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gmock-more-actions.h
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29 
30 // Google Mock - a framework for writing C++ mock classes.
31 //
32 // This file implements some commonly used variadic actions.
33 
34 // IWYU pragma: private, include "gmock/gmock.h"
35 // IWYU pragma: friend gmock/.*
36 
37 #ifndef GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
38 #define GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
39 
40 #include <memory>
41 #include <utility>
42 
43 #include "gmock/gmock-actions.h"
44 #include "gmock/internal/gmock-port.h"
45 
46 // Include any custom callback actions added by the local installation.
47 #include "gmock/internal/custom/gmock-generated-actions.h"
48 
49 // Sometimes you want to give an action explicit template parameters
50 // that cannot be inferred from its value parameters. ACTION() and
51 // ACTION_P*() don't support that. ACTION_TEMPLATE() remedies that
52 // and can be viewed as an extension to ACTION() and ACTION_P*().
53 //
54 // The syntax:
55 //
56 // ACTION_TEMPLATE(ActionName,
57 // HAS_m_TEMPLATE_PARAMS(kind1, name1, ..., kind_m, name_m),
58 // AND_n_VALUE_PARAMS(p1, ..., p_n)) { statements; }
59 //
60 // defines an action template that takes m explicit template
61 // parameters and n value parameters. name_i is the name of the i-th
62 // template parameter, and kind_i specifies whether it's a typename,
63 // an integral constant, or a template. p_i is the name of the i-th
64 // value parameter.
65 //
66 // Example:
67 //
68 // // DuplicateArg<k, T>(output) converts the k-th argument of the mock
69 // // function to type T and copies it to *output.
70 // ACTION_TEMPLATE(DuplicateArg,
71 // HAS_2_TEMPLATE_PARAMS(int, k, typename, T),
72 // AND_1_VALUE_PARAMS(output)) {
73 // *output = T(::std::get<k>(args));
74 // }
75 // ...
76 // int n;
77 // EXPECT_CALL(mock, Foo(_, _))
78 // .WillOnce(DuplicateArg<1, unsigned char>(&n));
79 //
80 // To create an instance of an action template, write:
81 //
82 // ActionName<t1, ..., t_m>(v1, ..., v_n)
83 //
84 // where the ts are the template arguments and the vs are the value
85 // arguments. The value argument types are inferred by the compiler.
86 // If you want to explicitly specify the value argument types, you can
87 // provide additional template arguments:
88 //
89 // ActionName<t1, ..., t_m, u1, ..., u_k>(v1, ..., v_n)
90 //
91 // where u_i is the desired type of v_i.
92 //
93 // ACTION_TEMPLATE and ACTION/ACTION_P* can be overloaded on the
94 // number of value parameters, but not on the number of template
95 // parameters. Without the restriction, the meaning of the following
96 // is unclear:
97 //
98 // OverloadedAction<int, bool>(x);
99 //
100 // Are we using a single-template-parameter action where 'bool' refers
101 // to the type of x, or are we using a two-template-parameter action
102 // where the compiler is asked to infer the type of x?
103 //
104 // Implementation notes:
105 //
106 // GMOCK_INTERNAL_*_HAS_m_TEMPLATE_PARAMS and
107 // GMOCK_INTERNAL_*_AND_n_VALUE_PARAMS are internal macros for
108 // implementing ACTION_TEMPLATE. The main trick we use is to create
109 // new macro invocations when expanding a macro. For example, we have
110 //
111 // #define ACTION_TEMPLATE(name, template_params, value_params)
112 // ... GMOCK_INTERNAL_DECL_##template_params ...
113 //
114 // which causes ACTION_TEMPLATE(..., HAS_1_TEMPLATE_PARAMS(typename, T), ...)
115 // to expand to
116 //
117 // ... GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS(typename, T) ...
118 //
119 // Since GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS is a macro, the
120 // preprocessor will continue to expand it to
121 //
122 // ... typename T ...
123 //
124 // This technique conforms to the C++ standard and is portable. It
125 // allows us to implement action templates using O(N) code, where N is
126 // the maximum number of template/value parameters supported. Without
127 // using it, we'd have to devote O(N^2) amount of code to implement all
128 // combinations of m and n.
129 
130 // Declares the template parameters.
131 #define GMOCK_INTERNAL_DECL_HAS_1_TEMPLATE_PARAMS(kind0, name0) kind0 name0
132 #define GMOCK_INTERNAL_DECL_HAS_2_TEMPLATE_PARAMS(kind0, name0, kind1, name1) \
133  kind0 name0, kind1 name1
134 #define GMOCK_INTERNAL_DECL_HAS_3_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
135  kind2, name2) \
136  kind0 name0, kind1 name1, kind2 name2
137 #define GMOCK_INTERNAL_DECL_HAS_4_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
138  kind2, name2, kind3, name3) \
139  kind0 name0, kind1 name1, kind2 name2, kind3 name3
140 #define GMOCK_INTERNAL_DECL_HAS_5_TEMPLATE_PARAMS( \
141  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4) \
142  kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4
143 #define GMOCK_INTERNAL_DECL_HAS_6_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
144  kind2, name2, kind3, name3, \
145  kind4, name4, kind5, name5) \
146  kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4, kind5 name5
147 #define GMOCK_INTERNAL_DECL_HAS_7_TEMPLATE_PARAMS( \
148  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
149  kind5, name5, kind6, name6) \
150  kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4, \
151  kind5 name5, kind6 name6
152 #define GMOCK_INTERNAL_DECL_HAS_8_TEMPLATE_PARAMS( \
153  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
154  kind5, name5, kind6, name6, kind7, name7) \
155  kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4, \
156  kind5 name5, kind6 name6, kind7 name7
157 #define GMOCK_INTERNAL_DECL_HAS_9_TEMPLATE_PARAMS( \
158  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
159  kind5, name5, kind6, name6, kind7, name7, kind8, name8) \
160  kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4, \
161  kind5 name5, kind6 name6, kind7 name7, kind8 name8
162 #define GMOCK_INTERNAL_DECL_HAS_10_TEMPLATE_PARAMS( \
163  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
164  kind5, name5, kind6, name6, kind7, name7, kind8, name8, kind9, name9) \
165  kind0 name0, kind1 name1, kind2 name2, kind3 name3, kind4 name4, \
166  kind5 name5, kind6 name6, kind7 name7, kind8 name8, kind9 name9
167 
168 // Lists the template parameters.
169 #define GMOCK_INTERNAL_LIST_HAS_1_TEMPLATE_PARAMS(kind0, name0) name0
170 #define GMOCK_INTERNAL_LIST_HAS_2_TEMPLATE_PARAMS(kind0, name0, kind1, name1) \
171  name0, name1
172 #define GMOCK_INTERNAL_LIST_HAS_3_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
173  kind2, name2) \
174  name0, name1, name2
175 #define GMOCK_INTERNAL_LIST_HAS_4_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
176  kind2, name2, kind3, name3) \
177  name0, name1, name2, name3
178 #define GMOCK_INTERNAL_LIST_HAS_5_TEMPLATE_PARAMS( \
179  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4) \
180  name0, name1, name2, name3, name4
181 #define GMOCK_INTERNAL_LIST_HAS_6_TEMPLATE_PARAMS(kind0, name0, kind1, name1, \
182  kind2, name2, kind3, name3, \
183  kind4, name4, kind5, name5) \
184  name0, name1, name2, name3, name4, name5
185 #define GMOCK_INTERNAL_LIST_HAS_7_TEMPLATE_PARAMS( \
186  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
187  kind5, name5, kind6, name6) \
188  name0, name1, name2, name3, name4, name5, name6
189 #define GMOCK_INTERNAL_LIST_HAS_8_TEMPLATE_PARAMS( \
190  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
191  kind5, name5, kind6, name6, kind7, name7) \
192  name0, name1, name2, name3, name4, name5, name6, name7
193 #define GMOCK_INTERNAL_LIST_HAS_9_TEMPLATE_PARAMS( \
194  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
195  kind5, name5, kind6, name6, kind7, name7, kind8, name8) \
196  name0, name1, name2, name3, name4, name5, name6, name7, name8
197 #define GMOCK_INTERNAL_LIST_HAS_10_TEMPLATE_PARAMS( \
198  kind0, name0, kind1, name1, kind2, name2, kind3, name3, kind4, name4, \
199  kind5, name5, kind6, name6, kind7, name7, kind8, name8, kind9, name9) \
200  name0, name1, name2, name3, name4, name5, name6, name7, name8, name9
201 
202 // Declares the types of value parameters.
203 #define GMOCK_INTERNAL_DECL_TYPE_AND_0_VALUE_PARAMS()
204 #define GMOCK_INTERNAL_DECL_TYPE_AND_1_VALUE_PARAMS(p0) , typename p0##_type
205 #define GMOCK_INTERNAL_DECL_TYPE_AND_2_VALUE_PARAMS(p0, p1) \
206  , typename p0##_type, typename p1##_type
207 #define GMOCK_INTERNAL_DECL_TYPE_AND_3_VALUE_PARAMS(p0, p1, p2) \
208  , typename p0##_type, typename p1##_type, typename p2##_type
209 #define GMOCK_INTERNAL_DECL_TYPE_AND_4_VALUE_PARAMS(p0, p1, p2, p3) \
210  , typename p0##_type, typename p1##_type, typename p2##_type, \
211  typename p3##_type
212 #define GMOCK_INTERNAL_DECL_TYPE_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) \
213  , typename p0##_type, typename p1##_type, typename p2##_type, \
214  typename p3##_type, typename p4##_type
215 #define GMOCK_INTERNAL_DECL_TYPE_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) \
216  , typename p0##_type, typename p1##_type, typename p2##_type, \
217  typename p3##_type, typename p4##_type, typename p5##_type
218 #define GMOCK_INTERNAL_DECL_TYPE_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
219  p6) \
220  , typename p0##_type, typename p1##_type, typename p2##_type, \
221  typename p3##_type, typename p4##_type, typename p5##_type, \
222  typename p6##_type
223 #define GMOCK_INTERNAL_DECL_TYPE_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
224  p6, p7) \
225  , typename p0##_type, typename p1##_type, typename p2##_type, \
226  typename p3##_type, typename p4##_type, typename p5##_type, \
227  typename p6##_type, typename p7##_type
228 #define GMOCK_INTERNAL_DECL_TYPE_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
229  p6, p7, p8) \
230  , typename p0##_type, typename p1##_type, typename p2##_type, \
231  typename p3##_type, typename p4##_type, typename p5##_type, \
232  typename p6##_type, typename p7##_type, typename p8##_type
233 #define GMOCK_INTERNAL_DECL_TYPE_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
234  p6, p7, p8, p9) \
235  , typename p0##_type, typename p1##_type, typename p2##_type, \
236  typename p3##_type, typename p4##_type, typename p5##_type, \
237  typename p6##_type, typename p7##_type, typename p8##_type, \
238  typename p9##_type
239 
240 // Initializes the value parameters.
241 #define GMOCK_INTERNAL_INIT_AND_0_VALUE_PARAMS() ()
242 #define GMOCK_INTERNAL_INIT_AND_1_VALUE_PARAMS(p0) \
243  (p0##_type gmock_p0) : p0(::std::move(gmock_p0))
244 #define GMOCK_INTERNAL_INIT_AND_2_VALUE_PARAMS(p0, p1) \
245  (p0##_type gmock_p0, p1##_type gmock_p1) \
246  : p0(::std::move(gmock_p0)), p1(::std::move(gmock_p1))
247 #define GMOCK_INTERNAL_INIT_AND_3_VALUE_PARAMS(p0, p1, p2) \
248  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2) \
249  : p0(::std::move(gmock_p0)), \
250  p1(::std::move(gmock_p1)), \
251  p2(::std::move(gmock_p2))
252 #define GMOCK_INTERNAL_INIT_AND_4_VALUE_PARAMS(p0, p1, p2, p3) \
253  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
254  p3##_type gmock_p3) \
255  : p0(::std::move(gmock_p0)), \
256  p1(::std::move(gmock_p1)), \
257  p2(::std::move(gmock_p2)), \
258  p3(::std::move(gmock_p3))
259 #define GMOCK_INTERNAL_INIT_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) \
260  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
261  p3##_type gmock_p3, p4##_type gmock_p4) \
262  : p0(::std::move(gmock_p0)), \
263  p1(::std::move(gmock_p1)), \
264  p2(::std::move(gmock_p2)), \
265  p3(::std::move(gmock_p3)), \
266  p4(::std::move(gmock_p4))
267 #define GMOCK_INTERNAL_INIT_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) \
268  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
269  p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5) \
270  : p0(::std::move(gmock_p0)), \
271  p1(::std::move(gmock_p1)), \
272  p2(::std::move(gmock_p2)), \
273  p3(::std::move(gmock_p3)), \
274  p4(::std::move(gmock_p4)), \
275  p5(::std::move(gmock_p5))
276 #define GMOCK_INTERNAL_INIT_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6) \
277  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
278  p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
279  p6##_type gmock_p6) \
280  : p0(::std::move(gmock_p0)), \
281  p1(::std::move(gmock_p1)), \
282  p2(::std::move(gmock_p2)), \
283  p3(::std::move(gmock_p3)), \
284  p4(::std::move(gmock_p4)), \
285  p5(::std::move(gmock_p5)), \
286  p6(::std::move(gmock_p6))
287 #define GMOCK_INTERNAL_INIT_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7) \
288  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
289  p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
290  p6##_type gmock_p6, p7##_type gmock_p7) \
291  : p0(::std::move(gmock_p0)), \
292  p1(::std::move(gmock_p1)), \
293  p2(::std::move(gmock_p2)), \
294  p3(::std::move(gmock_p3)), \
295  p4(::std::move(gmock_p4)), \
296  p5(::std::move(gmock_p5)), \
297  p6(::std::move(gmock_p6)), \
298  p7(::std::move(gmock_p7))
299 #define GMOCK_INTERNAL_INIT_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, \
300  p8) \
301  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
302  p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
303  p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8) \
304  : p0(::std::move(gmock_p0)), \
305  p1(::std::move(gmock_p1)), \
306  p2(::std::move(gmock_p2)), \
307  p3(::std::move(gmock_p3)), \
308  p4(::std::move(gmock_p4)), \
309  p5(::std::move(gmock_p5)), \
310  p6(::std::move(gmock_p6)), \
311  p7(::std::move(gmock_p7)), \
312  p8(::std::move(gmock_p8))
313 #define GMOCK_INTERNAL_INIT_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
314  p7, p8, p9) \
315  (p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
316  p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
317  p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
318  p9##_type gmock_p9) \
319  : p0(::std::move(gmock_p0)), \
320  p1(::std::move(gmock_p1)), \
321  p2(::std::move(gmock_p2)), \
322  p3(::std::move(gmock_p3)), \
323  p4(::std::move(gmock_p4)), \
324  p5(::std::move(gmock_p5)), \
325  p6(::std::move(gmock_p6)), \
326  p7(::std::move(gmock_p7)), \
327  p8(::std::move(gmock_p8)), \
328  p9(::std::move(gmock_p9))
329 
330 // Defines the copy constructor
331 #define GMOCK_INTERNAL_DEFN_COPY_AND_0_VALUE_PARAMS() \
332  {} // Avoid https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82134
333 #define GMOCK_INTERNAL_DEFN_COPY_AND_1_VALUE_PARAMS(...) = default;
334 #define GMOCK_INTERNAL_DEFN_COPY_AND_2_VALUE_PARAMS(...) = default;
335 #define GMOCK_INTERNAL_DEFN_COPY_AND_3_VALUE_PARAMS(...) = default;
336 #define GMOCK_INTERNAL_DEFN_COPY_AND_4_VALUE_PARAMS(...) = default;
337 #define GMOCK_INTERNAL_DEFN_COPY_AND_5_VALUE_PARAMS(...) = default;
338 #define GMOCK_INTERNAL_DEFN_COPY_AND_6_VALUE_PARAMS(...) = default;
339 #define GMOCK_INTERNAL_DEFN_COPY_AND_7_VALUE_PARAMS(...) = default;
340 #define GMOCK_INTERNAL_DEFN_COPY_AND_8_VALUE_PARAMS(...) = default;
341 #define GMOCK_INTERNAL_DEFN_COPY_AND_9_VALUE_PARAMS(...) = default;
342 #define GMOCK_INTERNAL_DEFN_COPY_AND_10_VALUE_PARAMS(...) = default;
343 
344 // Declares the fields for storing the value parameters.
345 #define GMOCK_INTERNAL_DEFN_AND_0_VALUE_PARAMS()
346 #define GMOCK_INTERNAL_DEFN_AND_1_VALUE_PARAMS(p0) p0##_type p0;
347 #define GMOCK_INTERNAL_DEFN_AND_2_VALUE_PARAMS(p0, p1) \
348  p0##_type p0; \
349  p1##_type p1;
350 #define GMOCK_INTERNAL_DEFN_AND_3_VALUE_PARAMS(p0, p1, p2) \
351  p0##_type p0; \
352  p1##_type p1; \
353  p2##_type p2;
354 #define GMOCK_INTERNAL_DEFN_AND_4_VALUE_PARAMS(p0, p1, p2, p3) \
355  p0##_type p0; \
356  p1##_type p1; \
357  p2##_type p2; \
358  p3##_type p3;
359 #define GMOCK_INTERNAL_DEFN_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) \
360  p0##_type p0; \
361  p1##_type p1; \
362  p2##_type p2; \
363  p3##_type p3; \
364  p4##_type p4;
365 #define GMOCK_INTERNAL_DEFN_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) \
366  p0##_type p0; \
367  p1##_type p1; \
368  p2##_type p2; \
369  p3##_type p3; \
370  p4##_type p4; \
371  p5##_type p5;
372 #define GMOCK_INTERNAL_DEFN_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6) \
373  p0##_type p0; \
374  p1##_type p1; \
375  p2##_type p2; \
376  p3##_type p3; \
377  p4##_type p4; \
378  p5##_type p5; \
379  p6##_type p6;
380 #define GMOCK_INTERNAL_DEFN_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7) \
381  p0##_type p0; \
382  p1##_type p1; \
383  p2##_type p2; \
384  p3##_type p3; \
385  p4##_type p4; \
386  p5##_type p5; \
387  p6##_type p6; \
388  p7##_type p7;
389 #define GMOCK_INTERNAL_DEFN_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, \
390  p8) \
391  p0##_type p0; \
392  p1##_type p1; \
393  p2##_type p2; \
394  p3##_type p3; \
395  p4##_type p4; \
396  p5##_type p5; \
397  p6##_type p6; \
398  p7##_type p7; \
399  p8##_type p8;
400 #define GMOCK_INTERNAL_DEFN_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
401  p7, p8, p9) \
402  p0##_type p0; \
403  p1##_type p1; \
404  p2##_type p2; \
405  p3##_type p3; \
406  p4##_type p4; \
407  p5##_type p5; \
408  p6##_type p6; \
409  p7##_type p7; \
410  p8##_type p8; \
411  p9##_type p9;
412 
413 // Lists the value parameters.
414 #define GMOCK_INTERNAL_LIST_AND_0_VALUE_PARAMS()
415 #define GMOCK_INTERNAL_LIST_AND_1_VALUE_PARAMS(p0) p0
416 #define GMOCK_INTERNAL_LIST_AND_2_VALUE_PARAMS(p0, p1) p0, p1
417 #define GMOCK_INTERNAL_LIST_AND_3_VALUE_PARAMS(p0, p1, p2) p0, p1, p2
418 #define GMOCK_INTERNAL_LIST_AND_4_VALUE_PARAMS(p0, p1, p2, p3) p0, p1, p2, p3
419 #define GMOCK_INTERNAL_LIST_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) \
420  p0, p1, p2, p3, p4
421 #define GMOCK_INTERNAL_LIST_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) \
422  p0, p1, p2, p3, p4, p5
423 #define GMOCK_INTERNAL_LIST_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6) \
424  p0, p1, p2, p3, p4, p5, p6
425 #define GMOCK_INTERNAL_LIST_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7) \
426  p0, p1, p2, p3, p4, p5, p6, p7
427 #define GMOCK_INTERNAL_LIST_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, \
428  p8) \
429  p0, p1, p2, p3, p4, p5, p6, p7, p8
430 #define GMOCK_INTERNAL_LIST_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
431  p7, p8, p9) \
432  p0, p1, p2, p3, p4, p5, p6, p7, p8, p9
433 
434 // Lists the value parameter types.
435 #define GMOCK_INTERNAL_LIST_TYPE_AND_0_VALUE_PARAMS()
436 #define GMOCK_INTERNAL_LIST_TYPE_AND_1_VALUE_PARAMS(p0) , p0##_type
437 #define GMOCK_INTERNAL_LIST_TYPE_AND_2_VALUE_PARAMS(p0, p1) \
438  , p0##_type, p1##_type
439 #define GMOCK_INTERNAL_LIST_TYPE_AND_3_VALUE_PARAMS(p0, p1, p2) \
440  , p0##_type, p1##_type, p2##_type
441 #define GMOCK_INTERNAL_LIST_TYPE_AND_4_VALUE_PARAMS(p0, p1, p2, p3) \
442  , p0##_type, p1##_type, p2##_type, p3##_type
443 #define GMOCK_INTERNAL_LIST_TYPE_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) \
444  , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type
445 #define GMOCK_INTERNAL_LIST_TYPE_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) \
446  , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type
447 #define GMOCK_INTERNAL_LIST_TYPE_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
448  p6) \
449  , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type, p6##_type
450 #define GMOCK_INTERNAL_LIST_TYPE_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
451  p6, p7) \
452  , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type, \
453  p6##_type, p7##_type
454 #define GMOCK_INTERNAL_LIST_TYPE_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
455  p6, p7, p8) \
456  , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type, \
457  p6##_type, p7##_type, p8##_type
458 #define GMOCK_INTERNAL_LIST_TYPE_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, \
459  p6, p7, p8, p9) \
460  , p0##_type, p1##_type, p2##_type, p3##_type, p4##_type, p5##_type, \
461  p6##_type, p7##_type, p8##_type, p9##_type
462 
463 // Declares the value parameters.
464 #define GMOCK_INTERNAL_DECL_AND_0_VALUE_PARAMS()
465 #define GMOCK_INTERNAL_DECL_AND_1_VALUE_PARAMS(p0) p0##_type p0
466 #define GMOCK_INTERNAL_DECL_AND_2_VALUE_PARAMS(p0, p1) \
467  p0##_type p0, p1##_type p1
468 #define GMOCK_INTERNAL_DECL_AND_3_VALUE_PARAMS(p0, p1, p2) \
469  p0##_type p0, p1##_type p1, p2##_type p2
470 #define GMOCK_INTERNAL_DECL_AND_4_VALUE_PARAMS(p0, p1, p2, p3) \
471  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3
472 #define GMOCK_INTERNAL_DECL_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) \
473  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4
474 #define GMOCK_INTERNAL_DECL_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) \
475  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
476  p5##_type p5
477 #define GMOCK_INTERNAL_DECL_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6) \
478  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
479  p5##_type p5, p6##_type p6
480 #define GMOCK_INTERNAL_DECL_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7) \
481  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
482  p5##_type p5, p6##_type p6, p7##_type p7
483 #define GMOCK_INTERNAL_DECL_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, p7, \
484  p8) \
485  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
486  p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8
487 #define GMOCK_INTERNAL_DECL_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
488  p7, p8, p9) \
489  p0##_type p0, p1##_type p1, p2##_type p2, p3##_type p3, p4##_type p4, \
490  p5##_type p5, p6##_type p6, p7##_type p7, p8##_type p8, p9##_type p9
491 
492 // The suffix of the class template implementing the action template.
493 #define GMOCK_INTERNAL_COUNT_AND_0_VALUE_PARAMS()
494 #define GMOCK_INTERNAL_COUNT_AND_1_VALUE_PARAMS(p0) P
495 #define GMOCK_INTERNAL_COUNT_AND_2_VALUE_PARAMS(p0, p1) P2
496 #define GMOCK_INTERNAL_COUNT_AND_3_VALUE_PARAMS(p0, p1, p2) P3
497 #define GMOCK_INTERNAL_COUNT_AND_4_VALUE_PARAMS(p0, p1, p2, p3) P4
498 #define GMOCK_INTERNAL_COUNT_AND_5_VALUE_PARAMS(p0, p1, p2, p3, p4) P5
499 #define GMOCK_INTERNAL_COUNT_AND_6_VALUE_PARAMS(p0, p1, p2, p3, p4, p5) P6
500 #define GMOCK_INTERNAL_COUNT_AND_7_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6) P7
501 #define GMOCK_INTERNAL_COUNT_AND_8_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
502  p7) \
503  P8
504 #define GMOCK_INTERNAL_COUNT_AND_9_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
505  p7, p8) \
506  P9
507 #define GMOCK_INTERNAL_COUNT_AND_10_VALUE_PARAMS(p0, p1, p2, p3, p4, p5, p6, \
508  p7, p8, p9) \
509  P10
510 
511 // The name of the class template implementing the action template.
512 #define GMOCK_ACTION_CLASS_(name, value_params) \
513  GTEST_CONCAT_TOKEN_(name##Action, GMOCK_INTERNAL_COUNT_##value_params)
514 
515 #define ACTION_TEMPLATE(name, template_params, value_params) \
516  template <GMOCK_INTERNAL_DECL_##template_params \
517  GMOCK_INTERNAL_DECL_TYPE_##value_params> \
518  class GMOCK_ACTION_CLASS_(name, value_params) { \
519  public: \
520  explicit GMOCK_ACTION_CLASS_(name, value_params)( \
521  GMOCK_INTERNAL_DECL_##value_params) \
522  GMOCK_PP_IF(GMOCK_PP_IS_EMPTY(GMOCK_INTERNAL_COUNT_##value_params), \
523  = default; \
524  , \
525  : impl_(std::make_shared<gmock_Impl>( \
526  GMOCK_INTERNAL_LIST_##value_params)){}) \
527  GMOCK_ACTION_CLASS_(name, value_params)(const GMOCK_ACTION_CLASS_( \
528  name, value_params) &) noexcept GMOCK_INTERNAL_DEFN_COPY_ \
529  ##value_params GMOCK_ACTION_CLASS_(name, value_params)( \
530  GMOCK_ACTION_CLASS_(name, value_params) &&) noexcept \
531  GMOCK_INTERNAL_DEFN_COPY_##value_params template <typename F> \
532  operator ::testing::Action<F>() const { \
533  return GMOCK_PP_IF( \
534  GMOCK_PP_IS_EMPTY(GMOCK_INTERNAL_COUNT_##value_params), \
535  (::testing::internal::MakeAction<F, gmock_Impl>()), \
536  (::testing::internal::MakeAction<F>(impl_))); \
537  } \
538  \
539  private: \
540  class gmock_Impl { \
541  public: \
542  explicit gmock_Impl GMOCK_INTERNAL_INIT_##value_params {} \
543  template <typename function_type, typename return_type, \
544  typename args_type, GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
545  return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
546  GMOCK_INTERNAL_DEFN_##value_params \
547  }; \
548  GMOCK_PP_IF(GMOCK_PP_IS_EMPTY(GMOCK_INTERNAL_COUNT_##value_params), , \
549  std::shared_ptr<const gmock_Impl> impl_;) \
550  }; \
551  template <GMOCK_INTERNAL_DECL_##template_params \
552  GMOCK_INTERNAL_DECL_TYPE_##value_params> \
553  GMOCK_ACTION_CLASS_( \
554  name, value_params)<GMOCK_INTERNAL_LIST_##template_params \
555  GMOCK_INTERNAL_LIST_TYPE_##value_params> \
556  name(GMOCK_INTERNAL_DECL_##value_params) GTEST_MUST_USE_RESULT_; \
557  template <GMOCK_INTERNAL_DECL_##template_params \
558  GMOCK_INTERNAL_DECL_TYPE_##value_params> \
559  inline GMOCK_ACTION_CLASS_( \
560  name, value_params)<GMOCK_INTERNAL_LIST_##template_params \
561  GMOCK_INTERNAL_LIST_TYPE_##value_params> \
562  name(GMOCK_INTERNAL_DECL_##value_params) { \
563  return GMOCK_ACTION_CLASS_( \
564  name, value_params)<GMOCK_INTERNAL_LIST_##template_params \
565  GMOCK_INTERNAL_LIST_TYPE_##value_params>( \
566  GMOCK_INTERNAL_LIST_##value_params); \
567  } \
568  template <GMOCK_INTERNAL_DECL_##template_params \
569  GMOCK_INTERNAL_DECL_TYPE_##value_params> \
570  template <typename function_type, typename return_type, typename args_type, \
571  GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
572  return_type GMOCK_ACTION_CLASS_( \
573  name, value_params)<GMOCK_INTERNAL_LIST_##template_params \
574  GMOCK_INTERNAL_LIST_TYPE_##value_params>:: \
575  gmock_Impl::gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) \
576  const
577 
578 namespace testing {
579 
580 // The ACTION*() macros trigger warning C4100 (unreferenced formal
581 // parameter) in MSVC with -W4. Unfortunately they cannot be fixed in
582 // the macro definition, as the warnings are generated when the macro
583 // is expanded and macro expansion cannot contain #pragma. Therefore
584 // we suppress them here.
585 #ifdef _MSC_VER
586 #pragma warning(push)
587 #pragma warning(disable : 4100)
588 #endif
589 
590 namespace internal {
591 
592 // internal::InvokeArgument - a helper for InvokeArgument action.
593 // The basic overloads are provided here for generic functors.
594 // Overloads for other custom-callables are provided in the
595 // internal/custom/gmock-generated-actions.h header.
596 template <typename F, typename... Args>
597 auto InvokeArgument(F f, Args... args) -> decltype(f(args...)) {
598  return f(args...);
599 }
600 
601 template <std::size_t index, typename... Params>
602 struct InvokeArgumentAction {
603  template <typename... Args,
604  typename = typename std::enable_if<(index < sizeof...(Args))>::type>
605  auto operator()(Args&&... args) const -> decltype(internal::InvokeArgument(
606  std::get<index>(std::forward_as_tuple(std::forward<Args>(args)...)),
607  std::declval<const Params&>()...)) {
608  internal::FlatTuple<Args&&...> args_tuple(FlatTupleConstructTag{},
609  std::forward<Args>(args)...);
610  return params.Apply([&](const Params&... unpacked_params) {
611  auto&& callable = args_tuple.template Get<index>();
612  return internal::InvokeArgument(
613  std::forward<decltype(callable)>(callable), unpacked_params...);
614  });
615  }
616 
617  internal::FlatTuple<Params...> params;
618 };
619 
620 } // namespace internal
621 
622 // The InvokeArgument<N>(a1, a2, ..., a_k) action invokes the N-th
623 // (0-based) argument, which must be a k-ary callable, of the mock
624 // function, with arguments a1, a2, ..., a_k.
625 //
626 // Notes:
627 //
628 // 1. The arguments are passed by value by default. If you need to
629 // pass an argument by reference, wrap it inside std::ref(). For
630 // example,
631 //
632 // InvokeArgument<1>(5, string("Hello"), std::ref(foo))
633 //
634 // passes 5 and string("Hello") by value, and passes foo by
635 // reference.
636 //
637 // 2. If the callable takes an argument by reference but std::ref() is
638 // not used, it will receive the reference to a copy of the value,
639 // instead of the original value. For example, when the 0-th
640 // argument of the mock function takes a const string&, the action
641 //
642 // InvokeArgument<0>(string("Hello"))
643 //
644 // makes a copy of the temporary string("Hello") object and passes a
645 // reference of the copy, instead of the original temporary object,
646 // to the callable. This makes it easy for a user to define an
647 // InvokeArgument action from temporary values and have it performed
648 // later.
649 template <std::size_t index, typename... Params>
650 internal::InvokeArgumentAction<index, typename std::decay<Params>::type...>
651 InvokeArgument(Params&&... params) {
652  return {internal::FlatTuple<typename std::decay<Params>::type...>(
653  internal::FlatTupleConstructTag{}, std::forward<Params>(params)...)};
654 }
655 
656 #ifdef _MSC_VER
657 #pragma warning(pop)
658 #endif
659 
660 } // namespace testing
661 
662 #endif // GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
index
viol index
Definition: numerical_recipes.cpp:5197
type
viol type
Definition: numerical_recipes.cpp:5198
f
double * f
Definition: numerical_recipes.cpp:4414
testing::internal::InvokeArgumentAction::params
internal::FlatTuple< Params... > params
Definition: gmock-more-actions.h:617
testing::internal::InvokeArgumentAction::operator()
auto operator()(Args &&... args) const -> decltype(internal::InvokeArgument(std::get< index >(std::forward_as_tuple(std::forward< Args >(args)...)), std::declval< const Params &>()...))
Definition: gmock-more-actions.h:605
testing::internal::InvokeArgument
auto InvokeArgument(F f, Args... args) -> decltype(f(args...))
Definition: gmock-more-actions.h:597
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