This file is indexed.

/usr/include/gmock/gmock-spec-builders.h is in google-mock 1.6.0+svn437-0ubuntu5.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
// 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,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: wan@google.com (Zhanyong Wan)

// Google Mock - a framework for writing C++ mock classes.
//
// This file implements the ON_CALL() and EXPECT_CALL() macros.
//
// A user can use the ON_CALL() macro to specify the default action of
// a mock method.  The syntax is:
//
//   ON_CALL(mock_object, Method(argument-matchers))
//       .With(multi-argument-matcher)
//       .WillByDefault(action);
//
//  where the .With() clause is optional.
//
// A user can use the EXPECT_CALL() macro to specify an expectation on
// a mock method.  The syntax is:
//
//   EXPECT_CALL(mock_object, Method(argument-matchers))
//       .With(multi-argument-matchers)
//       .Times(cardinality)
//       .InSequence(sequences)
//       .After(expectations)
//       .WillOnce(action)
//       .WillRepeatedly(action)
//       .RetiresOnSaturation();
//
// where all clauses are optional, and .InSequence()/.After()/
// .WillOnce() can appear any number of times.

#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_

#include <map>
#include <set>
#include <sstream>
#include <string>
#include <vector>

#if GTEST_HAS_EXCEPTIONS
# include <stdexcept>  // NOLINT
#endif

#include "gmock/gmock-actions.h"
#include "gmock/gmock-cardinalities.h"
#include "gmock/gmock-matchers.h"
#include "gmock/internal/gmock-internal-utils.h"
#include "gmock/internal/gmock-port.h"
#include "gtest/gtest.h"

namespace testing {

// An abstract handle of an expectation.
class Expectation;

// A set of expectation handles.
class ExpectationSet;

// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
// and MUST NOT BE USED IN USER CODE!!!
namespace internal {

// Implements a mock function.
template <typename F> class FunctionMocker;

// Base class for expectations.
class ExpectationBase;

// Implements an expectation.
template <typename F> class TypedExpectation;

// Helper class for testing the Expectation class template.
class ExpectationTester;

// Base class for function mockers.
template <typename F> class FunctionMockerBase;

// Protects the mock object registry (in class Mock), all function
// mockers, and all expectations.
//
// The reason we don't use more fine-grained protection is: when a
// mock function Foo() is called, it needs to consult its expectations
// to see which one should be picked.  If another thread is allowed to
// call a mock function (either Foo() or a different one) at the same
// time, it could affect the "retired" attributes of Foo()'s
// expectations when InSequence() is used, and thus affect which
// expectation gets picked.  Therefore, we sequence all mock function
// calls to ensure the integrity of the mock objects' states.
GTEST_API_ GTEST_DECLARE_STATIC_MUTEX_(g_gmock_mutex);

// Untyped base class for ActionResultHolder<R>.
class UntypedActionResultHolderBase;

// Abstract base class of FunctionMockerBase.  This is the
// type-agnostic part of the function mocker interface.  Its pure
// virtual methods are implemented by FunctionMockerBase.
class GTEST_API_ UntypedFunctionMockerBase {
 public:
  UntypedFunctionMockerBase();
  virtual ~UntypedFunctionMockerBase();

  // 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 VerifyAndClearExpectationsLocked()
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);

  // Clears the ON_CALL()s set on this mock function.
  virtual void ClearDefaultActionsLocked()
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) = 0;

  // In all of the following Untyped* functions, it's the caller's
  // responsibility to guarantee the correctness of the arguments'
  // types.

  // Performs the default action with the given arguments and returns
  // the action's result.  The call description string will be used in
  // the error message to describe the call in the case the default
  // action fails.
  // L = *
  virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction(
      const void* untyped_args,
      const string& call_description) const = 0;

  // Performs the given action with the given arguments and returns
  // the action's result.
  // L = *
  virtual UntypedActionResultHolderBase* UntypedPerformAction(
      const void* untyped_action,
      const void* untyped_args) const = 0;

  // Writes a message that the call is uninteresting (i.e. neither
  // explicitly expected nor explicitly unexpected) to the given
  // ostream.
  virtual void UntypedDescribeUninterestingCall(
      const void* untyped_args,
      ::std::ostream* os) const
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) = 0;

  // Returns the expectation that matches the given function arguments
  // (or NULL is there's no match); when a match is found,
  // untyped_action is set to point to the action that should be
  // performed (or NULL if the action is "do default"), and
  // is_excessive is modified to indicate whether the call exceeds the
  // expected number.
  virtual const ExpectationBase* UntypedFindMatchingExpectation(
      const void* untyped_args,
      const void** untyped_action, bool* is_excessive,
      ::std::ostream* what, ::std::ostream* why)
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) = 0;

  // Prints the given function arguments to the ostream.
  virtual void UntypedPrintArgs(const void* untyped_args,
                                ::std::ostream* os) const = 0;

  // 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.
  // TODO(wan@google.com): rename to SetAndRegisterOwner().
  void RegisterOwner(const void* mock_obj)
      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);

  // 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 SetOwnerAndName(const void* mock_obj, const char* name)
      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);

  // Returns the mock object this mock method belongs to.  Must be
  // called after RegisterOwner() or SetOwnerAndName() has been
  // called.
  const void* MockObject() const
      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);

  // Returns the name of this mock method.  Must be called after
  // SetOwnerAndName() has been called.
  const char* Name() const
      GTEST_LOCK_EXCLUDED_(g_gmock_mutex);

  // Returns the result of invoking this mock function with the given
  // arguments.  This function can be safely called from multiple
  // threads concurrently.  The caller is responsible for deleting the
  // result.
  const UntypedActionResultHolderBase* UntypedInvokeWith(
      const void* untyped_args)
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex);

 protected:
  typedef std::vector<const void*> UntypedOnCallSpecs;

  typedef std::vector<internal::linked_ptr<ExpectationBase> >
  UntypedExpectations;

  // Returns an Expectation object that references and co-owns exp,
  // which must be an expectation on this mock function.
  Expectation GetHandleOf(ExpectationBase* exp);

  // Address of the mock object this mock method belongs to.  Only
  // valid after this mock method has been called or
  // ON_CALL/EXPECT_CALL has been invoked on it.
  const void* mock_obj_;  // Protected by g_gmock_mutex.

  // Name of the function being mocked.  Only valid after this mock
  // method has been called.
  const char* name_;  // Protected by g_gmock_mutex.

  // All default action specs for this function mocker.
  UntypedOnCallSpecs untyped_on_call_specs_;

  // All expectations for this function mocker.
  UntypedExpectations untyped_expectations_;
};  // class UntypedFunctionMockerBase

// Untyped base class for OnCallSpec<F>.
class UntypedOnCallSpecBase {
 public:
  // The arguments are the location of the ON_CALL() statement.
  UntypedOnCallSpecBase(const char* a_file, int a_line)
      : file_(a_file), line_(a_line), last_clause_(kNone) {}

  // Where in the source file was the default action spec defined?
  const char* file() const { return file_; }
  int line() const { return line_; }

 protected:
  // Gives each clause in the ON_CALL() statement a name.
  enum Clause {
    // Do not change the order of the enum members!  The run-time
    // syntax checking relies on it.
    kNone,
    kWith,
    kWillByDefault
  };

  // Asserts that the ON_CALL() statement has a certain property.
  void AssertSpecProperty(bool property, const string& failure_message) const {
    Assert(property, file_, line_, failure_message);
  }

  // Expects that the ON_CALL() statement has a certain property.
  void ExpectSpecProperty(bool property, const string& failure_message) const {
    Expect(property, file_, line_, failure_message);
  }

  const char* file_;
  int line_;

  // The last clause in the ON_CALL() statement as seen so far.
  // Initially kNone and changes as the statement is parsed.
  Clause last_clause_;
};  // class UntypedOnCallSpecBase

// This template class implements an ON_CALL spec.
template <typename F>
class OnCallSpec : public UntypedOnCallSpecBase {
 public:
  typedef typename Function<F>::ArgumentTuple ArgumentTuple;
  typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;

  // Constructs an OnCallSpec object from the information inside
  // the parenthesis of an ON_CALL() statement.
  OnCallSpec(const char* a_file, int a_line,
             const ArgumentMatcherTuple& matchers)
      : UntypedOnCallSpecBase(a_file, a_line),
        matchers_(matchers),
        // By default, extra_matcher_ should match anything.  However,
        // we cannot initialize it with _ as that triggers a compiler
        // bug in Symbian's C++ compiler (cannot decide between two
        // overloaded constructors of Matcher<const ArgumentTuple&>).
        extra_matcher_(A<const ArgumentTuple&>()) {
  }

  // Implements the .With() clause.
  OnCallSpec& With(const Matcher<const ArgumentTuple&>& m) {
    // Makes sure this is called at most once.
    ExpectSpecProperty(last_clause_ < kWith,
                       ".With() cannot appear "
                       "more than once in an ON_CALL().");
    last_clause_ = kWith;

    extra_matcher_ = m;
    return *this;
  }

  // Implements the .WillByDefault() clause.
  OnCallSpec& WillByDefault(const Action<F>& action) {
    ExpectSpecProperty(last_clause_ < kWillByDefault,
                       ".WillByDefault() must appear "
                       "exactly once in an ON_CALL().");
    last_clause_ = kWillByDefault;

    ExpectSpecProperty(!action.IsDoDefault(),
                       "DoDefault() cannot be used in ON_CALL().");
    action_ = action;
    return *this;
  }

  // Returns true iff the given arguments match the matchers.
  bool Matches(const ArgumentTuple& args) const {
    return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
  }

  // Returns the action specified by the user.
  const Action<F>& GetAction() const {
    AssertSpecProperty(last_clause_ == kWillByDefault,
                       ".WillByDefault() must appear exactly "
                       "once in an ON_CALL().");
    return action_;
  }

 private:
  // The information in statement
  //
  //   ON_CALL(mock_object, Method(matchers))
  //       .With(multi-argument-matcher)
  //       .WillByDefault(action);
  //
  // is recorded in the data members like this:
  //
  //   source file that contains the statement => file_
  //   line number of the statement            => line_
  //   matchers                                => matchers_
  //   multi-argument-matcher                  => extra_matcher_
  //   action                                  => action_
  ArgumentMatcherTuple matchers_;
  Matcher<const ArgumentTuple&> extra_matcher_;
  Action<F> action_;
};  // class OnCallSpec

// Possible reactions on uninteresting calls.
enum CallReaction {
  kAllow,
  kWarn,
  kFail,
  kDefault = kWarn  // By default, warn about uninteresting calls.
};

}  // namespace internal

// Utilities for manipulating mock objects.
class GTEST_API_ Mock {
 public:
  // The following public methods can be called concurrently.

  // Tells Google Mock to ignore mock_obj when checking for leaked
  // mock objects.
  static void AllowLeak(const void* mock_obj)
      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);

  // 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.
  static bool VerifyAndClearExpectations(void* mock_obj)
      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);

  // Verifies all expectations on the given mock object and clears its
  // default actions and expectations.  Returns true iff the
  // verification was successful.
  static bool VerifyAndClear(void* mock_obj)
      GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);

 private:
  friend class internal::UntypedFunctionMockerBase;

  // Needed for a function mocker to register itself (so that we know
  // how to clear a mock object).
  template <typename F>
  friend class internal::FunctionMockerBase;

  template <typename M>
  friend class NiceMock;

  template <typename M>
  friend class NaggyMock;

  template <typename M>
  friend class StrictMock;

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

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

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

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

  // Returns the reaction Google Mock will have on uninteresting calls
  // made on the given mock object.
  static internal::CallReaction GetReactionOnUninterestingCalls(
      const void* mock_obj)
          GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);

  // Verifies that all expectations on the given mock object have been
  // satisfied.  Reports one or more Google Test non-fatal failures
  // and returns false if not.
  static bool VerifyAndClearExpectationsLocked(void* mock_obj)
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex);

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

  // Registers a mock object and a mock method it owns.
  static void Register(
      const void* mock_obj,
      internal::UntypedFunctionMockerBase* mocker)
          GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);

  // 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.
  static void RegisterUseByOnCallOrExpectCall(
      const void* mock_obj, const char* file, int line)
          GTEST_LOCK_EXCLUDED_(internal::g_gmock_mutex);

  // 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.
  static void UnregisterLocked(internal::UntypedFunctionMockerBase* mocker)
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(internal::g_gmock_mutex);
};  // class Mock

// An abstract handle of an expectation.  Useful in the .After()
// clause of EXPECT_CALL() for setting the (partial) order of
// expectations.  The syntax:
//
//   Expectation e1 = EXPECT_CALL(...)...;
//   EXPECT_CALL(...).After(e1)...;
//
// sets two expectations where the latter can only be matched after
// the former has been satisfied.
//
// Notes:
//   - This class is copyable and has value semantics.
//   - Constness is shallow: a const Expectation object itself cannot
//     be modified, but the mutable methods of the ExpectationBase
//     object it references can be called via expectation_base().
//   - The constructors and destructor are defined out-of-line because
//     the Symbian WINSCW compiler wants to otherwise instantiate them
//     when it sees this class definition, at which point it doesn't have
//     ExpectationBase available yet, leading to incorrect destruction
//     in the linked_ptr (or compilation errors if using a checking
//     linked_ptr).
class GTEST_API_ Expectation {
 public:
  // Constructs a null object that doesn't reference any expectation.
  Expectation();

  ~Expectation();

  // This single-argument ctor must not be explicit, in order to support the
  //   Expectation e = EXPECT_CALL(...);
  // syntax.
  //
  // A TypedExpectation object stores its pre-requisites as
  // Expectation objects, and needs to call the non-const Retire()
  // method on the ExpectationBase objects they reference.  Therefore
  // Expectation must receive a *non-const* reference to the
  // ExpectationBase object.
  Expectation(internal::ExpectationBase& exp);  // NOLINT

  // The compiler-generated copy ctor and operator= work exactly as
  // intended, so we don't need to define our own.

  // Returns true iff rhs references the same expectation as this object does.
  bool operator==(const Expectation& rhs) const {
    return expectation_base_ == rhs.expectation_base_;
  }

  bool operator!=(const Expectation& rhs) const { return !(*this == rhs); }

 private:
  friend class ExpectationSet;
  friend class Sequence;
  friend class ::testing::internal::ExpectationBase;
  friend class ::testing::internal::UntypedFunctionMockerBase;

  template <typename F>
  friend class ::testing::internal::FunctionMockerBase;

  template <typename F>
  friend class ::testing::internal::TypedExpectation;

  // This comparator is needed for putting Expectation objects into a set.
  class Less {
   public:
    bool operator()(const Expectation& lhs, const Expectation& rhs) const {
      return lhs.expectation_base_.get() < rhs.expectation_base_.get();
    }
  };

  typedef ::std::set<Expectation, Less> Set;

  Expectation(
      const internal::linked_ptr<internal::ExpectationBase>& expectation_base);

  // Returns the expectation this object references.
  const internal::linked_ptr<internal::ExpectationBase>&
  expectation_base() const {
    return expectation_base_;
  }

  // A linked_ptr that co-owns the expectation this handle references.
  internal::linked_ptr<internal::ExpectationBase> expectation_base_;
};

// A set of expectation handles.  Useful in the .After() clause of
// EXPECT_CALL() for setting the (partial) order of expectations.  The
// syntax:
//
//   ExpectationSet es;
//   es += EXPECT_CALL(...)...;
//   es += EXPECT_CALL(...)...;
//   EXPECT_CALL(...).After(es)...;
//
// sets three expectations where the last one can only be matched
// after the first two have both been satisfied.
//
// This class is copyable and has value semantics.
class ExpectationSet {
 public:
  // A bidirectional iterator that can read a const element in the set.
  typedef Expectation::Set::const_iterator const_iterator;

  // An object stored in the set.  This is an alias of Expectation.
  typedef Expectation::Set::value_type value_type;

  // Constructs an empty set.
  ExpectationSet() {}

  // This single-argument ctor must not be explicit, in order to support the
  //   ExpectationSet es = EXPECT_CALL(...);
  // syntax.
  ExpectationSet(internal::ExpectationBase& exp) {  // NOLINT
    *this += Expectation(exp);
  }

  // This single-argument ctor implements implicit conversion from
  // Expectation and thus must not be explicit.  This allows either an
  // Expectation or an ExpectationSet to be used in .After().
  ExpectationSet(const Expectation& e) {  // NOLINT
    *this += e;
  }

  // The compiler-generator ctor and operator= works exactly as
  // intended, so we don't need to define our own.

  // Returns true iff rhs contains the same set of Expectation objects
  // as this does.
  bool operator==(const ExpectationSet& rhs) const {
    return expectations_ == rhs.expectations_;
  }

  bool operator!=(const ExpectationSet& rhs) const { return !(*this == rhs); }

  // Implements the syntax
  //   expectation_set += EXPECT_CALL(...);
  ExpectationSet& operator+=(const Expectation& e) {
    expectations_.insert(e);
    return *this;
  }

  int size() const { return static_cast<int>(expectations_.size()); }

  const_iterator begin() const { return expectations_.begin(); }
  const_iterator end() const { return expectations_.end(); }

 private:
  Expectation::Set expectations_;
};


// Sequence objects are used by a user to specify the relative order
// in which the expectations should match.  They are copyable (we rely
// on the compiler-defined copy constructor and assignment operator).
class GTEST_API_ Sequence {
 public:
  // Constructs an empty sequence.
  Sequence() : last_expectation_(new Expectation) {}

  // Adds an expectation to this sequence.  The caller must ensure
  // that no other thread is accessing this Sequence object.
  void AddExpectation(const Expectation& expectation) const;

 private:
  // The last expectation in this sequence.  We use a linked_ptr here
  // because Sequence objects are copyable and we want the copies to
  // be aliases.  The linked_ptr allows the copies to co-own and share
  // the same Expectation object.
  internal::linked_ptr<Expectation> last_expectation_;
};  // class Sequence

// An object of this type causes all EXPECT_CALL() statements
// encountered in its scope to be put in an anonymous sequence.  The
// work is done in the constructor and destructor.  You should only
// create an InSequence object on the stack.
//
// The sole purpose for this class is to support easy definition of
// sequential expectations, e.g.
//
//   {
//     InSequence dummy;  // The name of the object doesn't matter.
//
//     // The following expectations must match in the order they appear.
//     EXPECT_CALL(a, Bar())...;
//     EXPECT_CALL(a, Baz())...;
//     ...
//     EXPECT_CALL(b, Xyz())...;
//   }
//
// You can create InSequence objects in multiple threads, as long as
// they are used to affect different mock objects.  The idea is that
// each thread can create and set up its own mocks as if it's the only
// thread.  However, for clarity of your tests we recommend you to set
// up mocks in the main thread unless you have a good reason not to do
// so.
class GTEST_API_ InSequence {
 public:
  InSequence();
  ~InSequence();
 private:
  bool sequence_created_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(InSequence);  // NOLINT
} GTEST_ATTRIBUTE_UNUSED_;

namespace internal {

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

// Base class for implementing expectations.
//
// There are two reasons for having a type-agnostic base class for
// Expectation:
//
//   1. We need to store collections of expectations of different
//   types (e.g. all pre-requisites of a particular expectation, all
//   expectations in a sequence).  Therefore these expectation objects
//   must share a common base class.
//
//   2. We can avoid binary code bloat by moving methods not depending
//   on the template argument of Expectation to the base class.
//
// This class is internal and mustn't be used by user code directly.
class GTEST_API_ ExpectationBase {
 public:
  // source_text is the EXPECT_CALL(...) source that created this Expectation.
  ExpectationBase(const char* file, int line, const string& source_text);

  virtual ~ExpectationBase();

  // Where in the source file was the expectation spec defined?
  const char* file() const { return file_; }
  int line() const { return line_; }
  const char* source_text() const { return source_text_.c_str(); }
  // Returns the cardinality specified in the expectation spec.
  const Cardinality& cardinality() const { return cardinality_; }

  // Describes the source file location of this expectation.
  void DescribeLocationTo(::std::ostream* os) const {
    *os << FormatFileLocation(file(), line()) << " ";
  }

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

  // If this mock method has an extra matcher (i.e. .With(matcher)),
  // describes it to the ostream.
  virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) = 0;

 protected:
  friend class ::testing::Expectation;
  friend class UntypedFunctionMockerBase;

  enum Clause {
    // Don't change the order of the enum members!
    kNone,
    kWith,
    kTimes,
    kInSequence,
    kAfter,
    kWillOnce,
    kWillRepeatedly,
    kRetiresOnSaturation
  };

  typedef std::vector<const void*> UntypedActions;

  // Returns an Expectation object that references and co-owns this
  // expectation.
  virtual Expectation GetHandle() = 0;

  // Asserts that the EXPECT_CALL() statement has the given property.
  void AssertSpecProperty(bool property, const string& failure_message) const {
    Assert(property, file_, line_, failure_message);
  }

  // Expects that the EXPECT_CALL() statement has the given property.
  void ExpectSpecProperty(bool property, const string& failure_message) const {
    Expect(property, file_, line_, failure_message);
  }

  // Explicitly specifies the cardinality of this expectation.  Used
  // by the subclasses to implement the .Times() clause.
  void SpecifyCardinality(const Cardinality& cardinality);

  // Returns true iff the user specified the cardinality explicitly
  // using a .Times().
  bool cardinality_specified() const { return cardinality_specified_; }

  // Sets the cardinality of this expectation spec.
  void set_cardinality(const Cardinality& a_cardinality) {
    cardinality_ = a_cardinality;
  }

  // The following group of methods should only be called after the
  // EXPECT_CALL() statement, and only when g_gmock_mutex is held by
  // the current thread.

  // Retires all pre-requisites of this expectation.
  void RetireAllPreRequisites()
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);

  // Returns true iff this expectation is retired.
  bool is_retired() const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    return retired_;
  }

  // Retires this expectation.
  void Retire()
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    retired_ = true;
  }

  // Returns true iff this expectation is satisfied.
  bool IsSatisfied() const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    return cardinality().IsSatisfiedByCallCount(call_count_);
  }

  // Returns true iff this expectation is saturated.
  bool IsSaturated() const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    return cardinality().IsSaturatedByCallCount(call_count_);
  }

  // Returns true iff this expectation is over-saturated.
  bool IsOverSaturated() const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    return cardinality().IsOverSaturatedByCallCount(call_count_);
  }

  // Returns true iff all pre-requisites of this expectation are satisfied.
  bool AllPrerequisitesAreSatisfied() const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);

  // Adds unsatisfied pre-requisites of this expectation to 'result'.
  void FindUnsatisfiedPrerequisites(ExpectationSet* result) const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex);

  // Returns the number this expectation has been invoked.
  int call_count() const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    return call_count_;
  }

  // Increments the number this expectation has been invoked.
  void IncrementCallCount()
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    call_count_++;
  }

  // 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 CheckActionCountIfNotDone() const
      GTEST_LOCK_EXCLUDED_(mutex_);

  friend class ::testing::Sequence;
  friend class ::testing::internal::ExpectationTester;

  template <typename Function>
  friend class TypedExpectation;

  // Implements the .Times() clause.
  void UntypedTimes(const Cardinality& a_cardinality);

  // This group of fields are part of the spec and won't change after
  // an EXPECT_CALL() statement finishes.
  const char* file_;          // The file that contains the expectation.
  int line_;                  // The line number of the expectation.
  const string source_text_;  // The EXPECT_CALL(...) source text.
  // True iff the cardinality is specified explicitly.
  bool cardinality_specified_;
  Cardinality cardinality_;            // The cardinality of the expectation.
  // The immediate pre-requisites (i.e. expectations that must be
  // satisfied before this expectation can be matched) of this
  // expectation.  We use linked_ptr in the set because we want an
  // Expectation object to be co-owned by its FunctionMocker and its
  // successors.  This allows multiple mock objects to be deleted at
  // different times.
  ExpectationSet immediate_prerequisites_;

  // This group of fields are the current state of the expectation,
  // and can change as the mock function is called.
  int call_count_;  // How many times this expectation has been invoked.
  bool retired_;    // True iff this expectation has retired.
  UntypedActions untyped_actions_;
  bool extra_matcher_specified_;
  bool repeated_action_specified_;  // True if a WillRepeatedly() was specified.
  bool retires_on_saturation_;
  Clause last_clause_;
  mutable bool action_count_checked_;  // Under mutex_.
  mutable Mutex mutex_;  // Protects action_count_checked_.

  GTEST_DISALLOW_ASSIGN_(ExpectationBase);
};  // class ExpectationBase

// Impements an expectation for the given function type.
template <typename F>
class TypedExpectation : public ExpectationBase {
 public:
  typedef typename Function<F>::ArgumentTuple ArgumentTuple;
  typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
  typedef typename Function<F>::Result Result;

  TypedExpectation(FunctionMockerBase<F>* owner,
                   const char* a_file, int a_line, const string& a_source_text,
                   const ArgumentMatcherTuple& m)
      : ExpectationBase(a_file, a_line, a_source_text),
        owner_(owner),
        matchers_(m),
        // By default, extra_matcher_ should match anything.  However,
        // we cannot initialize it with _ as that triggers a compiler
        // bug in Symbian's C++ compiler (cannot decide between two
        // overloaded constructors of Matcher<const ArgumentTuple&>).
        extra_matcher_(A<const ArgumentTuple&>()),
        repeated_action_(DoDefault()) {}

  virtual ~TypedExpectation() {
    // Check the validity of the action count if it hasn't been done
    // yet (for example, if the expectation was never used).
    CheckActionCountIfNotDone();
    for (UntypedActions::const_iterator it = untyped_actions_.begin();
         it != untyped_actions_.end(); ++it) {
      delete static_cast<const Action<F>*>(*it);
    }
  }

  // Implements the .With() clause.
  TypedExpectation& With(const Matcher<const ArgumentTuple&>& m) {
    if (last_clause_ == kWith) {
      ExpectSpecProperty(false,
                         ".With() cannot appear "
                         "more than once in an EXPECT_CALL().");
    } else {
      ExpectSpecProperty(last_clause_ < kWith,
                         ".With() must be the first "
                         "clause in an EXPECT_CALL().");
    }
    last_clause_ = kWith;

    extra_matcher_ = m;
    extra_matcher_specified_ = true;
    return *this;
  }

  // Implements the .Times() clause.
  TypedExpectation& Times(const Cardinality& a_cardinality) {
    ExpectationBase::UntypedTimes(a_cardinality);
    return *this;
  }

  // Implements the .Times() clause.
  TypedExpectation& Times(int n) {
    return Times(Exactly(n));
  }

  // Implements the .InSequence() clause.
  TypedExpectation& InSequence(const Sequence& s) {
    ExpectSpecProperty(last_clause_ <= kInSequence,
                       ".InSequence() cannot appear after .After(),"
                       " .WillOnce(), .WillRepeatedly(), or "
                       ".RetiresOnSaturation().");
    last_clause_ = kInSequence;

    s.AddExpectation(GetHandle());
    return *this;
  }
  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2) {
    return InSequence(s1).InSequence(s2);
  }
  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2,
                               const Sequence& s3) {
    return InSequence(s1, s2).InSequence(s3);
  }
  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2,
                               const Sequence& s3, const Sequence& s4) {
    return InSequence(s1, s2, s3).InSequence(s4);
  }
  TypedExpectation& InSequence(const Sequence& s1, const Sequence& s2,
                               const Sequence& s3, const Sequence& s4,
                               const Sequence& s5) {
    return InSequence(s1, s2, s3, s4).InSequence(s5);
  }

  // Implements that .After() clause.
  TypedExpectation& After(const ExpectationSet& s) {
    ExpectSpecProperty(last_clause_ <= kAfter,
                       ".After() cannot appear after .WillOnce(),"
                       " .WillRepeatedly(), or "
                       ".RetiresOnSaturation().");
    last_clause_ = kAfter;

    for (ExpectationSet::const_iterator it = s.begin(); it != s.end(); ++it) {
      immediate_prerequisites_ += *it;
    }
    return *this;
  }
  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2) {
    return After(s1).After(s2);
  }
  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2,
                          const ExpectationSet& s3) {
    return After(s1, s2).After(s3);
  }
  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2,
                          const ExpectationSet& s3, const ExpectationSet& s4) {
    return After(s1, s2, s3).After(s4);
  }
  TypedExpectation& After(const ExpectationSet& s1, const ExpectationSet& s2,
                          const ExpectationSet& s3, const ExpectationSet& s4,
                          const ExpectationSet& s5) {
    return After(s1, s2, s3, s4).After(s5);
  }

  // Implements the .WillOnce() clause.
  TypedExpectation& WillOnce(const Action<F>& action) {
    ExpectSpecProperty(last_clause_ <= kWillOnce,
                       ".WillOnce() cannot appear after "
                       ".WillRepeatedly() or .RetiresOnSaturation().");
    last_clause_ = kWillOnce;

    untyped_actions_.push_back(new Action<F>(action));
    if (!cardinality_specified()) {
      set_cardinality(Exactly(static_cast<int>(untyped_actions_.size())));
    }
    return *this;
  }

  // Implements the .WillRepeatedly() clause.
  TypedExpectation& WillRepeatedly(const Action<F>& action) {
    if (last_clause_ == kWillRepeatedly) {
      ExpectSpecProperty(false,
                         ".WillRepeatedly() cannot appear "
                         "more than once in an EXPECT_CALL().");
    } else {
      ExpectSpecProperty(last_clause_ < kWillRepeatedly,
                         ".WillRepeatedly() cannot appear "
                         "after .RetiresOnSaturation().");
    }
    last_clause_ = kWillRepeatedly;
    repeated_action_specified_ = true;

    repeated_action_ = action;
    if (!cardinality_specified()) {
      set_cardinality(AtLeast(static_cast<int>(untyped_actions_.size())));
    }

    // Now that no more action clauses can be specified, we check
    // whether their count makes sense.
    CheckActionCountIfNotDone();
    return *this;
  }

  // Implements the .RetiresOnSaturation() clause.
  TypedExpectation& RetiresOnSaturation() {
    ExpectSpecProperty(last_clause_ < kRetiresOnSaturation,
                       ".RetiresOnSaturation() cannot appear "
                       "more than once.");
    last_clause_ = kRetiresOnSaturation;
    retires_on_saturation_ = true;

    // Now that no more action clauses can be specified, we check
    // whether their count makes sense.
    CheckActionCountIfNotDone();
    return *this;
  }

  // Returns the matchers for the arguments as specified inside the
  // EXPECT_CALL() macro.
  const ArgumentMatcherTuple& matchers() const {
    return matchers_;
  }

  // Returns the matcher specified by the .With() clause.
  const Matcher<const ArgumentTuple&>& extra_matcher() const {
    return extra_matcher_;
  }

  // Returns the action specified by the .WillRepeatedly() clause.
  const Action<F>& repeated_action() const { return repeated_action_; }

  // If this mock method has an extra matcher (i.e. .With(matcher)),
  // describes it to the ostream.
  virtual void MaybeDescribeExtraMatcherTo(::std::ostream* os) {
    if (extra_matcher_specified_) {
      *os << "    Expected args: ";
      extra_matcher_.DescribeTo(os);
      *os << "\n";
    }
  }

 private:
  template <typename Function>
  friend class FunctionMockerBase;

  // Returns an Expectation object that references and co-owns this
  // expectation.
  virtual Expectation GetHandle() {
    return owner_->GetHandleOf(this);
  }

  // The following methods will be called only after the EXPECT_CALL()
  // statement finishes and when the current thread holds
  // g_gmock_mutex.

  // Returns true iff this expectation matches the given arguments.
  bool Matches(const ArgumentTuple& args) const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
  }

  // Returns true iff this expectation should handle the given arguments.
  bool ShouldHandleArguments(const ArgumentTuple& args) const
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();

    // In case the action count wasn't checked when the expectation
    // was defined (e.g. if this expectation has no WillRepeatedly()
    // or RetiresOnSaturation() clause), we check it when the
    // expectation is used for the first time.
    CheckActionCountIfNotDone();
    return !is_retired() && AllPrerequisitesAreSatisfied() && Matches(args);
  }

  // Describes the result of matching the arguments against this
  // expectation to the given ostream.
  void ExplainMatchResultTo(
      const ArgumentTuple& args,
      ::std::ostream* os) const
          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();

    if (is_retired()) {
      *os << "         Expected: the expectation is active\n"
          << "           Actual: it is retired\n";
    } else if (!Matches(args)) {
      if (!TupleMatches(matchers_, args)) {
        ExplainMatchFailureTupleTo(matchers_, args, os);
      }
      StringMatchResultListener listener;
      if (!extra_matcher_.MatchAndExplain(args, &listener)) {
        *os << "    Expected args: ";
        extra_matcher_.DescribeTo(os);
        *os << "\n           Actual: don't match";

        internal::PrintIfNotEmpty(listener.str(), os);
        *os << "\n";
      }
    } else if (!AllPrerequisitesAreSatisfied()) {
      *os << "         Expected: all pre-requisites are satisfied\n"
          << "           Actual: the following immediate pre-requisites "
          << "are not satisfied:\n";
      ExpectationSet unsatisfied_prereqs;
      FindUnsatisfiedPrerequisites(&unsatisfied_prereqs);
      int i = 0;
      for (ExpectationSet::const_iterator it = unsatisfied_prereqs.begin();
           it != unsatisfied_prereqs.end(); ++it) {
        it->expectation_base()->DescribeLocationTo(os);
        *os << "pre-requisite #" << i++ << "\n";
      }
      *os << "                   (end of pre-requisites)\n";
    } else {
      // This line is here just for completeness' sake.  It will never
      // be executed as currently the ExplainMatchResultTo() function
      // is called only when the mock function call does NOT match the
      // expectation.
      *os << "The call matches the expectation.\n";
    }
  }

  // Returns the action that should be taken for the current invocation.
  const Action<F>& GetCurrentAction(
      const FunctionMockerBase<F>* mocker,
      const ArgumentTuple& args) const
          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    const int count = call_count();
    Assert(count >= 1, __FILE__, __LINE__,
           "call_count() is <= 0 when GetCurrentAction() is "
           "called - this should never happen.");

    const int action_count = static_cast<int>(untyped_actions_.size());
    if (action_count > 0 && !repeated_action_specified_ &&
        count > action_count) {
      // If there is at least one WillOnce() and no WillRepeatedly(),
      // we warn the user when the WillOnce() clauses ran out.
      ::std::stringstream ss;
      DescribeLocationTo(&ss);
      ss << "Actions ran out in " << source_text() << "...\n"
         << "Called " << count << " times, but only "
         << action_count << " WillOnce()"
         << (action_count == 1 ? " is" : "s are") << " specified - ";
      mocker->DescribeDefaultActionTo(args, &ss);
      Log(kWarning, ss.str(), 1);
    }

    return count <= action_count ?
        *static_cast<const Action<F>*>(untyped_actions_[count - 1]) :
        repeated_action();
  }

  // Given the arguments of a mock function call, if the call will
  // over-saturate this expectation, returns the default action;
  // otherwise, returns the next action in this expectation.  Also
  // describes *what* happened to 'what', and explains *why* Google
  // Mock does it to 'why'.  This method is not const as it calls
  // IncrementCallCount().  A return value of NULL means the default
  // action.
  const Action<F>* GetActionForArguments(
      const FunctionMockerBase<F>* mocker,
      const ArgumentTuple& args,
      ::std::ostream* what,
      ::std::ostream* why)
          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    if (IsSaturated()) {
      // We have an excessive call.
      IncrementCallCount();
      *what << "Mock function called more times than expected - ";
      mocker->DescribeDefaultActionTo(args, what);
      DescribeCallCountTo(why);

      // TODO(wan@google.com): allow the user to control whether
      // unexpected calls should fail immediately or continue using a
      // flag --gmock_unexpected_calls_are_fatal.
      return NULL;
    }

    IncrementCallCount();
    RetireAllPreRequisites();

    if (retires_on_saturation_ && IsSaturated()) {
      Retire();
    }

    // Must be done after IncrementCount()!
    *what << "Mock function call matches " << source_text() <<"...\n";
    return &(GetCurrentAction(mocker, args));
  }

  // All the fields below won't change once the EXPECT_CALL()
  // statement finishes.
  FunctionMockerBase<F>* const owner_;
  ArgumentMatcherTuple matchers_;
  Matcher<const ArgumentTuple&> extra_matcher_;
  Action<F> repeated_action_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(TypedExpectation);
};  // class TypedExpectation

// A MockSpec object is used by ON_CALL() or EXPECT_CALL() for
// specifying the default behavior of, or expectation on, a mock
// function.

// Note: class MockSpec really belongs to the ::testing namespace.
// However if we define it in ::testing, MSVC will complain when
// classes in ::testing::internal declare it as a friend class
// template.  To workaround this compiler bug, we define MockSpec in
// ::testing::internal and import it into ::testing.

// Logs a message including file and line number information.
GTEST_API_ void LogWithLocation(testing::internal::LogSeverity severity,
                                const char* file, int line,
                                const string& message);

template <typename F>
class MockSpec {
 public:
  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
  typedef typename internal::Function<F>::ArgumentMatcherTuple
      ArgumentMatcherTuple;

  // Constructs a MockSpec object, given the function mocker object
  // that the spec is associated with.
  explicit MockSpec(internal::FunctionMockerBase<F>* function_mocker)
      : function_mocker_(function_mocker) {}

  // Adds a new default action spec to the function mocker and returns
  // the newly created spec.
  internal::OnCallSpec<F>& InternalDefaultActionSetAt(
      const char* file, int line, const char* obj, const char* call) {
    LogWithLocation(internal::kInfo, file, line,
        string("ON_CALL(") + obj + ", " + call + ") invoked");
    return function_mocker_->AddNewOnCallSpec(file, line, matchers_);
  }

  // Adds a new expectation spec to the function mocker and returns
  // the newly created spec.
  internal::TypedExpectation<F>& InternalExpectedAt(
      const char* file, int line, const char* obj, const char* call) {
    const string source_text(string("EXPECT_CALL(") + obj + ", " + call + ")");
    LogWithLocation(internal::kInfo, file, line, source_text + " invoked");
    return function_mocker_->AddNewExpectation(
        file, line, source_text, matchers_);
  }

 private:
  template <typename Function>
  friend class internal::FunctionMocker;

  void SetMatchers(const ArgumentMatcherTuple& matchers) {
    matchers_ = matchers;
  }

  // The function mocker that owns this spec.
  internal::FunctionMockerBase<F>* const function_mocker_;
  // The argument matchers specified in the spec.
  ArgumentMatcherTuple matchers_;

  GTEST_DISALLOW_ASSIGN_(MockSpec);
};  // class MockSpec

// MSVC warns about using 'this' in base member initializer list, so
// we need to temporarily disable the warning.  We have to do it for
// the entire class to suppress the warning, even though it's about
// the constructor only.

#ifdef _MSC_VER
# pragma warning(push)          // Saves the current warning state.
# pragma warning(disable:4355)  // Temporarily disables warning 4355.
#endif  // _MSV_VER

// C++ treats the void type specially.  For example, you cannot define
// a void-typed variable or pass a void value to a function.
// ActionResultHolder<T> holds a value of type T, where T must be a
// copyable type or void (T doesn't need to be default-constructable).
// It hides the syntactic difference between void and other types, and
// is used to unify the code for invoking both void-returning and
// non-void-returning mock functions.

// Untyped base class for ActionResultHolder<T>.
class UntypedActionResultHolderBase {
 public:
  virtual ~UntypedActionResultHolderBase() {}

  // Prints the held value as an action's result to os.
  virtual void PrintAsActionResult(::std::ostream* os) const = 0;
};

// This generic definition is used when T is not void.
template <typename T>
class ActionResultHolder : public UntypedActionResultHolderBase {
 public:
  explicit ActionResultHolder(T a_value) : value_(a_value) {}

  // The compiler-generated copy constructor and assignment operator
  // are exactly what we need, so we don't need to define them.

  // Returns the held value and deletes this object.
  T GetValueAndDelete() const {
    T retval(value_);
    delete this;
    return retval;
  }

  // Prints the held value as an action's result to os.
  virtual void PrintAsActionResult(::std::ostream* os) const {
    *os << "\n          Returns: ";
    // T may be a reference type, so we don't use UniversalPrint().
    UniversalPrinter<T>::Print(value_, os);
  }

  // Performs the given mock function's default action and returns the
  // result in a new-ed ActionResultHolder.
  template <typename F>
  static ActionResultHolder* PerformDefaultAction(
      const FunctionMockerBase<F>* func_mocker,
      const typename Function<F>::ArgumentTuple& args,
      const string& call_description) {
    return new ActionResultHolder(
        func_mocker->PerformDefaultAction(args, call_description));
  }

  // Performs the given action and returns the result in a new-ed
  // ActionResultHolder.
  template <typename F>
  static ActionResultHolder*
  PerformAction(const Action<F>& action,
                const typename Function<F>::ArgumentTuple& args) {
    return new ActionResultHolder(action.Perform(args));
  }

 private:
  T value_;

  // T could be a reference type, so = isn't supported.
  GTEST_DISALLOW_ASSIGN_(ActionResultHolder);
};

// Specialization for T = void.
template <>
class ActionResultHolder<void> : public UntypedActionResultHolderBase {
 public:
  void GetValueAndDelete() const { delete this; }

  virtual void PrintAsActionResult(::std::ostream* /* os */) const {}

  // Performs the given mock function's default action and returns NULL;
  template <typename F>
  static ActionResultHolder* PerformDefaultAction(
      const FunctionMockerBase<F>* func_mocker,
      const typename Function<F>::ArgumentTuple& args,
      const string& call_description) {
    func_mocker->PerformDefaultAction(args, call_description);
    return NULL;
  }

  // Performs the given action and returns NULL.
  template <typename F>
  static ActionResultHolder* PerformAction(
      const Action<F>& action,
      const typename Function<F>::ArgumentTuple& args) {
    action.Perform(args);
    return NULL;
  }
};

// The base of the function mocker class for the given function type.
// We put the methods in this class instead of its child to avoid code
// bloat.
template <typename F>
class FunctionMockerBase : public UntypedFunctionMockerBase {
 public:
  typedef typename Function<F>::Result Result;
  typedef typename Function<F>::ArgumentTuple ArgumentTuple;
  typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;

  FunctionMockerBase() : current_spec_(this) {}

  // The destructor verifies that all expectations on this mock
  // function have been satisfied.  If not, it will report Google Test
  // non-fatal failures for the violations.
  virtual ~FunctionMockerBase()
        GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
    MutexLock l(&g_gmock_mutex);
    VerifyAndClearExpectationsLocked();
    Mock::UnregisterLocked(this);
    ClearDefaultActionsLocked();
  }

  // Returns the ON_CALL spec that matches this mock function with the
  // given arguments; returns NULL if no matching ON_CALL is found.
  // L = *
  const OnCallSpec<F>* FindOnCallSpec(
      const ArgumentTuple& args) const {
    for (UntypedOnCallSpecs::const_reverse_iterator it
             = untyped_on_call_specs_.rbegin();
         it != untyped_on_call_specs_.rend(); ++it) {
      const OnCallSpec<F>* spec = static_cast<const OnCallSpec<F>*>(*it);
      if (spec->Matches(args))
        return spec;
    }

    return NULL;
  }

  // Performs the default action of this mock function on the given
  // arguments and returns the result. Asserts (or throws if
  // exceptions are enabled) with a helpful call descrption if there
  // is no valid return value. This method doesn't depend on the
  // mutable state of this object, and thus can be called concurrently
  // without locking.
  // L = *
  Result PerformDefaultAction(const ArgumentTuple& args,
                              const string& call_description) const {
    const OnCallSpec<F>* const spec =
        this->FindOnCallSpec(args);
    if (spec != NULL) {
      return spec->GetAction().Perform(args);
    }
    const string message = call_description +
        "\n    The mock function has no default action "
        "set, and its return type has no default value set.";
#if GTEST_HAS_EXCEPTIONS
    if (!DefaultValue<Result>::Exists()) {
      throw std::runtime_error(message);
    }
#else
    Assert(DefaultValue<Result>::Exists(), "", -1, message);
#endif
    return DefaultValue<Result>::Get();
  }

  // Performs the default action with the given arguments and returns
  // the action's result.  The call description string will be used in
  // the error message to describe the call in the case the default
  // action fails.  The caller is responsible for deleting the result.
  // L = *
  virtual UntypedActionResultHolderBase* UntypedPerformDefaultAction(
      const void* untyped_args,  // must point to an ArgumentTuple
      const string& call_description) const {
    const ArgumentTuple& args =
        *static_cast<const ArgumentTuple*>(untyped_args);
    return ResultHolder::PerformDefaultAction(this, args, call_description);
  }

  // Performs the given action with the given arguments and returns
  // the action's result.  The caller is responsible for deleting the
  // result.
  // L = *
  virtual UntypedActionResultHolderBase* UntypedPerformAction(
      const void* untyped_action, const void* untyped_args) const {
    // Make a copy of the action before performing it, in case the
    // action deletes the mock object (and thus deletes itself).
    const Action<F> action = *static_cast<const Action<F>*>(untyped_action);
    const ArgumentTuple& args =
        *static_cast<const ArgumentTuple*>(untyped_args);
    return ResultHolder::PerformAction(action, args);
  }

  // Implements UntypedFunctionMockerBase::ClearDefaultActionsLocked():
  // clears the ON_CALL()s set on this mock function.
  virtual void ClearDefaultActionsLocked()
      GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();

    // Deleting our default actions 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 actions within the context of the global mutex we may deadlock
    // when this method is called again. Instead, make a copy of the set of
    // actions to delete, clear our set within the mutex, and then delete the
    // actions outside of the mutex.
    UntypedOnCallSpecs specs_to_delete;
    untyped_on_call_specs_.swap(specs_to_delete);

    g_gmock_mutex.Unlock();
    for (UntypedOnCallSpecs::const_iterator it =
             specs_to_delete.begin();
         it != specs_to_delete.end(); ++it) {
      delete static_cast<const OnCallSpec<F>*>(*it);
    }

    // Lock the mutex again, since the caller expects it to be locked when we
    // return.
    g_gmock_mutex.Lock();
  }

 protected:
  template <typename Function>
  friend class MockSpec;

  typedef ActionResultHolder<Result> ResultHolder;

  // Returns the result of invoking this mock function with the given
  // arguments.  This function can be safely called from multiple
  // threads concurrently.
  Result InvokeWith(const ArgumentTuple& args)
        GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
    return static_cast<const ResultHolder*>(
        this->UntypedInvokeWith(&args))->GetValueAndDelete();
  }

  // Adds and returns a default action spec for this mock function.
  OnCallSpec<F>& AddNewOnCallSpec(
      const char* file, int line,
      const ArgumentMatcherTuple& m)
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
    Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
    OnCallSpec<F>* const on_call_spec = new OnCallSpec<F>(file, line, m);
    untyped_on_call_specs_.push_back(on_call_spec);
    return *on_call_spec;
  }

  // Adds and returns an expectation spec for this mock function.
  TypedExpectation<F>& AddNewExpectation(
      const char* file,
      int line,
      const string& source_text,
      const ArgumentMatcherTuple& m)
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
    Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
    TypedExpectation<F>* const expectation =
        new TypedExpectation<F>(this, file, line, source_text, m);
    const linked_ptr<ExpectationBase> untyped_expectation(expectation);
    untyped_expectations_.push_back(untyped_expectation);

    // Adds this expectation into the implicit sequence if there is one.
    Sequence* const implicit_sequence = g_gmock_implicit_sequence.get();
    if (implicit_sequence != NULL) {
      implicit_sequence->AddExpectation(Expectation(untyped_expectation));
    }

    return *expectation;
  }

  // The current spec (either default action spec or expectation spec)
  // being described on this function mocker.
  MockSpec<F>& current_spec() { return current_spec_; }

 private:
  template <typename Func> friend class TypedExpectation;

  // Some utilities needed for implementing UntypedInvokeWith().

  // Describes what default action will be performed for the given
  // arguments.
  // L = *
  void DescribeDefaultActionTo(const ArgumentTuple& args,
                               ::std::ostream* os) const {
    const OnCallSpec<F>* const spec = FindOnCallSpec(args);

    if (spec == NULL) {
      *os << (internal::type_equals<Result, void>::value ?
              "returning directly.\n" :
              "returning default value.\n");
    } else {
      *os << "taking default action specified at:\n"
          << FormatFileLocation(spec->file(), spec->line()) << "\n";
    }
  }

  // Writes a message that the call is uninteresting (i.e. neither
  // explicitly expected nor explicitly unexpected) to the given
  // ostream.
  virtual void UntypedDescribeUninterestingCall(
      const void* untyped_args,
      ::std::ostream* os) const
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
    const ArgumentTuple& args =
        *static_cast<const ArgumentTuple*>(untyped_args);
    *os << "Uninteresting mock function call - ";
    DescribeDefaultActionTo(args, os);
    *os << "    Function call: " << Name();
    UniversalPrint(args, os);
  }

  // Returns the expectation that matches the given function arguments
  // (or NULL is there's no match); when a match is found,
  // untyped_action is set to point to the action that should be
  // performed (or NULL if the action is "do default"), and
  // is_excessive is modified to indicate whether the call exceeds the
  // expected number.
  //
  // Critical section: We must find the matching expectation and the
  // corresponding action that needs to be taken in an ATOMIC
  // transaction.  Otherwise another thread may call this mock
  // method in the middle and mess up the state.
  //
  // However, performing the action has to be left out of the critical
  // section.  The reason is that we have no control on what the
  // action does (it can invoke an arbitrary user function or even a
  // mock function) and excessive locking could cause a dead lock.
  virtual const ExpectationBase* UntypedFindMatchingExpectation(
      const void* untyped_args,
      const void** untyped_action, bool* is_excessive,
      ::std::ostream* what, ::std::ostream* why)
          GTEST_LOCK_EXCLUDED_(g_gmock_mutex) {
    const ArgumentTuple& args =
        *static_cast<const ArgumentTuple*>(untyped_args);
    MutexLock l(&g_gmock_mutex);
    TypedExpectation<F>* exp = this->FindMatchingExpectationLocked(args);
    if (exp == NULL) {  // A match wasn't found.
      this->FormatUnexpectedCallMessageLocked(args, what, why);
      return NULL;
    }

    // This line must be done before calling GetActionForArguments(),
    // which will increment the call count for *exp and thus affect
    // its saturation status.
    *is_excessive = exp->IsSaturated();
    const Action<F>* action = exp->GetActionForArguments(this, args, what, why);
    if (action != NULL && action->IsDoDefault())
      action = NULL;  // Normalize "do default" to NULL.
    *untyped_action = action;
    return exp;
  }

  // Prints the given function arguments to the ostream.
  virtual void UntypedPrintArgs(const void* untyped_args,
                                ::std::ostream* os) const {
    const ArgumentTuple& args =
        *static_cast<const ArgumentTuple*>(untyped_args);
    UniversalPrint(args, os);
  }

  // Returns the expectation that matches the arguments, or NULL if no
  // expectation matches them.
  TypedExpectation<F>* FindMatchingExpectationLocked(
      const ArgumentTuple& args) const
          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    for (typename UntypedExpectations::const_reverse_iterator it =
             untyped_expectations_.rbegin();
         it != untyped_expectations_.rend(); ++it) {
      TypedExpectation<F>* const exp =
          static_cast<TypedExpectation<F>*>(it->get());
      if (exp->ShouldHandleArguments(args)) {
        return exp;
      }
    }
    return NULL;
  }

  // Returns a message that the arguments don't match any expectation.
  void FormatUnexpectedCallMessageLocked(
      const ArgumentTuple& args,
      ::std::ostream* os,
      ::std::ostream* why) const
          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    *os << "\nUnexpected mock function call - ";
    DescribeDefaultActionTo(args, os);
    PrintTriedExpectationsLocked(args, why);
  }

  // Prints a list of expectations that have been tried against the
  // current mock function call.
  void PrintTriedExpectationsLocked(
      const ArgumentTuple& args,
      ::std::ostream* why) const
          GTEST_EXCLUSIVE_LOCK_REQUIRED_(g_gmock_mutex) {
    g_gmock_mutex.AssertHeld();
    const int count = static_cast<int>(untyped_expectations_.size());
    *why << "Google Mock tried the following " << count << " "
         << (count == 1 ? "expectation, but it didn't match" :
             "expectations, but none matched")
         << ":\n";
    for (int i = 0; i < count; i++) {
      TypedExpectation<F>* const expectation =
          static_cast<TypedExpectation<F>*>(untyped_expectations_[i].get());
      *why << "\n";
      expectation->DescribeLocationTo(why);
      if (count > 1) {
        *why << "tried expectation #" << i << ": ";
      }
      *why << expectation->source_text() << "...\n";
      expectation->ExplainMatchResultTo(args, why);
      expectation->DescribeCallCountTo(why);
    }
  }

  // The current spec (either default action spec or expectation spec)
  // being described on this function mocker.
  MockSpec<F> current_spec_;

  // There is no generally useful and implementable semantics of
  // copying a mock object, so copying a mock is usually a user error.
  // Thus we disallow copying function mockers.  If the user really
  // wants to copy a mock object, he should implement his own copy
  // operation, for example:
  //
  //   class MockFoo : public Foo {
  //    public:
  //     // Defines a copy constructor explicitly.
  //     MockFoo(const MockFoo& src) {}
  //     ...
  //   };
  GTEST_DISALLOW_COPY_AND_ASSIGN_(FunctionMockerBase);
};  // class FunctionMockerBase

#ifdef _MSC_VER
# pragma warning(pop)  // Restores the warning state.
#endif  // _MSV_VER

// Implements methods of FunctionMockerBase.

// 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.

// Reports an uninteresting call (whose description is in msg) in the
// manner specified by 'reaction'.
void ReportUninterestingCall(CallReaction reaction, const string& msg);

}  // namespace internal

// The style guide prohibits "using" statements in a namespace scope
// inside a header file.  However, the MockSpec class template is
// meant to be defined in the ::testing namespace.  The following line
// is just a trick for working around a bug in MSVC 8.0, which cannot
// handle it if we define MockSpec in ::testing.
using internal::MockSpec;

// Const(x) is a convenient function for obtaining a const reference
// to x.  This is useful for setting expectations on an overloaded
// const mock method, e.g.
//
//   class MockFoo : public FooInterface {
//    public:
//     MOCK_METHOD0(Bar, int());
//     MOCK_CONST_METHOD0(Bar, int&());
//   };
//
//   MockFoo foo;
//   // Expects a call to non-const MockFoo::Bar().
//   EXPECT_CALL(foo, Bar());
//   // Expects a call to const MockFoo::Bar().
//   EXPECT_CALL(Const(foo), Bar());
template <typename T>
inline const T& Const(const T& x) { return x; }

// Constructs an Expectation object that references and co-owns exp.
inline Expectation::Expectation(internal::ExpectationBase& exp)  // NOLINT
    : expectation_base_(exp.GetHandle().expectation_base()) {}

}  // namespace testing

// A separate macro is required to avoid compile errors when the name
// of the method used in call is a result of macro expansion.
// See CompilesWithMethodNameExpandedFromMacro tests in
// internal/gmock-spec-builders_test.cc for more details.
#define GMOCK_ON_CALL_IMPL_(obj, call) \
    ((obj).gmock_##call).InternalDefaultActionSetAt(__FILE__, __LINE__, \
                                                    #obj, #call)
#define ON_CALL(obj, call) GMOCK_ON_CALL_IMPL_(obj, call)

#define GMOCK_EXPECT_CALL_IMPL_(obj, call) \
    ((obj).gmock_##call).InternalExpectedAt(__FILE__, __LINE__, #obj, #call)
#define EXPECT_CALL(obj, call) GMOCK_EXPECT_CALL_IMPL_(obj, call)

#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_