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 // Invalid Code, but we don't want to crash. See http://llvm.org/PR54350. 361 Tokens = annotate("bool r10 = requires (struct new_struct { int x; } s) { " 362 "requires true; };"); 363 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 364 EXPECT_TOKEN(Tokens[3], tok::kw_requires, TT_RequiresExpression); 365 EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_RequiresExpressionLParen); 366 EXPECT_TOKEN(Tokens[14], tok::l_brace, TT_RequiresExpressionLBrace); 367 } 368 369 TEST_F(TokenAnnotatorTest, RequiresDoesNotChangeParsingOfTheRest) { 370 auto NumberOfAdditionalRequiresClauseTokens = 5u; 371 auto NumberOfTokensBeforeRequires = 5u; 372 373 auto BaseTokens = annotate("template<typename T>\n" 374 "T Pi = 3.14;"); 375 auto ConstrainedTokens = annotate("template<typename T>\n" 376 " requires Foo<T>\n" 377 "T Pi = 3.14;"); 378 379 auto NumberOfBaseTokens = 11u; 380 381 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 382 ASSERT_EQ(ConstrainedTokens.size(), 383 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 384 << ConstrainedTokens; 385 386 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 387 if (I < NumberOfTokensBeforeRequires) 388 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 389 else 390 EXPECT_EQ(*BaseTokens[I], 391 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 392 << I; 393 394 BaseTokens = annotate("template<typename T>\n" 395 "struct Bar;"); 396 ConstrainedTokens = annotate("template<typename T>\n" 397 " requires Foo<T>\n" 398 "struct Bar;"); 399 NumberOfBaseTokens = 9u; 400 401 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 402 ASSERT_EQ(ConstrainedTokens.size(), 403 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 404 << ConstrainedTokens; 405 406 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 407 if (I < NumberOfTokensBeforeRequires) 408 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 409 else 410 EXPECT_EQ(*BaseTokens[I], 411 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 412 << I; 413 414 BaseTokens = annotate("template<typename T>\n" 415 "struct Bar {" 416 " T foo();\n" 417 " T bar();\n" 418 "};"); 419 ConstrainedTokens = annotate("template<typename T>\n" 420 " requires Foo<T>\n" 421 "struct Bar {" 422 " T foo();\n" 423 " T bar();\n" 424 "};"); 425 NumberOfBaseTokens = 21u; 426 427 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 428 ASSERT_EQ(ConstrainedTokens.size(), 429 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 430 << ConstrainedTokens; 431 432 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 433 if (I < NumberOfTokensBeforeRequires) 434 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 435 else 436 EXPECT_EQ(*BaseTokens[I], 437 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 438 << I; 439 440 BaseTokens = annotate("template<typename T>\n" 441 "Bar(T) -> Bar<T>;"); 442 ConstrainedTokens = annotate("template<typename T>\n" 443 " requires Foo<T>\n" 444 "Bar(T) -> Bar<T>;"); 445 NumberOfBaseTokens = 16u; 446 447 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 448 ASSERT_EQ(ConstrainedTokens.size(), 449 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 450 << ConstrainedTokens; 451 452 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 453 if (I < NumberOfTokensBeforeRequires) 454 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 455 else 456 EXPECT_EQ(*BaseTokens[I], 457 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 458 << I; 459 460 BaseTokens = annotate("template<typename T>\n" 461 "T foo();"); 462 ConstrainedTokens = annotate("template<typename T>\n" 463 " requires Foo<T>\n" 464 "T foo();"); 465 NumberOfBaseTokens = 11u; 466 467 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 468 ASSERT_EQ(ConstrainedTokens.size(), 469 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 470 << ConstrainedTokens; 471 472 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 473 if (I < NumberOfTokensBeforeRequires) 474 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 475 else 476 EXPECT_EQ(*BaseTokens[I], 477 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 478 << I; 479 480 BaseTokens = annotate("template<typename T>\n" 481 "T foo() {\n" 482 " auto bar = baz();\n" 483 " return bar + T{};\n" 484 "}"); 485 ConstrainedTokens = annotate("template<typename T>\n" 486 " requires Foo<T>\n" 487 "T foo() {\n" 488 " auto bar = baz();\n" 489 " return bar + T{};\n" 490 "}"); 491 NumberOfBaseTokens = 26u; 492 493 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 494 ASSERT_EQ(ConstrainedTokens.size(), 495 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 496 << ConstrainedTokens; 497 498 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 499 if (I < NumberOfTokensBeforeRequires) 500 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 501 else 502 EXPECT_EQ(*BaseTokens[I], 503 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 504 << I; 505 506 BaseTokens = annotate("template<typename T>\n" 507 "T foo();"); 508 ConstrainedTokens = annotate("template<typename T>\n" 509 "T foo() requires Foo<T>;"); 510 NumberOfBaseTokens = 11u; 511 NumberOfTokensBeforeRequires = 9u; 512 513 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 514 ASSERT_EQ(ConstrainedTokens.size(), 515 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 516 << ConstrainedTokens; 517 518 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 519 if (I < NumberOfTokensBeforeRequires) 520 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 521 else 522 EXPECT_EQ(*BaseTokens[I], 523 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 524 << I; 525 526 BaseTokens = annotate("template<typename T>\n" 527 "T foo() {\n" 528 " auto bar = baz();\n" 529 " return bar + T{};\n" 530 "}"); 531 ConstrainedTokens = annotate("template<typename T>\n" 532 "T foo() requires Foo<T> {\n" 533 " auto bar = baz();\n" 534 " return bar + T{};\n" 535 "}"); 536 NumberOfBaseTokens = 26u; 537 538 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 539 ASSERT_EQ(ConstrainedTokens.size(), 540 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 541 << ConstrainedTokens; 542 543 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 544 if (I < NumberOfTokensBeforeRequires) 545 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 546 else 547 EXPECT_EQ(*BaseTokens[I], 548 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 549 << I; 550 551 BaseTokens = annotate("template<typename T>\n" 552 "Bar(T) -> Bar<typename T::I>;"); 553 ConstrainedTokens = annotate("template<typename T>\n" 554 " requires requires(T &&t) {\n" 555 " typename T::I;\n" 556 " }\n" 557 "Bar(T) -> Bar<typename T::I>;"); 558 NumberOfBaseTokens = 19u; 559 NumberOfAdditionalRequiresClauseTokens = 14u; 560 NumberOfTokensBeforeRequires = 5u; 561 562 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 563 ASSERT_EQ(ConstrainedTokens.size(), 564 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 565 << ConstrainedTokens; 566 567 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 568 if (I < NumberOfTokensBeforeRequires) 569 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 570 else 571 EXPECT_EQ(*BaseTokens[I], 572 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 573 << I; 574 575 BaseTokens = annotate("struct [[nodiscard]] zero_t {\n" 576 " template<class T>\n" 577 " [[nodiscard]] constexpr operator T() const { " 578 "return number_zero_v<T>; }\n" 579 "};"); 580 581 ConstrainedTokens = annotate("struct [[nodiscard]] zero_t {\n" 582 " template<class T>\n" 583 " requires requires { number_zero_v<T>; }\n" 584 " [[nodiscard]] constexpr operator T() const { " 585 "return number_zero_v<T>; }\n" 586 "};"); 587 NumberOfBaseTokens = 35u; 588 NumberOfAdditionalRequiresClauseTokens = 9u; 589 NumberOfTokensBeforeRequires = 13u; 590 591 ASSERT_EQ(BaseTokens.size(), NumberOfBaseTokens) << BaseTokens; 592 ASSERT_EQ(ConstrainedTokens.size(), 593 NumberOfBaseTokens + NumberOfAdditionalRequiresClauseTokens) 594 << ConstrainedTokens; 595 596 for (auto I = 0u; I < NumberOfBaseTokens; ++I) 597 if (I < NumberOfTokensBeforeRequires) 598 EXPECT_EQ(*BaseTokens[I], *ConstrainedTokens[I]) << I; 599 else 600 EXPECT_EQ(*BaseTokens[I], 601 *ConstrainedTokens[I + NumberOfAdditionalRequiresClauseTokens]) 602 << I; 603 } 604 605 TEST_F(TokenAnnotatorTest, UnderstandsAsm) { 606 auto Tokens = annotate("__asm{\n" 607 "a:\n" 608 "};"); 609 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 610 EXPECT_TOKEN(Tokens[0], tok::kw_asm, TT_Unknown); 611 EXPECT_TOKEN(Tokens[1], tok::l_brace, TT_InlineASMBrace); 612 EXPECT_TOKEN(Tokens[4], tok::r_brace, TT_InlineASMBrace); 613 } 614 615 } // namespace 616 } // namespace format 617 } // namespace clang 618