| File: | build/source/clang/lib/Sema/SemaLambda.cpp |
| Warning: | line 1293, column 26 1st function call argument is an uninitialized value |
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| 1 | //===--- SemaLambda.cpp - Semantic Analysis for C++11 Lambdas -------------===// | |||
| 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 | // This file implements semantic analysis for C++ lambda expressions. | |||
| 10 | // | |||
| 11 | //===----------------------------------------------------------------------===// | |||
| 12 | #include "clang/Sema/DeclSpec.h" | |||
| 13 | #include "TypeLocBuilder.h" | |||
| 14 | #include "clang/AST/ASTLambda.h" | |||
| 15 | #include "clang/AST/ExprCXX.h" | |||
| 16 | #include "clang/Basic/TargetInfo.h" | |||
| 17 | #include "clang/Sema/Initialization.h" | |||
| 18 | #include "clang/Sema/Lookup.h" | |||
| 19 | #include "clang/Sema/Scope.h" | |||
| 20 | #include "clang/Sema/ScopeInfo.h" | |||
| 21 | #include "clang/Sema/SemaInternal.h" | |||
| 22 | #include "clang/Sema/SemaLambda.h" | |||
| 23 | #include "llvm/ADT/STLExtras.h" | |||
| 24 | #include <optional> | |||
| 25 | using namespace clang; | |||
| 26 | using namespace sema; | |||
| 27 | ||||
| 28 | /// Examines the FunctionScopeInfo stack to determine the nearest | |||
| 29 | /// enclosing lambda (to the current lambda) that is 'capture-ready' for | |||
| 30 | /// the variable referenced in the current lambda (i.e. \p VarToCapture). | |||
| 31 | /// If successful, returns the index into Sema's FunctionScopeInfo stack | |||
| 32 | /// of the capture-ready lambda's LambdaScopeInfo. | |||
| 33 | /// | |||
| 34 | /// Climbs down the stack of lambdas (deepest nested lambda - i.e. current | |||
| 35 | /// lambda - is on top) to determine the index of the nearest enclosing/outer | |||
| 36 | /// lambda that is ready to capture the \p VarToCapture being referenced in | |||
| 37 | /// the current lambda. | |||
| 38 | /// As we climb down the stack, we want the index of the first such lambda - | |||
| 39 | /// that is the lambda with the highest index that is 'capture-ready'. | |||
| 40 | /// | |||
| 41 | /// A lambda 'L' is capture-ready for 'V' (var or this) if: | |||
| 42 | /// - its enclosing context is non-dependent | |||
| 43 | /// - and if the chain of lambdas between L and the lambda in which | |||
| 44 | /// V is potentially used (i.e. the lambda at the top of the scope info | |||
| 45 | /// stack), can all capture or have already captured V. | |||
| 46 | /// If \p VarToCapture is 'null' then we are trying to capture 'this'. | |||
| 47 | /// | |||
| 48 | /// Note that a lambda that is deemed 'capture-ready' still needs to be checked | |||
| 49 | /// for whether it is 'capture-capable' (see | |||
| 50 | /// getStackIndexOfNearestEnclosingCaptureCapableLambda), before it can truly | |||
| 51 | /// capture. | |||
| 52 | /// | |||
| 53 | /// \param FunctionScopes - Sema's stack of nested FunctionScopeInfo's (which a | |||
| 54 | /// LambdaScopeInfo inherits from). The current/deepest/innermost lambda | |||
| 55 | /// is at the top of the stack and has the highest index. | |||
| 56 | /// \param VarToCapture - the variable to capture. If NULL, capture 'this'. | |||
| 57 | /// | |||
| 58 | /// \returns An std::optional<unsigned> Index that if evaluates to 'true' | |||
| 59 | /// contains the index (into Sema's FunctionScopeInfo stack) of the innermost | |||
| 60 | /// lambda which is capture-ready. If the return value evaluates to 'false' | |||
| 61 | /// then no lambda is capture-ready for \p VarToCapture. | |||
| 62 | ||||
| 63 | static inline std::optional<unsigned> | |||
| 64 | getStackIndexOfNearestEnclosingCaptureReadyLambda( | |||
| 65 | ArrayRef<const clang::sema::FunctionScopeInfo *> FunctionScopes, | |||
| 66 | ValueDecl *VarToCapture) { | |||
| 67 | // Label failure to capture. | |||
| 68 | const std::optional<unsigned> NoLambdaIsCaptureReady; | |||
| 69 | ||||
| 70 | // Ignore all inner captured regions. | |||
| 71 | unsigned CurScopeIndex = FunctionScopes.size() - 1; | |||
| 72 | while (CurScopeIndex > 0 && isa<clang::sema::CapturedRegionScopeInfo>( | |||
| 73 | FunctionScopes[CurScopeIndex])) | |||
| 74 | --CurScopeIndex; | |||
| 75 | assert((static_cast <bool> (isa<clang::sema::LambdaScopeInfo >(FunctionScopes[CurScopeIndex]) && "The function on the top of sema's function-info stack must be a lambda" ) ? void (0) : __assert_fail ("isa<clang::sema::LambdaScopeInfo>(FunctionScopes[CurScopeIndex]) && \"The function on the top of sema's function-info stack must be a lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 77, __extension__ __PRETTY_FUNCTION__ )) | |||
| 76 | isa<clang::sema::LambdaScopeInfo>(FunctionScopes[CurScopeIndex]) &&(static_cast <bool> (isa<clang::sema::LambdaScopeInfo >(FunctionScopes[CurScopeIndex]) && "The function on the top of sema's function-info stack must be a lambda" ) ? void (0) : __assert_fail ("isa<clang::sema::LambdaScopeInfo>(FunctionScopes[CurScopeIndex]) && \"The function on the top of sema's function-info stack must be a lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 77, __extension__ __PRETTY_FUNCTION__ )) | |||
| 77 | "The function on the top of sema's function-info stack must be a lambda")(static_cast <bool> (isa<clang::sema::LambdaScopeInfo >(FunctionScopes[CurScopeIndex]) && "The function on the top of sema's function-info stack must be a lambda" ) ? void (0) : __assert_fail ("isa<clang::sema::LambdaScopeInfo>(FunctionScopes[CurScopeIndex]) && \"The function on the top of sema's function-info stack must be a lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 77, __extension__ __PRETTY_FUNCTION__ )); | |||
| 78 | ||||
| 79 | // If VarToCapture is null, we are attempting to capture 'this'. | |||
| 80 | const bool IsCapturingThis = !VarToCapture; | |||
| 81 | const bool IsCapturingVariable = !IsCapturingThis; | |||
| 82 | ||||
| 83 | // Start with the current lambda at the top of the stack (highest index). | |||
| 84 | DeclContext *EnclosingDC = | |||
| 85 | cast<sema::LambdaScopeInfo>(FunctionScopes[CurScopeIndex])->CallOperator; | |||
| 86 | ||||
| 87 | do { | |||
| 88 | const clang::sema::LambdaScopeInfo *LSI = | |||
| 89 | cast<sema::LambdaScopeInfo>(FunctionScopes[CurScopeIndex]); | |||
| 90 | // IF we have climbed down to an intervening enclosing lambda that contains | |||
| 91 | // the variable declaration - it obviously can/must not capture the | |||
| 92 | // variable. | |||
| 93 | // Since its enclosing DC is dependent, all the lambdas between it and the | |||
| 94 | // innermost nested lambda are dependent (otherwise we wouldn't have | |||
| 95 | // arrived here) - so we don't yet have a lambda that can capture the | |||
| 96 | // variable. | |||
| 97 | if (IsCapturingVariable && | |||
| 98 | VarToCapture->getDeclContext()->Equals(EnclosingDC)) | |||
| 99 | return NoLambdaIsCaptureReady; | |||
| 100 | ||||
| 101 | // For an enclosing lambda to be capture ready for an entity, all | |||
| 102 | // intervening lambda's have to be able to capture that entity. If even | |||
| 103 | // one of the intervening lambda's is not capable of capturing the entity | |||
| 104 | // then no enclosing lambda can ever capture that entity. | |||
| 105 | // For e.g. | |||
| 106 | // const int x = 10; | |||
| 107 | // [=](auto a) { #1 | |||
| 108 | // [](auto b) { #2 <-- an intervening lambda that can never capture 'x' | |||
| 109 | // [=](auto c) { #3 | |||
| 110 | // f(x, c); <-- can not lead to x's speculative capture by #1 or #2 | |||
| 111 | // }; }; }; | |||
| 112 | // If they do not have a default implicit capture, check to see | |||
| 113 | // if the entity has already been explicitly captured. | |||
| 114 | // If even a single dependent enclosing lambda lacks the capability | |||
| 115 | // to ever capture this variable, there is no further enclosing | |||
| 116 | // non-dependent lambda that can capture this variable. | |||
| 117 | if (LSI->ImpCaptureStyle == sema::LambdaScopeInfo::ImpCap_None) { | |||
| 118 | if (IsCapturingVariable && !LSI->isCaptured(VarToCapture)) | |||
| 119 | return NoLambdaIsCaptureReady; | |||
| 120 | if (IsCapturingThis && !LSI->isCXXThisCaptured()) | |||
| 121 | return NoLambdaIsCaptureReady; | |||
| 122 | } | |||
| 123 | EnclosingDC = getLambdaAwareParentOfDeclContext(EnclosingDC); | |||
| 124 | ||||
| 125 | assert(CurScopeIndex)(static_cast <bool> (CurScopeIndex) ? void (0) : __assert_fail ("CurScopeIndex", "clang/lib/Sema/SemaLambda.cpp", 125, __extension__ __PRETTY_FUNCTION__)); | |||
| 126 | --CurScopeIndex; | |||
| 127 | } while (!EnclosingDC->isTranslationUnit() && | |||
| 128 | EnclosingDC->isDependentContext() && | |||
| 129 | isLambdaCallOperator(EnclosingDC)); | |||
| 130 | ||||
| 131 | assert(CurScopeIndex < (FunctionScopes.size() - 1))(static_cast <bool> (CurScopeIndex < (FunctionScopes .size() - 1)) ? void (0) : __assert_fail ("CurScopeIndex < (FunctionScopes.size() - 1)" , "clang/lib/Sema/SemaLambda.cpp", 131, __extension__ __PRETTY_FUNCTION__ )); | |||
| 132 | // If the enclosingDC is not dependent, then the immediately nested lambda | |||
| 133 | // (one index above) is capture-ready. | |||
| 134 | if (!EnclosingDC->isDependentContext()) | |||
| 135 | return CurScopeIndex + 1; | |||
| 136 | return NoLambdaIsCaptureReady; | |||
| 137 | } | |||
| 138 | ||||
| 139 | /// Examines the FunctionScopeInfo stack to determine the nearest | |||
| 140 | /// enclosing lambda (to the current lambda) that is 'capture-capable' for | |||
| 141 | /// the variable referenced in the current lambda (i.e. \p VarToCapture). | |||
| 142 | /// If successful, returns the index into Sema's FunctionScopeInfo stack | |||
| 143 | /// of the capture-capable lambda's LambdaScopeInfo. | |||
| 144 | /// | |||
| 145 | /// Given the current stack of lambdas being processed by Sema and | |||
| 146 | /// the variable of interest, to identify the nearest enclosing lambda (to the | |||
| 147 | /// current lambda at the top of the stack) that can truly capture | |||
| 148 | /// a variable, it has to have the following two properties: | |||
| 149 | /// a) 'capture-ready' - be the innermost lambda that is 'capture-ready': | |||
| 150 | /// - climb down the stack (i.e. starting from the innermost and examining | |||
| 151 | /// each outer lambda step by step) checking if each enclosing | |||
| 152 | /// lambda can either implicitly or explicitly capture the variable. | |||
| 153 | /// Record the first such lambda that is enclosed in a non-dependent | |||
| 154 | /// context. If no such lambda currently exists return failure. | |||
| 155 | /// b) 'capture-capable' - make sure the 'capture-ready' lambda can truly | |||
| 156 | /// capture the variable by checking all its enclosing lambdas: | |||
| 157 | /// - check if all outer lambdas enclosing the 'capture-ready' lambda | |||
| 158 | /// identified above in 'a' can also capture the variable (this is done | |||
| 159 | /// via tryCaptureVariable for variables and CheckCXXThisCapture for | |||
| 160 | /// 'this' by passing in the index of the Lambda identified in step 'a') | |||
| 161 | /// | |||
| 162 | /// \param FunctionScopes - Sema's stack of nested FunctionScopeInfo's (which a | |||
| 163 | /// LambdaScopeInfo inherits from). The current/deepest/innermost lambda | |||
| 164 | /// is at the top of the stack. | |||
| 165 | /// | |||
| 166 | /// \param VarToCapture - the variable to capture. If NULL, capture 'this'. | |||
| 167 | /// | |||
| 168 | /// | |||
| 169 | /// \returns An std::optional<unsigned> Index that if evaluates to 'true' | |||
| 170 | /// contains the index (into Sema's FunctionScopeInfo stack) of the innermost | |||
| 171 | /// lambda which is capture-capable. If the return value evaluates to 'false' | |||
| 172 | /// then no lambda is capture-capable for \p VarToCapture. | |||
| 173 | ||||
| 174 | std::optional<unsigned> | |||
| 175 | clang::getStackIndexOfNearestEnclosingCaptureCapableLambda( | |||
| 176 | ArrayRef<const sema::FunctionScopeInfo *> FunctionScopes, | |||
| 177 | ValueDecl *VarToCapture, Sema &S) { | |||
| 178 | ||||
| 179 | const std::optional<unsigned> NoLambdaIsCaptureCapable; | |||
| 180 | ||||
| 181 | const std::optional<unsigned> OptionalStackIndex = | |||
| 182 | getStackIndexOfNearestEnclosingCaptureReadyLambda(FunctionScopes, | |||
| 183 | VarToCapture); | |||
| 184 | if (!OptionalStackIndex) | |||
| 185 | return NoLambdaIsCaptureCapable; | |||
| 186 | ||||
| 187 | const unsigned IndexOfCaptureReadyLambda = *OptionalStackIndex; | |||
| 188 | assert(((IndexOfCaptureReadyLambda != (FunctionScopes.size() - 1)) ||(static_cast <bool> (((IndexOfCaptureReadyLambda != (FunctionScopes .size() - 1)) || S.getCurGenericLambda()) && "The capture ready lambda for a potential capture can only be the " "current lambda if it is a generic lambda") ? void (0) : __assert_fail ("((IndexOfCaptureReadyLambda != (FunctionScopes.size() - 1)) || S.getCurGenericLambda()) && \"The capture ready lambda for a potential capture can only be the \" \"current lambda if it is a generic lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 191, __extension__ __PRETTY_FUNCTION__ )) | |||
| 189 | S.getCurGenericLambda()) &&(static_cast <bool> (((IndexOfCaptureReadyLambda != (FunctionScopes .size() - 1)) || S.getCurGenericLambda()) && "The capture ready lambda for a potential capture can only be the " "current lambda if it is a generic lambda") ? void (0) : __assert_fail ("((IndexOfCaptureReadyLambda != (FunctionScopes.size() - 1)) || S.getCurGenericLambda()) && \"The capture ready lambda for a potential capture can only be the \" \"current lambda if it is a generic lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 191, __extension__ __PRETTY_FUNCTION__ )) | |||
| 190 | "The capture ready lambda for a potential capture can only be the "(static_cast <bool> (((IndexOfCaptureReadyLambda != (FunctionScopes .size() - 1)) || S.getCurGenericLambda()) && "The capture ready lambda for a potential capture can only be the " "current lambda if it is a generic lambda") ? void (0) : __assert_fail ("((IndexOfCaptureReadyLambda != (FunctionScopes.size() - 1)) || S.getCurGenericLambda()) && \"The capture ready lambda for a potential capture can only be the \" \"current lambda if it is a generic lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 191, __extension__ __PRETTY_FUNCTION__ )) | |||
| 191 | "current lambda if it is a generic lambda")(static_cast <bool> (((IndexOfCaptureReadyLambda != (FunctionScopes .size() - 1)) || S.getCurGenericLambda()) && "The capture ready lambda for a potential capture can only be the " "current lambda if it is a generic lambda") ? void (0) : __assert_fail ("((IndexOfCaptureReadyLambda != (FunctionScopes.size() - 1)) || S.getCurGenericLambda()) && \"The capture ready lambda for a potential capture can only be the \" \"current lambda if it is a generic lambda\"" , "clang/lib/Sema/SemaLambda.cpp", 191, __extension__ __PRETTY_FUNCTION__ )); | |||
| 192 | ||||
| 193 | const sema::LambdaScopeInfo *const CaptureReadyLambdaLSI = | |||
| 194 | cast<sema::LambdaScopeInfo>(FunctionScopes[IndexOfCaptureReadyLambda]); | |||
| 195 | ||||
| 196 | // If VarToCapture is null, we are attempting to capture 'this' | |||
| 197 | const bool IsCapturingThis = !VarToCapture; | |||
| 198 | const bool IsCapturingVariable = !IsCapturingThis; | |||
| 199 | ||||
| 200 | if (IsCapturingVariable) { | |||
| 201 | // Check if the capture-ready lambda can truly capture the variable, by | |||
| 202 | // checking whether all enclosing lambdas of the capture-ready lambda allow | |||
| 203 | // the capture - i.e. make sure it is capture-capable. | |||
| 204 | QualType CaptureType, DeclRefType; | |||
| 205 | const bool CanCaptureVariable = | |||
| 206 | !S.tryCaptureVariable(VarToCapture, | |||
| 207 | /*ExprVarIsUsedInLoc*/ SourceLocation(), | |||
| 208 | clang::Sema::TryCapture_Implicit, | |||
| 209 | /*EllipsisLoc*/ SourceLocation(), | |||
| 210 | /*BuildAndDiagnose*/ false, CaptureType, | |||
| 211 | DeclRefType, &IndexOfCaptureReadyLambda); | |||
| 212 | if (!CanCaptureVariable) | |||
| 213 | return NoLambdaIsCaptureCapable; | |||
| 214 | } else { | |||
| 215 | // Check if the capture-ready lambda can truly capture 'this' by checking | |||
| 216 | // whether all enclosing lambdas of the capture-ready lambda can capture | |||
| 217 | // 'this'. | |||
| 218 | const bool CanCaptureThis = | |||
| 219 | !S.CheckCXXThisCapture( | |||
| 220 | CaptureReadyLambdaLSI->PotentialThisCaptureLocation, | |||
| 221 | /*Explicit*/ false, /*BuildAndDiagnose*/ false, | |||
| 222 | &IndexOfCaptureReadyLambda); | |||
| 223 | if (!CanCaptureThis) | |||
| 224 | return NoLambdaIsCaptureCapable; | |||
| 225 | } | |||
| 226 | return IndexOfCaptureReadyLambda; | |||
| 227 | } | |||
| 228 | ||||
| 229 | static inline TemplateParameterList * | |||
| 230 | getGenericLambdaTemplateParameterList(LambdaScopeInfo *LSI, Sema &SemaRef) { | |||
| 231 | if (!LSI->GLTemplateParameterList && !LSI->TemplateParams.empty()) { | |||
| 232 | LSI->GLTemplateParameterList = TemplateParameterList::Create( | |||
| 233 | SemaRef.Context, | |||
| 234 | /*Template kw loc*/ SourceLocation(), | |||
| 235 | /*L angle loc*/ LSI->ExplicitTemplateParamsRange.getBegin(), | |||
| 236 | LSI->TemplateParams, | |||
| 237 | /*R angle loc*/LSI->ExplicitTemplateParamsRange.getEnd(), | |||
| 238 | LSI->RequiresClause.get()); | |||
| 239 | } | |||
| 240 | return LSI->GLTemplateParameterList; | |||
| 241 | } | |||
| 242 | ||||
| 243 | CXXRecordDecl * | |||
| 244 | Sema::createLambdaClosureType(SourceRange IntroducerRange, TypeSourceInfo *Info, | |||
| 245 | unsigned LambdaDependencyKind, | |||
| 246 | LambdaCaptureDefault CaptureDefault) { | |||
| 247 | DeclContext *DC = CurContext; | |||
| 248 | while (!(DC->isFunctionOrMethod() || DC->isRecord() || DC->isFileContext())) | |||
| 249 | DC = DC->getParent(); | |||
| 250 | ||||
| 251 | bool IsGenericLambda = | |||
| 252 | Info && getGenericLambdaTemplateParameterList(getCurLambda(), *this); | |||
| 253 | // Start constructing the lambda class. | |||
| 254 | CXXRecordDecl *Class = CXXRecordDecl::CreateLambda( | |||
| 255 | Context, DC, Info, IntroducerRange.getBegin(), LambdaDependencyKind, | |||
| 256 | IsGenericLambda, CaptureDefault); | |||
| 257 | DC->addDecl(Class); | |||
| 258 | ||||
| 259 | return Class; | |||
| 260 | } | |||
| 261 | ||||
| 262 | /// Determine whether the given context is or is enclosed in an inline | |||
| 263 | /// function. | |||
| 264 | static bool isInInlineFunction(const DeclContext *DC) { | |||
| 265 | while (!DC->isFileContext()) { | |||
| 266 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(DC)) | |||
| 267 | if (FD->isInlined()) | |||
| 268 | return true; | |||
| 269 | ||||
| 270 | DC = DC->getLexicalParent(); | |||
| 271 | } | |||
| 272 | ||||
| 273 | return false; | |||
| 274 | } | |||
| 275 | ||||
| 276 | std::tuple<MangleNumberingContext *, Decl *> | |||
| 277 | Sema::getCurrentMangleNumberContext(const DeclContext *DC) { | |||
| 278 | // Compute the context for allocating mangling numbers in the current | |||
| 279 | // expression, if the ABI requires them. | |||
| 280 | Decl *ManglingContextDecl = ExprEvalContexts.back().ManglingContextDecl; | |||
| 281 | ||||
| 282 | enum ContextKind { | |||
| 283 | Normal, | |||
| 284 | DefaultArgument, | |||
| 285 | DataMember, | |||
| 286 | StaticDataMember, | |||
| 287 | InlineVariable, | |||
| 288 | VariableTemplate, | |||
| 289 | Concept | |||
| 290 | } Kind = Normal; | |||
| 291 | ||||
| 292 | // Default arguments of member function parameters that appear in a class | |||
| 293 | // definition, as well as the initializers of data members, receive special | |||
| 294 | // treatment. Identify them. | |||
| 295 | if (ManglingContextDecl) { | |||
| 296 | if (ParmVarDecl *Param = dyn_cast<ParmVarDecl>(ManglingContextDecl)) { | |||
| 297 | if (const DeclContext *LexicalDC | |||
| 298 | = Param->getDeclContext()->getLexicalParent()) | |||
| 299 | if (LexicalDC->isRecord()) | |||
| 300 | Kind = DefaultArgument; | |||
| 301 | } else if (VarDecl *Var = dyn_cast<VarDecl>(ManglingContextDecl)) { | |||
| 302 | if (Var->getDeclContext()->isRecord()) | |||
| 303 | Kind = StaticDataMember; | |||
| 304 | else if (Var->getMostRecentDecl()->isInline()) | |||
| 305 | Kind = InlineVariable; | |||
| 306 | else if (Var->getDescribedVarTemplate()) | |||
| 307 | Kind = VariableTemplate; | |||
| 308 | else if (auto *VTS = dyn_cast<VarTemplateSpecializationDecl>(Var)) { | |||
| 309 | if (!VTS->isExplicitSpecialization()) | |||
| 310 | Kind = VariableTemplate; | |||
| 311 | } | |||
| 312 | } else if (isa<FieldDecl>(ManglingContextDecl)) { | |||
| 313 | Kind = DataMember; | |||
| 314 | } else if (isa<ImplicitConceptSpecializationDecl>(ManglingContextDecl)) { | |||
| 315 | Kind = Concept; | |||
| 316 | } | |||
| 317 | } | |||
| 318 | ||||
| 319 | // Itanium ABI [5.1.7]: | |||
| 320 | // In the following contexts [...] the one-definition rule requires closure | |||
| 321 | // types in different translation units to "correspond": | |||
| 322 | bool IsInNonspecializedTemplate = | |||
| 323 | inTemplateInstantiation() || CurContext->isDependentContext(); | |||
| 324 | switch (Kind) { | |||
| 325 | case Normal: { | |||
| 326 | // -- the bodies of non-exported nonspecialized template functions | |||
| 327 | // -- the bodies of inline functions | |||
| 328 | if ((IsInNonspecializedTemplate && | |||
| 329 | !(ManglingContextDecl && isa<ParmVarDecl>(ManglingContextDecl))) || | |||
| 330 | isInInlineFunction(CurContext)) { | |||
| 331 | while (auto *CD = dyn_cast<CapturedDecl>(DC)) | |||
| 332 | DC = CD->getParent(); | |||
| 333 | return std::make_tuple(&Context.getManglingNumberContext(DC), nullptr); | |||
| 334 | } | |||
| 335 | ||||
| 336 | return std::make_tuple(nullptr, nullptr); | |||
| 337 | } | |||
| 338 | ||||
| 339 | case Concept: | |||
| 340 | // Concept definitions aren't code generated and thus aren't mangled, | |||
| 341 | // however the ManglingContextDecl is important for the purposes of | |||
| 342 | // re-forming the template argument list of the lambda for constraint | |||
| 343 | // evaluation. | |||
| 344 | case StaticDataMember: | |||
| 345 | // -- the initializers of nonspecialized static members of template classes | |||
| 346 | if (!IsInNonspecializedTemplate) | |||
| 347 | return std::make_tuple(nullptr, ManglingContextDecl); | |||
| 348 | // Fall through to get the current context. | |||
| 349 | [[fallthrough]]; | |||
| 350 | ||||
| 351 | case DataMember: | |||
| 352 | // -- the in-class initializers of class members | |||
| 353 | case DefaultArgument: | |||
| 354 | // -- default arguments appearing in class definitions | |||
| 355 | case InlineVariable: | |||
| 356 | // -- the initializers of inline variables | |||
| 357 | case VariableTemplate: | |||
| 358 | // -- the initializers of templated variables | |||
| 359 | return std::make_tuple( | |||
| 360 | &Context.getManglingNumberContext(ASTContext::NeedExtraManglingDecl, | |||
| 361 | ManglingContextDecl), | |||
| 362 | ManglingContextDecl); | |||
| 363 | } | |||
| 364 | ||||
| 365 | llvm_unreachable("unexpected context")::llvm::llvm_unreachable_internal("unexpected context", "clang/lib/Sema/SemaLambda.cpp" , 365); | |||
| 366 | } | |||
| 367 | ||||
| 368 | static QualType | |||
| 369 | buildTypeForLambdaCallOperator(Sema &S, clang::CXXRecordDecl *Class, | |||
| 370 | TemplateParameterList *TemplateParams, | |||
| 371 | TypeSourceInfo *MethodTypeInfo) { | |||
| 372 | assert(MethodTypeInfo && "expected a non null type")(static_cast <bool> (MethodTypeInfo && "expected a non null type" ) ? void (0) : __assert_fail ("MethodTypeInfo && \"expected a non null type\"" , "clang/lib/Sema/SemaLambda.cpp", 372, __extension__ __PRETTY_FUNCTION__ )); | |||
| 373 | ||||
| 374 | QualType MethodType = MethodTypeInfo->getType(); | |||
| 375 | // If a lambda appears in a dependent context or is a generic lambda (has | |||
| 376 | // template parameters) and has an 'auto' return type, deduce it to a | |||
| 377 | // dependent type. | |||
| 378 | if (Class->isDependentContext() || TemplateParams) { | |||
| 379 | const FunctionProtoType *FPT = MethodType->castAs<FunctionProtoType>(); | |||
| 380 | QualType Result = FPT->getReturnType(); | |||
| 381 | if (Result->isUndeducedType()) { | |||
| 382 | Result = S.SubstAutoTypeDependent(Result); | |||
| 383 | MethodType = S.Context.getFunctionType(Result, FPT->getParamTypes(), | |||
| 384 | FPT->getExtProtoInfo()); | |||
| 385 | } | |||
| 386 | } | |||
| 387 | return MethodType; | |||
| 388 | } | |||
| 389 | ||||
| 390 | void Sema::handleLambdaNumbering( | |||
| 391 | CXXRecordDecl *Class, CXXMethodDecl *Method, | |||
| 392 | std::optional<std::tuple<bool, unsigned, unsigned, Decl *>> Mangling) { | |||
| 393 | if (Mangling) { | |||
| 394 | bool HasKnownInternalLinkage; | |||
| 395 | unsigned ManglingNumber, DeviceManglingNumber; | |||
| 396 | Decl *ManglingContextDecl; | |||
| 397 | std::tie(HasKnownInternalLinkage, ManglingNumber, DeviceManglingNumber, | |||
| 398 | ManglingContextDecl) = *Mangling; | |||
| 399 | Class->setLambdaMangling(ManglingNumber, ManglingContextDecl, | |||
| 400 | HasKnownInternalLinkage); | |||
| 401 | Class->setDeviceLambdaManglingNumber(DeviceManglingNumber); | |||
| 402 | return; | |||
| 403 | } | |||
| 404 | ||||
| 405 | auto getMangleNumberingContext = | |||
| 406 | [this](CXXRecordDecl *Class, | |||
| 407 | Decl *ManglingContextDecl) -> MangleNumberingContext * { | |||
| 408 | // Get mangle numbering context if there's any extra decl context. | |||
| 409 | if (ManglingContextDecl) | |||
| 410 | return &Context.getManglingNumberContext( | |||
| 411 | ASTContext::NeedExtraManglingDecl, ManglingContextDecl); | |||
| 412 | // Otherwise, from that lambda's decl context. | |||
| 413 | auto DC = Class->getDeclContext(); | |||
| 414 | while (auto *CD = dyn_cast<CapturedDecl>(DC)) | |||
| 415 | DC = CD->getParent(); | |||
| 416 | return &Context.getManglingNumberContext(DC); | |||
| 417 | }; | |||
| 418 | ||||
| 419 | MangleNumberingContext *MCtx; | |||
| 420 | Decl *ManglingContextDecl; | |||
| 421 | std::tie(MCtx, ManglingContextDecl) = | |||
| 422 | getCurrentMangleNumberContext(Class->getDeclContext()); | |||
| 423 | bool HasKnownInternalLinkage = false; | |||
| 424 | if (!MCtx && (getLangOpts().CUDA || getLangOpts().SYCLIsDevice || | |||
| 425 | getLangOpts().SYCLIsHost)) { | |||
| 426 | // Force lambda numbering in CUDA/HIP as we need to name lambdas following | |||
| 427 | // ODR. Both device- and host-compilation need to have a consistent naming | |||
| 428 | // on kernel functions. As lambdas are potential part of these `__global__` | |||
| 429 | // function names, they needs numbering following ODR. | |||
| 430 | // Also force for SYCL, since we need this for the | |||
| 431 | // __builtin_sycl_unique_stable_name implementation, which depends on lambda | |||
| 432 | // mangling. | |||
| 433 | MCtx = getMangleNumberingContext(Class, ManglingContextDecl); | |||
| 434 | assert(MCtx && "Retrieving mangle numbering context failed!")(static_cast <bool> (MCtx && "Retrieving mangle numbering context failed!" ) ? void (0) : __assert_fail ("MCtx && \"Retrieving mangle numbering context failed!\"" , "clang/lib/Sema/SemaLambda.cpp", 434, __extension__ __PRETTY_FUNCTION__ )); | |||
| 435 | HasKnownInternalLinkage = true; | |||
| 436 | } | |||
| 437 | if (MCtx) { | |||
| 438 | unsigned ManglingNumber = MCtx->getManglingNumber(Method); | |||
| 439 | Class->setLambdaMangling(ManglingNumber, ManglingContextDecl, | |||
| 440 | HasKnownInternalLinkage); | |||
| 441 | Class->setDeviceLambdaManglingNumber(MCtx->getDeviceManglingNumber(Method)); | |||
| 442 | } | |||
| 443 | } | |||
| 444 | ||||
| 445 | static void buildLambdaScopeReturnType(Sema &S, LambdaScopeInfo *LSI, | |||
| 446 | CXXMethodDecl *CallOperator, | |||
| 447 | bool ExplicitResultType) { | |||
| 448 | if (ExplicitResultType) { | |||
| 449 | LSI->HasImplicitReturnType = false; | |||
| 450 | LSI->ReturnType = CallOperator->getReturnType(); | |||
| 451 | if (!LSI->ReturnType->isDependentType() && !LSI->ReturnType->isVoidType()) | |||
| 452 | S.RequireCompleteType(CallOperator->getBeginLoc(), LSI->ReturnType, | |||
| 453 | diag::err_lambda_incomplete_result); | |||
| 454 | } else { | |||
| 455 | LSI->HasImplicitReturnType = true; | |||
| 456 | } | |||
| 457 | } | |||
| 458 | ||||
| 459 | void Sema::buildLambdaScope(LambdaScopeInfo *LSI, CXXMethodDecl *CallOperator, | |||
| 460 | SourceRange IntroducerRange, | |||
| 461 | LambdaCaptureDefault CaptureDefault, | |||
| 462 | SourceLocation CaptureDefaultLoc, | |||
| 463 | bool ExplicitParams, bool Mutable) { | |||
| 464 | LSI->CallOperator = CallOperator; | |||
| 465 | CXXRecordDecl *LambdaClass = CallOperator->getParent(); | |||
| 466 | LSI->Lambda = LambdaClass; | |||
| 467 | if (CaptureDefault == LCD_ByCopy) | |||
| 468 | LSI->ImpCaptureStyle = LambdaScopeInfo::ImpCap_LambdaByval; | |||
| 469 | else if (CaptureDefault == LCD_ByRef) | |||
| 470 | LSI->ImpCaptureStyle = LambdaScopeInfo::ImpCap_LambdaByref; | |||
| 471 | LSI->CaptureDefaultLoc = CaptureDefaultLoc; | |||
| 472 | LSI->IntroducerRange = IntroducerRange; | |||
| 473 | LSI->ExplicitParams = ExplicitParams; | |||
| 474 | LSI->Mutable = Mutable; | |||
| 475 | } | |||
| 476 | ||||
| 477 | void Sema::finishLambdaExplicitCaptures(LambdaScopeInfo *LSI) { | |||
| 478 | LSI->finishedExplicitCaptures(); | |||
| 479 | } | |||
| 480 | ||||
| 481 | void Sema::ActOnLambdaExplicitTemplateParameterList( | |||
| 482 | LambdaIntroducer &Intro, SourceLocation LAngleLoc, | |||
| 483 | ArrayRef<NamedDecl *> TParams, SourceLocation RAngleLoc, | |||
| 484 | ExprResult RequiresClause) { | |||
| 485 | LambdaScopeInfo *LSI = getCurLambda(); | |||
| 486 | assert(LSI && "Expected a lambda scope")(static_cast <bool> (LSI && "Expected a lambda scope" ) ? void (0) : __assert_fail ("LSI && \"Expected a lambda scope\"" , "clang/lib/Sema/SemaLambda.cpp", 486, __extension__ __PRETTY_FUNCTION__ )); | |||
| 487 | assert(LSI->NumExplicitTemplateParams == 0 &&(static_cast <bool> (LSI->NumExplicitTemplateParams == 0 && "Already acted on explicit template parameters" ) ? void (0) : __assert_fail ("LSI->NumExplicitTemplateParams == 0 && \"Already acted on explicit template parameters\"" , "clang/lib/Sema/SemaLambda.cpp", 488, __extension__ __PRETTY_FUNCTION__ )) | |||
| 488 | "Already acted on explicit template parameters")(static_cast <bool> (LSI->NumExplicitTemplateParams == 0 && "Already acted on explicit template parameters" ) ? void (0) : __assert_fail ("LSI->NumExplicitTemplateParams == 0 && \"Already acted on explicit template parameters\"" , "clang/lib/Sema/SemaLambda.cpp", 488, __extension__ __PRETTY_FUNCTION__ )); | |||
| 489 | assert(LSI->TemplateParams.empty() &&(static_cast <bool> (LSI->TemplateParams.empty() && "Explicit template parameters should come " "before invented (auto) ones" ) ? void (0) : __assert_fail ("LSI->TemplateParams.empty() && \"Explicit template parameters should come \" \"before invented (auto) ones\"" , "clang/lib/Sema/SemaLambda.cpp", 491, __extension__ __PRETTY_FUNCTION__ )) | |||
| 490 | "Explicit template parameters should come "(static_cast <bool> (LSI->TemplateParams.empty() && "Explicit template parameters should come " "before invented (auto) ones" ) ? void (0) : __assert_fail ("LSI->TemplateParams.empty() && \"Explicit template parameters should come \" \"before invented (auto) ones\"" , "clang/lib/Sema/SemaLambda.cpp", 491, __extension__ __PRETTY_FUNCTION__ )) | |||
| 491 | "before invented (auto) ones")(static_cast <bool> (LSI->TemplateParams.empty() && "Explicit template parameters should come " "before invented (auto) ones" ) ? void (0) : __assert_fail ("LSI->TemplateParams.empty() && \"Explicit template parameters should come \" \"before invented (auto) ones\"" , "clang/lib/Sema/SemaLambda.cpp", 491, __extension__ __PRETTY_FUNCTION__ )); | |||
| 492 | assert(!TParams.empty() &&(static_cast <bool> (!TParams.empty() && "No template parameters to act on" ) ? void (0) : __assert_fail ("!TParams.empty() && \"No template parameters to act on\"" , "clang/lib/Sema/SemaLambda.cpp", 493, __extension__ __PRETTY_FUNCTION__ )) | |||
| 493 | "No template parameters to act on")(static_cast <bool> (!TParams.empty() && "No template parameters to act on" ) ? void (0) : __assert_fail ("!TParams.empty() && \"No template parameters to act on\"" , "clang/lib/Sema/SemaLambda.cpp", 493, __extension__ __PRETTY_FUNCTION__ )); | |||
| 494 | LSI->TemplateParams.append(TParams.begin(), TParams.end()); | |||
| 495 | LSI->NumExplicitTemplateParams = TParams.size(); | |||
| 496 | LSI->ExplicitTemplateParamsRange = {LAngleLoc, RAngleLoc}; | |||
| 497 | LSI->RequiresClause = RequiresClause; | |||
| 498 | } | |||
| 499 | ||||
| 500 | /// If this expression is an enumerator-like expression of some type | |||
| 501 | /// T, return the type T; otherwise, return null. | |||
| 502 | /// | |||
| 503 | /// Pointer comparisons on the result here should always work because | |||
| 504 | /// it's derived from either the parent of an EnumConstantDecl | |||
| 505 | /// (i.e. the definition) or the declaration returned by | |||
| 506 | /// EnumType::getDecl() (i.e. the definition). | |||
| 507 | static EnumDecl *findEnumForBlockReturn(Expr *E) { | |||
| 508 | // An expression is an enumerator-like expression of type T if, | |||
| 509 | // ignoring parens and parens-like expressions: | |||
| 510 | E = E->IgnoreParens(); | |||
| 511 | ||||
| 512 | // - it is an enumerator whose enum type is T or | |||
| 513 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { | |||
| 514 | if (EnumConstantDecl *D | |||
| 515 | = dyn_cast<EnumConstantDecl>(DRE->getDecl())) { | |||
| 516 | return cast<EnumDecl>(D->getDeclContext()); | |||
| 517 | } | |||
| 518 | return nullptr; | |||
| 519 | } | |||
| 520 | ||||
| 521 | // - it is a comma expression whose RHS is an enumerator-like | |||
| 522 | // expression of type T or | |||
| 523 | if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) { | |||
| 524 | if (BO->getOpcode() == BO_Comma) | |||
| 525 | return findEnumForBlockReturn(BO->getRHS()); | |||
| 526 | return nullptr; | |||
| 527 | } | |||
| 528 | ||||
| 529 | // - it is a statement-expression whose value expression is an | |||
| 530 | // enumerator-like expression of type T or | |||
| 531 | if (StmtExpr *SE = dyn_cast<StmtExpr>(E)) { | |||
| 532 | if (Expr *last = dyn_cast_or_null<Expr>(SE->getSubStmt()->body_back())) | |||
| 533 | return findEnumForBlockReturn(last); | |||
| 534 | return nullptr; | |||
| 535 | } | |||
| 536 | ||||
| 537 | // - it is a ternary conditional operator (not the GNU ?: | |||
| 538 | // extension) whose second and third operands are | |||
| 539 | // enumerator-like expressions of type T or | |||
| 540 | if (ConditionalOperator *CO = dyn_cast<ConditionalOperator>(E)) { | |||
| 541 | if (EnumDecl *ED = findEnumForBlockReturn(CO->getTrueExpr())) | |||
| 542 | if (ED == findEnumForBlockReturn(CO->getFalseExpr())) | |||
| 543 | return ED; | |||
| 544 | return nullptr; | |||
| 545 | } | |||
| 546 | ||||
| 547 | // (implicitly:) | |||
| 548 | // - it is an implicit integral conversion applied to an | |||
| 549 | // enumerator-like expression of type T or | |||
| 550 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { | |||
| 551 | // We can sometimes see integral conversions in valid | |||
| 552 | // enumerator-like expressions. | |||
| 553 | if (ICE->getCastKind() == CK_IntegralCast) | |||
| 554 | return findEnumForBlockReturn(ICE->getSubExpr()); | |||
| 555 | ||||
| 556 | // Otherwise, just rely on the type. | |||
| 557 | } | |||
| 558 | ||||
| 559 | // - it is an expression of that formal enum type. | |||
| 560 | if (const EnumType *ET = E->getType()->getAs<EnumType>()) { | |||
| 561 | return ET->getDecl(); | |||
| 562 | } | |||
| 563 | ||||
| 564 | // Otherwise, nope. | |||
| 565 | return nullptr; | |||
| 566 | } | |||
| 567 | ||||
| 568 | /// Attempt to find a type T for which the returned expression of the | |||
| 569 | /// given statement is an enumerator-like expression of that type. | |||
| 570 | static EnumDecl *findEnumForBlockReturn(ReturnStmt *ret) { | |||
| 571 | if (Expr *retValue = ret->getRetValue()) | |||
| 572 | return findEnumForBlockReturn(retValue); | |||
| 573 | return nullptr; | |||
| 574 | } | |||
| 575 | ||||
| 576 | /// Attempt to find a common type T for which all of the returned | |||
| 577 | /// expressions in a block are enumerator-like expressions of that | |||
| 578 | /// type. | |||
| 579 | static EnumDecl *findCommonEnumForBlockReturns(ArrayRef<ReturnStmt*> returns) { | |||
| 580 | ArrayRef<ReturnStmt*>::iterator i = returns.begin(), e = returns.end(); | |||
| 581 | ||||
| 582 | // Try to find one for the first return. | |||
| 583 | EnumDecl *ED = findEnumForBlockReturn(*i); | |||
| 584 | if (!ED) return nullptr; | |||
| 585 | ||||
| 586 | // Check that the rest of the returns have the same enum. | |||
| 587 | for (++i; i != e; ++i) { | |||
| 588 | if (findEnumForBlockReturn(*i) != ED) | |||
| 589 | return nullptr; | |||
| 590 | } | |||
| 591 | ||||
| 592 | // Never infer an anonymous enum type. | |||
| 593 | if (!ED->hasNameForLinkage()) return nullptr; | |||
| 594 | ||||
| 595 | return ED; | |||
| 596 | } | |||
| 597 | ||||
| 598 | /// Adjust the given return statements so that they formally return | |||
| 599 | /// the given type. It should require, at most, an IntegralCast. | |||
| 600 | static void adjustBlockReturnsToEnum(Sema &S, ArrayRef<ReturnStmt*> returns, | |||
| 601 | QualType returnType) { | |||
| 602 | for (ArrayRef<ReturnStmt*>::iterator | |||
| 603 | i = returns.begin(), e = returns.end(); i != e; ++i) { | |||
| 604 | ReturnStmt *ret = *i; | |||
| 605 | Expr *retValue = ret->getRetValue(); | |||
| 606 | if (S.Context.hasSameType(retValue->getType(), returnType)) | |||
| 607 | continue; | |||
| 608 | ||||
| 609 | // Right now we only support integral fixup casts. | |||
| 610 | assert(returnType->isIntegralOrUnscopedEnumerationType())(static_cast <bool> (returnType->isIntegralOrUnscopedEnumerationType ()) ? void (0) : __assert_fail ("returnType->isIntegralOrUnscopedEnumerationType()" , "clang/lib/Sema/SemaLambda.cpp", 610, __extension__ __PRETTY_FUNCTION__ )); | |||
| 611 | assert(retValue->getType()->isIntegralOrUnscopedEnumerationType())(static_cast <bool> (retValue->getType()->isIntegralOrUnscopedEnumerationType ()) ? void (0) : __assert_fail ("retValue->getType()->isIntegralOrUnscopedEnumerationType()" , "clang/lib/Sema/SemaLambda.cpp", 611, __extension__ __PRETTY_FUNCTION__ )); | |||
| 612 | ||||
| 613 | ExprWithCleanups *cleanups = dyn_cast<ExprWithCleanups>(retValue); | |||
| 614 | ||||
| 615 | Expr *E = (cleanups ? cleanups->getSubExpr() : retValue); | |||
| 616 | E = ImplicitCastExpr::Create(S.Context, returnType, CK_IntegralCast, E, | |||
| 617 | /*base path*/ nullptr, VK_PRValue, | |||
| 618 | FPOptionsOverride()); | |||
| 619 | if (cleanups) { | |||
| 620 | cleanups->setSubExpr(E); | |||
| 621 | } else { | |||
| 622 | ret->setRetValue(E); | |||
| 623 | } | |||
| 624 | } | |||
| 625 | } | |||
| 626 | ||||
| 627 | void Sema::deduceClosureReturnType(CapturingScopeInfo &CSI) { | |||
| 628 | assert(CSI.HasImplicitReturnType)(static_cast <bool> (CSI.HasImplicitReturnType) ? void ( 0) : __assert_fail ("CSI.HasImplicitReturnType", "clang/lib/Sema/SemaLambda.cpp" , 628, __extension__ __PRETTY_FUNCTION__)); | |||
| 629 | // If it was ever a placeholder, it had to been deduced to DependentTy. | |||
| 630 | assert(CSI.ReturnType.isNull() || !CSI.ReturnType->isUndeducedType())(static_cast <bool> (CSI.ReturnType.isNull() || !CSI.ReturnType ->isUndeducedType()) ? void (0) : __assert_fail ("CSI.ReturnType.isNull() || !CSI.ReturnType->isUndeducedType()" , "clang/lib/Sema/SemaLambda.cpp", 630, __extension__ __PRETTY_FUNCTION__ )); | |||
| 631 | assert((!isa<LambdaScopeInfo>(CSI) || !getLangOpts().CPlusPlus14) &&(static_cast <bool> ((!isa<LambdaScopeInfo>(CSI) || !getLangOpts().CPlusPlus14) && "lambda expressions use auto deduction in C++14 onwards" ) ? void (0) : __assert_fail ("(!isa<LambdaScopeInfo>(CSI) || !getLangOpts().CPlusPlus14) && \"lambda expressions use auto deduction in C++14 onwards\"" , "clang/lib/Sema/SemaLambda.cpp", 632, __extension__ __PRETTY_FUNCTION__ )) | |||
| 632 | "lambda expressions use auto deduction in C++14 onwards")(static_cast <bool> ((!isa<LambdaScopeInfo>(CSI) || !getLangOpts().CPlusPlus14) && "lambda expressions use auto deduction in C++14 onwards" ) ? void (0) : __assert_fail ("(!isa<LambdaScopeInfo>(CSI) || !getLangOpts().CPlusPlus14) && \"lambda expressions use auto deduction in C++14 onwards\"" , "clang/lib/Sema/SemaLambda.cpp", 632, __extension__ __PRETTY_FUNCTION__ )); | |||
| 633 | ||||
| 634 | // C++ core issue 975: | |||
| 635 | // If a lambda-expression does not include a trailing-return-type, | |||
| 636 | // it is as if the trailing-return-type denotes the following type: | |||
| 637 | // - if there are no return statements in the compound-statement, | |||
| 638 | // or all return statements return either an expression of type | |||
| 639 | // void or no expression or braced-init-list, the type void; | |||
| 640 | // - otherwise, if all return statements return an expression | |||
| 641 | // and the types of the returned expressions after | |||
| 642 | // lvalue-to-rvalue conversion (4.1 [conv.lval]), | |||
| 643 | // array-to-pointer conversion (4.2 [conv.array]), and | |||
| 644 | // function-to-pointer conversion (4.3 [conv.func]) are the | |||
| 645 | // same, that common type; | |||
| 646 | // - otherwise, the program is ill-formed. | |||
| 647 | // | |||
| 648 | // C++ core issue 1048 additionally removes top-level cv-qualifiers | |||
| 649 | // from the types of returned expressions to match the C++14 auto | |||
| 650 | // deduction rules. | |||
| 651 | // | |||
| 652 | // In addition, in blocks in non-C++ modes, if all of the return | |||
| 653 | // statements are enumerator-like expressions of some type T, where | |||
| 654 | // T has a name for linkage, then we infer the return type of the | |||
| 655 | // block to be that type. | |||
| 656 | ||||
| 657 | // First case: no return statements, implicit void return type. | |||
| 658 | ASTContext &Ctx = getASTContext(); | |||
| 659 | if (CSI.Returns.empty()) { | |||
| 660 | // It's possible there were simply no /valid/ return statements. | |||
| 661 | // In this case, the first one we found may have at least given us a type. | |||
| 662 | if (CSI.ReturnType.isNull()) | |||
| 663 | CSI.ReturnType = Ctx.VoidTy; | |||
| 664 | return; | |||
| 665 | } | |||
| 666 | ||||
| 667 | // Second case: at least one return statement has dependent type. | |||
| 668 | // Delay type checking until instantiation. | |||
| 669 | assert(!CSI.ReturnType.isNull() && "We should have a tentative return type.")(static_cast <bool> (!CSI.ReturnType.isNull() && "We should have a tentative return type.") ? void (0) : __assert_fail ("!CSI.ReturnType.isNull() && \"We should have a tentative return type.\"" , "clang/lib/Sema/SemaLambda.cpp", 669, __extension__ __PRETTY_FUNCTION__ )); | |||
| 670 | if (CSI.ReturnType->isDependentType()) | |||
| 671 | return; | |||
| 672 | ||||
| 673 | // Try to apply the enum-fuzz rule. | |||
| 674 | if (!getLangOpts().CPlusPlus) { | |||
| 675 | assert(isa<BlockScopeInfo>(CSI))(static_cast <bool> (isa<BlockScopeInfo>(CSI)) ? void (0) : __assert_fail ("isa<BlockScopeInfo>(CSI)", "clang/lib/Sema/SemaLambda.cpp" , 675, __extension__ __PRETTY_FUNCTION__)); | |||
| 676 | const EnumDecl *ED = findCommonEnumForBlockReturns(CSI.Returns); | |||
| 677 | if (ED) { | |||
| 678 | CSI.ReturnType = Context.getTypeDeclType(ED); | |||
| 679 | adjustBlockReturnsToEnum(*this, CSI.Returns, CSI.ReturnType); | |||
| 680 | return; | |||
| 681 | } | |||
| 682 | } | |||
| 683 | ||||
| 684 | // Third case: only one return statement. Don't bother doing extra work! | |||
| 685 | if (CSI.Returns.size() == 1) | |||
| 686 | return; | |||
| 687 | ||||
| 688 | // General case: many return statements. | |||
| 689 | // Check that they all have compatible return types. | |||
| 690 | ||||
| 691 | // We require the return types to strictly match here. | |||
| 692 | // Note that we've already done the required promotions as part of | |||
| 693 | // processing the return statement. | |||
| 694 | for (const ReturnStmt *RS : CSI.Returns) { | |||
| 695 | const Expr *RetE = RS->getRetValue(); | |||
| 696 | ||||
| 697 | QualType ReturnType = | |||
| 698 | (RetE ? RetE->getType() : Context.VoidTy).getUnqualifiedType(); | |||
| 699 | if (Context.getCanonicalFunctionResultType(ReturnType) == | |||
| 700 | Context.getCanonicalFunctionResultType(CSI.ReturnType)) { | |||
| 701 | // Use the return type with the strictest possible nullability annotation. | |||
| 702 | auto RetTyNullability = ReturnType->getNullability(); | |||
| 703 | auto BlockNullability = CSI.ReturnType->getNullability(); | |||
| 704 | if (BlockNullability && | |||
| 705 | (!RetTyNullability || | |||
| 706 | hasWeakerNullability(*RetTyNullability, *BlockNullability))) | |||
| 707 | CSI.ReturnType = ReturnType; | |||
| 708 | continue; | |||
| 709 | } | |||
| 710 | ||||
| 711 | // FIXME: This is a poor diagnostic for ReturnStmts without expressions. | |||
| 712 | // TODO: It's possible that the *first* return is the divergent one. | |||
| 713 | Diag(RS->getBeginLoc(), | |||
| 714 | diag::err_typecheck_missing_return_type_incompatible) | |||
| 715 | << ReturnType << CSI.ReturnType << isa<LambdaScopeInfo>(CSI); | |||
| 716 | // Continue iterating so that we keep emitting diagnostics. | |||
| 717 | } | |||
| 718 | } | |||
| 719 | ||||
| 720 | QualType Sema::buildLambdaInitCaptureInitialization( | |||
| 721 | SourceLocation Loc, bool ByRef, SourceLocation EllipsisLoc, | |||
| 722 | std::optional<unsigned> NumExpansions, IdentifierInfo *Id, | |||
| 723 | bool IsDirectInit, Expr *&Init) { | |||
| 724 | // Create an 'auto' or 'auto&' TypeSourceInfo that we can use to | |||
| 725 | // deduce against. | |||
| 726 | QualType DeductType = Context.getAutoDeductType(); | |||
| 727 | TypeLocBuilder TLB; | |||
| 728 | AutoTypeLoc TL = TLB.push<AutoTypeLoc>(DeductType); | |||
| 729 | TL.setNameLoc(Loc); | |||
| 730 | if (ByRef) { | |||
| 731 | DeductType = BuildReferenceType(DeductType, true, Loc, Id); | |||
| 732 | assert(!DeductType.isNull() && "can't build reference to auto")(static_cast <bool> (!DeductType.isNull() && "can't build reference to auto" ) ? void (0) : __assert_fail ("!DeductType.isNull() && \"can't build reference to auto\"" , "clang/lib/Sema/SemaLambda.cpp", 732, __extension__ __PRETTY_FUNCTION__ )); | |||
| 733 | TLB.push<ReferenceTypeLoc>(DeductType).setSigilLoc(Loc); | |||
| 734 | } | |||
| 735 | if (EllipsisLoc.isValid()) { | |||
| 736 | if (Init->containsUnexpandedParameterPack()) { | |||
| 737 | Diag(EllipsisLoc, getLangOpts().CPlusPlus20 | |||
| 738 | ? diag::warn_cxx17_compat_init_capture_pack | |||
| 739 | : diag::ext_init_capture_pack); | |||
| 740 | DeductType = Context.getPackExpansionType(DeductType, NumExpansions, | |||
| 741 | /*ExpectPackInType=*/false); | |||
| 742 | TLB.push<PackExpansionTypeLoc>(DeductType).setEllipsisLoc(EllipsisLoc); | |||
| 743 | } else { | |||
| 744 | // Just ignore the ellipsis for now and form a non-pack variable. We'll | |||
| 745 | // diagnose this later when we try to capture it. | |||
| 746 | } | |||
| 747 | } | |||
| 748 | TypeSourceInfo *TSI = TLB.getTypeSourceInfo(Context, DeductType); | |||
| 749 | ||||
| 750 | // Deduce the type of the init capture. | |||
| 751 | QualType DeducedType = deduceVarTypeFromInitializer( | |||
| 752 | /*VarDecl*/nullptr, DeclarationName(Id), DeductType, TSI, | |||
| 753 | SourceRange(Loc, Loc), IsDirectInit, Init); | |||
| 754 | if (DeducedType.isNull()) | |||
| 755 | return QualType(); | |||
| 756 | ||||
| 757 | // Are we a non-list direct initialization? | |||
| 758 | ParenListExpr *CXXDirectInit = dyn_cast<ParenListExpr>(Init); | |||
| 759 | ||||
| 760 | // Perform initialization analysis and ensure any implicit conversions | |||
| 761 | // (such as lvalue-to-rvalue) are enforced. | |||
| 762 | InitializedEntity Entity = | |||
| 763 | InitializedEntity::InitializeLambdaCapture(Id, DeducedType, Loc); | |||
| 764 | InitializationKind Kind = | |||
| 765 | IsDirectInit | |||
| 766 | ? (CXXDirectInit ? InitializationKind::CreateDirect( | |||
| 767 | Loc, Init->getBeginLoc(), Init->getEndLoc()) | |||
| 768 | : InitializationKind::CreateDirectList(Loc)) | |||
| 769 | : InitializationKind::CreateCopy(Loc, Init->getBeginLoc()); | |||
| 770 | ||||
| 771 | MultiExprArg Args = Init; | |||
| 772 | if (CXXDirectInit) | |||
| 773 | Args = | |||
| 774 | MultiExprArg(CXXDirectInit->getExprs(), CXXDirectInit->getNumExprs()); | |||
| 775 | QualType DclT; | |||
| 776 | InitializationSequence InitSeq(*this, Entity, Kind, Args); | |||
| 777 | ExprResult Result = InitSeq.Perform(*this, Entity, Kind, Args, &DclT); | |||
| 778 | ||||
| 779 | if (Result.isInvalid()) | |||
| 780 | return QualType(); | |||
| 781 | ||||
| 782 | Init = Result.getAs<Expr>(); | |||
| 783 | return DeducedType; | |||
| 784 | } | |||
| 785 | ||||
| 786 | VarDecl *Sema::createLambdaInitCaptureVarDecl( | |||
| 787 | SourceLocation Loc, QualType InitCaptureType, SourceLocation EllipsisLoc, | |||
| 788 | IdentifierInfo *Id, unsigned InitStyle, Expr *Init, DeclContext *DeclCtx) { | |||
| 789 | // FIXME: Retain the TypeSourceInfo from buildLambdaInitCaptureInitialization | |||
| 790 | // rather than reconstructing it here. | |||
| 791 | TypeSourceInfo *TSI = Context.getTrivialTypeSourceInfo(InitCaptureType, Loc); | |||
| 792 | if (auto PETL = TSI->getTypeLoc().getAs<PackExpansionTypeLoc>()) | |||
| 793 | PETL.setEllipsisLoc(EllipsisLoc); | |||
| 794 | ||||
| 795 | // Create a dummy variable representing the init-capture. This is not actually | |||
| 796 | // used as a variable, and only exists as a way to name and refer to the | |||
| 797 | // init-capture. | |||
| 798 | // FIXME: Pass in separate source locations for '&' and identifier. | |||
| 799 | VarDecl *NewVD = VarDecl::Create(Context, DeclCtx, Loc, Loc, Id, | |||
| 800 | InitCaptureType, TSI, SC_Auto); | |||
| 801 | NewVD->setInitCapture(true); | |||
| 802 | NewVD->setReferenced(true); | |||
| 803 | // FIXME: Pass in a VarDecl::InitializationStyle. | |||
| 804 | NewVD->setInitStyle(static_cast<VarDecl::InitializationStyle>(InitStyle)); | |||
| 805 | NewVD->markUsed(Context); | |||
| 806 | NewVD->setInit(Init); | |||
| 807 | if (NewVD->isParameterPack()) | |||
| 808 | getCurLambda()->LocalPacks.push_back(NewVD); | |||
| 809 | return NewVD; | |||
| 810 | } | |||
| 811 | ||||
| 812 | void Sema::addInitCapture(LambdaScopeInfo *LSI, VarDecl *Var, | |||
| 813 | bool isReferenceType) { | |||
| 814 | assert(Var->isInitCapture() && "init capture flag should be set")(static_cast <bool> (Var->isInitCapture() && "init capture flag should be set") ? void (0) : __assert_fail ("Var->isInitCapture() && \"init capture flag should be set\"" , "clang/lib/Sema/SemaLambda.cpp", 814, __extension__ __PRETTY_FUNCTION__ )); | |||
| 815 | LSI->addCapture(Var, /*isBlock*/ false, isReferenceType, | |||
| 816 | /*isNested*/ false, Var->getLocation(), SourceLocation(), | |||
| 817 | Var->getType(), /*Invalid*/ false); | |||
| 818 | } | |||
| 819 | ||||
| 820 | // Unlike getCurLambda, getCurrentLambdaScopeUnsafe doesn't | |||
| 821 | // check that the current lambda is in a consistent or fully constructed state. | |||
| 822 | static LambdaScopeInfo *getCurrentLambdaScopeUnsafe(Sema &S) { | |||
| 823 | assert(!S.FunctionScopes.empty())(static_cast <bool> (!S.FunctionScopes.empty()) ? void ( 0) : __assert_fail ("!S.FunctionScopes.empty()", "clang/lib/Sema/SemaLambda.cpp" , 823, __extension__ __PRETTY_FUNCTION__)); | |||
| 824 | return cast<LambdaScopeInfo>(S.FunctionScopes[S.FunctionScopes.size() - 1]); | |||
| 825 | } | |||
| 826 | ||||
| 827 | static TypeSourceInfo * | |||
| 828 | getDummyLambdaType(Sema &S, SourceLocation Loc = SourceLocation()) { | |||
| 829 | // C++11 [expr.prim.lambda]p4: | |||
| 830 | // If a lambda-expression does not include a lambda-declarator, it is as | |||
| 831 | // if the lambda-declarator were (). | |||
| 832 | FunctionProtoType::ExtProtoInfo EPI(S.Context.getDefaultCallingConvention( | |||
| 833 | /*IsVariadic=*/false, /*IsCXXMethod=*/true)); | |||
| 834 | EPI.HasTrailingReturn = true; | |||
| 835 | EPI.TypeQuals.addConst(); | |||
| 836 | LangAS AS = S.getDefaultCXXMethodAddrSpace(); | |||
| 837 | if (AS != LangAS::Default) | |||
| 838 | EPI.TypeQuals.addAddressSpace(AS); | |||
| 839 | ||||
| 840 | // C++1y [expr.prim.lambda]: | |||
| 841 | // The lambda return type is 'auto', which is replaced by the | |||
| 842 | // trailing-return type if provided and/or deduced from 'return' | |||
| 843 | // statements | |||
| 844 | // We don't do this before C++1y, because we don't support deduced return | |||
| 845 | // types there. | |||
| 846 | QualType DefaultTypeForNoTrailingReturn = S.getLangOpts().CPlusPlus14 | |||
| 847 | ? S.Context.getAutoDeductType() | |||
| 848 | : S.Context.DependentTy; | |||
| 849 | QualType MethodTy = S.Context.getFunctionType(DefaultTypeForNoTrailingReturn, | |||
| 850 | std::nullopt, EPI); | |||
| 851 | return S.Context.getTrivialTypeSourceInfo(MethodTy, Loc); | |||
| 852 | } | |||
| 853 | ||||
| 854 | static TypeSourceInfo *getLambdaType(Sema &S, LambdaIntroducer &Intro, | |||
| 855 | Declarator &ParamInfo, Scope *CurScope, | |||
| 856 | SourceLocation Loc, | |||
| 857 | bool &ExplicitResultType) { | |||
| 858 | ||||
| 859 | ExplicitResultType = false; | |||
| 860 | ||||
| 861 | assert((static_cast <bool> ((ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_static) && "Unexpected storage specifier" ) ? void (0) : __assert_fail ("(ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) && \"Unexpected storage specifier\"" , "clang/lib/Sema/SemaLambda.cpp", 865, __extension__ __PRETTY_FUNCTION__ )) | |||
| 862 | (ParamInfo.getDeclSpec().getStorageClassSpec() ==(static_cast <bool> ((ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_static) && "Unexpected storage specifier" ) ? void (0) : __assert_fail ("(ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) && \"Unexpected storage specifier\"" , "clang/lib/Sema/SemaLambda.cpp", 865, __extension__ __PRETTY_FUNCTION__ )) | |||
| 863 | DeclSpec::SCS_unspecified ||(static_cast <bool> ((ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_static) && "Unexpected storage specifier" ) ? void (0) : __assert_fail ("(ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) && \"Unexpected storage specifier\"" , "clang/lib/Sema/SemaLambda.cpp", 865, __extension__ __PRETTY_FUNCTION__ )) | |||
| 864 | ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) &&(static_cast <bool> ((ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_static) && "Unexpected storage specifier" ) ? void (0) : __assert_fail ("(ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) && \"Unexpected storage specifier\"" , "clang/lib/Sema/SemaLambda.cpp", 865, __extension__ __PRETTY_FUNCTION__ )) | |||
| 865 | "Unexpected storage specifier")(static_cast <bool> ((ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec () == DeclSpec::SCS_static) && "Unexpected storage specifier" ) ? void (0) : __assert_fail ("(ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_unspecified || ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) && \"Unexpected storage specifier\"" , "clang/lib/Sema/SemaLambda.cpp", 865, __extension__ __PRETTY_FUNCTION__ )); | |||
| 866 | bool IsLambdaStatic = | |||
| 867 | ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static; | |||
| 868 | ||||
| 869 | TypeSourceInfo *MethodTyInfo; | |||
| 870 | ||||
| 871 | if (ParamInfo.getNumTypeObjects() == 0) { | |||
| 872 | MethodTyInfo = getDummyLambdaType(S, Loc); | |||
| 873 | } else { | |||
| 874 | DeclaratorChunk::FunctionTypeInfo &FTI = ParamInfo.getFunctionTypeInfo(); | |||
| 875 | ExplicitResultType = FTI.hasTrailingReturnType(); | |||
| 876 | if (!FTI.hasMutableQualifier() && !IsLambdaStatic) | |||
| 877 | FTI.getOrCreateMethodQualifiers().SetTypeQual(DeclSpec::TQ_const, Loc); | |||
| 878 | ||||
| 879 | if (ExplicitResultType && S.getLangOpts().HLSL) { | |||
| 880 | QualType RetTy = FTI.getTrailingReturnType().get(); | |||
| 881 | if (!RetTy.isNull()) { | |||
| 882 | // HLSL does not support specifying an address space on a lambda return | |||
| 883 | // type. | |||
| 884 | LangAS AddressSpace = RetTy.getAddressSpace(); | |||
| 885 | if (AddressSpace != LangAS::Default) | |||
| 886 | S.Diag(FTI.getTrailingReturnTypeLoc(), | |||
| 887 | diag::err_return_value_with_address_space); | |||
| 888 | } | |||
| 889 | } | |||
| 890 | ||||
| 891 | MethodTyInfo = S.GetTypeForDeclarator(ParamInfo, CurScope); | |||
| 892 | assert(MethodTyInfo && "no type from lambda-declarator")(static_cast <bool> (MethodTyInfo && "no type from lambda-declarator" ) ? void (0) : __assert_fail ("MethodTyInfo && \"no type from lambda-declarator\"" , "clang/lib/Sema/SemaLambda.cpp", 892, __extension__ __PRETTY_FUNCTION__ )); | |||
| 893 | ||||
| 894 | // Check for unexpanded parameter packs in the method type. | |||
| 895 | if (MethodTyInfo->getType()->containsUnexpandedParameterPack()) | |||
| 896 | S.DiagnoseUnexpandedParameterPack(Intro.Range.getBegin(), MethodTyInfo, | |||
| 897 | S.UPPC_DeclarationType); | |||
| 898 | } | |||
| 899 | return MethodTyInfo; | |||
| 900 | } | |||
| 901 | ||||
| 902 | CXXMethodDecl *Sema::CreateLambdaCallOperator(SourceRange IntroducerRange, | |||
| 903 | CXXRecordDecl *Class) { | |||
| 904 | ||||
| 905 | // C++20 [expr.prim.lambda.closure]p3: | |||
| 906 | // The closure type for a lambda-expression has a public inline function | |||
| 907 | // call operator (for a non-generic lambda) or function call operator | |||
| 908 | // template (for a generic lambda) whose parameters and return type are | |||
| 909 | // described by the lambda-expression's parameter-declaration-clause | |||
| 910 | // and trailing-return-type respectively. | |||
| 911 | DeclarationName MethodName = | |||
| 912 | Context.DeclarationNames.getCXXOperatorName(OO_Call); | |||
| 913 | DeclarationNameLoc MethodNameLoc = | |||
| 914 | DeclarationNameLoc::makeCXXOperatorNameLoc(IntroducerRange.getBegin()); | |||
| 915 | CXXMethodDecl *Method = CXXMethodDecl::Create( | |||
| 916 | Context, Class, SourceLocation(), | |||
| 917 | DeclarationNameInfo(MethodName, IntroducerRange.getBegin(), | |||
| 918 | MethodNameLoc), | |||
| 919 | QualType(), /*Tinfo=*/nullptr, SC_None, | |||
| 920 | getCurFPFeatures().isFPConstrained(), | |||
| 921 | /*isInline=*/true, ConstexprSpecKind::Unspecified, SourceLocation(), | |||
| 922 | /*TrailingRequiresClause=*/nullptr); | |||
| 923 | Method->setAccess(AS_public); | |||
| 924 | return Method; | |||
| 925 | } | |||
| 926 | ||||
| 927 | void Sema::CompleteLambdaCallOperator( | |||
| 928 | CXXMethodDecl *Method, SourceLocation LambdaLoc, | |||
| 929 | SourceLocation CallOperatorLoc, Expr *TrailingRequiresClause, | |||
| 930 | TypeSourceInfo *MethodTyInfo, ConstexprSpecKind ConstexprKind, | |||
| 931 | StorageClass SC, ArrayRef<ParmVarDecl *> Params, | |||
| 932 | bool HasExplicitResultType) { | |||
| 933 | ||||
| 934 | LambdaScopeInfo *LSI = getCurrentLambdaScopeUnsafe(*this); | |||
| 935 | ||||
| 936 | if (TrailingRequiresClause) | |||
| 937 | Method->setTrailingRequiresClause(TrailingRequiresClause); | |||
| 938 | ||||
| 939 | TemplateParameterList *TemplateParams = | |||
| 940 | getGenericLambdaTemplateParameterList(LSI, *this); | |||
| 941 | ||||
| 942 | DeclContext *DC = Method->getLexicalDeclContext(); | |||
| 943 | Method->setLexicalDeclContext(LSI->Lambda); | |||
| 944 | if (TemplateParams) { | |||
| 945 | FunctionTemplateDecl *TemplateMethod = FunctionTemplateDecl::Create( | |||
| 946 | Context, LSI->Lambda, Method->getLocation(), Method->getDeclName(), | |||
| 947 | TemplateParams, Method); | |||
| 948 | TemplateMethod->setAccess(AS_public); | |||
| 949 | Method->setDescribedFunctionTemplate(TemplateMethod); | |||
| 950 | LSI->Lambda->addDecl(TemplateMethod); | |||
| 951 | TemplateMethod->setLexicalDeclContext(DC); | |||
| 952 | } else { | |||
| 953 | LSI->Lambda->addDecl(Method); | |||
| 954 | } | |||
| 955 | LSI->Lambda->setLambdaIsGeneric(TemplateParams); | |||
| 956 | LSI->Lambda->setLambdaTypeInfo(MethodTyInfo); | |||
| 957 | ||||
| 958 | Method->setLexicalDeclContext(DC); | |||
| 959 | Method->setLocation(LambdaLoc); | |||
| 960 | Method->setInnerLocStart(CallOperatorLoc); | |||
| 961 | Method->setTypeSourceInfo(MethodTyInfo); | |||
| 962 | Method->setType(buildTypeForLambdaCallOperator(*this, LSI->Lambda, | |||
| 963 | TemplateParams, MethodTyInfo)); | |||
| 964 | Method->setConstexprKind(ConstexprKind); | |||
| 965 | Method->setStorageClass(SC); | |||
| 966 | if (!Params.empty()) { | |||
| 967 | CheckParmsForFunctionDef(Params, /*CheckParameterNames=*/false); | |||
| 968 | Method->setParams(Params); | |||
| 969 | for (auto P : Method->parameters()) { | |||
| 970 | if (!P) | |||
| 971 | continue; | |||
| 972 | P->setOwningFunction(Method); | |||
| 973 | } | |||
| 974 | } | |||
| 975 | ||||
| 976 | buildLambdaScopeReturnType(*this, LSI, Method, HasExplicitResultType); | |||
| 977 | } | |||
| 978 | ||||
| 979 | void Sema::ActOnLambdaExpressionAfterIntroducer(LambdaIntroducer &Intro, | |||
| 980 | Scope *CurrentScope) { | |||
| 981 | ||||
| 982 | LambdaScopeInfo *LSI = getCurLambda(); | |||
| 983 | assert(LSI && "LambdaScopeInfo should be on stack!")(static_cast <bool> (LSI && "LambdaScopeInfo should be on stack!" ) ? void (0) : __assert_fail ("LSI && \"LambdaScopeInfo should be on stack!\"" , "clang/lib/Sema/SemaLambda.cpp", 983, __extension__ __PRETTY_FUNCTION__ )); | |||
| 984 | ||||
| 985 | if (Intro.Default == LCD_ByCopy) | |||
| 986 | LSI->ImpCaptureStyle = LambdaScopeInfo::ImpCap_LambdaByval; | |||
| 987 | else if (Intro.Default == LCD_ByRef) | |||
| 988 | LSI->ImpCaptureStyle = LambdaScopeInfo::ImpCap_LambdaByref; | |||
| 989 | LSI->CaptureDefaultLoc = Intro.DefaultLoc; | |||
| 990 | LSI->IntroducerRange = Intro.Range; | |||
| 991 | LSI->AfterParameterList = false; | |||
| 992 | ||||
| 993 | assert(LSI->NumExplicitTemplateParams == 0)(static_cast <bool> (LSI->NumExplicitTemplateParams == 0) ? void (0) : __assert_fail ("LSI->NumExplicitTemplateParams == 0" , "clang/lib/Sema/SemaLambda.cpp", 993, __extension__ __PRETTY_FUNCTION__ )); | |||
| 994 | ||||
| 995 | // Determine if we're within a context where we know that the lambda will | |||
| 996 | // be dependent, because there are template parameters in scope. | |||
| 997 | CXXRecordDecl::LambdaDependencyKind LambdaDependencyKind = | |||
| 998 | CXXRecordDecl::LDK_Unknown; | |||
| 999 | if (LSI->NumExplicitTemplateParams > 0) { | |||
| 1000 | Scope *TemplateParamScope = CurScope->getTemplateParamParent(); | |||
| 1001 | assert(TemplateParamScope &&(static_cast <bool> (TemplateParamScope && "Lambda with explicit template param list should establish a " "template param scope") ? void (0) : __assert_fail ("TemplateParamScope && \"Lambda with explicit template param list should establish a \" \"template param scope\"" , "clang/lib/Sema/SemaLambda.cpp", 1003, __extension__ __PRETTY_FUNCTION__ )) | |||
| 1002 | "Lambda with explicit template param list should establish a "(static_cast <bool> (TemplateParamScope && "Lambda with explicit template param list should establish a " "template param scope") ? void (0) : __assert_fail ("TemplateParamScope && \"Lambda with explicit template param list should establish a \" \"template param scope\"" , "clang/lib/Sema/SemaLambda.cpp", 1003, __extension__ __PRETTY_FUNCTION__ )) | |||
| 1003 | "template param scope")(static_cast <bool> (TemplateParamScope && "Lambda with explicit template param list should establish a " "template param scope") ? void (0) : __assert_fail ("TemplateParamScope && \"Lambda with explicit template param list should establish a \" \"template param scope\"" , "clang/lib/Sema/SemaLambda.cpp", 1003, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1004 | assert(TemplateParamScope->getParent())(static_cast <bool> (TemplateParamScope->getParent() ) ? void (0) : __assert_fail ("TemplateParamScope->getParent()" , "clang/lib/Sema/SemaLambda.cpp", 1004, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1005 | if (TemplateParamScope->getParent()->getTemplateParamParent() != nullptr) | |||
| 1006 | LambdaDependencyKind = CXXRecordDecl::LDK_AlwaysDependent; | |||
| 1007 | } else if (CurScope->getTemplateParamParent() != nullptr) { | |||
| 1008 | LambdaDependencyKind = CXXRecordDecl::LDK_AlwaysDependent; | |||
| 1009 | } | |||
| 1010 | ||||
| 1011 | CXXRecordDecl *Class = createLambdaClosureType( | |||
| 1012 | Intro.Range, /*Info=*/nullptr, LambdaDependencyKind, Intro.Default); | |||
| 1013 | LSI->Lambda = Class; | |||
| 1014 | ||||
| 1015 | CXXMethodDecl *Method = CreateLambdaCallOperator(Intro.Range, Class); | |||
| 1016 | LSI->CallOperator = Method; | |||
| 1017 | Method->setLexicalDeclContext(CurContext); | |||
| 1018 | ||||
| 1019 | PushDeclContext(CurScope, Method); | |||
| 1020 | ||||
| 1021 | bool ContainsUnexpandedParameterPack = false; | |||
| 1022 | ||||
| 1023 | // Distinct capture names, for diagnostics. | |||
| 1024 | llvm::DenseMap<IdentifierInfo *, ValueDecl *> CaptureNames; | |||
| 1025 | ||||
| 1026 | // Handle explicit captures. | |||
| 1027 | SourceLocation PrevCaptureLoc = | |||
| 1028 | Intro.Default == LCD_None ? Intro.Range.getBegin() : Intro.DefaultLoc; | |||
| 1029 | for (auto C = Intro.Captures.begin(), E = Intro.Captures.end(); C != E; | |||
| 1030 | PrevCaptureLoc = C->Loc, ++C) { | |||
| 1031 | if (C->Kind == LCK_This || C->Kind == LCK_StarThis) { | |||
| 1032 | if (C->Kind == LCK_StarThis) | |||
| 1033 | Diag(C->Loc, !getLangOpts().CPlusPlus17 | |||
| 1034 | ? diag::ext_star_this_lambda_capture_cxx17 | |||
| 1035 | : diag::warn_cxx14_compat_star_this_lambda_capture); | |||
| 1036 | ||||
| 1037 | // C++11 [expr.prim.lambda]p8: | |||
| 1038 | // An identifier or this shall not appear more than once in a | |||
| 1039 | // lambda-capture. | |||
| 1040 | if (LSI->isCXXThisCaptured()) { | |||
| 1041 | Diag(C->Loc, diag::err_capture_more_than_once) | |||
| 1042 | << "'this'" << SourceRange(LSI->getCXXThisCapture().getLocation()) | |||
| 1043 | << FixItHint::CreateRemoval( | |||
| 1044 | SourceRange(getLocForEndOfToken(PrevCaptureLoc), C->Loc)); | |||
| 1045 | continue; | |||
| 1046 | } | |||
| 1047 | ||||
| 1048 | // C++20 [expr.prim.lambda]p8: | |||
| 1049 | // If a lambda-capture includes a capture-default that is =, | |||
| 1050 | // each simple-capture of that lambda-capture shall be of the form | |||
| 1051 | // "&identifier", "this", or "* this". [ Note: The form [&,this] is | |||
| 1052 | // redundant but accepted for compatibility with ISO C++14. --end note ] | |||
| 1053 | if (Intro.Default == LCD_ByCopy && C->Kind != LCK_StarThis) | |||
| 1054 | Diag(C->Loc, !getLangOpts().CPlusPlus20 | |||
| 1055 | ? diag::ext_equals_this_lambda_capture_cxx20 | |||
| 1056 | : diag::warn_cxx17_compat_equals_this_lambda_capture); | |||
| 1057 | ||||
| 1058 | // C++11 [expr.prim.lambda]p12: | |||
| 1059 | // If this is captured by a local lambda expression, its nearest | |||
| 1060 | // enclosing function shall be a non-static member function. | |||
| 1061 | QualType ThisCaptureType = getCurrentThisType(); | |||
| 1062 | if (ThisCaptureType.isNull()) { | |||
| 1063 | Diag(C->Loc, diag::err_this_capture) << true; | |||
| 1064 | continue; | |||
| 1065 | } | |||
| 1066 | ||||
| 1067 | CheckCXXThisCapture(C->Loc, /*Explicit=*/true, /*BuildAndDiagnose*/ true, | |||
| 1068 | /*FunctionScopeIndexToStopAtPtr*/ nullptr, | |||
| 1069 | C->Kind == LCK_StarThis); | |||
| 1070 | if (!LSI->Captures.empty()) | |||
| 1071 | LSI->ExplicitCaptureRanges[LSI->Captures.size() - 1] = C->ExplicitRange; | |||
| 1072 | continue; | |||
| 1073 | } | |||
| 1074 | ||||
| 1075 | assert(C->Id && "missing identifier for capture")(static_cast <bool> (C->Id && "missing identifier for capture" ) ? void (0) : __assert_fail ("C->Id && \"missing identifier for capture\"" , "clang/lib/Sema/SemaLambda.cpp", 1075, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1076 | ||||
| 1077 | if (C->Init.isInvalid()) | |||
| 1078 | continue; | |||
| 1079 | ||||
| 1080 | ValueDecl *Var = nullptr; | |||
| 1081 | if (C->Init.isUsable()) { | |||
| 1082 | Diag(C->Loc, getLangOpts().CPlusPlus14 | |||
| 1083 | ? diag::warn_cxx11_compat_init_capture | |||
| 1084 | : diag::ext_init_capture); | |||
| 1085 | ||||
| 1086 | // If the initializer expression is usable, but the InitCaptureType | |||
| 1087 | // is not, then an error has occurred - so ignore the capture for now. | |||
| 1088 | // for e.g., [n{0}] { }; <-- if no <initializer_list> is included. | |||
| 1089 | // FIXME: we should create the init capture variable and mark it invalid | |||
| 1090 | // in this case. | |||
| 1091 | if (C->InitCaptureType.get().isNull()) | |||
| 1092 | continue; | |||
| 1093 | ||||
| 1094 | if (C->Init.get()->containsUnexpandedParameterPack() && | |||
| 1095 | !C->InitCaptureType.get()->getAs<PackExpansionType>()) | |||
| 1096 | DiagnoseUnexpandedParameterPack(C->Init.get(), UPPC_Initializer); | |||
| 1097 | ||||
| 1098 | unsigned InitStyle; | |||
| 1099 | switch (C->InitKind) { | |||
| 1100 | case LambdaCaptureInitKind::NoInit: | |||
| 1101 | llvm_unreachable("not an init-capture?")::llvm::llvm_unreachable_internal("not an init-capture?", "clang/lib/Sema/SemaLambda.cpp" , 1101); | |||
| 1102 | case LambdaCaptureInitKind::CopyInit: | |||
| 1103 | InitStyle = VarDecl::CInit; | |||
| 1104 | break; | |||
| 1105 | case LambdaCaptureInitKind::DirectInit: | |||
| 1106 | InitStyle = VarDecl::CallInit; | |||
| 1107 | break; | |||
| 1108 | case LambdaCaptureInitKind::ListInit: | |||
| 1109 | InitStyle = VarDecl::ListInit; | |||
| 1110 | break; | |||
| 1111 | } | |||
| 1112 | Var = createLambdaInitCaptureVarDecl(C->Loc, C->InitCaptureType.get(), | |||
| 1113 | C->EllipsisLoc, C->Id, InitStyle, | |||
| 1114 | C->Init.get(), Method); | |||
| 1115 | assert(Var && "createLambdaInitCaptureVarDecl returned a null VarDecl?")(static_cast <bool> (Var && "createLambdaInitCaptureVarDecl returned a null VarDecl?" ) ? void (0) : __assert_fail ("Var && \"createLambdaInitCaptureVarDecl returned a null VarDecl?\"" , "clang/lib/Sema/SemaLambda.cpp", 1115, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1116 | if (auto *V = dyn_cast<VarDecl>(Var)) | |||
| 1117 | CheckShadow(CurrentScope, V); | |||
| 1118 | PushOnScopeChains(Var, CurrentScope, false); | |||
| 1119 | } else { | |||
| 1120 | assert(C->InitKind == LambdaCaptureInitKind::NoInit &&(static_cast <bool> (C->InitKind == LambdaCaptureInitKind ::NoInit && "init capture has valid but null init?") ? void (0) : __assert_fail ("C->InitKind == LambdaCaptureInitKind::NoInit && \"init capture has valid but null init?\"" , "clang/lib/Sema/SemaLambda.cpp", 1121, __extension__ __PRETTY_FUNCTION__ )) | |||
| 1121 | "init capture has valid but null init?")(static_cast <bool> (C->InitKind == LambdaCaptureInitKind ::NoInit && "init capture has valid but null init?") ? void (0) : __assert_fail ("C->InitKind == LambdaCaptureInitKind::NoInit && \"init capture has valid but null init?\"" , "clang/lib/Sema/SemaLambda.cpp", 1121, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1122 | ||||
| 1123 | // C++11 [expr.prim.lambda]p8: | |||
| 1124 | // If a lambda-capture includes a capture-default that is &, the | |||
| 1125 | // identifiers in the lambda-capture shall not be preceded by &. | |||
| 1126 | // If a lambda-capture includes a capture-default that is =, [...] | |||
| 1127 | // each identifier it contains shall be preceded by &. | |||
| 1128 | if (C->Kind == LCK_ByRef && Intro.Default == LCD_ByRef) { | |||
| 1129 | Diag(C->Loc, diag::err_reference_capture_with_reference_default) | |||
| 1130 | << FixItHint::CreateRemoval( | |||
| 1131 | SourceRange(getLocForEndOfToken(PrevCaptureLoc), C->Loc)); | |||
| 1132 | continue; | |||
| 1133 | } else if (C->Kind == LCK_ByCopy && Intro.Default == LCD_ByCopy) { | |||
| 1134 | Diag(C->Loc, diag::err_copy_capture_with_copy_default) | |||
| 1135 | << FixItHint::CreateRemoval( | |||
| 1136 | SourceRange(getLocForEndOfToken(PrevCaptureLoc), C->Loc)); | |||
| 1137 | continue; | |||
| 1138 | } | |||
| 1139 | ||||
| 1140 | // C++11 [expr.prim.lambda]p10: | |||
| 1141 | // The identifiers in a capture-list are looked up using the usual | |||
| 1142 | // rules for unqualified name lookup (3.4.1) | |||
| 1143 | DeclarationNameInfo Name(C->Id, C->Loc); | |||
| 1144 | LookupResult R(*this, Name, LookupOrdinaryName); | |||
| 1145 | LookupName(R, CurScope); | |||
| 1146 | if (R.isAmbiguous()) | |||
| 1147 | continue; | |||
| 1148 | if (R.empty()) { | |||
| 1149 | // FIXME: Disable corrections that would add qualification? | |||
| 1150 | CXXScopeSpec ScopeSpec; | |||
| 1151 | DeclFilterCCC<VarDecl> Validator{}; | |||
| 1152 | if (DiagnoseEmptyLookup(CurScope, ScopeSpec, R, Validator)) | |||
| 1153 | continue; | |||
| 1154 | } | |||
| 1155 | ||||
| 1156 | if (auto *BD = R.getAsSingle<BindingDecl>()) | |||
| 1157 | Var = BD; | |||
| 1158 | else | |||
| 1159 | Var = R.getAsSingle<VarDecl>(); | |||
| 1160 | if (Var && DiagnoseUseOfDecl(Var, C->Loc)) | |||
| 1161 | continue; | |||
| 1162 | } | |||
| 1163 | ||||
| 1164 | // C++11 [expr.prim.lambda]p10: | |||
| 1165 | // [...] each such lookup shall find a variable with automatic storage | |||
| 1166 | // duration declared in the reaching scope of the local lambda expression. | |||
| 1167 | // Note that the 'reaching scope' check happens in tryCaptureVariable(). | |||
| 1168 | if (!Var) { | |||
| 1169 | Diag(C->Loc, diag::err_capture_does_not_name_variable) << C->Id; | |||
| 1170 | continue; | |||
| 1171 | } | |||
| 1172 | ||||
| 1173 | // C++11 [expr.prim.lambda]p8: | |||
| 1174 | // An identifier or this shall not appear more than once in a | |||
| 1175 | // lambda-capture. | |||
| 1176 | if (auto [It, Inserted] = CaptureNames.insert(std::pair{C->Id, Var}); | |||
| 1177 | !Inserted) { | |||
| 1178 | if (C->InitKind == LambdaCaptureInitKind::NoInit && | |||
| 1179 | !Var->isInitCapture()) { | |||
| 1180 | Diag(C->Loc, diag::err_capture_more_than_once) | |||
| 1181 | << C->Id << It->second->getBeginLoc() | |||
| 1182 | << FixItHint::CreateRemoval( | |||
| 1183 | SourceRange(getLocForEndOfToken(PrevCaptureLoc), C->Loc)); | |||
| 1184 | } else | |||
| 1185 | // Previous capture captured something different (one or both was | |||
| 1186 | // an init-capture): no fixit. | |||
| 1187 | Diag(C->Loc, diag::err_capture_more_than_once) << C->Id; | |||
| 1188 | continue; | |||
| 1189 | } | |||
| 1190 | ||||
| 1191 | // Ignore invalid decls; they'll just confuse the code later. | |||
| 1192 | if (Var->isInvalidDecl()) | |||
| 1193 | continue; | |||
| 1194 | ||||
| 1195 | VarDecl *Underlying = Var->getPotentiallyDecomposedVarDecl(); | |||
| 1196 | ||||
| 1197 | if (!Underlying->hasLocalStorage()) { | |||
| 1198 | Diag(C->Loc, diag::err_capture_non_automatic_variable) << C->Id; | |||
| 1199 | Diag(Var->getLocation(), diag::note_previous_decl) << C->Id; | |||
| 1200 | continue; | |||
| 1201 | } | |||
| 1202 | ||||
| 1203 | // C++11 [expr.prim.lambda]p23: | |||
| 1204 | // A capture followed by an ellipsis is a pack expansion (14.5.3). | |||
| 1205 | SourceLocation EllipsisLoc; | |||
| 1206 | if (C->EllipsisLoc.isValid()) { | |||
| 1207 | if (Var->isParameterPack()) { | |||
| 1208 | EllipsisLoc = C->EllipsisLoc; | |||
| 1209 | } else { | |||
| 1210 | Diag(C->EllipsisLoc, diag::err_pack_expansion_without_parameter_packs) | |||
| 1211 | << (C->Init.isUsable() ? C->Init.get()->getSourceRange() | |||
| 1212 | : SourceRange(C->Loc)); | |||
| 1213 | ||||
| 1214 | // Just ignore the ellipsis. | |||
| 1215 | } | |||
| 1216 | } else if (Var->isParameterPack()) { | |||
| 1217 | ContainsUnexpandedParameterPack = true; | |||
| 1218 | } | |||
| 1219 | ||||
| 1220 | if (C->Init.isUsable()) { | |||
| 1221 | addInitCapture(LSI, cast<VarDecl>(Var), C->Kind == LCK_ByRef); | |||
| 1222 | PushOnScopeChains(Var, CurScope, false); | |||
| 1223 | } else { | |||
| 1224 | TryCaptureKind Kind = C->Kind == LCK_ByRef ? TryCapture_ExplicitByRef | |||
| 1225 | : TryCapture_ExplicitByVal; | |||
| 1226 | tryCaptureVariable(Var, C->Loc, Kind, EllipsisLoc); | |||
| 1227 | } | |||
| 1228 | if (!LSI->Captures.empty()) | |||
| 1229 | LSI->ExplicitCaptureRanges[LSI->Captures.size() - 1] = C->ExplicitRange; | |||
| 1230 | } | |||
| 1231 | finishLambdaExplicitCaptures(LSI); | |||
| 1232 | LSI->ContainsUnexpandedParameterPack |= ContainsUnexpandedParameterPack; | |||
| 1233 | PopDeclContext(); | |||
| 1234 | } | |||
| 1235 | ||||
| 1236 | void Sema::ActOnLambdaClosureQualifiers(LambdaIntroducer &Intro, | |||
| 1237 | SourceLocation MutableLoc) { | |||
| 1238 | ||||
| 1239 | LambdaScopeInfo *LSI = getCurrentLambdaScopeUnsafe(*this); | |||
| 1240 | LSI->Mutable = MutableLoc.isValid(); | |||
| 1241 | ContextRAII Context(*this, LSI->CallOperator, /*NewThisContext*/ false); | |||
| 1242 | ||||
| 1243 | // C++11 [expr.prim.lambda]p9: | |||
| 1244 | // A lambda-expression whose smallest enclosing scope is a block scope is a | |||
| 1245 | // local lambda expression; any other lambda expression shall not have a | |||
| 1246 | // capture-default or simple-capture in its lambda-introducer. | |||
| 1247 | // | |||
| 1248 | // For simple-captures, this is covered by the check below that any named | |||
| 1249 | // entity is a variable that can be captured. | |||
| 1250 | // | |||
| 1251 | // For DR1632, we also allow a capture-default in any context where we can | |||
| 1252 | // odr-use 'this' (in particular, in a default initializer for a non-static | |||
| 1253 | // data member). | |||
| 1254 | if (Intro.Default != LCD_None && | |||
| 1255 | !LSI->Lambda->getParent()->isFunctionOrMethod() && | |||
| 1256 | (getCurrentThisType().isNull() || | |||
| 1257 | CheckCXXThisCapture(SourceLocation(), /*Explicit=*/true, | |||
| 1258 | /*BuildAndDiagnose=*/false))) | |||
| 1259 | Diag(Intro.DefaultLoc, diag::err_capture_default_non_local); | |||
| 1260 | } | |||
| 1261 | ||||
| 1262 | void Sema::ActOnLambdaClosureParameters( | |||
| 1263 | Scope *LambdaScope, MutableArrayRef<DeclaratorChunk::ParamInfo> Params) { | |||
| 1264 | LambdaScopeInfo *LSI = getCurrentLambdaScopeUnsafe(*this); | |||
| 1265 | PushDeclContext(LambdaScope, LSI->CallOperator); | |||
| 1266 | ||||
| 1267 | for (const DeclaratorChunk::ParamInfo &P : Params) { | |||
| 1268 | auto *Param = cast<ParmVarDecl>(P.Param); | |||
| 1269 | Param->setOwningFunction(LSI->CallOperator); | |||
| 1270 | if (Param->getIdentifier()) | |||
| 1271 | PushOnScopeChains(Param, LambdaScope, false); | |||
| 1272 | } | |||
| 1273 | ||||
| 1274 | LSI->AfterParameterList = true; | |||
| 1275 | } | |||
| 1276 | ||||
| 1277 | void Sema::ActOnStartOfLambdaDefinition(LambdaIntroducer &Intro, | |||
| 1278 | Declarator &ParamInfo, | |||
| 1279 | const DeclSpec &DS) { | |||
| 1280 | ||||
| 1281 | LambdaScopeInfo *LSI = getCurrentLambdaScopeUnsafe(*this); | |||
| 1282 | LSI->CallOperator->setConstexprKind(DS.getConstexprSpecifier()); | |||
| 1283 | ||||
| 1284 | SmallVector<ParmVarDecl *, 8> Params; | |||
| 1285 | bool ExplicitResultType; | |||
| 1286 | ||||
| 1287 | SourceLocation TypeLoc, CallOperatorLoc; | |||
| 1288 | if (ParamInfo.getNumTypeObjects() == 0) { | |||
| ||||
| 1289 | CallOperatorLoc = TypeLoc = Intro.Range.getEnd(); | |||
| 1290 | } else { | |||
| 1291 | unsigned Index; | |||
| 1292 | ParamInfo.isFunctionDeclarator(Index); | |||
| 1293 | const auto &Object = ParamInfo.getTypeObject(Index); | |||
| ||||
| 1294 | TypeLoc = | |||
| 1295 | Object.Loc.isValid() ? Object.Loc : ParamInfo.getSourceRange().getEnd(); | |||
| 1296 | CallOperatorLoc = ParamInfo.getSourceRange().getEnd(); | |||
| 1297 | } | |||
| 1298 | ||||
| 1299 | CXXRecordDecl *Class = LSI->Lambda; | |||
| 1300 | CXXMethodDecl *Method = LSI->CallOperator; | |||
| 1301 | ||||
| 1302 | TypeSourceInfo *MethodTyInfo = getLambdaType( | |||
| 1303 | *this, Intro, ParamInfo, getCurScope(), TypeLoc, ExplicitResultType); | |||
| 1304 | ||||
| 1305 | LSI->ExplicitParams = ParamInfo.getNumTypeObjects() != 0; | |||
| 1306 | ||||
| 1307 | if (ParamInfo.isFunctionDeclarator() != 0 && | |||
| 1308 | !FTIHasSingleVoidParameter(ParamInfo.getFunctionTypeInfo())) { | |||
| 1309 | const auto &FTI = ParamInfo.getFunctionTypeInfo(); | |||
| 1310 | Params.reserve(Params.size()); | |||
| 1311 | for (unsigned I = 0; I < FTI.NumParams; ++I) { | |||
| 1312 | auto *Param = cast<ParmVarDecl>(FTI.Params[I].Param); | |||
| 1313 | Param->setScopeInfo(0, Params.size()); | |||
| 1314 | Params.push_back(Param); | |||
| 1315 | } | |||
| 1316 | } | |||
| 1317 | ||||
| 1318 | bool IsLambdaStatic = | |||
| 1319 | ParamInfo.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static; | |||
| 1320 | ||||
| 1321 | CompleteLambdaCallOperator( | |||
| 1322 | Method, Intro.Range.getBegin(), CallOperatorLoc, | |||
| 1323 | ParamInfo.getTrailingRequiresClause(), MethodTyInfo, | |||
| 1324 | ParamInfo.getDeclSpec().getConstexprSpecifier(), | |||
| 1325 | IsLambdaStatic ? SC_Static : SC_None, Params, ExplicitResultType); | |||
| 1326 | ||||
| 1327 | ContextRAII ManglingContext(*this, Class->getDeclContext()); | |||
| 1328 | ||||
| 1329 | CheckCXXDefaultArguments(Method); | |||
| 1330 | ||||
| 1331 | // This represents the function body for the lambda function, check if we | |||
| 1332 | // have to apply optnone due to a pragma. | |||
| 1333 | AddRangeBasedOptnone(Method); | |||
| 1334 | ||||
| 1335 | // code_seg attribute on lambda apply to the method. | |||
| 1336 | if (Attr *A = getImplicitCodeSegOrSectionAttrForFunction( | |||
| 1337 | Method, /*IsDefinition=*/true)) | |||
| 1338 | Method->addAttr(A); | |||
| 1339 | ||||
| 1340 | // Attributes on the lambda apply to the method. | |||
| 1341 | ProcessDeclAttributes(CurScope, Method, ParamInfo); | |||
| 1342 | ||||
| 1343 | // CUDA lambdas get implicit host and device attributes. | |||
| 1344 | if (getLangOpts().CUDA) | |||
| 1345 | CUDASetLambdaAttrs(Method); | |||
| 1346 | ||||
| 1347 | // OpenMP lambdas might get assumumption attributes. | |||
| 1348 | if (LangOpts.OpenMP) | |||
| 1349 | ActOnFinishedFunctionDefinitionInOpenMPAssumeScope(Method); | |||
| 1350 | ||||
| 1351 | handleLambdaNumbering(Class, Method); | |||
| 1352 | ||||
| 1353 | ManglingContext.pop(); | |||
| 1354 | ||||
| 1355 | for (auto &&C : LSI->Captures) { | |||
| 1356 | if (!C.isVariableCapture()) | |||
| 1357 | continue; | |||
| 1358 | ValueDecl *Var = C.getVariable(); | |||
| 1359 | if (Var && Var->isInitCapture()) { | |||
| 1360 | PushOnScopeChains(Var, CurScope, false); | |||
| 1361 | } | |||
| 1362 | } | |||
| 1363 | ||||
| 1364 | auto CheckRedefinition = [&](ParmVarDecl *Param) { | |||
| 1365 | for (const auto &Capture : Intro.Captures) { | |||
| 1366 | if (Capture.Id == Param->getIdentifier()) { | |||
| 1367 | Diag(Param->getLocation(), diag::err_parameter_shadow_capture); | |||
| 1368 | Diag(Capture.Loc, diag::note_var_explicitly_captured_here) | |||
| 1369 | << Capture.Id << true; | |||
| 1370 | return false; | |||
| 1371 | } | |||
| 1372 | } | |||
| 1373 | return true; | |||
| 1374 | }; | |||
| 1375 | ||||
| 1376 | for (ParmVarDecl *P : Params) { | |||
| 1377 | if (!P->getIdentifier()) | |||
| 1378 | continue; | |||
| 1379 | if (CheckRedefinition(P)) | |||
| 1380 | CheckShadow(CurScope, P); | |||
| 1381 | PushOnScopeChains(P, CurScope); | |||
| 1382 | } | |||
| 1383 | ||||
| 1384 | // Enter a new evaluation context to insulate the lambda from any | |||
| 1385 | // cleanups from the enclosing full-expression. | |||
| 1386 | PushExpressionEvaluationContext( | |||
| 1387 | LSI->CallOperator->isConsteval() | |||
| 1388 | ? ExpressionEvaluationContext::ImmediateFunctionContext | |||
| 1389 | : ExpressionEvaluationContext::PotentiallyEvaluated); | |||
| 1390 | } | |||
| 1391 | ||||
| 1392 | void Sema::ActOnLambdaError(SourceLocation StartLoc, Scope *CurScope, | |||
| 1393 | bool IsInstantiation) { | |||
| 1394 | LambdaScopeInfo *LSI = cast<LambdaScopeInfo>(FunctionScopes.back()); | |||
| 1395 | ||||
| 1396 | // Leave the expression-evaluation context. | |||
| 1397 | DiscardCleanupsInEvaluationContext(); | |||
| 1398 | PopExpressionEvaluationContext(); | |||
| 1399 | ||||
| 1400 | // Leave the context of the lambda. | |||
| 1401 | if (!IsInstantiation) | |||
| 1402 | PopDeclContext(); | |||
| 1403 | ||||
| 1404 | // Finalize the lambda. | |||
| 1405 | CXXRecordDecl *Class = LSI->Lambda; | |||
| 1406 | Class->setInvalidDecl(); | |||
| 1407 | SmallVector<Decl*, 4> Fields(Class->fields()); | |||
| 1408 | ActOnFields(nullptr, Class->getLocation(), Class, Fields, SourceLocation(), | |||
| 1409 | SourceLocation(), ParsedAttributesView()); | |||
| 1410 | CheckCompletedCXXClass(nullptr, Class); | |||
| 1411 | ||||
| 1412 | PopFunctionScopeInfo(); | |||
| 1413 | } | |||
| 1414 | ||||
| 1415 | template <typename Func> | |||
| 1416 | static void repeatForLambdaConversionFunctionCallingConvs( | |||
| 1417 | Sema &S, const FunctionProtoType &CallOpProto, Func F) { | |||
| 1418 | CallingConv DefaultFree = S.Context.getDefaultCallingConvention( | |||
| 1419 | CallOpProto.isVariadic(), /*IsCXXMethod=*/false); | |||
| 1420 | CallingConv DefaultMember = S.Context.getDefaultCallingConvention( | |||
| 1421 | CallOpProto.isVariadic(), /*IsCXXMethod=*/true); | |||
| 1422 | CallingConv CallOpCC = CallOpProto.getCallConv(); | |||
| 1423 | ||||
| 1424 | /// Implement emitting a version of the operator for many of the calling | |||
| 1425 | /// conventions for MSVC, as described here: | |||
| 1426 | /// https://devblogs.microsoft.com/oldnewthing/20150220-00/?p=44623. | |||
| 1427 | /// Experimentally, we determined that cdecl, stdcall, fastcall, and | |||
| 1428 | /// vectorcall are generated by MSVC when it is supported by the target. | |||
| 1429 | /// Additionally, we are ensuring that the default-free/default-member and | |||
| 1430 | /// call-operator calling convention are generated as well. | |||
| 1431 | /// NOTE: We intentionally generate a 'thiscall' on Win32 implicitly from the | |||
| 1432 | /// 'member default', despite MSVC not doing so. We do this in order to ensure | |||
| 1433 | /// that someone who intentionally places 'thiscall' on the lambda call | |||
| 1434 | /// operator will still get that overload, since we don't have the a way of | |||
| 1435 | /// detecting the attribute by the time we get here. | |||
| 1436 | if (S.getLangOpts().MSVCCompat) { | |||
| 1437 | CallingConv Convs[] = { | |||
| 1438 | CC_C, CC_X86StdCall, CC_X86FastCall, CC_X86VectorCall, | |||
| 1439 | DefaultFree, DefaultMember, CallOpCC}; | |||
| 1440 | llvm::sort(Convs); | |||
| 1441 | llvm::iterator_range<CallingConv *> Range( | |||
| 1442 | std::begin(Convs), std::unique(std::begin(Convs), std::end(Convs))); | |||
| 1443 | const TargetInfo &TI = S.getASTContext().getTargetInfo(); | |||
| 1444 | ||||
| 1445 | for (CallingConv C : Range) { | |||
| 1446 | if (TI.checkCallingConvention(C) == TargetInfo::CCCR_OK) | |||
| 1447 | F(C); | |||
| 1448 | } | |||
| 1449 | return; | |||
| 1450 | } | |||
| 1451 | ||||
| 1452 | if (CallOpCC == DefaultMember && DefaultMember != DefaultFree) { | |||
| 1453 | F(DefaultFree); | |||
| 1454 | F(DefaultMember); | |||
| 1455 | } else { | |||
| 1456 | F(CallOpCC); | |||
| 1457 | } | |||
| 1458 | } | |||
| 1459 | ||||
| 1460 | // Returns the 'standard' calling convention to be used for the lambda | |||
| 1461 | // conversion function, that is, the 'free' function calling convention unless | |||
| 1462 | // it is overridden by a non-default calling convention attribute. | |||
| 1463 | static CallingConv | |||
| 1464 | getLambdaConversionFunctionCallConv(Sema &S, | |||
| 1465 | const FunctionProtoType *CallOpProto) { | |||
| 1466 | CallingConv DefaultFree = S.Context.getDefaultCallingConvention( | |||
| 1467 | CallOpProto->isVariadic(), /*IsCXXMethod=*/false); | |||
| 1468 | CallingConv DefaultMember = S.Context.getDefaultCallingConvention( | |||
| 1469 | CallOpProto->isVariadic(), /*IsCXXMethod=*/true); | |||
| 1470 | CallingConv CallOpCC = CallOpProto->getCallConv(); | |||
| 1471 | ||||
| 1472 | // If the call-operator hasn't been changed, return both the 'free' and | |||
| 1473 | // 'member' function calling convention. | |||
| 1474 | if (CallOpCC == DefaultMember && DefaultMember != DefaultFree) | |||
| 1475 | return DefaultFree; | |||
| 1476 | return CallOpCC; | |||
| 1477 | } | |||
| 1478 | ||||
| 1479 | QualType Sema::getLambdaConversionFunctionResultType( | |||
| 1480 | const FunctionProtoType *CallOpProto, CallingConv CC) { | |||
| 1481 | const FunctionProtoType::ExtProtoInfo CallOpExtInfo = | |||
| 1482 | CallOpProto->getExtProtoInfo(); | |||
| 1483 | FunctionProtoType::ExtProtoInfo InvokerExtInfo = CallOpExtInfo; | |||
| 1484 | InvokerExtInfo.ExtInfo = InvokerExtInfo.ExtInfo.withCallingConv(CC); | |||
| 1485 | InvokerExtInfo.TypeQuals = Qualifiers(); | |||
| 1486 | assert(InvokerExtInfo.RefQualifier == RQ_None &&(static_cast <bool> (InvokerExtInfo.RefQualifier == RQ_None && "Lambda's call operator should not have a reference qualifier" ) ? void (0) : __assert_fail ("InvokerExtInfo.RefQualifier == RQ_None && \"Lambda's call operator should not have a reference qualifier\"" , "clang/lib/Sema/SemaLambda.cpp", 1487, __extension__ __PRETTY_FUNCTION__ )) | |||
| 1487 | "Lambda's call operator should not have a reference qualifier")(static_cast <bool> (InvokerExtInfo.RefQualifier == RQ_None && "Lambda's call operator should not have a reference qualifier" ) ? void (0) : __assert_fail ("InvokerExtInfo.RefQualifier == RQ_None && \"Lambda's call operator should not have a reference qualifier\"" , "clang/lib/Sema/SemaLambda.cpp", 1487, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1488 | return Context.getFunctionType(CallOpProto->getReturnType(), | |||
| 1489 | CallOpProto->getParamTypes(), InvokerExtInfo); | |||
| 1490 | } | |||
| 1491 | ||||
| 1492 | /// Add a lambda's conversion to function pointer, as described in | |||
| 1493 | /// C++11 [expr.prim.lambda]p6. | |||
| 1494 | static void addFunctionPointerConversion(Sema &S, SourceRange IntroducerRange, | |||
| 1495 | CXXRecordDecl *Class, | |||
| 1496 | CXXMethodDecl *CallOperator, | |||
| 1497 | QualType InvokerFunctionTy) { | |||
| 1498 | // This conversion is explicitly disabled if the lambda's function has | |||
| 1499 | // pass_object_size attributes on any of its parameters. | |||
| 1500 | auto HasPassObjectSizeAttr = [](const ParmVarDecl *P) { | |||
| 1501 | return P->hasAttr<PassObjectSizeAttr>(); | |||
| 1502 | }; | |||
| 1503 | if (llvm::any_of(CallOperator->parameters(), HasPassObjectSizeAttr)) | |||
| 1504 | return; | |||
| 1505 | ||||
| 1506 | // Add the conversion to function pointer. | |||
| 1507 | QualType PtrToFunctionTy = S.Context.getPointerType(InvokerFunctionTy); | |||
| 1508 | ||||
| 1509 | // Create the type of the conversion function. | |||
| 1510 | FunctionProtoType::ExtProtoInfo ConvExtInfo( | |||
| 1511 | S.Context.getDefaultCallingConvention( | |||
| 1512 | /*IsVariadic=*/false, /*IsCXXMethod=*/true)); | |||
| 1513 | // The conversion function is always const and noexcept. | |||
| 1514 | ConvExtInfo.TypeQuals = Qualifiers(); | |||
| 1515 | ConvExtInfo.TypeQuals.addConst(); | |||
| 1516 | ConvExtInfo.ExceptionSpec.Type = EST_BasicNoexcept; | |||
| 1517 | QualType ConvTy = | |||
| 1518 | S.Context.getFunctionType(PtrToFunctionTy, std::nullopt, ConvExtInfo); | |||
| 1519 | ||||
| 1520 | SourceLocation Loc = IntroducerRange.getBegin(); | |||
| 1521 | DeclarationName ConversionName | |||
| 1522 | = S.Context.DeclarationNames.getCXXConversionFunctionName( | |||
| 1523 | S.Context.getCanonicalType(PtrToFunctionTy)); | |||
| 1524 | // Construct a TypeSourceInfo for the conversion function, and wire | |||
| 1525 | // all the parameters appropriately for the FunctionProtoTypeLoc | |||
| 1526 | // so that everything works during transformation/instantiation of | |||
| 1527 | // generic lambdas. | |||
| 1528 | // The main reason for wiring up the parameters of the conversion | |||
| 1529 | // function with that of the call operator is so that constructs | |||
| 1530 | // like the following work: | |||
| 1531 | // auto L = [](auto b) { <-- 1 | |||
| 1532 | // return [](auto a) -> decltype(a) { <-- 2 | |||
| 1533 | // return a; | |||
| 1534 | // }; | |||
| 1535 | // }; | |||
| 1536 | // int (*fp)(int) = L(5); | |||
| 1537 | // Because the trailing return type can contain DeclRefExprs that refer | |||
| 1538 | // to the original call operator's variables, we hijack the call | |||
| 1539 | // operators ParmVarDecls below. | |||
| 1540 | TypeSourceInfo *ConvNamePtrToFunctionTSI = | |||
| 1541 | S.Context.getTrivialTypeSourceInfo(PtrToFunctionTy, Loc); | |||
| 1542 | DeclarationNameLoc ConvNameLoc = | |||
| 1543 | DeclarationNameLoc::makeNamedTypeLoc(ConvNamePtrToFunctionTSI); | |||
| 1544 | ||||
| 1545 | // The conversion function is a conversion to a pointer-to-function. | |||
| 1546 | TypeSourceInfo *ConvTSI = S.Context.getTrivialTypeSourceInfo(ConvTy, Loc); | |||
| 1547 | FunctionProtoTypeLoc ConvTL = | |||
| 1548 | ConvTSI->getTypeLoc().getAs<FunctionProtoTypeLoc>(); | |||
| 1549 | // Get the result of the conversion function which is a pointer-to-function. | |||
| 1550 | PointerTypeLoc PtrToFunctionTL = | |||
| 1551 | ConvTL.getReturnLoc().getAs<PointerTypeLoc>(); | |||
| 1552 | // Do the same for the TypeSourceInfo that is used to name the conversion | |||
| 1553 | // operator. | |||
| 1554 | PointerTypeLoc ConvNamePtrToFunctionTL = | |||
| 1555 | ConvNamePtrToFunctionTSI->getTypeLoc().getAs<PointerTypeLoc>(); | |||
| 1556 | ||||
| 1557 | // Get the underlying function types that the conversion function will | |||
| 1558 | // be converting to (should match the type of the call operator). | |||
| 1559 | FunctionProtoTypeLoc CallOpConvTL = | |||
| 1560 | PtrToFunctionTL.getPointeeLoc().getAs<FunctionProtoTypeLoc>(); | |||
| 1561 | FunctionProtoTypeLoc CallOpConvNameTL = | |||
| 1562 | ConvNamePtrToFunctionTL.getPointeeLoc().getAs<FunctionProtoTypeLoc>(); | |||
| 1563 | ||||
| 1564 | // Wire up the FunctionProtoTypeLocs with the call operator's parameters. | |||
| 1565 | // These parameter's are essentially used to transform the name and | |||
| 1566 | // the type of the conversion operator. By using the same parameters | |||
| 1567 | // as the call operator's we don't have to fix any back references that | |||
| 1568 | // the trailing return type of the call operator's uses (such as | |||
| 1569 | // decltype(some_type<decltype(a)>::type{} + decltype(a){}) etc.) | |||
| 1570 | // - we can simply use the return type of the call operator, and | |||
| 1571 | // everything should work. | |||
| 1572 | SmallVector<ParmVarDecl *, 4> InvokerParams; | |||
| 1573 | for (unsigned I = 0, N = CallOperator->getNumParams(); I != N; ++I) { | |||
| 1574 | ParmVarDecl *From = CallOperator->getParamDecl(I); | |||
| 1575 | ||||
| 1576 | InvokerParams.push_back(ParmVarDecl::Create( | |||
| 1577 | S.Context, | |||
| 1578 | // Temporarily add to the TU. This is set to the invoker below. | |||
| 1579 | S.Context.getTranslationUnitDecl(), From->getBeginLoc(), | |||
| 1580 | From->getLocation(), From->getIdentifier(), From->getType(), | |||
| 1581 | From->getTypeSourceInfo(), From->getStorageClass(), | |||
| 1582 | /*DefArg=*/nullptr)); | |||
| 1583 | CallOpConvTL.setParam(I, From); | |||
| 1584 | CallOpConvNameTL.setParam(I, From); | |||
| 1585 | } | |||
| 1586 | ||||
| 1587 | CXXConversionDecl *Conversion = CXXConversionDecl::Create( | |||
| 1588 | S.Context, Class, Loc, | |||
| 1589 | DeclarationNameInfo(ConversionName, Loc, ConvNameLoc), ConvTy, ConvTSI, | |||
| 1590 | S.getCurFPFeatures().isFPConstrained(), | |||
| 1591 | /*isInline=*/true, ExplicitSpecifier(), | |||
| 1592 | S.getLangOpts().CPlusPlus17 ? ConstexprSpecKind::Constexpr | |||
| 1593 | : ConstexprSpecKind::Unspecified, | |||
| 1594 | CallOperator->getBody()->getEndLoc()); | |||
| 1595 | Conversion->setAccess(AS_public); | |||
| 1596 | Conversion->setImplicit(true); | |||
| 1597 | ||||
| 1598 | if (Class->isGenericLambda()) { | |||
| 1599 | // Create a template version of the conversion operator, using the template | |||
| 1600 | // parameter list of the function call operator. | |||
| 1601 | FunctionTemplateDecl *TemplateCallOperator = | |||
| 1602 | CallOperator->getDescribedFunctionTemplate(); | |||
| 1603 | FunctionTemplateDecl *ConversionTemplate = | |||
| 1604 | FunctionTemplateDecl::Create(S.Context, Class, | |||
| 1605 | Loc, ConversionName, | |||
| 1606 | TemplateCallOperator->getTemplateParameters(), | |||
| 1607 | Conversion); | |||
| 1608 | ConversionTemplate->setAccess(AS_public); | |||
| 1609 | ConversionTemplate->setImplicit(true); | |||
| 1610 | Conversion->setDescribedFunctionTemplate(ConversionTemplate); | |||
| 1611 | Class->addDecl(ConversionTemplate); | |||
| 1612 | } else | |||
| 1613 | Class->addDecl(Conversion); | |||
| 1614 | ||||
| 1615 | // If the lambda is not static, we need to add a static member | |||
| 1616 | // function that will be the result of the conversion with a | |||
| 1617 | // certain unique ID. | |||
| 1618 | // When it is static we just return the static call operator instead. | |||
| 1619 | if (CallOperator->isInstance()) { | |||
| 1620 | DeclarationName InvokerName = | |||
| 1621 | &S.Context.Idents.get(getLambdaStaticInvokerName()); | |||
| 1622 | // FIXME: Instead of passing in the CallOperator->getTypeSourceInfo() | |||
| 1623 | // we should get a prebuilt TrivialTypeSourceInfo from Context | |||
| 1624 | // using FunctionTy & Loc and get its TypeLoc as a FunctionProtoTypeLoc | |||
| 1625 | // then rewire the parameters accordingly, by hoisting up the InvokeParams | |||
| 1626 | // loop below and then use its Params to set Invoke->setParams(...) below. | |||
| 1627 | // This would avoid the 'const' qualifier of the calloperator from | |||
| 1628 | // contaminating the type of the invoker, which is currently adjusted | |||
| 1629 | // in SemaTemplateDeduction.cpp:DeduceTemplateArguments. Fixing the | |||
| 1630 | // trailing return type of the invoker would require a visitor to rebuild | |||
| 1631 | // the trailing return type and adjusting all back DeclRefExpr's to refer | |||
| 1632 | // to the new static invoker parameters - not the call operator's. | |||
| 1633 | CXXMethodDecl *Invoke = CXXMethodDecl::Create( | |||
| 1634 | S.Context, Class, Loc, DeclarationNameInfo(InvokerName, Loc), | |||
| 1635 | InvokerFunctionTy, CallOperator->getTypeSourceInfo(), SC_Static, | |||
| 1636 | S.getCurFPFeatures().isFPConstrained(), | |||
| 1637 | /*isInline=*/true, CallOperator->getConstexprKind(), | |||
| 1638 | CallOperator->getBody()->getEndLoc()); | |||
| 1639 | for (unsigned I = 0, N = CallOperator->getNumParams(); I != N; ++I) | |||
| 1640 | InvokerParams[I]->setOwningFunction(Invoke); | |||
| 1641 | Invoke->setParams(InvokerParams); | |||
| 1642 | Invoke->setAccess(AS_private); | |||
| 1643 | Invoke->setImplicit(true); | |||
| 1644 | if (Class->isGenericLambda()) { | |||
| 1645 | FunctionTemplateDecl *TemplateCallOperator = | |||
| 1646 | CallOperator->getDescribedFunctionTemplate(); | |||
| 1647 | FunctionTemplateDecl *StaticInvokerTemplate = | |||
| 1648 | FunctionTemplateDecl::Create( | |||
| 1649 | S.Context, Class, Loc, InvokerName, | |||
| 1650 | TemplateCallOperator->getTemplateParameters(), Invoke); | |||
| 1651 | StaticInvokerTemplate->setAccess(AS_private); | |||
| 1652 | StaticInvokerTemplate->setImplicit(true); | |||
| 1653 | Invoke->setDescribedFunctionTemplate(StaticInvokerTemplate); | |||
| 1654 | Class->addDecl(StaticInvokerTemplate); | |||
| 1655 | } else | |||
| 1656 | Class->addDecl(Invoke); | |||
| 1657 | } | |||
| 1658 | } | |||
| 1659 | ||||
| 1660 | /// Add a lambda's conversion to function pointers, as described in | |||
| 1661 | /// C++11 [expr.prim.lambda]p6. Note that in most cases, this should emit only a | |||
| 1662 | /// single pointer conversion. In the event that the default calling convention | |||
| 1663 | /// for free and member functions is different, it will emit both conventions. | |||
| 1664 | static void addFunctionPointerConversions(Sema &S, SourceRange IntroducerRange, | |||
| 1665 | CXXRecordDecl *Class, | |||
| 1666 | CXXMethodDecl *CallOperator) { | |||
| 1667 | const FunctionProtoType *CallOpProto = | |||
| 1668 | CallOperator->getType()->castAs<FunctionProtoType>(); | |||
| 1669 | ||||
| 1670 | repeatForLambdaConversionFunctionCallingConvs( | |||
| 1671 | S, *CallOpProto, [&](CallingConv CC) { | |||
| 1672 | QualType InvokerFunctionTy = | |||
| 1673 | S.getLambdaConversionFunctionResultType(CallOpProto, CC); | |||
| 1674 | addFunctionPointerConversion(S, IntroducerRange, Class, CallOperator, | |||
| 1675 | InvokerFunctionTy); | |||
| 1676 | }); | |||
| 1677 | } | |||
| 1678 | ||||
| 1679 | /// Add a lambda's conversion to block pointer. | |||
| 1680 | static void addBlockPointerConversion(Sema &S, | |||
| 1681 | SourceRange IntroducerRange, | |||
| 1682 | CXXRecordDecl *Class, | |||
| 1683 | CXXMethodDecl *CallOperator) { | |||
| 1684 | const FunctionProtoType *CallOpProto = | |||
| 1685 | CallOperator->getType()->castAs<FunctionProtoType>(); | |||
| 1686 | QualType FunctionTy = S.getLambdaConversionFunctionResultType( | |||
| 1687 | CallOpProto, getLambdaConversionFunctionCallConv(S, CallOpProto)); | |||
| 1688 | QualType BlockPtrTy = S.Context.getBlockPointerType(FunctionTy); | |||
| 1689 | ||||
| 1690 | FunctionProtoType::ExtProtoInfo ConversionEPI( | |||
| 1691 | S.Context.getDefaultCallingConvention( | |||
| 1692 | /*IsVariadic=*/false, /*IsCXXMethod=*/true)); | |||
| 1693 | ConversionEPI.TypeQuals = Qualifiers(); | |||
| 1694 | ConversionEPI.TypeQuals.addConst(); | |||
| 1695 | QualType ConvTy = | |||
| 1696 | S.Context.getFunctionType(BlockPtrTy, std::nullopt, ConversionEPI); | |||
| 1697 | ||||
| 1698 | SourceLocation Loc = IntroducerRange.getBegin(); | |||
| 1699 | DeclarationName Name | |||
| 1700 | = S.Context.DeclarationNames.getCXXConversionFunctionName( | |||
| 1701 | S.Context.getCanonicalType(BlockPtrTy)); | |||
| 1702 | DeclarationNameLoc NameLoc = DeclarationNameLoc::makeNamedTypeLoc( | |||
| 1703 | S.Context.getTrivialTypeSourceInfo(BlockPtrTy, Loc)); | |||
| 1704 | CXXConversionDecl *Conversion = CXXConversionDecl::Create( | |||
| 1705 | S.Context, Class, Loc, DeclarationNameInfo(Name, Loc, NameLoc), ConvTy, | |||
| 1706 | S.Context.getTrivialTypeSourceInfo(ConvTy, Loc), | |||
| 1707 | S.getCurFPFeatures().isFPConstrained(), | |||
| 1708 | /*isInline=*/true, ExplicitSpecifier(), ConstexprSpecKind::Unspecified, | |||
| 1709 | CallOperator->getBody()->getEndLoc()); | |||
| 1710 | Conversion->setAccess(AS_public); | |||
| 1711 | Conversion->setImplicit(true); | |||
| 1712 | Class->addDecl(Conversion); | |||
| 1713 | } | |||
| 1714 | ||||
| 1715 | ExprResult Sema::BuildCaptureInit(const Capture &Cap, | |||
| 1716 | SourceLocation ImplicitCaptureLoc, | |||
| 1717 | bool IsOpenMPMapping) { | |||
| 1718 | // VLA captures don't have a stored initialization expression. | |||
| 1719 | if (Cap.isVLATypeCapture()) | |||
| 1720 | return ExprResult(); | |||
| 1721 | ||||
| 1722 | // An init-capture is initialized directly from its stored initializer. | |||
| 1723 | if (Cap.isInitCapture()) | |||
| 1724 | return cast<VarDecl>(Cap.getVariable())->getInit(); | |||
| 1725 | ||||
| 1726 | // For anything else, build an initialization expression. For an implicit | |||
| 1727 | // capture, the capture notionally happens at the capture-default, so use | |||
| 1728 | // that location here. | |||
| 1729 | SourceLocation Loc = | |||
| 1730 | ImplicitCaptureLoc.isValid() ? ImplicitCaptureLoc : Cap.getLocation(); | |||
| 1731 | ||||
| 1732 | // C++11 [expr.prim.lambda]p21: | |||
| 1733 | // When the lambda-expression is evaluated, the entities that | |||
| 1734 | // are captured by copy are used to direct-initialize each | |||
| 1735 | // corresponding non-static data member of the resulting closure | |||
| 1736 | // object. (For array members, the array elements are | |||
| 1737 | // direct-initialized in increasing subscript order.) These | |||
| 1738 | // initializations are performed in the (unspecified) order in | |||
| 1739 | // which the non-static data members are declared. | |||
| 1740 | ||||
| 1741 | // C++ [expr.prim.lambda]p12: | |||
| 1742 | // An entity captured by a lambda-expression is odr-used (3.2) in | |||
| 1743 | // the scope containing the lambda-expression. | |||
| 1744 | ExprResult Init; | |||
| 1745 | IdentifierInfo *Name = nullptr; | |||
| 1746 | if (Cap.isThisCapture()) { | |||
| 1747 | QualType ThisTy = getCurrentThisType(); | |||
| 1748 | Expr *This = BuildCXXThisExpr(Loc, ThisTy, ImplicitCaptureLoc.isValid()); | |||
| 1749 | if (Cap.isCopyCapture()) | |||
| 1750 | Init = CreateBuiltinUnaryOp(Loc, UO_Deref, This); | |||
| 1751 | else | |||
| 1752 | Init = This; | |||
| 1753 | } else { | |||
| 1754 | assert(Cap.isVariableCapture() && "unknown kind of capture")(static_cast <bool> (Cap.isVariableCapture() && "unknown kind of capture") ? void (0) : __assert_fail ("Cap.isVariableCapture() && \"unknown kind of capture\"" , "clang/lib/Sema/SemaLambda.cpp", 1754, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1755 | ValueDecl *Var = Cap.getVariable(); | |||
| 1756 | Name = Var->getIdentifier(); | |||
| 1757 | Init = BuildDeclarationNameExpr( | |||
| 1758 | CXXScopeSpec(), DeclarationNameInfo(Var->getDeclName(), Loc), Var); | |||
| 1759 | } | |||
| 1760 | ||||
| 1761 | // In OpenMP, the capture kind doesn't actually describe how to capture: | |||
| 1762 | // variables are "mapped" onto the device in a process that does not formally | |||
| 1763 | // make a copy, even for a "copy capture". | |||
| 1764 | if (IsOpenMPMapping) | |||
| 1765 | return Init; | |||
| 1766 | ||||
| 1767 | if (Init.isInvalid()) | |||
| 1768 | return ExprError(); | |||
| 1769 | ||||
| 1770 | Expr *InitExpr = Init.get(); | |||
| 1771 | InitializedEntity Entity = InitializedEntity::InitializeLambdaCapture( | |||
| 1772 | Name, Cap.getCaptureType(), Loc); | |||
| 1773 | InitializationKind InitKind = | |||
| 1774 | InitializationKind::CreateDirect(Loc, Loc, Loc); | |||
| 1775 | InitializationSequence InitSeq(*this, Entity, InitKind, InitExpr); | |||
| 1776 | return InitSeq.Perform(*this, Entity, InitKind, InitExpr); | |||
| 1777 | } | |||
| 1778 | ||||
| 1779 | ExprResult Sema::ActOnLambdaExpr(SourceLocation StartLoc, Stmt *Body, | |||
| 1780 | Scope *CurScope) { | |||
| 1781 | LambdaScopeInfo LSI = *cast<LambdaScopeInfo>(FunctionScopes.back()); | |||
| 1782 | ActOnFinishFunctionBody(LSI.CallOperator, Body); | |||
| 1783 | return BuildLambdaExpr(StartLoc, Body->getEndLoc(), &LSI); | |||
| 1784 | } | |||
| 1785 | ||||
| 1786 | static LambdaCaptureDefault | |||
| 1787 | mapImplicitCaptureStyle(CapturingScopeInfo::ImplicitCaptureStyle ICS) { | |||
| 1788 | switch (ICS) { | |||
| 1789 | case CapturingScopeInfo::ImpCap_None: | |||
| 1790 | return LCD_None; | |||
| 1791 | case CapturingScopeInfo::ImpCap_LambdaByval: | |||
| 1792 | return LCD_ByCopy; | |||
| 1793 | case CapturingScopeInfo::ImpCap_CapturedRegion: | |||
| 1794 | case CapturingScopeInfo::ImpCap_LambdaByref: | |||
| 1795 | return LCD_ByRef; | |||
| 1796 | case CapturingScopeInfo::ImpCap_Block: | |||
| 1797 | llvm_unreachable("block capture in lambda")::llvm::llvm_unreachable_internal("block capture in lambda", "clang/lib/Sema/SemaLambda.cpp" , 1797); | |||
| 1798 | } | |||
| 1799 | llvm_unreachable("Unknown implicit capture style")::llvm::llvm_unreachable_internal("Unknown implicit capture style" , "clang/lib/Sema/SemaLambda.cpp", 1799); | |||
| 1800 | } | |||
| 1801 | ||||
| 1802 | bool Sema::CaptureHasSideEffects(const Capture &From) { | |||
| 1803 | if (From.isInitCapture()) { | |||
| 1804 | Expr *Init = cast<VarDecl>(From.getVariable())->getInit(); | |||
| 1805 | if (Init && Init->HasSideEffects(Context)) | |||
| 1806 | return true; | |||
| 1807 | } | |||
| 1808 | ||||
| 1809 | if (!From.isCopyCapture()) | |||
| 1810 | return false; | |||
| 1811 | ||||
| 1812 | const QualType T = From.isThisCapture() | |||
| 1813 | ? getCurrentThisType()->getPointeeType() | |||
| 1814 | : From.getCaptureType(); | |||
| 1815 | ||||
| 1816 | if (T.isVolatileQualified()) | |||
| 1817 | return true; | |||
| 1818 | ||||
| 1819 | const Type *BaseT = T->getBaseElementTypeUnsafe(); | |||
| 1820 | if (const CXXRecordDecl *RD = BaseT->getAsCXXRecordDecl()) | |||
| 1821 | return !RD->isCompleteDefinition() || !RD->hasTrivialCopyConstructor() || | |||
| 1822 | !RD->hasTrivialDestructor(); | |||
| 1823 | ||||
| 1824 | return false; | |||
| 1825 | } | |||
| 1826 | ||||
| 1827 | bool Sema::DiagnoseUnusedLambdaCapture(SourceRange CaptureRange, | |||
| 1828 | const Capture &From) { | |||
| 1829 | if (CaptureHasSideEffects(From)) | |||
| 1830 | return false; | |||
| 1831 | ||||
| 1832 | if (From.isVLATypeCapture()) | |||
| 1833 | return false; | |||
| 1834 | ||||
| 1835 | auto diag = Diag(From.getLocation(), diag::warn_unused_lambda_capture); | |||
| 1836 | if (From.isThisCapture()) | |||
| 1837 | diag << "'this'"; | |||
| 1838 | else | |||
| 1839 | diag << From.getVariable(); | |||
| 1840 | diag << From.isNonODRUsed(); | |||
| 1841 | diag << FixItHint::CreateRemoval(CaptureRange); | |||
| 1842 | return true; | |||
| 1843 | } | |||
| 1844 | ||||
| 1845 | /// Create a field within the lambda class or captured statement record for the | |||
| 1846 | /// given capture. | |||
| 1847 | FieldDecl *Sema::BuildCaptureField(RecordDecl *RD, | |||
| 1848 | const sema::Capture &Capture) { | |||
| 1849 | SourceLocation Loc = Capture.getLocation(); | |||
| 1850 | QualType FieldType = Capture.getCaptureType(); | |||
| 1851 | ||||
| 1852 | TypeSourceInfo *TSI = nullptr; | |||
| 1853 | if (Capture.isVariableCapture()) { | |||
| 1854 | const auto *Var = dyn_cast_or_null<VarDecl>(Capture.getVariable()); | |||
| 1855 | if (Var && Var->isInitCapture()) | |||
| 1856 | TSI = Var->getTypeSourceInfo(); | |||
| 1857 | } | |||
| 1858 | ||||
| 1859 | // FIXME: Should we really be doing this? A null TypeSourceInfo seems more | |||
| 1860 | // appropriate, at least for an implicit capture. | |||
| 1861 | if (!TSI) | |||
| 1862 | TSI = Context.getTrivialTypeSourceInfo(FieldType, Loc); | |||
| 1863 | ||||
| 1864 | // Build the non-static data member. | |||
| 1865 | FieldDecl *Field = | |||
| 1866 | FieldDecl::Create(Context, RD, /*StartLoc=*/Loc, /*IdLoc=*/Loc, | |||
| 1867 | /*Id=*/nullptr, FieldType, TSI, /*BW=*/nullptr, | |||
| 1868 | /*Mutable=*/false, ICIS_NoInit); | |||
| 1869 | // If the variable being captured has an invalid type, mark the class as | |||
| 1870 | // invalid as well. | |||
| 1871 | if (!FieldType->isDependentType()) { | |||
| 1872 | if (RequireCompleteSizedType(Loc, FieldType, | |||
| 1873 | diag::err_field_incomplete_or_sizeless)) { | |||
| 1874 | RD->setInvalidDecl(); | |||
| 1875 | Field->setInvalidDecl(); | |||
| 1876 | } else { | |||
| 1877 | NamedDecl *Def; | |||
| 1878 | FieldType->isIncompleteType(&Def); | |||
| 1879 | if (Def && Def->isInvalidDecl()) { | |||
| 1880 | RD->setInvalidDecl(); | |||
| 1881 | Field->setInvalidDecl(); | |||
| 1882 | } | |||
| 1883 | } | |||
| 1884 | } | |||
| 1885 | Field->setImplicit(true); | |||
| 1886 | Field->setAccess(AS_private); | |||
| 1887 | RD->addDecl(Field); | |||
| 1888 | ||||
| 1889 | if (Capture.isVLATypeCapture()) | |||
| 1890 | Field->setCapturedVLAType(Capture.getCapturedVLAType()); | |||
| 1891 | ||||
| 1892 | return Field; | |||
| 1893 | } | |||
| 1894 | ||||
| 1895 | ExprResult Sema::BuildLambdaExpr(SourceLocation StartLoc, SourceLocation EndLoc, | |||
| 1896 | LambdaScopeInfo *LSI) { | |||
| 1897 | // Collect information from the lambda scope. | |||
| 1898 | SmallVector<LambdaCapture, 4> Captures; | |||
| 1899 | SmallVector<Expr *, 4> CaptureInits; | |||
| 1900 | SourceLocation CaptureDefaultLoc = LSI->CaptureDefaultLoc; | |||
| 1901 | LambdaCaptureDefault CaptureDefault = | |||
| 1902 | mapImplicitCaptureStyle(LSI->ImpCaptureStyle); | |||
| 1903 | CXXRecordDecl *Class; | |||
| 1904 | CXXMethodDecl *CallOperator; | |||
| 1905 | SourceRange IntroducerRange; | |||
| 1906 | bool ExplicitParams; | |||
| 1907 | bool ExplicitResultType; | |||
| 1908 | CleanupInfo LambdaCleanup; | |||
| 1909 | bool ContainsUnexpandedParameterPack; | |||
| 1910 | bool IsGenericLambda; | |||
| 1911 | { | |||
| 1912 | CallOperator = LSI->CallOperator; | |||
| 1913 | Class = LSI->Lambda; | |||
| 1914 | IntroducerRange = LSI->IntroducerRange; | |||
| 1915 | ExplicitParams = LSI->ExplicitParams; | |||
| 1916 | ExplicitResultType = !LSI->HasImplicitReturnType; | |||
| 1917 | LambdaCleanup = LSI->Cleanup; | |||
| 1918 | ContainsUnexpandedParameterPack = LSI->ContainsUnexpandedParameterPack; | |||
| 1919 | IsGenericLambda = Class->isGenericLambda(); | |||
| 1920 | ||||
| 1921 | CallOperator->setLexicalDeclContext(Class); | |||
| 1922 | Decl *TemplateOrNonTemplateCallOperatorDecl = | |||
| 1923 | CallOperator->getDescribedFunctionTemplate() | |||
| 1924 | ? CallOperator->getDescribedFunctionTemplate() | |||
| 1925 | : cast<Decl>(CallOperator); | |||
| 1926 | ||||
| 1927 | // FIXME: Is this really the best choice? Keeping the lexical decl context | |||
| 1928 | // set as CurContext seems more faithful to the source. | |||
| 1929 | TemplateOrNonTemplateCallOperatorDecl->setLexicalDeclContext(Class); | |||
| 1930 | ||||
| 1931 | PopExpressionEvaluationContext(); | |||
| 1932 | ||||
| 1933 | // True if the current capture has a used capture or default before it. | |||
| 1934 | bool CurHasPreviousCapture = CaptureDefault != LCD_None; | |||
| 1935 | SourceLocation PrevCaptureLoc = CurHasPreviousCapture ? | |||
| 1936 | CaptureDefaultLoc : IntroducerRange.getBegin(); | |||
| 1937 | ||||
| 1938 | for (unsigned I = 0, N = LSI->Captures.size(); I != N; ++I) { | |||
| 1939 | const Capture &From = LSI->Captures[I]; | |||
| 1940 | ||||
| 1941 | if (From.isInvalid()) | |||
| 1942 | return ExprError(); | |||
| 1943 | ||||
| 1944 | assert(!From.isBlockCapture() && "Cannot capture __block variables")(static_cast <bool> (!From.isBlockCapture() && "Cannot capture __block variables" ) ? void (0) : __assert_fail ("!From.isBlockCapture() && \"Cannot capture __block variables\"" , "clang/lib/Sema/SemaLambda.cpp", 1944, __extension__ __PRETTY_FUNCTION__ )); | |||
| 1945 | bool IsImplicit = I >= LSI->NumExplicitCaptures; | |||
| 1946 | SourceLocation ImplicitCaptureLoc = | |||
| 1947 | IsImplicit ? CaptureDefaultLoc : SourceLocation(); | |||
| 1948 | ||||
| 1949 | // Use source ranges of explicit captures for fixits where available. | |||
| 1950 | SourceRange CaptureRange = LSI->ExplicitCaptureRanges[I]; | |||
| 1951 | ||||
| 1952 | // Warn about unused explicit captures. | |||
| 1953 | bool IsCaptureUsed = true; | |||
| 1954 | if (!CurContext->isDependentContext() && !IsImplicit && | |||
| 1955 | !From.isODRUsed()) { | |||
| 1956 | // Initialized captures that are non-ODR used may not be eliminated. | |||
| 1957 | // FIXME: Where did the IsGenericLambda here come from? | |||
| 1958 | bool NonODRUsedInitCapture = | |||
| 1959 | IsGenericLambda && From.isNonODRUsed() && From.isInitCapture(); | |||
| 1960 | if (!NonODRUsedInitCapture) { | |||
| 1961 | bool IsLast = (I + 1) == LSI->NumExplicitCaptures; | |||
| 1962 | SourceRange FixItRange; | |||
| 1963 | if (CaptureRange.isValid()) { | |||
| 1964 | if (!CurHasPreviousCapture && !IsLast) { | |||
| 1965 | // If there are no captures preceding this capture, remove the | |||
| 1966 | // following comma. | |||
| 1967 | FixItRange = SourceRange(CaptureRange.getBegin(), | |||
| 1968 | getLocForEndOfToken(CaptureRange.getEnd())); | |||
| 1969 | } else { | |||
| 1970 | // Otherwise, remove the comma since the last used capture. | |||
| 1971 | FixItRange = SourceRange(getLocForEndOfToken(PrevCaptureLoc), | |||
| 1972 | CaptureRange.getEnd()); | |||
| 1973 | } | |||
| 1974 | } | |||
| 1975 | ||||
| 1976 | IsCaptureUsed = !DiagnoseUnusedLambdaCapture(FixItRange, From); | |||
| 1977 | } | |||
| 1978 | } | |||
| 1979 | ||||
| 1980 | if (CaptureRange.isValid()) { | |||
| 1981 | CurHasPreviousCapture |= IsCaptureUsed; | |||
| 1982 | PrevCaptureLoc = CaptureRange.getEnd(); | |||
| 1983 | } | |||
| 1984 | ||||
| 1985 | // Map the capture to our AST representation. | |||
| 1986 | LambdaCapture Capture = [&] { | |||
| 1987 | if (From.isThisCapture()) { | |||
| 1988 | // Capturing 'this' implicitly with a default of '[=]' is deprecated, | |||
| 1989 | // because it results in a reference capture. Don't warn prior to | |||
| 1990 | // C++2a; there's nothing that can be done about it before then. | |||
| 1991 | if (getLangOpts().CPlusPlus20 && IsImplicit && | |||
| 1992 | CaptureDefault == LCD_ByCopy) { | |||
| 1993 | Diag(From.getLocation(), diag::warn_deprecated_this_capture); | |||
| 1994 | Diag(CaptureDefaultLoc, diag::note_deprecated_this_capture) | |||
| 1995 | << FixItHint::CreateInsertion( | |||
| 1996 | getLocForEndOfToken(CaptureDefaultLoc), ", this"); | |||
| 1997 | } | |||
| 1998 | return LambdaCapture(From.getLocation(), IsImplicit, | |||
| 1999 | From.isCopyCapture() ? LCK_StarThis : LCK_This); | |||
| 2000 | } else if (From.isVLATypeCapture()) { | |||
| 2001 | return LambdaCapture(From.getLocation(), IsImplicit, LCK_VLAType); | |||
| 2002 | } else { | |||
| 2003 | assert(From.isVariableCapture() && "unknown kind of capture")(static_cast <bool> (From.isVariableCapture() && "unknown kind of capture") ? void (0) : __assert_fail ("From.isVariableCapture() && \"unknown kind of capture\"" , "clang/lib/Sema/SemaLambda.cpp", 2003, __extension__ __PRETTY_FUNCTION__ )); | |||
| 2004 | ValueDecl *Var = From.getVariable(); | |||
| 2005 | LambdaCaptureKind Kind = | |||
| 2006 | From.isCopyCapture() ? LCK_ByCopy : LCK_ByRef; | |||
| 2007 | return LambdaCapture(From.getLocation(), IsImplicit, Kind, Var, | |||
| 2008 | From.getEllipsisLoc()); | |||
| 2009 | } | |||
| 2010 | }(); | |||
| 2011 | ||||
| 2012 | // Form the initializer for the capture field. | |||
| 2013 | ExprResult Init = BuildCaptureInit(From, ImplicitCaptureLoc); | |||
| 2014 | ||||
| 2015 | // FIXME: Skip this capture if the capture is not used, the initializer | |||
| 2016 | // has no side-effects, the type of the capture is trivial, and the | |||
| 2017 | // lambda is not externally visible. | |||
| 2018 | ||||
| 2019 | // Add a FieldDecl for the capture and form its initializer. | |||
| 2020 | BuildCaptureField(Class, From); | |||
| 2021 | Captures.push_back(Capture); | |||
| 2022 | CaptureInits.push_back(Init.get()); | |||
| 2023 | ||||
| 2024 | if (LangOpts.CUDA) | |||
| 2025 | CUDACheckLambdaCapture(CallOperator, From); | |||
| 2026 | } | |||
| 2027 | ||||
| 2028 | Class->setCaptures(Context, Captures); | |||
| 2029 | ||||
| 2030 | // C++11 [expr.prim.lambda]p6: | |||
| 2031 | // The closure type for a lambda-expression with no lambda-capture | |||
| 2032 | // has a public non-virtual non-explicit const conversion function | |||
| 2033 | // to pointer to function having the same parameter and return | |||
| 2034 | // types as the closure type's function call operator. | |||
| 2035 | if (Captures.empty() && CaptureDefault == LCD_None) | |||
| 2036 | addFunctionPointerConversions(*this, IntroducerRange, Class, | |||
| 2037 | CallOperator); | |||
| 2038 | ||||
| 2039 | // Objective-C++: | |||
| 2040 | // The closure type for a lambda-expression has a public non-virtual | |||
| 2041 | // non-explicit const conversion function to a block pointer having the | |||
| 2042 | // same parameter and return types as the closure type's function call | |||
| 2043 | // operator. | |||
| 2044 | // FIXME: Fix generic lambda to block conversions. | |||
| 2045 | if (getLangOpts().Blocks && getLangOpts().ObjC && !IsGenericLambda) | |||
| 2046 | addBlockPointerConversion(*this, IntroducerRange, Class, CallOperator); | |||
| 2047 | ||||
| 2048 | // Finalize the lambda class. | |||
| 2049 | SmallVector<Decl*, 4> Fields(Class->fields()); | |||
| 2050 | ActOnFields(nullptr, Class->getLocation(), Class, Fields, SourceLocation(), | |||
| 2051 | SourceLocation(), ParsedAttributesView()); | |||
| 2052 | CheckCompletedCXXClass(nullptr, Class); | |||
| 2053 | } | |||
| 2054 | ||||
| 2055 | Cleanup.mergeFrom(LambdaCleanup); | |||
| 2056 | ||||
| 2057 | LambdaExpr *Lambda = LambdaExpr::Create(Context, Class, IntroducerRange, | |||
| 2058 | CaptureDefault, CaptureDefaultLoc, | |||
| 2059 | ExplicitParams, ExplicitResultType, | |||
| 2060 | CaptureInits, EndLoc, | |||
| 2061 | ContainsUnexpandedParameterPack); | |||
| 2062 | // If the lambda expression's call operator is not explicitly marked constexpr | |||
| 2063 | // and we are not in a dependent context, analyze the call operator to infer | |||
| 2064 | // its constexpr-ness, suppressing diagnostics while doing so. | |||
| 2065 | if (getLangOpts().CPlusPlus17 && !CallOperator->isInvalidDecl() && | |||
| 2066 | !CallOperator->isConstexpr() && | |||
| 2067 | !isa<CoroutineBodyStmt>(CallOperator->getBody()) && | |||
| 2068 | !Class->getDeclContext()->isDependentContext()) { | |||
| 2069 | CallOperator->setConstexprKind( | |||
| 2070 | CheckConstexprFunctionDefinition(CallOperator, | |||
| 2071 | CheckConstexprKind::CheckValid) | |||
| 2072 | ? ConstexprSpecKind::Constexpr | |||
| 2073 | : ConstexprSpecKind::Unspecified); | |||
| 2074 | } | |||
| 2075 | ||||
| 2076 | // Emit delayed shadowing warnings now that the full capture list is known. | |||
| 2077 | DiagnoseShadowingLambdaDecls(LSI); | |||
| 2078 | ||||
| 2079 | if (!CurContext->isDependentContext()) { | |||
| 2080 | switch (ExprEvalContexts.back().Context) { | |||
| 2081 | // C++11 [expr.prim.lambda]p2: | |||
| 2082 | // A lambda-expression shall not appear in an unevaluated operand | |||
| 2083 | // (Clause 5). | |||
| 2084 | case ExpressionEvaluationContext::Unevaluated: | |||
| 2085 | case ExpressionEvaluationContext::UnevaluatedList: | |||
| 2086 | case ExpressionEvaluationContext::UnevaluatedAbstract: | |||
| 2087 | // C++1y [expr.const]p2: | |||
| 2088 | // A conditional-expression e is a core constant expression unless the | |||
| 2089 | // evaluation of e, following the rules of the abstract machine, would | |||
| 2090 | // evaluate [...] a lambda-expression. | |||
| 2091 | // | |||
| 2092 | // This is technically incorrect, there are some constant evaluated contexts | |||
| 2093 | // where this should be allowed. We should probably fix this when DR1607 is | |||
| 2094 | // ratified, it lays out the exact set of conditions where we shouldn't | |||
| 2095 | // allow a lambda-expression. | |||
| 2096 | case ExpressionEvaluationContext::ConstantEvaluated: | |||
| 2097 | case ExpressionEvaluationContext::ImmediateFunctionContext: | |||
| 2098 | // We don't actually diagnose this case immediately, because we | |||
| 2099 | // could be within a context where we might find out later that | |||
| 2100 | // the expression is potentially evaluated (e.g., for typeid). | |||
| 2101 | ExprEvalContexts.back().Lambdas.push_back(Lambda); | |||
| 2102 | break; | |||
| 2103 | ||||
| 2104 | case ExpressionEvaluationContext::DiscardedStatement: | |||
| 2105 | case ExpressionEvaluationContext::PotentiallyEvaluated: | |||
| 2106 | case ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed: | |||
| 2107 | break; | |||
| 2108 | } | |||
| 2109 | } | |||
| 2110 | ||||
| 2111 | return MaybeBindToTemporary(Lambda); | |||
| 2112 | } | |||
| 2113 | ||||
| 2114 | ExprResult Sema::BuildBlockForLambdaConversion(SourceLocation CurrentLocation, | |||
| 2115 | SourceLocation ConvLocation, | |||
| 2116 | CXXConversionDecl *Conv, | |||
| 2117 | Expr *Src) { | |||
| 2118 | // Make sure that the lambda call operator is marked used. | |||
| 2119 | CXXRecordDecl *Lambda = Conv->getParent(); | |||
| 2120 | CXXMethodDecl *CallOperator | |||
| 2121 | = cast<CXXMethodDecl>( | |||
| 2122 | Lambda->lookup( | |||
| 2123 | Context.DeclarationNames.getCXXOperatorName(OO_Call)).front()); | |||
| 2124 | CallOperator->setReferenced(); | |||
| 2125 | CallOperator->markUsed(Context); | |||
| 2126 | ||||
| 2127 | ExprResult Init = PerformCopyInitialization( | |||
| 2128 | InitializedEntity::InitializeLambdaToBlock(ConvLocation, Src->getType()), | |||
| 2129 | CurrentLocation, Src); | |||
| 2130 | if (!Init.isInvalid()) | |||
| 2131 | Init = ActOnFinishFullExpr(Init.get(), /*DiscardedValue*/ false); | |||
| 2132 | ||||
| 2133 | if (Init.isInvalid()) | |||
| 2134 | return ExprError(); | |||
| 2135 | ||||
| 2136 | // Create the new block to be returned. | |||
| 2137 | BlockDecl *Block = BlockDecl::Create(Context, CurContext, ConvLocation); | |||
| 2138 | ||||
| 2139 | // Set the type information. | |||
| 2140 | Block->setSignatureAsWritten(CallOperator->getTypeSourceInfo()); | |||
| 2141 | Block->setIsVariadic(CallOperator->isVariadic()); | |||
| 2142 | Block->setBlockMissingReturnType(false); | |||
| 2143 | ||||
| 2144 | // Add parameters. | |||
| 2145 | SmallVector<ParmVarDecl *, 4> BlockParams; | |||
| 2146 | for (unsigned I = 0, N = CallOperator->getNumParams(); I != N; ++I) { | |||
| 2147 | ParmVarDecl *From = CallOperator->getParamDecl(I); | |||
| 2148 | BlockParams.push_back(ParmVarDecl::Create( | |||
| 2149 | Context, Block, From->getBeginLoc(), From->getLocation(), | |||
| 2150 | From->getIdentifier(), From->getType(), From->getTypeSourceInfo(), | |||
| 2151 | From->getStorageClass(), | |||
| 2152 | /*DefArg=*/nullptr)); | |||
| 2153 | } | |||
| 2154 | Block->setParams(BlockParams); | |||
| 2155 | ||||
| 2156 | Block->setIsConversionFromLambda(true); | |||
| 2157 | ||||
| 2158 | // Add capture. The capture uses a fake variable, which doesn't correspond | |||
| 2159 | // to any actual memory location. However, the initializer copy-initializes | |||
| 2160 | // the lambda object. | |||
| 2161 | TypeSourceInfo *CapVarTSI = | |||
| 2162 | Context.getTrivialTypeSourceInfo(Src->getType()); | |||
| 2163 | VarDecl *CapVar = VarDecl::Create(Context, Block, ConvLocation, | |||
| 2164 | ConvLocation, nullptr, | |||
| 2165 | Src->getType(), CapVarTSI, | |||
| 2166 | SC_None); | |||
| 2167 | BlockDecl::Capture Capture(/*variable=*/CapVar, /*byRef=*/false, | |||
| 2168 | /*nested=*/false, /*copy=*/Init.get()); | |||
| 2169 | Block->setCaptures(Context, Capture, /*CapturesCXXThis=*/false); | |||
| 2170 | ||||
| 2171 | // Add a fake function body to the block. IR generation is responsible | |||
| 2172 | // for filling in the actual body, which cannot be expressed as an AST. | |||
| 2173 | Block->setBody(new (Context) CompoundStmt(ConvLocation)); | |||
| 2174 | ||||
| 2175 | // Create the block literal expression. | |||
| 2176 | Expr *BuildBlock = new (Context) BlockExpr(Block, Conv->getConversionType()); | |||
| 2177 | ExprCleanupObjects.push_back(Block); | |||
| 2178 | Cleanup.setExprNeedsCleanups(true); | |||
| 2179 | ||||
| 2180 | return BuildBlock; | |||
| 2181 | } |
| 1 | //===--- DeclSpec.h - Parsed declaration specifiers -------------*- C++ -*-===// | ||||
| 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 | /// \file | ||||
| 10 | /// This file defines the classes used to store parsed information about | ||||
| 11 | /// declaration-specifiers and declarators. | ||||
| 12 | /// | ||||
| 13 | /// \verbatim | ||||
| 14 | /// static const int volatile x, *y, *(*(*z)[10])(const void *x); | ||||
| 15 | /// ------------------------- - -- --------------------------- | ||||
| 16 | /// declaration-specifiers \ | / | ||||
| 17 | /// declarators | ||||
| 18 | /// \endverbatim | ||||
| 19 | /// | ||||
| 20 | //===----------------------------------------------------------------------===// | ||||
| 21 | |||||
| 22 | #ifndef LLVM_CLANG_SEMA_DECLSPEC_H | ||||
| 23 | #define LLVM_CLANG_SEMA_DECLSPEC_H | ||||
| 24 | |||||
| 25 | #include "clang/AST/DeclCXX.h" | ||||
| 26 | #include "clang/AST/DeclObjCCommon.h" | ||||
| 27 | #include "clang/AST/NestedNameSpecifier.h" | ||||
| 28 | #include "clang/Basic/ExceptionSpecificationType.h" | ||||
| 29 | #include "clang/Basic/Lambda.h" | ||||
| 30 | #include "clang/Basic/OperatorKinds.h" | ||||
| 31 | #include "clang/Basic/Specifiers.h" | ||||
| 32 | #include "clang/Lex/Token.h" | ||||
| 33 | #include "clang/Sema/Ownership.h" | ||||
| 34 | #include "clang/Sema/ParsedAttr.h" | ||||
| 35 | #include "llvm/ADT/STLExtras.h" | ||||
| 36 | #include "llvm/ADT/SmallVector.h" | ||||
| 37 | #include "llvm/Support/Compiler.h" | ||||
| 38 | #include "llvm/Support/ErrorHandling.h" | ||||
| 39 | |||||
| 40 | namespace clang { | ||||
| 41 | class ASTContext; | ||||
| 42 | class CXXRecordDecl; | ||||
| 43 | class TypeLoc; | ||||
| 44 | class LangOptions; | ||||
| 45 | class IdentifierInfo; | ||||
| 46 | class NamespaceAliasDecl; | ||||
| 47 | class NamespaceDecl; | ||||
| 48 | class ObjCDeclSpec; | ||||
| 49 | class Sema; | ||||
| 50 | class Declarator; | ||||
| 51 | struct TemplateIdAnnotation; | ||||
| 52 | |||||
| 53 | /// Represents a C++ nested-name-specifier or a global scope specifier. | ||||
| 54 | /// | ||||
| 55 | /// These can be in 3 states: | ||||
| 56 | /// 1) Not present, identified by isEmpty() | ||||
| 57 | /// 2) Present, identified by isNotEmpty() | ||||
| 58 | /// 2.a) Valid, identified by isValid() | ||||
| 59 | /// 2.b) Invalid, identified by isInvalid(). | ||||
| 60 | /// | ||||
| 61 | /// isSet() is deprecated because it mostly corresponded to "valid" but was | ||||
| 62 | /// often used as if it meant "present". | ||||
| 63 | /// | ||||
| 64 | /// The actual scope is described by getScopeRep(). | ||||
| 65 | /// | ||||
| 66 | /// If the kind of getScopeRep() is TypeSpec then TemplateParamLists may be empty | ||||
| 67 | /// or contain the template parameter lists attached to the current declaration. | ||||
| 68 | /// Consider the following example: | ||||
| 69 | /// template <class T> void SomeType<T>::some_method() {} | ||||
| 70 | /// If CXXScopeSpec refers to SomeType<T> then TemplateParamLists will contain | ||||
| 71 | /// a single element referring to template <class T>. | ||||
| 72 | |||||
| 73 | class CXXScopeSpec { | ||||
| 74 | SourceRange Range; | ||||
| 75 | NestedNameSpecifierLocBuilder Builder; | ||||
| 76 | ArrayRef<TemplateParameterList *> TemplateParamLists; | ||||
| 77 | |||||
| 78 | public: | ||||
| 79 | SourceRange getRange() const { return Range; } | ||||
| 80 | void setRange(SourceRange R) { Range = R; } | ||||
| 81 | void setBeginLoc(SourceLocation Loc) { Range.setBegin(Loc); } | ||||
| 82 | void setEndLoc(SourceLocation Loc) { Range.setEnd(Loc); } | ||||
| 83 | SourceLocation getBeginLoc() const { return Range.getBegin(); } | ||||
| 84 | SourceLocation getEndLoc() const { return Range.getEnd(); } | ||||
| 85 | |||||
| 86 | void setTemplateParamLists(ArrayRef<TemplateParameterList *> L) { | ||||
| 87 | TemplateParamLists = L; | ||||
| 88 | } | ||||
| 89 | ArrayRef<TemplateParameterList *> getTemplateParamLists() const { | ||||
| 90 | return TemplateParamLists; | ||||
| 91 | } | ||||
| 92 | |||||
| 93 | /// Retrieve the representation of the nested-name-specifier. | ||||
| 94 | NestedNameSpecifier *getScopeRep() const { | ||||
| 95 | return Builder.getRepresentation(); | ||||
| 96 | } | ||||
| 97 | |||||
| 98 | /// Extend the current nested-name-specifier by another | ||||
| 99 | /// nested-name-specifier component of the form 'type::'. | ||||
| 100 | /// | ||||
| 101 | /// \param Context The AST context in which this nested-name-specifier | ||||
| 102 | /// resides. | ||||
| 103 | /// | ||||
| 104 | /// \param TemplateKWLoc The location of the 'template' keyword, if present. | ||||
| 105 | /// | ||||
| 106 | /// \param TL The TypeLoc that describes the type preceding the '::'. | ||||
| 107 | /// | ||||
| 108 | /// \param ColonColonLoc The location of the trailing '::'. | ||||
| 109 | void Extend(ASTContext &Context, SourceLocation TemplateKWLoc, TypeLoc TL, | ||||
| 110 | SourceLocation ColonColonLoc); | ||||
| 111 | |||||
| 112 | /// Extend the current nested-name-specifier by another | ||||
| 113 | /// nested-name-specifier component of the form 'identifier::'. | ||||
| 114 | /// | ||||
| 115 | /// \param Context The AST context in which this nested-name-specifier | ||||
| 116 | /// resides. | ||||
| 117 | /// | ||||
| 118 | /// \param Identifier The identifier. | ||||
| 119 | /// | ||||
| 120 | /// \param IdentifierLoc The location of the identifier. | ||||
| 121 | /// | ||||
| 122 | /// \param ColonColonLoc The location of the trailing '::'. | ||||
| 123 | void Extend(ASTContext &Context, IdentifierInfo *Identifier, | ||||
| 124 | SourceLocation IdentifierLoc, SourceLocation ColonColonLoc); | ||||
| 125 | |||||
| 126 | /// Extend the current nested-name-specifier by another | ||||
| 127 | /// nested-name-specifier component of the form 'namespace::'. | ||||
| 128 | /// | ||||
| 129 | /// \param Context The AST context in which this nested-name-specifier | ||||
| 130 | /// resides. | ||||
| 131 | /// | ||||
| 132 | /// \param Namespace The namespace. | ||||
| 133 | /// | ||||
| 134 | /// \param NamespaceLoc The location of the namespace name. | ||||
| 135 | /// | ||||
| 136 | /// \param ColonColonLoc The location of the trailing '::'. | ||||
| 137 | void Extend(ASTContext &Context, NamespaceDecl *Namespace, | ||||
| 138 | SourceLocation NamespaceLoc, SourceLocation ColonColonLoc); | ||||
| 139 | |||||
| 140 | /// Extend the current nested-name-specifier by another | ||||
| 141 | /// nested-name-specifier component of the form 'namespace-alias::'. | ||||
| 142 | /// | ||||
| 143 | /// \param Context The AST context in which this nested-name-specifier | ||||
| 144 | /// resides. | ||||
| 145 | /// | ||||
| 146 | /// \param Alias The namespace alias. | ||||
| 147 | /// | ||||
| 148 | /// \param AliasLoc The location of the namespace alias | ||||
| 149 | /// name. | ||||
| 150 | /// | ||||
| 151 | /// \param ColonColonLoc The location of the trailing '::'. | ||||
| 152 | void Extend(ASTContext &Context, NamespaceAliasDecl *Alias, | ||||
| 153 | SourceLocation AliasLoc, SourceLocation ColonColonLoc); | ||||
| 154 | |||||
| 155 | /// Turn this (empty) nested-name-specifier into the global | ||||
| 156 | /// nested-name-specifier '::'. | ||||
| 157 | void MakeGlobal(ASTContext &Context, SourceLocation ColonColonLoc); | ||||
| 158 | |||||
| 159 | /// Turns this (empty) nested-name-specifier into '__super' | ||||
| 160 | /// nested-name-specifier. | ||||
| 161 | /// | ||||
| 162 | /// \param Context The AST context in which this nested-name-specifier | ||||
| 163 | /// resides. | ||||
| 164 | /// | ||||
| 165 | /// \param RD The declaration of the class in which nested-name-specifier | ||||
| 166 | /// appeared. | ||||
| 167 | /// | ||||
| 168 | /// \param SuperLoc The location of the '__super' keyword. | ||||
| 169 | /// name. | ||||
| 170 | /// | ||||
| 171 | /// \param ColonColonLoc The location of the trailing '::'. | ||||
| 172 | void MakeSuper(ASTContext &Context, CXXRecordDecl *RD, | ||||
| 173 | SourceLocation SuperLoc, SourceLocation ColonColonLoc); | ||||
| 174 | |||||
| 175 | /// Make a new nested-name-specifier from incomplete source-location | ||||
| 176 | /// information. | ||||
| 177 | /// | ||||
| 178 | /// FIXME: This routine should be used very, very rarely, in cases where we | ||||
| 179 | /// need to synthesize a nested-name-specifier. Most code should instead use | ||||
| 180 | /// \c Adopt() with a proper \c NestedNameSpecifierLoc. | ||||
| 181 | void MakeTrivial(ASTContext &Context, NestedNameSpecifier *Qualifier, | ||||
| 182 | SourceRange R); | ||||
| 183 | |||||
| 184 | /// Adopt an existing nested-name-specifier (with source-range | ||||
| 185 | /// information). | ||||
| 186 | void Adopt(NestedNameSpecifierLoc Other); | ||||
| 187 | |||||
| 188 | /// Retrieve a nested-name-specifier with location information, copied | ||||
| 189 | /// into the given AST context. | ||||
| 190 | /// | ||||
| 191 | /// \param Context The context into which this nested-name-specifier will be | ||||
| 192 | /// copied. | ||||
| 193 | NestedNameSpecifierLoc getWithLocInContext(ASTContext &Context) const; | ||||
| 194 | |||||
| 195 | /// Retrieve the location of the name in the last qualifier | ||||
| 196 | /// in this nested name specifier. | ||||
| 197 | /// | ||||
| 198 | /// For example, the location of \c bar | ||||
| 199 | /// in | ||||
| 200 | /// \verbatim | ||||
| 201 | /// \::foo::bar<0>:: | ||||
| 202 | /// ^~~ | ||||
| 203 | /// \endverbatim | ||||
| 204 | SourceLocation getLastQualifierNameLoc() const; | ||||
| 205 | |||||
| 206 | /// No scope specifier. | ||||
| 207 | bool isEmpty() const { return Range.isInvalid() && getScopeRep() == nullptr; } | ||||
| 208 | /// A scope specifier is present, but may be valid or invalid. | ||||
| 209 | bool isNotEmpty() const { return !isEmpty(); } | ||||
| 210 | |||||
| 211 | /// An error occurred during parsing of the scope specifier. | ||||
| 212 | bool isInvalid() const { return Range.isValid() && getScopeRep() == nullptr; } | ||||
| 213 | /// A scope specifier is present, and it refers to a real scope. | ||||
| 214 | bool isValid() const { return getScopeRep() != nullptr; } | ||||
| 215 | |||||
| 216 | /// Indicate that this nested-name-specifier is invalid. | ||||
| 217 | void SetInvalid(SourceRange R) { | ||||
| 218 | assert(R.isValid() && "Must have a valid source range")(static_cast <bool> (R.isValid() && "Must have a valid source range" ) ? void (0) : __assert_fail ("R.isValid() && \"Must have a valid source range\"" , "clang/include/clang/Sema/DeclSpec.h", 218, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 219 | if (Range.getBegin().isInvalid()) | ||||
| 220 | Range.setBegin(R.getBegin()); | ||||
| 221 | Range.setEnd(R.getEnd()); | ||||
| 222 | Builder.Clear(); | ||||
| 223 | } | ||||
| 224 | |||||
| 225 | /// Deprecated. Some call sites intend isNotEmpty() while others intend | ||||
| 226 | /// isValid(). | ||||
| 227 | bool isSet() const { return getScopeRep() != nullptr; } | ||||
| 228 | |||||
| 229 | void clear() { | ||||
| 230 | Range = SourceRange(); | ||||
| 231 | Builder.Clear(); | ||||
| 232 | } | ||||
| 233 | |||||
| 234 | /// Retrieve the data associated with the source-location information. | ||||
| 235 | char *location_data() const { return Builder.getBuffer().first; } | ||||
| 236 | |||||
| 237 | /// Retrieve the size of the data associated with source-location | ||||
| 238 | /// information. | ||||
| 239 | unsigned location_size() const { return Builder.getBuffer().second; } | ||||
| 240 | }; | ||||
| 241 | |||||
| 242 | /// Captures information about "declaration specifiers". | ||||
| 243 | /// | ||||
| 244 | /// "Declaration specifiers" encompasses storage-class-specifiers, | ||||
| 245 | /// type-specifiers, type-qualifiers, and function-specifiers. | ||||
| 246 | class DeclSpec { | ||||
| 247 | public: | ||||
| 248 | /// storage-class-specifier | ||||
| 249 | /// \note The order of these enumerators is important for diagnostics. | ||||
| 250 | enum SCS { | ||||
| 251 | SCS_unspecified = 0, | ||||
| 252 | SCS_typedef, | ||||
| 253 | SCS_extern, | ||||
| 254 | SCS_static, | ||||
| 255 | SCS_auto, | ||||
| 256 | SCS_register, | ||||
| 257 | SCS_private_extern, | ||||
| 258 | SCS_mutable | ||||
| 259 | }; | ||||
| 260 | |||||
| 261 | // Import thread storage class specifier enumeration and constants. | ||||
| 262 | // These can be combined with SCS_extern and SCS_static. | ||||
| 263 | typedef ThreadStorageClassSpecifier TSCS; | ||||
| 264 | static const TSCS TSCS_unspecified = clang::TSCS_unspecified; | ||||
| 265 | static const TSCS TSCS___thread = clang::TSCS___thread; | ||||
| 266 | static const TSCS TSCS_thread_local = clang::TSCS_thread_local; | ||||
| 267 | static const TSCS TSCS__Thread_local = clang::TSCS__Thread_local; | ||||
| 268 | |||||
| 269 | enum TSC { | ||||
| 270 | TSC_unspecified, | ||||
| 271 | TSC_imaginary, | ||||
| 272 | TSC_complex | ||||
| 273 | }; | ||||
| 274 | |||||
| 275 | // Import type specifier type enumeration and constants. | ||||
| 276 | typedef TypeSpecifierType TST; | ||||
| 277 | static const TST TST_unspecified = clang::TST_unspecified; | ||||
| 278 | static const TST TST_void = clang::TST_void; | ||||
| 279 | static const TST TST_char = clang::TST_char; | ||||
| 280 | static const TST TST_wchar = clang::TST_wchar; | ||||
| 281 | static const TST TST_char8 = clang::TST_char8; | ||||
| 282 | static const TST TST_char16 = clang::TST_char16; | ||||
| 283 | static const TST TST_char32 = clang::TST_char32; | ||||
| 284 | static const TST TST_int = clang::TST_int; | ||||
| 285 | static const TST TST_int128 = clang::TST_int128; | ||||
| 286 | static const TST TST_bitint = clang::TST_bitint; | ||||
| 287 | static const TST TST_half = clang::TST_half; | ||||
| 288 | static const TST TST_BFloat16 = clang::TST_BFloat16; | ||||
| 289 | static const TST TST_float = clang::TST_float; | ||||
| 290 | static const TST TST_double = clang::TST_double; | ||||
| 291 | static const TST TST_float16 = clang::TST_Float16; | ||||
| 292 | static const TST TST_accum = clang::TST_Accum; | ||||
| 293 | static const TST TST_fract = clang::TST_Fract; | ||||
| 294 | static const TST TST_float128 = clang::TST_float128; | ||||
| 295 | static const TST TST_ibm128 = clang::TST_ibm128; | ||||
| 296 | static const TST TST_bool = clang::TST_bool; | ||||
| 297 | static const TST TST_decimal32 = clang::TST_decimal32; | ||||
| 298 | static const TST TST_decimal64 = clang::TST_decimal64; | ||||
| 299 | static const TST TST_decimal128 = clang::TST_decimal128; | ||||
| 300 | static const TST TST_enum = clang::TST_enum; | ||||
| 301 | static const TST TST_union = clang::TST_union; | ||||
| 302 | static const TST TST_struct = clang::TST_struct; | ||||
| 303 | static const TST TST_interface = clang::TST_interface; | ||||
| 304 | static const TST TST_class = clang::TST_class; | ||||
| 305 | static const TST TST_typename = clang::TST_typename; | ||||
| 306 | static const TST TST_typeofType = clang::TST_typeofType; | ||||
| 307 | static const TST TST_typeofExpr = clang::TST_typeofExpr; | ||||
| 308 | static const TST TST_typeof_unqualType = clang::TST_typeof_unqualType; | ||||
| 309 | static const TST TST_typeof_unqualExpr = clang::TST_typeof_unqualExpr; | ||||
| 310 | static const TST TST_decltype = clang::TST_decltype; | ||||
| 311 | static const TST TST_decltype_auto = clang::TST_decltype_auto; | ||||
| 312 | #define TRANSFORM_TYPE_TRAIT_DEF(_, Trait) \ | ||||
| 313 | static const TST TST_##Trait = clang::TST_##Trait; | ||||
| 314 | #include "clang/Basic/TransformTypeTraits.def" | ||||
| 315 | static const TST TST_auto = clang::TST_auto; | ||||
| 316 | static const TST TST_auto_type = clang::TST_auto_type; | ||||
| 317 | static const TST TST_unknown_anytype = clang::TST_unknown_anytype; | ||||
| 318 | static const TST TST_atomic = clang::TST_atomic; | ||||
| 319 | #define GENERIC_IMAGE_TYPE(ImgType, Id) \ | ||||
| 320 | static const TST TST_##ImgType##_t = clang::TST_##ImgType##_t; | ||||
| 321 | #include "clang/Basic/OpenCLImageTypes.def" | ||||
| 322 | static const TST TST_error = clang::TST_error; | ||||
| 323 | |||||
| 324 | // type-qualifiers | ||||
| 325 | enum TQ { // NOTE: These flags must be kept in sync with Qualifiers::TQ. | ||||
| 326 | TQ_unspecified = 0, | ||||
| 327 | TQ_const = 1, | ||||
| 328 | TQ_restrict = 2, | ||||
| 329 | TQ_volatile = 4, | ||||
| 330 | TQ_unaligned = 8, | ||||
| 331 | // This has no corresponding Qualifiers::TQ value, because it's not treated | ||||
| 332 | // as a qualifier in our type system. | ||||
| 333 | TQ_atomic = 16 | ||||
| 334 | }; | ||||
| 335 | |||||
| 336 | /// ParsedSpecifiers - Flags to query which specifiers were applied. This is | ||||
| 337 | /// returned by getParsedSpecifiers. | ||||
| 338 | enum ParsedSpecifiers { | ||||
| 339 | PQ_None = 0, | ||||
| 340 | PQ_StorageClassSpecifier = 1, | ||||
| 341 | PQ_TypeSpecifier = 2, | ||||
| 342 | PQ_TypeQualifier = 4, | ||||
| 343 | PQ_FunctionSpecifier = 8 | ||||
| 344 | // FIXME: Attributes should be included here. | ||||
| 345 | }; | ||||
| 346 | |||||
| 347 | enum FriendSpecified : bool { | ||||
| 348 | No, | ||||
| 349 | Yes, | ||||
| 350 | }; | ||||
| 351 | |||||
| 352 | private: | ||||
| 353 | // storage-class-specifier | ||||
| 354 | /*SCS*/unsigned StorageClassSpec : 3; | ||||
| 355 | /*TSCS*/unsigned ThreadStorageClassSpec : 2; | ||||
| 356 | unsigned SCS_extern_in_linkage_spec : 1; | ||||
| 357 | |||||
| 358 | // type-specifier | ||||
| 359 | /*TypeSpecifierWidth*/ unsigned TypeSpecWidth : 2; | ||||
| 360 | /*TSC*/unsigned TypeSpecComplex : 2; | ||||
| 361 | /*TSS*/unsigned TypeSpecSign : 2; | ||||
| 362 | /*TST*/unsigned TypeSpecType : 7; | ||||
| 363 | unsigned TypeAltiVecVector : 1; | ||||
| 364 | unsigned TypeAltiVecPixel : 1; | ||||
| 365 | unsigned TypeAltiVecBool : 1; | ||||
| 366 | unsigned TypeSpecOwned : 1; | ||||
| 367 | unsigned TypeSpecPipe : 1; | ||||
| 368 | unsigned TypeSpecSat : 1; | ||||
| 369 | unsigned ConstrainedAuto : 1; | ||||
| 370 | |||||
| 371 | // type-qualifiers | ||||
| 372 | unsigned TypeQualifiers : 5; // Bitwise OR of TQ. | ||||
| 373 | |||||
| 374 | // function-specifier | ||||
| 375 | unsigned FS_inline_specified : 1; | ||||
| 376 | unsigned FS_forceinline_specified: 1; | ||||
| 377 | unsigned FS_virtual_specified : 1; | ||||
| 378 | unsigned FS_noreturn_specified : 1; | ||||
| 379 | |||||
| 380 | // friend-specifier | ||||
| 381 | unsigned Friend_specified : 1; | ||||
| 382 | |||||
| 383 | // constexpr-specifier | ||||
| 384 | unsigned ConstexprSpecifier : 2; | ||||
| 385 | |||||
| 386 | union { | ||||
| 387 | UnionParsedType TypeRep; | ||||
| 388 | Decl *DeclRep; | ||||
| 389 | Expr *ExprRep; | ||||
| 390 | TemplateIdAnnotation *TemplateIdRep; | ||||
| 391 | }; | ||||
| 392 | |||||
| 393 | /// ExplicitSpecifier - Store information about explicit spicifer. | ||||
| 394 | ExplicitSpecifier FS_explicit_specifier; | ||||
| 395 | |||||
| 396 | // attributes. | ||||
| 397 | ParsedAttributes Attrs; | ||||
| 398 | |||||
| 399 | // Scope specifier for the type spec, if applicable. | ||||
| 400 | CXXScopeSpec TypeScope; | ||||
| 401 | |||||
| 402 | // SourceLocation info. These are null if the item wasn't specified or if | ||||
| 403 | // the setting was synthesized. | ||||
| 404 | SourceRange Range; | ||||
| 405 | |||||
| 406 | SourceLocation StorageClassSpecLoc, ThreadStorageClassSpecLoc; | ||||
| 407 | SourceRange TSWRange; | ||||
| 408 | SourceLocation TSCLoc, TSSLoc, TSTLoc, AltiVecLoc, TSSatLoc; | ||||
| 409 | /// TSTNameLoc - If TypeSpecType is any of class, enum, struct, union, | ||||
| 410 | /// typename, then this is the location of the named type (if present); | ||||
| 411 | /// otherwise, it is the same as TSTLoc. Hence, the pair TSTLoc and | ||||
| 412 | /// TSTNameLoc provides source range info for tag types. | ||||
| 413 | SourceLocation TSTNameLoc; | ||||
| 414 | SourceRange TypeofParensRange; | ||||
| 415 | SourceLocation TQ_constLoc, TQ_restrictLoc, TQ_volatileLoc, TQ_atomicLoc, | ||||
| 416 | TQ_unalignedLoc; | ||||
| 417 | SourceLocation FS_inlineLoc, FS_virtualLoc, FS_explicitLoc, FS_noreturnLoc; | ||||
| 418 | SourceLocation FS_explicitCloseParenLoc; | ||||
| 419 | SourceLocation FS_forceinlineLoc; | ||||
| 420 | SourceLocation FriendLoc, ModulePrivateLoc, ConstexprLoc; | ||||
| 421 | SourceLocation TQ_pipeLoc; | ||||
| 422 | |||||
| 423 | WrittenBuiltinSpecs writtenBS; | ||||
| 424 | void SaveWrittenBuiltinSpecs(); | ||||
| 425 | |||||
| 426 | ObjCDeclSpec *ObjCQualifiers; | ||||
| 427 | |||||
| 428 | static bool isTypeRep(TST T) { | ||||
| 429 | return T == TST_atomic || T == TST_typename || T == TST_typeofType || | ||||
| 430 | T == TST_typeof_unqualType || isTransformTypeTrait(T); | ||||
| 431 | } | ||||
| 432 | static bool isExprRep(TST T) { | ||||
| 433 | return T == TST_typeofExpr || T == TST_typeof_unqualExpr || | ||||
| 434 | T == TST_decltype || T == TST_bitint; | ||||
| 435 | } | ||||
| 436 | static bool isTemplateIdRep(TST T) { | ||||
| 437 | return (T == TST_auto || T == TST_decltype_auto); | ||||
| 438 | } | ||||
| 439 | |||||
| 440 | DeclSpec(const DeclSpec &) = delete; | ||||
| 441 | void operator=(const DeclSpec &) = delete; | ||||
| 442 | public: | ||||
| 443 | static bool isDeclRep(TST T) { | ||||
| 444 | return (T == TST_enum || T == TST_struct || | ||||
| 445 | T == TST_interface || T == TST_union || | ||||
| 446 | T == TST_class); | ||||
| 447 | } | ||||
| 448 | static bool isTransformTypeTrait(TST T) { | ||||
| 449 | constexpr std::array<TST, 16> Traits = { | ||||
| 450 | #define TRANSFORM_TYPE_TRAIT_DEF(_, Trait) TST_##Trait, | ||||
| 451 | #include "clang/Basic/TransformTypeTraits.def" | ||||
| 452 | }; | ||||
| 453 | |||||
| 454 | return T >= Traits.front() && T <= Traits.back(); | ||||
| 455 | } | ||||
| 456 | |||||
| 457 | DeclSpec(AttributeFactory &attrFactory) | ||||
| 458 | : StorageClassSpec(SCS_unspecified), | ||||
| 459 | ThreadStorageClassSpec(TSCS_unspecified), | ||||
| 460 | SCS_extern_in_linkage_spec(false), | ||||
| 461 | TypeSpecWidth(static_cast<unsigned>(TypeSpecifierWidth::Unspecified)), | ||||
| 462 | TypeSpecComplex(TSC_unspecified), | ||||
| 463 | TypeSpecSign(static_cast<unsigned>(TypeSpecifierSign::Unspecified)), | ||||
| 464 | TypeSpecType(TST_unspecified), TypeAltiVecVector(false), | ||||
| 465 | TypeAltiVecPixel(false), TypeAltiVecBool(false), TypeSpecOwned(false), | ||||
| 466 | TypeSpecPipe(false), TypeSpecSat(false), ConstrainedAuto(false), | ||||
| 467 | TypeQualifiers(TQ_unspecified), FS_inline_specified(false), | ||||
| 468 | FS_forceinline_specified(false), FS_virtual_specified(false), | ||||
| 469 | FS_noreturn_specified(false), Friend_specified(false), | ||||
| 470 | ConstexprSpecifier( | ||||
| 471 | static_cast<unsigned>(ConstexprSpecKind::Unspecified)), | ||||
| 472 | Attrs(attrFactory), writtenBS(), ObjCQualifiers(nullptr) {} | ||||
| 473 | |||||
| 474 | // storage-class-specifier | ||||
| 475 | SCS getStorageClassSpec() const { return (SCS)StorageClassSpec; } | ||||
| 476 | TSCS getThreadStorageClassSpec() const { | ||||
| 477 | return (TSCS)ThreadStorageClassSpec; | ||||
| 478 | } | ||||
| 479 | bool isExternInLinkageSpec() const { return SCS_extern_in_linkage_spec; } | ||||
| 480 | void setExternInLinkageSpec(bool Value) { | ||||
| 481 | SCS_extern_in_linkage_spec = Value; | ||||
| 482 | } | ||||
| 483 | |||||
| 484 | SourceLocation getStorageClassSpecLoc() const { return StorageClassSpecLoc; } | ||||
| 485 | SourceLocation getThreadStorageClassSpecLoc() const { | ||||
| 486 | return ThreadStorageClassSpecLoc; | ||||
| 487 | } | ||||
| 488 | |||||
| 489 | void ClearStorageClassSpecs() { | ||||
| 490 | StorageClassSpec = DeclSpec::SCS_unspecified; | ||||
| 491 | ThreadStorageClassSpec = DeclSpec::TSCS_unspecified; | ||||
| 492 | SCS_extern_in_linkage_spec = false; | ||||
| 493 | StorageClassSpecLoc = SourceLocation(); | ||||
| 494 | ThreadStorageClassSpecLoc = SourceLocation(); | ||||
| 495 | } | ||||
| 496 | |||||
| 497 | void ClearTypeSpecType() { | ||||
| 498 | TypeSpecType = DeclSpec::TST_unspecified; | ||||
| 499 | TypeSpecOwned = false; | ||||
| 500 | TSTLoc = SourceLocation(); | ||||
| 501 | } | ||||
| 502 | |||||
| 503 | // type-specifier | ||||
| 504 | TypeSpecifierWidth getTypeSpecWidth() const { | ||||
| 505 | return static_cast<TypeSpecifierWidth>(TypeSpecWidth); | ||||
| 506 | } | ||||
| 507 | TSC getTypeSpecComplex() const { return (TSC)TypeSpecComplex; } | ||||
| 508 | TypeSpecifierSign getTypeSpecSign() const { | ||||
| 509 | return static_cast<TypeSpecifierSign>(TypeSpecSign); | ||||
| 510 | } | ||||
| 511 | TST getTypeSpecType() const { return (TST)TypeSpecType; } | ||||
| 512 | bool isTypeAltiVecVector() const { return TypeAltiVecVector; } | ||||
| 513 | bool isTypeAltiVecPixel() const { return TypeAltiVecPixel; } | ||||
| 514 | bool isTypeAltiVecBool() const { return TypeAltiVecBool; } | ||||
| 515 | bool isTypeSpecOwned() const { return TypeSpecOwned; } | ||||
| 516 | bool isTypeRep() const { return isTypeRep((TST) TypeSpecType); } | ||||
| 517 | bool isTypeSpecPipe() const { return TypeSpecPipe; } | ||||
| 518 | bool isTypeSpecSat() const { return TypeSpecSat; } | ||||
| 519 | bool isConstrainedAuto() const { return ConstrainedAuto; } | ||||
| 520 | |||||
| 521 | ParsedType getRepAsType() const { | ||||
| 522 | assert(isTypeRep((TST) TypeSpecType) && "DeclSpec does not store a type")(static_cast <bool> (isTypeRep((TST) TypeSpecType) && "DeclSpec does not store a type") ? void (0) : __assert_fail ("isTypeRep((TST) TypeSpecType) && \"DeclSpec does not store a type\"" , "clang/include/clang/Sema/DeclSpec.h", 522, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 523 | return TypeRep; | ||||
| 524 | } | ||||
| 525 | Decl *getRepAsDecl() const { | ||||
| 526 | assert(isDeclRep((TST) TypeSpecType) && "DeclSpec does not store a decl")(static_cast <bool> (isDeclRep((TST) TypeSpecType) && "DeclSpec does not store a decl") ? void (0) : __assert_fail ("isDeclRep((TST) TypeSpecType) && \"DeclSpec does not store a decl\"" , "clang/include/clang/Sema/DeclSpec.h", 526, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 527 | return DeclRep; | ||||
| 528 | } | ||||
| 529 | Expr *getRepAsExpr() const { | ||||
| 530 | assert(isExprRep((TST) TypeSpecType) && "DeclSpec does not store an expr")(static_cast <bool> (isExprRep((TST) TypeSpecType) && "DeclSpec does not store an expr") ? void (0) : __assert_fail ("isExprRep((TST) TypeSpecType) && \"DeclSpec does not store an expr\"" , "clang/include/clang/Sema/DeclSpec.h", 530, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 531 | return ExprRep; | ||||
| 532 | } | ||||
| 533 | TemplateIdAnnotation *getRepAsTemplateId() const { | ||||
| 534 | assert(isTemplateIdRep((TST) TypeSpecType) &&(static_cast <bool> (isTemplateIdRep((TST) TypeSpecType ) && "DeclSpec does not store a template id") ? void ( 0) : __assert_fail ("isTemplateIdRep((TST) TypeSpecType) && \"DeclSpec does not store a template id\"" , "clang/include/clang/Sema/DeclSpec.h", 535, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 535 | "DeclSpec does not store a template id")(static_cast <bool> (isTemplateIdRep((TST) TypeSpecType ) && "DeclSpec does not store a template id") ? void ( 0) : __assert_fail ("isTemplateIdRep((TST) TypeSpecType) && \"DeclSpec does not store a template id\"" , "clang/include/clang/Sema/DeclSpec.h", 535, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 536 | return TemplateIdRep; | ||||
| 537 | } | ||||
| 538 | CXXScopeSpec &getTypeSpecScope() { return TypeScope; } | ||||
| 539 | const CXXScopeSpec &getTypeSpecScope() const { return TypeScope; } | ||||
| 540 | |||||
| 541 | SourceRange getSourceRange() const LLVM_READONLY__attribute__((__pure__)) { return Range; } | ||||
| 542 | SourceLocation getBeginLoc() const LLVM_READONLY__attribute__((__pure__)) { return Range.getBegin(); } | ||||
| 543 | SourceLocation getEndLoc() const LLVM_READONLY__attribute__((__pure__)) { return Range.getEnd(); } | ||||
| 544 | |||||
| 545 | SourceLocation getTypeSpecWidthLoc() const { return TSWRange.getBegin(); } | ||||
| 546 | SourceRange getTypeSpecWidthRange() const { return TSWRange; } | ||||
| 547 | SourceLocation getTypeSpecComplexLoc() const { return TSCLoc; } | ||||
| 548 | SourceLocation getTypeSpecSignLoc() const { return TSSLoc; } | ||||
| 549 | SourceLocation getTypeSpecTypeLoc() const { return TSTLoc; } | ||||
| 550 | SourceLocation getAltiVecLoc() const { return AltiVecLoc; } | ||||
| 551 | SourceLocation getTypeSpecSatLoc() const { return TSSatLoc; } | ||||
| 552 | |||||
| 553 | SourceLocation getTypeSpecTypeNameLoc() const { | ||||
| 554 | assert(isDeclRep((TST)TypeSpecType) || isTypeRep((TST)TypeSpecType) ||(static_cast <bool> (isDeclRep((TST)TypeSpecType) || isTypeRep ((TST)TypeSpecType) || isExprRep((TST)TypeSpecType)) ? void ( 0) : __assert_fail ("isDeclRep((TST)TypeSpecType) || isTypeRep((TST)TypeSpecType) || isExprRep((TST)TypeSpecType)" , "clang/include/clang/Sema/DeclSpec.h", 555, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 555 | isExprRep((TST)TypeSpecType))(static_cast <bool> (isDeclRep((TST)TypeSpecType) || isTypeRep ((TST)TypeSpecType) || isExprRep((TST)TypeSpecType)) ? void ( 0) : __assert_fail ("isDeclRep((TST)TypeSpecType) || isTypeRep((TST)TypeSpecType) || isExprRep((TST)TypeSpecType)" , "clang/include/clang/Sema/DeclSpec.h", 555, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 556 | return TSTNameLoc; | ||||
| 557 | } | ||||
| 558 | |||||
| 559 | SourceRange getTypeofParensRange() const { return TypeofParensRange; } | ||||
| 560 | void setTypeArgumentRange(SourceRange range) { TypeofParensRange = range; } | ||||
| 561 | |||||
| 562 | bool hasAutoTypeSpec() const { | ||||
| 563 | return (TypeSpecType == TST_auto || TypeSpecType == TST_auto_type || | ||||
| 564 | TypeSpecType == TST_decltype_auto); | ||||
| 565 | } | ||||
| 566 | |||||
| 567 | bool hasTagDefinition() const; | ||||
| 568 | |||||
| 569 | /// Turn a type-specifier-type into a string like "_Bool" or "union". | ||||
| 570 | static const char *getSpecifierName(DeclSpec::TST T, | ||||
| 571 | const PrintingPolicy &Policy); | ||||
| 572 | static const char *getSpecifierName(DeclSpec::TQ Q); | ||||
| 573 | static const char *getSpecifierName(TypeSpecifierSign S); | ||||
| 574 | static const char *getSpecifierName(DeclSpec::TSC C); | ||||
| 575 | static const char *getSpecifierName(TypeSpecifierWidth W); | ||||
| 576 | static const char *getSpecifierName(DeclSpec::SCS S); | ||||
| 577 | static const char *getSpecifierName(DeclSpec::TSCS S); | ||||
| 578 | static const char *getSpecifierName(ConstexprSpecKind C); | ||||
| 579 | |||||
| 580 | // type-qualifiers | ||||
| 581 | |||||
| 582 | /// getTypeQualifiers - Return a set of TQs. | ||||
| 583 | unsigned getTypeQualifiers() const { return TypeQualifiers; } | ||||
| 584 | SourceLocation getConstSpecLoc() const { return TQ_constLoc; } | ||||
| 585 | SourceLocation getRestrictSpecLoc() const { return TQ_restrictLoc; } | ||||
| 586 | SourceLocation getVolatileSpecLoc() const { return TQ_volatileLoc; } | ||||
| 587 | SourceLocation getAtomicSpecLoc() const { return TQ_atomicLoc; } | ||||
| 588 | SourceLocation getUnalignedSpecLoc() const { return TQ_unalignedLoc; } | ||||
| 589 | SourceLocation getPipeLoc() const { return TQ_pipeLoc; } | ||||
| 590 | |||||
| 591 | /// Clear out all of the type qualifiers. | ||||
| 592 | void ClearTypeQualifiers() { | ||||
| 593 | TypeQualifiers = 0; | ||||
| 594 | TQ_constLoc = SourceLocation(); | ||||
| 595 | TQ_restrictLoc = SourceLocation(); | ||||
| 596 | TQ_volatileLoc = SourceLocation(); | ||||
| 597 | TQ_atomicLoc = SourceLocation(); | ||||
| 598 | TQ_unalignedLoc = SourceLocation(); | ||||
| 599 | TQ_pipeLoc = SourceLocation(); | ||||
| 600 | } | ||||
| 601 | |||||
| 602 | // function-specifier | ||||
| 603 | bool isInlineSpecified() const { | ||||
| 604 | return FS_inline_specified | FS_forceinline_specified; | ||||
| 605 | } | ||||
| 606 | SourceLocation getInlineSpecLoc() const { | ||||
| 607 | return FS_inline_specified ? FS_inlineLoc : FS_forceinlineLoc; | ||||
| 608 | } | ||||
| 609 | |||||
| 610 | ExplicitSpecifier getExplicitSpecifier() const { | ||||
| 611 | return FS_explicit_specifier; | ||||
| 612 | } | ||||
| 613 | |||||
| 614 | bool isVirtualSpecified() const { return FS_virtual_specified; } | ||||
| 615 | SourceLocation getVirtualSpecLoc() const { return FS_virtualLoc; } | ||||
| 616 | |||||
| 617 | bool hasExplicitSpecifier() const { | ||||
| 618 | return FS_explicit_specifier.isSpecified(); | ||||
| 619 | } | ||||
| 620 | SourceLocation getExplicitSpecLoc() const { return FS_explicitLoc; } | ||||
| 621 | SourceRange getExplicitSpecRange() const { | ||||
| 622 | return FS_explicit_specifier.getExpr() | ||||
| 623 | ? SourceRange(FS_explicitLoc, FS_explicitCloseParenLoc) | ||||
| 624 | : SourceRange(FS_explicitLoc); | ||||
| 625 | } | ||||
| 626 | |||||
| 627 | bool isNoreturnSpecified() const { return FS_noreturn_specified; } | ||||
| 628 | SourceLocation getNoreturnSpecLoc() const { return FS_noreturnLoc; } | ||||
| 629 | |||||
| 630 | void ClearFunctionSpecs() { | ||||
| 631 | FS_inline_specified = false; | ||||
| 632 | FS_inlineLoc = SourceLocation(); | ||||
| 633 | FS_forceinline_specified = false; | ||||
| 634 | FS_forceinlineLoc = SourceLocation(); | ||||
| 635 | FS_virtual_specified = false; | ||||
| 636 | FS_virtualLoc = SourceLocation(); | ||||
| 637 | FS_explicit_specifier = ExplicitSpecifier(); | ||||
| 638 | FS_explicitLoc = SourceLocation(); | ||||
| 639 | FS_explicitCloseParenLoc = SourceLocation(); | ||||
| 640 | FS_noreturn_specified = false; | ||||
| 641 | FS_noreturnLoc = SourceLocation(); | ||||
| 642 | } | ||||
| 643 | |||||
| 644 | /// This method calls the passed in handler on each CVRU qual being | ||||
| 645 | /// set. | ||||
| 646 | /// Handle - a handler to be invoked. | ||||
| 647 | void forEachCVRUQualifier( | ||||
| 648 | llvm::function_ref<void(TQ, StringRef, SourceLocation)> Handle); | ||||
| 649 | |||||
| 650 | /// This method calls the passed in handler on each qual being | ||||
| 651 | /// set. | ||||
| 652 | /// Handle - a handler to be invoked. | ||||
| 653 | void forEachQualifier( | ||||
| 654 | llvm::function_ref<void(TQ, StringRef, SourceLocation)> Handle); | ||||
| 655 | |||||
| 656 | /// Return true if any type-specifier has been found. | ||||
| 657 | bool hasTypeSpecifier() const { | ||||
| 658 | return getTypeSpecType() != DeclSpec::TST_unspecified || | ||||
| 659 | getTypeSpecWidth() != TypeSpecifierWidth::Unspecified || | ||||
| 660 | getTypeSpecComplex() != DeclSpec::TSC_unspecified || | ||||
| 661 | getTypeSpecSign() != TypeSpecifierSign::Unspecified; | ||||
| 662 | } | ||||
| 663 | |||||
| 664 | /// Return a bitmask of which flavors of specifiers this | ||||
| 665 | /// DeclSpec includes. | ||||
| 666 | unsigned getParsedSpecifiers() const; | ||||
| 667 | |||||
| 668 | /// isEmpty - Return true if this declaration specifier is completely empty: | ||||
| 669 | /// no tokens were parsed in the production of it. | ||||
| 670 | bool isEmpty() const { | ||||
| 671 | return getParsedSpecifiers() == DeclSpec::PQ_None; | ||||
| 672 | } | ||||
| 673 | |||||
| 674 | void SetRangeStart(SourceLocation Loc) { Range.setBegin(Loc); } | ||||
| 675 | void SetRangeEnd(SourceLocation Loc) { Range.setEnd(Loc); } | ||||
| 676 | |||||
| 677 | /// These methods set the specified attribute of the DeclSpec and | ||||
| 678 | /// return false if there was no error. If an error occurs (for | ||||
| 679 | /// example, if we tried to set "auto" on a spec with "extern" | ||||
| 680 | /// already set), they return true and set PrevSpec and DiagID | ||||
| 681 | /// such that | ||||
| 682 | /// Diag(Loc, DiagID) << PrevSpec; | ||||
| 683 | /// will yield a useful result. | ||||
| 684 | /// | ||||
| 685 | /// TODO: use a more general approach that still allows these | ||||
| 686 | /// diagnostics to be ignored when desired. | ||||
| 687 | bool SetStorageClassSpec(Sema &S, SCS SC, SourceLocation Loc, | ||||
| 688 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 689 | const PrintingPolicy &Policy); | ||||
| 690 | bool SetStorageClassSpecThread(TSCS TSC, SourceLocation Loc, | ||||
| 691 | const char *&PrevSpec, unsigned &DiagID); | ||||
| 692 | bool SetTypeSpecWidth(TypeSpecifierWidth W, SourceLocation Loc, | ||||
| 693 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 694 | const PrintingPolicy &Policy); | ||||
| 695 | bool SetTypeSpecComplex(TSC C, SourceLocation Loc, const char *&PrevSpec, | ||||
| 696 | unsigned &DiagID); | ||||
| 697 | bool SetTypeSpecSign(TypeSpecifierSign S, SourceLocation Loc, | ||||
| 698 | const char *&PrevSpec, unsigned &DiagID); | ||||
| 699 | bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 700 | unsigned &DiagID, const PrintingPolicy &Policy); | ||||
| 701 | bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 702 | unsigned &DiagID, ParsedType Rep, | ||||
| 703 | const PrintingPolicy &Policy); | ||||
| 704 | bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 705 | unsigned &DiagID, TypeResult Rep, | ||||
| 706 | const PrintingPolicy &Policy) { | ||||
| 707 | if (Rep.isInvalid()) | ||||
| 708 | return SetTypeSpecError(); | ||||
| 709 | return SetTypeSpecType(T, Loc, PrevSpec, DiagID, Rep.get(), Policy); | ||||
| 710 | } | ||||
| 711 | bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 712 | unsigned &DiagID, Decl *Rep, bool Owned, | ||||
| 713 | const PrintingPolicy &Policy); | ||||
| 714 | bool SetTypeSpecType(TST T, SourceLocation TagKwLoc, | ||||
| 715 | SourceLocation TagNameLoc, const char *&PrevSpec, | ||||
| 716 | unsigned &DiagID, ParsedType Rep, | ||||
| 717 | const PrintingPolicy &Policy); | ||||
| 718 | bool SetTypeSpecType(TST T, SourceLocation TagKwLoc, | ||||
| 719 | SourceLocation TagNameLoc, const char *&PrevSpec, | ||||
| 720 | unsigned &DiagID, Decl *Rep, bool Owned, | ||||
| 721 | const PrintingPolicy &Policy); | ||||
| 722 | bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 723 | unsigned &DiagID, TemplateIdAnnotation *Rep, | ||||
| 724 | const PrintingPolicy &Policy); | ||||
| 725 | |||||
| 726 | bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 727 | unsigned &DiagID, Expr *Rep, | ||||
| 728 | const PrintingPolicy &policy); | ||||
| 729 | bool SetTypeAltiVecVector(bool isAltiVecVector, SourceLocation Loc, | ||||
| 730 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 731 | const PrintingPolicy &Policy); | ||||
| 732 | bool SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc, | ||||
| 733 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 734 | const PrintingPolicy &Policy); | ||||
| 735 | bool SetTypeAltiVecBool(bool isAltiVecBool, SourceLocation Loc, | ||||
| 736 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 737 | const PrintingPolicy &Policy); | ||||
| 738 | bool SetTypePipe(bool isPipe, SourceLocation Loc, | ||||
| 739 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 740 | const PrintingPolicy &Policy); | ||||
| 741 | bool SetBitIntType(SourceLocation KWLoc, Expr *BitWidth, | ||||
| 742 | const char *&PrevSpec, unsigned &DiagID, | ||||
| 743 | const PrintingPolicy &Policy); | ||||
| 744 | bool SetTypeSpecSat(SourceLocation Loc, const char *&PrevSpec, | ||||
| 745 | unsigned &DiagID); | ||||
| 746 | bool SetTypeSpecError(); | ||||
| 747 | void UpdateDeclRep(Decl *Rep) { | ||||
| 748 | assert(isDeclRep((TST) TypeSpecType))(static_cast <bool> (isDeclRep((TST) TypeSpecType)) ? void (0) : __assert_fail ("isDeclRep((TST) TypeSpecType)", "clang/include/clang/Sema/DeclSpec.h" , 748, __extension__ __PRETTY_FUNCTION__)); | ||||
| 749 | DeclRep = Rep; | ||||
| 750 | } | ||||
| 751 | void UpdateTypeRep(ParsedType Rep) { | ||||
| 752 | assert(isTypeRep((TST) TypeSpecType))(static_cast <bool> (isTypeRep((TST) TypeSpecType)) ? void (0) : __assert_fail ("isTypeRep((TST) TypeSpecType)", "clang/include/clang/Sema/DeclSpec.h" , 752, __extension__ __PRETTY_FUNCTION__)); | ||||
| 753 | TypeRep = Rep; | ||||
| 754 | } | ||||
| 755 | void UpdateExprRep(Expr *Rep) { | ||||
| 756 | assert(isExprRep((TST) TypeSpecType))(static_cast <bool> (isExprRep((TST) TypeSpecType)) ? void (0) : __assert_fail ("isExprRep((TST) TypeSpecType)", "clang/include/clang/Sema/DeclSpec.h" , 756, __extension__ __PRETTY_FUNCTION__)); | ||||
| 757 | ExprRep = Rep; | ||||
| 758 | } | ||||
| 759 | |||||
| 760 | bool SetTypeQual(TQ T, SourceLocation Loc); | ||||
| 761 | |||||
| 762 | bool SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec, | ||||
| 763 | unsigned &DiagID, const LangOptions &Lang); | ||||
| 764 | |||||
| 765 | bool setFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec, | ||||
| 766 | unsigned &DiagID); | ||||
| 767 | bool setFunctionSpecForceInline(SourceLocation Loc, const char *&PrevSpec, | ||||
| 768 | unsigned &DiagID); | ||||
| 769 | bool setFunctionSpecVirtual(SourceLocation Loc, const char *&PrevSpec, | ||||
| 770 | unsigned &DiagID); | ||||
| 771 | bool setFunctionSpecExplicit(SourceLocation Loc, const char *&PrevSpec, | ||||
| 772 | unsigned &DiagID, ExplicitSpecifier ExplicitSpec, | ||||
| 773 | SourceLocation CloseParenLoc); | ||||
| 774 | bool setFunctionSpecNoreturn(SourceLocation Loc, const char *&PrevSpec, | ||||
| 775 | unsigned &DiagID); | ||||
| 776 | |||||
| 777 | bool SetFriendSpec(SourceLocation Loc, const char *&PrevSpec, | ||||
| 778 | unsigned &DiagID); | ||||
| 779 | bool setModulePrivateSpec(SourceLocation Loc, const char *&PrevSpec, | ||||
| 780 | unsigned &DiagID); | ||||
| 781 | bool SetConstexprSpec(ConstexprSpecKind ConstexprKind, SourceLocation Loc, | ||||
| 782 | const char *&PrevSpec, unsigned &DiagID); | ||||
| 783 | |||||
| 784 | FriendSpecified isFriendSpecified() const { | ||||
| 785 | return static_cast<FriendSpecified>(Friend_specified); | ||||
| 786 | } | ||||
| 787 | |||||
| 788 | SourceLocation getFriendSpecLoc() const { return FriendLoc; } | ||||
| 789 | |||||
| 790 | bool isModulePrivateSpecified() const { return ModulePrivateLoc.isValid(); } | ||||
| 791 | SourceLocation getModulePrivateSpecLoc() const { return ModulePrivateLoc; } | ||||
| 792 | |||||
| 793 | ConstexprSpecKind getConstexprSpecifier() const { | ||||
| 794 | return ConstexprSpecKind(ConstexprSpecifier); | ||||
| 795 | } | ||||
| 796 | |||||
| 797 | SourceLocation getConstexprSpecLoc() const { return ConstexprLoc; } | ||||
| 798 | bool hasConstexprSpecifier() const { | ||||
| 799 | return getConstexprSpecifier() != ConstexprSpecKind::Unspecified; | ||||
| 800 | } | ||||
| 801 | |||||
| 802 | void ClearConstexprSpec() { | ||||
| 803 | ConstexprSpecifier = static_cast<unsigned>(ConstexprSpecKind::Unspecified); | ||||
| 804 | ConstexprLoc = SourceLocation(); | ||||
| 805 | } | ||||
| 806 | |||||
| 807 | AttributePool &getAttributePool() const { | ||||
| 808 | return Attrs.getPool(); | ||||
| 809 | } | ||||
| 810 | |||||
| 811 | /// Concatenates two attribute lists. | ||||
| 812 | /// | ||||
| 813 | /// The GCC attribute syntax allows for the following: | ||||
| 814 | /// | ||||
| 815 | /// \code | ||||
| 816 | /// short __attribute__(( unused, deprecated )) | ||||
| 817 | /// int __attribute__(( may_alias, aligned(16) )) var; | ||||
| 818 | /// \endcode | ||||
| 819 | /// | ||||
| 820 | /// This declares 4 attributes using 2 lists. The following syntax is | ||||
| 821 | /// also allowed and equivalent to the previous declaration. | ||||
| 822 | /// | ||||
| 823 | /// \code | ||||
| 824 | /// short __attribute__((unused)) __attribute__((deprecated)) | ||||
| 825 | /// int __attribute__((may_alias)) __attribute__((aligned(16))) var; | ||||
| 826 | /// \endcode | ||||
| 827 | /// | ||||
| 828 | void addAttributes(const ParsedAttributesView &AL) { | ||||
| 829 | Attrs.addAll(AL.begin(), AL.end()); | ||||
| 830 | } | ||||
| 831 | |||||
| 832 | bool hasAttributes() const { return !Attrs.empty(); } | ||||
| 833 | |||||
| 834 | ParsedAttributes &getAttributes() { return Attrs; } | ||||
| 835 | const ParsedAttributes &getAttributes() const { return Attrs; } | ||||
| 836 | |||||
| 837 | void takeAttributesFrom(ParsedAttributes &attrs) { | ||||
| 838 | Attrs.takeAllFrom(attrs); | ||||
| 839 | } | ||||
| 840 | |||||
| 841 | /// Finish - This does final analysis of the declspec, issuing diagnostics for | ||||
| 842 | /// things like "_Imaginary" (lacking an FP type). After calling this method, | ||||
| 843 | /// DeclSpec is guaranteed self-consistent, even if an error occurred. | ||||
| 844 | void Finish(Sema &S, const PrintingPolicy &Policy); | ||||
| 845 | |||||
| 846 | const WrittenBuiltinSpecs& getWrittenBuiltinSpecs() const { | ||||
| 847 | return writtenBS; | ||||
| 848 | } | ||||
| 849 | |||||
| 850 | ObjCDeclSpec *getObjCQualifiers() const { return ObjCQualifiers; } | ||||
| 851 | void setObjCQualifiers(ObjCDeclSpec *quals) { ObjCQualifiers = quals; } | ||||
| 852 | |||||
| 853 | /// Checks if this DeclSpec can stand alone, without a Declarator. | ||||
| 854 | /// | ||||
| 855 | /// Only tag declspecs can stand alone. | ||||
| 856 | bool isMissingDeclaratorOk(); | ||||
| 857 | }; | ||||
| 858 | |||||
| 859 | /// Captures information about "declaration specifiers" specific to | ||||
| 860 | /// Objective-C. | ||||
| 861 | class ObjCDeclSpec { | ||||
| 862 | public: | ||||
| 863 | /// ObjCDeclQualifier - Qualifier used on types in method | ||||
| 864 | /// declarations. Not all combinations are sensible. Parameters | ||||
| 865 | /// can be one of { in, out, inout } with one of { bycopy, byref }. | ||||
| 866 | /// Returns can either be { oneway } or not. | ||||
| 867 | /// | ||||
| 868 | /// This should be kept in sync with Decl::ObjCDeclQualifier. | ||||
| 869 | enum ObjCDeclQualifier { | ||||
| 870 | DQ_None = 0x0, | ||||
| 871 | DQ_In = 0x1, | ||||
| 872 | DQ_Inout = 0x2, | ||||
| 873 | DQ_Out = 0x4, | ||||
| 874 | DQ_Bycopy = 0x8, | ||||
| 875 | DQ_Byref = 0x10, | ||||
| 876 | DQ_Oneway = 0x20, | ||||
| 877 | DQ_CSNullability = 0x40 | ||||
| 878 | }; | ||||
| 879 | |||||
| 880 | ObjCDeclSpec() | ||||
| 881 | : objcDeclQualifier(DQ_None), | ||||
| 882 | PropertyAttributes(ObjCPropertyAttribute::kind_noattr), Nullability(0), | ||||
| 883 | GetterName(nullptr), SetterName(nullptr) {} | ||||
| 884 | |||||
| 885 | ObjCDeclQualifier getObjCDeclQualifier() const { | ||||
| 886 | return (ObjCDeclQualifier)objcDeclQualifier; | ||||
| 887 | } | ||||
| 888 | void setObjCDeclQualifier(ObjCDeclQualifier DQVal) { | ||||
| 889 | objcDeclQualifier = (ObjCDeclQualifier) (objcDeclQualifier | DQVal); | ||||
| 890 | } | ||||
| 891 | void clearObjCDeclQualifier(ObjCDeclQualifier DQVal) { | ||||
| 892 | objcDeclQualifier = (ObjCDeclQualifier) (objcDeclQualifier & ~DQVal); | ||||
| 893 | } | ||||
| 894 | |||||
| 895 | ObjCPropertyAttribute::Kind getPropertyAttributes() const { | ||||
| 896 | return ObjCPropertyAttribute::Kind(PropertyAttributes); | ||||
| 897 | } | ||||
| 898 | void setPropertyAttributes(ObjCPropertyAttribute::Kind PRVal) { | ||||
| 899 | PropertyAttributes = | ||||
| 900 | (ObjCPropertyAttribute::Kind)(PropertyAttributes | PRVal); | ||||
| 901 | } | ||||
| 902 | |||||
| 903 | NullabilityKind getNullability() const { | ||||
| 904 | assert((static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 907, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 905 | ((getObjCDeclQualifier() & DQ_CSNullability) ||(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 907, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 906 | (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) &&(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 907, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 907 | "Objective-C declspec doesn't have nullability")(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 907, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 908 | return static_cast<NullabilityKind>(Nullability); | ||||
| 909 | } | ||||
| 910 | |||||
| 911 | SourceLocation getNullabilityLoc() const { | ||||
| 912 | assert((static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 915, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 913 | ((getObjCDeclQualifier() & DQ_CSNullability) ||(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 915, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 914 | (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) &&(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 915, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 915 | "Objective-C declspec doesn't have nullability")(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Objective-C declspec doesn't have nullability" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Objective-C declspec doesn't have nullability\"" , "clang/include/clang/Sema/DeclSpec.h", 915, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 916 | return NullabilityLoc; | ||||
| 917 | } | ||||
| 918 | |||||
| 919 | void setNullability(SourceLocation loc, NullabilityKind kind) { | ||||
| 920 | assert((static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Set the nullability declspec or property attribute first" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Set the nullability declspec or property attribute first\"" , "clang/include/clang/Sema/DeclSpec.h", 923, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 921 | ((getObjCDeclQualifier() & DQ_CSNullability) ||(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Set the nullability declspec or property attribute first" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Set the nullability declspec or property attribute first\"" , "clang/include/clang/Sema/DeclSpec.h", 923, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 922 | (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) &&(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Set the nullability declspec or property attribute first" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Set the nullability declspec or property attribute first\"" , "clang/include/clang/Sema/DeclSpec.h", 923, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 923 | "Set the nullability declspec or property attribute first")(static_cast <bool> (((getObjCDeclQualifier() & DQ_CSNullability ) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability )) && "Set the nullability declspec or property attribute first" ) ? void (0) : __assert_fail ("((getObjCDeclQualifier() & DQ_CSNullability) || (getPropertyAttributes() & ObjCPropertyAttribute::kind_nullability)) && \"Set the nullability declspec or property attribute first\"" , "clang/include/clang/Sema/DeclSpec.h", 923, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 924 | Nullability = static_cast<unsigned>(kind); | ||||
| 925 | NullabilityLoc = loc; | ||||
| 926 | } | ||||
| 927 | |||||
| 928 | const IdentifierInfo *getGetterName() const { return GetterName; } | ||||
| 929 | IdentifierInfo *getGetterName() { return GetterName; } | ||||
| 930 | SourceLocation getGetterNameLoc() const { return GetterNameLoc; } | ||||
| 931 | void setGetterName(IdentifierInfo *name, SourceLocation loc) { | ||||
| 932 | GetterName = name; | ||||
| 933 | GetterNameLoc = loc; | ||||
| 934 | } | ||||
| 935 | |||||
| 936 | const IdentifierInfo *getSetterName() const { return SetterName; } | ||||
| 937 | IdentifierInfo *getSetterName() { return SetterName; } | ||||
| 938 | SourceLocation getSetterNameLoc() const { return SetterNameLoc; } | ||||
| 939 | void setSetterName(IdentifierInfo *name, SourceLocation loc) { | ||||
| 940 | SetterName = name; | ||||
| 941 | SetterNameLoc = loc; | ||||
| 942 | } | ||||
| 943 | |||||
| 944 | private: | ||||
| 945 | // FIXME: These two are unrelated and mutually exclusive. So perhaps | ||||
| 946 | // we can put them in a union to reflect their mutual exclusivity | ||||
| 947 | // (space saving is negligible). | ||||
| 948 | unsigned objcDeclQualifier : 7; | ||||
| 949 | |||||
| 950 | // NOTE: VC++ treats enums as signed, avoid using ObjCPropertyAttribute::Kind | ||||
| 951 | unsigned PropertyAttributes : NumObjCPropertyAttrsBits; | ||||
| 952 | |||||
| 953 | unsigned Nullability : 2; | ||||
| 954 | |||||
| 955 | SourceLocation NullabilityLoc; | ||||
| 956 | |||||
| 957 | IdentifierInfo *GetterName; // getter name or NULL if no getter | ||||
| 958 | IdentifierInfo *SetterName; // setter name or NULL if no setter | ||||
| 959 | SourceLocation GetterNameLoc; // location of the getter attribute's value | ||||
| 960 | SourceLocation SetterNameLoc; // location of the setter attribute's value | ||||
| 961 | |||||
| 962 | }; | ||||
| 963 | |||||
| 964 | /// Describes the kind of unqualified-id parsed. | ||||
| 965 | enum class UnqualifiedIdKind { | ||||
| 966 | /// An identifier. | ||||
| 967 | IK_Identifier, | ||||
| 968 | /// An overloaded operator name, e.g., operator+. | ||||
| 969 | IK_OperatorFunctionId, | ||||
| 970 | /// A conversion function name, e.g., operator int. | ||||
| 971 | IK_ConversionFunctionId, | ||||
| 972 | /// A user-defined literal name, e.g., operator "" _i. | ||||
| 973 | IK_LiteralOperatorId, | ||||
| 974 | /// A constructor name. | ||||
| 975 | IK_ConstructorName, | ||||
| 976 | /// A constructor named via a template-id. | ||||
| 977 | IK_ConstructorTemplateId, | ||||
| 978 | /// A destructor name. | ||||
| 979 | IK_DestructorName, | ||||
| 980 | /// A template-id, e.g., f<int>. | ||||
| 981 | IK_TemplateId, | ||||
| 982 | /// An implicit 'self' parameter | ||||
| 983 | IK_ImplicitSelfParam, | ||||
| 984 | /// A deduction-guide name (a template-name) | ||||
| 985 | IK_DeductionGuideName | ||||
| 986 | }; | ||||
| 987 | |||||
| 988 | /// Represents a C++ unqualified-id that has been parsed. | ||||
| 989 | class UnqualifiedId { | ||||
| 990 | private: | ||||
| 991 | UnqualifiedId(const UnqualifiedId &Other) = delete; | ||||
| 992 | const UnqualifiedId &operator=(const UnqualifiedId &) = delete; | ||||
| 993 | |||||
| 994 | /// Describes the kind of unqualified-id parsed. | ||||
| 995 | UnqualifiedIdKind Kind; | ||||
| 996 | |||||
| 997 | public: | ||||
| 998 | struct OFI { | ||||
| 999 | /// The kind of overloaded operator. | ||||
| 1000 | OverloadedOperatorKind Operator; | ||||
| 1001 | |||||
| 1002 | /// The source locations of the individual tokens that name | ||||
| 1003 | /// the operator, e.g., the "new", "[", and "]" tokens in | ||||
| 1004 | /// operator new []. | ||||
| 1005 | /// | ||||
| 1006 | /// Different operators have different numbers of tokens in their name, | ||||
| 1007 | /// up to three. Any remaining source locations in this array will be | ||||
| 1008 | /// set to an invalid value for operators with fewer than three tokens. | ||||
| 1009 | SourceLocation SymbolLocations[3]; | ||||
| 1010 | }; | ||||
| 1011 | |||||
| 1012 | /// Anonymous union that holds extra data associated with the | ||||
| 1013 | /// parsed unqualified-id. | ||||
| 1014 | union { | ||||
| 1015 | /// When Kind == IK_Identifier, the parsed identifier, or when | ||||
| 1016 | /// Kind == IK_UserLiteralId, the identifier suffix. | ||||
| 1017 | IdentifierInfo *Identifier; | ||||
| 1018 | |||||
| 1019 | /// When Kind == IK_OperatorFunctionId, the overloaded operator | ||||
| 1020 | /// that we parsed. | ||||
| 1021 | struct OFI OperatorFunctionId; | ||||
| 1022 | |||||
| 1023 | /// When Kind == IK_ConversionFunctionId, the type that the | ||||
| 1024 | /// conversion function names. | ||||
| 1025 | UnionParsedType ConversionFunctionId; | ||||
| 1026 | |||||
| 1027 | /// When Kind == IK_ConstructorName, the class-name of the type | ||||
| 1028 | /// whose constructor is being referenced. | ||||
| 1029 | UnionParsedType ConstructorName; | ||||
| 1030 | |||||
| 1031 | /// When Kind == IK_DestructorName, the type referred to by the | ||||
| 1032 | /// class-name. | ||||
| 1033 | UnionParsedType DestructorName; | ||||
| 1034 | |||||
| 1035 | /// When Kind == IK_DeductionGuideName, the parsed template-name. | ||||
| 1036 | UnionParsedTemplateTy TemplateName; | ||||
| 1037 | |||||
| 1038 | /// When Kind == IK_TemplateId or IK_ConstructorTemplateId, | ||||
| 1039 | /// the template-id annotation that contains the template name and | ||||
| 1040 | /// template arguments. | ||||
| 1041 | TemplateIdAnnotation *TemplateId; | ||||
| 1042 | }; | ||||
| 1043 | |||||
| 1044 | /// The location of the first token that describes this unqualified-id, | ||||
| 1045 | /// which will be the location of the identifier, "operator" keyword, | ||||
| 1046 | /// tilde (for a destructor), or the template name of a template-id. | ||||
| 1047 | SourceLocation StartLocation; | ||||
| 1048 | |||||
| 1049 | /// The location of the last token that describes this unqualified-id. | ||||
| 1050 | SourceLocation EndLocation; | ||||
| 1051 | |||||
| 1052 | UnqualifiedId() | ||||
| 1053 | : Kind(UnqualifiedIdKind::IK_Identifier), Identifier(nullptr) {} | ||||
| 1054 | |||||
| 1055 | /// Clear out this unqualified-id, setting it to default (invalid) | ||||
| 1056 | /// state. | ||||
| 1057 | void clear() { | ||||
| 1058 | Kind = UnqualifiedIdKind::IK_Identifier; | ||||
| 1059 | Identifier = nullptr; | ||||
| 1060 | StartLocation = SourceLocation(); | ||||
| 1061 | EndLocation = SourceLocation(); | ||||
| 1062 | } | ||||
| 1063 | |||||
| 1064 | /// Determine whether this unqualified-id refers to a valid name. | ||||
| 1065 | bool isValid() const { return StartLocation.isValid(); } | ||||
| 1066 | |||||
| 1067 | /// Determine whether this unqualified-id refers to an invalid name. | ||||
| 1068 | bool isInvalid() const { return !isValid(); } | ||||
| 1069 | |||||
| 1070 | /// Determine what kind of name we have. | ||||
| 1071 | UnqualifiedIdKind getKind() const { return Kind; } | ||||
| 1072 | |||||
| 1073 | /// Specify that this unqualified-id was parsed as an identifier. | ||||
| 1074 | /// | ||||
| 1075 | /// \param Id the parsed identifier. | ||||
| 1076 | /// \param IdLoc the location of the parsed identifier. | ||||
| 1077 | void setIdentifier(const IdentifierInfo *Id, SourceLocation IdLoc) { | ||||
| 1078 | Kind = UnqualifiedIdKind::IK_Identifier; | ||||
| 1079 | Identifier = const_cast<IdentifierInfo *>(Id); | ||||
| 1080 | StartLocation = EndLocation = IdLoc; | ||||
| 1081 | } | ||||
| 1082 | |||||
| 1083 | /// Specify that this unqualified-id was parsed as an | ||||
| 1084 | /// operator-function-id. | ||||
| 1085 | /// | ||||
| 1086 | /// \param OperatorLoc the location of the 'operator' keyword. | ||||
| 1087 | /// | ||||
| 1088 | /// \param Op the overloaded operator. | ||||
| 1089 | /// | ||||
| 1090 | /// \param SymbolLocations the locations of the individual operator symbols | ||||
| 1091 | /// in the operator. | ||||
| 1092 | void setOperatorFunctionId(SourceLocation OperatorLoc, | ||||
| 1093 | OverloadedOperatorKind Op, | ||||
| 1094 | SourceLocation SymbolLocations[3]); | ||||
| 1095 | |||||
| 1096 | /// Specify that this unqualified-id was parsed as a | ||||
| 1097 | /// conversion-function-id. | ||||
| 1098 | /// | ||||
| 1099 | /// \param OperatorLoc the location of the 'operator' keyword. | ||||
| 1100 | /// | ||||
| 1101 | /// \param Ty the type to which this conversion function is converting. | ||||
| 1102 | /// | ||||
| 1103 | /// \param EndLoc the location of the last token that makes up the type name. | ||||
| 1104 | void setConversionFunctionId(SourceLocation OperatorLoc, | ||||
| 1105 | ParsedType Ty, | ||||
| 1106 | SourceLocation EndLoc) { | ||||
| 1107 | Kind = UnqualifiedIdKind::IK_ConversionFunctionId; | ||||
| 1108 | StartLocation = OperatorLoc; | ||||
| 1109 | EndLocation = EndLoc; | ||||
| 1110 | ConversionFunctionId = Ty; | ||||
| 1111 | } | ||||
| 1112 | |||||
| 1113 | /// Specific that this unqualified-id was parsed as a | ||||
| 1114 | /// literal-operator-id. | ||||
| 1115 | /// | ||||
| 1116 | /// \param Id the parsed identifier. | ||||
| 1117 | /// | ||||
| 1118 | /// \param OpLoc the location of the 'operator' keyword. | ||||
| 1119 | /// | ||||
| 1120 | /// \param IdLoc the location of the identifier. | ||||
| 1121 | void setLiteralOperatorId(const IdentifierInfo *Id, SourceLocation OpLoc, | ||||
| 1122 | SourceLocation IdLoc) { | ||||
| 1123 | Kind = UnqualifiedIdKind::IK_LiteralOperatorId; | ||||
| 1124 | Identifier = const_cast<IdentifierInfo *>(Id); | ||||
| 1125 | StartLocation = OpLoc; | ||||
| 1126 | EndLocation = IdLoc; | ||||
| 1127 | } | ||||
| 1128 | |||||
| 1129 | /// Specify that this unqualified-id was parsed as a constructor name. | ||||
| 1130 | /// | ||||
| 1131 | /// \param ClassType the class type referred to by the constructor name. | ||||
| 1132 | /// | ||||
| 1133 | /// \param ClassNameLoc the location of the class name. | ||||
| 1134 | /// | ||||
| 1135 | /// \param EndLoc the location of the last token that makes up the type name. | ||||
| 1136 | void setConstructorName(ParsedType ClassType, | ||||
| 1137 | SourceLocation ClassNameLoc, | ||||
| 1138 | SourceLocation EndLoc) { | ||||
| 1139 | Kind = UnqualifiedIdKind::IK_ConstructorName; | ||||
| 1140 | StartLocation = ClassNameLoc; | ||||
| 1141 | EndLocation = EndLoc; | ||||
| 1142 | ConstructorName = ClassType; | ||||
| 1143 | } | ||||
| 1144 | |||||
| 1145 | /// Specify that this unqualified-id was parsed as a | ||||
| 1146 | /// template-id that names a constructor. | ||||
| 1147 | /// | ||||
| 1148 | /// \param TemplateId the template-id annotation that describes the parsed | ||||
| 1149 | /// template-id. This UnqualifiedId instance will take ownership of the | ||||
| 1150 | /// \p TemplateId and will free it on destruction. | ||||
| 1151 | void setConstructorTemplateId(TemplateIdAnnotation *TemplateId); | ||||
| 1152 | |||||
| 1153 | /// Specify that this unqualified-id was parsed as a destructor name. | ||||
| 1154 | /// | ||||
| 1155 | /// \param TildeLoc the location of the '~' that introduces the destructor | ||||
| 1156 | /// name. | ||||
| 1157 | /// | ||||
| 1158 | /// \param ClassType the name of the class referred to by the destructor name. | ||||
| 1159 | void setDestructorName(SourceLocation TildeLoc, | ||||
| 1160 | ParsedType ClassType, | ||||
| 1161 | SourceLocation EndLoc) { | ||||
| 1162 | Kind = UnqualifiedIdKind::IK_DestructorName; | ||||
| 1163 | StartLocation = TildeLoc; | ||||
| 1164 | EndLocation = EndLoc; | ||||
| 1165 | DestructorName = ClassType; | ||||
| 1166 | } | ||||
| 1167 | |||||
| 1168 | /// Specify that this unqualified-id was parsed as a template-id. | ||||
| 1169 | /// | ||||
| 1170 | /// \param TemplateId the template-id annotation that describes the parsed | ||||
| 1171 | /// template-id. This UnqualifiedId instance will take ownership of the | ||||
| 1172 | /// \p TemplateId and will free it on destruction. | ||||
| 1173 | void setTemplateId(TemplateIdAnnotation *TemplateId); | ||||
| 1174 | |||||
| 1175 | /// Specify that this unqualified-id was parsed as a template-name for | ||||
| 1176 | /// a deduction-guide. | ||||
| 1177 | /// | ||||
| 1178 | /// \param Template The parsed template-name. | ||||
| 1179 | /// \param TemplateLoc The location of the parsed template-name. | ||||
| 1180 | void setDeductionGuideName(ParsedTemplateTy Template, | ||||
| 1181 | SourceLocation TemplateLoc) { | ||||
| 1182 | Kind = UnqualifiedIdKind::IK_DeductionGuideName; | ||||
| 1183 | TemplateName = Template; | ||||
| 1184 | StartLocation = EndLocation = TemplateLoc; | ||||
| 1185 | } | ||||
| 1186 | |||||
| 1187 | /// Specify that this unqualified-id is an implicit 'self' | ||||
| 1188 | /// parameter. | ||||
| 1189 | /// | ||||
| 1190 | /// \param Id the identifier. | ||||
| 1191 | void setImplicitSelfParam(const IdentifierInfo *Id) { | ||||
| 1192 | Kind = UnqualifiedIdKind::IK_ImplicitSelfParam; | ||||
| 1193 | Identifier = const_cast<IdentifierInfo *>(Id); | ||||
| 1194 | StartLocation = EndLocation = SourceLocation(); | ||||
| 1195 | } | ||||
| 1196 | |||||
| 1197 | /// Return the source range that covers this unqualified-id. | ||||
| 1198 | SourceRange getSourceRange() const LLVM_READONLY__attribute__((__pure__)) { | ||||
| 1199 | return SourceRange(StartLocation, EndLocation); | ||||
| 1200 | } | ||||
| 1201 | SourceLocation getBeginLoc() const LLVM_READONLY__attribute__((__pure__)) { return StartLocation; } | ||||
| 1202 | SourceLocation getEndLoc() const LLVM_READONLY__attribute__((__pure__)) { return EndLocation; } | ||||
| 1203 | }; | ||||
| 1204 | |||||
| 1205 | /// A set of tokens that has been cached for later parsing. | ||||
| 1206 | typedef SmallVector<Token, 4> CachedTokens; | ||||
| 1207 | |||||
| 1208 | /// One instance of this struct is used for each type in a | ||||
| 1209 | /// declarator that is parsed. | ||||
| 1210 | /// | ||||
| 1211 | /// This is intended to be a small value object. | ||||
| 1212 | struct DeclaratorChunk { | ||||
| 1213 | DeclaratorChunk() {}; | ||||
| 1214 | |||||
| 1215 | enum { | ||||
| 1216 | Pointer, Reference, Array, Function, BlockPointer, MemberPointer, Paren, Pipe | ||||
| 1217 | } Kind; | ||||
| 1218 | |||||
| 1219 | /// Loc - The place where this type was defined. | ||||
| 1220 | SourceLocation Loc; | ||||
| 1221 | /// EndLoc - If valid, the place where this chunck ends. | ||||
| 1222 | SourceLocation EndLoc; | ||||
| 1223 | |||||
| 1224 | SourceRange getSourceRange() const { | ||||
| 1225 | if (EndLoc.isInvalid()) | ||||
| 1226 | return SourceRange(Loc, Loc); | ||||
| 1227 | return SourceRange(Loc, EndLoc); | ||||
| 1228 | } | ||||
| 1229 | |||||
| 1230 | ParsedAttributesView AttrList; | ||||
| 1231 | |||||
| 1232 | struct PointerTypeInfo { | ||||
| 1233 | /// The type qualifiers: const/volatile/restrict/unaligned/atomic. | ||||
| 1234 | unsigned TypeQuals : 5; | ||||
| 1235 | |||||
| 1236 | /// The location of the const-qualifier, if any. | ||||
| 1237 | SourceLocation ConstQualLoc; | ||||
| 1238 | |||||
| 1239 | /// The location of the volatile-qualifier, if any. | ||||
| 1240 | SourceLocation VolatileQualLoc; | ||||
| 1241 | |||||
| 1242 | /// The location of the restrict-qualifier, if any. | ||||
| 1243 | SourceLocation RestrictQualLoc; | ||||
| 1244 | |||||
| 1245 | /// The location of the _Atomic-qualifier, if any. | ||||
| 1246 | SourceLocation AtomicQualLoc; | ||||
| 1247 | |||||
| 1248 | /// The location of the __unaligned-qualifier, if any. | ||||
| 1249 | SourceLocation UnalignedQualLoc; | ||||
| 1250 | |||||
| 1251 | void destroy() { | ||||
| 1252 | } | ||||
| 1253 | }; | ||||
| 1254 | |||||
| 1255 | struct ReferenceTypeInfo { | ||||
| 1256 | /// The type qualifier: restrict. [GNU] C++ extension | ||||
| 1257 | bool HasRestrict : 1; | ||||
| 1258 | /// True if this is an lvalue reference, false if it's an rvalue reference. | ||||
| 1259 | bool LValueRef : 1; | ||||
| 1260 | void destroy() { | ||||
| 1261 | } | ||||
| 1262 | }; | ||||
| 1263 | |||||
| 1264 | struct ArrayTypeInfo { | ||||
| 1265 | /// The type qualifiers for the array: | ||||
| 1266 | /// const/volatile/restrict/__unaligned/_Atomic. | ||||
| 1267 | unsigned TypeQuals : 5; | ||||
| 1268 | |||||
| 1269 | /// True if this dimension included the 'static' keyword. | ||||
| 1270 | unsigned hasStatic : 1; | ||||
| 1271 | |||||
| 1272 | /// True if this dimension was [*]. In this case, NumElts is null. | ||||
| 1273 | unsigned isStar : 1; | ||||
| 1274 | |||||
| 1275 | /// This is the size of the array, or null if [] or [*] was specified. | ||||
| 1276 | /// Since the parser is multi-purpose, and we don't want to impose a root | ||||
| 1277 | /// expression class on all clients, NumElts is untyped. | ||||
| 1278 | Expr *NumElts; | ||||
| 1279 | |||||
| 1280 | void destroy() {} | ||||
| 1281 | }; | ||||
| 1282 | |||||
| 1283 | /// ParamInfo - An array of paraminfo objects is allocated whenever a function | ||||
| 1284 | /// declarator is parsed. There are two interesting styles of parameters | ||||
| 1285 | /// here: | ||||
| 1286 | /// K&R-style identifier lists and parameter type lists. K&R-style identifier | ||||
| 1287 | /// lists will have information about the identifier, but no type information. | ||||
| 1288 | /// Parameter type lists will have type info (if the actions module provides | ||||
| 1289 | /// it), but may have null identifier info: e.g. for 'void foo(int X, int)'. | ||||
| 1290 | struct ParamInfo { | ||||
| 1291 | IdentifierInfo *Ident; | ||||
| 1292 | SourceLocation IdentLoc; | ||||
| 1293 | Decl *Param; | ||||
| 1294 | |||||
| 1295 | /// DefaultArgTokens - When the parameter's default argument | ||||
| 1296 | /// cannot be parsed immediately (because it occurs within the | ||||
| 1297 | /// declaration of a member function), it will be stored here as a | ||||
| 1298 | /// sequence of tokens to be parsed once the class definition is | ||||
| 1299 | /// complete. Non-NULL indicates that there is a default argument. | ||||
| 1300 | std::unique_ptr<CachedTokens> DefaultArgTokens; | ||||
| 1301 | |||||
| 1302 | ParamInfo() = default; | ||||
| 1303 | ParamInfo(IdentifierInfo *ident, SourceLocation iloc, | ||||
| 1304 | Decl *param, | ||||
| 1305 | std::unique_ptr<CachedTokens> DefArgTokens = nullptr) | ||||
| 1306 | : Ident(ident), IdentLoc(iloc), Param(param), | ||||
| 1307 | DefaultArgTokens(std::move(DefArgTokens)) {} | ||||
| 1308 | }; | ||||
| 1309 | |||||
| 1310 | struct TypeAndRange { | ||||
| 1311 | ParsedType Ty; | ||||
| 1312 | SourceRange Range; | ||||
| 1313 | }; | ||||
| 1314 | |||||
| 1315 | struct FunctionTypeInfo { | ||||
| 1316 | /// hasPrototype - This is true if the function had at least one typed | ||||
| 1317 | /// parameter. If the function is () or (a,b,c), then it has no prototype, | ||||
| 1318 | /// and is treated as a K&R-style function. | ||||
| 1319 | unsigned hasPrototype : 1; | ||||
| 1320 | |||||
| 1321 | /// isVariadic - If this function has a prototype, and if that | ||||
| 1322 | /// proto ends with ',...)', this is true. When true, EllipsisLoc | ||||
| 1323 | /// contains the location of the ellipsis. | ||||
| 1324 | unsigned isVariadic : 1; | ||||
| 1325 | |||||
| 1326 | /// Can this declaration be a constructor-style initializer? | ||||
| 1327 | unsigned isAmbiguous : 1; | ||||
| 1328 | |||||
| 1329 | /// Whether the ref-qualifier (if any) is an lvalue reference. | ||||
| 1330 | /// Otherwise, it's an rvalue reference. | ||||
| 1331 | unsigned RefQualifierIsLValueRef : 1; | ||||
| 1332 | |||||
| 1333 | /// ExceptionSpecType - An ExceptionSpecificationType value. | ||||
| 1334 | unsigned ExceptionSpecType : 4; | ||||
| 1335 | |||||
| 1336 | /// DeleteParams - If this is true, we need to delete[] Params. | ||||
| 1337 | unsigned DeleteParams : 1; | ||||
| 1338 | |||||
| 1339 | /// HasTrailingReturnType - If this is true, a trailing return type was | ||||
| 1340 | /// specified. | ||||
| 1341 | unsigned HasTrailingReturnType : 1; | ||||
| 1342 | |||||
| 1343 | /// The location of the left parenthesis in the source. | ||||
| 1344 | SourceLocation LParenLoc; | ||||
| 1345 | |||||
| 1346 | /// When isVariadic is true, the location of the ellipsis in the source. | ||||
| 1347 | SourceLocation EllipsisLoc; | ||||
| 1348 | |||||
| 1349 | /// The location of the right parenthesis in the source. | ||||
| 1350 | SourceLocation RParenLoc; | ||||
| 1351 | |||||
| 1352 | /// NumParams - This is the number of formal parameters specified by the | ||||
| 1353 | /// declarator. | ||||
| 1354 | unsigned NumParams; | ||||
| 1355 | |||||
| 1356 | /// NumExceptionsOrDecls - This is the number of types in the | ||||
| 1357 | /// dynamic-exception-decl, if the function has one. In C, this is the | ||||
| 1358 | /// number of declarations in the function prototype. | ||||
| 1359 | unsigned NumExceptionsOrDecls; | ||||
| 1360 | |||||
| 1361 | /// The location of the ref-qualifier, if any. | ||||
| 1362 | /// | ||||
| 1363 | /// If this is an invalid location, there is no ref-qualifier. | ||||
| 1364 | SourceLocation RefQualifierLoc; | ||||
| 1365 | |||||
| 1366 | /// The location of the 'mutable' qualifer in a lambda-declarator, if | ||||
| 1367 | /// any. | ||||
| 1368 | SourceLocation MutableLoc; | ||||
| 1369 | |||||
| 1370 | /// The beginning location of the exception specification, if any. | ||||
| 1371 | SourceLocation ExceptionSpecLocBeg; | ||||
| 1372 | |||||
| 1373 | /// The end location of the exception specification, if any. | ||||
| 1374 | SourceLocation ExceptionSpecLocEnd; | ||||
| 1375 | |||||
| 1376 | /// Params - This is a pointer to a new[]'d array of ParamInfo objects that | ||||
| 1377 | /// describe the parameters specified by this function declarator. null if | ||||
| 1378 | /// there are no parameters specified. | ||||
| 1379 | ParamInfo *Params; | ||||
| 1380 | |||||
| 1381 | /// DeclSpec for the function with the qualifier related info. | ||||
| 1382 | DeclSpec *MethodQualifiers; | ||||
| 1383 | |||||
| 1384 | /// AttributeFactory for the MethodQualifiers. | ||||
| 1385 | AttributeFactory *QualAttrFactory; | ||||
| 1386 | |||||
| 1387 | union { | ||||
| 1388 | /// Pointer to a new[]'d array of TypeAndRange objects that | ||||
| 1389 | /// contain the types in the function's dynamic exception specification | ||||
| 1390 | /// and their locations, if there is one. | ||||
| 1391 | TypeAndRange *Exceptions; | ||||
| 1392 | |||||
| 1393 | /// Pointer to the expression in the noexcept-specifier of this | ||||
| 1394 | /// function, if it has one. | ||||
| 1395 | Expr *NoexceptExpr; | ||||
| 1396 | |||||
| 1397 | /// Pointer to the cached tokens for an exception-specification | ||||
| 1398 | /// that has not yet been parsed. | ||||
| 1399 | CachedTokens *ExceptionSpecTokens; | ||||
| 1400 | |||||
| 1401 | /// Pointer to a new[]'d array of declarations that need to be available | ||||
| 1402 | /// for lookup inside the function body, if one exists. Does not exist in | ||||
| 1403 | /// C++. | ||||
| 1404 | NamedDecl **DeclsInPrototype; | ||||
| 1405 | }; | ||||
| 1406 | |||||
| 1407 | /// If HasTrailingReturnType is true, this is the trailing return | ||||
| 1408 | /// type specified. | ||||
| 1409 | UnionParsedType TrailingReturnType; | ||||
| 1410 | |||||
| 1411 | /// If HasTrailingReturnType is true, this is the location of the trailing | ||||
| 1412 | /// return type. | ||||
| 1413 | SourceLocation TrailingReturnTypeLoc; | ||||
| 1414 | |||||
| 1415 | /// Reset the parameter list to having zero parameters. | ||||
| 1416 | /// | ||||
| 1417 | /// This is used in various places for error recovery. | ||||
| 1418 | void freeParams() { | ||||
| 1419 | for (unsigned I = 0; I < NumParams; ++I) | ||||
| 1420 | Params[I].DefaultArgTokens.reset(); | ||||
| 1421 | if (DeleteParams) { | ||||
| 1422 | delete[] Params; | ||||
| 1423 | DeleteParams = false; | ||||
| 1424 | } | ||||
| 1425 | NumParams = 0; | ||||
| 1426 | } | ||||
| 1427 | |||||
| 1428 | void destroy() { | ||||
| 1429 | freeParams(); | ||||
| 1430 | delete QualAttrFactory; | ||||
| 1431 | delete MethodQualifiers; | ||||
| 1432 | switch (getExceptionSpecType()) { | ||||
| 1433 | default: | ||||
| 1434 | break; | ||||
| 1435 | case EST_Dynamic: | ||||
| 1436 | delete[] Exceptions; | ||||
| 1437 | break; | ||||
| 1438 | case EST_Unparsed: | ||||
| 1439 | delete ExceptionSpecTokens; | ||||
| 1440 | break; | ||||
| 1441 | case EST_None: | ||||
| 1442 | if (NumExceptionsOrDecls != 0) | ||||
| 1443 | delete[] DeclsInPrototype; | ||||
| 1444 | break; | ||||
| 1445 | } | ||||
| 1446 | } | ||||
| 1447 | |||||
| 1448 | DeclSpec &getOrCreateMethodQualifiers() { | ||||
| 1449 | if (!MethodQualifiers) { | ||||
| 1450 | QualAttrFactory = new AttributeFactory(); | ||||
| 1451 | MethodQualifiers = new DeclSpec(*QualAttrFactory); | ||||
| 1452 | } | ||||
| 1453 | return *MethodQualifiers; | ||||
| 1454 | } | ||||
| 1455 | |||||
| 1456 | /// isKNRPrototype - Return true if this is a K&R style identifier list, | ||||
| 1457 | /// like "void foo(a,b,c)". In a function definition, this will be followed | ||||
| 1458 | /// by the parameter type definitions. | ||||
| 1459 | bool isKNRPrototype() const { return !hasPrototype && NumParams != 0; } | ||||
| 1460 | |||||
| 1461 | SourceLocation getLParenLoc() const { return LParenLoc; } | ||||
| 1462 | |||||
| 1463 | SourceLocation getEllipsisLoc() const { return EllipsisLoc; } | ||||
| 1464 | |||||
| 1465 | SourceLocation getRParenLoc() const { return RParenLoc; } | ||||
| 1466 | |||||
| 1467 | SourceLocation getExceptionSpecLocBeg() const { | ||||
| 1468 | return ExceptionSpecLocBeg; | ||||
| 1469 | } | ||||
| 1470 | |||||
| 1471 | SourceLocation getExceptionSpecLocEnd() const { | ||||
| 1472 | return ExceptionSpecLocEnd; | ||||
| 1473 | } | ||||
| 1474 | |||||
| 1475 | SourceRange getExceptionSpecRange() const { | ||||
| 1476 | return SourceRange(getExceptionSpecLocBeg(), getExceptionSpecLocEnd()); | ||||
| 1477 | } | ||||
| 1478 | |||||
| 1479 | /// Retrieve the location of the ref-qualifier, if any. | ||||
| 1480 | SourceLocation getRefQualifierLoc() const { return RefQualifierLoc; } | ||||
| 1481 | |||||
| 1482 | /// Retrieve the location of the 'const' qualifier. | ||||
| 1483 | SourceLocation getConstQualifierLoc() const { | ||||
| 1484 | assert(MethodQualifiers)(static_cast <bool> (MethodQualifiers) ? void (0) : __assert_fail ("MethodQualifiers", "clang/include/clang/Sema/DeclSpec.h", 1484 , __extension__ __PRETTY_FUNCTION__)); | ||||
| 1485 | return MethodQualifiers->getConstSpecLoc(); | ||||
| 1486 | } | ||||
| 1487 | |||||
| 1488 | /// Retrieve the location of the 'volatile' qualifier. | ||||
| 1489 | SourceLocation getVolatileQualifierLoc() const { | ||||
| 1490 | assert(MethodQualifiers)(static_cast <bool> (MethodQualifiers) ? void (0) : __assert_fail ("MethodQualifiers", "clang/include/clang/Sema/DeclSpec.h", 1490 , __extension__ __PRETTY_FUNCTION__)); | ||||
| 1491 | return MethodQualifiers->getVolatileSpecLoc(); | ||||
| 1492 | } | ||||
| 1493 | |||||
| 1494 | /// Retrieve the location of the 'restrict' qualifier. | ||||
| 1495 | SourceLocation getRestrictQualifierLoc() const { | ||||
| 1496 | assert(MethodQualifiers)(static_cast <bool> (MethodQualifiers) ? void (0) : __assert_fail ("MethodQualifiers", "clang/include/clang/Sema/DeclSpec.h", 1496 , __extension__ __PRETTY_FUNCTION__)); | ||||
| 1497 | return MethodQualifiers->getRestrictSpecLoc(); | ||||
| 1498 | } | ||||
| 1499 | |||||
| 1500 | /// Retrieve the location of the 'mutable' qualifier, if any. | ||||
| 1501 | SourceLocation getMutableLoc() const { return MutableLoc; } | ||||
| 1502 | |||||
| 1503 | /// Determine whether this function declaration contains a | ||||
| 1504 | /// ref-qualifier. | ||||
| 1505 | bool hasRefQualifier() const { return getRefQualifierLoc().isValid(); } | ||||
| 1506 | |||||
| 1507 | /// Determine whether this lambda-declarator contains a 'mutable' | ||||
| 1508 | /// qualifier. | ||||
| 1509 | bool hasMutableQualifier() const { return getMutableLoc().isValid(); } | ||||
| 1510 | |||||
| 1511 | /// Determine whether this method has qualifiers. | ||||
| 1512 | bool hasMethodTypeQualifiers() const { | ||||
| 1513 | return MethodQualifiers && (MethodQualifiers->getTypeQualifiers() || | ||||
| 1514 | MethodQualifiers->getAttributes().size()); | ||||
| 1515 | } | ||||
| 1516 | |||||
| 1517 | /// Get the type of exception specification this function has. | ||||
| 1518 | ExceptionSpecificationType getExceptionSpecType() const { | ||||
| 1519 | return static_cast<ExceptionSpecificationType>(ExceptionSpecType); | ||||
| 1520 | } | ||||
| 1521 | |||||
| 1522 | /// Get the number of dynamic exception specifications. | ||||
| 1523 | unsigned getNumExceptions() const { | ||||
| 1524 | assert(ExceptionSpecType != EST_None)(static_cast <bool> (ExceptionSpecType != EST_None) ? void (0) : __assert_fail ("ExceptionSpecType != EST_None", "clang/include/clang/Sema/DeclSpec.h" , 1524, __extension__ __PRETTY_FUNCTION__)); | ||||
| 1525 | return NumExceptionsOrDecls; | ||||
| 1526 | } | ||||
| 1527 | |||||
| 1528 | /// Get the non-parameter decls defined within this function | ||||
| 1529 | /// prototype. Typically these are tag declarations. | ||||
| 1530 | ArrayRef<NamedDecl *> getDeclsInPrototype() const { | ||||
| 1531 | assert(ExceptionSpecType == EST_None)(static_cast <bool> (ExceptionSpecType == EST_None) ? void (0) : __assert_fail ("ExceptionSpecType == EST_None", "clang/include/clang/Sema/DeclSpec.h" , 1531, __extension__ __PRETTY_FUNCTION__)); | ||||
| 1532 | return llvm::ArrayRef(DeclsInPrototype, NumExceptionsOrDecls); | ||||
| 1533 | } | ||||
| 1534 | |||||
| 1535 | /// Determine whether this function declarator had a | ||||
| 1536 | /// trailing-return-type. | ||||
| 1537 | bool hasTrailingReturnType() const { return HasTrailingReturnType; } | ||||
| 1538 | |||||
| 1539 | /// Get the trailing-return-type for this function declarator. | ||||
| 1540 | ParsedType getTrailingReturnType() const { | ||||
| 1541 | assert(HasTrailingReturnType)(static_cast <bool> (HasTrailingReturnType) ? void (0) : __assert_fail ("HasTrailingReturnType", "clang/include/clang/Sema/DeclSpec.h" , 1541, __extension__ __PRETTY_FUNCTION__)); | ||||
| 1542 | return TrailingReturnType; | ||||
| 1543 | } | ||||
| 1544 | |||||
| 1545 | /// Get the trailing-return-type location for this function declarator. | ||||
| 1546 | SourceLocation getTrailingReturnTypeLoc() const { | ||||
| 1547 | assert(HasTrailingReturnType)(static_cast <bool> (HasTrailingReturnType) ? void (0) : __assert_fail ("HasTrailingReturnType", "clang/include/clang/Sema/DeclSpec.h" , 1547, __extension__ __PRETTY_FUNCTION__)); | ||||
| 1548 | return TrailingReturnTypeLoc; | ||||
| 1549 | } | ||||
| 1550 | }; | ||||
| 1551 | |||||
| 1552 | struct BlockPointerTypeInfo { | ||||
| 1553 | /// For now, sema will catch these as invalid. | ||||
| 1554 | /// The type qualifiers: const/volatile/restrict/__unaligned/_Atomic. | ||||
| 1555 | unsigned TypeQuals : 5; | ||||
| 1556 | |||||
| 1557 | void destroy() { | ||||
| 1558 | } | ||||
| 1559 | }; | ||||
| 1560 | |||||
| 1561 | struct MemberPointerTypeInfo { | ||||
| 1562 | /// The type qualifiers: const/volatile/restrict/__unaligned/_Atomic. | ||||
| 1563 | unsigned TypeQuals : 5; | ||||
| 1564 | /// Location of the '*' token. | ||||
| 1565 | SourceLocation StarLoc; | ||||
| 1566 | // CXXScopeSpec has a constructor, so it can't be a direct member. | ||||
| 1567 | // So we need some pointer-aligned storage and a bit of trickery. | ||||
| 1568 | alignas(CXXScopeSpec) char ScopeMem[sizeof(CXXScopeSpec)]; | ||||
| 1569 | CXXScopeSpec &Scope() { | ||||
| 1570 | return *reinterpret_cast<CXXScopeSpec *>(ScopeMem); | ||||
| 1571 | } | ||||
| 1572 | const CXXScopeSpec &Scope() const { | ||||
| 1573 | return *reinterpret_cast<const CXXScopeSpec *>(ScopeMem); | ||||
| 1574 | } | ||||
| 1575 | void destroy() { | ||||
| 1576 | Scope().~CXXScopeSpec(); | ||||
| 1577 | } | ||||
| 1578 | }; | ||||
| 1579 | |||||
| 1580 | struct PipeTypeInfo { | ||||
| 1581 | /// The access writes. | ||||
| 1582 | unsigned AccessWrites : 3; | ||||
| 1583 | |||||
| 1584 | void destroy() {} | ||||
| 1585 | }; | ||||
| 1586 | |||||
| 1587 | union { | ||||
| 1588 | PointerTypeInfo Ptr; | ||||
| 1589 | ReferenceTypeInfo Ref; | ||||
| 1590 | ArrayTypeInfo Arr; | ||||
| 1591 | FunctionTypeInfo Fun; | ||||
| 1592 | BlockPointerTypeInfo Cls; | ||||
| 1593 | MemberPointerTypeInfo Mem; | ||||
| 1594 | PipeTypeInfo PipeInfo; | ||||
| 1595 | }; | ||||
| 1596 | |||||
| 1597 | void destroy() { | ||||
| 1598 | switch (Kind) { | ||||
| 1599 | case DeclaratorChunk::Function: return Fun.destroy(); | ||||
| 1600 | case DeclaratorChunk::Pointer: return Ptr.destroy(); | ||||
| 1601 | case DeclaratorChunk::BlockPointer: return Cls.destroy(); | ||||
| 1602 | case DeclaratorChunk::Reference: return Ref.destroy(); | ||||
| 1603 | case DeclaratorChunk::Array: return Arr.destroy(); | ||||
| 1604 | case DeclaratorChunk::MemberPointer: return Mem.destroy(); | ||||
| 1605 | case DeclaratorChunk::Paren: return; | ||||
| 1606 | case DeclaratorChunk::Pipe: return PipeInfo.destroy(); | ||||
| 1607 | } | ||||
| 1608 | } | ||||
| 1609 | |||||
| 1610 | /// If there are attributes applied to this declaratorchunk, return | ||||
| 1611 | /// them. | ||||
| 1612 | const ParsedAttributesView &getAttrs() const { return AttrList; } | ||||
| 1613 | ParsedAttributesView &getAttrs() { return AttrList; } | ||||
| 1614 | |||||
| 1615 | /// Return a DeclaratorChunk for a pointer. | ||||
| 1616 | static DeclaratorChunk getPointer(unsigned TypeQuals, SourceLocation Loc, | ||||
| 1617 | SourceLocation ConstQualLoc, | ||||
| 1618 | SourceLocation VolatileQualLoc, | ||||
| 1619 | SourceLocation RestrictQualLoc, | ||||
| 1620 | SourceLocation AtomicQualLoc, | ||||
| 1621 | SourceLocation UnalignedQualLoc) { | ||||
| 1622 | DeclaratorChunk I; | ||||
| 1623 | I.Kind = Pointer; | ||||
| 1624 | I.Loc = Loc; | ||||
| 1625 | new (&I.Ptr) PointerTypeInfo; | ||||
| 1626 | I.Ptr.TypeQuals = TypeQuals; | ||||
| 1627 | I.Ptr.ConstQualLoc = ConstQualLoc; | ||||
| 1628 | I.Ptr.VolatileQualLoc = VolatileQualLoc; | ||||
| 1629 | I.Ptr.RestrictQualLoc = RestrictQualLoc; | ||||
| 1630 | I.Ptr.AtomicQualLoc = AtomicQualLoc; | ||||
| 1631 | I.Ptr.UnalignedQualLoc = UnalignedQualLoc; | ||||
| 1632 | return I; | ||||
| 1633 | } | ||||
| 1634 | |||||
| 1635 | /// Return a DeclaratorChunk for a reference. | ||||
| 1636 | static DeclaratorChunk getReference(unsigned TypeQuals, SourceLocation Loc, | ||||
| 1637 | bool lvalue) { | ||||
| 1638 | DeclaratorChunk I; | ||||
| 1639 | I.Kind = Reference; | ||||
| 1640 | I.Loc = Loc; | ||||
| 1641 | I.Ref.HasRestrict = (TypeQuals & DeclSpec::TQ_restrict) != 0; | ||||
| 1642 | I.Ref.LValueRef = lvalue; | ||||
| 1643 | return I; | ||||
| 1644 | } | ||||
| 1645 | |||||
| 1646 | /// Return a DeclaratorChunk for an array. | ||||
| 1647 | static DeclaratorChunk getArray(unsigned TypeQuals, | ||||
| 1648 | bool isStatic, bool isStar, Expr *NumElts, | ||||
| 1649 | SourceLocation LBLoc, SourceLocation RBLoc) { | ||||
| 1650 | DeclaratorChunk I; | ||||
| 1651 | I.Kind = Array; | ||||
| 1652 | I.Loc = LBLoc; | ||||
| 1653 | I.EndLoc = RBLoc; | ||||
| 1654 | I.Arr.TypeQuals = TypeQuals; | ||||
| 1655 | I.Arr.hasStatic = isStatic; | ||||
| 1656 | I.Arr.isStar = isStar; | ||||
| 1657 | I.Arr.NumElts = NumElts; | ||||
| 1658 | return I; | ||||
| 1659 | } | ||||
| 1660 | |||||
| 1661 | /// DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function. | ||||
| 1662 | /// "TheDeclarator" is the declarator that this will be added to. | ||||
| 1663 | static DeclaratorChunk getFunction(bool HasProto, | ||||
| 1664 | bool IsAmbiguous, | ||||
| 1665 | SourceLocation LParenLoc, | ||||
| 1666 | ParamInfo *Params, unsigned NumParams, | ||||
| 1667 | SourceLocation EllipsisLoc, | ||||
| 1668 | SourceLocation RParenLoc, | ||||
| 1669 | bool RefQualifierIsLvalueRef, | ||||
| 1670 | SourceLocation RefQualifierLoc, | ||||
| 1671 | SourceLocation MutableLoc, | ||||
| 1672 | ExceptionSpecificationType ESpecType, | ||||
| 1673 | SourceRange ESpecRange, | ||||
| 1674 | ParsedType *Exceptions, | ||||
| 1675 | SourceRange *ExceptionRanges, | ||||
| 1676 | unsigned NumExceptions, | ||||
| 1677 | Expr *NoexceptExpr, | ||||
| 1678 | CachedTokens *ExceptionSpecTokens, | ||||
| 1679 | ArrayRef<NamedDecl *> DeclsInPrototype, | ||||
| 1680 | SourceLocation LocalRangeBegin, | ||||
| 1681 | SourceLocation LocalRangeEnd, | ||||
| 1682 | Declarator &TheDeclarator, | ||||
| 1683 | TypeResult TrailingReturnType = | ||||
| 1684 | TypeResult(), | ||||
| 1685 | SourceLocation TrailingReturnTypeLoc = | ||||
| 1686 | SourceLocation(), | ||||
| 1687 | DeclSpec *MethodQualifiers = nullptr); | ||||
| 1688 | |||||
| 1689 | /// Return a DeclaratorChunk for a block. | ||||
| 1690 | static DeclaratorChunk getBlockPointer(unsigned TypeQuals, | ||||
| 1691 | SourceLocation Loc) { | ||||
| 1692 | DeclaratorChunk I; | ||||
| 1693 | I.Kind = BlockPointer; | ||||
| 1694 | I.Loc = Loc; | ||||
| 1695 | I.Cls.TypeQuals = TypeQuals; | ||||
| 1696 | return I; | ||||
| 1697 | } | ||||
| 1698 | |||||
| 1699 | /// Return a DeclaratorChunk for a block. | ||||
| 1700 | static DeclaratorChunk getPipe(unsigned TypeQuals, | ||||
| 1701 | SourceLocation Loc) { | ||||
| 1702 | DeclaratorChunk I; | ||||
| 1703 | I.Kind = Pipe; | ||||
| 1704 | I.Loc = Loc; | ||||
| 1705 | I.Cls.TypeQuals = TypeQuals; | ||||
| 1706 | return I; | ||||
| 1707 | } | ||||
| 1708 | |||||
| 1709 | static DeclaratorChunk getMemberPointer(const CXXScopeSpec &SS, | ||||
| 1710 | unsigned TypeQuals, | ||||
| 1711 | SourceLocation StarLoc, | ||||
| 1712 | SourceLocation EndLoc) { | ||||
| 1713 | DeclaratorChunk I; | ||||
| 1714 | I.Kind = MemberPointer; | ||||
| 1715 | I.Loc = SS.getBeginLoc(); | ||||
| 1716 | I.EndLoc = EndLoc; | ||||
| 1717 | new (&I.Mem) MemberPointerTypeInfo; | ||||
| 1718 | I.Mem.StarLoc = StarLoc; | ||||
| 1719 | I.Mem.TypeQuals = TypeQuals; | ||||
| 1720 | new (I.Mem.ScopeMem) CXXScopeSpec(SS); | ||||
| 1721 | return I; | ||||
| 1722 | } | ||||
| 1723 | |||||
| 1724 | /// Return a DeclaratorChunk for a paren. | ||||
| 1725 | static DeclaratorChunk getParen(SourceLocation LParenLoc, | ||||
| 1726 | SourceLocation RParenLoc) { | ||||
| 1727 | DeclaratorChunk I; | ||||
| 1728 | I.Kind = Paren; | ||||
| 1729 | I.Loc = LParenLoc; | ||||
| 1730 | I.EndLoc = RParenLoc; | ||||
| 1731 | return I; | ||||
| 1732 | } | ||||
| 1733 | |||||
| 1734 | bool isParen() const { | ||||
| 1735 | return Kind == Paren; | ||||
| 1736 | } | ||||
| 1737 | }; | ||||
| 1738 | |||||
| 1739 | /// A parsed C++17 decomposition declarator of the form | ||||
| 1740 | /// '[' identifier-list ']' | ||||
| 1741 | class DecompositionDeclarator { | ||||
| 1742 | public: | ||||
| 1743 | struct Binding { | ||||
| 1744 | IdentifierInfo *Name; | ||||
| 1745 | SourceLocation NameLoc; | ||||
| 1746 | }; | ||||
| 1747 | |||||
| 1748 | private: | ||||
| 1749 | /// The locations of the '[' and ']' tokens. | ||||
| 1750 | SourceLocation LSquareLoc, RSquareLoc; | ||||
| 1751 | |||||
| 1752 | /// The bindings. | ||||
| 1753 | Binding *Bindings; | ||||
| 1754 | unsigned NumBindings : 31; | ||||
| 1755 | unsigned DeleteBindings : 1; | ||||
| 1756 | |||||
| 1757 | friend class Declarator; | ||||
| 1758 | |||||
| 1759 | public: | ||||
| 1760 | DecompositionDeclarator() | ||||
| 1761 | : Bindings(nullptr), NumBindings(0), DeleteBindings(false) {} | ||||
| 1762 | DecompositionDeclarator(const DecompositionDeclarator &G) = delete; | ||||
| 1763 | DecompositionDeclarator &operator=(const DecompositionDeclarator &G) = delete; | ||||
| 1764 | ~DecompositionDeclarator() { | ||||
| 1765 | if (DeleteBindings) | ||||
| 1766 | delete[] Bindings; | ||||
| 1767 | } | ||||
| 1768 | |||||
| 1769 | void clear() { | ||||
| 1770 | LSquareLoc = RSquareLoc = SourceLocation(); | ||||
| 1771 | if (DeleteBindings) | ||||
| 1772 | delete[] Bindings; | ||||
| 1773 | Bindings = nullptr; | ||||
| 1774 | NumBindings = 0; | ||||
| 1775 | DeleteBindings = false; | ||||
| 1776 | } | ||||
| 1777 | |||||
| 1778 | ArrayRef<Binding> bindings() const { | ||||
| 1779 | return llvm::ArrayRef(Bindings, NumBindings); | ||||
| 1780 | } | ||||
| 1781 | |||||
| 1782 | bool isSet() const { return LSquareLoc.isValid(); } | ||||
| 1783 | |||||
| 1784 | SourceLocation getLSquareLoc() const { return LSquareLoc; } | ||||
| 1785 | SourceLocation getRSquareLoc() const { return RSquareLoc; } | ||||
| 1786 | SourceRange getSourceRange() const { | ||||
| 1787 | return SourceRange(LSquareLoc, RSquareLoc); | ||||
| 1788 | } | ||||
| 1789 | }; | ||||
| 1790 | |||||
| 1791 | /// Described the kind of function definition (if any) provided for | ||||
| 1792 | /// a function. | ||||
| 1793 | enum class FunctionDefinitionKind { | ||||
| 1794 | Declaration, | ||||
| 1795 | Definition, | ||||
| 1796 | Defaulted, | ||||
| 1797 | Deleted | ||||
| 1798 | }; | ||||
| 1799 | |||||
| 1800 | enum class DeclaratorContext { | ||||
| 1801 | File, // File scope declaration. | ||||
| 1802 | Prototype, // Within a function prototype. | ||||
| 1803 | ObjCResult, // An ObjC method result type. | ||||
| 1804 | ObjCParameter, // An ObjC method parameter type. | ||||
| 1805 | KNRTypeList, // K&R type definition list for formals. | ||||
| 1806 | TypeName, // Abstract declarator for types. | ||||
| 1807 | FunctionalCast, // Type in a C++ functional cast expression. | ||||
| 1808 | Member, // Struct/Union field. | ||||
| 1809 | Block, // Declaration within a block in a function. | ||||
| 1810 | ForInit, // Declaration within first part of a for loop. | ||||
| 1811 | SelectionInit, // Declaration within optional init stmt of if/switch. | ||||
| 1812 | Condition, // Condition declaration in a C++ if/switch/while/for. | ||||
| 1813 | TemplateParam, // Within a template parameter list. | ||||
| 1814 | CXXNew, // C++ new-expression. | ||||
| 1815 | CXXCatch, // C++ catch exception-declaration | ||||
| 1816 | ObjCCatch, // Objective-C catch exception-declaration | ||||
| 1817 | BlockLiteral, // Block literal declarator. | ||||
| 1818 | LambdaExpr, // Lambda-expression declarator. | ||||
| 1819 | LambdaExprParameter, // Lambda-expression parameter declarator. | ||||
| 1820 | ConversionId, // C++ conversion-type-id. | ||||
| 1821 | TrailingReturn, // C++11 trailing-type-specifier. | ||||
| 1822 | TrailingReturnVar, // C++11 trailing-type-specifier for variable. | ||||
| 1823 | TemplateArg, // Any template argument (in template argument list). | ||||
| 1824 | TemplateTypeArg, // Template type argument (in default argument). | ||||
| 1825 | AliasDecl, // C++11 alias-declaration. | ||||
| 1826 | AliasTemplate, // C++11 alias-declaration template. | ||||
| 1827 | RequiresExpr, // C++2a requires-expression. | ||||
| 1828 | Association // C11 _Generic selection expression association. | ||||
| 1829 | }; | ||||
| 1830 | |||||
| 1831 | // Describes whether the current context is a context where an implicit | ||||
| 1832 | // typename is allowed (C++2a [temp.res]p5]). | ||||
| 1833 | enum class ImplicitTypenameContext { | ||||
| 1834 | No, | ||||
| 1835 | Yes, | ||||
| 1836 | }; | ||||
| 1837 | |||||
| 1838 | /// Information about one declarator, including the parsed type | ||||
| 1839 | /// information and the identifier. | ||||
| 1840 | /// | ||||
| 1841 | /// When the declarator is fully formed, this is turned into the appropriate | ||||
| 1842 | /// Decl object. | ||||
| 1843 | /// | ||||
| 1844 | /// Declarators come in two types: normal declarators and abstract declarators. | ||||
| 1845 | /// Abstract declarators are used when parsing types, and don't have an | ||||
| 1846 | /// identifier. Normal declarators do have ID's. | ||||
| 1847 | /// | ||||
| 1848 | /// Instances of this class should be a transient object that lives on the | ||||
| 1849 | /// stack, not objects that are allocated in large quantities on the heap. | ||||
| 1850 | class Declarator { | ||||
| 1851 | |||||
| 1852 | private: | ||||
| 1853 | const DeclSpec &DS; | ||||
| 1854 | CXXScopeSpec SS; | ||||
| 1855 | UnqualifiedId Name; | ||||
| 1856 | SourceRange Range; | ||||
| 1857 | |||||
| 1858 | /// Where we are parsing this declarator. | ||||
| 1859 | DeclaratorContext Context; | ||||
| 1860 | |||||
| 1861 | /// The C++17 structured binding, if any. This is an alternative to a Name. | ||||
| 1862 | DecompositionDeclarator BindingGroup; | ||||
| 1863 | |||||
| 1864 | /// DeclTypeInfo - This holds each type that the declarator includes as it is | ||||
| 1865 | /// parsed. This is pushed from the identifier out, which means that element | ||||
| 1866 | /// #0 will be the most closely bound to the identifier, and | ||||
| 1867 | /// DeclTypeInfo.back() will be the least closely bound. | ||||
| 1868 | SmallVector<DeclaratorChunk, 8> DeclTypeInfo; | ||||
| 1869 | |||||
| 1870 | /// InvalidType - Set by Sema::GetTypeForDeclarator(). | ||||
| 1871 | unsigned InvalidType : 1; | ||||
| 1872 | |||||
| 1873 | /// GroupingParens - Set by Parser::ParseParenDeclarator(). | ||||
| 1874 | unsigned GroupingParens : 1; | ||||
| 1875 | |||||
| 1876 | /// FunctionDefinition - Is this Declarator for a function or member | ||||
| 1877 | /// definition and, if so, what kind? | ||||
| 1878 | /// | ||||
| 1879 | /// Actually a FunctionDefinitionKind. | ||||
| 1880 | unsigned FunctionDefinition : 2; | ||||
| 1881 | |||||
| 1882 | /// Is this Declarator a redeclaration? | ||||
| 1883 | unsigned Redeclaration : 1; | ||||
| 1884 | |||||
| 1885 | /// true if the declaration is preceded by \c __extension__. | ||||
| 1886 | unsigned Extension : 1; | ||||
| 1887 | |||||
| 1888 | /// Indicates whether this is an Objective-C instance variable. | ||||
| 1889 | unsigned ObjCIvar : 1; | ||||
| 1890 | |||||
| 1891 | /// Indicates whether this is an Objective-C 'weak' property. | ||||
| 1892 | unsigned ObjCWeakProperty : 1; | ||||
| 1893 | |||||
| 1894 | /// Indicates whether the InlineParams / InlineBindings storage has been used. | ||||
| 1895 | unsigned InlineStorageUsed : 1; | ||||
| 1896 | |||||
| 1897 | /// Indicates whether this declarator has an initializer. | ||||
| 1898 | unsigned HasInitializer : 1; | ||||
| 1899 | |||||
| 1900 | /// Attributes attached to the declarator. | ||||
| 1901 | ParsedAttributes Attrs; | ||||
| 1902 | |||||
| 1903 | /// Attributes attached to the declaration. See also documentation for the | ||||
| 1904 | /// corresponding constructor parameter. | ||||
| 1905 | const ParsedAttributesView &DeclarationAttrs; | ||||
| 1906 | |||||
| 1907 | /// The asm label, if specified. | ||||
| 1908 | Expr *AsmLabel; | ||||
| 1909 | |||||
| 1910 | /// \brief The constraint-expression specified by the trailing | ||||
| 1911 | /// requires-clause, or null if no such clause was specified. | ||||
| 1912 | Expr *TrailingRequiresClause; | ||||
| 1913 | |||||
| 1914 | /// If this declarator declares a template, its template parameter lists. | ||||
| 1915 | ArrayRef<TemplateParameterList *> TemplateParameterLists; | ||||
| 1916 | |||||
| 1917 | /// If the declarator declares an abbreviated function template, the innermost | ||||
| 1918 | /// template parameter list containing the invented and explicit template | ||||
| 1919 | /// parameters (if any). | ||||
| 1920 | TemplateParameterList *InventedTemplateParameterList; | ||||
| 1921 | |||||
| 1922 | #ifndef _MSC_VER | ||||
| 1923 | union { | ||||
| 1924 | #endif | ||||
| 1925 | /// InlineParams - This is a local array used for the first function decl | ||||
| 1926 | /// chunk to avoid going to the heap for the common case when we have one | ||||
| 1927 | /// function chunk in the declarator. | ||||
| 1928 | DeclaratorChunk::ParamInfo InlineParams[16]; | ||||
| 1929 | DecompositionDeclarator::Binding InlineBindings[16]; | ||||
| 1930 | #ifndef _MSC_VER | ||||
| 1931 | }; | ||||
| 1932 | #endif | ||||
| 1933 | |||||
| 1934 | /// If this is the second or subsequent declarator in this declaration, | ||||
| 1935 | /// the location of the comma before this declarator. | ||||
| 1936 | SourceLocation CommaLoc; | ||||
| 1937 | |||||
| 1938 | /// If provided, the source location of the ellipsis used to describe | ||||
| 1939 | /// this declarator as a parameter pack. | ||||
| 1940 | SourceLocation EllipsisLoc; | ||||
| 1941 | |||||
| 1942 | friend struct DeclaratorChunk; | ||||
| 1943 | |||||
| 1944 | public: | ||||
| 1945 | /// `DS` and `DeclarationAttrs` must outlive the `Declarator`. In particular, | ||||
| 1946 | /// take care not to pass temporary objects for these parameters. | ||||
| 1947 | /// | ||||
| 1948 | /// `DeclarationAttrs` contains [[]] attributes from the | ||||
| 1949 | /// attribute-specifier-seq at the beginning of a declaration, which appertain | ||||
| 1950 | /// to the declared entity itself. Attributes with other syntax (e.g. GNU) | ||||
| 1951 | /// should not be placed in this attribute list; if they occur at the | ||||
| 1952 | /// beginning of a declaration, they apply to the `DeclSpec` and should be | ||||
| 1953 | /// attached to that instead. | ||||
| 1954 | /// | ||||
| 1955 | /// Here is an example of an attribute associated with a declaration: | ||||
| 1956 | /// | ||||
| 1957 | /// [[deprecated]] int x, y; | ||||
| 1958 | /// | ||||
| 1959 | /// This attribute appertains to all of the entities declared in the | ||||
| 1960 | /// declaration, i.e. `x` and `y` in this case. | ||||
| 1961 | Declarator(const DeclSpec &DS, const ParsedAttributesView &DeclarationAttrs, | ||||
| 1962 | DeclaratorContext C) | ||||
| 1963 | : DS(DS), Range(DS.getSourceRange()), Context(C), | ||||
| 1964 | InvalidType(DS.getTypeSpecType() == DeclSpec::TST_error), | ||||
| 1965 | GroupingParens(false), FunctionDefinition(static_cast<unsigned>( | ||||
| 1966 | FunctionDefinitionKind::Declaration)), | ||||
| 1967 | Redeclaration(false), Extension(false), ObjCIvar(false), | ||||
| 1968 | ObjCWeakProperty(false), InlineStorageUsed(false), | ||||
| 1969 | HasInitializer(false), Attrs(DS.getAttributePool().getFactory()), | ||||
| 1970 | DeclarationAttrs(DeclarationAttrs), AsmLabel(nullptr), | ||||
| 1971 | TrailingRequiresClause(nullptr), | ||||
| 1972 | InventedTemplateParameterList(nullptr) { | ||||
| 1973 | assert(llvm::all_of(DeclarationAttrs,(static_cast <bool> (llvm::all_of(DeclarationAttrs, []( const ParsedAttr &AL) { return AL.isStandardAttributeSyntax (); }) && "DeclarationAttrs may only contain [[]] attributes" ) ? void (0) : __assert_fail ("llvm::all_of(DeclarationAttrs, [](const ParsedAttr &AL) { return AL.isStandardAttributeSyntax(); }) && \"DeclarationAttrs may only contain [[]] attributes\"" , "clang/include/clang/Sema/DeclSpec.h", 1977, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 1974 | [](const ParsedAttr &AL) {(static_cast <bool> (llvm::all_of(DeclarationAttrs, []( const ParsedAttr &AL) { return AL.isStandardAttributeSyntax (); }) && "DeclarationAttrs may only contain [[]] attributes" ) ? void (0) : __assert_fail ("llvm::all_of(DeclarationAttrs, [](const ParsedAttr &AL) { return AL.isStandardAttributeSyntax(); }) && \"DeclarationAttrs may only contain [[]] attributes\"" , "clang/include/clang/Sema/DeclSpec.h", 1977, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 1975 | return AL.isStandardAttributeSyntax();(static_cast <bool> (llvm::all_of(DeclarationAttrs, []( const ParsedAttr &AL) { return AL.isStandardAttributeSyntax (); }) && "DeclarationAttrs may only contain [[]] attributes" ) ? void (0) : __assert_fail ("llvm::all_of(DeclarationAttrs, [](const ParsedAttr &AL) { return AL.isStandardAttributeSyntax(); }) && \"DeclarationAttrs may only contain [[]] attributes\"" , "clang/include/clang/Sema/DeclSpec.h", 1977, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 1976 | }) &&(static_cast <bool> (llvm::all_of(DeclarationAttrs, []( const ParsedAttr &AL) { return AL.isStandardAttributeSyntax (); }) && "DeclarationAttrs may only contain [[]] attributes" ) ? void (0) : __assert_fail ("llvm::all_of(DeclarationAttrs, [](const ParsedAttr &AL) { return AL.isStandardAttributeSyntax(); }) && \"DeclarationAttrs may only contain [[]] attributes\"" , "clang/include/clang/Sema/DeclSpec.h", 1977, __extension__ __PRETTY_FUNCTION__ )) | ||||
| 1977 | "DeclarationAttrs may only contain [[]] attributes")(static_cast <bool> (llvm::all_of(DeclarationAttrs, []( const ParsedAttr &AL) { return AL.isStandardAttributeSyntax (); }) && "DeclarationAttrs may only contain [[]] attributes" ) ? void (0) : __assert_fail ("llvm::all_of(DeclarationAttrs, [](const ParsedAttr &AL) { return AL.isStandardAttributeSyntax(); }) && \"DeclarationAttrs may only contain [[]] attributes\"" , "clang/include/clang/Sema/DeclSpec.h", 1977, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 1978 | } | ||||
| 1979 | |||||
| 1980 | ~Declarator() { | ||||
| 1981 | clear(); | ||||
| 1982 | } | ||||
| 1983 | /// getDeclSpec - Return the declaration-specifier that this declarator was | ||||
| 1984 | /// declared with. | ||||
| 1985 | const DeclSpec &getDeclSpec() const { return DS; } | ||||
| 1986 | |||||
| 1987 | /// getMutableDeclSpec - Return a non-const version of the DeclSpec. This | ||||
| 1988 | /// should be used with extreme care: declspecs can often be shared between | ||||
| 1989 | /// multiple declarators, so mutating the DeclSpec affects all of the | ||||
| 1990 | /// Declarators. This should only be done when the declspec is known to not | ||||
| 1991 | /// be shared or when in error recovery etc. | ||||
| 1992 | DeclSpec &getMutableDeclSpec() { return const_cast<DeclSpec &>(DS); } | ||||
| 1993 | |||||
| 1994 | AttributePool &getAttributePool() const { | ||||
| 1995 | return Attrs.getPool(); | ||||
| 1996 | } | ||||
| 1997 | |||||
| 1998 | /// getCXXScopeSpec - Return the C++ scope specifier (global scope or | ||||
| 1999 | /// nested-name-specifier) that is part of the declarator-id. | ||||
| 2000 | const CXXScopeSpec &getCXXScopeSpec() const { return SS; } | ||||
| 2001 | CXXScopeSpec &getCXXScopeSpec() { return SS; } | ||||
| 2002 | |||||
| 2003 | /// Retrieve the name specified by this declarator. | ||||
| 2004 | UnqualifiedId &getName() { return Name; } | ||||
| 2005 | |||||
| 2006 | const DecompositionDeclarator &getDecompositionDeclarator() const { | ||||
| 2007 | return BindingGroup; | ||||
| 2008 | } | ||||
| 2009 | |||||
| 2010 | DeclaratorContext getContext() const { return Context; } | ||||
| 2011 | |||||
| 2012 | bool isPrototypeContext() const { | ||||
| 2013 | return (Context == DeclaratorContext::Prototype || | ||||
| 2014 | Context == DeclaratorContext::ObjCParameter || | ||||
| 2015 | Context == DeclaratorContext::ObjCResult || | ||||
| 2016 | Context == DeclaratorContext::LambdaExprParameter); | ||||
| 2017 | } | ||||
| 2018 | |||||
| 2019 | /// Get the source range that spans this declarator. | ||||
| 2020 | SourceRange getSourceRange() const LLVM_READONLY__attribute__((__pure__)) { return Range; } | ||||
| 2021 | SourceLocation getBeginLoc() const LLVM_READONLY__attribute__((__pure__)) { return Range.getBegin(); } | ||||
| 2022 | SourceLocation getEndLoc() const LLVM_READONLY__attribute__((__pure__)) { return Range.getEnd(); } | ||||
| 2023 | |||||
| 2024 | void SetSourceRange(SourceRange R) { Range = R; } | ||||
| 2025 | /// SetRangeBegin - Set the start of the source range to Loc, unless it's | ||||
| 2026 | /// invalid. | ||||
| 2027 | void SetRangeBegin(SourceLocation Loc) { | ||||
| 2028 | if (!Loc.isInvalid()) | ||||
| 2029 | Range.setBegin(Loc); | ||||
| 2030 | } | ||||
| 2031 | /// SetRangeEnd - Set the end of the source range to Loc, unless it's invalid. | ||||
| 2032 | void SetRangeEnd(SourceLocation Loc) { | ||||
| 2033 | if (!Loc.isInvalid()) | ||||
| 2034 | Range.setEnd(Loc); | ||||
| 2035 | } | ||||
| 2036 | /// ExtendWithDeclSpec - Extend the declarator source range to include the | ||||
| 2037 | /// given declspec, unless its location is invalid. Adopts the range start if | ||||
| 2038 | /// the current range start is invalid. | ||||
| 2039 | void ExtendWithDeclSpec(const DeclSpec &DS) { | ||||
| 2040 | SourceRange SR = DS.getSourceRange(); | ||||
| 2041 | if (Range.getBegin().isInvalid()) | ||||
| 2042 | Range.setBegin(SR.getBegin()); | ||||
| 2043 | if (!SR.getEnd().isInvalid()) | ||||
| 2044 | Range.setEnd(SR.getEnd()); | ||||
| 2045 | } | ||||
| 2046 | |||||
| 2047 | /// Reset the contents of this Declarator. | ||||
| 2048 | void clear() { | ||||
| 2049 | SS.clear(); | ||||
| 2050 | Name.clear(); | ||||
| 2051 | Range = DS.getSourceRange(); | ||||
| 2052 | BindingGroup.clear(); | ||||
| 2053 | |||||
| 2054 | for (unsigned i = 0, e = DeclTypeInfo.size(); i != e; ++i) | ||||
| 2055 | DeclTypeInfo[i].destroy(); | ||||
| 2056 | DeclTypeInfo.clear(); | ||||
| 2057 | Attrs.clear(); | ||||
| 2058 | AsmLabel = nullptr; | ||||
| 2059 | InlineStorageUsed = false; | ||||
| 2060 | HasInitializer = false; | ||||
| 2061 | ObjCIvar = false; | ||||
| 2062 | ObjCWeakProperty = false; | ||||
| 2063 | CommaLoc = SourceLocation(); | ||||
| 2064 | EllipsisLoc = SourceLocation(); | ||||
| 2065 | } | ||||
| 2066 | |||||
| 2067 | /// mayOmitIdentifier - Return true if the identifier is either optional or | ||||
| 2068 | /// not allowed. This is true for typenames, prototypes, and template | ||||
| 2069 | /// parameter lists. | ||||
| 2070 | bool mayOmitIdentifier() const { | ||||
| 2071 | switch (Context) { | ||||
| 2072 | case DeclaratorContext::File: | ||||
| 2073 | case DeclaratorContext::KNRTypeList: | ||||
| 2074 | case DeclaratorContext::Member: | ||||
| 2075 | case DeclaratorContext::Block: | ||||
| 2076 | case DeclaratorContext::ForInit: | ||||
| 2077 | case DeclaratorContext::SelectionInit: | ||||
| 2078 | case DeclaratorContext::Condition: | ||||
| 2079 | return false; | ||||
| 2080 | |||||
| 2081 | case DeclaratorContext::TypeName: | ||||
| 2082 | case DeclaratorContext::FunctionalCast: | ||||
| 2083 | case DeclaratorContext::AliasDecl: | ||||
| 2084 | case DeclaratorContext::AliasTemplate: | ||||
| 2085 | case DeclaratorContext::Prototype: | ||||
| 2086 | case DeclaratorContext::LambdaExprParameter: | ||||
| 2087 | case DeclaratorContext::ObjCParameter: | ||||
| 2088 | case DeclaratorContext::ObjCResult: | ||||
| 2089 | case DeclaratorContext::TemplateParam: | ||||
| 2090 | case DeclaratorContext::CXXNew: | ||||
| 2091 | case DeclaratorContext::CXXCatch: | ||||
| 2092 | case DeclaratorContext::ObjCCatch: | ||||
| 2093 | case DeclaratorContext::BlockLiteral: | ||||
| 2094 | case DeclaratorContext::LambdaExpr: | ||||
| 2095 | case DeclaratorContext::ConversionId: | ||||
| 2096 | case DeclaratorContext::TemplateArg: | ||||
| 2097 | case DeclaratorContext::TemplateTypeArg: | ||||
| 2098 | case DeclaratorContext::TrailingReturn: | ||||
| 2099 | case DeclaratorContext::TrailingReturnVar: | ||||
| 2100 | case DeclaratorContext::RequiresExpr: | ||||
| 2101 | case DeclaratorContext::Association: | ||||
| 2102 | return true; | ||||
| 2103 | } | ||||
| 2104 | llvm_unreachable("unknown context kind!")::llvm::llvm_unreachable_internal("unknown context kind!", "clang/include/clang/Sema/DeclSpec.h" , 2104); | ||||
| 2105 | } | ||||
| 2106 | |||||
| 2107 | /// mayHaveIdentifier - Return true if the identifier is either optional or | ||||
| 2108 | /// required. This is true for normal declarators and prototypes, but not | ||||
| 2109 | /// typenames. | ||||
| 2110 | bool mayHaveIdentifier() const { | ||||
| 2111 | switch (Context) { | ||||
| 2112 | case DeclaratorContext::File: | ||||
| 2113 | case DeclaratorContext::KNRTypeList: | ||||
| 2114 | case DeclaratorContext::Member: | ||||
| 2115 | case DeclaratorContext::Block: | ||||
| 2116 | case DeclaratorContext::ForInit: | ||||
| 2117 | case DeclaratorContext::SelectionInit: | ||||
| 2118 | case DeclaratorContext::Condition: | ||||
| 2119 | case DeclaratorContext::Prototype: | ||||
| 2120 | case DeclaratorContext::LambdaExprParameter: | ||||
| 2121 | case DeclaratorContext::TemplateParam: | ||||
| 2122 | case DeclaratorContext::CXXCatch: | ||||
| 2123 | case DeclaratorContext::ObjCCatch: | ||||
| 2124 | case DeclaratorContext::RequiresExpr: | ||||
| 2125 | return true; | ||||
| 2126 | |||||
| 2127 | case DeclaratorContext::TypeName: | ||||
| 2128 | case DeclaratorContext::FunctionalCast: | ||||
| 2129 | case DeclaratorContext::CXXNew: | ||||
| 2130 | case DeclaratorContext::AliasDecl: | ||||
| 2131 | case DeclaratorContext::AliasTemplate: | ||||
| 2132 | case DeclaratorContext::ObjCParameter: | ||||
| 2133 | case DeclaratorContext::ObjCResult: | ||||
| 2134 | case DeclaratorContext::BlockLiteral: | ||||
| 2135 | case DeclaratorContext::LambdaExpr: | ||||
| 2136 | case DeclaratorContext::ConversionId: | ||||
| 2137 | case DeclaratorContext::TemplateArg: | ||||
| 2138 | case DeclaratorContext::TemplateTypeArg: | ||||
| 2139 | case DeclaratorContext::TrailingReturn: | ||||
| 2140 | case DeclaratorContext::TrailingReturnVar: | ||||
| 2141 | case DeclaratorContext::Association: | ||||
| 2142 | return false; | ||||
| 2143 | } | ||||
| 2144 | llvm_unreachable("unknown context kind!")::llvm::llvm_unreachable_internal("unknown context kind!", "clang/include/clang/Sema/DeclSpec.h" , 2144); | ||||
| 2145 | } | ||||
| 2146 | |||||
| 2147 | /// Return true if the context permits a C++17 decomposition declarator. | ||||
| 2148 | bool mayHaveDecompositionDeclarator() const { | ||||
| 2149 | switch (Context) { | ||||
| 2150 | case DeclaratorContext::File: | ||||
| 2151 | // FIXME: It's not clear that the proposal meant to allow file-scope | ||||
| 2152 | // structured bindings, but it does. | ||||
| 2153 | case DeclaratorContext::Block: | ||||
| 2154 | case DeclaratorContext::ForInit: | ||||
| 2155 | case DeclaratorContext::SelectionInit: | ||||
| 2156 | case DeclaratorContext::Condition: | ||||
| 2157 | return true; | ||||
| 2158 | |||||
| 2159 | case DeclaratorContext::Member: | ||||
| 2160 | case DeclaratorContext::Prototype: | ||||
| 2161 | case DeclaratorContext::TemplateParam: | ||||
| 2162 | case DeclaratorContext::RequiresExpr: | ||||
| 2163 | // Maybe one day... | ||||
| 2164 | return false; | ||||
| 2165 | |||||
| 2166 | // These contexts don't allow any kind of non-abstract declarator. | ||||
| 2167 | case DeclaratorContext::KNRTypeList: | ||||
| 2168 | case DeclaratorContext::TypeName: | ||||
| 2169 | case DeclaratorContext::FunctionalCast: | ||||
| 2170 | case DeclaratorContext::AliasDecl: | ||||
| 2171 | case DeclaratorContext::AliasTemplate: | ||||
| 2172 | case DeclaratorContext::LambdaExprParameter: | ||||
| 2173 | case DeclaratorContext::ObjCParameter: | ||||
| 2174 | case DeclaratorContext::ObjCResult: | ||||
| 2175 | case DeclaratorContext::CXXNew: | ||||
| 2176 | case DeclaratorContext::CXXCatch: | ||||
| 2177 | case DeclaratorContext::ObjCCatch: | ||||
| 2178 | case DeclaratorContext::BlockLiteral: | ||||
| 2179 | case DeclaratorContext::LambdaExpr: | ||||
| 2180 | case DeclaratorContext::ConversionId: | ||||
| 2181 | case DeclaratorContext::TemplateArg: | ||||
| 2182 | case DeclaratorContext::TemplateTypeArg: | ||||
| 2183 | case DeclaratorContext::TrailingReturn: | ||||
| 2184 | case DeclaratorContext::TrailingReturnVar: | ||||
| 2185 | case DeclaratorContext::Association: | ||||
| 2186 | return false; | ||||
| 2187 | } | ||||
| 2188 | llvm_unreachable("unknown context kind!")::llvm::llvm_unreachable_internal("unknown context kind!", "clang/include/clang/Sema/DeclSpec.h" , 2188); | ||||
| 2189 | } | ||||
| 2190 | |||||
| 2191 | /// mayBeFollowedByCXXDirectInit - Return true if the declarator can be | ||||
| 2192 | /// followed by a C++ direct initializer, e.g. "int x(1);". | ||||
| 2193 | bool mayBeFollowedByCXXDirectInit() const { | ||||
| 2194 | if (hasGroupingParens()) return false; | ||||
| 2195 | |||||
| 2196 | if (getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) | ||||
| 2197 | return false; | ||||
| 2198 | |||||
| 2199 | if (getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_extern && | ||||
| 2200 | Context != DeclaratorContext::File) | ||||
| 2201 | return false; | ||||
| 2202 | |||||
| 2203 | // Special names can't have direct initializers. | ||||
| 2204 | if (Name.getKind() != UnqualifiedIdKind::IK_Identifier) | ||||
| 2205 | return false; | ||||
| 2206 | |||||
| 2207 | switch (Context) { | ||||
| 2208 | case DeclaratorContext::File: | ||||
| 2209 | case DeclaratorContext::Block: | ||||
| 2210 | case DeclaratorContext::ForInit: | ||||
| 2211 | case DeclaratorContext::SelectionInit: | ||||
| 2212 | case DeclaratorContext::TrailingReturnVar: | ||||
| 2213 | return true; | ||||
| 2214 | |||||
| 2215 | case DeclaratorContext::Condition: | ||||
| 2216 | // This may not be followed by a direct initializer, but it can't be a | ||||
| 2217 | // function declaration either, and we'd prefer to perform a tentative | ||||
| 2218 | // parse in order to produce the right diagnostic. | ||||
| 2219 | return true; | ||||
| 2220 | |||||
| 2221 | case DeclaratorContext::KNRTypeList: | ||||
| 2222 | case DeclaratorContext::Member: | ||||
| 2223 | case DeclaratorContext::Prototype: | ||||
| 2224 | case DeclaratorContext::LambdaExprParameter: | ||||
| 2225 | case DeclaratorContext::ObjCParameter: | ||||
| 2226 | case DeclaratorContext::ObjCResult: | ||||
| 2227 | case DeclaratorContext::TemplateParam: | ||||
| 2228 | case DeclaratorContext::CXXCatch: | ||||
| 2229 | case DeclaratorContext::ObjCCatch: | ||||
| 2230 | case DeclaratorContext::TypeName: | ||||
| 2231 | case DeclaratorContext::FunctionalCast: // FIXME | ||||
| 2232 | case DeclaratorContext::CXXNew: | ||||
| 2233 | case DeclaratorContext::AliasDecl: | ||||
| 2234 | case DeclaratorContext::AliasTemplate: | ||||
| 2235 | case DeclaratorContext::BlockLiteral: | ||||
| 2236 | case DeclaratorContext::LambdaExpr: | ||||
| 2237 | case DeclaratorContext::ConversionId: | ||||
| 2238 | case DeclaratorContext::TemplateArg: | ||||
| 2239 | case DeclaratorContext::TemplateTypeArg: | ||||
| 2240 | case DeclaratorContext::TrailingReturn: | ||||
| 2241 | case DeclaratorContext::RequiresExpr: | ||||
| 2242 | case DeclaratorContext::Association: | ||||
| 2243 | return false; | ||||
| 2244 | } | ||||
| 2245 | llvm_unreachable("unknown context kind!")::llvm::llvm_unreachable_internal("unknown context kind!", "clang/include/clang/Sema/DeclSpec.h" , 2245); | ||||
| 2246 | } | ||||
| 2247 | |||||
| 2248 | /// isPastIdentifier - Return true if we have parsed beyond the point where | ||||
| 2249 | /// the name would appear. (This may happen even if we haven't actually parsed | ||||
| 2250 | /// a name, perhaps because this context doesn't require one.) | ||||
| 2251 | bool isPastIdentifier() const { return Name.isValid(); } | ||||
| 2252 | |||||
| 2253 | /// hasName - Whether this declarator has a name, which might be an | ||||
| 2254 | /// identifier (accessible via getIdentifier()) or some kind of | ||||
| 2255 | /// special C++ name (constructor, destructor, etc.), or a structured | ||||
| 2256 | /// binding (which is not exactly a name, but occupies the same position). | ||||
| 2257 | bool hasName() const { | ||||
| 2258 | return Name.getKind() != UnqualifiedIdKind::IK_Identifier || | ||||
| 2259 | Name.Identifier || isDecompositionDeclarator(); | ||||
| 2260 | } | ||||
| 2261 | |||||
| 2262 | /// Return whether this declarator is a decomposition declarator. | ||||
| 2263 | bool isDecompositionDeclarator() const { | ||||
| 2264 | return BindingGroup.isSet(); | ||||
| 2265 | } | ||||
| 2266 | |||||
| 2267 | IdentifierInfo *getIdentifier() const { | ||||
| 2268 | if (Name.getKind() == UnqualifiedIdKind::IK_Identifier) | ||||
| 2269 | return Name.Identifier; | ||||
| 2270 | |||||
| 2271 | return nullptr; | ||||
| 2272 | } | ||||
| 2273 | SourceLocation getIdentifierLoc() const { return Name.StartLocation; } | ||||
| 2274 | |||||
| 2275 | /// Set the name of this declarator to be the given identifier. | ||||
| 2276 | void SetIdentifier(IdentifierInfo *Id, SourceLocation IdLoc) { | ||||
| 2277 | Name.setIdentifier(Id, IdLoc); | ||||
| 2278 | } | ||||
| 2279 | |||||
| 2280 | /// Set the decomposition bindings for this declarator. | ||||
| 2281 | void | ||||
| 2282 | setDecompositionBindings(SourceLocation LSquareLoc, | ||||
| 2283 | ArrayRef<DecompositionDeclarator::Binding> Bindings, | ||||
| 2284 | SourceLocation RSquareLoc); | ||||
| 2285 | |||||
| 2286 | /// AddTypeInfo - Add a chunk to this declarator. Also extend the range to | ||||
| 2287 | /// EndLoc, which should be the last token of the chunk. | ||||
| 2288 | /// This function takes attrs by R-Value reference because it takes ownership | ||||
| 2289 | /// of those attributes from the parameter. | ||||
| 2290 | void AddTypeInfo(const DeclaratorChunk &TI, ParsedAttributes &&attrs, | ||||
| 2291 | SourceLocation EndLoc) { | ||||
| 2292 | DeclTypeInfo.push_back(TI); | ||||
| 2293 | DeclTypeInfo.back().getAttrs().addAll(attrs.begin(), attrs.end()); | ||||
| 2294 | getAttributePool().takeAllFrom(attrs.getPool()); | ||||
| 2295 | |||||
| 2296 | if (!EndLoc.isInvalid()) | ||||
| 2297 | SetRangeEnd(EndLoc); | ||||
| 2298 | } | ||||
| 2299 | |||||
| 2300 | /// AddTypeInfo - Add a chunk to this declarator. Also extend the range to | ||||
| 2301 | /// EndLoc, which should be the last token of the chunk. | ||||
| 2302 | void AddTypeInfo(const DeclaratorChunk &TI, SourceLocation EndLoc) { | ||||
| 2303 | DeclTypeInfo.push_back(TI); | ||||
| 2304 | |||||
| 2305 | if (!EndLoc.isInvalid()) | ||||
| 2306 | SetRangeEnd(EndLoc); | ||||
| 2307 | } | ||||
| 2308 | |||||
| 2309 | /// Add a new innermost chunk to this declarator. | ||||
| 2310 | void AddInnermostTypeInfo(const DeclaratorChunk &TI) { | ||||
| 2311 | DeclTypeInfo.insert(DeclTypeInfo.begin(), TI); | ||||
| 2312 | } | ||||
| 2313 | |||||
| 2314 | /// Return the number of types applied to this declarator. | ||||
| 2315 | unsigned getNumTypeObjects() const { return DeclTypeInfo.size(); } | ||||
| 2316 | |||||
| 2317 | /// Return the specified TypeInfo from this declarator. TypeInfo #0 is | ||||
| 2318 | /// closest to the identifier. | ||||
| 2319 | const DeclaratorChunk &getTypeObject(unsigned i) const { | ||||
| 2320 | assert(i < DeclTypeInfo.size() && "Invalid type chunk")(static_cast <bool> (i < DeclTypeInfo.size() && "Invalid type chunk") ? void (0) : __assert_fail ("i < DeclTypeInfo.size() && \"Invalid type chunk\"" , "clang/include/clang/Sema/DeclSpec.h", 2320, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 2321 | return DeclTypeInfo[i]; | ||||
| 2322 | } | ||||
| 2323 | DeclaratorChunk &getTypeObject(unsigned i) { | ||||
| 2324 | assert(i < DeclTypeInfo.size() && "Invalid type chunk")(static_cast <bool> (i < DeclTypeInfo.size() && "Invalid type chunk") ? void (0) : __assert_fail ("i < DeclTypeInfo.size() && \"Invalid type chunk\"" , "clang/include/clang/Sema/DeclSpec.h", 2324, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 2325 | return DeclTypeInfo[i]; | ||||
| 2326 | } | ||||
| 2327 | |||||
| 2328 | typedef SmallVectorImpl<DeclaratorChunk>::const_iterator type_object_iterator; | ||||
| 2329 | typedef llvm::iterator_range<type_object_iterator> type_object_range; | ||||
| 2330 | |||||
| 2331 | /// Returns the range of type objects, from the identifier outwards. | ||||
| 2332 | type_object_range type_objects() const { | ||||
| 2333 | return type_object_range(DeclTypeInfo.begin(), DeclTypeInfo.end()); | ||||
| 2334 | } | ||||
| 2335 | |||||
| 2336 | void DropFirstTypeObject() { | ||||
| 2337 | assert(!DeclTypeInfo.empty() && "No type chunks to drop.")(static_cast <bool> (!DeclTypeInfo.empty() && "No type chunks to drop." ) ? void (0) : __assert_fail ("!DeclTypeInfo.empty() && \"No type chunks to drop.\"" , "clang/include/clang/Sema/DeclSpec.h", 2337, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 2338 | DeclTypeInfo.front().destroy(); | ||||
| 2339 | DeclTypeInfo.erase(DeclTypeInfo.begin()); | ||||
| 2340 | } | ||||
| 2341 | |||||
| 2342 | /// Return the innermost (closest to the declarator) chunk of this | ||||
| 2343 | /// declarator that is not a parens chunk, or null if there are no | ||||
| 2344 | /// non-parens chunks. | ||||
| 2345 | const DeclaratorChunk *getInnermostNonParenChunk() const { | ||||
| 2346 | for (unsigned i = 0, i_end = DeclTypeInfo.size(); i < i_end; ++i) { | ||||
| 2347 | if (!DeclTypeInfo[i].isParen()) | ||||
| 2348 | return &DeclTypeInfo[i]; | ||||
| 2349 | } | ||||
| 2350 | return nullptr; | ||||
| 2351 | } | ||||
| 2352 | |||||
| 2353 | /// Return the outermost (furthest from the declarator) chunk of | ||||
| 2354 | /// this declarator that is not a parens chunk, or null if there are | ||||
| 2355 | /// no non-parens chunks. | ||||
| 2356 | const DeclaratorChunk *getOutermostNonParenChunk() const { | ||||
| 2357 | for (unsigned i = DeclTypeInfo.size(), i_end = 0; i != i_end; --i) { | ||||
| 2358 | if (!DeclTypeInfo[i-1].isParen()) | ||||
| 2359 | return &DeclTypeInfo[i-1]; | ||||
| 2360 | } | ||||
| 2361 | return nullptr; | ||||
| 2362 | } | ||||
| 2363 | |||||
| 2364 | /// isArrayOfUnknownBound - This method returns true if the declarator | ||||
| 2365 | /// is a declarator for an array of unknown bound (looking through | ||||
| 2366 | /// parentheses). | ||||
| 2367 | bool isArrayOfUnknownBound() const { | ||||
| 2368 | const DeclaratorChunk *chunk = getInnermostNonParenChunk(); | ||||
| 2369 | return (chunk && chunk->Kind == DeclaratorChunk::Array && | ||||
| 2370 | !chunk->Arr.NumElts); | ||||
| 2371 | } | ||||
| 2372 | |||||
| 2373 | /// isFunctionDeclarator - This method returns true if the declarator | ||||
| 2374 | /// is a function declarator (looking through parentheses). | ||||
| 2375 | /// If true is returned, then the reference type parameter idx is | ||||
| 2376 | /// assigned with the index of the declaration chunk. | ||||
| 2377 | bool isFunctionDeclarator(unsigned& idx) const { | ||||
| 2378 | for (unsigned i = 0, i_end = DeclTypeInfo.size(); i
| ||||
| 2379 | switch (DeclTypeInfo[i].Kind) { | ||||
| 2380 | case DeclaratorChunk::Function: | ||||
| 2381 | idx = i; | ||||
| 2382 | return true; | ||||
| 2383 | case DeclaratorChunk::Paren: | ||||
| 2384 | continue; | ||||
| 2385 | case DeclaratorChunk::Pointer: | ||||
| 2386 | case DeclaratorChunk::Reference: | ||||
| 2387 | case DeclaratorChunk::Array: | ||||
| 2388 | case DeclaratorChunk::BlockPointer: | ||||
| 2389 | case DeclaratorChunk::MemberPointer: | ||||
| 2390 | case DeclaratorChunk::Pipe: | ||||
| 2391 | return false; | ||||
| 2392 | } | ||||
| 2393 | llvm_unreachable("Invalid type chunk")::llvm::llvm_unreachable_internal("Invalid type chunk", "clang/include/clang/Sema/DeclSpec.h" , 2393); | ||||
| 2394 | } | ||||
| 2395 | return false; | ||||
| 2396 | } | ||||
| 2397 | |||||
| 2398 | /// isFunctionDeclarator - Once this declarator is fully parsed and formed, | ||||
| 2399 | /// this method returns true if the identifier is a function declarator | ||||
| 2400 | /// (looking through parentheses). | ||||
| 2401 | bool isFunctionDeclarator() const { | ||||
| 2402 | unsigned index; | ||||
| 2403 | return isFunctionDeclarator(index); | ||||
| 2404 | } | ||||
| 2405 | |||||
| 2406 | /// getFunctionTypeInfo - Retrieves the function type info object | ||||
| 2407 | /// (looking through parentheses). | ||||
| 2408 | DeclaratorChunk::FunctionTypeInfo &getFunctionTypeInfo() { | ||||
| 2409 | assert(isFunctionDeclarator() && "Not a function declarator!")(static_cast <bool> (isFunctionDeclarator() && "Not a function declarator!" ) ? void (0) : __assert_fail ("isFunctionDeclarator() && \"Not a function declarator!\"" , "clang/include/clang/Sema/DeclSpec.h", 2409, __extension__ __PRETTY_FUNCTION__ )); | ||||
| 2410 | unsigned index = 0; | ||||
| 2411 | isFunctionDeclarator(index); | ||||
| 2412 | return DeclTypeInfo[index].Fun; | ||||
| 2413 | } | ||||
| 2414 | |||||
| 2415 | /// getFunctionTypeInfo - Retrieves the function type info object | ||||
| 2416 | /// (looking through parentheses). | ||||
| 2417 | const DeclaratorChunk::FunctionTypeInfo &getFunctionTypeInfo() const { | ||||
| 2418 | return const_cast<Declarator*>(this)->getFunctionTypeInfo(); | ||||
| 2419 | } | ||||
| 2420 | |||||
| 2421 | /// Determine whether the declaration that will be produced from | ||||
| 2422 | /// this declaration will be a function. | ||||
| 2423 | /// | ||||
| 2424 | /// A declaration can declare a function even if the declarator itself | ||||
| 2425 | /// isn't a function declarator, if the type specifier refers to a function | ||||
| 2426 | /// type. This routine checks for both cases. | ||||
| 2427 | bool isDeclarationOfFunction() const; | ||||
| 2428 | |||||
| 2429 | /// Return true if this declaration appears in a context where a | ||||
| 2430 | /// function declarator would be a function declaration. | ||||
| 2431 | bool isFunctionDeclarationContext() const { | ||||
| 2432 | if (getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) | ||||
| 2433 | return false; | ||||
| 2434 | |||||
| 2435 | switch (Context) { | ||||
| 2436 | case DeclaratorContext::File: | ||||
| 2437 | case DeclaratorContext::Member: | ||||
| 2438 | case DeclaratorContext::Block: | ||||
| 2439 | case DeclaratorContext::ForInit: | ||||
| 2440 | case DeclaratorContext::SelectionInit: | ||||
| 2441 | return true; | ||||
| 2442 | |||||
| 2443 | case DeclaratorContext::Condition: | ||||
| 2444 | case DeclaratorContext::KNRTypeList: | ||||
| 2445 | case DeclaratorContext::TypeName: | ||||
| 2446 | case DeclaratorContext::FunctionalCast: | ||||
| 2447 | case DeclaratorContext::AliasDecl: | ||||
| 2448 | case DeclaratorContext::AliasTemplate: | ||||
| 2449 | case DeclaratorContext::Prototype: | ||||
| 2450 | case DeclaratorContext::LambdaExprParameter: | ||||
| 2451 | case DeclaratorContext::ObjCParameter: | ||||
| 2452 | case DeclaratorContext::ObjCResult: | ||||
| 2453 | case DeclaratorContext::TemplateParam: | ||||
| 2454 | case DeclaratorContext::CXXNew: | ||||
| 2455 | case DeclaratorContext::CXXCatch: | ||||
| 2456 | case DeclaratorContext::ObjCCatch: | ||||
| 2457 | case DeclaratorContext::BlockLiteral: | ||||
| 2458 | case DeclaratorContext::LambdaExpr: | ||||
| 2459 | case DeclaratorContext::ConversionId: | ||||
| 2460 | case DeclaratorContext::TemplateArg: | ||||
| 2461 | case DeclaratorContext::TemplateTypeArg: | ||||
| 2462 | case DeclaratorContext::TrailingReturn: | ||||
| 2463 | case DeclaratorContext::TrailingReturnVar: | ||||
| 2464 | case DeclaratorContext::RequiresExpr: | ||||
| 2465 | case DeclaratorContext::Association: | ||||
| 2466 | return false; | ||||
| 2467 | } | ||||
| 2468 | llvm_unreachable("unknown context kind!")::llvm::llvm_unreachable_internal("unknown context kind!", "clang/include/clang/Sema/DeclSpec.h" , 2468); | ||||
| 2469 | } | ||||
| 2470 | |||||
| 2471 | /// Determine whether this declaration appears in a context where an | ||||
| 2472 | /// expression could appear. | ||||
| 2473 | bool isExpressionContext() const { | ||||
| 2474 | switch (Context) { | ||||
| 2475 | case DeclaratorContext::File: | ||||
| 2476 | case DeclaratorContext::KNRTypeList: | ||||
| 2477 | case DeclaratorContext::Member: | ||||
| 2478 | |||||
| 2479 | // FIXME: sizeof(...) permits an expression. | ||||
| 2480 | case DeclaratorContext::TypeName: | ||||
| 2481 | |||||
| 2482 | case DeclaratorContext::FunctionalCast: | ||||
| 2483 | case DeclaratorContext::AliasDecl: | ||||
| 2484 | case DeclaratorContext::AliasTemplate: | ||||
| 2485 | case DeclaratorContext::Prototype: | ||||
| 2486 | case DeclaratorContext::LambdaExprParameter: | ||||
| 2487 | case DeclaratorContext::ObjCParameter: | ||||
| 2488 | case DeclaratorContext::ObjCResult: | ||||
| 2489 | case DeclaratorContext::TemplateParam: | ||||
| 2490 | case DeclaratorContext::CXXNew: | ||||
| 2491 | case DeclaratorContext::CXXCatch: | ||||
| 2492 | case DeclaratorContext::ObjCCatch: | ||||
| 2493 | case DeclaratorContext::BlockLiteral: | ||||
| 2494 | case DeclaratorContext::LambdaExpr: | ||||
| 2495 | case DeclaratorContext::ConversionId: | ||||
| 2496 | case DeclaratorContext::TrailingReturn: | ||||
| 2497 | case DeclaratorContext::TrailingReturnVar: | ||||
| 2498 | case DeclaratorContext::TemplateTypeArg: | ||||
| 2499 | case DeclaratorContext::RequiresExpr: | ||||
| 2500 | case DeclaratorContext::Association: | ||||
| 2501 | return false; | ||||
| 2502 | |||||
| 2503 | case DeclaratorContext::Block: | ||||
| 2504 | case DeclaratorContext::ForInit: | ||||
| 2505 | case DeclaratorContext::SelectionInit: | ||||
| 2506 | case DeclaratorContext::Condition: | ||||
| 2507 | case DeclaratorContext::TemplateArg: | ||||
| 2508 | return true; | ||||
| 2509 | } | ||||
| 2510 | |||||
| 2511 | llvm_unreachable("unknown context kind!")::llvm::llvm_unreachable_internal("unknown context kind!", "clang/include/clang/Sema/DeclSpec.h" , 2511); | ||||
| 2512 | } | ||||
| 2513 | |||||
| 2514 | /// Return true if a function declarator at this position would be a | ||||
| 2515 | /// function declaration. | ||||
| 2516 | bool isFunctionDeclaratorAFunctionDeclaration() const { | ||||
| 2517 | if (!isFunctionDeclarationContext()) | ||||
| 2518 | return false; | ||||
| 2519 | |||||
| 2520 | for (unsigned I = 0, N = getNumTypeObjects(); I != N; ++I) | ||||
| 2521 | if (getTypeObject(I).Kind != DeclaratorChunk::Paren) | ||||
| 2522 | return false; | ||||
| 2523 | |||||
| 2524 | return true; | ||||
| 2525 | } | ||||
| 2526 | |||||
| 2527 | /// Determine whether a trailing return type was written (at any | ||||
| 2528 | /// level) within this declarator. | ||||
| 2529 | bool hasTrailingReturnType() const { | ||||
| 2530 | for (const auto &Chunk : type_objects()) | ||||
| 2531 | if (Chunk.Kind == DeclaratorChunk::Function && | ||||
| 2532 | Chunk.Fun.hasTrailingReturnType()) | ||||
| 2533 | return true; | ||||
| 2534 | return false; | ||||
| 2535 | } | ||||
| 2536 | /// Get the trailing return type appearing (at any level) within this | ||||
| 2537 | /// declarator. | ||||
| 2538 | ParsedType getTrailingReturnType() const { | ||||
| 2539 | for (const auto &Chunk : type_objects()) | ||||
| 2540 | if (Chunk.Kind == DeclaratorChunk::Function && | ||||
| 2541 | Chunk.Fun.hasTrailingReturnType()) | ||||
| 2542 | return Chunk.Fun.getTrailingReturnType(); | ||||
| 2543 | return ParsedType(); | ||||
| 2544 | } | ||||
| 2545 | |||||
| 2546 | /// \brief Sets a trailing requires clause for this declarator. | ||||
| 2547 | void setTrailingRequiresClause(Expr *TRC) { | ||||
| 2548 | TrailingRequiresClause = TRC; | ||||
| 2549 | |||||
| 2550 | SetRangeEnd(TRC->getEndLoc()); | ||||
| 2551 | } | ||||
| 2552 | |||||
| 2553 | /// \brief Sets a trailing requires clause for this declarator. | ||||
| 2554 | Expr *getTrailingRequiresClause() { | ||||
| 2555 | return TrailingRequiresClause; | ||||
| 2556 | } | ||||
| 2557 | |||||
| 2558 | /// \brief Determine whether a trailing requires clause was written in this | ||||
| 2559 | /// declarator. | ||||
| 2560 | bool hasTrailingRequiresClause() const { | ||||
| 2561 | return TrailingRequiresClause != nullptr; | ||||
| 2562 | } | ||||
| 2563 | |||||
| 2564 | /// Sets the template parameter lists that preceded the declarator. | ||||
| 2565 | void setTemplateParameterLists(ArrayRef<TemplateParameterList *> TPLs) { | ||||
| 2566 | TemplateParameterLists = TPLs; | ||||
| 2567 | } | ||||
| 2568 | |||||
| 2569 | /// The template parameter lists that preceded the declarator. | ||||
| 2570 | ArrayRef<TemplateParameterList *> getTemplateParameterLists() const { | ||||
| 2571 | return TemplateParameterLists; | ||||
| 2572 | } | ||||
| 2573 | |||||
| 2574 | /// Sets the template parameter list generated from the explicit template | ||||
| 2575 | /// parameters along with any invented template parameters from | ||||
| 2576 | /// placeholder-typed parameters. | ||||
| 2577 | void setInventedTemplateParameterList(TemplateParameterList *Invented) { | ||||
| 2578 | InventedTemplateParameterList = Invented; | ||||
| 2579 | } | ||||
| 2580 | |||||
| 2581 | /// The template parameter list generated from the explicit template | ||||
| 2582 | /// parameters along with any invented template parameters from | ||||
| 2583 | /// placeholder-typed parameters, if there were any such parameters. | ||||
| 2584 | TemplateParameterList * getInventedTemplateParameterList() const { | ||||
| 2585 | return InventedTemplateParameterList; | ||||
| 2586 | } | ||||
| 2587 | |||||
| 2588 | /// takeAttributes - Takes attributes from the given parsed-attributes | ||||
| 2589 | /// set and add them to this declarator. | ||||
| 2590 | /// | ||||
| 2591 | /// These examples both add 3 attributes to "var": | ||||
| 2592 | /// short int var __attribute__((aligned(16),common,deprecated)); | ||||
| 2593 | /// short int x, __attribute__((aligned(16)) var | ||||
| 2594 | /// __attribute__((common,deprecated)); | ||||
| 2595 | /// | ||||
| 2596 | /// Also extends the range of the declarator. | ||||
| 2597 | void takeAttributes(ParsedAttributes &attrs) { | ||||
| 2598 | Attrs.takeAllFrom(attrs); | ||||
| 2599 | |||||
| 2600 | if (attrs.Range.getEnd().isValid()) | ||||
| 2601 | SetRangeEnd(attrs.Range.getEnd()); | ||||
| 2602 | } | ||||
| 2603 | |||||
| 2604 | const ParsedAttributes &getAttributes() const { return Attrs; } | ||||
| 2605 | ParsedAttributes &getAttributes() { return Attrs; } | ||||
| 2606 | |||||
| 2607 | const ParsedAttributesView &getDeclarationAttributes() const { | ||||
| 2608 | return DeclarationAttrs; | ||||
| 2609 | } | ||||
| 2610 | |||||
| 2611 | /// hasAttributes - do we contain any attributes? | ||||
| 2612 | bool hasAttributes() const { | ||||
| 2613 | if (!getAttributes().empty() || !getDeclarationAttributes().empty() || | ||||
| 2614 | getDeclSpec().hasAttributes()) | ||||
| 2615 | return true; | ||||
| 2616 | for (unsigned i = 0, e = getNumTypeObjects(); i != e; ++i) | ||||
| 2617 | if (!getTypeObject(i).getAttrs().empty()) | ||||
| 2618 | return true; | ||||
| 2619 | return false; | ||||
| 2620 | } | ||||
| 2621 | |||||
| 2622 | /// Return a source range list of C++11 attributes associated | ||||
| 2623 | /// with the declarator. | ||||
| 2624 | void getCXX11AttributeRanges(SmallVectorImpl<SourceRange> &Ranges) { | ||||
| 2625 | for (const ParsedAttr &AL : Attrs) | ||||
| 2626 | if (AL.isCXX11Attribute()) | ||||
| 2627 | Ranges.push_back(AL.getRange()); | ||||
| 2628 | } | ||||
| 2629 | |||||
| 2630 | void setAsmLabel(Expr *E) { AsmLabel = E; } | ||||
| 2631 | Expr *getAsmLabel() const { return AsmLabel; } | ||||
| 2632 | |||||
| 2633 | void setExtension(bool Val = true) { Extension = Val; } | ||||
| 2634 | bool getExtension() const { return Extension; } | ||||
| 2635 | |||||
| 2636 | void setObjCIvar(bool Val = true) { ObjCIvar = Val; } | ||||
| 2637 | bool isObjCIvar() const { return ObjCIvar; } | ||||
| 2638 | |||||
| 2639 | void setObjCWeakProperty(bool Val = true) { ObjCWeakProperty = Val; } | ||||
| 2640 | bool isObjCWeakProperty() const { return ObjCWeakProperty; } | ||||
| 2641 | |||||
| 2642 | void setInvalidType(bool Val = true) { InvalidType = Val; } | ||||
| 2643 | bool isInvalidType() const { | ||||
| 2644 | return InvalidType || DS.getTypeSpecType() == DeclSpec::TST_error; | ||||
| 2645 | } | ||||
| 2646 | |||||
| 2647 | void setGroupingParens(bool flag) { GroupingParens = flag; } | ||||
| 2648 | bool hasGroupingParens() const { return GroupingParens; } | ||||
| 2649 | |||||
| 2650 | bool isFirstDeclarator() const { return !CommaLoc.isValid(); } | ||||
| 2651 | SourceLocation getCommaLoc() const { return CommaLoc; } | ||||
| 2652 | void setCommaLoc(SourceLocation CL) { CommaLoc = CL; } | ||||
| 2653 | |||||
| 2654 | bool hasEllipsis() const { return EllipsisLoc.isValid(); } | ||||
| 2655 | SourceLocation getEllipsisLoc() const { return EllipsisLoc; } | ||||
| 2656 | void setEllipsisLoc(SourceLocation EL) { EllipsisLoc = EL; } | ||||
| 2657 | |||||
| 2658 | void setFunctionDefinitionKind(FunctionDefinitionKind Val) { | ||||
| 2659 | FunctionDefinition = static_cast<unsigned>(Val); | ||||
| 2660 | } | ||||
| 2661 | |||||
| 2662 | bool isFunctionDefinition() const { | ||||
| 2663 | return getFunctionDefinitionKind() != FunctionDefinitionKind::Declaration; | ||||
| 2664 | } | ||||
| 2665 | |||||
| 2666 | FunctionDefinitionKind getFunctionDefinitionKind() const { | ||||
| 2667 | return (FunctionDefinitionKind)FunctionDefinition; | ||||
| 2668 | } | ||||
| 2669 | |||||
| 2670 | void setHasInitializer(bool Val = true) { HasInitializer = Val; } | ||||
| 2671 | bool hasInitializer() const { return HasInitializer; } | ||||
| 2672 | |||||
| 2673 | /// Returns true if this declares a real member and not a friend. | ||||
| 2674 | bool isFirstDeclarationOfMember() { | ||||
| 2675 | return getContext() == DeclaratorContext::Member && | ||||
| 2676 | !getDeclSpec().isFriendSpecified(); | ||||
| 2677 | } | ||||
| 2678 | |||||
| 2679 | /// Returns true if this declares a static member. This cannot be called on a | ||||
| 2680 | /// declarator outside of a MemberContext because we won't know until | ||||
| 2681 | /// redeclaration time if the decl is static. | ||||
| 2682 | bool isStaticMember(); | ||||
| 2683 | |||||
| 2684 | /// Returns true if this declares a constructor or a destructor. | ||||
| 2685 | bool isCtorOrDtor(); | ||||
| 2686 | |||||
| 2687 | void setRedeclaration(bool Val) { Redeclaration = Val; } | ||||
| 2688 | bool isRedeclaration() const { return Redeclaration; } | ||||
| 2689 | }; | ||||
| 2690 | |||||
| 2691 | /// This little struct is used to capture information about | ||||
| 2692 | /// structure field declarators, which is basically just a bitfield size. | ||||
| 2693 | struct FieldDeclarator { | ||||
| 2694 | Declarator D; | ||||
| 2695 | Expr *BitfieldSize; | ||||
| 2696 | explicit FieldDeclarator(const DeclSpec &DS, | ||||
| 2697 | const ParsedAttributes &DeclarationAttrs) | ||||
| 2698 | : D(DS, DeclarationAttrs, DeclaratorContext::Member), | ||||
| 2699 | BitfieldSize(nullptr) {} | ||||
| 2700 | }; | ||||
| 2701 | |||||
| 2702 | /// Represents a C++11 virt-specifier-seq. | ||||
| 2703 | class VirtSpecifiers { | ||||
| 2704 | public: | ||||
| 2705 | enum Specifier { | ||||
| 2706 | VS_None = 0, | ||||
| 2707 | VS_Override = 1, | ||||
| 2708 | VS_Final = 2, | ||||
| 2709 | VS_Sealed = 4, | ||||
| 2710 | // Represents the __final keyword, which is legal for gcc in pre-C++11 mode. | ||||
| 2711 | VS_GNU_Final = 8, | ||||
| 2712 | VS_Abstract = 16 | ||||
| 2713 | }; | ||||
| 2714 | |||||
| 2715 | VirtSpecifiers() : Specifiers(0), LastSpecifier(VS_None) { } | ||||
| 2716 | |||||
| 2717 | bool SetSpecifier(Specifier VS, SourceLocation Loc, | ||||
| 2718 | const char *&PrevSpec); | ||||
| 2719 | |||||
| 2720 | bool isUnset() const { return Specifiers == 0; } | ||||
| 2721 | |||||
| 2722 | bool isOverrideSpecified() const { return Specifiers & VS_Override; } | ||||
| 2723 | SourceLocation getOverrideLoc() const { return VS_overrideLoc; } | ||||
| 2724 | |||||
| 2725 | bool isFinalSpecified() const { return Specifiers & (VS_Final | VS_Sealed | VS_GNU_Final); } | ||||
| 2726 | bool isFinalSpelledSealed() const { return Specifiers & VS_Sealed; } | ||||
| 2727 | SourceLocation getFinalLoc() const { return VS_finalLoc; } | ||||
| 2728 | SourceLocation getAbstractLoc() const { return VS_abstractLoc; } | ||||
| 2729 | |||||
| 2730 | void clear() { Specifiers = 0; } | ||||
| 2731 | |||||
| 2732 | static const char *getSpecifierName(Specifier VS); | ||||
| 2733 | |||||
| 2734 | SourceLocation getFirstLocation() const { return FirstLocation; } | ||||
| 2735 | SourceLocation getLastLocation() const { return LastLocation; } | ||||
| 2736 | Specifier getLastSpecifier() const { return LastSpecifier; } | ||||
| 2737 | |||||
| 2738 | private: | ||||
| 2739 | unsigned Specifiers; | ||||
| 2740 | Specifier LastSpecifier; | ||||
| 2741 | |||||
| 2742 | SourceLocation VS_overrideLoc, VS_finalLoc, VS_abstractLoc; | ||||
| 2743 | SourceLocation FirstLocation; | ||||
| 2744 | SourceLocation LastLocation; | ||||
| 2745 | }; | ||||
| 2746 | |||||
| 2747 | enum class LambdaCaptureInitKind { | ||||
| 2748 | NoInit, //!< [a] | ||||
| 2749 | CopyInit, //!< [a = b], [a = {b}] | ||||
| 2750 | DirectInit, //!< [a(b)] | ||||
| 2751 | ListInit //!< [a{b}] | ||||
| 2752 | }; | ||||
| 2753 | |||||
| 2754 | /// Represents a complete lambda introducer. | ||||
| 2755 | struct LambdaIntroducer { | ||||
| 2756 | /// An individual capture in a lambda introducer. | ||||
| 2757 | struct LambdaCapture { | ||||
| 2758 | LambdaCaptureKind Kind; | ||||
| 2759 | SourceLocation Loc; | ||||
| 2760 | IdentifierInfo *Id; | ||||
| 2761 | SourceLocation EllipsisLoc; | ||||
| 2762 | LambdaCaptureInitKind InitKind; | ||||
| 2763 | ExprResult Init; | ||||
| 2764 | ParsedType InitCaptureType; | ||||
| 2765 | SourceRange ExplicitRange; | ||||
| 2766 | |||||
| 2767 | LambdaCapture(LambdaCaptureKind Kind, SourceLocation Loc, | ||||
| 2768 | IdentifierInfo *Id, SourceLocation EllipsisLoc, | ||||
| 2769 | LambdaCaptureInitKind InitKind, ExprResult Init, | ||||
| 2770 | ParsedType InitCaptureType, | ||||
| 2771 | SourceRange ExplicitRange) | ||||
| 2772 | : Kind(Kind), Loc(Loc), Id(Id), EllipsisLoc(EllipsisLoc), | ||||
| 2773 | InitKind(InitKind), Init(Init), InitCaptureType(InitCaptureType), | ||||
| 2774 | ExplicitRange(ExplicitRange) {} | ||||
| 2775 | }; | ||||
| 2776 | |||||
| 2777 | SourceRange Range; | ||||
| 2778 | SourceLocation DefaultLoc; | ||||
| 2779 | LambdaCaptureDefault Default; | ||||
| 2780 | SmallVector<LambdaCapture, 4> Captures; | ||||
| 2781 | |||||
| 2782 | LambdaIntroducer() | ||||
| 2783 | : Default(LCD_None) {} | ||||
| 2784 | |||||
| 2785 | bool hasLambdaCapture() const { | ||||
| 2786 | return Captures.size() > 0 || Default != LCD_None; | ||||
| 2787 | } | ||||
| 2788 | |||||
| 2789 | /// Append a capture in a lambda introducer. | ||||
| 2790 | void addCapture(LambdaCaptureKind Kind, | ||||
| 2791 | SourceLocation Loc, | ||||
| 2792 | IdentifierInfo* Id, | ||||
| 2793 | SourceLocation EllipsisLoc, | ||||
| 2794 | LambdaCaptureInitKind InitKind, | ||||
| 2795 | ExprResult Init, | ||||
| 2796 | ParsedType InitCaptureType, | ||||
| 2797 | SourceRange ExplicitRange) { | ||||
| 2798 | Captures.push_back(LambdaCapture(Kind, Loc, Id, EllipsisLoc, InitKind, Init, | ||||
| 2799 | InitCaptureType, ExplicitRange)); | ||||
| 2800 | } | ||||
| 2801 | }; | ||||
| 2802 | |||||
| 2803 | struct InventedTemplateParameterInfo { | ||||
| 2804 | /// The number of parameters in the template parameter list that were | ||||
| 2805 | /// explicitly specified by the user, as opposed to being invented by use | ||||
| 2806 | /// of an auto parameter. | ||||
| 2807 | unsigned NumExplicitTemplateParams = 0; | ||||
| 2808 | |||||
| 2809 | /// If this is a generic lambda or abbreviated function template, use this | ||||
| 2810 | /// as the depth of each 'auto' parameter, during initial AST construction. | ||||
| 2811 | unsigned AutoTemplateParameterDepth = 0; | ||||
| 2812 | |||||
| 2813 | /// Store the list of the template parameters for a generic lambda or an | ||||
| 2814 | /// abbreviated function template. | ||||
| 2815 | /// If this is a generic lambda or abbreviated function template, this holds | ||||
| 2816 | /// the explicit template parameters followed by the auto parameters | ||||
| 2817 | /// converted into TemplateTypeParmDecls. | ||||
| 2818 | /// It can be used to construct the generic lambda or abbreviated template's | ||||
| 2819 | /// template parameter list during initial AST construction. | ||||
| 2820 | SmallVector<NamedDecl*, 4> TemplateParams; | ||||
| 2821 | }; | ||||
| 2822 | |||||
| 2823 | } // end namespace clang | ||||
| 2824 | |||||
| 2825 | #endif // LLVM_CLANG_SEMA_DECLSPEC_H |