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_PRECEDENCE(FormatTok, Prec) \ 42 EXPECT_EQ((FormatTok)->getPrecedence(), Prec) << *(FormatTok) 43 #define EXPECT_TOKEN(FormatTok, Kind, Type) \ 44 do { \ 45 EXPECT_TOKEN_KIND(FormatTok, Kind); \ 46 EXPECT_TOKEN_TYPE(FormatTok, Type); \ 47 } while (false) 48 49 TEST_F(TokenAnnotatorTest, UnderstandsUsesOfStarAndAmp) { 50 auto Tokens = annotate("auto x = [](const decltype(x) &ptr) {};"); 51 EXPECT_EQ(Tokens.size(), 18u) << Tokens; 52 EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown); 53 EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen); 54 EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown); 55 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 56 EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference); 57 58 Tokens = annotate("auto x = [](const decltype(x) *ptr) {};"); 59 EXPECT_EQ(Tokens.size(), 18u) << Tokens; 60 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 61 EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference); 62 63 Tokens = annotate("#define lambda [](const decltype(x) &ptr) {}"); 64 EXPECT_EQ(Tokens.size(), 17u) << Tokens; 65 EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown); 66 EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen); 67 EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown); 68 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 69 EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference); 70 71 Tokens = annotate("#define lambda [](const decltype(x) *ptr) {}"); 72 EXPECT_EQ(Tokens.size(), 17u) << Tokens; 73 EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen); 74 EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference); 75 76 Tokens = annotate("void f() {\n" 77 " while (p < a && *p == 'a')\n" 78 " p++;\n" 79 "}"); 80 EXPECT_EQ(Tokens.size(), 21u) << Tokens; 81 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 82 EXPECT_TOKEN(Tokens[11], tok::star, TT_UnaryOperator); 83 84 Tokens = annotate("case *x:"); 85 EXPECT_EQ(Tokens.size(), 5u) << Tokens; 86 EXPECT_TOKEN(Tokens[1], tok::star, TT_UnaryOperator); 87 Tokens = annotate("case &x:"); 88 EXPECT_EQ(Tokens.size(), 5u) << Tokens; 89 EXPECT_TOKEN(Tokens[1], tok::amp, TT_UnaryOperator); 90 91 Tokens = annotate("bool b = 3 == int{3} && true;\n"); 92 EXPECT_EQ(Tokens.size(), 13u) << Tokens; 93 EXPECT_TOKEN(Tokens[9], tok::ampamp, TT_BinaryOperator); 94 95 Tokens = annotate("struct {\n" 96 "} *ptr;"); 97 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 98 EXPECT_TOKEN(Tokens[3], tok::star, TT_PointerOrReference); 99 Tokens = annotate("union {\n" 100 "} *ptr;"); 101 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 102 EXPECT_TOKEN(Tokens[3], tok::star, TT_PointerOrReference); 103 Tokens = annotate("class {\n" 104 "} *ptr;"); 105 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 106 EXPECT_TOKEN(Tokens[3], tok::star, TT_PointerOrReference); 107 108 Tokens = annotate("struct {\n" 109 "} &&ptr = {};"); 110 EXPECT_EQ(Tokens.size(), 10u) << Tokens; 111 EXPECT_TOKEN(Tokens[3], tok::ampamp, TT_PointerOrReference); 112 Tokens = annotate("union {\n" 113 "} &&ptr = {};"); 114 EXPECT_EQ(Tokens.size(), 10u) << Tokens; 115 EXPECT_TOKEN(Tokens[3], tok::ampamp, TT_PointerOrReference); 116 Tokens = annotate("class {\n" 117 "} &&ptr = {};"); 118 EXPECT_EQ(Tokens.size(), 10u) << Tokens; 119 EXPECT_TOKEN(Tokens[3], tok::ampamp, TT_PointerOrReference); 120 Tokens = annotate("int i = int{42} * 2;"); 121 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 122 EXPECT_TOKEN(Tokens[7], tok::star, TT_BinaryOperator); 123 124 Tokens = annotate("delete[] *ptr;"); 125 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 126 EXPECT_TOKEN(Tokens[3], tok::star, TT_UnaryOperator); 127 Tokens = annotate("delete[] **ptr;"); 128 EXPECT_EQ(Tokens.size(), 8u) << Tokens; 129 EXPECT_TOKEN(Tokens[3], tok::star, TT_UnaryOperator); 130 EXPECT_TOKEN(Tokens[4], tok::star, TT_UnaryOperator); 131 Tokens = annotate("delete[] *(ptr);"); 132 EXPECT_EQ(Tokens.size(), 9u) << Tokens; 133 EXPECT_TOKEN(Tokens[3], tok::star, TT_UnaryOperator); 134 135 Tokens = annotate("void f() { void (*fnptr)(char* foo); }"); 136 EXPECT_EQ(Tokens.size(), 18u) << Tokens; 137 EXPECT_TOKEN(Tokens[6], tok::l_paren, TT_FunctionTypeLParen); 138 // FIXME: The star of a function pointer probably makes more sense as 139 // TT_PointerOrReference. 140 EXPECT_TOKEN(Tokens[7], tok::star, TT_UnaryOperator); 141 EXPECT_TOKEN(Tokens[12], tok::star, TT_PointerOrReference); 142 143 Tokens = annotate("void f() { void (*fnptr)(t* foo); }"); 144 EXPECT_EQ(Tokens.size(), 18u) << Tokens; 145 EXPECT_TOKEN(Tokens[6], tok::l_paren, TT_FunctionTypeLParen); 146 EXPECT_TOKEN(Tokens[7], tok::star, TT_UnaryOperator); 147 EXPECT_TOKEN(Tokens[12], tok::star, TT_PointerOrReference); 148 } 149 150 TEST_F(TokenAnnotatorTest, UnderstandsUsesOfPlusAndMinus) { 151 auto Tokens = annotate("x - 0"); 152 ASSERT_EQ(Tokens.size(), 4u) << Tokens; 153 EXPECT_TOKEN(Tokens[1], tok::minus, TT_BinaryOperator); 154 Tokens = annotate("0 + 0"); 155 ASSERT_EQ(Tokens.size(), 4u) << Tokens; 156 EXPECT_TOKEN(Tokens[1], tok::plus, TT_BinaryOperator); 157 Tokens = annotate("x + +0"); 158 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 159 EXPECT_TOKEN(Tokens[2], tok::plus, TT_UnaryOperator); 160 Tokens = annotate("x ? -0 : +0"); 161 ASSERT_EQ(Tokens.size(), 8u) << Tokens; 162 EXPECT_TOKEN(Tokens[2], tok::minus, TT_UnaryOperator); 163 EXPECT_TOKEN(Tokens[5], tok::plus, TT_UnaryOperator); 164 Tokens = annotate("(-0)"); 165 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 166 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 167 Tokens = annotate("0, -0"); 168 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 169 EXPECT_TOKEN(Tokens[2], tok::minus, TT_UnaryOperator); 170 Tokens = annotate("for (; -1;) {\n}"); 171 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 172 EXPECT_TOKEN(Tokens[3], tok::minus, TT_UnaryOperator); 173 Tokens = annotate("x = -1;"); 174 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 175 EXPECT_TOKEN(Tokens[2], tok::minus, TT_UnaryOperator); 176 Tokens = annotate("x[-1]"); 177 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 178 EXPECT_TOKEN(Tokens[2], tok::minus, TT_UnaryOperator); 179 Tokens = annotate("x = {-1};"); 180 ASSERT_EQ(Tokens.size(), 8u) << Tokens; 181 EXPECT_TOKEN(Tokens[3], tok::minus, TT_UnaryOperator); 182 Tokens = annotate("case -x:"); 183 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 184 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 185 Tokens = annotate("co_await -x;"); 186 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 187 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 188 Tokens = annotate("co_return -x;"); 189 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 190 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 191 Tokens = annotate("co_yield -x;"); 192 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 193 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 194 Tokens = annotate("delete -x;"); 195 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 196 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 197 Tokens = annotate("return -x;"); 198 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 199 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 200 Tokens = annotate("throw -x;"); 201 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 202 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 203 Tokens = annotate("sizeof -x"); 204 ASSERT_EQ(Tokens.size(), 4u) << Tokens; 205 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 206 Tokens = annotate("co_await +x;"); 207 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 208 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 209 Tokens = annotate("co_return +x;"); 210 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 211 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 212 Tokens = annotate("co_yield +x;"); 213 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 214 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 215 Tokens = annotate("delete +x;"); 216 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 217 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 218 Tokens = annotate("return +x;"); 219 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 220 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 221 Tokens = annotate("throw +x;"); 222 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 223 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 224 Tokens = annotate("sizeof +x"); 225 ASSERT_EQ(Tokens.size(), 4u) << Tokens; 226 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 227 Tokens = annotate("(int)-x"); 228 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 229 EXPECT_TOKEN(Tokens[3], tok::minus, TT_UnaryOperator); 230 Tokens = annotate("(-x)"); 231 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 232 EXPECT_TOKEN(Tokens[1], tok::minus, TT_UnaryOperator); 233 Tokens = annotate("!+x"); 234 ASSERT_EQ(Tokens.size(), 4u) << Tokens; 235 EXPECT_TOKEN(Tokens[0], tok::exclaim, TT_UnaryOperator); 236 EXPECT_TOKEN(Tokens[1], tok::plus, TT_UnaryOperator); 237 } 238 239 TEST_F(TokenAnnotatorTest, UnderstandsClasses) { 240 auto Tokens = annotate("class C {};"); 241 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 242 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_ClassLBrace); 243 244 Tokens = annotate("const class C {} c;"); 245 EXPECT_EQ(Tokens.size(), 8u) << Tokens; 246 EXPECT_TOKEN(Tokens[3], tok::l_brace, TT_ClassLBrace); 247 248 Tokens = annotate("const class {} c;"); 249 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 250 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_ClassLBrace); 251 } 252 253 TEST_F(TokenAnnotatorTest, UnderstandsStructs) { 254 auto Tokens = annotate("struct S {};"); 255 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 256 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_StructLBrace); 257 } 258 259 TEST_F(TokenAnnotatorTest, UnderstandsUnions) { 260 auto Tokens = annotate("union U {};"); 261 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 262 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_UnionLBrace); 263 264 Tokens = annotate("union U { void f() { return; } };"); 265 EXPECT_EQ(Tokens.size(), 14u) << Tokens; 266 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_UnionLBrace); 267 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_FunctionLBrace); 268 } 269 270 TEST_F(TokenAnnotatorTest, UnderstandsEnums) { 271 auto Tokens = annotate("enum E {};"); 272 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 273 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_EnumLBrace); 274 } 275 276 TEST_F(TokenAnnotatorTest, UnderstandsDefaultedAndDeletedFunctions) { 277 auto Tokens = annotate("auto operator<=>(const T &) const & = default;"); 278 EXPECT_EQ(Tokens.size(), 14u) << Tokens; 279 EXPECT_TOKEN(Tokens[9], tok::amp, TT_PointerOrReference); 280 281 Tokens = annotate("template <typename T> void F(T) && = delete;"); 282 EXPECT_EQ(Tokens.size(), 15u) << Tokens; 283 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_PointerOrReference); 284 } 285 286 TEST_F(TokenAnnotatorTest, UnderstandsVariables) { 287 auto Tokens = 288 annotate("inline bool var = is_integral_v<int> && is_signed_v<int>;"); 289 EXPECT_EQ(Tokens.size(), 15u) << Tokens; 290 EXPECT_TOKEN(Tokens[8], tok::ampamp, TT_BinaryOperator); 291 } 292 293 TEST_F(TokenAnnotatorTest, UnderstandsVariableTemplates) { 294 auto Tokens = 295 annotate("template <typename T> " 296 "inline bool var = is_integral_v<int> && is_signed_v<int>;"); 297 EXPECT_EQ(Tokens.size(), 20u) << Tokens; 298 EXPECT_TOKEN(Tokens[13], tok::ampamp, TT_BinaryOperator); 299 } 300 301 TEST_F(TokenAnnotatorTest, UnderstandsTemplatesInMacros) { 302 auto Tokens = 303 annotate("#define FOO(typeName) \\\n" 304 " { #typeName, foo<FooType>(new foo<realClass>(#typeName)) }"); 305 ASSERT_EQ(Tokens.size(), 27u) << Tokens; 306 EXPECT_TOKEN(Tokens[11], tok::less, TT_TemplateOpener); 307 EXPECT_TOKEN(Tokens[13], tok::greater, TT_TemplateCloser); 308 EXPECT_TOKEN(Tokens[17], tok::less, TT_TemplateOpener); 309 EXPECT_TOKEN(Tokens[19], tok::greater, TT_TemplateCloser); 310 } 311 312 TEST_F(TokenAnnotatorTest, UnderstandsWhitespaceSensitiveMacros) { 313 FormatStyle Style = getLLVMStyle(); 314 Style.WhitespaceSensitiveMacros.push_back("FOO"); 315 316 auto Tokens = annotate("FOO(1+2 )\n", Style); 317 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 318 EXPECT_TOKEN(Tokens[0], tok::identifier, TT_UntouchableMacroFunc); 319 320 Tokens = annotate("FOO(a:b:c)\n", Style); 321 EXPECT_EQ(Tokens.size(), 9u) << Tokens; 322 EXPECT_TOKEN(Tokens[0], tok::identifier, TT_UntouchableMacroFunc); 323 } 324 325 TEST_F(TokenAnnotatorTest, UnderstandsDelete) { 326 auto Tokens = annotate("delete (void *)p;"); 327 EXPECT_EQ(Tokens.size(), 8u) << Tokens; 328 EXPECT_TOKEN(Tokens[4], tok::r_paren, TT_CastRParen); 329 330 Tokens = annotate("delete[] (void *)p;"); 331 EXPECT_EQ(Tokens.size(), 10u) << Tokens; 332 EXPECT_TOKEN(Tokens[6], tok::r_paren, TT_CastRParen); 333 334 Tokens = annotate("delete[] /*comment*/ (void *)p;"); 335 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 336 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 337 338 Tokens = annotate("delete[/*comment*/] (void *)p;"); 339 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 340 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 341 342 Tokens = annotate("delete/*comment*/[] (void *)p;"); 343 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 344 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 345 } 346 347 TEST_F(TokenAnnotatorTest, UnderstandsCasts) { 348 auto Tokens = annotate("(void)p;"); 349 EXPECT_EQ(Tokens.size(), 6u) << Tokens; 350 EXPECT_TOKEN(Tokens[2], tok::r_paren, TT_CastRParen); 351 352 Tokens = annotate("auto x = (Foo)p;"); 353 EXPECT_EQ(Tokens.size(), 9u) << Tokens; 354 EXPECT_TOKEN(Tokens[5], tok::r_paren, TT_CastRParen); 355 356 Tokens = annotate("(std::vector<int>)p;"); 357 EXPECT_EQ(Tokens.size(), 11u) << Tokens; 358 EXPECT_TOKEN(Tokens[7], tok::r_paren, TT_CastRParen); 359 360 Tokens = annotate("return (Foo)p;"); 361 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 362 EXPECT_TOKEN(Tokens[3], tok::r_paren, TT_CastRParen); 363 364 Tokens = annotate("throw (Foo)p;"); 365 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 366 EXPECT_TOKEN(Tokens[3], tok::r_paren, TT_CastRParen); 367 } 368 369 TEST_F(TokenAnnotatorTest, UnderstandsDynamicExceptionSpecifier) { 370 auto Tokens = annotate("void f() throw(int);"); 371 EXPECT_EQ(Tokens.size(), 10u) << Tokens; 372 EXPECT_TOKEN(Tokens[4], tok::kw_throw, TT_Unknown); 373 } 374 375 TEST_F(TokenAnnotatorTest, UnderstandsFunctionRefQualifiers) { 376 auto Tokens = annotate("void f() &;"); 377 EXPECT_EQ(Tokens.size(), 7u) << Tokens; 378 EXPECT_TOKEN(Tokens[4], tok::amp, TT_PointerOrReference); 379 380 Tokens = annotate("void operator=(T) &&;"); 381 EXPECT_EQ(Tokens.size(), 9u) << Tokens; 382 EXPECT_TOKEN(Tokens[6], tok::ampamp, TT_PointerOrReference); 383 384 Tokens = annotate("template <typename T> void f() &;"); 385 EXPECT_EQ(Tokens.size(), 12u) << Tokens; 386 EXPECT_TOKEN(Tokens[9], tok::amp, TT_PointerOrReference); 387 388 Tokens = annotate("template <typename T> void operator=(T) &;"); 389 EXPECT_EQ(Tokens.size(), 14u) << Tokens; 390 EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference); 391 } 392 393 TEST_F(TokenAnnotatorTest, UnderstandsRequiresClausesAndConcepts) { 394 auto Tokens = annotate("template <typename T>\n" 395 "concept C = (Foo && Bar) && (Bar && Baz);"); 396 397 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 398 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 399 EXPECT_TOKEN(Tokens[13], tok::ampamp, TT_BinaryOperator); 400 EXPECT_TOKEN(Tokens[16], tok::ampamp, TT_BinaryOperator); 401 402 Tokens = annotate("template <typename T>\n" 403 "concept C = Foo && !Bar;"); 404 405 ASSERT_EQ(Tokens.size(), 14u) << Tokens; 406 EXPECT_TOKEN(Tokens[9], tok::ampamp, TT_BinaryOperator); 407 EXPECT_TOKEN(Tokens[10], tok::exclaim, TT_UnaryOperator); 408 409 Tokens = annotate("template <typename T>\n" 410 "concept C = requires(T t) {\n" 411 " { t.foo() };\n" 412 "} && Bar<T> && Baz<T>;"); 413 ASSERT_EQ(Tokens.size(), 35u) << Tokens; 414 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 415 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 416 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 417 EXPECT_TOKEN(Tokens[23], tok::ampamp, TT_BinaryOperator); 418 EXPECT_TOKEN(Tokens[28], tok::ampamp, TT_BinaryOperator); 419 420 Tokens = annotate("template<typename T>\n" 421 "requires C1<T> && (C21<T> || C22<T> && C2e<T>) && C3<T>\n" 422 "struct Foo;"); 423 ASSERT_EQ(Tokens.size(), 36u) << Tokens; 424 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 425 EXPECT_TOKEN(Tokens[6], tok::identifier, TT_Unknown); 426 EXPECT_EQ(Tokens[6]->FakeLParens.size(), 1u); 427 EXPECT_TOKEN(Tokens[10], tok::ampamp, TT_BinaryOperator); 428 EXPECT_TOKEN(Tokens[16], tok::pipepipe, TT_BinaryOperator); 429 EXPECT_TOKEN(Tokens[21], tok::ampamp, TT_BinaryOperator); 430 EXPECT_TOKEN(Tokens[27], tok::ampamp, TT_BinaryOperator); 431 EXPECT_TOKEN(Tokens[31], tok::greater, TT_TemplateCloser); 432 EXPECT_EQ(Tokens[31]->FakeRParens, 1u); 433 EXPECT_TRUE(Tokens[31]->ClosesRequiresClause); 434 435 Tokens = 436 annotate("template<typename T>\n" 437 "requires (C1<T> && (C21<T> || C22<T> && C2e<T>) && C3<T>)\n" 438 "struct Foo;"); 439 ASSERT_EQ(Tokens.size(), 38u) << Tokens; 440 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 441 EXPECT_TOKEN(Tokens[7], tok::identifier, TT_Unknown); 442 EXPECT_EQ(Tokens[7]->FakeLParens.size(), 1u); 443 EXPECT_TOKEN(Tokens[11], tok::ampamp, TT_BinaryOperator); 444 EXPECT_TOKEN(Tokens[17], tok::pipepipe, TT_BinaryOperator); 445 EXPECT_TOKEN(Tokens[22], tok::ampamp, TT_BinaryOperator); 446 EXPECT_TOKEN(Tokens[28], tok::ampamp, TT_BinaryOperator); 447 EXPECT_TOKEN(Tokens[32], tok::greater, TT_TemplateCloser); 448 EXPECT_EQ(Tokens[32]->FakeRParens, 1u); 449 EXPECT_TOKEN(Tokens[33], tok::r_paren, TT_Unknown); 450 EXPECT_TRUE(Tokens[33]->ClosesRequiresClause); 451 452 Tokens = annotate("template <typename T>\n" 453 "void foo(T) noexcept requires Bar<T>;"); 454 ASSERT_EQ(Tokens.size(), 18u) << Tokens; 455 EXPECT_TOKEN(Tokens[11], tok::kw_requires, TT_RequiresClause); 456 457 Tokens = annotate("template <typename T>\n" 458 "requires Bar<T> || Baz<T>\n" 459 "auto foo(T) -> int;"); 460 ASSERT_EQ(Tokens.size(), 24u) << Tokens; 461 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 462 EXPECT_EQ(Tokens[11]->FakeLParens.size(), 0u); 463 EXPECT_TRUE(Tokens[14]->ClosesRequiresClause); 464 EXPECT_TOKEN(Tokens[20], tok::arrow, TT_TrailingReturnArrow); 465 466 Tokens = annotate("template <typename T>\n" 467 "requires Bar<T>\n" 468 "bool foo(T) { return false; }"); 469 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 470 EXPECT_TOKEN(Tokens[5], tok::kw_requires, TT_RequiresClause); 471 EXPECT_TRUE(Tokens[9]->ClosesRequiresClause); 472 EXPECT_TOKEN(Tokens[11], tok::identifier, TT_FunctionDeclarationName); 473 474 Tokens = annotate("template <typename T>\n" 475 "struct S {\n" 476 " void foo() const requires Bar<T>;\n" 477 " void bar() const & requires Baz<T>;\n" 478 " void bar() && requires Baz2<T>;\n" 479 " void baz() const & noexcept requires Baz<T>;\n" 480 " void baz() && noexcept requires Baz2<T>;\n" 481 "};\n" 482 "\n" 483 "void S::bar() const & requires Baz<T> { }"); 484 ASSERT_EQ(Tokens.size(), 85u) << Tokens; 485 EXPECT_TOKEN(Tokens[13], tok::kw_requires, TT_RequiresClause); 486 EXPECT_TOKEN(Tokens[25], tok::kw_requires, TT_RequiresClause); 487 EXPECT_TOKEN(Tokens[36], tok::kw_requires, TT_RequiresClause); 488 EXPECT_TOKEN(Tokens[49], tok::kw_requires, TT_RequiresClause); 489 EXPECT_TOKEN(Tokens[61], tok::kw_requires, TT_RequiresClause); 490 EXPECT_TOKEN(Tokens[77], tok::kw_requires, TT_RequiresClause); 491 492 Tokens = annotate("void Class::member() && requires(Constant) {}"); 493 ASSERT_EQ(Tokens.size(), 14u) << Tokens; 494 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 495 496 Tokens = annotate("void Class::member() && requires(Constant<T>) {}"); 497 ASSERT_EQ(Tokens.size(), 17u) << Tokens; 498 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 499 500 Tokens = 501 annotate("void Class::member() && requires(Namespace::Constant<T>) {}"); 502 ASSERT_EQ(Tokens.size(), 19u) << Tokens; 503 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 504 505 Tokens = annotate("void Class::member() && requires(typename " 506 "Namespace::Outer<T>::Inner::Constant) {}"); 507 ASSERT_EQ(Tokens.size(), 24u) << Tokens; 508 EXPECT_TOKEN(Tokens[7], tok::kw_requires, TT_RequiresClause); 509 510 Tokens = annotate("struct [[nodiscard]] zero_t {\n" 511 " template<class T>\n" 512 " requires requires { number_zero_v<T>; }\n" 513 " [[nodiscard]] constexpr operator T() const { " 514 "return number_zero_v<T>; }\n" 515 "};"); 516 ASSERT_EQ(Tokens.size(), 44u); 517 EXPECT_TOKEN(Tokens[13], tok::kw_requires, TT_RequiresClause); 518 EXPECT_TOKEN(Tokens[14], tok::kw_requires, TT_RequiresExpression); 519 EXPECT_TOKEN(Tokens[15], tok::l_brace, TT_RequiresExpressionLBrace); 520 EXPECT_TOKEN(Tokens[21], tok::r_brace, TT_Unknown); 521 EXPECT_EQ(Tokens[21]->MatchingParen, Tokens[15]); 522 EXPECT_TRUE(Tokens[21]->ClosesRequiresClause); 523 524 Tokens = 525 annotate("template <class A, class B> concept C =" 526 "std::same_as<std::iter_value_t<A>, std::iter_value_t<B>>;"); 527 ASSERT_EQ(Tokens.size(), 31u) << Tokens; 528 EXPECT_TOKEN(Tokens[8], tok::kw_concept, TT_Unknown); 529 EXPECT_TOKEN(Tokens[14], tok::less, TT_TemplateOpener); 530 EXPECT_TOKEN(Tokens[18], tok::less, TT_TemplateOpener); 531 EXPECT_TOKEN(Tokens[20], tok::greater, TT_TemplateCloser); 532 EXPECT_TOKEN(Tokens[25], tok::less, TT_TemplateOpener); 533 EXPECT_TOKEN(Tokens[27], tok::greater, TT_TemplateCloser); 534 EXPECT_TOKEN(Tokens[28], tok::greater, TT_TemplateCloser); 535 536 Tokens = annotate("auto bar() -> int requires(is_integral_v<T>) {}"); 537 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 538 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresClause); 539 540 Tokens = annotate("auto bar() -> void requires(is_integral_v<T>) {}"); 541 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 542 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresClause); 543 544 Tokens = annotate("auto bar() -> MyType requires(is_integral_v<T>) {}"); 545 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 546 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresClause); 547 548 Tokens = 549 annotate("auto bar() -> SOME_MACRO_TYPE requires(is_integral_v<T>) {}"); 550 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 551 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresClause); 552 553 Tokens = 554 annotate("auto bar() -> qualified::type requires(is_integral_v<T>) {}"); 555 ASSERT_EQ(Tokens.size(), 18u) << Tokens; 556 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresClause); 557 558 Tokens = 559 annotate("auto bar() -> Template<type> requires(is_integral_v<T>) {}"); 560 ASSERT_EQ(Tokens.size(), 19u) << Tokens; 561 EXPECT_TOKEN(Tokens[9], tok::kw_requires, TT_RequiresClause); 562 } 563 564 TEST_F(TokenAnnotatorTest, UnderstandsRequiresExpressions) { 565 auto Tokens = annotate("bool b = requires(int i) { i + 5; };"); 566 ASSERT_EQ(Tokens.size(), 16u) << Tokens; 567 EXPECT_TOKEN(Tokens[3], tok::kw_requires, TT_RequiresExpression); 568 EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_RequiresExpressionLParen); 569 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 570 571 Tokens = annotate("if (requires(int i) { i + 5; }) return;"); 572 ASSERT_EQ(Tokens.size(), 17u) << Tokens; 573 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 574 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 575 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_RequiresExpressionLBrace); 576 577 Tokens = annotate("if (func() && requires(int i) { i + 5; }) return;"); 578 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 579 EXPECT_TOKEN(Tokens[6], tok::kw_requires, TT_RequiresExpression); 580 EXPECT_TOKEN(Tokens[7], tok::l_paren, TT_RequiresExpressionLParen); 581 EXPECT_TOKEN(Tokens[11], tok::l_brace, TT_RequiresExpressionLBrace); 582 583 Tokens = annotate("foo(requires(const T t) {});"); 584 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 585 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 586 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 587 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 588 589 Tokens = annotate("foo(requires(const int t) {});"); 590 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 591 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 592 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 593 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 594 595 Tokens = annotate("foo(requires(const T t) {});"); 596 ASSERT_EQ(Tokens.size(), 13u) << Tokens; 597 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 598 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 599 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_RequiresExpressionLBrace); 600 601 Tokens = annotate("foo(requires(int const* volatile t) {});"); 602 ASSERT_EQ(Tokens.size(), 15u) << Tokens; 603 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 604 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 605 EXPECT_TOKEN(Tokens[10], tok::l_brace, TT_RequiresExpressionLBrace); 606 607 Tokens = annotate("foo(requires(T const* volatile t) {});"); 608 ASSERT_EQ(Tokens.size(), 15u) << Tokens; 609 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 610 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 611 EXPECT_TOKEN(Tokens[10], tok::l_brace, TT_RequiresExpressionLBrace); 612 613 Tokens = 614 annotate("foo(requires(const typename Outer<T>::Inner * const t) {});"); 615 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 616 EXPECT_TOKEN(Tokens[2], tok::kw_requires, TT_RequiresExpression); 617 EXPECT_TOKEN(Tokens[3], tok::l_paren, TT_RequiresExpressionLParen); 618 EXPECT_TOKEN(Tokens[16], tok::l_brace, TT_RequiresExpressionLBrace); 619 620 Tokens = annotate("template <typename T>\n" 621 "concept C = requires(T T) {\n" 622 " requires Bar<T> && Foo<T>;\n" 623 "};"); 624 ASSERT_EQ(Tokens.size(), 28u) << Tokens; 625 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 626 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 627 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 628 EXPECT_TOKEN(Tokens[14], tok::kw_requires, 629 TT_RequiresClauseInARequiresExpression); 630 631 Tokens = annotate("template <typename T>\n" 632 "concept C = requires(T T) {\n" 633 " { t.func() } -> std::same_as<int>;" 634 " requires Bar<T> && Foo<T>;\n" 635 "};"); 636 ASSERT_EQ(Tokens.size(), 43u) << Tokens; 637 EXPECT_TOKEN(Tokens[8], tok::kw_requires, TT_RequiresExpression); 638 EXPECT_TOKEN(Tokens[9], tok::l_paren, TT_RequiresExpressionLParen); 639 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_RequiresExpressionLBrace); 640 EXPECT_TOKEN(Tokens[29], tok::kw_requires, 641 TT_RequiresClauseInARequiresExpression); 642 643 // Invalid Code, but we don't want to crash. See http://llvm.org/PR54350. 644 Tokens = annotate("bool r10 = requires (struct new_struct { int x; } s) { " 645 "requires true; };"); 646 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 647 EXPECT_TOKEN(Tokens[3], tok::kw_requires, TT_RequiresExpression); 648 EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_RequiresExpressionLParen); 649 EXPECT_TOKEN(Tokens[14], tok::l_brace, TT_RequiresExpressionLBrace); 650 } 651 652 TEST_F(TokenAnnotatorTest, RequiresDoesNotChangeParsingOfTheRest) { 653 const char *BaseCode = nullptr; 654 const char *ConstrainedCode = nullptr; 655 auto BaseTokenCount = 0u; 656 auto RequiresTokenCount = 0u; 657 auto PrefixTokenCount = 0u; 658 659 auto TestRequires = [&](int Line) { 660 const auto BaseTokens = annotate(BaseCode); 661 const auto ConstrainedTokens = annotate(ConstrainedCode); 662 663 #define LINE " (Line " << Line << ')' 664 665 ASSERT_EQ(BaseTokens.size(), BaseTokenCount) << BaseTokens << LINE; 666 ASSERT_EQ(ConstrainedTokens.size(), BaseTokenCount + RequiresTokenCount) 667 << LINE; 668 669 for (auto I = 0u; I < BaseTokenCount; ++I) { 670 EXPECT_EQ( 671 *BaseTokens[I], 672 *ConstrainedTokens[I < PrefixTokenCount ? I : I + RequiresTokenCount]) 673 << I << LINE; 674 } 675 676 #undef LINE 677 }; 678 679 BaseCode = "template<typename T>\n" 680 "T Pi = 3.14;"; 681 ConstrainedCode = "template<typename T>\n" 682 " requires Foo<T>\n" 683 "T Pi = 3.14;"; 684 BaseTokenCount = 11; 685 RequiresTokenCount = 5; 686 PrefixTokenCount = 5; 687 TestRequires(__LINE__); 688 689 BaseCode = "template<typename T>\n" 690 "struct Bar;"; 691 ConstrainedCode = "template<typename T>\n" 692 " requires Foo<T>\n" 693 "struct Bar;"; 694 BaseTokenCount = 9; 695 TestRequires(__LINE__); 696 697 BaseCode = "template<typename T>\n" 698 "struct Bar {\n" 699 " T foo();\n" 700 " T bar();\n" 701 "};"; 702 ConstrainedCode = "template<typename T>\n" 703 " requires Foo<T>\n" 704 "struct Bar {\n" 705 " T foo();\n" 706 " T bar();\n" 707 "};"; 708 BaseTokenCount = 21; 709 TestRequires(__LINE__); 710 711 BaseCode = "template<typename T>\n" 712 "Bar(T) -> Bar<T>;"; 713 ConstrainedCode = "template<typename T>\n" 714 " requires Foo<T>\n" 715 "Bar(T) -> Bar<T>;"; 716 BaseTokenCount = 16; 717 TestRequires(__LINE__); 718 719 BaseCode = "template<typename T>\n" 720 "T foo();"; 721 ConstrainedCode = "template<typename T>\n" 722 " requires Foo<T>\n" 723 "T foo();"; 724 BaseTokenCount = 11; 725 TestRequires(__LINE__); 726 727 BaseCode = "template<typename T>\n" 728 "T foo() {\n" 729 " auto bar = baz();\n" 730 " return bar + T{};\n" 731 "}"; 732 ConstrainedCode = "template<typename T>\n" 733 " requires Foo<T>\n" 734 "T foo() {\n" 735 " auto bar = baz();\n" 736 " return bar + T{};\n" 737 "}"; 738 BaseTokenCount = 26; 739 TestRequires(__LINE__); 740 741 BaseCode = "template<typename T>\n" 742 "T foo();"; 743 ConstrainedCode = "template<typename T>\n" 744 "T foo() requires Foo<T>;"; 745 BaseTokenCount = 11; 746 PrefixTokenCount = 9; 747 TestRequires(__LINE__); 748 749 BaseCode = "template<typename T>\n" 750 "T foo() {\n" 751 " auto bar = baz();\n" 752 " return bar + T{};\n" 753 "}"; 754 ConstrainedCode = "template<typename T>\n" 755 "T foo() requires Foo<T> {\n" 756 " auto bar = baz();\n" 757 " return bar + T{};\n" 758 "}"; 759 BaseTokenCount = 26; 760 TestRequires(__LINE__); 761 762 BaseCode = "template<typename T>\n" 763 "T foo();"; 764 ConstrainedCode = "template<typename T>\n" 765 " requires(Foo<T>)\n" 766 "T foo();"; 767 BaseTokenCount = 11; 768 RequiresTokenCount = 7; 769 PrefixTokenCount = 5; 770 TestRequires(__LINE__); 771 772 BaseCode = "template<typename T>\n" 773 "Bar(T) -> Bar<typename T::I>;"; 774 ConstrainedCode = "template<typename T>\n" 775 " requires requires(T &&t) {\n" 776 " typename T::I;\n" 777 " }\n" 778 "Bar(T) -> Bar<typename T::I>;"; 779 BaseTokenCount = 19; 780 RequiresTokenCount = 14; 781 PrefixTokenCount = 5; 782 TestRequires(__LINE__); 783 784 BaseCode = "struct [[nodiscard]] zero_t {\n" 785 " template<class T>\n" 786 " [[nodiscard]] constexpr operator T() const { return v<T>; }\n" 787 "};"; 788 ConstrainedCode = 789 "struct [[nodiscard]] zero_t {\n" 790 " template<class T>\n" 791 " requires requires { v<T>; }\n" 792 " [[nodiscard]] constexpr operator T() const { return v<T>; }\n" 793 "};"; 794 BaseTokenCount = 35; 795 RequiresTokenCount = 9; 796 PrefixTokenCount = 13; 797 TestRequires(__LINE__); 798 799 BaseCode = "constexpr Foo(Foo const &other)\n" 800 " : value{other.value} {\n" 801 " do_magic();\n" 802 " do_more_magic();\n" 803 "}"; 804 ConstrainedCode = "constexpr Foo(Foo const &other)\n" 805 " requires std::is_copy_constructible<T>\n" 806 " : value{other.value} {\n" 807 " do_magic();\n" 808 " do_more_magic();\n" 809 "}"; 810 BaseTokenCount = 26; 811 RequiresTokenCount = 7; 812 PrefixTokenCount = 8; 813 TestRequires(__LINE__); 814 815 BaseCode = "constexpr Foo(Foo const &other)\n" 816 " : value{other.value} {\n" 817 " do_magic();\n" 818 " do_more_magic();\n" 819 "}"; 820 ConstrainedCode = "constexpr Foo(Foo const &other)\n" 821 " requires (std::is_copy_constructible<T>)\n" 822 " : value{other.value} {\n" 823 " do_magic();\n" 824 " do_more_magic();\n" 825 "}"; 826 RequiresTokenCount = 9; 827 TestRequires(__LINE__); 828 } 829 830 TEST_F(TokenAnnotatorTest, UnderstandsAsm) { 831 auto Tokens = annotate("__asm{\n" 832 "a:\n" 833 "};"); 834 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 835 EXPECT_TOKEN(Tokens[0], tok::kw_asm, TT_Unknown); 836 EXPECT_TOKEN(Tokens[1], tok::l_brace, TT_InlineASMBrace); 837 EXPECT_TOKEN(Tokens[4], tok::r_brace, TT_InlineASMBrace); 838 } 839 840 TEST_F(TokenAnnotatorTest, UnderstandsObjCBlock) { 841 auto Tokens = annotate("int (^)() = ^ ()\n" 842 " external_source_symbol() { //\n" 843 " return 1;\n" 844 "};"); 845 ASSERT_EQ(Tokens.size(), 21u) << Tokens; 846 EXPECT_TOKEN(Tokens[1], tok::l_paren, TT_ObjCBlockLParen); 847 EXPECT_TOKEN(Tokens[13], tok::l_brace, TT_ObjCBlockLBrace); 848 849 Tokens = annotate("int *p = ^int*(){ //\n" 850 " return nullptr;\n" 851 "}();"); 852 ASSERT_EQ(Tokens.size(), 19u) << Tokens; 853 EXPECT_TOKEN(Tokens[9], tok::l_brace, TT_ObjCBlockLBrace); 854 } 855 856 TEST_F(TokenAnnotatorTest, UnderstandsLambdas) { 857 auto Tokens = annotate("[]() constexpr {}"); 858 ASSERT_EQ(Tokens.size(), 8u) << Tokens; 859 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 860 EXPECT_TOKEN(Tokens[5], tok::l_brace, TT_LambdaLBrace); 861 862 Tokens = annotate("[]() consteval {}"); 863 ASSERT_EQ(Tokens.size(), 8u) << Tokens; 864 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 865 EXPECT_TOKEN(Tokens[5], tok::l_brace, TT_LambdaLBrace); 866 867 Tokens = annotate("[]() mutable {}"); 868 ASSERT_EQ(Tokens.size(), 8u) << Tokens; 869 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 870 EXPECT_TOKEN(Tokens[5], tok::l_brace, TT_LambdaLBrace); 871 872 Tokens = annotate("[]() static {}"); 873 ASSERT_EQ(Tokens.size(), 8u) << Tokens; 874 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 875 EXPECT_TOKEN(Tokens[5], tok::l_brace, TT_LambdaLBrace); 876 877 Tokens = annotate("[]() -> auto {}"); 878 ASSERT_EQ(Tokens.size(), 9u) << Tokens; 879 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 880 EXPECT_TOKEN(Tokens[4], tok::arrow, TT_LambdaArrow); 881 EXPECT_TOKEN(Tokens[6], tok::l_brace, TT_LambdaLBrace); 882 883 Tokens = annotate("[]() -> auto & {}"); 884 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 885 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 886 EXPECT_TOKEN(Tokens[4], tok::arrow, TT_LambdaArrow); 887 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_LambdaLBrace); 888 889 Tokens = annotate("[]() -> auto * {}"); 890 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 891 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 892 EXPECT_TOKEN(Tokens[4], tok::arrow, TT_LambdaArrow); 893 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_LambdaLBrace); 894 895 Tokens = annotate("[] {}"); 896 ASSERT_EQ(Tokens.size(), 5u) << Tokens; 897 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 898 EXPECT_TOKEN(Tokens[2], tok::l_brace, TT_LambdaLBrace); 899 900 Tokens = annotate("[] noexcept {}"); 901 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 902 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 903 EXPECT_TOKEN(Tokens[3], tok::l_brace, TT_LambdaLBrace); 904 905 Tokens = annotate("[] -> auto {}"); 906 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 907 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 908 EXPECT_TOKEN(Tokens[2], tok::arrow, TT_LambdaArrow); 909 EXPECT_TOKEN(Tokens[4], tok::l_brace, TT_LambdaLBrace); 910 911 Tokens = annotate("[] <typename T> () {}"); 912 ASSERT_EQ(Tokens.size(), 11u) << Tokens; 913 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 914 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 915 EXPECT_TOKEN(Tokens[8], tok::l_brace, TT_LambdaLBrace); 916 917 Tokens = annotate("[] <typename T> {}"); 918 ASSERT_EQ(Tokens.size(), 9u) << Tokens; 919 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 920 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 921 EXPECT_TOKEN(Tokens[6], tok::l_brace, TT_LambdaLBrace); 922 923 Tokens = annotate("[] <typename... T> () {}"); 924 ASSERT_EQ(Tokens.size(), 12u) << Tokens; 925 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 926 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 927 EXPECT_TOKEN(Tokens[9], tok::l_brace, TT_LambdaLBrace); 928 929 Tokens = annotate("[] <typename... T> {}"); 930 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 931 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 932 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 933 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_LambdaLBrace); 934 935 Tokens = annotate("[] <int... T> () {}"); 936 ASSERT_EQ(Tokens.size(), 12u) << Tokens; 937 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 938 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 939 EXPECT_TOKEN(Tokens[9], tok::l_brace, TT_LambdaLBrace); 940 941 Tokens = annotate("[] <int... T> {}"); 942 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 943 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 944 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 945 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_LambdaLBrace); 946 947 Tokens = annotate("[] <Foo... T> () {}"); 948 ASSERT_EQ(Tokens.size(), 12u) << Tokens; 949 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 950 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 951 EXPECT_TOKEN(Tokens[9], tok::l_brace, TT_LambdaLBrace); 952 953 Tokens = annotate("[] <Foo... T> {}"); 954 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 955 EXPECT_TOKEN(Tokens[0], tok::l_square, TT_LambdaLSquare); 956 EXPECT_TOKEN(Tokens[2], tok::less, TT_TemplateOpener); 957 EXPECT_TOKEN(Tokens[7], tok::l_brace, TT_LambdaLBrace); 958 } 959 960 TEST_F(TokenAnnotatorTest, UnderstandsFunctionAnnotations) { 961 auto Tokens = annotate("template <typename T>\n" 962 "DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" 963 "string OldFunction(const string ¶meter) {}"); 964 ASSERT_EQ(Tokens.size(), 20u) << Tokens; 965 EXPECT_TOKEN(Tokens[8], tok::r_paren, TT_FunctionAnnotationRParen); 966 967 Tokens = annotate("template <typename T>\n" 968 "A(T) noexcept;"); 969 ASSERT_EQ(Tokens.size(), 12u) << Tokens; 970 EXPECT_TOKEN(Tokens[8], tok::r_paren, TT_Unknown); 971 } 972 973 TEST_F(TokenAnnotatorTest, UnderstandsVerilogOperators) { 974 auto Annotate = [this](llvm::StringRef Code) { 975 return annotate(Code, getLLVMStyle(FormatStyle::LK_Verilog)); 976 }; 977 // Test that unary operators get labeled as such and that operators like '++' 978 // don't get split. 979 tok::TokenKind Unary[] = {tok::plus, tok::minus, tok::exclaim, 980 tok::tilde, tok::amp, tok::pipe, 981 tok::caret, tok::plusplus, tok::minusminus}; 982 for (auto Kind : Unary) { 983 auto Tokens = 984 Annotate(std::string("x = ") + tok::getPunctuatorSpelling(Kind) + "x;"); 985 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 986 EXPECT_TOKEN(Tokens[2], Kind, TT_UnaryOperator); 987 } 988 // Operators formed by joining two operators like '^~'. For some of these 989 // joined operators, we don't have a separate type, so we only test for their 990 // precedence. 991 std::pair<prec::Level, std::string> JoinedBinary[] = { 992 {prec::Comma, "<->"}, {prec::Assignment, "+="}, 993 {prec::Assignment, "-="}, {prec::Assignment, "*="}, 994 {prec::Assignment, "/="}, {prec::Assignment, "%="}, 995 {prec::Assignment, "&="}, {prec::Assignment, "^="}, 996 {prec::Assignment, "<<="}, {prec::Assignment, ">>="}, 997 {prec::Assignment, "<<<="}, {prec::Assignment, ">>>="}, 998 {prec::LogicalOr, "||"}, {prec::LogicalAnd, "&&"}, 999 {prec::Equality, "=="}, {prec::Equality, "!="}, 1000 {prec::Equality, "==="}, {prec::Equality, "!=="}, 1001 {prec::Equality, "==?"}, {prec::Equality, "!=?"}, 1002 {prec::ExclusiveOr, "~^"}, {prec::ExclusiveOr, "^~"}, 1003 }; 1004 for (auto Operator : JoinedBinary) { 1005 auto Tokens = Annotate(std::string("x = x ") + Operator.second + " x;"); 1006 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 1007 EXPECT_TOKEN_TYPE(Tokens[3], TT_BinaryOperator); 1008 EXPECT_TOKEN_PRECEDENCE(Tokens[3], Operator.first); 1009 } 1010 // '~^' and '^~' can be unary as well as binary operators. 1011 auto Tokens = Annotate("x = ~^x;"); 1012 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 1013 EXPECT_TOKEN_TYPE(Tokens[2], TT_UnaryOperator); 1014 Tokens = Annotate("x = ^~x;"); 1015 ASSERT_EQ(Tokens.size(), 6u) << Tokens; 1016 EXPECT_TOKEN_TYPE(Tokens[2], TT_UnaryOperator); 1017 // The unary operators '~&' and '~|' can only be unary operators. The current 1018 // implementation treats each of them as separate unary '~' and '&' or '|' 1019 // operators, which is enough for formatting purposes. In FormatTestVerilog, 1020 // there is a test that there is no space in between. And even if a new line 1021 // is inserted between the '~' and '|', the semantic meaning is the same as 1022 // the joined operator, so the CanBreakBefore property doesn't need to be 1023 // false for the second operator. 1024 Tokens = Annotate("x = ~&x;"); 1025 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 1026 EXPECT_TOKEN(Tokens[2], tok::tilde, TT_UnaryOperator); 1027 EXPECT_TOKEN(Tokens[3], tok::amp, TT_UnaryOperator); 1028 Tokens = Annotate("x = ~|x;"); 1029 ASSERT_EQ(Tokens.size(), 7u) << Tokens; 1030 EXPECT_TOKEN(Tokens[2], tok::tilde, TT_UnaryOperator); 1031 EXPECT_TOKEN(Tokens[3], tok::pipe, TT_UnaryOperator); 1032 // Test for block label colons. 1033 Tokens = Annotate("begin : x\n" 1034 "end : x"); 1035 ASSERT_EQ(Tokens.size(), 7u); 1036 EXPECT_TOKEN(Tokens[1], tok::colon, TT_VerilogBlockLabelColon); 1037 EXPECT_TOKEN(Tokens[4], tok::colon, TT_VerilogBlockLabelColon); 1038 // Test that the dimension colon is annotated correctly. 1039 Tokens = Annotate("var [1 : 0] x;"); 1040 ASSERT_EQ(Tokens.size(), 9u) << Tokens; 1041 EXPECT_TOKEN(Tokens[3], tok::colon, TT_BitFieldColon); 1042 Tokens = Annotate("extern function [1 : 0] x;"); 1043 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 1044 EXPECT_TOKEN(Tokens[4], tok::colon, TT_BitFieldColon); 1045 // Test case labels and ternary operators. 1046 Tokens = Annotate("case (x)\n" 1047 " x:\n" 1048 " x;\n" 1049 "endcase\n"); 1050 ASSERT_EQ(Tokens.size(), 10u) << Tokens; 1051 EXPECT_TOKEN(Tokens[5], tok::colon, TT_GotoLabelColon); 1052 Tokens = Annotate("case (x)\n" 1053 " x ? x : x:\n" 1054 " x;\n" 1055 "endcase\n"); 1056 ASSERT_EQ(Tokens.size(), 14u) << Tokens; 1057 EXPECT_TOKEN(Tokens[5], tok::question, TT_ConditionalExpr); 1058 EXPECT_TOKEN(Tokens[7], tok::colon, TT_ConditionalExpr); 1059 EXPECT_TOKEN(Tokens[9], tok::colon, TT_GotoLabelColon); 1060 } 1061 1062 } // namespace 1063 } // namespace format 1064 } // namespace clang 1065