1 //===- unittest/Format/TokenAnnotatorTest.cpp - Formatting 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 "clang/Format/Format.h" 10 11 #include "FormatTestUtils.h" 12 #include "TestLexer.h" 13 #include "gtest/gtest.h" 14 15 namespace clang { 16 namespace format { 17 18 // Not really the equality, but everything we need. 19 static bool operator==(const FormatToken &LHS, 20 const FormatToken &RHS) noexcept { 21 return LHS.Tok.getKind() == RHS.Tok.getKind() && 22 LHS.getType() == RHS.getType(); 23 } 24 25 namespace { 26 27 class TokenAnnotatorTest : public ::testing::Test { 28 protected: 29 TokenList annotate(llvm::StringRef Code, 30 const FormatStyle &Style = getLLVMStyle()) { 31 return TestLexer(Allocator, Buffers, Style).annotate(Code); 32 } 33 llvm::SpecificBumpPtrAllocator<FormatToken> Allocator; 34 std::vector<std::unique_ptr<llvm::MemoryBuffer>> Buffers; 35 }; 36 37 #define EXPECT_TOKEN_KIND(FormatTok, Kind) \ 38 EXPECT_EQ((FormatTok)->Tok.getKind(), Kind) << *(FormatTok) 39 #define EXPECT_TOKEN_TYPE(FormatTok, Type) \ 40 EXPECT_EQ((FormatTok)->getType(), Type) << *(FormatTok) 41 #define EXPECT_TOKEN(FormatTok, Kind, Type) \ 42 do { \ 43 EXPECT_TOKEN_KIND(FormatTok, Kind); \ 44 EXPECT_TOKEN_TYPE(FormatTok, Type); \ 45 } while (false) 46 47 TEST_F(TokenAnnotatorTest, UnderstandsUsesOfStarAndAmp) { 48 auto Tokens = annotate("auto x = [](const decltype(x) &ptr) {};"); 49 EXPECT_EQ(Tokens.size(), 18u) << Tokens; 50 EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown); 51 EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen); 52 EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown); 53 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 54 EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference); 55 56 Tokens = annotate("auto x = [](const decltype(x) *ptr) {};"); 57 EXPECT_EQ(Tokens.size(), 18u) << Tokens; 58 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 59 EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference); 60 61 Tokens = annotate("#define lambda [](const decltype(x) &ptr) {}"); 62 EXPECT_EQ(Tokens.size(), 17u) << Tokens; 63 EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown); 64 EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen); 65 EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown); 66 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 67 EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference); 68 69 Tokens = annotate("#define lambda [](const decltype(x) *ptr) {}"); 70 EXPECT_EQ(Tokens.size(), 17u) << Tokens; 71 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 72 EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference); 73 74 Tokens = annotate("void f() {\n" 75 " while (p < a && *p == 'a')\n" 76 " p++;\n" 77 "}"); 78 EXPECT_EQ(Tokens.size(), 21u) << Tokens; 79 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 80 EXPECT_TOKEN(Tokens[11], tok::star, TT_UnaryOperator); 81 } 82 83 TEST_F(TokenAnnotatorTest, UnderstandsClasses) { 84 auto Tokens = annotate("class C {};"); 85 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 86 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_ClassLBrace); 87 88 Tokens = annotate("const class C {} c;"); 89 EXPECT_EQ(Tokens.size(), 8u) << Tokens; 90 EXPECT_TOKEN(Tokens[3], tok::l_brace, TT_ClassLBrace); 91 92 Tokens = annotate("const class {} c;"); 93 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 94 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_ClassLBrace); 95 } 96 97 TEST_F(TokenAnnotatorTest, UnderstandsStructs) { 98 auto Tokens = annotate("struct S {};"); 99 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 100 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_StructLBrace); 101 } 102 103 TEST_F(TokenAnnotatorTest, UnderstandsUnions) { 104 auto Tokens = annotate("union U {};"); 105 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 106 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_UnionLBrace); 107 108 Tokens = annotate("union U { void f() { return; } };"); 109 EXPECT_EQ(Tokens.size(), 14u) << Tokens; 110 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_UnionLBrace); 111 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_FunctionLBrace); 112 } 113 114 TEST_F(TokenAnnotatorTest, UnderstandsEnums) { 115 auto Tokens = annotate("enum E {};"); 116 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 117 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_EnumLBrace); 118 } 119 120 TEST_F(TokenAnnotatorTest, UnderstandsDefaultedAndDeletedFunctions) { 121 auto Tokens = annotate("auto operator<=>(const T &) const & = default;"); 122 EXPECT_EQ(Tokens.size(), 14u) << Tokens; 123 EXPECT_TOKEN(Tokens[9], tok::amp, TT_PointerOrReference); 124 125 Tokens = annotate("template <typename T> void F(T) && = delete;"); 126 EXPECT_EQ(Tokens.size(), 15u) << Tokens; 127 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_PointerOrReference); 128 } 129 130 TEST_F(TokenAnnotatorTest, UnderstandsVariables) { 131 auto Tokens = 132 annotate("inline bool var = is_integral_v<int> && is_signed_v<int>;"); 133 EXPECT_EQ(Tokens.size(), 15u) << Tokens; 134 EXPECT_TOKEN(Tokens[8], tok::ampamp, TT_BinaryOperator); 135 } 136 137 TEST_F(TokenAnnotatorTest, UnderstandsVariableTemplates) { 138 auto Tokens = 139 annotate("template <typename T> " 140 "inline bool var = is_integral_v<int> && is_signed_v<int>;"); 141 EXPECT_EQ(Tokens.size(), 20u) << Tokens; 142 EXPECT_TOKEN(Tokens[13], tok::ampamp, TT_BinaryOperator); 143 } 144 145 TEST_F(TokenAnnotatorTest, UnderstandsLBracesInMacroDefinition) { 146 auto Tokens = annotate("#define BEGIN NS {"); 147 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 148 EXPECT_TOKEN(Tokens[4], tok::l_brace, TT_Unknown); 149 } 150 151 TEST_F(TokenAnnotatorTest, UnderstandsDelete) { 152 auto Tokens = annotate("delete (void *)p;"); 153 EXPECT_EQ(Tokens.size(), 8u) << Tokens; 154 EXPECT_TOKEN(Tokens[4], tok::r_paren, TT_CastRParen); 155 156 Tokens = annotate("delete[] (void *)p;"); 157 EXPECT_EQ(Tokens.size(), 10u) << Tokens; 158 EXPECT_TOKEN(Tokens[6], tok::r_paren, TT_CastRParen); 159 160 Tokens = annotate("delete[] /*comment*/ (void *)p;"); 161 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 162 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 163 164 Tokens = annotate("delete[/*comment*/] (void *)p;"); 165 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 166 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 167 168 Tokens = annotate("delete/*comment*/[] (void *)p;"); 169 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 170 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 171 } 172 173 TEST_F(TokenAnnotatorTest, UnderstandsFunctionRefQualifiers) { 174 auto Tokens = annotate("void f() &;"); 175 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 176 EXPECT_TOKEN(Tokens[4], tok::amp, TT_PointerOrReference); 177 178 Tokens = annotate("void operator=(T) &&;"); 179 EXPECT_EQ(Tokens.size(), 9u) << Tokens; 180 EXPECT_TOKEN(Tokens[6], tok::ampamp, TT_PointerOrReference); 181 182 Tokens = annotate("template <typename T> void f() &;"); 183 EXPECT_EQ(Tokens.size(), 12u) << Tokens; 184 EXPECT_TOKEN(Tokens[9], tok::amp, TT_PointerOrReference); 185 186 Tokens = annotate("template <typename T> void operator=(T) &;"); 187 EXPECT_EQ(Tokens.size(), 14u) << Tokens; 188 EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference); 189 } 190 191 TEST_F(TokenAnnotatorTest, UnderstandsRequiresClausesAndConcepts) { 192 auto Tokens = annotate("template <typename T>\n" 193 "concept C = (Foo && Bar) && (Bar && Baz);"); 194 195 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 196 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 197 EXPECT_TOKEN(Tokens[13], tok::ampamp, TT_BinaryOperator); 198 EXPECT_TOKEN(Tokens[16], tok::ampamp, TT_BinaryOperator); 199 200 Tokens = annotate("template <typename T>\n" 201 "concept C = requires(T t) {\n" 202 " { t.foo() };\n" 203 "} && Bar<T> && Baz<T>;"); 204 ASSERT_EQ(Tokens.size(), 35u) << Tokens; 205 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 206 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 207 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 208 EXPECT_TOKEN(Tokens[23], tok::ampamp, TT_BinaryOperator); 209 EXPECT_TOKEN(Tokens[28], tok::ampamp, TT_BinaryOperator); 210 211 Tokens = annotate("template<typename T>\n" 212 "requires C1<T> && (C21<T> || C22<T> && C2e<T>) && C3<T>\n" 213 "struct Foo;"); 214 ASSERT_EQ(Tokens.size(), 36u) << Tokens; 215 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 216 EXPECT_TOKEN(Tokens[6], tok::identifier, TT_Unknown); 217 EXPECT_EQ(Tokens[6]->FakeLParens.size(), 1u); 218 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 219 EXPECT_TOKEN(Tokens[16], tok::pipepipe, TT_BinaryOperator); 220 EXPECT_TOKEN(Tokens[21], tok::ampamp, TT_BinaryOperator); 221 EXPECT_TOKEN(Tokens[27], tok::ampamp, TT_BinaryOperator); 222 EXPECT_TOKEN(Tokens[31], tok::greater, TT_TemplateCloser); 223 EXPECT_EQ(Tokens[31]->FakeRParens, 1u); 224 EXPECT_TRUE(Tokens[31]->ClosesRequiresClause); 225 226 Tokens = 227 annotate("template<typename T>\n" 228 "requires (C1<T> && (C21<T> || C22<T> && C2e<T>) && C3<T>)\n" 229 "struct Foo;"); 230 ASSERT_EQ(Tokens.size(), 38u) << Tokens; 231 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 232 EXPECT_TOKEN(Tokens[7], tok::identifier, TT_Unknown); 233 EXPECT_EQ(Tokens[7]->FakeLParens.size(), 1u); 234 EXPECT_TOKEN(Tokens[11], tok::ampamp, TT_BinaryOperator); 235 EXPECT_TOKEN(Tokens[17], tok::pipepipe, TT_BinaryOperator); 236 EXPECT_TOKEN(Tokens[22], tok::ampamp, TT_BinaryOperator); 237 EXPECT_TOKEN(Tokens[28], tok::ampamp, TT_BinaryOperator); 238 EXPECT_TOKEN(Tokens[32], tok::greater, TT_TemplateCloser); 239 EXPECT_EQ(Tokens[32]->FakeRParens, 1u); 240 EXPECT_TOKEN(Tokens[33], tok::r_paren, TT_Unknown); 241 EXPECT_TRUE(Tokens[33]->ClosesRequiresClause); 242 243 Tokens = annotate("template <typename T>\n" 244 "void foo(T) noexcept requires Bar<T>;"); 245 ASSERT_EQ(Tokens.size(), 18u) << Tokens; 246 EXPECT_TOKEN(Tokens[11], tok::kw_requires, TT_RequiresClause); 247 248 Tokens = annotate("template <typename T>\n" 249 "struct S {\n" 250 " void foo() const requires Bar<T>;\n" 251 " void bar() const & requires Baz<T>;\n" 252 " void bar() && requires Baz2<T>;\n" 253 " void baz() const & noexcept requires Baz<T>;\n" 254 " void baz() && noexcept requires Baz2<T>;\n" 255 "};\n" 256 "\n" 257 "void S::bar() const & requires Baz<T> { }"); 258 ASSERT_EQ(Tokens.size(), 85u) << Tokens; 259 EXPECT_TOKEN(Tokens[13], tok::kw_requires, TT_RequiresClause); 260 EXPECT_TOKEN(Tokens[25], tok::kw_requires, TT_RequiresClause); 261 EXPECT_TOKEN(Tokens[36], tok::kw_requires, TT_RequiresClause); 262 EXPECT_TOKEN(Tokens[49], tok::kw_requires, TT_RequiresClause); 263 EXPECT_TOKEN(Tokens[61], tok::kw_requires, TT_RequiresClause); 264 EXPECT_TOKEN(Tokens[77], tok::kw_requires, TT_RequiresClause); 265 266 Tokens = annotate("void Class::member() && requires(Constant) {}"); 267 ASSERT_EQ(Tokens.size(), 14u) << Tokens; 268 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 269 270 Tokens = annotate("void Class::member() && requires(Constant<T>) {}"); 271 ASSERT_EQ(Tokens.size(), 17u) << Tokens; 272 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 273 274 Tokens = 275 annotate("void Class::member() && requires(Namespace::Constant<T>) {}"); 276 ASSERT_EQ(Tokens.size(), 19u) << Tokens; 277 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 278 279 Tokens = annotate("void Class::member() && requires(typename " 280 "Namespace::Outer<T>::Inner::Constant) {}"); 281 ASSERT_EQ(Tokens.size(), 24u) << Tokens; 282 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 283 284 Tokens = annotate("struct [[nodiscard]] zero_t {\n" 285 " template<class T>\n" 286 " requires requires { number_zero_v<T>; }\n" 287 " [[nodiscard]] constexpr operator T() const { " 288 "return number_zero_v<T>; }\n" 289 "};"); 290 ASSERT_EQ(Tokens.size(), 44u); 291 EXPECT_TOKEN(Tokens[13], tok::kw_requires, TT_RequiresClause); 292 EXPECT_TOKEN(Tokens[14], tok::kw_requires, TT_RequiresExpression); 293 EXPECT_TOKEN(Tokens[15], tok::l_brace, TT_RequiresExpressionLBrace); 294 EXPECT_TOKEN(Tokens[21], tok::r_brace, TT_Unknown); 295 EXPECT_EQ(Tokens[21]->MatchingParen, Tokens[15]); 296 EXPECT_TRUE(Tokens[21]->ClosesRequiresClause); 297 } 298 299 TEST_F(TokenAnnotatorTest, UnderstandsRequiresExpressions) { 300 auto Tokens = annotate("bool b = requires(int i) { i + 5; };"); 301 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 302 EXPECT_TOKEN(Tokens[3], tok::kw_requires, TT_RequiresExpression); 303 EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_RequiresExpressionLParen); 304 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 305 306 Tokens = annotate("if (requires(int i) { i + 5; }) return;"); 307 ASSERT_EQ(Tokens.size(), 17u) << Tokens; 308 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 309 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 310 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_RequiresExpressionLBrace); 311 312 Tokens = annotate("if (func() && requires(int i) { i + 5; }) return;"); 313 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 314 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresExpression); 315 EXPECT_TOKEN(Tokens[7], tok::l_paren, TT_RequiresExpressionLParen); 316 EXPECT_TOKEN(Tokens[11], tok::l_brace, TT_RequiresExpressionLBrace); 317 318 Tokens = annotate("foo(requires(const T t) {});"); 319 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 320 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 321 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 322 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 323 324 Tokens = annotate("foo(requires(const int t) {});"); 325 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 326 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 327 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 328 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 329 330 Tokens = annotate("foo(requires(const T t) {});"); 331 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 332 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 333 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 334 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 335 336 Tokens = annotate("foo(requires(int const* volatile t) {});"); 337 ASSERT_EQ(Tokens.size(), 15u) << Tokens; 338 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 339 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 340 EXPECT_TOKEN(Tokens[10], tok::l_brace, TT_RequiresExpressionLBrace); 341 342 Tokens = annotate("foo(requires(T const* volatile t) {});"); 343 ASSERT_EQ(Tokens.size(), 15u) << Tokens; 344 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 345 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 346 EXPECT_TOKEN(Tokens[10], tok::l_brace, TT_RequiresExpressionLBrace); 347 348 Tokens = 349 annotate("foo(requires(const typename Outer<T>::Inner * const t) {});"); 350 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 351 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 352 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 353 EXPECT_TOKEN(Tokens[16], tok::l_brace, TT_RequiresExpressionLBrace); 354 355 Tokens = annotate("template <typename T>\n" 356 "concept C = requires(T T) {\n" 357 " requires Bar<T> && Foo<T>;\n" 358 "};"); 359 ASSERT_EQ(Tokens.size(), 28u) << Tokens; 360 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 361 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 362 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 363 EXPECT_TOKEN(Tokens[14], tok::kw_requires, 364 TT_RequiresClauseInARequiresExpression); 365 366 Tokens = annotate("template <typename T>\n" 367 "concept C = requires(T T) {\n" 368 " { t.func() } -> std::same_as<int>;" 369 " requires Bar<T> && Foo<T>;\n" 370 "};"); 371 ASSERT_EQ(Tokens.size(), 43u) << Tokens; 372 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 373 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 374 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 375 EXPECT_TOKEN(Tokens[29], tok::kw_requires, 376 TT_RequiresClauseInARequiresExpression); 377 378 // Invalid Code, but we don't want to crash. See http://llvm.org/PR54350. 379 Tokens = annotate("bool r10 = requires (struct new_struct { int x; } s) { " 380 "requires true; };"); 381 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 382 EXPECT_TOKEN(Tokens[3], tok::kw_requires, TT_RequiresExpression); 383 EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_RequiresExpressionLParen); 384 EXPECT_TOKEN(Tokens[14], tok::l_brace, TT_RequiresExpressionLBrace); 385 } 386 387 TEST_F(TokenAnnotatorTest, RequiresDoesNotChangeParsingOfTheRest) { 388 auto NumberOfAdditionalRequiresClauseTokens = 5u; 389 auto NumberOfTokensBeforeRequires = 5u; 390 391 auto BaseTokens = annotate("template<typename T>\n" 392 "T Pi = 3.14;"); 393 auto ConstrainedTokens = annotate("template<typename T>\n" 394 " requires Foo<T>\n" 395 "T Pi = 3.14;"); 396 397 auto NumberOfBaseTokens = 11u; 398 399 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 400 ASSERT_EQ(ConstrainedTokens.size(), 401 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 402 << ConstrainedTokens; 403 404 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 405 if (I < NumberOfTokensBeforeRequires) 406 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 407 else 408 EXPECT_EQ(*BaseTokens[I], 409 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 410 << I; 411 412 BaseTokens = annotate("template<typename T>\n" 413 "struct Bar;"); 414 ConstrainedTokens = annotate("template<typename T>\n" 415 " requires Foo<T>\n" 416 "struct Bar;"); 417 NumberOfBaseTokens = 9u; 418 419 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 420 ASSERT_EQ(ConstrainedTokens.size(), 421 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 422 << ConstrainedTokens; 423 424 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 425 if (I < NumberOfTokensBeforeRequires) 426 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 427 else 428 EXPECT_EQ(*BaseTokens[I], 429 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 430 << I; 431 432 BaseTokens = annotate("template<typename T>\n" 433 "struct Bar {" 434 " T foo();\n" 435 " T bar();\n" 436 "};"); 437 ConstrainedTokens = annotate("template<typename T>\n" 438 " requires Foo<T>\n" 439 "struct Bar {" 440 " T foo();\n" 441 " T bar();\n" 442 "};"); 443 NumberOfBaseTokens = 21u; 444 445 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 446 ASSERT_EQ(ConstrainedTokens.size(), 447 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 448 << ConstrainedTokens; 449 450 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 451 if (I < NumberOfTokensBeforeRequires) 452 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 453 else 454 EXPECT_EQ(*BaseTokens[I], 455 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 456 << I; 457 458 BaseTokens = annotate("template<typename T>\n" 459 "Bar(T) -> Bar<T>;"); 460 ConstrainedTokens = annotate("template<typename T>\n" 461 " requires Foo<T>\n" 462 "Bar(T) -> Bar<T>;"); 463 NumberOfBaseTokens = 16u; 464 465 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 466 ASSERT_EQ(ConstrainedTokens.size(), 467 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 468 << ConstrainedTokens; 469 470 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 471 if (I < NumberOfTokensBeforeRequires) 472 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 473 else 474 EXPECT_EQ(*BaseTokens[I], 475 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 476 << I; 477 478 BaseTokens = annotate("template<typename T>\n" 479 "T foo();"); 480 ConstrainedTokens = annotate("template<typename T>\n" 481 " requires Foo<T>\n" 482 "T foo();"); 483 NumberOfBaseTokens = 11u; 484 485 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 486 ASSERT_EQ(ConstrainedTokens.size(), 487 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 488 << ConstrainedTokens; 489 490 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 491 if (I < NumberOfTokensBeforeRequires) 492 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 493 else 494 EXPECT_EQ(*BaseTokens[I], 495 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 496 << I; 497 498 BaseTokens = annotate("template<typename T>\n" 499 "T foo() {\n" 500 " auto bar = baz();\n" 501 " return bar + T{};\n" 502 "}"); 503 ConstrainedTokens = annotate("template<typename T>\n" 504 " requires Foo<T>\n" 505 "T foo() {\n" 506 " auto bar = baz();\n" 507 " return bar + T{};\n" 508 "}"); 509 NumberOfBaseTokens = 26u; 510 511 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 512 ASSERT_EQ(ConstrainedTokens.size(), 513 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 514 << ConstrainedTokens; 515 516 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 517 if (I < NumberOfTokensBeforeRequires) 518 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 519 else 520 EXPECT_EQ(*BaseTokens[I], 521 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 522 << I; 523 524 BaseTokens = annotate("template<typename T>\n" 525 "T foo();"); 526 ConstrainedTokens = annotate("template<typename T>\n" 527 "T foo() requires Foo<T>;"); 528 NumberOfBaseTokens = 11u; 529 NumberOfTokensBeforeRequires = 9u; 530 531 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 532 ASSERT_EQ(ConstrainedTokens.size(), 533 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 534 << ConstrainedTokens; 535 536 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 537 if (I < NumberOfTokensBeforeRequires) 538 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 539 else 540 EXPECT_EQ(*BaseTokens[I], 541 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 542 << I; 543 544 BaseTokens = annotate("template<typename T>\n" 545 "T foo() {\n" 546 " auto bar = baz();\n" 547 " return bar + T{};\n" 548 "}"); 549 ConstrainedTokens = annotate("template<typename T>\n" 550 "T foo() requires Foo<T> {\n" 551 " auto bar = baz();\n" 552 " return bar + T{};\n" 553 "}"); 554 NumberOfBaseTokens = 26u; 555 556 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 557 ASSERT_EQ(ConstrainedTokens.size(), 558 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 559 << ConstrainedTokens; 560 561 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 562 if (I < NumberOfTokensBeforeRequires) 563 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 564 else 565 EXPECT_EQ(*BaseTokens[I], 566 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 567 << I; 568 569 BaseTokens = annotate("template<typename T>\n" 570 "Bar(T) -> Bar<typename T::I>;"); 571 ConstrainedTokens = annotate("template<typename T>\n" 572 " requires requires(T &&t) {\n" 573 " typename T::I;\n" 574 " }\n" 575 "Bar(T) -> Bar<typename T::I>;"); 576 NumberOfBaseTokens = 19u; 577 NumberOfAdditionalRequiresClauseTokens = 14u; 578 NumberOfTokensBeforeRequires = 5u; 579 580 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 581 ASSERT_EQ(ConstrainedTokens.size(), 582 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 583 << ConstrainedTokens; 584 585 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 586 if (I < NumberOfTokensBeforeRequires) 587 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 588 else 589 EXPECT_EQ(*BaseTokens[I], 590 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 591 << I; 592 593 BaseTokens = annotate("struct [[nodiscard]] zero_t {\n" 594 " template<class T>\n" 595 " [[nodiscard]] constexpr operator T() const { " 596 "return number_zero_v<T>; }\n" 597 "};"); 598 599 ConstrainedTokens = annotate("struct [[nodiscard]] zero_t {\n" 600 " template<class T>\n" 601 " requires requires { number_zero_v<T>; }\n" 602 " [[nodiscard]] constexpr operator T() const { " 603 "return number_zero_v<T>; }\n" 604 "};"); 605 NumberOfBaseTokens = 35u; 606 NumberOfAdditionalRequiresClauseTokens = 9u; 607 NumberOfTokensBeforeRequires = 13u; 608 609 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 610 ASSERT_EQ(ConstrainedTokens.size(), 611 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 612 << ConstrainedTokens; 613 614 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 615 if (I < NumberOfTokensBeforeRequires) 616 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 617 else 618 EXPECT_EQ(*BaseTokens[I], 619 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 620 << I; 621 } 622 623 TEST_F(TokenAnnotatorTest, UnderstandsAsm) { 624 auto Tokens = annotate("__asm{\n" 625 "a:\n" 626 "};"); 627 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 628 EXPECT_TOKEN(Tokens[0], tok::kw_asm, TT_Unknown); 629 EXPECT_TOKEN(Tokens[1], tok::l_brace, TT_InlineASMBrace); 630 EXPECT_TOKEN(Tokens[4], tok::r_brace, TT_InlineASMBrace); 631 } 632 633 TEST_F(TokenAnnotatorTest, UnderstandsObjCBlock) { 634 auto Tokens = annotate("int (^)() = ^ ()\n" 635 " external_source_symbol() { //\n" 636 " return 1;\n" 637 "};"); 638 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 639 EXPECT_TOKEN(Tokens[1], tok::l_paren, TT_ObjCBlockLParen); 640 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_ObjCBlockLBrace); 641 642 Tokens = annotate("int *p = ^int*(){ //\n" 643 " return nullptr;\n" 644 "}();"); 645 ASSERT_EQ(Tokens.size(), 19u) << Tokens; 646 EXPECT_TOKEN(Tokens[9], tok::l_brace, TT_ObjCBlockLBrace); 647 } 648 649 } // namespace 650 } // namespace format 651 } // namespace clang 652