1// RUN: %check_clang_tidy --match-partial-fixes %s modernize-use-equals-default %t -- -- -fno-delayed-template-parsing -fexceptions
2
3// Out of line definition.
4class OL {
5public:
6 OL();
7 ~OL();
8};
9
10OL::OL() {};
11// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use '= default' to define a trivial default constructor [modernize-use-equals-default]
12// CHECK-FIXES: OL::OL() = default;
13OL::~OL() {}
14// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use '= default' to define a trivial destructor [modernize-use-equals-default]
15// CHECK-FIXES: OL::~OL() = default;
16
17// Inline definitions.
18class IL {
19public:
20 IL() {} ; // Note embedded tab on this line
21 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
22 // CHECK-FIXES: IL() = default ; // Note embedded tab on this line
23 ~IL() {}
24 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
25 // CHECK-FIXES: ~IL() = default;
26};
27
28// Non-empty body.
29void f();
30class NE {
31public:
32 NE() { f(); }
33 ~NE() { f(); }
34};
35
36// Skip unions.
37union NU {
38 NU() {}
39 // CHECK-FIXES: NU() {}
40 ~NU() {}
41 // CHECK-FIXES: ~NU() {}
42 NE Field;
43};
44
45// Skip unions with out-of-line constructor/destructor.
46union NUO {
47 NUO();
48 ~NUO();
49 NE Field;
50};
51
52NUO::NUO() {}
53// CHECK-FIXES: NUO::NUO() {}
54NUO::~NUO() {}
55// CHECK-FIXES: NUO::~NUO() {}
56
57// Skip structs/classes containing anonymous unions.
58struct SU {
59 SU() {}
60 // CHECK-FIXES: SU() {}
61 ~SU() {}
62 // CHECK-FIXES: ~SU() {}
63 union {
64 NE Field;
65 };
66};
67
68// Skip variadic constructors.
69struct VA {
70 VA(...) {}
71};
72
73// Skip template constructors.
74struct TC {
75 template <unsigned U>
76 TC() {}
77
78 template <unsigned U>
79 TC(const TC &) {}
80
81 template <unsigned U>
82 TC& operator = (const TC &) { return *this; }
83};
84
85// Initializer or arguments.
86class IA {
87public:
88 // Constructor with initializer.
89 IA() : Field(5) {}
90 // Constructor with arguments.
91 IA(int Arg1, int Arg2) {}
92 int Field;
93};
94
95// Default member initializer
96class DMI {
97public:
98 DMI() {} // Comment before semi-colon on next line
99 ;
100 // CHECK-MESSAGES: :[[@LINE-2]]:3: warning: use '= default'
101 // CHECK-FIXES: DMI() = default // Comment before semi-colon on next line
102 // CHECK-FIXES-NEXT: ;
103 int Field = 5;
104};
105
106// Class member
107class CM {
108public:
109 CM() {} /* Comments */ /* before */ /* semicolon */;
110 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
111 // CHECK-FIXES: CM() = default /* Comments */ /* before */ /* semicolon */;
112 OL o;
113};
114
115// Private constructor/destructor.
116class Priv {
117 Priv();
118 ~Priv() {}
119 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
120 // CHECK-FIXES: ~Priv() = default;
121};
122
123Priv::Priv() {}
124// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: use '= default'
125// CHECK-FIXES: Priv::Priv() = default;
126
127struct SemiColon {
128 SemiColon() {};
129 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
130 // CHECK-FIXES: SemiColon() = default;{{$}}
131};
132
133struct SemiColonOutOfLine {
134 SemiColonOutOfLine();
135};
136
137SemiColonOutOfLine::SemiColonOutOfLine() {};
138// CHECK-MESSAGES: :[[@LINE-1]]:21: warning: use '= default'
139// CHECK-FIXES: SemiColonOutOfLine::SemiColonOutOfLine() = default;{{$}}
140
141// struct.
142struct ST {
143 ST() {}
144 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
145 // CHECK-FIXES: ST() = default;{{$}}
146 ~ST() {}
147 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
148 // CHECK-FIXES: ST() = default;{{$}}
149};
150
151// Deleted constructor/destructor.
152class Del {
153public:
154 Del() = delete;
155 ~Del() = delete;
156};
157
158// Do not remove other keywords.
159class KW {
160public:
161 explicit KW() {}
162 // CHECK-MESSAGES: :[[@LINE-1]]:12: warning: use '= default'
163 // CHECK-FIXES: explicit KW() = default;
164 virtual ~KW() {}
165 // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: use '= default'
166 // CHECK-FIXES: virtual ~KW() = default;
167};
168
169// Nested class.
170struct N {
171 struct NN {
172 NN() {}
173 // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use '= default'
174 // CHECK-FIXES: NN() = default;
175 ~NN() {}
176 // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: use '= default'
177 // CHECK-FIXES: ~NN() = default;
178 };
179 int Int;
180};
181
182// Class template.
183template <class T>
184class Temp {
185public:
186 Temp() {}
187 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
188 // CHECK-FIXES: Temp() = default;
189 ~Temp() {}
190 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
191 // CHECK-FIXES: ~Temp() = default;
192};
193
194// Class template out of line with explicit instantiation.
195template <class T>
196class TempODef {
197public:
198 TempODef();
199 ~TempODef();
200};
201
202template <class T>
203TempODef<T>::TempODef() {}
204// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: use '= default'
205// CHECK-FIXES: TempODef<T>::TempODef() = default;
206template <class T>
207TempODef<T>::~TempODef() {}
208// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: use '= default'
209// CHECK-FIXES: TempODef<T>::~TempODef() = default;
210
211template class TempODef<int>;
212template class TempODef<double>;
213
214// Non user-provided constructor/destructor.
215struct Imp {
216 int Int;
217};
218void g() {
219 Imp *PtrImp = new Imp();
220 PtrImp->~Imp();
221 delete PtrImp;
222}
223
224// Already using default.
225struct IDef {
226 IDef() = default;
227 ~IDef() = default;
228};
229struct ODef {
230 ODef();
231 ~ODef();
232};
233ODef::ODef() = default;
234ODef::~ODef() = default;
235
236// Delegating constructor and overriden destructor.
237struct DC : KW {
238 DC() : KW() {}
239 ~DC() override {}
240 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
241 // CHECK-FIXES: ~DC() override = default;{{$}}
242};
243
244struct OverrideWithSemiColon : KW {
245 ~OverrideWithSemiColon() override {};
246 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= default'
247 // CHECK-FIXES: ~OverrideWithSemiColon() override = default;{{$}}
248};
249
250struct Comments {
251 Comments() {
252 // Don't erase comments inside the body.
253 }
254 // CHECK-MESSAGES: :[[@LINE-3]]:3: warning: use '= default'
255 ~Comments() {
256 // Don't erase comments inside the body.
257 }
258 // CHECK-MESSAGES: :[[@LINE-3]]:3: warning: use '= default'
259};
260
261// Try-catch.
262struct ITC {
263 ITC() try {} catch(...) {}
264 ~ITC() try {} catch(...) {}
265};
266
267struct OTC {
268 OTC();
269 ~OTC();
270};
271OTC::OTC() try {} catch(...) {}
272OTC::~OTC() try {} catch(...) {}
273
274#define STRUCT_WITH_DEFAULT(_base, _type) \
275 struct _type { \
276 _type() {} \
277 _base value; \
278 };
279
280STRUCT_WITH_DEFAULT(unsigned char, InMacro)
281
282#define ZERO_VALUE 0
283struct PreprocesorDependentTest
284{
285 void something();
286
287 PreprocesorDependentTest() {
288#if ZERO_VALUE
289 something();
290#endif
291 }
292
293 ~PreprocesorDependentTest() {
294#if ZERO_VALUE
295 something();
296#endif
297 }
298};
299

source code of clang-tools-extra/test/clang-tidy/checkers/modernize/use-equals-default.cpp