summaryrefslogtreecommitdiff
path: root/ext/googletest/include/gtest/internal/gtest-tuple.h.pump
blob: 429ddfeecaa74e71a9d89ec568e98581b7662b07 (plain)
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
$$ -*- mode: c++; -*-
$var n = 10  $$ Maximum number of tuple fields we want to support.
$$ This meta comment fixes auto-indentation in Emacs. }}
// Copyright 2009 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)

// Implements a subset of TR1 tuple needed by Google Test and Google Mock.

#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_
#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_

#include <utility>  // For ::std::pair.

// The compiler used in Symbian has a bug that prevents us from declaring the
// tuple template as a friend (it complains that tuple is redefined).  This
// hack bypasses the bug by declaring the members that should otherwise be
// private as public.
// Sun Studio versions < 12 also have the above bug.
#if defined(__SYMBIAN32__) || (defined(__SUNPRO_CC) && __SUNPRO_CC < 0x590)
# define GTEST_DECLARE_TUPLE_AS_FRIEND_ public:
#else
# define GTEST_DECLARE_TUPLE_AS_FRIEND_ \
    template <GTEST_$(n)_TYPENAMES_(U)> friend class tuple; \
   private:
#endif

// Visual Studio 2010, 2012, and 2013 define symbols in std::tr1 that conflict
// with our own definitions. Therefore using our own tuple does not work on
// those compilers.
#if defined(_MSC_VER) && _MSC_VER >= 1600  /* 1600 is Visual Studio 2010 */
# error "gtest's tuple doesn't compile on Visual Studio 2010 or later. \
GTEST_USE_OWN_TR1_TUPLE must be set to 0 on those compilers."
#endif


$range i 0..n-1
$range j 0..n
$range k 1..n
// GTEST_n_TUPLE_(T) is the type of an n-tuple.
#define GTEST_0_TUPLE_(T) tuple<>

$for k [[
$range m 0..k-1
$range m2 k..n-1
#define GTEST_$(k)_TUPLE_(T) tuple<$for m, [[T##$m]]$for m2 [[, void]]>

]]

// GTEST_n_TYPENAMES_(T) declares a list of n typenames.

$for j [[
$range m 0..j-1
#define GTEST_$(j)_TYPENAMES_(T) $for m, [[typename T##$m]]


]]

// In theory, defining stuff in the ::std namespace is undefined
// behavior.  We can do this as we are playing the role of a standard
// library vendor.
namespace std {
namespace tr1 {

template <$for i, [[typename T$i = void]]>
class tuple;

// Anything in namespace gtest_internal is Google Test's INTERNAL
// IMPLEMENTATION DETAIL and MUST NOT BE USED DIRECTLY in user code.
namespace gtest_internal {

// ByRef<T>::type is T if T is a reference; otherwise it's const T&.
template <typename T>
struct ByRef { typedef const T& type; };  // NOLINT
template <typename T>
struct ByRef<T&> { typedef T& type; };  // NOLINT

// A handy wrapper for ByRef.
#define GTEST_BY_REF_(T) typename ::std::tr1::gtest_internal::ByRef<T>::type

// AddRef<T>::type is T if T is a reference; otherwise it's T&.  This
// is the same as tr1::add_reference<T>::type.
template <typename T>
struct AddRef { typedef T& type; };  // NOLINT
template <typename T>
struct AddRef<T&> { typedef T& type; };  // NOLINT

// A handy wrapper for AddRef.
#define GTEST_ADD_REF_(T) typename ::std::tr1::gtest_internal::AddRef<T>::type

// A helper for implementing get<k>().
template <int k> class Get;

// A helper for implementing tuple_element<k, T>.  kIndexValid is true
// iff k < the number of fields in tuple type T.
template <bool kIndexValid, int kIndex, class Tuple>
struct TupleElement;


$for i [[
template <GTEST_$(n)_TYPENAMES_(T)>
struct TupleElement<true, $i, GTEST_$(n)_TUPLE_(T) > {
  typedef T$i type;
};


]]
}  // namespace gtest_internal

template <>
class tuple<> {
 public:
  tuple() {}
  tuple(const tuple& /* t */)  {}
  tuple& operator=(const tuple& /* t */) { return *this; }
};


$for k [[
$range m 0..k-1
template <GTEST_$(k)_TYPENAMES_(T)>
class $if k < n [[GTEST_$(k)_TUPLE_(T)]] $else [[tuple]] {
 public:
  template <int k> friend class gtest_internal::Get;

  tuple() : $for m, [[f$(m)_()]] {}

  explicit tuple($for m, [[GTEST_BY_REF_(T$m) f$m]]) : [[]]
$for m, [[f$(m)_(f$m)]] {}

  tuple(const tuple& t) : $for m, [[f$(m)_(t.f$(m)_)]] {}

  template <GTEST_$(k)_TYPENAMES_(U)>
  tuple(const GTEST_$(k)_TUPLE_(U)& t) : $for m, [[f$(m)_(t.f$(m)_)]] {}

$if k == 2 [[
  template <typename U0, typename U1>
  tuple(const ::std::pair<U0, U1>& p) : f0_(p.first), f1_(p.second) {}

]]

  tuple& operator=(const tuple& t) { return CopyFrom(t); }

  template <GTEST_$(k)_TYPENAMES_(U)>
  tuple& operator=(const GTEST_$(k)_TUPLE_(U)& t) {
    return CopyFrom(t);
  }

$if k == 2 [[
  template <typename U0, typename U1>
  tuple& operator=(const ::std::pair<U0, U1>& p) {
    f0_ = p.first;
    f1_ = p.second;
    return *this;
  }

]]

  GTEST_DECLARE_TUPLE_AS_FRIEND_

  template <GTEST_$(k)_TYPENAMES_(U)>
  tuple& CopyFrom(const GTEST_$(k)_TUPLE_(U)& t) {

$for m [[
    f$(m)_ = t.f$(m)_;

]]
    return *this;
  }


$for m [[
  T$m f$(m)_;

]]
};


]]
// 6.1.3.2 Tuple creation functions.

// Known limitations: we don't support passing an
// std::tr1::reference_wrapper<T> to make_tuple().  And we don't
// implement tie().

inline tuple<> make_tuple() { return tuple<>(); }

$for k [[
$range m 0..k-1

template <GTEST_$(k)_TYPENAMES_(T)>
inline GTEST_$(k)_TUPLE_(T) make_tuple($for m, [[const T$m& f$m]]) {
  return GTEST_$(k)_TUPLE_(T)($for m, [[f$m]]);
}

]]

// 6.1.3.3 Tuple helper classes.

template <typename Tuple> struct tuple_size;


$for j [[
template <GTEST_$(j)_TYPENAMES_(T)>
struct tuple_size<GTEST_$(j)_TUPLE_(T) > {
  static const int value = $j;
};


]]
template <int k, class Tuple>
struct tuple_element {
  typedef typename gtest_internal::TupleElement<
      k < (tuple_size<Tuple>::value), k, Tuple>::type type;
};

#define GTEST_TUPLE_ELEMENT_(k, Tuple) typename tuple_element<k, Tuple >::type

// 6.1.3.4 Element access.

namespace gtest_internal {


$for i [[
template <>
class Get<$i> {
 public:
  template <class Tuple>
  static GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_($i, Tuple))
  Field(Tuple& t) { return t.f$(i)_; }  // NOLINT

  template <class Tuple>
  static GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_($i, Tuple))
  ConstField(const Tuple& t) { return t.f$(i)_; }
};


]]
}  // namespace gtest_internal

template <int k, GTEST_$(n)_TYPENAMES_(T)>
GTEST_ADD_REF_(GTEST_TUPLE_ELEMENT_(k, GTEST_$(n)_TUPLE_(T)))
get(GTEST_$(n)_TUPLE_(T)& t) {
  return gtest_internal::Get<k>::Field(t);
}

template <int k, GTEST_$(n)_TYPENAMES_(T)>
GTEST_BY_REF_(GTEST_TUPLE_ELEMENT_(k,  GTEST_$(n)_TUPLE_(T)))
get(const GTEST_$(n)_TUPLE_(T)& t) {
  return gtest_internal::Get<k>::ConstField(t);
}

// 6.1.3.5 Relational operators

// We only implement == and !=, as we don't have a need for the rest yet.

namespace gtest_internal {

// SameSizeTuplePrefixComparator<k, k>::Eq(t1, t2) returns true if the
// first k fields of t1 equals the first k fields of t2.
// SameSizeTuplePrefixComparator(k1, k2) would be a compiler error if
// k1 != k2.
template <int kSize1, int kSize2>
struct SameSizeTuplePrefixComparator;

template <>
struct SameSizeTuplePrefixComparator<0, 0> {
  template <class Tuple1, class Tuple2>
  static bool Eq(const Tuple1& /* t1 */, const Tuple2& /* t2 */) {
    return true;
  }
};

template <int k>
struct SameSizeTuplePrefixComparator<k, k> {
  template <class Tuple1, class Tuple2>
  static bool Eq(const Tuple1& t1, const Tuple2& t2) {
    return SameSizeTuplePrefixComparator<k - 1, k - 1>::Eq(t1, t2) &&
        ::std::tr1::get<k - 1>(t1) == ::std::tr1::get<k - 1>(t2);
  }
};

}  // namespace gtest_internal

template <GTEST_$(n)_TYPENAMES_(T), GTEST_$(n)_TYPENAMES_(U)>
inline bool operator==(const GTEST_$(n)_TUPLE_(T)& t,
                       const GTEST_$(n)_TUPLE_(U)& u) {
  return gtest_internal::SameSizeTuplePrefixComparator<
      tuple_size<GTEST_$(n)_TUPLE_(T) >::value,
      tuple_size<GTEST_$(n)_TUPLE_(U) >::value>::Eq(t, u);
}

template <GTEST_$(n)_TYPENAMES_(T), GTEST_$(n)_TYPENAMES_(U)>
inline bool operator!=(const GTEST_$(n)_TUPLE_(T)& t,
                       const GTEST_$(n)_TUPLE_(U)& u) { return !(t == u); }

// 6.1.4 Pairs.
// Unimplemented.

}  // namespace tr1
}  // namespace std


$for j [[
#undef GTEST_$(j)_TUPLE_

]]


$for j [[
#undef GTEST_$(j)_TYPENAMES_

]]

#undef GTEST_DECLARE_TUPLE_AS_FRIEND_
#undef GTEST_BY_REF_
#undef GTEST_ADD_REF_
#undef GTEST_TUPLE_ELEMENT_

#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TUPLE_H_