1 //== unittests/ASTMatchers/ASTMatchersNodeTest.cpp - AST matcher unit tests ==//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "ASTMatchersTest.h"
10 #include "clang/AST/PrettyPrinter.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 #include "clang/ASTMatchers/ASTMatchers.h"
13 #include "clang/Tooling/Tooling.h"
14 #include "llvm/ADT/Triple.h"
15 #include "llvm/Support/Host.h"
16 #include "gtest/gtest.h"
17
18 namespace clang {
19 namespace ast_matchers {
20
TEST_P(ASTMatchersTest,Decl_CXX)21 TEST_P(ASTMatchersTest, Decl_CXX) {
22 if (!GetParam().isCXX()) {
23 // FIXME: Add a test for `decl()` that does not depend on C++.
24 return;
25 }
26 EXPECT_TRUE(notMatches("", decl(usingDecl())));
27 EXPECT_TRUE(
28 matches("namespace x { class X {}; } using x::X;", decl(usingDecl())));
29 }
30
TEST_P(ASTMatchersTest,NameableDeclaration_MatchesVariousDecls)31 TEST_P(ASTMatchersTest, NameableDeclaration_MatchesVariousDecls) {
32 DeclarationMatcher NamedX = namedDecl(hasName("X"));
33 EXPECT_TRUE(matches("typedef int X;", NamedX));
34 EXPECT_TRUE(matches("int X;", NamedX));
35 EXPECT_TRUE(matches("void foo() { int X; }", NamedX));
36 EXPECT_TRUE(matches("enum X { A, B, C };", NamedX));
37
38 EXPECT_TRUE(notMatches("#define X 1", NamedX));
39 }
40
TEST_P(ASTMatchersTest,NamedDecl_CXX)41 TEST_P(ASTMatchersTest, NamedDecl_CXX) {
42 if (!GetParam().isCXX()) {
43 return;
44 }
45 DeclarationMatcher NamedX = namedDecl(hasName("X"));
46 EXPECT_TRUE(matches("class foo { virtual void X(); };", NamedX));
47 EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", NamedX));
48 EXPECT_TRUE(matches("namespace X { }", NamedX));
49 }
50
TEST_P(ASTMatchersTest,MatchesNameRE)51 TEST_P(ASTMatchersTest, MatchesNameRE) {
52 DeclarationMatcher NamedX = namedDecl(matchesName("::X"));
53 EXPECT_TRUE(matches("typedef int Xa;", NamedX));
54 EXPECT_TRUE(matches("int Xb;", NamedX));
55 EXPECT_TRUE(matches("void foo() { int Xgh; }", NamedX));
56 EXPECT_TRUE(matches("enum X { A, B, C };", NamedX));
57
58 EXPECT_TRUE(notMatches("#define Xkl 1", NamedX));
59
60 DeclarationMatcher StartsWithNo = namedDecl(matchesName("::no"));
61 EXPECT_TRUE(matches("int no_foo;", StartsWithNo));
62
63 DeclarationMatcher Abc = namedDecl(matchesName("a.*b.*c"));
64 EXPECT_TRUE(matches("int abc;", Abc));
65 EXPECT_TRUE(matches("int aFOObBARc;", Abc));
66 EXPECT_TRUE(notMatches("int cab;", Abc));
67 EXPECT_TRUE(matches("int cabc;", Abc));
68
69 DeclarationMatcher StartsWithK = namedDecl(matchesName(":k[^:]*$"));
70 EXPECT_TRUE(matches("int k;", StartsWithK));
71 EXPECT_TRUE(matches("int kAbc;", StartsWithK));
72 }
73
TEST_P(ASTMatchersTest,MatchesNameRE_CXX)74 TEST_P(ASTMatchersTest, MatchesNameRE_CXX) {
75 if (!GetParam().isCXX()) {
76 return;
77 }
78 DeclarationMatcher NamedX = namedDecl(matchesName("::X"));
79 EXPECT_TRUE(matches("class foo { virtual void Xc(); };", NamedX));
80 EXPECT_TRUE(matches("void foo() try { } catch(int Xdef) { }", NamedX));
81 EXPECT_TRUE(matches("namespace Xij { }", NamedX));
82
83 DeclarationMatcher StartsWithNo = namedDecl(matchesName("::no"));
84 EXPECT_TRUE(matches("class foo { virtual void nobody(); };", StartsWithNo));
85
86 DeclarationMatcher StartsWithK = namedDecl(matchesName(":k[^:]*$"));
87 EXPECT_TRUE(matches("namespace x { int kTest; }", StartsWithK));
88 EXPECT_TRUE(matches("class C { int k; };", StartsWithK));
89 EXPECT_TRUE(notMatches("class C { int ckc; };", StartsWithK));
90 EXPECT_TRUE(notMatches("int K;", StartsWithK));
91
92 DeclarationMatcher StartsWithKIgnoreCase =
93 namedDecl(matchesName(":k[^:]*$", llvm::Regex::IgnoreCase));
94 EXPECT_TRUE(matches("int k;", StartsWithKIgnoreCase));
95 EXPECT_TRUE(matches("int K;", StartsWithKIgnoreCase));
96 }
97
TEST_P(ASTMatchersTest,DeclarationMatcher_MatchClass)98 TEST_P(ASTMatchersTest, DeclarationMatcher_MatchClass) {
99 if (!GetParam().isCXX()) {
100 return;
101 }
102
103 DeclarationMatcher ClassX = recordDecl(recordDecl(hasName("X")));
104 EXPECT_TRUE(matches("class X;", ClassX));
105 EXPECT_TRUE(matches("class X {};", ClassX));
106 EXPECT_TRUE(matches("template<class T> class X {};", ClassX));
107 EXPECT_TRUE(notMatches("", ClassX));
108 }
109
TEST_P(ASTMatchersTest,TranslationUnitDecl)110 TEST_P(ASTMatchersTest, TranslationUnitDecl) {
111 if (!GetParam().isCXX()) {
112 // FIXME: Add a test for `translationUnitDecl()` that does not depend on
113 // C++.
114 return;
115 }
116 StringRef Code = "int MyVar1;\n"
117 "namespace NameSpace {\n"
118 "int MyVar2;\n"
119 "} // namespace NameSpace\n";
120 EXPECT_TRUE(matches(
121 Code, varDecl(hasName("MyVar1"), hasDeclContext(translationUnitDecl()))));
122 EXPECT_FALSE(matches(
123 Code, varDecl(hasName("MyVar2"), hasDeclContext(translationUnitDecl()))));
124 EXPECT_TRUE(matches(
125 Code,
126 varDecl(hasName("MyVar2"),
127 hasDeclContext(decl(hasDeclContext(translationUnitDecl()))))));
128 }
129
TEST_P(ASTMatchersTest,LinkageSpecDecl)130 TEST_P(ASTMatchersTest, LinkageSpecDecl) {
131 if (!GetParam().isCXX()) {
132 return;
133 }
134 EXPECT_TRUE(matches("extern \"C\" { void foo() {}; }", linkageSpecDecl()));
135 EXPECT_TRUE(notMatches("void foo() {};", linkageSpecDecl()));
136 }
137
TEST_P(ASTMatchersTest,ClassTemplateDecl_DoesNotMatchClass)138 TEST_P(ASTMatchersTest, ClassTemplateDecl_DoesNotMatchClass) {
139 if (!GetParam().isCXX()) {
140 return;
141 }
142 DeclarationMatcher ClassX = classTemplateDecl(hasName("X"));
143 EXPECT_TRUE(notMatches("class X;", ClassX));
144 EXPECT_TRUE(notMatches("class X {};", ClassX));
145 }
146
TEST_P(ASTMatchersTest,ClassTemplateDecl_MatchesClassTemplate)147 TEST_P(ASTMatchersTest, ClassTemplateDecl_MatchesClassTemplate) {
148 if (!GetParam().isCXX()) {
149 return;
150 }
151 DeclarationMatcher ClassX = classTemplateDecl(hasName("X"));
152 EXPECT_TRUE(matches("template<typename T> class X {};", ClassX));
153 EXPECT_TRUE(matches("class Z { template<class T> class X {}; };", ClassX));
154 }
155
TEST_P(ASTMatchersTest,ClassTemplateDecl_DoesNotMatchClassTemplateExplicitSpecialization)156 TEST_P(ASTMatchersTest,
157 ClassTemplateDecl_DoesNotMatchClassTemplateExplicitSpecialization) {
158 if (!GetParam().isCXX()) {
159 return;
160 }
161 EXPECT_TRUE(notMatches(
162 "template<typename T> class X { };"
163 "template<> class X<int> { int a; };",
164 classTemplateDecl(hasName("X"), hasDescendant(fieldDecl(hasName("a"))))));
165 }
166
TEST_P(ASTMatchersTest,ClassTemplateDecl_DoesNotMatchClassTemplatePartialSpecialization)167 TEST_P(ASTMatchersTest,
168 ClassTemplateDecl_DoesNotMatchClassTemplatePartialSpecialization) {
169 if (!GetParam().isCXX()) {
170 return;
171 }
172 EXPECT_TRUE(notMatches(
173 "template<typename T, typename U> class X { };"
174 "template<typename T> class X<T, int> { int a; };",
175 classTemplateDecl(hasName("X"), hasDescendant(fieldDecl(hasName("a"))))));
176 }
177
TEST(ASTMatchersTestCUDA,CUDAKernelCallExpr)178 TEST(ASTMatchersTestCUDA, CUDAKernelCallExpr) {
179 EXPECT_TRUE(matchesWithCuda("__global__ void f() { }"
180 "void g() { f<<<1, 2>>>(); }",
181 cudaKernelCallExpr()));
182 EXPECT_TRUE(notMatchesWithCuda("void f() {}", cudaKernelCallExpr()));
183 }
184
TEST(ASTMatchersTestCUDA,HasAttrCUDA)185 TEST(ASTMatchersTestCUDA, HasAttrCUDA) {
186 EXPECT_TRUE(matchesWithCuda("__attribute__((device)) void f() {}",
187 hasAttr(clang::attr::CUDADevice)));
188 EXPECT_FALSE(notMatchesWithCuda("__attribute__((global)) void f() {}",
189 hasAttr(clang::attr::CUDAGlobal)));
190 }
191
TEST_P(ASTMatchersTest,ValueDecl)192 TEST_P(ASTMatchersTest, ValueDecl) {
193 if (!GetParam().isCXX()) {
194 // FIXME: Fix this test in non-C++ language modes.
195 return;
196 }
197 EXPECT_TRUE(matches("enum EnumType { EnumValue };",
198 valueDecl(hasType(asString("enum EnumType")))));
199 EXPECT_TRUE(matches("void FunctionDecl();",
200 valueDecl(hasType(asString("void (void)")))));
201 }
202
TEST_P(ASTMatchersTest,FriendDecl)203 TEST_P(ASTMatchersTest, FriendDecl) {
204 if (!GetParam().isCXX()) {
205 return;
206 }
207 EXPECT_TRUE(matches("class Y { friend class X; };",
208 friendDecl(hasType(asString("class X")))));
209 EXPECT_TRUE(matches("class Y { friend class X; };",
210 friendDecl(hasType(recordDecl(hasName("X"))))));
211
212 EXPECT_TRUE(matches("class Y { friend void f(); };",
213 functionDecl(hasName("f"), hasParent(friendDecl()))));
214 }
215
TEST_P(ASTMatchersTest,EnumDecl_DoesNotMatchClasses)216 TEST_P(ASTMatchersTest, EnumDecl_DoesNotMatchClasses) {
217 if (!GetParam().isCXX()) {
218 return;
219 }
220 EXPECT_TRUE(notMatches("class X {};", enumDecl(hasName("X"))));
221 }
222
TEST_P(ASTMatchersTest,EnumDecl_MatchesEnums)223 TEST_P(ASTMatchersTest, EnumDecl_MatchesEnums) {
224 if (!GetParam().isCXX()) {
225 // FIXME: Fix this test in non-C++ language modes.
226 return;
227 }
228 EXPECT_TRUE(matches("enum X {};", enumDecl(hasName("X"))));
229 }
230
TEST_P(ASTMatchersTest,EnumConstantDecl)231 TEST_P(ASTMatchersTest, EnumConstantDecl) {
232 if (!GetParam().isCXX()) {
233 // FIXME: Fix this test in non-C++ language modes.
234 return;
235 }
236 DeclarationMatcher Matcher = enumConstantDecl(hasName("A"));
237 EXPECT_TRUE(matches("enum X{ A };", Matcher));
238 EXPECT_TRUE(notMatches("enum X{ B };", Matcher));
239 EXPECT_TRUE(notMatches("enum X {};", Matcher));
240 }
241
TEST_P(ASTMatchersTest,TagDecl)242 TEST_P(ASTMatchersTest, TagDecl) {
243 if (!GetParam().isCXX()) {
244 // FIXME: Fix this test in non-C++ language modes.
245 return;
246 }
247 EXPECT_TRUE(matches("struct X {};", tagDecl(hasName("X"))));
248 EXPECT_TRUE(matches("union U {};", tagDecl(hasName("U"))));
249 EXPECT_TRUE(matches("enum E {};", tagDecl(hasName("E"))));
250 }
251
TEST_P(ASTMatchersTest,TagDecl_CXX)252 TEST_P(ASTMatchersTest, TagDecl_CXX) {
253 if (!GetParam().isCXX()) {
254 return;
255 }
256 EXPECT_TRUE(matches("class C {};", tagDecl(hasName("C"))));
257 }
258
TEST_P(ASTMatchersTest,UnresolvedLookupExpr)259 TEST_P(ASTMatchersTest, UnresolvedLookupExpr) {
260 if (!GetParam().isCXX() || GetParam().hasDelayedTemplateParsing()) {
261 // FIXME: Fix this test to work with delayed template parsing.
262 return;
263 }
264
265 EXPECT_TRUE(matches("template<typename T>"
266 "T foo() { T a; return a; }"
267 "template<typename T>"
268 "void bar() {"
269 " foo<T>();"
270 "}",
271 unresolvedLookupExpr()));
272 }
273
TEST_P(ASTMatchersTest,UsesADL)274 TEST_P(ASTMatchersTest, UsesADL) {
275 if (!GetParam().isCXX()) {
276 return;
277 }
278
279 StatementMatcher ADLMatch = callExpr(usesADL());
280 StatementMatcher ADLMatchOper = cxxOperatorCallExpr(usesADL());
281 StringRef NS_Str = R"cpp(
282 namespace NS {
283 struct X {};
284 void f(X);
285 void operator+(X, X);
286 }
287 struct MyX {};
288 void f(...);
289 void operator+(MyX, MyX);
290 )cpp";
291
292 auto MkStr = [&](StringRef Body) {
293 return (NS_Str + "void test_fn() { " + Body + " }").str();
294 };
295
296 EXPECT_TRUE(matches(MkStr("NS::X x; f(x);"), ADLMatch));
297 EXPECT_TRUE(notMatches(MkStr("NS::X x; NS::f(x);"), ADLMatch));
298 EXPECT_TRUE(notMatches(MkStr("MyX x; f(x);"), ADLMatch));
299 EXPECT_TRUE(notMatches(MkStr("NS::X x; using NS::f; f(x);"), ADLMatch));
300
301 // Operator call expressions
302 EXPECT_TRUE(matches(MkStr("NS::X x; x + x;"), ADLMatch));
303 EXPECT_TRUE(matches(MkStr("NS::X x; x + x;"), ADLMatchOper));
304 EXPECT_TRUE(notMatches(MkStr("MyX x; x + x;"), ADLMatch));
305 EXPECT_TRUE(notMatches(MkStr("MyX x; x + x;"), ADLMatchOper));
306 EXPECT_TRUE(matches(MkStr("NS::X x; operator+(x, x);"), ADLMatch));
307 EXPECT_TRUE(notMatches(MkStr("NS::X x; NS::operator+(x, x);"), ADLMatch));
308 }
309
TEST_P(ASTMatchersTest,CallExpr_CXX)310 TEST_P(ASTMatchersTest, CallExpr_CXX) {
311 if (!GetParam().isCXX()) {
312 // FIXME: Add a test for `callExpr()` that does not depend on C++.
313 return;
314 }
315 // FIXME: Do we want to overload Call() to directly take
316 // Matcher<Decl>, too?
317 StatementMatcher MethodX =
318 callExpr(hasDeclaration(cxxMethodDecl(hasName("x"))));
319
320 EXPECT_TRUE(matches("class Y { void x() { x(); } };", MethodX));
321 EXPECT_TRUE(notMatches("class Y { void x() {} };", MethodX));
322
323 StatementMatcher MethodOnY =
324 cxxMemberCallExpr(on(hasType(recordDecl(hasName("Y")))));
325
326 EXPECT_TRUE(matches("class Y { public: void x(); }; void z() { Y y; y.x(); }",
327 MethodOnY));
328 EXPECT_TRUE(matches("class Y { public: void x(); }; void z(Y &y) { y.x(); }",
329 MethodOnY));
330 EXPECT_TRUE(notMatches(
331 "class Y { public: void x(); }; void z(Y *&y) { y->x(); }", MethodOnY));
332 EXPECT_TRUE(notMatches(
333 "class Y { public: void x(); }; void z(Y y[]) { y->x(); }", MethodOnY));
334 EXPECT_TRUE(notMatches(
335 "class Y { public: void x(); }; void z() { Y *y; y->x(); }", MethodOnY));
336
337 StatementMatcher MethodOnYPointer =
338 cxxMemberCallExpr(on(hasType(pointsTo(recordDecl(hasName("Y"))))));
339
340 EXPECT_TRUE(
341 matches("class Y { public: void x(); }; void z() { Y *y; y->x(); }",
342 MethodOnYPointer));
343 EXPECT_TRUE(
344 matches("class Y { public: void x(); }; void z(Y *&y) { y->x(); }",
345 MethodOnYPointer));
346 EXPECT_TRUE(
347 matches("class Y { public: void x(); }; void z(Y y[]) { y->x(); }",
348 MethodOnYPointer));
349 EXPECT_TRUE(
350 notMatches("class Y { public: void x(); }; void z() { Y y; y.x(); }",
351 MethodOnYPointer));
352 EXPECT_TRUE(
353 notMatches("class Y { public: void x(); }; void z(Y &y) { y.x(); }",
354 MethodOnYPointer));
355 }
356
TEST_P(ASTMatchersTest,LambdaExpr)357 TEST_P(ASTMatchersTest, LambdaExpr) {
358 if (!GetParam().isCXX11OrLater()) {
359 return;
360 }
361 EXPECT_TRUE(matches("auto f = [] (int i) { return i; };", lambdaExpr()));
362 }
363
TEST_P(ASTMatchersTest,CXXForRangeStmt)364 TEST_P(ASTMatchersTest, CXXForRangeStmt) {
365 EXPECT_TRUE(
366 notMatches("void f() { for (int i; i<5; ++i); }", cxxForRangeStmt()));
367 }
368
TEST_P(ASTMatchersTest,CXXForRangeStmt_CXX11)369 TEST_P(ASTMatchersTest, CXXForRangeStmt_CXX11) {
370 if (!GetParam().isCXX11OrLater()) {
371 return;
372 }
373 EXPECT_TRUE(matches("int as[] = { 1, 2, 3 };"
374 "void f() { for (auto &a : as); }",
375 cxxForRangeStmt()));
376 }
377
TEST_P(ASTMatchersTest,SubstNonTypeTemplateParmExpr)378 TEST_P(ASTMatchersTest, SubstNonTypeTemplateParmExpr) {
379 if (!GetParam().isCXX()) {
380 return;
381 }
382 EXPECT_FALSE(matches("template<int N>\n"
383 "struct A { static const int n = 0; };\n"
384 "struct B : public A<42> {};",
385 traverse(TK_AsIs, substNonTypeTemplateParmExpr())));
386 EXPECT_TRUE(matches("template<int N>\n"
387 "struct A { static const int n = N; };\n"
388 "struct B : public A<42> {};",
389 traverse(TK_AsIs, substNonTypeTemplateParmExpr())));
390 }
391
TEST_P(ASTMatchersTest,NonTypeTemplateParmDecl)392 TEST_P(ASTMatchersTest, NonTypeTemplateParmDecl) {
393 if (!GetParam().isCXX()) {
394 return;
395 }
396 EXPECT_TRUE(matches("template <int N> void f();",
397 nonTypeTemplateParmDecl(hasName("N"))));
398 EXPECT_TRUE(
399 notMatches("template <typename T> void f();", nonTypeTemplateParmDecl()));
400 }
401
TEST_P(ASTMatchersTest,TemplateTypeParmDecl)402 TEST_P(ASTMatchersTest, TemplateTypeParmDecl) {
403 if (!GetParam().isCXX()) {
404 return;
405 }
406 EXPECT_TRUE(matches("template <typename T> void f();",
407 templateTypeParmDecl(hasName("T"))));
408 EXPECT_TRUE(notMatches("template <int N> void f();", templateTypeParmDecl()));
409 }
410
TEST_P(ASTMatchersTest,TemplateTemplateParmDecl)411 TEST_P(ASTMatchersTest, TemplateTemplateParmDecl) {
412 if (!GetParam().isCXX())
413 return;
414 EXPECT_TRUE(matches("template <template <typename> class Z> void f();",
415 templateTemplateParmDecl(hasName("Z"))));
416 EXPECT_TRUE(notMatches("template <typename, int> void f();",
417 templateTemplateParmDecl()));
418 }
419
TEST_P(ASTMatchersTest,UserDefinedLiteral)420 TEST_P(ASTMatchersTest, UserDefinedLiteral) {
421 if (!GetParam().isCXX11OrLater()) {
422 return;
423 }
424 EXPECT_TRUE(matches("constexpr char operator \"\" _inc (const char i) {"
425 " return i + 1;"
426 "}"
427 "char c = 'a'_inc;",
428 userDefinedLiteral()));
429 }
430
TEST_P(ASTMatchersTest,FlowControl)431 TEST_P(ASTMatchersTest, FlowControl) {
432 EXPECT_TRUE(matches("void f() { while(1) { break; } }", breakStmt()));
433 EXPECT_TRUE(matches("void f() { while(1) { continue; } }", continueStmt()));
434 EXPECT_TRUE(matches("void f() { goto FOO; FOO: ;}", gotoStmt()));
435 EXPECT_TRUE(matches("void f() { goto FOO; FOO: ;}",
436 labelStmt(hasDeclaration(labelDecl(hasName("FOO"))))));
437 EXPECT_TRUE(matches("void f() { FOO: ; void *ptr = &&FOO; goto *ptr; }",
438 addrLabelExpr()));
439 EXPECT_TRUE(matches("void f() { return; }", returnStmt()));
440 }
441
TEST_P(ASTMatchersTest,CXXOperatorCallExpr)442 TEST_P(ASTMatchersTest, CXXOperatorCallExpr) {
443 if (!GetParam().isCXX()) {
444 return;
445 }
446
447 StatementMatcher OpCall = cxxOperatorCallExpr();
448 // Unary operator
449 EXPECT_TRUE(matches("class Y { }; "
450 "bool operator!(Y x) { return false; }; "
451 "Y y; bool c = !y;",
452 OpCall));
453 // No match -- special operators like "new", "delete"
454 // FIXME: operator new takes size_t, for which we need stddef.h, for which
455 // we need to figure out include paths in the test.
456 // EXPECT_TRUE(NotMatches("#include <stddef.h>\n"
457 // "class Y { }; "
458 // "void *operator new(size_t size) { return 0; } "
459 // "Y *y = new Y;", OpCall));
460 EXPECT_TRUE(notMatches("class Y { }; "
461 "void operator delete(void *p) { } "
462 "void a() {Y *y = new Y; delete y;}",
463 OpCall));
464 // Binary operator
465 EXPECT_TRUE(matches("class Y { }; "
466 "bool operator&&(Y x, Y y) { return true; }; "
467 "Y a; Y b; bool c = a && b;",
468 OpCall));
469 // No match -- normal operator, not an overloaded one.
470 EXPECT_TRUE(notMatches("bool x = true, y = true; bool t = x && y;", OpCall));
471 EXPECT_TRUE(notMatches("int t = 5 << 2;", OpCall));
472 }
473
TEST_P(ASTMatchersTest,ThisPointerType)474 TEST_P(ASTMatchersTest, ThisPointerType) {
475 if (!GetParam().isCXX()) {
476 return;
477 }
478
479 StatementMatcher MethodOnY = traverse(
480 TK_AsIs, cxxMemberCallExpr(thisPointerType(recordDecl(hasName("Y")))));
481
482 EXPECT_TRUE(matches("class Y { public: void x(); }; void z() { Y y; y.x(); }",
483 MethodOnY));
484 EXPECT_TRUE(matches("class Y { public: void x(); }; void z(Y &y) { y.x(); }",
485 MethodOnY));
486 EXPECT_TRUE(matches(
487 "class Y { public: void x(); }; void z(Y *&y) { y->x(); }", MethodOnY));
488 EXPECT_TRUE(matches(
489 "class Y { public: void x(); }; void z(Y y[]) { y->x(); }", MethodOnY));
490 EXPECT_TRUE(matches(
491 "class Y { public: void x(); }; void z() { Y *y; y->x(); }", MethodOnY));
492
493 EXPECT_TRUE(matches("class Y {"
494 " public: virtual void x();"
495 "};"
496 "class X : public Y {"
497 " public: virtual void x();"
498 "};"
499 "void z() { X *x; x->Y::x(); }",
500 MethodOnY));
501 }
502
TEST_P(ASTMatchersTest,DeclRefExpr)503 TEST_P(ASTMatchersTest, DeclRefExpr) {
504 if (!GetParam().isCXX()) {
505 // FIXME: Add a test for `declRefExpr()` that does not depend on C++.
506 return;
507 }
508 StatementMatcher Reference = declRefExpr(to(varDecl(hasInitializer(
509 cxxMemberCallExpr(thisPointerType(recordDecl(hasName("Y"))))))));
510
511 EXPECT_TRUE(matches("class Y {"
512 " public:"
513 " bool x() const;"
514 "};"
515 "void z(const Y &y) {"
516 " bool b = y.x();"
517 " if (b) {}"
518 "}",
519 Reference));
520
521 EXPECT_TRUE(notMatches("class Y {"
522 " public:"
523 " bool x() const;"
524 "};"
525 "void z(const Y &y) {"
526 " bool b = y.x();"
527 "}",
528 Reference));
529 }
530
TEST_P(ASTMatchersTest,CXXMemberCallExpr)531 TEST_P(ASTMatchersTest, CXXMemberCallExpr) {
532 if (!GetParam().isCXX()) {
533 return;
534 }
535 StatementMatcher CallOnVariableY =
536 cxxMemberCallExpr(on(declRefExpr(to(varDecl(hasName("y"))))));
537
538 EXPECT_TRUE(matches("class Y { public: void x() { Y y; y.x(); } };",
539 CallOnVariableY));
540 EXPECT_TRUE(matches("class Y { public: void x() const { Y y; y.x(); } };",
541 CallOnVariableY));
542 EXPECT_TRUE(matches("class Y { public: void x(); };"
543 "class X : public Y { void z() { X y; y.x(); } };",
544 CallOnVariableY));
545 EXPECT_TRUE(matches("class Y { public: void x(); };"
546 "class X : public Y { void z() { X *y; y->x(); } };",
547 CallOnVariableY));
548 EXPECT_TRUE(notMatches(
549 "class Y { public: void x(); };"
550 "class X : public Y { void z() { unsigned long y; ((X*)y)->x(); } };",
551 CallOnVariableY));
552 }
553
TEST_P(ASTMatchersTest,UnaryExprOrTypeTraitExpr)554 TEST_P(ASTMatchersTest, UnaryExprOrTypeTraitExpr) {
555 EXPECT_TRUE(
556 matches("void x() { int a = sizeof(a); }", unaryExprOrTypeTraitExpr()));
557 }
558
TEST_P(ASTMatchersTest,AlignOfExpr)559 TEST_P(ASTMatchersTest, AlignOfExpr) {
560 EXPECT_TRUE(
561 notMatches("void x() { int a = sizeof(a); }", alignOfExpr(anything())));
562 // FIXME: Uncomment once alignof is enabled.
563 // EXPECT_TRUE(matches("void x() { int a = alignof(a); }",
564 // unaryExprOrTypeTraitExpr()));
565 // EXPECT_TRUE(notMatches("void x() { int a = alignof(a); }",
566 // sizeOfExpr()));
567 }
568
TEST_P(ASTMatchersTest,MemberExpr_DoesNotMatchClasses)569 TEST_P(ASTMatchersTest, MemberExpr_DoesNotMatchClasses) {
570 if (!GetParam().isCXX()) {
571 return;
572 }
573 EXPECT_TRUE(notMatches("class Y { void x() {} };", memberExpr()));
574 EXPECT_TRUE(notMatches("class Y { void x() {} };", unresolvedMemberExpr()));
575 EXPECT_TRUE(
576 notMatches("class Y { void x() {} };", cxxDependentScopeMemberExpr()));
577 }
578
TEST_P(ASTMatchersTest,MemberExpr_MatchesMemberFunctionCall)579 TEST_P(ASTMatchersTest, MemberExpr_MatchesMemberFunctionCall) {
580 if (!GetParam().isCXX() || GetParam().hasDelayedTemplateParsing()) {
581 // FIXME: Fix this test to work with delayed template parsing.
582 return;
583 }
584 EXPECT_TRUE(matches("class Y { void x() { x(); } };", memberExpr()));
585 EXPECT_TRUE(matches("class Y { template <class T> void x() { x<T>(); } };",
586 unresolvedMemberExpr()));
587 EXPECT_TRUE(matches("template <class T> void x() { T t; t.f(); }",
588 cxxDependentScopeMemberExpr()));
589 }
590
TEST_P(ASTMatchersTest,MemberExpr_MatchesVariable)591 TEST_P(ASTMatchersTest, MemberExpr_MatchesVariable) {
592 if (!GetParam().isCXX() || GetParam().hasDelayedTemplateParsing()) {
593 // FIXME: Fix this test to work with delayed template parsing.
594 return;
595 }
596 EXPECT_TRUE(
597 matches("class Y { void x() { this->y; } int y; };", memberExpr()));
598 EXPECT_TRUE(matches("class Y { void x() { y; } int y; };", memberExpr()));
599 EXPECT_TRUE(
600 matches("class Y { void x() { Y y; y.y; } int y; };", memberExpr()));
601 EXPECT_TRUE(matches("template <class T>"
602 "class X : T { void f() { this->T::v; } };",
603 cxxDependentScopeMemberExpr()));
604 EXPECT_TRUE(matches("template <class T> class X : T { void f() { T::v; } };",
605 cxxDependentScopeMemberExpr()));
606 EXPECT_TRUE(matches("template <class T> void x() { T t; t.v; }",
607 cxxDependentScopeMemberExpr()));
608 }
609
TEST_P(ASTMatchersTest,MemberExpr_MatchesStaticVariable)610 TEST_P(ASTMatchersTest, MemberExpr_MatchesStaticVariable) {
611 if (!GetParam().isCXX()) {
612 return;
613 }
614 EXPECT_TRUE(matches("class Y { void x() { this->y; } static int y; };",
615 memberExpr()));
616 EXPECT_TRUE(
617 notMatches("class Y { void x() { y; } static int y; };", memberExpr()));
618 EXPECT_TRUE(notMatches("class Y { void x() { Y::y; } static int y; };",
619 memberExpr()));
620 }
621
TEST_P(ASTMatchersTest,FunctionDecl)622 TEST_P(ASTMatchersTest, FunctionDecl) {
623 StatementMatcher CallFunctionF = callExpr(callee(functionDecl(hasName("f"))));
624
625 EXPECT_TRUE(matches("void f() { f(); }", CallFunctionF));
626 EXPECT_TRUE(notMatches("void f() { }", CallFunctionF));
627
628 EXPECT_TRUE(notMatches("void f(int);", functionDecl(isVariadic())));
629 EXPECT_TRUE(notMatches("void f();", functionDecl(isVariadic())));
630 EXPECT_TRUE(matches("void f(int, ...);", functionDecl(parameterCountIs(1))));
631 }
632
TEST_P(ASTMatchersTest,FunctionDecl_C)633 TEST_P(ASTMatchersTest, FunctionDecl_C) {
634 if (!GetParam().isC()) {
635 return;
636 }
637 EXPECT_TRUE(notMatches("void f();", functionDecl(isVariadic())));
638 EXPECT_TRUE(matches("void f();", functionDecl(parameterCountIs(0))));
639 }
640
TEST_P(ASTMatchersTest,FunctionDecl_CXX)641 TEST_P(ASTMatchersTest, FunctionDecl_CXX) {
642 if (!GetParam().isCXX()) {
643 return;
644 }
645
646 StatementMatcher CallFunctionF = callExpr(callee(functionDecl(hasName("f"))));
647
648 if (!GetParam().hasDelayedTemplateParsing()) {
649 // FIXME: Fix this test to work with delayed template parsing.
650 // Dependent contexts, but a non-dependent call.
651 EXPECT_TRUE(
652 matches("void f(); template <int N> void g() { f(); }", CallFunctionF));
653 EXPECT_TRUE(
654 matches("void f(); template <int N> struct S { void g() { f(); } };",
655 CallFunctionF));
656 }
657
658 // Depedent calls don't match.
659 EXPECT_TRUE(
660 notMatches("void f(int); template <typename T> void g(T t) { f(t); }",
661 CallFunctionF));
662 EXPECT_TRUE(
663 notMatches("void f(int);"
664 "template <typename T> struct S { void g(T t) { f(t); } };",
665 CallFunctionF));
666
667 EXPECT_TRUE(matches("void f(...);", functionDecl(isVariadic())));
668 EXPECT_TRUE(matches("void f(...);", functionDecl(parameterCountIs(0))));
669 }
670
TEST_P(ASTMatchersTest,FunctionDecl_CXX11)671 TEST_P(ASTMatchersTest, FunctionDecl_CXX11) {
672 if (!GetParam().isCXX11OrLater()) {
673 return;
674 }
675
676 EXPECT_TRUE(notMatches("template <typename... Ts> void f(Ts...);",
677 functionDecl(isVariadic())));
678 }
679
TEST_P(ASTMatchersTest,FunctionTemplateDecl_MatchesFunctionTemplateDeclarations)680 TEST_P(ASTMatchersTest,
681 FunctionTemplateDecl_MatchesFunctionTemplateDeclarations) {
682 if (!GetParam().isCXX()) {
683 return;
684 }
685 EXPECT_TRUE(matches("template <typename T> void f(T t) {}",
686 functionTemplateDecl(hasName("f"))));
687 }
688
TEST_P(ASTMatchersTest,FunctionTemplate_DoesNotMatchFunctionDeclarations)689 TEST_P(ASTMatchersTest, FunctionTemplate_DoesNotMatchFunctionDeclarations) {
690 EXPECT_TRUE(
691 notMatches("void f(double d);", functionTemplateDecl(hasName("f"))));
692 EXPECT_TRUE(
693 notMatches("void f(int t) {}", functionTemplateDecl(hasName("f"))));
694 }
695
TEST_P(ASTMatchersTest,FunctionTemplateDecl_DoesNotMatchFunctionTemplateSpecializations)696 TEST_P(ASTMatchersTest,
697 FunctionTemplateDecl_DoesNotMatchFunctionTemplateSpecializations) {
698 if (!GetParam().isCXX()) {
699 return;
700 }
701 EXPECT_TRUE(notMatches(
702 "void g(); template <typename T> void f(T t) {}"
703 "template <> void f(int t) { g(); }",
704 functionTemplateDecl(hasName("f"), hasDescendant(declRefExpr(to(
705 functionDecl(hasName("g"))))))));
706 }
707
TEST_P(ASTMatchersTest,ClassTemplateSpecializationDecl)708 TEST_P(ASTMatchersTest, ClassTemplateSpecializationDecl) {
709 if (!GetParam().isCXX()) {
710 return;
711 }
712 EXPECT_TRUE(matches("template<typename T> struct A {};"
713 "template<> struct A<int> {};",
714 classTemplateSpecializationDecl()));
715 EXPECT_TRUE(matches("template<typename T> struct A {}; A<int> a;",
716 classTemplateSpecializationDecl()));
717 EXPECT_TRUE(notMatches("template<typename T> struct A {};",
718 classTemplateSpecializationDecl()));
719 }
720
TEST_P(ASTMatchersTest,DeclaratorDecl)721 TEST_P(ASTMatchersTest, DeclaratorDecl) {
722 EXPECT_TRUE(matches("int x;", declaratorDecl()));
723 EXPECT_TRUE(notMatches("struct A {};", declaratorDecl()));
724 }
725
TEST_P(ASTMatchersTest,DeclaratorDecl_CXX)726 TEST_P(ASTMatchersTest, DeclaratorDecl_CXX) {
727 if (!GetParam().isCXX()) {
728 return;
729 }
730 EXPECT_TRUE(notMatches("class A {};", declaratorDecl()));
731 }
732
TEST_P(ASTMatchersTest,ParmVarDecl)733 TEST_P(ASTMatchersTest, ParmVarDecl) {
734 EXPECT_TRUE(matches("void f(int x);", parmVarDecl()));
735 EXPECT_TRUE(notMatches("void f();", parmVarDecl()));
736 }
737
TEST_P(ASTMatchersTest,Matcher_ConstructorCall)738 TEST_P(ASTMatchersTest, Matcher_ConstructorCall) {
739 if (!GetParam().isCXX()) {
740 return;
741 }
742
743 StatementMatcher Constructor = traverse(TK_AsIs, cxxConstructExpr());
744
745 EXPECT_TRUE(
746 matches("class X { public: X(); }; void x() { X x; }", Constructor));
747 EXPECT_TRUE(matches("class X { public: X(); }; void x() { X x = X(); }",
748 Constructor));
749 EXPECT_TRUE(matches("class X { public: X(int); }; void x() { X x = 0; }",
750 Constructor));
751 EXPECT_TRUE(matches("class X {}; void x(int) { X x; }", Constructor));
752 }
753
TEST_P(ASTMatchersTest,Match_ConstructorInitializers)754 TEST_P(ASTMatchersTest, Match_ConstructorInitializers) {
755 if (!GetParam().isCXX()) {
756 return;
757 }
758 EXPECT_TRUE(matches("class C { int i; public: C(int ii) : i(ii) {} };",
759 cxxCtorInitializer(forField(hasName("i")))));
760 }
761
TEST_P(ASTMatchersTest,Matcher_ThisExpr)762 TEST_P(ASTMatchersTest, Matcher_ThisExpr) {
763 if (!GetParam().isCXX()) {
764 return;
765 }
766 EXPECT_TRUE(
767 matches("struct X { int a; int f () { return a; } };", cxxThisExpr()));
768 EXPECT_TRUE(
769 notMatches("struct X { int f () { int a; return a; } };", cxxThisExpr()));
770 }
771
TEST_P(ASTMatchersTest,Matcher_BindTemporaryExpression)772 TEST_P(ASTMatchersTest, Matcher_BindTemporaryExpression) {
773 if (!GetParam().isCXX()) {
774 return;
775 }
776
777 StatementMatcher TempExpression = traverse(TK_AsIs, cxxBindTemporaryExpr());
778
779 StringRef ClassString = "class string { public: string(); ~string(); }; ";
780
781 EXPECT_TRUE(matches(
782 ClassString + "string GetStringByValue();"
783 "void FunctionTakesString(string s);"
784 "void run() { FunctionTakesString(GetStringByValue()); }",
785 TempExpression));
786
787 EXPECT_TRUE(notMatches(ClassString +
788 "string* GetStringPointer(); "
789 "void FunctionTakesStringPtr(string* s);"
790 "void run() {"
791 " string* s = GetStringPointer();"
792 " FunctionTakesStringPtr(GetStringPointer());"
793 " FunctionTakesStringPtr(s);"
794 "}",
795 TempExpression));
796
797 EXPECT_TRUE(notMatches("class no_dtor {};"
798 "no_dtor GetObjByValue();"
799 "void ConsumeObj(no_dtor param);"
800 "void run() { ConsumeObj(GetObjByValue()); }",
801 TempExpression));
802 }
803
TEST_P(ASTMatchersTest,MaterializeTemporaryExpr_MatchesTemporaryCXX11CXX14)804 TEST_P(ASTMatchersTest, MaterializeTemporaryExpr_MatchesTemporaryCXX11CXX14) {
805 if (GetParam().Language != Lang_CXX11 && GetParam().Language != Lang_CXX14) {
806 return;
807 }
808
809 StatementMatcher TempExpression =
810 traverse(TK_AsIs, materializeTemporaryExpr());
811
812 EXPECT_TRUE(matches("class string { public: string(); }; "
813 "string GetStringByValue();"
814 "void FunctionTakesString(string s);"
815 "void run() { FunctionTakesString(GetStringByValue()); }",
816 TempExpression));
817 }
818
TEST_P(ASTMatchersTest,MaterializeTemporaryExpr_MatchesTemporary)819 TEST_P(ASTMatchersTest, MaterializeTemporaryExpr_MatchesTemporary) {
820 if (!GetParam().isCXX()) {
821 return;
822 }
823
824 StringRef ClassString = "class string { public: string(); int length(); }; ";
825 StatementMatcher TempExpression =
826 traverse(TK_AsIs, materializeTemporaryExpr());
827
828 EXPECT_TRUE(notMatches(ClassString +
829 "string* GetStringPointer(); "
830 "void FunctionTakesStringPtr(string* s);"
831 "void run() {"
832 " string* s = GetStringPointer();"
833 " FunctionTakesStringPtr(GetStringPointer());"
834 " FunctionTakesStringPtr(s);"
835 "}",
836 TempExpression));
837
838 EXPECT_TRUE(matches(ClassString +
839 "string GetStringByValue();"
840 "void run() { int k = GetStringByValue().length(); }",
841 TempExpression));
842
843 EXPECT_TRUE(notMatches(ClassString + "string GetStringByValue();"
844 "void run() { GetStringByValue(); }",
845 TempExpression));
846 }
847
TEST_P(ASTMatchersTest,Matcher_NewExpression)848 TEST_P(ASTMatchersTest, Matcher_NewExpression) {
849 if (!GetParam().isCXX()) {
850 return;
851 }
852
853 StatementMatcher New = cxxNewExpr();
854
855 EXPECT_TRUE(matches("class X { public: X(); }; void x() { new X; }", New));
856 EXPECT_TRUE(matches("class X { public: X(); }; void x() { new X(); }", New));
857 EXPECT_TRUE(
858 matches("class X { public: X(int); }; void x() { new X(0); }", New));
859 EXPECT_TRUE(matches("class X {}; void x(int) { new X; }", New));
860 }
861
TEST_P(ASTMatchersTest,Matcher_DeleteExpression)862 TEST_P(ASTMatchersTest, Matcher_DeleteExpression) {
863 if (!GetParam().isCXX()) {
864 return;
865 }
866 EXPECT_TRUE(
867 matches("struct A {}; void f(A* a) { delete a; }", cxxDeleteExpr()));
868 }
869
TEST_P(ASTMatchersTest,Matcher_NoexceptExpression)870 TEST_P(ASTMatchersTest, Matcher_NoexceptExpression) {
871 if (!GetParam().isCXX11OrLater()) {
872 return;
873 }
874 StatementMatcher NoExcept = cxxNoexceptExpr();
875 EXPECT_TRUE(matches("void foo(); bool bar = noexcept(foo());", NoExcept));
876 EXPECT_TRUE(
877 matches("void foo() noexcept; bool bar = noexcept(foo());", NoExcept));
878 EXPECT_TRUE(notMatches("void foo() noexcept;", NoExcept));
879 EXPECT_TRUE(notMatches("void foo() noexcept(0+1);", NoExcept));
880 EXPECT_TRUE(matches("void foo() noexcept(noexcept(1+1));", NoExcept));
881 }
882
TEST_P(ASTMatchersTest,Matcher_DefaultArgument)883 TEST_P(ASTMatchersTest, Matcher_DefaultArgument) {
884 if (!GetParam().isCXX()) {
885 return;
886 }
887 StatementMatcher Arg = cxxDefaultArgExpr();
888 EXPECT_TRUE(matches("void x(int, int = 0) { int y; x(y); }", Arg));
889 EXPECT_TRUE(
890 matches("class X { void x(int, int = 0) { int y; x(y); } };", Arg));
891 EXPECT_TRUE(notMatches("void x(int, int = 0) { int y; x(y, 0); }", Arg));
892 }
893
TEST_P(ASTMatchersTest,StringLiteral)894 TEST_P(ASTMatchersTest, StringLiteral) {
895 StatementMatcher Literal = stringLiteral();
896 EXPECT_TRUE(matches("const char *s = \"string\";", Literal));
897 // with escaped characters
898 EXPECT_TRUE(matches("const char *s = \"\x05five\";", Literal));
899 // no matching -- though the data type is the same, there is no string literal
900 EXPECT_TRUE(notMatches("const char s[1] = {'a'};", Literal));
901 }
902
TEST_P(ASTMatchersTest,StringLiteral_CXX)903 TEST_P(ASTMatchersTest, StringLiteral_CXX) {
904 if (!GetParam().isCXX()) {
905 return;
906 }
907 EXPECT_TRUE(matches("const wchar_t *s = L\"string\";", stringLiteral()));
908 }
909
TEST_P(ASTMatchersTest,CharacterLiteral)910 TEST_P(ASTMatchersTest, CharacterLiteral) {
911 EXPECT_TRUE(matches("const char c = 'c';", characterLiteral()));
912 EXPECT_TRUE(notMatches("const char c = 0x1;", characterLiteral()));
913 }
914
TEST_P(ASTMatchersTest,CharacterLiteral_CXX)915 TEST_P(ASTMatchersTest, CharacterLiteral_CXX) {
916 if (!GetParam().isCXX()) {
917 return;
918 }
919 // wide character
920 EXPECT_TRUE(matches("const char c = L'c';", characterLiteral()));
921 // wide character, Hex encoded, NOT MATCHED!
922 EXPECT_TRUE(notMatches("const wchar_t c = 0x2126;", characterLiteral()));
923 }
924
TEST_P(ASTMatchersTest,IntegerLiteral)925 TEST_P(ASTMatchersTest, IntegerLiteral) {
926 StatementMatcher HasIntLiteral = integerLiteral();
927 EXPECT_TRUE(matches("int i = 10;", HasIntLiteral));
928 EXPECT_TRUE(matches("int i = 0x1AB;", HasIntLiteral));
929 EXPECT_TRUE(matches("int i = 10L;", HasIntLiteral));
930 EXPECT_TRUE(matches("int i = 10U;", HasIntLiteral));
931
932 // Non-matching cases (character literals, float and double)
933 EXPECT_TRUE(notMatches("int i = L'a';",
934 HasIntLiteral)); // this is actually a character
935 // literal cast to int
936 EXPECT_TRUE(notMatches("int i = 'a';", HasIntLiteral));
937 EXPECT_TRUE(notMatches("int i = 1e10;", HasIntLiteral));
938 EXPECT_TRUE(notMatches("int i = 10.0;", HasIntLiteral));
939
940 // Negative integers.
941 EXPECT_TRUE(
942 matches("int i = -10;",
943 unaryOperator(hasOperatorName("-"),
944 hasUnaryOperand(integerLiteral(equals(10))))));
945 }
946
TEST_P(ASTMatchersTest,FloatLiteral)947 TEST_P(ASTMatchersTest, FloatLiteral) {
948 StatementMatcher HasFloatLiteral = floatLiteral();
949 EXPECT_TRUE(matches("float i = 10.0;", HasFloatLiteral));
950 EXPECT_TRUE(matches("float i = 10.0f;", HasFloatLiteral));
951 EXPECT_TRUE(matches("double i = 10.0;", HasFloatLiteral));
952 EXPECT_TRUE(matches("double i = 10.0L;", HasFloatLiteral));
953 EXPECT_TRUE(matches("double i = 1e10;", HasFloatLiteral));
954 EXPECT_TRUE(matches("double i = 5.0;", floatLiteral(equals(5.0))));
955 EXPECT_TRUE(matches("double i = 5.0;", floatLiteral(equals(5.0f))));
956 EXPECT_TRUE(
957 matches("double i = 5.0;", floatLiteral(equals(llvm::APFloat(5.0)))));
958
959 EXPECT_TRUE(notMatches("float i = 10;", HasFloatLiteral));
960 EXPECT_TRUE(notMatches("double i = 5.0;", floatLiteral(equals(6.0))));
961 EXPECT_TRUE(notMatches("double i = 5.0;", floatLiteral(equals(6.0f))));
962 EXPECT_TRUE(
963 notMatches("double i = 5.0;", floatLiteral(equals(llvm::APFloat(6.0)))));
964 }
965
TEST_P(ASTMatchersTest,CXXNullPtrLiteralExpr)966 TEST_P(ASTMatchersTest, CXXNullPtrLiteralExpr) {
967 if (!GetParam().isCXX11OrLater()) {
968 return;
969 }
970 EXPECT_TRUE(matches("int* i = nullptr;", cxxNullPtrLiteralExpr()));
971 }
972
TEST_P(ASTMatchersTest,ChooseExpr)973 TEST_P(ASTMatchersTest, ChooseExpr) {
974 EXPECT_TRUE(matches("void f() { (void)__builtin_choose_expr(1, 2, 3); }",
975 chooseExpr()));
976 }
977
TEST_P(ASTMatchersTest,GNUNullExpr)978 TEST_P(ASTMatchersTest, GNUNullExpr) {
979 if (!GetParam().isCXX()) {
980 return;
981 }
982 EXPECT_TRUE(matches("int* i = __null;", gnuNullExpr()));
983 }
984
TEST_P(ASTMatchersTest,GenericSelectionExpr)985 TEST_P(ASTMatchersTest, GenericSelectionExpr) {
986 EXPECT_TRUE(matches("void f() { (void)_Generic(1, int: 1, float: 2.0); }",
987 genericSelectionExpr()));
988 }
989
TEST_P(ASTMatchersTest,AtomicExpr)990 TEST_P(ASTMatchersTest, AtomicExpr) {
991 EXPECT_TRUE(matches("void foo() { int *ptr; __atomic_load_n(ptr, 1); }",
992 atomicExpr()));
993 }
994
TEST_P(ASTMatchersTest,Initializers_C99)995 TEST_P(ASTMatchersTest, Initializers_C99) {
996 if (!GetParam().isC99OrLater()) {
997 return;
998 }
999 EXPECT_TRUE(matches(
1000 "void foo() { struct point { double x; double y; };"
1001 " struct point ptarray[10] = "
1002 " { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; }",
1003 initListExpr(hasSyntacticForm(initListExpr(
1004 has(designatedInitExpr(designatorCountIs(2),
1005 hasDescendant(floatLiteral(equals(1.0))),
1006 hasDescendant(integerLiteral(equals(2))))),
1007 has(designatedInitExpr(designatorCountIs(2),
1008 hasDescendant(floatLiteral(equals(2.0))),
1009 hasDescendant(integerLiteral(equals(2))))),
1010 has(designatedInitExpr(
1011 designatorCountIs(2), hasDescendant(floatLiteral(equals(1.0))),
1012 hasDescendant(integerLiteral(equals(0))))))))));
1013 }
1014
TEST_P(ASTMatchersTest,Initializers_CXX)1015 TEST_P(ASTMatchersTest, Initializers_CXX) {
1016 if (GetParam().Language != Lang_CXX03) {
1017 // FIXME: Make this test pass with other C++ standard versions.
1018 return;
1019 }
1020 EXPECT_TRUE(matches(
1021 "void foo() { struct point { double x; double y; };"
1022 " struct point ptarray[10] = "
1023 " { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; }",
1024 initListExpr(
1025 has(cxxConstructExpr(requiresZeroInitialization())),
1026 has(initListExpr(
1027 hasType(asString("struct point")), has(floatLiteral(equals(1.0))),
1028 has(implicitValueInitExpr(hasType(asString("double")))))),
1029 has(initListExpr(hasType(asString("struct point")),
1030 has(floatLiteral(equals(2.0))),
1031 has(floatLiteral(equals(1.0))))))));
1032 }
1033
TEST_P(ASTMatchersTest,ParenListExpr)1034 TEST_P(ASTMatchersTest, ParenListExpr) {
1035 if (!GetParam().isCXX()) {
1036 return;
1037 }
1038 EXPECT_TRUE(
1039 matches("template<typename T> class foo { void bar() { foo X(*this); } };"
1040 "template class foo<int>;",
1041 varDecl(hasInitializer(parenListExpr(has(unaryOperator()))))));
1042 }
1043
TEST_P(ASTMatchersTest,StmtExpr)1044 TEST_P(ASTMatchersTest, StmtExpr) {
1045 EXPECT_TRUE(matches("void declToImport() { int C = ({int X=4; X;}); }",
1046 varDecl(hasInitializer(stmtExpr()))));
1047 }
1048
TEST_P(ASTMatchersTest,PredefinedExpr)1049 TEST_P(ASTMatchersTest, PredefinedExpr) {
1050 // __func__ expands as StringLiteral("foo")
1051 EXPECT_TRUE(matches("void foo() { __func__; }",
1052 predefinedExpr(hasType(asString("const char [4]")),
1053 has(stringLiteral()))));
1054 }
1055
TEST_P(ASTMatchersTest,AsmStatement)1056 TEST_P(ASTMatchersTest, AsmStatement) {
1057 EXPECT_TRUE(matches("void foo() { __asm(\"mov al, 2\"); }", asmStmt()));
1058 }
1059
TEST_P(ASTMatchersTest,HasCondition)1060 TEST_P(ASTMatchersTest, HasCondition) {
1061 if (!GetParam().isCXX()) {
1062 // FIXME: Add a test for `hasCondition()` that does not depend on C++.
1063 return;
1064 }
1065
1066 StatementMatcher Condition =
1067 ifStmt(hasCondition(cxxBoolLiteral(equals(true))));
1068
1069 EXPECT_TRUE(matches("void x() { if (true) {} }", Condition));
1070 EXPECT_TRUE(notMatches("void x() { if (false) {} }", Condition));
1071 EXPECT_TRUE(notMatches("void x() { bool a = true; if (a) {} }", Condition));
1072 EXPECT_TRUE(notMatches("void x() { if (true || false) {} }", Condition));
1073 EXPECT_TRUE(notMatches("void x() { if (1) {} }", Condition));
1074 }
1075
TEST_P(ASTMatchersTest,ConditionalOperator)1076 TEST_P(ASTMatchersTest, ConditionalOperator) {
1077 if (!GetParam().isCXX()) {
1078 // FIXME: Add a test for `conditionalOperator()` that does not depend on
1079 // C++.
1080 return;
1081 }
1082
1083 StatementMatcher Conditional =
1084 conditionalOperator(hasCondition(cxxBoolLiteral(equals(true))),
1085 hasTrueExpression(cxxBoolLiteral(equals(false))));
1086
1087 EXPECT_TRUE(matches("void x() { true ? false : true; }", Conditional));
1088 EXPECT_TRUE(notMatches("void x() { false ? false : true; }", Conditional));
1089 EXPECT_TRUE(notMatches("void x() { true ? true : false; }", Conditional));
1090
1091 StatementMatcher ConditionalFalse =
1092 conditionalOperator(hasFalseExpression(cxxBoolLiteral(equals(false))));
1093
1094 EXPECT_TRUE(matches("void x() { true ? true : false; }", ConditionalFalse));
1095 EXPECT_TRUE(
1096 notMatches("void x() { true ? false : true; }", ConditionalFalse));
1097
1098 EXPECT_TRUE(matches("void x() { true ? true : false; }", ConditionalFalse));
1099 EXPECT_TRUE(
1100 notMatches("void x() { true ? false : true; }", ConditionalFalse));
1101 }
1102
TEST_P(ASTMatchersTest,BinaryConditionalOperator)1103 TEST_P(ASTMatchersTest, BinaryConditionalOperator) {
1104 if (!GetParam().isCXX()) {
1105 // FIXME: This test should work in non-C++ language modes.
1106 return;
1107 }
1108
1109 StatementMatcher AlwaysOne = traverse(
1110 TK_AsIs, binaryConditionalOperator(
1111 hasCondition(implicitCastExpr(has(opaqueValueExpr(
1112 hasSourceExpression((integerLiteral(equals(1)))))))),
1113 hasFalseExpression(integerLiteral(equals(0)))));
1114
1115 EXPECT_TRUE(matches("void x() { 1 ?: 0; }", AlwaysOne));
1116
1117 StatementMatcher FourNotFive = binaryConditionalOperator(
1118 hasTrueExpression(
1119 opaqueValueExpr(hasSourceExpression((integerLiteral(equals(4)))))),
1120 hasFalseExpression(integerLiteral(equals(5))));
1121
1122 EXPECT_TRUE(matches("void x() { 4 ?: 5; }", FourNotFive));
1123 }
1124
TEST_P(ASTMatchersTest,ArraySubscriptExpr)1125 TEST_P(ASTMatchersTest, ArraySubscriptExpr) {
1126 EXPECT_TRUE(
1127 matches("int i[2]; void f() { i[1] = 1; }", arraySubscriptExpr()));
1128 EXPECT_TRUE(notMatches("int i; void f() { i = 1; }", arraySubscriptExpr()));
1129 }
1130
TEST_P(ASTMatchersTest,ForStmt)1131 TEST_P(ASTMatchersTest, ForStmt) {
1132 EXPECT_TRUE(matches("void f() { for(;;); }", forStmt()));
1133 EXPECT_TRUE(matches("void f() { if(1) for(;;); }", forStmt()));
1134 }
1135
TEST_P(ASTMatchersTest,ForStmt_CXX11)1136 TEST_P(ASTMatchersTest, ForStmt_CXX11) {
1137 if (!GetParam().isCXX11OrLater()) {
1138 return;
1139 }
1140 EXPECT_TRUE(notMatches("int as[] = { 1, 2, 3 };"
1141 "void f() { for (auto &a : as); }",
1142 forStmt()));
1143 }
1144
TEST_P(ASTMatchersTest,ForStmt_NoFalsePositives)1145 TEST_P(ASTMatchersTest, ForStmt_NoFalsePositives) {
1146 EXPECT_TRUE(notMatches("void f() { ; }", forStmt()));
1147 EXPECT_TRUE(notMatches("void f() { if(1); }", forStmt()));
1148 }
1149
TEST_P(ASTMatchersTest,CompoundStatement)1150 TEST_P(ASTMatchersTest, CompoundStatement) {
1151 EXPECT_TRUE(notMatches("void f();", compoundStmt()));
1152 EXPECT_TRUE(matches("void f() {}", compoundStmt()));
1153 EXPECT_TRUE(matches("void f() {{}}", compoundStmt()));
1154 }
1155
TEST_P(ASTMatchersTest,CompoundStatement_DoesNotMatchEmptyStruct)1156 TEST_P(ASTMatchersTest, CompoundStatement_DoesNotMatchEmptyStruct) {
1157 if (!GetParam().isCXX()) {
1158 // FIXME: Add a similar test that does not depend on C++.
1159 return;
1160 }
1161 // It's not a compound statement just because there's "{}" in the source
1162 // text. This is an AST search, not grep.
1163 EXPECT_TRUE(notMatches("namespace n { struct S {}; }", compoundStmt()));
1164 EXPECT_TRUE(
1165 matches("namespace n { struct S { void f() {{}} }; }", compoundStmt()));
1166 }
1167
TEST_P(ASTMatchersTest,CastExpr_MatchesExplicitCasts)1168 TEST_P(ASTMatchersTest, CastExpr_MatchesExplicitCasts) {
1169 EXPECT_TRUE(matches("void *p = (void *)(&p);", castExpr()));
1170 }
1171
TEST_P(ASTMatchersTest,CastExpr_MatchesExplicitCasts_CXX)1172 TEST_P(ASTMatchersTest, CastExpr_MatchesExplicitCasts_CXX) {
1173 if (!GetParam().isCXX()) {
1174 return;
1175 }
1176 EXPECT_TRUE(matches("char *p = reinterpret_cast<char *>(&p);", castExpr()));
1177 EXPECT_TRUE(matches("char q, *p = const_cast<char *>(&q);", castExpr()));
1178 EXPECT_TRUE(matches("char c = char(0);", castExpr()));
1179 }
1180
TEST_P(ASTMatchersTest,CastExpression_MatchesImplicitCasts)1181 TEST_P(ASTMatchersTest, CastExpression_MatchesImplicitCasts) {
1182 // This test creates an implicit cast from int to char.
1183 EXPECT_TRUE(matches("char c = 0;", traverse(TK_AsIs, castExpr())));
1184 // This test creates an implicit cast from lvalue to rvalue.
1185 EXPECT_TRUE(matches("void f() { char c = 0, d = c; }",
1186 traverse(TK_AsIs, castExpr())));
1187 }
1188
TEST_P(ASTMatchersTest,CastExpr_DoesNotMatchNonCasts)1189 TEST_P(ASTMatchersTest, CastExpr_DoesNotMatchNonCasts) {
1190 if (GetParam().Language == Lang_C89 || GetParam().Language == Lang_C99) {
1191 // This does have a cast in C
1192 EXPECT_TRUE(matches("char c = '0';", implicitCastExpr()));
1193 } else {
1194 EXPECT_TRUE(notMatches("char c = '0';", castExpr()));
1195 }
1196 EXPECT_TRUE(notMatches("int i = (0);", castExpr()));
1197 EXPECT_TRUE(notMatches("int i = 0;", castExpr()));
1198 }
1199
TEST_P(ASTMatchersTest,CastExpr_DoesNotMatchNonCasts_CXX)1200 TEST_P(ASTMatchersTest, CastExpr_DoesNotMatchNonCasts_CXX) {
1201 if (!GetParam().isCXX()) {
1202 return;
1203 }
1204 EXPECT_TRUE(notMatches("char c, &q = c;", castExpr()));
1205 }
1206
TEST_P(ASTMatchersTest,CXXReinterpretCastExpr)1207 TEST_P(ASTMatchersTest, CXXReinterpretCastExpr) {
1208 if (!GetParam().isCXX()) {
1209 return;
1210 }
1211 EXPECT_TRUE(matches("char* p = reinterpret_cast<char*>(&p);",
1212 cxxReinterpretCastExpr()));
1213 }
1214
TEST_P(ASTMatchersTest,CXXReinterpretCastExpr_DoesNotMatchOtherCasts)1215 TEST_P(ASTMatchersTest, CXXReinterpretCastExpr_DoesNotMatchOtherCasts) {
1216 if (!GetParam().isCXX()) {
1217 return;
1218 }
1219 EXPECT_TRUE(notMatches("char* p = (char*)(&p);", cxxReinterpretCastExpr()));
1220 EXPECT_TRUE(notMatches("char q, *p = const_cast<char*>(&q);",
1221 cxxReinterpretCastExpr()));
1222 EXPECT_TRUE(notMatches("void* p = static_cast<void*>(&p);",
1223 cxxReinterpretCastExpr()));
1224 EXPECT_TRUE(notMatches("struct B { virtual ~B() {} }; struct D : B {};"
1225 "B b;"
1226 "D* p = dynamic_cast<D*>(&b);",
1227 cxxReinterpretCastExpr()));
1228 }
1229
TEST_P(ASTMatchersTest,CXXFunctionalCastExpr_MatchesSimpleCase)1230 TEST_P(ASTMatchersTest, CXXFunctionalCastExpr_MatchesSimpleCase) {
1231 if (!GetParam().isCXX()) {
1232 return;
1233 }
1234 StringRef foo_class = "class Foo { public: Foo(const char*); };";
1235 EXPECT_TRUE(matches(foo_class + "void r() { Foo f = Foo(\"hello world\"); }",
1236 cxxFunctionalCastExpr()));
1237 }
1238
TEST_P(ASTMatchersTest,CXXFunctionalCastExpr_DoesNotMatchOtherCasts)1239 TEST_P(ASTMatchersTest, CXXFunctionalCastExpr_DoesNotMatchOtherCasts) {
1240 if (!GetParam().isCXX()) {
1241 return;
1242 }
1243 StringRef FooClass = "class Foo { public: Foo(const char*); };";
1244 EXPECT_TRUE(
1245 notMatches(FooClass + "void r() { Foo f = (Foo) \"hello world\"; }",
1246 cxxFunctionalCastExpr()));
1247 EXPECT_TRUE(notMatches(FooClass + "void r() { Foo f = \"hello world\"; }",
1248 cxxFunctionalCastExpr()));
1249 }
1250
TEST_P(ASTMatchersTest,CXXDynamicCastExpr)1251 TEST_P(ASTMatchersTest, CXXDynamicCastExpr) {
1252 if (!GetParam().isCXX()) {
1253 return;
1254 }
1255 EXPECT_TRUE(matches("struct B { virtual ~B() {} }; struct D : B {};"
1256 "B b;"
1257 "D* p = dynamic_cast<D*>(&b);",
1258 cxxDynamicCastExpr()));
1259 }
1260
TEST_P(ASTMatchersTest,CXXStaticCastExpr_MatchesSimpleCase)1261 TEST_P(ASTMatchersTest, CXXStaticCastExpr_MatchesSimpleCase) {
1262 if (!GetParam().isCXX()) {
1263 return;
1264 }
1265 EXPECT_TRUE(matches("void* p(static_cast<void*>(&p));", cxxStaticCastExpr()));
1266 }
1267
TEST_P(ASTMatchersTest,CXXStaticCastExpr_DoesNotMatchOtherCasts)1268 TEST_P(ASTMatchersTest, CXXStaticCastExpr_DoesNotMatchOtherCasts) {
1269 if (!GetParam().isCXX()) {
1270 return;
1271 }
1272 EXPECT_TRUE(notMatches("char* p = (char*)(&p);", cxxStaticCastExpr()));
1273 EXPECT_TRUE(
1274 notMatches("char q, *p = const_cast<char*>(&q);", cxxStaticCastExpr()));
1275 EXPECT_TRUE(notMatches("void* p = reinterpret_cast<char*>(&p);",
1276 cxxStaticCastExpr()));
1277 EXPECT_TRUE(notMatches("struct B { virtual ~B() {} }; struct D : B {};"
1278 "B b;"
1279 "D* p = dynamic_cast<D*>(&b);",
1280 cxxStaticCastExpr()));
1281 }
1282
TEST_P(ASTMatchersTest,CStyleCastExpr_MatchesSimpleCase)1283 TEST_P(ASTMatchersTest, CStyleCastExpr_MatchesSimpleCase) {
1284 EXPECT_TRUE(matches("int i = (int) 2.2f;", cStyleCastExpr()));
1285 }
1286
TEST_P(ASTMatchersTest,CStyleCastExpr_DoesNotMatchOtherCasts)1287 TEST_P(ASTMatchersTest, CStyleCastExpr_DoesNotMatchOtherCasts) {
1288 if (!GetParam().isCXX()) {
1289 return;
1290 }
1291 EXPECT_TRUE(notMatches("char* p = static_cast<char*>(0);"
1292 "char q, *r = const_cast<char*>(&q);"
1293 "void* s = reinterpret_cast<char*>(&s);"
1294 "struct B { virtual ~B() {} }; struct D : B {};"
1295 "B b;"
1296 "D* t = dynamic_cast<D*>(&b);",
1297 cStyleCastExpr()));
1298 }
1299
TEST_P(ASTMatchersTest,ImplicitCastExpr_MatchesSimpleCase)1300 TEST_P(ASTMatchersTest, ImplicitCastExpr_MatchesSimpleCase) {
1301 // This test creates an implicit const cast.
1302 EXPECT_TRUE(
1303 matches("void f() { int x = 0; const int y = x; }",
1304 traverse(TK_AsIs, varDecl(hasInitializer(implicitCastExpr())))));
1305 // This test creates an implicit cast from int to char.
1306 EXPECT_TRUE(
1307 matches("char c = 0;",
1308 traverse(TK_AsIs, varDecl(hasInitializer(implicitCastExpr())))));
1309 // This test creates an implicit array-to-pointer cast.
1310 EXPECT_TRUE(
1311 matches("int arr[6]; int *p = arr;",
1312 traverse(TK_AsIs, varDecl(hasInitializer(implicitCastExpr())))));
1313 }
1314
TEST_P(ASTMatchersTest,ImplicitCastExpr_DoesNotMatchIncorrectly)1315 TEST_P(ASTMatchersTest, ImplicitCastExpr_DoesNotMatchIncorrectly) {
1316 // This test verifies that implicitCastExpr() matches exactly when implicit
1317 // casts are present, and that it ignores explicit and paren casts.
1318
1319 // These two test cases have no casts.
1320 EXPECT_TRUE(
1321 notMatches("int x = 0;", varDecl(hasInitializer(implicitCastExpr()))));
1322 EXPECT_TRUE(
1323 notMatches("int x = (0);", varDecl(hasInitializer(implicitCastExpr()))));
1324 EXPECT_TRUE(notMatches("void f() { int x = 0; double d = (double) x; }",
1325 varDecl(hasInitializer(implicitCastExpr()))));
1326 }
1327
TEST_P(ASTMatchersTest,ImplicitCastExpr_DoesNotMatchIncorrectly_CXX)1328 TEST_P(ASTMatchersTest, ImplicitCastExpr_DoesNotMatchIncorrectly_CXX) {
1329 if (!GetParam().isCXX()) {
1330 return;
1331 }
1332 EXPECT_TRUE(notMatches("int x = 0, &y = x;",
1333 varDecl(hasInitializer(implicitCastExpr()))));
1334 EXPECT_TRUE(notMatches("const int *p; int *q = const_cast<int *>(p);",
1335 varDecl(hasInitializer(implicitCastExpr()))));
1336 }
1337
TEST_P(ASTMatchersTest,Stmt_DoesNotMatchDeclarations)1338 TEST_P(ASTMatchersTest, Stmt_DoesNotMatchDeclarations) {
1339 EXPECT_TRUE(notMatches("struct X {};", stmt()));
1340 }
1341
TEST_P(ASTMatchersTest,Stmt_MatchesCompoundStatments)1342 TEST_P(ASTMatchersTest, Stmt_MatchesCompoundStatments) {
1343 EXPECT_TRUE(matches("void x() {}", stmt()));
1344 }
1345
TEST_P(ASTMatchersTest,DeclStmt_DoesNotMatchCompoundStatements)1346 TEST_P(ASTMatchersTest, DeclStmt_DoesNotMatchCompoundStatements) {
1347 EXPECT_TRUE(notMatches("void x() {}", declStmt()));
1348 }
1349
TEST_P(ASTMatchersTest,DeclStmt_MatchesVariableDeclarationStatements)1350 TEST_P(ASTMatchersTest, DeclStmt_MatchesVariableDeclarationStatements) {
1351 EXPECT_TRUE(matches("void x() { int a; }", declStmt()));
1352 }
1353
TEST_P(ASTMatchersTest,ExprWithCleanups_MatchesExprWithCleanups)1354 TEST_P(ASTMatchersTest, ExprWithCleanups_MatchesExprWithCleanups) {
1355 if (!GetParam().isCXX()) {
1356 return;
1357 }
1358 EXPECT_TRUE(
1359 matches("struct Foo { ~Foo(); };"
1360 "const Foo f = Foo();",
1361 traverse(TK_AsIs, varDecl(hasInitializer(exprWithCleanups())))));
1362 EXPECT_FALSE(
1363 matches("struct Foo { }; Foo a;"
1364 "const Foo f = a;",
1365 traverse(TK_AsIs, varDecl(hasInitializer(exprWithCleanups())))));
1366 }
1367
TEST_P(ASTMatchersTest,InitListExpr)1368 TEST_P(ASTMatchersTest, InitListExpr) {
1369 EXPECT_TRUE(matches("int a[] = { 1, 2 };",
1370 initListExpr(hasType(asString("int [2]")))));
1371 EXPECT_TRUE(matches("struct B { int x, y; }; struct B b = { 5, 6 };",
1372 initListExpr(hasType(recordDecl(hasName("B"))))));
1373 EXPECT_TRUE(
1374 matches("int i[1] = {42, [0] = 43};", integerLiteral(equals(42))));
1375 }
1376
TEST_P(ASTMatchersTest,InitListExpr_CXX)1377 TEST_P(ASTMatchersTest, InitListExpr_CXX) {
1378 if (!GetParam().isCXX()) {
1379 return;
1380 }
1381 EXPECT_TRUE(matches("struct S { S(void (*a)()); };"
1382 "void f();"
1383 "S s[1] = { &f };",
1384 declRefExpr(to(functionDecl(hasName("f"))))));
1385 }
1386
TEST_P(ASTMatchersTest,CXXStdInitializerListExpression_MatchesCXXStdInitializerListExpression)1387 TEST_P(ASTMatchersTest,
1388 CXXStdInitializerListExpression_MatchesCXXStdInitializerListExpression) {
1389 if (!GetParam().isCXX11OrLater()) {
1390 return;
1391 }
1392 StringRef code = "namespace std {"
1393 "template <typename> class initializer_list {"
1394 " public: initializer_list() noexcept {}"
1395 "};"
1396 "}"
1397 "struct A {"
1398 " A(std::initializer_list<int>) {}"
1399 "};";
1400 EXPECT_TRUE(matches(
1401 code + "A a{0};",
1402 traverse(TK_AsIs, cxxConstructExpr(has(cxxStdInitializerListExpr()),
1403 hasDeclaration(cxxConstructorDecl(
1404 ofClass(hasName("A"))))))));
1405 EXPECT_TRUE(matches(
1406 code + "A a = {0};",
1407 traverse(TK_AsIs, cxxConstructExpr(has(cxxStdInitializerListExpr()),
1408 hasDeclaration(cxxConstructorDecl(
1409 ofClass(hasName("A"))))))));
1410
1411 EXPECT_TRUE(notMatches("int a[] = { 1, 2 };", cxxStdInitializerListExpr()));
1412 EXPECT_TRUE(notMatches("struct B { int x, y; }; B b = { 5, 6 };",
1413 cxxStdInitializerListExpr()));
1414 }
1415
TEST_P(ASTMatchersTest,UsingDecl_MatchesUsingDeclarations)1416 TEST_P(ASTMatchersTest, UsingDecl_MatchesUsingDeclarations) {
1417 if (!GetParam().isCXX()) {
1418 return;
1419 }
1420 EXPECT_TRUE(matches("namespace X { int x; } using X::x;", usingDecl()));
1421 }
1422
TEST_P(ASTMatchersTest,UsingDecl_MatchesShadowUsingDelcarations)1423 TEST_P(ASTMatchersTest, UsingDecl_MatchesShadowUsingDelcarations) {
1424 if (!GetParam().isCXX()) {
1425 return;
1426 }
1427 EXPECT_TRUE(matches("namespace f { int a; } using f::a;",
1428 usingDecl(hasAnyUsingShadowDecl(hasName("a")))));
1429 }
1430
TEST_P(ASTMatchersTest,UsingEnumDecl_MatchesUsingEnumDeclarations)1431 TEST_P(ASTMatchersTest, UsingEnumDecl_MatchesUsingEnumDeclarations) {
1432 if (!GetParam().isCXX20OrLater()) {
1433 return;
1434 }
1435 EXPECT_TRUE(
1436 matches("namespace X { enum x {}; } using enum X::x;", usingEnumDecl()));
1437 }
1438
TEST_P(ASTMatchersTest,UsingEnumDecl_MatchesShadowUsingDeclarations)1439 TEST_P(ASTMatchersTest, UsingEnumDecl_MatchesShadowUsingDeclarations) {
1440 if (!GetParam().isCXX20OrLater()) {
1441 return;
1442 }
1443 EXPECT_TRUE(matches("namespace f { enum a {b}; } using enum f::a;",
1444 usingEnumDecl(hasAnyUsingShadowDecl(hasName("b")))));
1445 }
1446
TEST_P(ASTMatchersTest,UsingDirectiveDecl_MatchesUsingNamespace)1447 TEST_P(ASTMatchersTest, UsingDirectiveDecl_MatchesUsingNamespace) {
1448 if (!GetParam().isCXX()) {
1449 return;
1450 }
1451 EXPECT_TRUE(matches("namespace X { int x; } using namespace X;",
1452 usingDirectiveDecl()));
1453 EXPECT_FALSE(
1454 matches("namespace X { int x; } using X::x;", usingDirectiveDecl()));
1455 }
1456
TEST_P(ASTMatchersTest,WhileStmt)1457 TEST_P(ASTMatchersTest, WhileStmt) {
1458 EXPECT_TRUE(notMatches("void x() {}", whileStmt()));
1459 EXPECT_TRUE(matches("void x() { while(1); }", whileStmt()));
1460 EXPECT_TRUE(notMatches("void x() { do {} while(1); }", whileStmt()));
1461 }
1462
TEST_P(ASTMatchersTest,DoStmt_MatchesDoLoops)1463 TEST_P(ASTMatchersTest, DoStmt_MatchesDoLoops) {
1464 EXPECT_TRUE(matches("void x() { do {} while(1); }", doStmt()));
1465 EXPECT_TRUE(matches("void x() { do ; while(0); }", doStmt()));
1466 }
1467
TEST_P(ASTMatchersTest,DoStmt_DoesNotMatchWhileLoops)1468 TEST_P(ASTMatchersTest, DoStmt_DoesNotMatchWhileLoops) {
1469 EXPECT_TRUE(notMatches("void x() { while(1) {} }", doStmt()));
1470 }
1471
TEST_P(ASTMatchersTest,SwitchCase_MatchesCase)1472 TEST_P(ASTMatchersTest, SwitchCase_MatchesCase) {
1473 EXPECT_TRUE(matches("void x() { switch(42) { case 42:; } }", switchCase()));
1474 EXPECT_TRUE(matches("void x() { switch(42) { default:; } }", switchCase()));
1475 EXPECT_TRUE(matches("void x() { switch(42) default:; }", switchCase()));
1476 EXPECT_TRUE(notMatches("void x() { switch(42) {} }", switchCase()));
1477 }
1478
TEST_P(ASTMatchersTest,SwitchCase_MatchesSwitch)1479 TEST_P(ASTMatchersTest, SwitchCase_MatchesSwitch) {
1480 EXPECT_TRUE(matches("void x() { switch(42) { case 42:; } }", switchStmt()));
1481 EXPECT_TRUE(matches("void x() { switch(42) { default:; } }", switchStmt()));
1482 EXPECT_TRUE(matches("void x() { switch(42) default:; }", switchStmt()));
1483 EXPECT_TRUE(notMatches("void x() {}", switchStmt()));
1484 }
1485
TEST_P(ASTMatchersTest,CxxExceptionHandling_SimpleCases)1486 TEST_P(ASTMatchersTest, CxxExceptionHandling_SimpleCases) {
1487 if (!GetParam().isCXX()) {
1488 return;
1489 }
1490 EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", cxxCatchStmt()));
1491 EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", cxxTryStmt()));
1492 EXPECT_TRUE(
1493 notMatches("void foo() try { } catch(int X) { }", cxxThrowExpr()));
1494 EXPECT_TRUE(
1495 matches("void foo() try { throw; } catch(int X) { }", cxxThrowExpr()));
1496 EXPECT_TRUE(
1497 matches("void foo() try { throw 5;} catch(int X) { }", cxxThrowExpr()));
1498 EXPECT_TRUE(matches("void foo() try { throw; } catch(...) { }",
1499 cxxCatchStmt(isCatchAll())));
1500 EXPECT_TRUE(notMatches("void foo() try { throw; } catch(int) { }",
1501 cxxCatchStmt(isCatchAll())));
1502 EXPECT_TRUE(matches("void foo() try {} catch(int X) { }",
1503 varDecl(isExceptionVariable())));
1504 EXPECT_TRUE(notMatches("void foo() try { int X; } catch (...) { }",
1505 varDecl(isExceptionVariable())));
1506 }
1507
TEST_P(ASTMatchersTest,ParenExpr_SimpleCases)1508 TEST_P(ASTMatchersTest, ParenExpr_SimpleCases) {
1509 EXPECT_TRUE(matches("int i = (3);", traverse(TK_AsIs, parenExpr())));
1510 EXPECT_TRUE(matches("int i = (3 + 7);", traverse(TK_AsIs, parenExpr())));
1511 EXPECT_TRUE(notMatches("int i = 3;", traverse(TK_AsIs, parenExpr())));
1512 EXPECT_TRUE(notMatches("int f() { return 1; }; void g() { int a = f(); }",
1513 traverse(TK_AsIs, parenExpr())));
1514 }
1515
TEST_P(ASTMatchersTest,IgnoringParens)1516 TEST_P(ASTMatchersTest, IgnoringParens) {
1517 EXPECT_FALSE(matches("const char* str = (\"my-string\");",
1518 traverse(TK_AsIs, implicitCastExpr(hasSourceExpression(
1519 stringLiteral())))));
1520 EXPECT_TRUE(
1521 matches("const char* str = (\"my-string\");",
1522 traverse(TK_AsIs, implicitCastExpr(hasSourceExpression(
1523 ignoringParens(stringLiteral()))))));
1524 }
1525
TEST_P(ASTMatchersTest,QualType)1526 TEST_P(ASTMatchersTest, QualType) {
1527 EXPECT_TRUE(matches("struct S {};", qualType().bind("loc")));
1528 }
1529
TEST_P(ASTMatchersTest,ConstantArrayType)1530 TEST_P(ASTMatchersTest, ConstantArrayType) {
1531 EXPECT_TRUE(matches("int a[2];", constantArrayType()));
1532 EXPECT_TRUE(notMatches("void f() { int a[] = { 2, 3 }; int b[a[0]]; }",
1533 constantArrayType(hasElementType(builtinType()))));
1534
1535 EXPECT_TRUE(matches("int a[42];", constantArrayType(hasSize(42))));
1536 EXPECT_TRUE(matches("int b[2*21];", constantArrayType(hasSize(42))));
1537 EXPECT_TRUE(notMatches("int c[41], d[43];", constantArrayType(hasSize(42))));
1538 }
1539
TEST_P(ASTMatchersTest,DependentSizedArrayType)1540 TEST_P(ASTMatchersTest, DependentSizedArrayType) {
1541 if (!GetParam().isCXX()) {
1542 return;
1543 }
1544 EXPECT_TRUE(
1545 matches("template <typename T, int Size> class array { T data[Size]; };",
1546 dependentSizedArrayType()));
1547 EXPECT_TRUE(
1548 notMatches("int a[42]; int b[] = { 2, 3 }; void f() { int c[b[0]]; }",
1549 dependentSizedArrayType()));
1550 }
1551
TEST_P(ASTMatchersTest,IncompleteArrayType)1552 TEST_P(ASTMatchersTest, IncompleteArrayType) {
1553 EXPECT_TRUE(matches("int a[] = { 2, 3 };", incompleteArrayType()));
1554 EXPECT_TRUE(matches("void f(int a[]) {}", incompleteArrayType()));
1555
1556 EXPECT_TRUE(notMatches("int a[42]; void f() { int b[a[0]]; }",
1557 incompleteArrayType()));
1558 }
1559
TEST_P(ASTMatchersTest,VariableArrayType)1560 TEST_P(ASTMatchersTest, VariableArrayType) {
1561 EXPECT_TRUE(matches("void f(int b) { int a[b]; }", variableArrayType()));
1562 EXPECT_TRUE(notMatches("int a[] = {2, 3}; int b[42];", variableArrayType()));
1563
1564 EXPECT_TRUE(matches("void f(int b) { int a[b]; }",
1565 variableArrayType(hasSizeExpr(ignoringImpCasts(
1566 declRefExpr(to(varDecl(hasName("b")))))))));
1567 }
1568
TEST_P(ASTMatchersTest,AtomicType)1569 TEST_P(ASTMatchersTest, AtomicType) {
1570 if (llvm::Triple(llvm::sys::getDefaultTargetTriple()).getOS() !=
1571 llvm::Triple::Win32) {
1572 // FIXME: Make this work for MSVC.
1573 EXPECT_TRUE(matches("_Atomic(int) i;", atomicType()));
1574
1575 EXPECT_TRUE(
1576 matches("_Atomic(int) i;", atomicType(hasValueType(isInteger()))));
1577 EXPECT_TRUE(
1578 notMatches("_Atomic(float) f;", atomicType(hasValueType(isInteger()))));
1579 }
1580 }
1581
TEST_P(ASTMatchersTest,AutoType)1582 TEST_P(ASTMatchersTest, AutoType) {
1583 if (!GetParam().isCXX11OrLater()) {
1584 return;
1585 }
1586 EXPECT_TRUE(matches("auto i = 2;", autoType()));
1587 EXPECT_TRUE(matches("int v[] = { 2, 3 }; void f() { for (int i : v) {} }",
1588 autoType()));
1589
1590 EXPECT_TRUE(matches("auto i = 2;", varDecl(hasType(isInteger()))));
1591 EXPECT_TRUE(matches("struct X{}; auto x = X{};",
1592 varDecl(hasType(recordDecl(hasName("X"))))));
1593
1594 // FIXME: Matching against the type-as-written can't work here, because the
1595 // type as written was not deduced.
1596 // EXPECT_TRUE(matches("auto a = 1;",
1597 // autoType(hasDeducedType(isInteger()))));
1598 // EXPECT_TRUE(notMatches("auto b = 2.0;",
1599 // autoType(hasDeducedType(isInteger()))));
1600 }
1601
TEST_P(ASTMatchersTest,DecltypeType)1602 TEST_P(ASTMatchersTest, DecltypeType) {
1603 if (!GetParam().isCXX11OrLater()) {
1604 return;
1605 }
1606 EXPECT_TRUE(matches("decltype(1 + 1) sum = 1 + 1;", decltypeType()));
1607 EXPECT_TRUE(matches("decltype(1 + 1) sum = 1 + 1;",
1608 decltypeType(hasUnderlyingType(isInteger()))));
1609 }
1610
TEST_P(ASTMatchersTest,FunctionType)1611 TEST_P(ASTMatchersTest, FunctionType) {
1612 EXPECT_TRUE(matches("int (*f)(int);", functionType()));
1613 EXPECT_TRUE(matches("void f(int i) {}", functionType()));
1614 }
1615
TEST_P(ASTMatchersTest,IgnoringParens_Type)1616 TEST_P(ASTMatchersTest, IgnoringParens_Type) {
1617 EXPECT_TRUE(
1618 notMatches("void (*fp)(void);", pointerType(pointee(functionType()))));
1619 EXPECT_TRUE(matches("void (*fp)(void);",
1620 pointerType(pointee(ignoringParens(functionType())))));
1621 }
1622
TEST_P(ASTMatchersTest,FunctionProtoType)1623 TEST_P(ASTMatchersTest, FunctionProtoType) {
1624 EXPECT_TRUE(matches("int (*f)(int);", functionProtoType()));
1625 EXPECT_TRUE(matches("void f(int i);", functionProtoType()));
1626 EXPECT_TRUE(matches("void f(void);", functionProtoType(parameterCountIs(0))));
1627 }
1628
TEST_P(ASTMatchersTest,FunctionProtoType_C)1629 TEST_P(ASTMatchersTest, FunctionProtoType_C) {
1630 if (!GetParam().isC()) {
1631 return;
1632 }
1633 EXPECT_TRUE(notMatches("void f();", functionProtoType()));
1634 }
1635
TEST_P(ASTMatchersTest,FunctionProtoType_CXX)1636 TEST_P(ASTMatchersTest, FunctionProtoType_CXX) {
1637 if (!GetParam().isCXX()) {
1638 return;
1639 }
1640 EXPECT_TRUE(matches("void f();", functionProtoType(parameterCountIs(0))));
1641 }
1642
TEST_P(ASTMatchersTest,ParenType)1643 TEST_P(ASTMatchersTest, ParenType) {
1644 EXPECT_TRUE(
1645 matches("int (*array)[4];", varDecl(hasType(pointsTo(parenType())))));
1646 EXPECT_TRUE(notMatches("int *array[4];", varDecl(hasType(parenType()))));
1647
1648 EXPECT_TRUE(matches(
1649 "int (*ptr_to_func)(int);",
1650 varDecl(hasType(pointsTo(parenType(innerType(functionType())))))));
1651 EXPECT_TRUE(notMatches(
1652 "int (*ptr_to_array)[4];",
1653 varDecl(hasType(pointsTo(parenType(innerType(functionType())))))));
1654 }
1655
TEST_P(ASTMatchersTest,PointerType)1656 TEST_P(ASTMatchersTest, PointerType) {
1657 // FIXME: Reactive when these tests can be more specific (not matching
1658 // implicit code on certain platforms), likely when we have hasDescendant for
1659 // Types/TypeLocs.
1660 // EXPECT_TRUE(matchAndVerifyResultTrue(
1661 // "int* a;",
1662 // pointerTypeLoc(pointeeLoc(typeLoc().bind("loc"))),
1663 // std::make_unique<VerifyIdIsBoundTo<TypeLoc>>("loc", 1)));
1664 // EXPECT_TRUE(matchAndVerifyResultTrue(
1665 // "int* a;",
1666 // pointerTypeLoc().bind("loc"),
1667 // std::make_unique<VerifyIdIsBoundTo<TypeLoc>>("loc", 1)));
1668 EXPECT_TRUE(matches("int** a;", loc(pointerType(pointee(qualType())))));
1669 EXPECT_TRUE(matches("int** a;", loc(pointerType(pointee(pointerType())))));
1670 EXPECT_TRUE(matches("int* b; int* * const a = &b;",
1671 loc(qualType(isConstQualified(), pointerType()))));
1672
1673 StringRef Fragment = "int *ptr;";
1674 EXPECT_TRUE(notMatches(Fragment,
1675 varDecl(hasName("ptr"), hasType(blockPointerType()))));
1676 EXPECT_TRUE(notMatches(
1677 Fragment, varDecl(hasName("ptr"), hasType(memberPointerType()))));
1678 EXPECT_TRUE(
1679 matches(Fragment, varDecl(hasName("ptr"), hasType(pointerType()))));
1680 EXPECT_TRUE(
1681 notMatches(Fragment, varDecl(hasName("ptr"), hasType(referenceType()))));
1682 }
1683
TEST_P(ASTMatchersTest,PointerType_CXX)1684 TEST_P(ASTMatchersTest, PointerType_CXX) {
1685 if (!GetParam().isCXX()) {
1686 return;
1687 }
1688 StringRef Fragment = "struct A { int i; }; int A::* ptr = &A::i;";
1689 EXPECT_TRUE(notMatches(Fragment,
1690 varDecl(hasName("ptr"), hasType(blockPointerType()))));
1691 EXPECT_TRUE(
1692 matches(Fragment, varDecl(hasName("ptr"), hasType(memberPointerType()))));
1693 EXPECT_TRUE(
1694 notMatches(Fragment, varDecl(hasName("ptr"), hasType(pointerType()))));
1695 EXPECT_TRUE(
1696 notMatches(Fragment, varDecl(hasName("ptr"), hasType(referenceType()))));
1697 EXPECT_TRUE(notMatches(
1698 Fragment, varDecl(hasName("ptr"), hasType(lValueReferenceType()))));
1699 EXPECT_TRUE(notMatches(
1700 Fragment, varDecl(hasName("ptr"), hasType(rValueReferenceType()))));
1701
1702 Fragment = "int a; int &ref = a;";
1703 EXPECT_TRUE(notMatches(Fragment,
1704 varDecl(hasName("ref"), hasType(blockPointerType()))));
1705 EXPECT_TRUE(notMatches(
1706 Fragment, varDecl(hasName("ref"), hasType(memberPointerType()))));
1707 EXPECT_TRUE(
1708 notMatches(Fragment, varDecl(hasName("ref"), hasType(pointerType()))));
1709 EXPECT_TRUE(
1710 matches(Fragment, varDecl(hasName("ref"), hasType(referenceType()))));
1711 EXPECT_TRUE(matches(Fragment,
1712 varDecl(hasName("ref"), hasType(lValueReferenceType()))));
1713 EXPECT_TRUE(notMatches(
1714 Fragment, varDecl(hasName("ref"), hasType(rValueReferenceType()))));
1715 }
1716
TEST_P(ASTMatchersTest,PointerType_CXX11)1717 TEST_P(ASTMatchersTest, PointerType_CXX11) {
1718 if (!GetParam().isCXX11OrLater()) {
1719 return;
1720 }
1721 StringRef Fragment = "int &&ref = 2;";
1722 EXPECT_TRUE(notMatches(Fragment,
1723 varDecl(hasName("ref"), hasType(blockPointerType()))));
1724 EXPECT_TRUE(notMatches(
1725 Fragment, varDecl(hasName("ref"), hasType(memberPointerType()))));
1726 EXPECT_TRUE(
1727 notMatches(Fragment, varDecl(hasName("ref"), hasType(pointerType()))));
1728 EXPECT_TRUE(
1729 matches(Fragment, varDecl(hasName("ref"), hasType(referenceType()))));
1730 EXPECT_TRUE(notMatches(
1731 Fragment, varDecl(hasName("ref"), hasType(lValueReferenceType()))));
1732 EXPECT_TRUE(matches(Fragment,
1733 varDecl(hasName("ref"), hasType(rValueReferenceType()))));
1734 }
1735
TEST_P(ASTMatchersTest,AutoRefTypes)1736 TEST_P(ASTMatchersTest, AutoRefTypes) {
1737 if (!GetParam().isCXX11OrLater()) {
1738 return;
1739 }
1740
1741 StringRef Fragment = "auto a = 1;"
1742 "auto b = a;"
1743 "auto &c = a;"
1744 "auto &&d = c;"
1745 "auto &&e = 2;";
1746 EXPECT_TRUE(
1747 notMatches(Fragment, varDecl(hasName("a"), hasType(referenceType()))));
1748 EXPECT_TRUE(
1749 notMatches(Fragment, varDecl(hasName("b"), hasType(referenceType()))));
1750 EXPECT_TRUE(
1751 matches(Fragment, varDecl(hasName("c"), hasType(referenceType()))));
1752 EXPECT_TRUE(
1753 matches(Fragment, varDecl(hasName("c"), hasType(lValueReferenceType()))));
1754 EXPECT_TRUE(notMatches(
1755 Fragment, varDecl(hasName("c"), hasType(rValueReferenceType()))));
1756 EXPECT_TRUE(
1757 matches(Fragment, varDecl(hasName("d"), hasType(referenceType()))));
1758 EXPECT_TRUE(
1759 matches(Fragment, varDecl(hasName("d"), hasType(lValueReferenceType()))));
1760 EXPECT_TRUE(notMatches(
1761 Fragment, varDecl(hasName("d"), hasType(rValueReferenceType()))));
1762 EXPECT_TRUE(
1763 matches(Fragment, varDecl(hasName("e"), hasType(referenceType()))));
1764 EXPECT_TRUE(notMatches(
1765 Fragment, varDecl(hasName("e"), hasType(lValueReferenceType()))));
1766 EXPECT_TRUE(
1767 matches(Fragment, varDecl(hasName("e"), hasType(rValueReferenceType()))));
1768 }
1769
TEST_P(ASTMatchersTest,EnumType)1770 TEST_P(ASTMatchersTest, EnumType) {
1771 EXPECT_TRUE(
1772 matches("enum Color { Green }; enum Color color;", loc(enumType())));
1773 }
1774
TEST_P(ASTMatchersTest,EnumType_CXX)1775 TEST_P(ASTMatchersTest, EnumType_CXX) {
1776 if (!GetParam().isCXX()) {
1777 return;
1778 }
1779 EXPECT_TRUE(matches("enum Color { Green }; Color color;", loc(enumType())));
1780 }
1781
TEST_P(ASTMatchersTest,EnumType_CXX11)1782 TEST_P(ASTMatchersTest, EnumType_CXX11) {
1783 if (!GetParam().isCXX11OrLater()) {
1784 return;
1785 }
1786 EXPECT_TRUE(
1787 matches("enum class Color { Green }; Color color;", loc(enumType())));
1788 }
1789
TEST_P(ASTMatchersTest,PointerType_MatchesPointersToConstTypes)1790 TEST_P(ASTMatchersTest, PointerType_MatchesPointersToConstTypes) {
1791 EXPECT_TRUE(matches("int b; int * const a = &b;", loc(pointerType())));
1792 EXPECT_TRUE(matches("int b; int * const a = &b;", loc(pointerType())));
1793 EXPECT_TRUE(matches("int b; const int * a = &b;",
1794 loc(pointerType(pointee(builtinType())))));
1795 EXPECT_TRUE(matches("int b; const int * a = &b;",
1796 pointerType(pointee(builtinType()))));
1797 }
1798
TEST_P(ASTMatchersTest,TypedefType)1799 TEST_P(ASTMatchersTest, TypedefType) {
1800 EXPECT_TRUE(matches("typedef int X; X a;",
1801 varDecl(hasName("a"), hasType(typedefType()))));
1802 }
1803
TEST_P(ASTMatchersTest,TemplateSpecializationType)1804 TEST_P(ASTMatchersTest, TemplateSpecializationType) {
1805 if (!GetParam().isCXX()) {
1806 return;
1807 }
1808 EXPECT_TRUE(matches("template <typename T> class A{}; A<int> a;",
1809 templateSpecializationType()));
1810 }
1811
TEST_P(ASTMatchersTest,DeducedTemplateSpecializationType)1812 TEST_P(ASTMatchersTest, DeducedTemplateSpecializationType) {
1813 if (!GetParam().isCXX17OrLater()) {
1814 return;
1815 }
1816 EXPECT_TRUE(
1817 matches("template <typename T> class A{ public: A(T) {} }; A a(1);",
1818 deducedTemplateSpecializationType()));
1819 }
1820
TEST_P(ASTMatchersTest,RecordType)1821 TEST_P(ASTMatchersTest, RecordType) {
1822 EXPECT_TRUE(matches("struct S {}; struct S s;",
1823 recordType(hasDeclaration(recordDecl(hasName("S"))))));
1824 EXPECT_TRUE(notMatches("int i;",
1825 recordType(hasDeclaration(recordDecl(hasName("S"))))));
1826 }
1827
TEST_P(ASTMatchersTest,RecordType_CXX)1828 TEST_P(ASTMatchersTest, RecordType_CXX) {
1829 if (!GetParam().isCXX()) {
1830 return;
1831 }
1832 EXPECT_TRUE(matches("class C {}; C c;", recordType()));
1833 EXPECT_TRUE(matches("struct S {}; S s;",
1834 recordType(hasDeclaration(recordDecl(hasName("S"))))));
1835 }
1836
TEST_P(ASTMatchersTest,ElaboratedType)1837 TEST_P(ASTMatchersTest, ElaboratedType) {
1838 if (!GetParam().isCXX()) {
1839 // FIXME: Add a test for `elaboratedType()` that does not depend on C++.
1840 return;
1841 }
1842 EXPECT_TRUE(matches("namespace N {"
1843 " namespace M {"
1844 " class D {};"
1845 " }"
1846 "}"
1847 "N::M::D d;",
1848 elaboratedType()));
1849 EXPECT_TRUE(matches("class C {} c;", elaboratedType()));
1850 EXPECT_TRUE(notMatches("class C {}; C c;", elaboratedType()));
1851 }
1852
TEST_P(ASTMatchersTest,SubstTemplateTypeParmType)1853 TEST_P(ASTMatchersTest, SubstTemplateTypeParmType) {
1854 if (!GetParam().isCXX()) {
1855 return;
1856 }
1857 StringRef code = "template <typename T>"
1858 "int F() {"
1859 " return 1 + T();"
1860 "}"
1861 "int i = F<int>();";
1862 EXPECT_FALSE(matches(code, binaryOperator(hasLHS(
1863 expr(hasType(substTemplateTypeParmType()))))));
1864 EXPECT_TRUE(matches(code, binaryOperator(hasRHS(
1865 expr(hasType(substTemplateTypeParmType()))))));
1866 }
1867
TEST_P(ASTMatchersTest,NestedNameSpecifier)1868 TEST_P(ASTMatchersTest, NestedNameSpecifier) {
1869 if (!GetParam().isCXX()) {
1870 return;
1871 }
1872 EXPECT_TRUE(
1873 matches("namespace ns { struct A {}; } ns::A a;", nestedNameSpecifier()));
1874 EXPECT_TRUE(matches("template <typename T> class A { typename T::B b; };",
1875 nestedNameSpecifier()));
1876 EXPECT_TRUE(
1877 matches("struct A { void f(); }; void A::f() {}", nestedNameSpecifier()));
1878 EXPECT_TRUE(matches("namespace a { namespace b {} } namespace ab = a::b;",
1879 nestedNameSpecifier()));
1880
1881 EXPECT_TRUE(matches("struct A { static void f() {} }; void g() { A::f(); }",
1882 nestedNameSpecifier()));
1883 EXPECT_TRUE(
1884 notMatches("struct A { static void f() {} }; void g(A* a) { a->f(); }",
1885 nestedNameSpecifier()));
1886 }
1887
TEST_P(ASTMatchersTest,Attr)1888 TEST_P(ASTMatchersTest, Attr) {
1889 // Windows adds some implicit attributes.
1890 bool AutomaticAttributes = StringRef(GetParam().Target).contains("win32");
1891 if (GetParam().isCXX11OrLater()) {
1892 EXPECT_TRUE(matches("struct [[clang::warn_unused_result]] F{};", attr()));
1893
1894 // Unknown attributes are not parsed into an AST node.
1895 if (!AutomaticAttributes) {
1896 EXPECT_TRUE(notMatches("int x [[unknownattr]];", attr()));
1897 }
1898 }
1899 if (GetParam().isCXX17OrLater()) {
1900 EXPECT_TRUE(matches("struct [[nodiscard]] F{};", attr()));
1901 }
1902 EXPECT_TRUE(matches("int x(int * __attribute__((nonnull)) );", attr()));
1903 if (!AutomaticAttributes) {
1904 EXPECT_TRUE(notMatches("struct F{}; int x(int *);", attr()));
1905 // Some known attributes are not parsed into an AST node.
1906 EXPECT_TRUE(notMatches("typedef int x __attribute__((ext_vector_type(1)));",
1907 attr()));
1908 }
1909 }
1910
TEST_P(ASTMatchersTest,NullStmt)1911 TEST_P(ASTMatchersTest, NullStmt) {
1912 EXPECT_TRUE(matches("void f() {int i;;}", nullStmt()));
1913 EXPECT_TRUE(notMatches("void f() {int i;}", nullStmt()));
1914 }
1915
TEST_P(ASTMatchersTest,NamespaceAliasDecl)1916 TEST_P(ASTMatchersTest, NamespaceAliasDecl) {
1917 if (!GetParam().isCXX()) {
1918 return;
1919 }
1920 EXPECT_TRUE(matches("namespace test {} namespace alias = ::test;",
1921 namespaceAliasDecl(hasName("alias"))));
1922 }
1923
TEST_P(ASTMatchersTest,NestedNameSpecifier_MatchesTypes)1924 TEST_P(ASTMatchersTest, NestedNameSpecifier_MatchesTypes) {
1925 if (!GetParam().isCXX()) {
1926 return;
1927 }
1928 NestedNameSpecifierMatcher Matcher = nestedNameSpecifier(
1929 specifiesType(hasDeclaration(recordDecl(hasName("A")))));
1930 EXPECT_TRUE(matches("struct A { struct B {}; }; A::B b;", Matcher));
1931 EXPECT_TRUE(
1932 matches("struct A { struct B { struct C {}; }; }; A::B::C c;", Matcher));
1933 EXPECT_TRUE(notMatches("namespace A { struct B {}; } A::B b;", Matcher));
1934 }
1935
TEST_P(ASTMatchersTest,NestedNameSpecifier_MatchesNamespaceDecls)1936 TEST_P(ASTMatchersTest, NestedNameSpecifier_MatchesNamespaceDecls) {
1937 if (!GetParam().isCXX()) {
1938 return;
1939 }
1940 NestedNameSpecifierMatcher Matcher =
1941 nestedNameSpecifier(specifiesNamespace(hasName("ns")));
1942 EXPECT_TRUE(matches("namespace ns { struct A {}; } ns::A a;", Matcher));
1943 EXPECT_TRUE(notMatches("namespace xx { struct A {}; } xx::A a;", Matcher));
1944 EXPECT_TRUE(notMatches("struct ns { struct A {}; }; ns::A a;", Matcher));
1945 }
1946
TEST_P(ASTMatchersTest,NestedNameSpecifier_MatchesNestedNameSpecifierPrefixes)1947 TEST_P(ASTMatchersTest,
1948 NestedNameSpecifier_MatchesNestedNameSpecifierPrefixes) {
1949 if (!GetParam().isCXX()) {
1950 return;
1951 }
1952 EXPECT_TRUE(matches(
1953 "struct A { struct B { struct C {}; }; }; A::B::C c;",
1954 nestedNameSpecifier(hasPrefix(specifiesType(asString("struct A"))))));
1955 EXPECT_TRUE(matches("struct A { struct B { struct C {}; }; }; A::B::C c;",
1956 nestedNameSpecifierLoc(hasPrefix(specifiesTypeLoc(
1957 loc(qualType(asString("struct A"))))))));
1958 EXPECT_TRUE(matches(
1959 "namespace N { struct A { struct B { struct C {}; }; }; } N::A::B::C c;",
1960 nestedNameSpecifierLoc(hasPrefix(
1961 specifiesTypeLoc(loc(qualType(asString("struct N::A"))))))));
1962 }
1963
1964 template <typename T>
1965 class VerifyAncestorHasChildIsEqual : public BoundNodesCallback {
1966 public:
run(const BoundNodes * Nodes)1967 bool run(const BoundNodes *Nodes) override { return false; }
1968
run(const BoundNodes * Nodes,ASTContext * Context)1969 bool run(const BoundNodes *Nodes, ASTContext *Context) override {
1970 const T *Node = Nodes->getNodeAs<T>("");
1971 return verify(*Nodes, *Context, Node);
1972 }
1973
verify(const BoundNodes & Nodes,ASTContext & Context,const Stmt * Node)1974 bool verify(const BoundNodes &Nodes, ASTContext &Context, const Stmt *Node) {
1975 // Use the original typed pointer to verify we can pass pointers to subtypes
1976 // to equalsNode.
1977 const T *TypedNode = cast<T>(Node);
1978 return selectFirst<T>(
1979 "", match(stmt(hasParent(
1980 stmt(has(stmt(equalsNode(TypedNode)))).bind(""))),
1981 *Node, Context)) != nullptr;
1982 }
verify(const BoundNodes & Nodes,ASTContext & Context,const Decl * Node)1983 bool verify(const BoundNodes &Nodes, ASTContext &Context, const Decl *Node) {
1984 // Use the original typed pointer to verify we can pass pointers to subtypes
1985 // to equalsNode.
1986 const T *TypedNode = cast<T>(Node);
1987 return selectFirst<T>(
1988 "", match(decl(hasParent(
1989 decl(has(decl(equalsNode(TypedNode)))).bind(""))),
1990 *Node, Context)) != nullptr;
1991 }
verify(const BoundNodes & Nodes,ASTContext & Context,const Type * Node)1992 bool verify(const BoundNodes &Nodes, ASTContext &Context, const Type *Node) {
1993 // Use the original typed pointer to verify we can pass pointers to subtypes
1994 // to equalsNode.
1995 const T *TypedNode = cast<T>(Node);
1996 const auto *Dec = Nodes.getNodeAs<FieldDecl>("decl");
1997 return selectFirst<T>(
1998 "", match(fieldDecl(hasParent(decl(has(fieldDecl(
1999 hasType(type(equalsNode(TypedNode)).bind(""))))))),
2000 *Dec, Context)) != nullptr;
2001 }
2002 };
2003
TEST_P(ASTMatchersTest,IsEqualTo_MatchesNodesByIdentity)2004 TEST_P(ASTMatchersTest, IsEqualTo_MatchesNodesByIdentity) {
2005 EXPECT_TRUE(matchAndVerifyResultTrue(
2006 "void f() { if (1) if(1) {} }", ifStmt().bind(""),
2007 std::make_unique<VerifyAncestorHasChildIsEqual<IfStmt>>()));
2008 }
2009
TEST_P(ASTMatchersTest,IsEqualTo_MatchesNodesByIdentity_Cxx)2010 TEST_P(ASTMatchersTest, IsEqualTo_MatchesNodesByIdentity_Cxx) {
2011 if (!GetParam().isCXX()) {
2012 return;
2013 }
2014 EXPECT_TRUE(matchAndVerifyResultTrue(
2015 "class X { class Y {}; };", recordDecl(hasName("::X::Y")).bind(""),
2016 std::make_unique<VerifyAncestorHasChildIsEqual<CXXRecordDecl>>()));
2017 EXPECT_TRUE(matchAndVerifyResultTrue(
2018 "class X { class Y {} y; };",
2019 fieldDecl(hasName("y"), hasType(type().bind(""))).bind("decl"),
2020 std::make_unique<VerifyAncestorHasChildIsEqual<Type>>()));
2021 }
2022
TEST_P(ASTMatchersTest,TypedefDecl)2023 TEST_P(ASTMatchersTest, TypedefDecl) {
2024 EXPECT_TRUE(matches("typedef int typedefDeclTest;",
2025 typedefDecl(hasName("typedefDeclTest"))));
2026 }
2027
TEST_P(ASTMatchersTest,TypedefDecl_Cxx)2028 TEST_P(ASTMatchersTest, TypedefDecl_Cxx) {
2029 if (!GetParam().isCXX11OrLater()) {
2030 return;
2031 }
2032 EXPECT_TRUE(notMatches("using typedefDeclTest = int;",
2033 typedefDecl(hasName("typedefDeclTest"))));
2034 }
2035
TEST_P(ASTMatchersTest,TypeAliasDecl)2036 TEST_P(ASTMatchersTest, TypeAliasDecl) {
2037 EXPECT_TRUE(notMatches("typedef int typeAliasTest;",
2038 typeAliasDecl(hasName("typeAliasTest"))));
2039 }
2040
TEST_P(ASTMatchersTest,TypeAliasDecl_CXX)2041 TEST_P(ASTMatchersTest, TypeAliasDecl_CXX) {
2042 if (!GetParam().isCXX11OrLater()) {
2043 return;
2044 }
2045 EXPECT_TRUE(matches("using typeAliasTest = int;",
2046 typeAliasDecl(hasName("typeAliasTest"))));
2047 }
2048
TEST_P(ASTMatchersTest,TypedefNameDecl)2049 TEST_P(ASTMatchersTest, TypedefNameDecl) {
2050 EXPECT_TRUE(matches("typedef int typedefNameDeclTest1;",
2051 typedefNameDecl(hasName("typedefNameDeclTest1"))));
2052 }
2053
TEST_P(ASTMatchersTest,TypedefNameDecl_CXX)2054 TEST_P(ASTMatchersTest, TypedefNameDecl_CXX) {
2055 if (!GetParam().isCXX11OrLater()) {
2056 return;
2057 }
2058 EXPECT_TRUE(matches("using typedefNameDeclTest = int;",
2059 typedefNameDecl(hasName("typedefNameDeclTest"))));
2060 }
2061
TEST_P(ASTMatchersTest,TypeAliasTemplateDecl)2062 TEST_P(ASTMatchersTest, TypeAliasTemplateDecl) {
2063 if (!GetParam().isCXX11OrLater()) {
2064 return;
2065 }
2066 StringRef Code = R"(
2067 template <typename T>
2068 class X { T t; };
2069
2070 template <typename T>
2071 using typeAliasTemplateDecl = X<T>;
2072
2073 using typeAliasDecl = X<int>;
2074 )";
2075 EXPECT_TRUE(
2076 matches(Code, typeAliasTemplateDecl(hasName("typeAliasTemplateDecl"))));
2077 EXPECT_TRUE(
2078 notMatches(Code, typeAliasTemplateDecl(hasName("typeAliasDecl"))));
2079 }
2080
TEST_P(ASTMatchersTest,QualifiedTypeLocTest_BindsToConstIntVarDecl)2081 TEST_P(ASTMatchersTest, QualifiedTypeLocTest_BindsToConstIntVarDecl) {
2082 EXPECT_TRUE(matches("const int x = 0;",
2083 qualifiedTypeLoc(loc(asString("const int")))));
2084 }
2085
TEST_P(ASTMatchersTest,QualifiedTypeLocTest_BindsToConstIntFunctionDecl)2086 TEST_P(ASTMatchersTest, QualifiedTypeLocTest_BindsToConstIntFunctionDecl) {
2087 EXPECT_TRUE(matches("const int f() { return 5; }",
2088 qualifiedTypeLoc(loc(asString("const int")))));
2089 }
2090
TEST_P(ASTMatchersTest,QualifiedTypeLocTest_DoesNotBindToUnqualifiedVarDecl)2091 TEST_P(ASTMatchersTest, QualifiedTypeLocTest_DoesNotBindToUnqualifiedVarDecl) {
2092 EXPECT_TRUE(notMatches("int x = 0;", qualifiedTypeLoc(loc(asString("int")))));
2093 }
2094
TEST_P(ASTMatchersTest,QualifiedTypeLocTest_IntDoesNotBindToConstIntDecl)2095 TEST_P(ASTMatchersTest, QualifiedTypeLocTest_IntDoesNotBindToConstIntDecl) {
2096 EXPECT_TRUE(
2097 notMatches("const int x = 0;", qualifiedTypeLoc(loc(asString("int")))));
2098 }
2099
TEST_P(ASTMatchersTest,QualifiedTypeLocTest_IntDoesNotBindToConstFloatDecl)2100 TEST_P(ASTMatchersTest, QualifiedTypeLocTest_IntDoesNotBindToConstFloatDecl) {
2101 EXPECT_TRUE(
2102 notMatches("const float x = 0;", qualifiedTypeLoc(loc(asString("int")))));
2103 }
2104
TEST_P(ASTMatchersTest,PointerTypeLocTest_BindsToAnyPointerTypeLoc)2105 TEST_P(ASTMatchersTest, PointerTypeLocTest_BindsToAnyPointerTypeLoc) {
2106 auto matcher = varDecl(hasName("x"), hasTypeLoc(pointerTypeLoc()));
2107 EXPECT_TRUE(matches("int* x;", matcher));
2108 EXPECT_TRUE(matches("float* x;", matcher));
2109 EXPECT_TRUE(matches("char* x;", matcher));
2110 EXPECT_TRUE(matches("void* x;", matcher));
2111 }
2112
TEST_P(ASTMatchersTest,PointerTypeLocTest_DoesNotBindToNonPointerTypeLoc)2113 TEST_P(ASTMatchersTest, PointerTypeLocTest_DoesNotBindToNonPointerTypeLoc) {
2114 auto matcher = varDecl(hasName("x"), hasTypeLoc(pointerTypeLoc()));
2115 EXPECT_TRUE(notMatches("int x;", matcher));
2116 EXPECT_TRUE(notMatches("float x;", matcher));
2117 EXPECT_TRUE(notMatches("char x;", matcher));
2118 }
2119
TEST_P(ASTMatchersTest,ReferenceTypeLocTest_BindsToAnyReferenceTypeLoc)2120 TEST_P(ASTMatchersTest, ReferenceTypeLocTest_BindsToAnyReferenceTypeLoc) {
2121 if (!GetParam().isCXX()) {
2122 return;
2123 }
2124 auto matcher = varDecl(hasName("r"), hasTypeLoc(referenceTypeLoc()));
2125 EXPECT_TRUE(matches("int rr = 3; int& r = rr;", matcher));
2126 EXPECT_TRUE(matches("int rr = 3; auto& r = rr;", matcher));
2127 EXPECT_TRUE(matches("int rr = 3; const int& r = rr;", matcher));
2128 EXPECT_TRUE(matches("float rr = 3.0; float& r = rr;", matcher));
2129 EXPECT_TRUE(matches("char rr = 'a'; char& r = rr;", matcher));
2130 }
2131
TEST_P(ASTMatchersTest,ReferenceTypeLocTest_DoesNotBindToNonReferenceTypeLoc)2132 TEST_P(ASTMatchersTest, ReferenceTypeLocTest_DoesNotBindToNonReferenceTypeLoc) {
2133 auto matcher = varDecl(hasName("r"), hasTypeLoc(referenceTypeLoc()));
2134 EXPECT_TRUE(notMatches("int r;", matcher));
2135 EXPECT_TRUE(notMatches("int r = 3;", matcher));
2136 EXPECT_TRUE(notMatches("const int r = 3;", matcher));
2137 EXPECT_TRUE(notMatches("int* r;", matcher));
2138 EXPECT_TRUE(notMatches("float r;", matcher));
2139 EXPECT_TRUE(notMatches("char r;", matcher));
2140 }
2141
TEST_P(ASTMatchersTest,ReferenceTypeLocTest_BindsToAnyRvalueReferenceTypeLoc)2142 TEST_P(ASTMatchersTest, ReferenceTypeLocTest_BindsToAnyRvalueReferenceTypeLoc) {
2143 if (!GetParam().isCXX()) {
2144 return;
2145 }
2146 auto matcher = varDecl(hasName("r"), hasTypeLoc(referenceTypeLoc()));
2147 EXPECT_TRUE(matches("int&& r = 3;", matcher));
2148 EXPECT_TRUE(matches("auto&& r = 3;", matcher));
2149 EXPECT_TRUE(matches("float&& r = 3.0;", matcher));
2150 }
2151
TEST_P(ASTMatchersTest,TemplateSpecializationTypeLocTest_BindsToTemplateSpecializationExplicitInstantiation)2152 TEST_P(
2153 ASTMatchersTest,
2154 TemplateSpecializationTypeLocTest_BindsToTemplateSpecializationExplicitInstantiation) {
2155 if (!GetParam().isCXX()) {
2156 return;
2157 }
2158 EXPECT_TRUE(
2159 matches("template <typename T> class C {}; template class C<int>;",
2160 classTemplateSpecializationDecl(
2161 hasName("C"), hasTypeLoc(templateSpecializationTypeLoc()))));
2162 }
2163
TEST_P(ASTMatchersTest,TemplateSpecializationTypeLocTest_BindsToVarDeclTemplateSpecialization)2164 TEST_P(ASTMatchersTest,
2165 TemplateSpecializationTypeLocTest_BindsToVarDeclTemplateSpecialization) {
2166 if (!GetParam().isCXX()) {
2167 return;
2168 }
2169 EXPECT_TRUE(matches(
2170 "template <typename T> class C {}; C<char> var;",
2171 varDecl(hasName("var"), hasTypeLoc(templateSpecializationTypeLoc()))));
2172 }
2173
TEST_P(ASTMatchersTest,TemplateSpecializationTypeLocTest_DoesNotBindToNonTemplateSpecialization)2174 TEST_P(
2175 ASTMatchersTest,
2176 TemplateSpecializationTypeLocTest_DoesNotBindToNonTemplateSpecialization) {
2177 if (!GetParam().isCXX()) {
2178 return;
2179 }
2180 EXPECT_TRUE(notMatches(
2181 "class C {}; C var;",
2182 varDecl(hasName("var"), hasTypeLoc(templateSpecializationTypeLoc()))));
2183 }
2184
TEST_P(ASTMatchersTest,ElaboratedTypeLocTest_BindsToElaboratedObjectDeclaration)2185 TEST_P(ASTMatchersTest,
2186 ElaboratedTypeLocTest_BindsToElaboratedObjectDeclaration) {
2187 if (!GetParam().isCXX()) {
2188 return;
2189 }
2190 EXPECT_TRUE(matches("class C {}; class C c;",
2191 varDecl(hasName("c"), hasTypeLoc(elaboratedTypeLoc()))));
2192 }
2193
TEST_P(ASTMatchersTest,ElaboratedTypeLocTest_BindsToNamespaceElaboratedObjectDeclaration)2194 TEST_P(ASTMatchersTest,
2195 ElaboratedTypeLocTest_BindsToNamespaceElaboratedObjectDeclaration) {
2196 if (!GetParam().isCXX()) {
2197 return;
2198 }
2199 EXPECT_TRUE(matches("namespace N { class D {}; } N::D d;",
2200 varDecl(hasName("d"), hasTypeLoc(elaboratedTypeLoc()))));
2201 }
2202
TEST_P(ASTMatchersTest,ElaboratedTypeLocTest_BindsToElaboratedStructDeclaration)2203 TEST_P(ASTMatchersTest,
2204 ElaboratedTypeLocTest_BindsToElaboratedStructDeclaration) {
2205 EXPECT_TRUE(matches("struct s {}; struct s ss;",
2206 varDecl(hasName("ss"), hasTypeLoc(elaboratedTypeLoc()))));
2207 }
2208
TEST_P(ASTMatchersTest,ElaboratedTypeLocTest_DoesNotBindToNonElaboratedObjectDeclaration)2209 TEST_P(ASTMatchersTest,
2210 ElaboratedTypeLocTest_DoesNotBindToNonElaboratedObjectDeclaration) {
2211 if (!GetParam().isCXX()) {
2212 return;
2213 }
2214 EXPECT_TRUE(
2215 notMatches("class C {}; C c;",
2216 varDecl(hasName("c"), hasTypeLoc(elaboratedTypeLoc()))));
2217 }
2218
TEST_P(ASTMatchersTest,ElaboratedTypeLocTest_DoesNotBindToNamespaceNonElaboratedObjectDeclaration)2219 TEST_P(
2220 ASTMatchersTest,
2221 ElaboratedTypeLocTest_DoesNotBindToNamespaceNonElaboratedObjectDeclaration) {
2222 if (!GetParam().isCXX()) {
2223 return;
2224 }
2225 EXPECT_TRUE(
2226 notMatches("namespace N { class D {}; } using N::D; D d;",
2227 varDecl(hasName("d"), hasTypeLoc(elaboratedTypeLoc()))));
2228 }
2229
TEST_P(ASTMatchersTest,ElaboratedTypeLocTest_DoesNotBindToNonElaboratedStructDeclaration)2230 TEST_P(ASTMatchersTest,
2231 ElaboratedTypeLocTest_DoesNotBindToNonElaboratedStructDeclaration) {
2232 if (!GetParam().isCXX()) {
2233 return;
2234 }
2235 EXPECT_TRUE(
2236 notMatches("struct s {}; s ss;",
2237 varDecl(hasName("ss"), hasTypeLoc(elaboratedTypeLoc()))));
2238 }
2239
TEST(ASTMatchersTestObjC,ObjCMessageExpr)2240 TEST(ASTMatchersTestObjC, ObjCMessageExpr) {
2241 // Don't find ObjCMessageExpr where none are present.
2242 EXPECT_TRUE(notMatchesObjC("", objcMessageExpr(anything())));
2243
2244 StringRef Objc1String = "@interface Str "
2245 " - (Str *)uppercaseString;"
2246 "@end "
2247 "@interface foo "
2248 "- (void)contents;"
2249 "- (void)meth:(Str *)text;"
2250 "@end "
2251 " "
2252 "@implementation foo "
2253 "- (void) meth:(Str *)text { "
2254 " [self contents];"
2255 " Str *up = [text uppercaseString];"
2256 "} "
2257 "@end ";
2258 EXPECT_TRUE(matchesObjC(Objc1String, objcMessageExpr(anything())));
2259 EXPECT_TRUE(matchesObjC(Objc1String,
2260 objcMessageExpr(hasAnySelector({"contents", "meth:"}))
2261
2262 ));
2263 EXPECT_TRUE(
2264 matchesObjC(Objc1String, objcMessageExpr(hasSelector("contents"))));
2265 EXPECT_TRUE(matchesObjC(
2266 Objc1String, objcMessageExpr(hasAnySelector("contents", "contentsA"))));
2267 EXPECT_FALSE(matchesObjC(
2268 Objc1String, objcMessageExpr(hasAnySelector("contentsB", "contentsC"))));
2269 EXPECT_TRUE(
2270 matchesObjC(Objc1String, objcMessageExpr(matchesSelector("cont*"))));
2271 EXPECT_FALSE(
2272 matchesObjC(Objc1String, objcMessageExpr(matchesSelector("?cont*"))));
2273 EXPECT_TRUE(
2274 notMatchesObjC(Objc1String, objcMessageExpr(hasSelector("contents"),
2275 hasNullSelector())));
2276 EXPECT_TRUE(matchesObjC(Objc1String, objcMessageExpr(hasSelector("contents"),
2277 hasUnarySelector())));
2278 EXPECT_TRUE(matchesObjC(Objc1String, objcMessageExpr(hasSelector("contents"),
2279 numSelectorArgs(0))));
2280 EXPECT_TRUE(
2281 matchesObjC(Objc1String, objcMessageExpr(matchesSelector("uppercase*"),
2282 argumentCountIs(0))));
2283 }
2284
TEST(ASTMatchersTestObjC,ObjCDecls)2285 TEST(ASTMatchersTestObjC, ObjCDecls) {
2286 StringRef ObjCString = "@protocol Proto "
2287 "- (void)protoDidThing; "
2288 "@end "
2289 "@interface Thing "
2290 "@property int enabled; "
2291 "@end "
2292 "@interface Thing (ABC) "
2293 "- (void)abc_doThing; "
2294 "@end "
2295 "@implementation Thing "
2296 "{ id _ivar; } "
2297 "- (void)anything {} "
2298 "@end "
2299 "@implementation Thing (ABC) "
2300 "- (void)abc_doThing {} "
2301 "@end ";
2302
2303 EXPECT_TRUE(matchesObjC(ObjCString, objcProtocolDecl(hasName("Proto"))));
2304 EXPECT_TRUE(
2305 matchesObjC(ObjCString, objcImplementationDecl(hasName("Thing"))));
2306 EXPECT_TRUE(matchesObjC(ObjCString, objcCategoryDecl(hasName("ABC"))));
2307 EXPECT_TRUE(matchesObjC(ObjCString, objcCategoryImplDecl(hasName("ABC"))));
2308 EXPECT_TRUE(
2309 matchesObjC(ObjCString, objcMethodDecl(hasName("protoDidThing"))));
2310 EXPECT_TRUE(matchesObjC(ObjCString, objcMethodDecl(hasName("abc_doThing"))));
2311 EXPECT_TRUE(matchesObjC(ObjCString, objcMethodDecl(hasName("anything"))));
2312 EXPECT_TRUE(matchesObjC(ObjCString, objcIvarDecl(hasName("_ivar"))));
2313 EXPECT_TRUE(matchesObjC(ObjCString, objcPropertyDecl(hasName("enabled"))));
2314 }
2315
TEST(ASTMatchersTestObjC,ObjCExceptionStmts)2316 TEST(ASTMatchersTestObjC, ObjCExceptionStmts) {
2317 StringRef ObjCString = "void f(id obj) {"
2318 " @try {"
2319 " @throw obj;"
2320 " } @catch (...) {"
2321 " } @finally {}"
2322 "}";
2323
2324 EXPECT_TRUE(matchesObjC(ObjCString, objcTryStmt()));
2325 EXPECT_TRUE(matchesObjC(ObjCString, objcThrowStmt()));
2326 EXPECT_TRUE(matchesObjC(ObjCString, objcCatchStmt()));
2327 EXPECT_TRUE(matchesObjC(ObjCString, objcFinallyStmt()));
2328 }
2329
TEST(ASTMatchersTest,DecompositionDecl)2330 TEST(ASTMatchersTest, DecompositionDecl) {
2331 StringRef Code = R"cpp(
2332 void foo()
2333 {
2334 int arr[3];
2335 auto &[f, s, t] = arr;
2336
2337 f = 42;
2338 }
2339 )cpp";
2340 EXPECT_TRUE(matchesConditionally(
2341 Code, decompositionDecl(hasBinding(0, bindingDecl(hasName("f")))), true,
2342 {"-std=c++17"}));
2343 EXPECT_FALSE(matchesConditionally(
2344 Code, decompositionDecl(hasBinding(42, bindingDecl(hasName("f")))), true,
2345 {"-std=c++17"}));
2346 EXPECT_FALSE(matchesConditionally(
2347 Code, decompositionDecl(hasBinding(0, bindingDecl(hasName("s")))), true,
2348 {"-std=c++17"}));
2349 EXPECT_TRUE(matchesConditionally(
2350 Code, decompositionDecl(hasBinding(1, bindingDecl(hasName("s")))), true,
2351 {"-std=c++17"}));
2352
2353 EXPECT_TRUE(matchesConditionally(
2354 Code,
2355 bindingDecl(decl().bind("self"), hasName("f"),
2356 forDecomposition(decompositionDecl(
2357 hasAnyBinding(bindingDecl(equalsBoundNode("self")))))),
2358 true, {"-std=c++17"}));
2359 }
2360
TEST(ASTMatchersTestObjC,ObjCAutoreleasePoolStmt)2361 TEST(ASTMatchersTestObjC, ObjCAutoreleasePoolStmt) {
2362 StringRef ObjCString = "void f() {"
2363 "@autoreleasepool {"
2364 " int x = 1;"
2365 "}"
2366 "}";
2367 EXPECT_TRUE(matchesObjC(ObjCString, autoreleasePoolStmt()));
2368 StringRef ObjCStringNoPool = "void f() { int x = 1; }";
2369 EXPECT_FALSE(matchesObjC(ObjCStringNoPool, autoreleasePoolStmt()));
2370 }
2371
TEST(ASTMatchersTestOpenMP,OMPExecutableDirective)2372 TEST(ASTMatchersTestOpenMP, OMPExecutableDirective) {
2373 auto Matcher = stmt(ompExecutableDirective());
2374
2375 StringRef Source0 = R"(
2376 void x() {
2377 #pragma omp parallel
2378 ;
2379 })";
2380 EXPECT_TRUE(matchesWithOpenMP(Source0, Matcher));
2381
2382 StringRef Source1 = R"(
2383 void x() {
2384 #pragma omp taskyield
2385 ;
2386 })";
2387 EXPECT_TRUE(matchesWithOpenMP(Source1, Matcher));
2388
2389 StringRef Source2 = R"(
2390 void x() {
2391 ;
2392 })";
2393 EXPECT_TRUE(notMatchesWithOpenMP(Source2, Matcher));
2394 }
2395
TEST(ASTMatchersTestOpenMP,OMPDefaultClause)2396 TEST(ASTMatchersTestOpenMP, OMPDefaultClause) {
2397 auto Matcher = ompExecutableDirective(hasAnyClause(ompDefaultClause()));
2398
2399 StringRef Source0 = R"(
2400 void x() {
2401 ;
2402 })";
2403 EXPECT_TRUE(notMatchesWithOpenMP(Source0, Matcher));
2404
2405 StringRef Source1 = R"(
2406 void x() {
2407 #pragma omp parallel
2408 ;
2409 })";
2410 EXPECT_TRUE(notMatchesWithOpenMP(Source1, Matcher));
2411
2412 StringRef Source2 = R"(
2413 void x() {
2414 #pragma omp parallel default(none)
2415 ;
2416 })";
2417 EXPECT_TRUE(matchesWithOpenMP(Source2, Matcher));
2418
2419 StringRef Source3 = R"(
2420 void x() {
2421 #pragma omp parallel default(shared)
2422 ;
2423 })";
2424 EXPECT_TRUE(matchesWithOpenMP(Source3, Matcher));
2425
2426 StringRef Source4 = R"(
2427 void x() {
2428 #pragma omp parallel default(firstprivate)
2429 ;
2430 })";
2431 EXPECT_TRUE(matchesWithOpenMP51(Source4, Matcher));
2432
2433 StringRef Source5 = R"(
2434 void x(int x) {
2435 #pragma omp parallel num_threads(x)
2436 ;
2437 })";
2438 EXPECT_TRUE(notMatchesWithOpenMP(Source5, Matcher));
2439 }
2440
TEST(ASTMatchersTest,Finder_DynamicOnlyAcceptsSomeMatchers)2441 TEST(ASTMatchersTest, Finder_DynamicOnlyAcceptsSomeMatchers) {
2442 MatchFinder Finder;
2443 EXPECT_TRUE(Finder.addDynamicMatcher(decl(), nullptr));
2444 EXPECT_TRUE(Finder.addDynamicMatcher(callExpr(), nullptr));
2445 EXPECT_TRUE(
2446 Finder.addDynamicMatcher(constantArrayType(hasSize(42)), nullptr));
2447
2448 // Do not accept non-toplevel matchers.
2449 EXPECT_FALSE(Finder.addDynamicMatcher(isMain(), nullptr));
2450 EXPECT_FALSE(Finder.addDynamicMatcher(hasName("x"), nullptr));
2451 }
2452
TEST(MatchFinderAPI,MatchesDynamic)2453 TEST(MatchFinderAPI, MatchesDynamic) {
2454 StringRef SourceCode = "struct A { void f() {} };";
2455 auto Matcher = functionDecl(isDefinition()).bind("method");
2456
2457 auto astUnit = tooling::buildASTFromCode(SourceCode);
2458
2459 auto GlobalBoundNodes = matchDynamic(Matcher, astUnit->getASTContext());
2460
2461 EXPECT_EQ(GlobalBoundNodes.size(), 1u);
2462 EXPECT_EQ(GlobalBoundNodes[0].getMap().size(), 1u);
2463
2464 auto GlobalMethodNode = GlobalBoundNodes[0].getNodeAs<FunctionDecl>("method");
2465 EXPECT_TRUE(GlobalMethodNode != nullptr);
2466
2467 auto MethodBoundNodes =
2468 matchDynamic(Matcher, *GlobalMethodNode, astUnit->getASTContext());
2469 EXPECT_EQ(MethodBoundNodes.size(), 1u);
2470 EXPECT_EQ(MethodBoundNodes[0].getMap().size(), 1u);
2471
2472 auto MethodNode = MethodBoundNodes[0].getNodeAs<FunctionDecl>("method");
2473 EXPECT_EQ(MethodNode, GlobalMethodNode);
2474 }
2475
allTestClangConfigs()2476 static std::vector<TestClangConfig> allTestClangConfigs() {
2477 std::vector<TestClangConfig> all_configs;
2478 for (TestLanguage lang : {Lang_C89, Lang_C99, Lang_CXX03, Lang_CXX11,
2479 Lang_CXX14, Lang_CXX17, Lang_CXX20}) {
2480 TestClangConfig config;
2481 config.Language = lang;
2482
2483 // Use an unknown-unknown triple so we don't instantiate the full system
2484 // toolchain. On Linux, instantiating the toolchain involves stat'ing
2485 // large portions of /usr/lib, and this slows down not only this test, but
2486 // all other tests, via contention in the kernel.
2487 //
2488 // FIXME: This is a hack to work around the fact that there's no way to do
2489 // the equivalent of runToolOnCodeWithArgs without instantiating a full
2490 // Driver. We should consider having a function, at least for tests, that
2491 // invokes cc1.
2492 config.Target = "i386-unknown-unknown";
2493 all_configs.push_back(config);
2494
2495 // Windows target is interesting to test because it enables
2496 // `-fdelayed-template-parsing`.
2497 config.Target = "x86_64-pc-win32-msvc";
2498 all_configs.push_back(config);
2499 }
2500 return all_configs;
2501 }
2502
2503 INSTANTIATE_TEST_SUITE_P(ASTMatchersTests, ASTMatchersTest,
2504 testing::ValuesIn(allTestClangConfigs()));
2505
2506 } // namespace ast_matchers
2507 } // namespace clang
2508