call =
     !found || is_excessive || LogIsVisible(kInfo);
 if (!need_to_report_call) {
   // Perform the action without printing the call information.
   return untyped_action == nullptr
              ? this->UntypedPerformDefaultAction(untyped_args, "")
              : this->UntypedPerformAction(untyped_action, untyped_args);
 }

 ss << "    Function call: " << Name();
 this->UntypedPrintArgs(untyped_args, &ss);

 // In case the action deletes a piece of the expectation, we
 // generate the message beforehand.
 if (found && !is_excessive) {
   untyped_expectation->DescribeLocationTo(&loc);
 }

 UntypedActionResultHolderBase* result = nullptr;

 auto perform_action = [&] {
   return untyped_action == nullptr
              ? this->UntypedPerformDefaultAction(untyped_args, ss.str())
              : this->UntypedPerformAction(untyped_action, untyped_args);
 };
 auto handle_failures = [&] {
   ss << "\n" << why.str();

   if (!found) {
     // No expectation matches this call - reports a failure.
     Expect(false, nullptr, -1, ss.str());
   } else if (is_excessive) {
     // We had an upper-bound violation and the failure message is in ss.
     Expect(false, untyped_expectation->file(), untyped_expectation->line(),
            ss.str());
   } else {
     // We had an expected call and the matching expectation is
     // described in ss.
     Log(kInfo, loc.str() + ss.str(), 2);
   }
 };
#if GTEST_HAS_EXCEPTIONS
 try {
   result = perform_action();
 } catch (...) {
   handle_failures();
   throw;
 }
#else
 result = perform_action();
#endif

 if (result != nullptr) result->PrintAsActionResult(&ss);
 handle_failures();
 return result;
}

// Returns an Expectation object that references and co-owns exp,
// which must be an expectation on this mock function.
Expectation UntypedFunctionMockerBase::GetHandleOf(ExpectationBase* exp) {
 // See the definition of untyped_expectations_ for why access to it
 // is unprotected here.
 for (UntypedExpectations::const_iterator it =
          untyped_expectations_.begin();
      it != untyped_expectations_.end(); ++it) {
   if (it->get() == exp) {
     return Expectation(*it);
   }
 }

 Assert(false, __FILE__, __LINE__, "Cannot find expectation.");
 return Expectation();
 // The above statement is just to make the code compile, and will
 // 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;
}

CallReaction intToCallReaction(int mock_behavior) {
 if (mock_behavior >= kAllow && mock_behavior <= kFail) {
   return static_cast<internal::CallReaction>(mock_behavior);
 }
 return kWarn;
}

}  // 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(nullptr), 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_suite;
 ::std::string first_used_test;
 bool leakable;  // true if and only if 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() {
   if (!GMOCK_FLAG_GET(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;

     // FIXME: 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_suite << "."
                 << 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. Expectations on a mock object are "
                  "verified when the object is destructed. Leaking a mock "
                  "means that its expectations aren't verified, which is "
                  "usually a test bug. If you really intend to leak a mock, "
                  "you can suppress this error using "
                  "testing::Mock::AllowLeak(mock_object), or you may use a "
                  "fake or stub instead of a mock.\n";
     std::cout.flush();
     ::std::cerr.flush();
     // RUN_ALL_TESTS() has already returned when this destructor is
     // called.  Therefore we cannot use the normal Google Test
     // failure reporting mechanism.
     _exit(1);  // We cannot call exit() as it is not reentrant and
                // may already have been called.
   }
 }

 StateMap& states() { return states_; }

private:
 StateMap states_;
};

// Protected by g_gmock_mutex.
MockObjectRegistry g_mock_object_registry;

// Maps a mock object to the reaction Google Mock should have when an
// uninteresting method is called.  Protected by g_gmock_mutex.
std::map<const void*, internal::CallReaction> g_uninteresting_call_reaction;

// Sets the reaction Google Mock should have when an uninteresting
// method of the given mock object is called.
void SetReactionOnUninterestingCalls(const void* mock_obj,
                                    internal::CallReaction reaction)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 g_uninteresting_call_reaction[mock_obj] = reaction;
}

}  // namespace

// Tells Google Mock to allow uninteresting calls on the given mock
// object.
void Mock::AllowUninterestingCalls(const void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 SetReactionOnUninterestingCalls(mock_obj, internal::kAllow);
}

// Tells Google Mock to warn the user about uninteresting calls on the
// given mock object.
void Mock::WarnUninterestingCalls(const void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 SetReactionOnUninterestingCalls(mock_obj, internal::kWarn);
}

// Tells Google Mock to fail uninteresting calls on the given mock
// object.
void Mock::FailUninterestingCalls(const void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 SetReactionOnUninterestingCalls(mock_obj, internal::kFail);
}

// Tells Google Mock the given mock object is being destroyed and its
// entry in the call-reaction table should be removed.
void Mock::UnregisterCallReaction(const void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 g_uninteresting_call_reaction.erase(mock_obj);
}

// Returns the reaction Google Mock will have on uninteresting calls
// made on the given mock object.
internal::CallReaction Mock::GetReactionOnUninterestingCalls(
   const void* mock_obj)
       GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 return (g_uninteresting_call_reaction.count(mock_obj) == 0)
            ? internal::intToCallReaction(
                  GMOCK_FLAG_GET(default_mock_behavior))
            : g_uninteresting_call_reaction[mock_obj];
}

// Tells Google Mock to ignore mock_obj when checking for leaked mock
// objects.
void Mock::AllowLeak(const void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 g_mock_object_registry.states()[mock_obj].leakable = true;
}

// Verifies and clears all expectations on the given mock object.  If
// the expectations aren't satisfied, generates one or more Google
// Test non-fatal failures and returns false.
bool Mock::VerifyAndClearExpectations(void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 return VerifyAndClearExpectationsLocked(mock_obj);
}

// Verifies all expectations on the given mock object and clears its
// default actions and expectations.  Returns true if and only if the
// verification was successful.
bool Mock::VerifyAndClear(void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 ClearDefaultActionsLocked(mock_obj);
 return VerifyAndClearExpectationsLocked(mock_obj);
}

// Verifies and clears all expectations on the given mock object.  If
// the expectations aren't satisfied, generates one or more Google
// Test non-fatal failures and returns false.
bool Mock::VerifyAndClearExpectationsLocked(void* mock_obj)
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex) {
 internal::g_gmock_mutex.AssertHeld();
 if (g_mock_object_registry.states().count(mock_obj) == 0) {
   // No EXPECT_CALL() was set on the given mock object.
   return true;
 }

 // Verifies and clears the expectations on each mock method in the
 // given mock object.
 bool expectations_met = true;
 FunctionMockers& mockers =
     g_mock_object_registry.states()[mock_obj].function_mockers;
 for (FunctionMockers::const_iterator it = mockers.begin();
      it != mockers.end(); ++it) {
   if (!(*it)->VerifyAndClearExpectationsLocked()) {
     expectations_met = false;
   }
 }

 // We don't clear the content of mockers, as they may still be
 // needed by ClearDefaultActionsLocked().
 return expectations_met;
}

bool Mock::IsNaggy(void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kWarn;
}
bool Mock::IsNice(void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kAllow;
}
bool Mock::IsStrict(void* mock_obj)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 return Mock::GetReactionOnUninterestingCalls(mock_obj) == internal::kFail;
}

// Registers a mock object and a mock method it owns.
void Mock::Register(const void* mock_obj,
                   internal::UntypedFunctionMockerBase* mocker)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 g_mock_object_registry.states()[mock_obj].function_mockers.insert(mocker);
}

// Tells Google Mock where in the source code mock_obj is used in an
// ON_CALL or EXPECT_CALL.  In case mock_obj is leaked, this
// information helps the user identify which object it is.
void Mock::RegisterUseByOnCallOrExpectCall(const void* mock_obj,
                                          const char* file, int line)
   GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex) {
 internal::MutexLock l(&internal::g_gmock_mutex);
 MockObjectState& state = g_mock_object_registry.states()[mock_obj];
 if (state.first_used_file == nullptr) {
   state.first_used_file = file;
   state.first_used_line = line;
   const TestInfo* const test_info =
       UnitTest::GetInstance()->current_test_info();
   if (test_info != nullptr) {
     state.first_used_test_suite = test_info->test_suite_name();
     state.first_used_test = test_info->name();
   }
 }
}

// Unregisters a mock method; removes the owning mock object from the
// registry when the last mock method associated with it has been
// unregistered.  This is called only in the destructor of
// FunctionMockerBase.
void Mock::UnregisterLocked(internal::UntypedFunctionMockerBase* mocker)
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex) {
 internal::g_gmock_mutex.AssertHeld();
 for (MockObjectRegistry::StateMap::iterator it =
          g_mock_object_registry.states().begin();
      it != g_mock_object_registry.states().end(); ++it) {
   FunctionMockers& mockers = it->second.function_mockers;
   if (mockers.erase(mocker) > 0) {
     // mocker was in mockers and has been just removed.
     if (mockers.empty()) {
       g_mock_object_registry.states().erase(it);
     }
     return;
   }
 }
}

// Clears all ON_CALL()s set on the given mock object.
void Mock::ClearDefaultActionsLocked(void* mock_obj)
   GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex) {
 internal::g_gmock_mutex.AssertHeld();

 if (g_mock_object_registry.states().count(mock_obj) == 0) {
   // No ON_CALL() was set on the given mock object.
   return;
 }

 // Clears the default actions for each mock method in the given mock
 // object.
 FunctionMockers& mockers =
     g_mock_object_registry.states()[mock_obj].function_mockers;
 for (FunctionMockers::const_iterator it = mockers.begin();
      it != mockers.end(); ++it) {
   (*it)->ClearDefaultActionsLocked();
 }

 // We don't clear the content of mockers, as they may still be
 // needed by VerifyAndClearExpectationsLocked().
}

Expectation::Expectation() {}

Expectation::Expectation(
   const std::shared_ptr<internal::ExpectationBase>& an_expectation_base)
   : expectation_base_(an_expectation_base) {}

Expectation::~Expectation() {}

// Adds an expectation to a sequence.
void Sequence::AddExpectation(const Expectation& expectation) const {
 if (*last_expectation_ != expectation) {
   if (last_expectation_->expectation_base() != nullptr) {
     expectation.expectation_base()->immediate_prerequisites_
         += *last_expectation_;
   }
   *last_expectation_ = expectation;
 }
}

// Creates the implicit sequence if there isn't one.
InSequence::InSequence() {
 if (internal::g_gmock_implicit_sequence.get() == nullptr) {
   internal::g_gmock_implicit_sequence.set(new Sequence);
   sequence_created_ = true;
 } else {
   sequence_created_ = false;
 }
}

// Deletes the implicit sequence if it was created by the constructor
// of this object.
InSequence::~InSequence() {
 if (sequence_created_) {
   delete internal::g_gmock_implicit_sequence.get();
   internal::g_gmock_implicit_sequence.set(nullptr);
 }
}

}  // namespace testing

#ifdef _MSC_VER
#if _MSC_VER == 1900
#  pragma warning(pop)
#endif
#endif

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