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| 8 | |
| 9 | #include "clang/Frontend/CompilerInstance.h" |
| 10 | #include "clang/Frontend/FrontendActions.h" |
| 11 | #include "clang/Lex/Preprocessor.h" |
| 12 | #include "clang/Parse/ParseAST.h" |
| 13 | #include "clang/Sema/Sema.h" |
| 14 | #include "clang/Sema/SemaDiagnostic.h" |
| 15 | #include "clang/Tooling/Tooling.h" |
| 16 | #include "gmock/gmock.h" |
| 17 | #include "gtest/gtest.h" |
| 18 | #include <cstddef> |
| 19 | #include <string> |
| 20 | |
| 21 | namespace { |
| 22 | |
| 23 | using namespace clang; |
| 24 | using namespace clang::tooling; |
| 25 | using ::testing::Each; |
| 26 | using ::testing::UnorderedElementsAre; |
| 27 | |
| 28 | const char TestCCName[] = "test.cc"; |
| 29 | |
| 30 | struct CompletionContext { |
| 31 | std::vector<std::string> VisitedNamespaces; |
| 32 | std::string PreferredType; |
| 33 | |
| 34 | |
| 35 | std::string PtrDiffType; |
| 36 | }; |
| 37 | |
| 38 | class VisitedContextFinder : public CodeCompleteConsumer { |
| 39 | public: |
| 40 | VisitedContextFinder(CompletionContext &ResultCtx) |
| 41 | : CodeCompleteConsumer({}, |
| 42 | false), |
| 43 | ResultCtx(ResultCtx), |
| 44 | CCTUInfo(std::make_shared<GlobalCodeCompletionAllocator>()) {} |
| 45 | |
| 46 | void ProcessCodeCompleteResults(Sema &S, CodeCompletionContext Context, |
| 47 | CodeCompletionResult *Results, |
| 48 | unsigned NumResults) override { |
| 49 | ResultCtx.VisitedNamespaces = |
| 50 | getVisitedNamespace(Context.getVisitedContexts()); |
| 51 | ResultCtx.PreferredType = Context.getPreferredType().getAsString(); |
| 52 | ResultCtx.PtrDiffType = |
| 53 | S.getASTContext().getPointerDiffType().getAsString(); |
| 54 | } |
| 55 | |
| 56 | CodeCompletionAllocator &getAllocator() override { |
| 57 | return CCTUInfo.getAllocator(); |
| 58 | } |
| 59 | |
| 60 | CodeCompletionTUInfo &getCodeCompletionTUInfo() override { return CCTUInfo; } |
| 61 | |
| 62 | private: |
| 63 | std::vector<std::string> getVisitedNamespace( |
| 64 | CodeCompletionContext::VisitedContextSet VisitedContexts) const { |
| 65 | std::vector<std::string> NSNames; |
| 66 | for (const auto *Context : VisitedContexts) |
| 67 | if (const auto *NS = llvm::dyn_cast<NamespaceDecl>(Context)) |
| 68 | NSNames.push_back(NS->getQualifiedNameAsString()); |
| 69 | return NSNames; |
| 70 | } |
| 71 | |
| 72 | CompletionContext &ResultCtx; |
| 73 | CodeCompletionTUInfo CCTUInfo; |
| 74 | }; |
| 75 | |
| 76 | class CodeCompleteAction : public SyntaxOnlyAction { |
| 77 | public: |
| 78 | CodeCompleteAction(ParsedSourceLocation P, CompletionContext &ResultCtx) |
| 79 | : CompletePosition(std::move(P)), ResultCtx(ResultCtx) {} |
| 80 | |
| 81 | bool BeginInvocation(CompilerInstance &CI) override { |
| 82 | CI.getFrontendOpts().CodeCompletionAt = CompletePosition; |
| 83 | CI.setCodeCompletionConsumer(new VisitedContextFinder(ResultCtx)); |
| 84 | return true; |
| 85 | } |
| 86 | |
| 87 | private: |
| 88 | |
| 89 | ParsedSourceLocation CompletePosition; |
| 90 | CompletionContext &ResultCtx; |
| 91 | }; |
| 92 | |
| 93 | ParsedSourceLocation offsetToPosition(llvm::StringRef Code, size_t Offset) { |
| 94 | Offset = std::min(Code.size(), Offset); |
| 95 | StringRef Before = Code.substr(0, Offset); |
| 96 | int Lines = Before.count('\n'); |
| 97 | size_t PrevNL = Before.rfind('\n'); |
| 98 | size_t StartOfLine = (PrevNL == StringRef::npos) ? 0 : (PrevNL + 1); |
| 99 | return {TestCCName, static_cast<unsigned>(Lines + 1), |
| 100 | static_cast<unsigned>(Offset - StartOfLine + 1)}; |
| 101 | } |
| 102 | |
| 103 | CompletionContext runCompletion(StringRef Code, size_t Offset) { |
| 104 | CompletionContext ResultCtx; |
| 105 | auto Action = llvm::make_unique<CodeCompleteAction>( |
| 106 | offsetToPosition(Code, Offset), ResultCtx); |
| 107 | clang::tooling::runToolOnCodeWithArgs(Action.release(), Code, {"-std=c++11"}, |
| 108 | TestCCName); |
| 109 | return ResultCtx; |
| 110 | } |
| 111 | |
| 112 | struct ParsedAnnotations { |
| 113 | std::vector<size_t> Points; |
| 114 | std::string Code; |
| 115 | }; |
| 116 | |
| 117 | ParsedAnnotations parseAnnotations(StringRef AnnotatedCode) { |
| 118 | ParsedAnnotations R; |
| 119 | while (!AnnotatedCode.empty()) { |
| 120 | size_t NextPoint = AnnotatedCode.find('^'); |
| 121 | if (NextPoint == StringRef::npos) { |
| 122 | R.Code += AnnotatedCode; |
| 123 | AnnotatedCode = ""; |
| 124 | break; |
| 125 | } |
| 126 | R.Code += AnnotatedCode.substr(0, NextPoint); |
| 127 | R.Points.push_back(R.Code.size()); |
| 128 | |
| 129 | AnnotatedCode = AnnotatedCode.substr(NextPoint + 1); |
| 130 | } |
| 131 | return R; |
| 132 | } |
| 133 | |
| 134 | CompletionContext runCodeCompleteOnCode(StringRef AnnotatedCode) { |
| 135 | ParsedAnnotations P = parseAnnotations(AnnotatedCode); |
| 136 | (0) . __assert_fail ("P.Points.size() == 1 && \"expected exactly one annotation point\"", "/home/seafit/code_projects/clang_source/clang/unittests/Sema/CodeCompleteTest.cpp", 136, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(P.Points.size() == 1 && "expected exactly one annotation point"); |
| 137 | return runCompletion(P.Code, P.Points.front()); |
| 138 | } |
| 139 | |
| 140 | std::vector<std::string> |
| 141 | collectPreferredTypes(StringRef AnnotatedCode, |
| 142 | std::string *PtrDiffType = nullptr) { |
| 143 | ParsedAnnotations P = parseAnnotations(AnnotatedCode); |
| 144 | std::vector<std::string> Types; |
| 145 | for (size_t Point : P.Points) { |
| 146 | auto Results = runCompletion(P.Code, Point); |
| 147 | if (PtrDiffType) { |
| 148 | empty() || *PtrDiffType == Results.PtrDiffType", "/home/seafit/code_projects/clang_source/clang/unittests/Sema/CodeCompleteTest.cpp", 148, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(PtrDiffType->empty() || *PtrDiffType == Results.PtrDiffType); |
| 149 | *PtrDiffType = Results.PtrDiffType; |
| 150 | } |
| 151 | Types.push_back(Results.PreferredType); |
| 152 | } |
| 153 | return Types; |
| 154 | } |
| 155 | |
| 156 | TEST(SemaCodeCompleteTest, VisitedNSForValidQualifiedId) { |
| 157 | auto VisitedNS = runCodeCompleteOnCode(R"cpp( |
| 158 | namespace ns1 {} |
| 159 | namespace ns2 {} |
| 160 | namespace ns3 {} |
| 161 | namespace ns3 { namespace nns3 {} } |
| 162 | |
| 163 | namespace foo { |
| 164 | using namespace ns1; |
| 165 | namespace ns4 {} // not visited |
| 166 | namespace { using namespace ns2; } |
| 167 | inline namespace bar { using namespace ns3::nns3; } |
| 168 | } // foo |
| 169 | namespace ns { foo::^ } |
| 170 | )cpp") |
| 171 | .VisitedNamespaces; |
| 172 | EXPECT_THAT(VisitedNS, UnorderedElementsAre("foo", "ns1", "ns2", "ns3::nns3", |
| 173 | "foo::(anonymous)")); |
| 174 | } |
| 175 | |
| 176 | TEST(SemaCodeCompleteTest, VisitedNSForInvalidQualifiedId) { |
| 177 | auto VisitedNS = runCodeCompleteOnCode(R"cpp( |
| 178 | namespace na {} |
| 179 | namespace ns1 { |
| 180 | using namespace na; |
| 181 | foo::^ |
| 182 | } |
| 183 | )cpp") |
| 184 | .VisitedNamespaces; |
| 185 | EXPECT_THAT(VisitedNS, UnorderedElementsAre("ns1", "na")); |
| 186 | } |
| 187 | |
| 188 | TEST(SemaCodeCompleteTest, VisitedNSWithoutQualifier) { |
| 189 | auto VisitedNS = runCodeCompleteOnCode(R"cpp( |
| 190 | namespace n1 { |
| 191 | namespace n2 { |
| 192 | void f(^) {} |
| 193 | } |
| 194 | } |
| 195 | )cpp") |
| 196 | .VisitedNamespaces; |
| 197 | EXPECT_THAT(VisitedNS, UnorderedElementsAre("n1", "n1::n2")); |
| 198 | } |
| 199 | |
| 200 | TEST(PreferredTypeTest, BinaryExpr) { |
| 201 | |
| 202 | StringRef Code = R"cpp( |
| 203 | void test(int x) { |
| 204 | x = ^10; |
| 205 | x += ^10; x -= ^10; x *= ^10; x /= ^10; x %= ^10; |
| 206 | x + ^10; x - ^10; x * ^10; x / ^10; x % ^10; |
| 207 | })cpp"; |
| 208 | EXPECT_THAT(collectPreferredTypes(Code), Each("int")); |
| 209 | |
| 210 | Code = R"cpp( |
| 211 | void test(float x) { |
| 212 | x = ^10; |
| 213 | x += ^10; x -= ^10; x *= ^10; x /= ^10; x %= ^10; |
| 214 | x + ^10; x - ^10; x * ^10; x / ^10; x % ^10; |
| 215 | })cpp"; |
| 216 | EXPECT_THAT(collectPreferredTypes(Code), Each("float")); |
| 217 | |
| 218 | |
| 219 | Code = R"cpp( |
| 220 | void test(int *ptr) { |
| 221 | ptr - ^ptr; |
| 222 | ptr = ^ptr; |
| 223 | })cpp"; |
| 224 | EXPECT_THAT(collectPreferredTypes(Code), Each("int *")); |
| 225 | |
| 226 | Code = R"cpp( |
| 227 | void test(int *ptr) { |
| 228 | ptr + ^10; |
| 229 | ptr += ^10; |
| 230 | ptr -= ^10; |
| 231 | })cpp"; |
| 232 | { |
| 233 | std::string PtrDiff; |
| 234 | auto Types = collectPreferredTypes(Code, &PtrDiff); |
| 235 | EXPECT_THAT(Types, Each(PtrDiff)); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | Code = R"cpp( |
| 240 | void test(int i) { |
| 241 | i <= ^1; i < ^1; i >= ^1; i > ^1; i == ^1; i != ^1; |
| 242 | } |
| 243 | )cpp"; |
| 244 | EXPECT_THAT(collectPreferredTypes(Code), Each("int")); |
| 245 | |
| 246 | Code = R"cpp( |
| 247 | void test(int *ptr) { |
| 248 | ptr <= ^ptr; ptr < ^ptr; ptr >= ^ptr; ptr > ^ptr; |
| 249 | ptr == ^ptr; ptr != ^ptr; |
| 250 | } |
| 251 | )cpp"; |
| 252 | EXPECT_THAT(collectPreferredTypes(Code), Each("int *")); |
| 253 | |
| 254 | |
| 255 | Code = R"cpp( |
| 256 | void test(int i, int *ptr) { |
| 257 | i && ^1; i || ^1; |
| 258 | ptr && ^1; ptr || ^1; |
| 259 | } |
| 260 | )cpp"; |
| 261 | EXPECT_THAT(collectPreferredTypes(Code), Each("_Bool")); |
| 262 | |
| 263 | |
| 264 | Code = R"cpp( |
| 265 | void test(long long ll) { |
| 266 | ll | ^1; ll & ^1; |
| 267 | } |
| 268 | )cpp"; |
| 269 | EXPECT_THAT(collectPreferredTypes(Code), Each("long long")); |
| 270 | |
| 271 | Code = R"cpp( |
| 272 | enum A {}; |
| 273 | void test(A a) { |
| 274 | a | ^1; a & ^1; |
| 275 | } |
| 276 | )cpp"; |
| 277 | EXPECT_THAT(collectPreferredTypes(Code), Each("enum A")); |
| 278 | |
| 279 | Code = R"cpp( |
| 280 | enum class A {}; |
| 281 | void test(A a) { |
| 282 | // This is technically illegal with the 'enum class' without overloaded |
| 283 | // operators, but we pretend it's fine. |
| 284 | a | ^a; a & ^a; |
| 285 | } |
| 286 | )cpp"; |
| 287 | EXPECT_THAT(collectPreferredTypes(Code), Each("enum A")); |
| 288 | |
| 289 | |
| 290 | Code = R"cpp( |
| 291 | void test(int i, long long ll) { |
| 292 | i << ^1; ll << ^1; |
| 293 | i <<= ^1; i <<= ^1; |
| 294 | i >> ^1; ll >> ^1; |
| 295 | i >>= ^1; i >>= ^1; |
| 296 | } |
| 297 | )cpp"; |
| 298 | EXPECT_THAT(collectPreferredTypes(Code), Each("int")); |
| 299 | |
| 300 | |
| 301 | Code = R"cpp( |
| 302 | class Cls {}; |
| 303 | void test(int i, int* ptr, Cls x) { |
| 304 | (i, ^i); |
| 305 | (ptr, ^ptr); |
| 306 | (x, ^x); |
| 307 | } |
| 308 | )cpp"; |
| 309 | EXPECT_THAT(collectPreferredTypes(Code), Each("NULL TYPE")); |
| 310 | |
| 311 | |
| 312 | |
| 313 | Code = R"cpp( |
| 314 | class Cls {}; |
| 315 | void test(Cls c) { |
| 316 | // we assume arithmetic and comparions ops take the same type. |
| 317 | c + ^c; c - ^c; c * ^c; c / ^c; c % ^c; |
| 318 | c == ^c; c != ^c; c < ^c; c <= ^c; c > ^c; c >= ^c; |
| 319 | // same for the assignments. |
| 320 | c = ^c; c += ^c; c -= ^c; c *= ^c; c /= ^c; c %= ^c; |
| 321 | } |
| 322 | )cpp"; |
| 323 | EXPECT_THAT(collectPreferredTypes(Code), Each("class Cls")); |
| 324 | |
| 325 | Code = R"cpp( |
| 326 | class Cls {}; |
| 327 | void test(Cls c) { |
| 328 | // we assume relational ops operate on bools. |
| 329 | c && ^c; c || ^c; |
| 330 | } |
| 331 | )cpp"; |
| 332 | EXPECT_THAT(collectPreferredTypes(Code), Each("_Bool")); |
| 333 | |
| 334 | Code = R"cpp( |
| 335 | class Cls {}; |
| 336 | void test(Cls c) { |
| 337 | // we make no assumptions about the following operators, since they are |
| 338 | // often overloaded with a non-standard meaning. |
| 339 | c << ^c; c >> ^c; c | ^c; c & ^c; |
| 340 | c <<= ^c; c >>= ^c; c |= ^c; c &= ^c; |
| 341 | } |
| 342 | )cpp"; |
| 343 | EXPECT_THAT(collectPreferredTypes(Code), Each("NULL TYPE")); |
| 344 | } |
| 345 | |
| 346 | TEST(PreferredTypeTest, Members) { |
| 347 | StringRef Code = R"cpp( |
| 348 | struct vector { |
| 349 | int *begin(); |
| 350 | vector clone(); |
| 351 | }; |
| 352 | |
| 353 | void test(int *a) { |
| 354 | a = ^vector().^clone().^begin(); |
| 355 | } |
| 356 | )cpp"; |
| 357 | EXPECT_THAT(collectPreferredTypes(Code), Each("int *")); |
| 358 | } |
| 359 | |
| 360 | TEST(PreferredTypeTest, Conditions) { |
| 361 | StringRef Code = R"cpp( |
| 362 | struct vector { |
| 363 | bool empty(); |
| 364 | }; |
| 365 | |
| 366 | void test() { |
| 367 | if (^vector().^empty()) {} |
| 368 | while (^vector().^empty()) {} |
| 369 | for (; ^vector().^empty();) {} |
| 370 | } |
| 371 | )cpp"; |
| 372 | EXPECT_THAT(collectPreferredTypes(Code), Each("_Bool")); |
| 373 | } |
| 374 | |
| 375 | TEST(PreferredTypeTest, InitAndAssignment) { |
| 376 | StringRef Code = R"cpp( |
| 377 | struct vector { |
| 378 | int* begin(); |
| 379 | }; |
| 380 | |
| 381 | void test() { |
| 382 | const int* x = ^vector().^begin(); |
| 383 | x = ^vector().^begin(); |
| 384 | |
| 385 | if (const int* y = ^vector().^begin()) {} |
| 386 | } |
| 387 | )cpp"; |
| 388 | EXPECT_THAT(collectPreferredTypes(Code), Each("const int *")); |
| 389 | } |
| 390 | |
| 391 | TEST(PreferredTypeTest, UnaryExprs) { |
| 392 | StringRef Code = R"cpp( |
| 393 | void test(long long a) { |
| 394 | a = +^a; |
| 395 | a = -^a |
| 396 | a = ++^a; |
| 397 | a = --^a; |
| 398 | } |
| 399 | )cpp"; |
| 400 | EXPECT_THAT(collectPreferredTypes(Code), Each("long long")); |
| 401 | |
| 402 | Code = R"cpp( |
| 403 | void test(int a, int *ptr) { |
| 404 | !^a; |
| 405 | !^ptr; |
| 406 | !!!^a; |
| 407 | |
| 408 | a = !^a; |
| 409 | a = !^ptr; |
| 410 | a = !!!^a; |
| 411 | } |
| 412 | )cpp"; |
| 413 | EXPECT_THAT(collectPreferredTypes(Code), Each("_Bool")); |
| 414 | |
| 415 | Code = R"cpp( |
| 416 | void test(int a) { |
| 417 | const int* x = &^a; |
| 418 | } |
| 419 | )cpp"; |
| 420 | EXPECT_THAT(collectPreferredTypes(Code), Each("const int")); |
| 421 | |
| 422 | Code = R"cpp( |
| 423 | void test(int *a) { |
| 424 | int x = *^a; |
| 425 | int &r = *^a; |
| 426 | } |
| 427 | )cpp"; |
| 428 | EXPECT_THAT(collectPreferredTypes(Code), Each("int *")); |
| 429 | |
| 430 | Code = R"cpp( |
| 431 | void test(int a) { |
| 432 | *^a; |
| 433 | &^a; |
| 434 | } |
| 435 | |
| 436 | )cpp"; |
| 437 | } |
| 438 | |
| 439 | TEST(PreferredTypeTest, ParenExpr) { |
| 440 | StringRef Code = R"cpp( |
| 441 | const int *i = ^(^(^(^10))); |
| 442 | )cpp"; |
| 443 | EXPECT_THAT(collectPreferredTypes(Code), Each("const int *")); |
| 444 | } |
| 445 | |
| 446 | TEST(PreferredTypeTest, FunctionArguments) { |
| 447 | StringRef Code = R"cpp( |
| 448 | void foo(const int*); |
| 449 | |
| 450 | void bar(const int*); |
| 451 | void bar(const int*, int b); |
| 452 | |
| 453 | struct vector { |
| 454 | const int *data(); |
| 455 | }; |
| 456 | void test() { |
| 457 | foo(^(^(^(^vec^tor^().^da^ta^())))); |
| 458 | bar(^(^(^(^vec^tor^().^da^ta^())))); |
| 459 | } |
| 460 | )cpp"; |
| 461 | EXPECT_THAT(collectPreferredTypes(Code), Each("const int *")); |
| 462 | |
| 463 | Code = R"cpp( |
| 464 | void bar(int, volatile double *); |
| 465 | void bar(int, volatile double *, int, int); |
| 466 | |
| 467 | struct vector { |
| 468 | double *data(); |
| 469 | }; |
| 470 | |
| 471 | struct class_members { |
| 472 | void bar(int, volatile double *); |
| 473 | void bar(int, volatile double *, int, int); |
| 474 | }; |
| 475 | void test() { |
| 476 | bar(10, ^(^(^(^vec^tor^().^da^ta^())))); |
| 477 | class_members().bar(10, ^(^(^(^vec^tor^().^da^ta^())))); |
| 478 | } |
| 479 | )cpp"; |
| 480 | EXPECT_THAT(collectPreferredTypes(Code), Each("volatile double *")); |
| 481 | } |
| 482 | } |
| 483 | |