// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


// 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"

#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 << 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() cannot appear after "
                                   ".InSequence(), .WillOnce(), .WillRepeatedly(), "
                                   "or .RetiresOnSaturation().");
            }
            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(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/googlemock/"
                        "docs/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 *const result =
                    untyped_action == nullptr
                    ? this->UntypedPerformDefaultAction(untyped_args, ss.str())
                    : this->UntypedPerformAction(untyped_action, untyped_args);
            if (result != nullptr) result->PrintAsActionResult(&ss);
            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);
            }

            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(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 is "
                                 "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(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
