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, UnderstandsRequiresClausesAndConcepts) { 174 auto Tokens = annotate("template <typename T>\n" 175 "concept C = (Foo && Bar) && (Bar && Baz);"); 176 177 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 178 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 179 EXPECT_TOKEN(Tokens[13], tok::ampamp, TT_BinaryOperator); 180 EXPECT_TOKEN(Tokens[16], tok::ampamp, TT_BinaryOperator); 181 182 Tokens = annotate("template <typename T>\n" 183 "concept C = requires(T t) {\n" 184 " { t.foo() };\n" 185 "} && Bar<T> && Baz<T>;"); 186 ASSERT_EQ(Tokens.size(), 35u) << Tokens; 187 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 188 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 189 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 190 EXPECT_TOKEN(Tokens[23], tok::ampamp, TT_BinaryOperator); 191 EXPECT_TOKEN(Tokens[28], tok::ampamp, TT_BinaryOperator); 192 193 Tokens = annotate("template<typename T>\n" 194 "requires C1<T> && (C21<T> || C22<T> && C2e<T>) && C3<T>\n" 195 "struct Foo;"); 196 ASSERT_EQ(Tokens.size(), 36u) << Tokens; 197 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 198 EXPECT_TOKEN(Tokens[6], tok::identifier, TT_Unknown); 199 EXPECT_EQ(Tokens[6]->FakeLParens.size(), 1u); 200 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 201 EXPECT_TOKEN(Tokens[16], tok::pipepipe, TT_BinaryOperator); 202 EXPECT_TOKEN(Tokens[21], tok::ampamp, TT_BinaryOperator); 203 EXPECT_TOKEN(Tokens[27], tok::ampamp, TT_BinaryOperator); 204 EXPECT_TOKEN(Tokens[31], tok::greater, TT_TemplateCloser); 205 EXPECT_EQ(Tokens[31]->FakeRParens, 1u); 206 EXPECT_TRUE(Tokens[31]->ClosesRequiresClause); 207 208 Tokens = 209 annotate("template<typename T>\n" 210 "requires (C1<T> && (C21<T> || C22<T> && C2e<T>) && C3<T>)\n" 211 "struct Foo;"); 212 ASSERT_EQ(Tokens.size(), 38u) << Tokens; 213 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 214 EXPECT_TOKEN(Tokens[7], tok::identifier, TT_Unknown); 215 EXPECT_EQ(Tokens[7]->FakeLParens.size(), 1u); 216 EXPECT_TOKEN(Tokens[11], tok::ampamp, TT_BinaryOperator); 217 EXPECT_TOKEN(Tokens[17], tok::pipepipe, TT_BinaryOperator); 218 EXPECT_TOKEN(Tokens[22], tok::ampamp, TT_BinaryOperator); 219 EXPECT_TOKEN(Tokens[28], tok::ampamp, TT_BinaryOperator); 220 EXPECT_TOKEN(Tokens[32], tok::greater, TT_TemplateCloser); 221 EXPECT_EQ(Tokens[32]->FakeRParens, 1u); 222 EXPECT_TOKEN(Tokens[33], tok::r_paren, TT_Unknown); 223 EXPECT_TRUE(Tokens[33]->ClosesRequiresClause); 224 225 Tokens = annotate("template <typename T>\n" 226 "void foo(T) noexcept requires Bar<T>;"); 227 ASSERT_EQ(Tokens.size(), 18u) << Tokens; 228 EXPECT_TOKEN(Tokens[11], tok::kw_requires, TT_RequiresClause); 229 230 Tokens = annotate("template <typename T>\n" 231 "struct S {\n" 232 " void foo() const requires Bar<T>;\n" 233 " void bar() const & requires Baz<T>;\n" 234 " void bar() && requires Baz2<T>;\n" 235 " void baz() const & noexcept requires Baz<T>;\n" 236 " void baz() && noexcept requires Baz2<T>;\n" 237 "};\n" 238 "\n" 239 "void S::bar() const & requires Baz<T> { }"); 240 ASSERT_EQ(Tokens.size(), 85u) << Tokens; 241 EXPECT_TOKEN(Tokens[13], tok::kw_requires, TT_RequiresClause); 242 EXPECT_TOKEN(Tokens[25], tok::kw_requires, TT_RequiresClause); 243 EXPECT_TOKEN(Tokens[36], tok::kw_requires, TT_RequiresClause); 244 EXPECT_TOKEN(Tokens[49], tok::kw_requires, TT_RequiresClause); 245 EXPECT_TOKEN(Tokens[61], tok::kw_requires, TT_RequiresClause); 246 EXPECT_TOKEN(Tokens[77], tok::kw_requires, TT_RequiresClause); 247 248 Tokens = annotate("void Class::member() && requires(Constant) {}"); 249 ASSERT_EQ(Tokens.size(), 14u) << Tokens; 250 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 251 252 Tokens = annotate("void Class::member() && requires(Constant<T>) {}"); 253 ASSERT_EQ(Tokens.size(), 17u) << Tokens; 254 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 255 256 Tokens = 257 annotate("void Class::member() && requires(Namespace::Constant<T>) {}"); 258 ASSERT_EQ(Tokens.size(), 19u) << Tokens; 259 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 260 261 Tokens = annotate("void Class::member() && requires(typename " 262 "Namespace::Outer<T>::Inner::Constant) {}"); 263 ASSERT_EQ(Tokens.size(), 24u) << Tokens; 264 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 265 266 Tokens = annotate("struct [[nodiscard]] zero_t {\n" 267 " template<class T>\n" 268 " requires requires { number_zero_v<T>; }\n" 269 " [[nodiscard]] constexpr operator T() const { " 270 "return number_zero_v<T>; }\n" 271 "};"); 272 ASSERT_EQ(Tokens.size(), 44u); 273 EXPECT_TOKEN(Tokens[13], tok::kw_requires, TT_RequiresClause); 274 EXPECT_TOKEN(Tokens[14], tok::kw_requires, TT_RequiresExpression); 275 EXPECT_TOKEN(Tokens[15], tok::l_brace, TT_RequiresExpressionLBrace); 276 EXPECT_TOKEN(Tokens[21], tok::r_brace, TT_Unknown); 277 EXPECT_EQ(Tokens[21]->MatchingParen, Tokens[15]); 278 EXPECT_TRUE(Tokens[21]->ClosesRequiresClause); 279 } 280 281 TEST_F(TokenAnnotatorTest, UnderstandsRequiresExpressions) { 282 auto Tokens = annotate("bool b = requires(int i) { i + 5; };"); 283 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 284 EXPECT_TOKEN(Tokens[3], tok::kw_requires, TT_RequiresExpression); 285 EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_RequiresExpressionLParen); 286 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 287 288 Tokens = annotate("if (requires(int i) { i + 5; }) return;"); 289 ASSERT_EQ(Tokens.size(), 17u) << Tokens; 290 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 291 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 292 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_RequiresExpressionLBrace); 293 294 Tokens = annotate("if (func() && requires(int i) { i + 5; }) return;"); 295 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 296 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresExpression); 297 EXPECT_TOKEN(Tokens[7], tok::l_paren, TT_RequiresExpressionLParen); 298 EXPECT_TOKEN(Tokens[11], tok::l_brace, TT_RequiresExpressionLBrace); 299 300 Tokens = annotate("foo(requires(const T t) {});"); 301 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 302 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 303 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 304 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 305 306 Tokens = annotate("foo(requires(const int t) {});"); 307 ASSERT_EQ(Tokens.size(), 13u) << 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[8], tok::l_brace, TT_RequiresExpressionLBrace); 311 312 Tokens = annotate("foo(requires(const T t) {});"); 313 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 314 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 315 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 316 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 317 318 Tokens = annotate("foo(requires(int const* volatile t) {});"); 319 ASSERT_EQ(Tokens.size(), 15u) << 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[10], tok::l_brace, TT_RequiresExpressionLBrace); 323 324 Tokens = annotate("foo(requires(T const* volatile t) {});"); 325 ASSERT_EQ(Tokens.size(), 15u) << 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[10], tok::l_brace, TT_RequiresExpressionLBrace); 329 330 Tokens = 331 annotate("foo(requires(const typename Outer<T>::Inner * const t) {});"); 332 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 333 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 334 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 335 EXPECT_TOKEN(Tokens[16], tok::l_brace, TT_RequiresExpressionLBrace); 336 337 Tokens = annotate("template <typename T>\n" 338 "concept C = requires(T T) {\n" 339 " requires Bar<T> && Foo<T>;\n" 340 "};"); 341 ASSERT_EQ(Tokens.size(), 28u) << Tokens; 342 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 343 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 344 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 345 EXPECT_TOKEN(Tokens[14], tok::kw_requires, 346 TT_RequiresClauseInARequiresExpression); 347 348 Tokens = annotate("template <typename T>\n" 349 "concept C = requires(T T) {\n" 350 " { t.func() } -> std::same_as<int>;" 351 " requires Bar<T> && Foo<T>;\n" 352 "};"); 353 ASSERT_EQ(Tokens.size(), 43u) << Tokens; 354 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 355 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 356 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 357 EXPECT_TOKEN(Tokens[29], tok::kw_requires, 358 TT_RequiresClauseInARequiresExpression); 359 } 360 361 TEST_F(TokenAnnotatorTest, RequiresDoesNotChangeParsingOfTheRest) { 362 auto NumberOfAdditionalRequiresClauseTokens = 5u; 363 auto NumberOfTokensBeforeRequires = 5u; 364 365 auto BaseTokens = annotate("template<typename T>\n" 366 "T Pi = 3.14;"); 367 auto ConstrainedTokens = annotate("template<typename T>\n" 368 " requires Foo<T>\n" 369 "T Pi = 3.14;"); 370 371 auto NumberOfBaseTokens = 11u; 372 373 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 374 ASSERT_EQ(ConstrainedTokens.size(), 375 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 376 << ConstrainedTokens; 377 378 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 379 if (I < NumberOfTokensBeforeRequires) 380 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 381 else 382 EXPECT_EQ(*BaseTokens[I], 383 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 384 << I; 385 386 BaseTokens = annotate("template<typename T>\n" 387 "struct Bar;"); 388 ConstrainedTokens = annotate("template<typename T>\n" 389 " requires Foo<T>\n" 390 "struct Bar;"); 391 NumberOfBaseTokens = 9u; 392 393 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 394 ASSERT_EQ(ConstrainedTokens.size(), 395 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 396 << ConstrainedTokens; 397 398 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 399 if (I < NumberOfTokensBeforeRequires) 400 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 401 else 402 EXPECT_EQ(*BaseTokens[I], 403 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 404 << I; 405 406 BaseTokens = annotate("template<typename T>\n" 407 "struct Bar {" 408 " T foo();\n" 409 " T bar();\n" 410 "};"); 411 ConstrainedTokens = annotate("template<typename T>\n" 412 " requires Foo<T>\n" 413 "struct Bar {" 414 " T foo();\n" 415 " T bar();\n" 416 "};"); 417 NumberOfBaseTokens = 21u; 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 "Bar(T) -> Bar<T>;"); 434 ConstrainedTokens = annotate("template<typename T>\n" 435 " requires Foo<T>\n" 436 "Bar(T) -> Bar<T>;"); 437 NumberOfBaseTokens = 16u; 438 439 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 440 ASSERT_EQ(ConstrainedTokens.size(), 441 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 442 << ConstrainedTokens; 443 444 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 445 if (I < NumberOfTokensBeforeRequires) 446 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 447 else 448 EXPECT_EQ(*BaseTokens[I], 449 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 450 << I; 451 452 BaseTokens = annotate("template<typename T>\n" 453 "T foo();"); 454 ConstrainedTokens = annotate("template<typename T>\n" 455 " requires Foo<T>\n" 456 "T foo();"); 457 NumberOfBaseTokens = 11u; 458 459 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 460 ASSERT_EQ(ConstrainedTokens.size(), 461 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 462 << ConstrainedTokens; 463 464 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 465 if (I < NumberOfTokensBeforeRequires) 466 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 467 else 468 EXPECT_EQ(*BaseTokens[I], 469 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 470 << I; 471 472 BaseTokens = annotate("template<typename T>\n" 473 "T foo() {\n" 474 " auto bar = baz();\n" 475 " return bar + T{};\n" 476 "}"); 477 ConstrainedTokens = annotate("template<typename T>\n" 478 " requires Foo<T>\n" 479 "T foo() {\n" 480 " auto bar = baz();\n" 481 " return bar + T{};\n" 482 "}"); 483 NumberOfBaseTokens = 26u; 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();"); 500 ConstrainedTokens = annotate("template<typename T>\n" 501 "T foo() requires Foo<T>;"); 502 NumberOfBaseTokens = 11u; 503 NumberOfTokensBeforeRequires = 9u; 504 505 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 506 ASSERT_EQ(ConstrainedTokens.size(), 507 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 508 << ConstrainedTokens; 509 510 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 511 if (I < NumberOfTokensBeforeRequires) 512 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 513 else 514 EXPECT_EQ(*BaseTokens[I], 515 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 516 << I; 517 518 BaseTokens = annotate("template<typename T>\n" 519 "T foo() {\n" 520 " auto bar = baz();\n" 521 " return bar + T{};\n" 522 "}"); 523 ConstrainedTokens = annotate("template<typename T>\n" 524 "T foo() requires Foo<T> {\n" 525 " auto bar = baz();\n" 526 " return bar + T{};\n" 527 "}"); 528 NumberOfBaseTokens = 26u; 529 530 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 531 ASSERT_EQ(ConstrainedTokens.size(), 532 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 533 << ConstrainedTokens; 534 535 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 536 if (I < NumberOfTokensBeforeRequires) 537 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 538 else 539 EXPECT_EQ(*BaseTokens[I], 540 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 541 << I; 542 543 BaseTokens = annotate("template<typename T>\n" 544 "Bar(T) -> Bar<typename T::I>;"); 545 ConstrainedTokens = annotate("template<typename T>\n" 546 " requires requires(T &&t) {\n" 547 " typename T::I;\n" 548 " }\n" 549 "Bar(T) -> Bar<typename T::I>;"); 550 NumberOfBaseTokens = 19u; 551 NumberOfAdditionalRequiresClauseTokens = 14u; 552 NumberOfTokensBeforeRequires = 5u; 553 554 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 555 ASSERT_EQ(ConstrainedTokens.size(), 556 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 557 << ConstrainedTokens; 558 559 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 560 if (I < NumberOfTokensBeforeRequires) 561 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 562 else 563 EXPECT_EQ(*BaseTokens[I], 564 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 565 << I; 566 567 BaseTokens = annotate("struct [[nodiscard]] zero_t {\n" 568 " template<class T>\n" 569 " [[nodiscard]] constexpr operator T() const { " 570 "return number_zero_v<T>; }\n" 571 "};"); 572 573 ConstrainedTokens = annotate("struct [[nodiscard]] zero_t {\n" 574 " template<class T>\n" 575 " requires requires { number_zero_v<T>; }\n" 576 " [[nodiscard]] constexpr operator T() const { " 577 "return number_zero_v<T>; }\n" 578 "};"); 579 NumberOfBaseTokens = 35u; 580 NumberOfAdditionalRequiresClauseTokens = 9u; 581 NumberOfTokensBeforeRequires = 13u; 582 583 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 584 ASSERT_EQ(ConstrainedTokens.size(), 585 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 586 << ConstrainedTokens; 587 588 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 589 if (I < NumberOfTokensBeforeRequires) 590 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 591 else 592 EXPECT_EQ(*BaseTokens[I], 593 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 594 << I; 595 } 596 597 } // namespace 598 } // namespace format 599 } // namespace clang 600