| //===--- DeclSpec.cpp - Declaration Specifier Semantic Analysis -----------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements semantic analysis for declaration specifiers. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Sema/DeclSpec.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/Expr.h" |
| #include "clang/AST/LocInfoType.h" |
| #include "clang/AST/TypeLoc.h" |
| #include "clang/Basic/LangOptions.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "clang/Sema/ParsedTemplate.h" |
| #include "clang/Sema/Sema.h" |
| #include "clang/Sema/SemaDiagnostic.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/SmallString.h" |
| #include <cstring> |
| using namespace clang; |
| |
| |
| void UnqualifiedId::setTemplateId(TemplateIdAnnotation *TemplateId) { |
| assert(TemplateId && "NULL template-id annotation?"); |
| Kind = UnqualifiedIdKind::IK_TemplateId; |
| this->TemplateId = TemplateId; |
| StartLocation = TemplateId->TemplateNameLoc; |
| EndLocation = TemplateId->RAngleLoc; |
| } |
| |
| void UnqualifiedId::setConstructorTemplateId(TemplateIdAnnotation *TemplateId) { |
| assert(TemplateId && "NULL template-id annotation?"); |
| Kind = UnqualifiedIdKind::IK_ConstructorTemplateId; |
| this->TemplateId = TemplateId; |
| StartLocation = TemplateId->TemplateNameLoc; |
| EndLocation = TemplateId->RAngleLoc; |
| } |
| |
| void CXXScopeSpec::Extend(ASTContext &Context, SourceLocation TemplateKWLoc, |
| TypeLoc TL, SourceLocation ColonColonLoc) { |
| Builder.Extend(Context, TemplateKWLoc, TL, ColonColonLoc); |
| if (Range.getBegin().isInvalid()) |
| Range.setBegin(TL.getBeginLoc()); |
| Range.setEnd(ColonColonLoc); |
| |
| assert(Range == Builder.getSourceRange() && |
| "NestedNameSpecifierLoc range computation incorrect"); |
| } |
| |
| void CXXScopeSpec::Extend(ASTContext &Context, IdentifierInfo *Identifier, |
| SourceLocation IdentifierLoc, |
| SourceLocation ColonColonLoc) { |
| Builder.Extend(Context, Identifier, IdentifierLoc, ColonColonLoc); |
| |
| if (Range.getBegin().isInvalid()) |
| Range.setBegin(IdentifierLoc); |
| Range.setEnd(ColonColonLoc); |
| |
| assert(Range == Builder.getSourceRange() && |
| "NestedNameSpecifierLoc range computation incorrect"); |
| } |
| |
| void CXXScopeSpec::Extend(ASTContext &Context, NamespaceDecl *Namespace, |
| SourceLocation NamespaceLoc, |
| SourceLocation ColonColonLoc) { |
| Builder.Extend(Context, Namespace, NamespaceLoc, ColonColonLoc); |
| |
| if (Range.getBegin().isInvalid()) |
| Range.setBegin(NamespaceLoc); |
| Range.setEnd(ColonColonLoc); |
| |
| assert(Range == Builder.getSourceRange() && |
| "NestedNameSpecifierLoc range computation incorrect"); |
| } |
| |
| void CXXScopeSpec::Extend(ASTContext &Context, NamespaceAliasDecl *Alias, |
| SourceLocation AliasLoc, |
| SourceLocation ColonColonLoc) { |
| Builder.Extend(Context, Alias, AliasLoc, ColonColonLoc); |
| |
| if (Range.getBegin().isInvalid()) |
| Range.setBegin(AliasLoc); |
| Range.setEnd(ColonColonLoc); |
| |
| assert(Range == Builder.getSourceRange() && |
| "NestedNameSpecifierLoc range computation incorrect"); |
| } |
| |
| void CXXScopeSpec::MakeGlobal(ASTContext &Context, |
| SourceLocation ColonColonLoc) { |
| Builder.MakeGlobal(Context, ColonColonLoc); |
| |
| Range = SourceRange(ColonColonLoc); |
| |
| assert(Range == Builder.getSourceRange() && |
| "NestedNameSpecifierLoc range computation incorrect"); |
| } |
| |
| void CXXScopeSpec::MakeSuper(ASTContext &Context, CXXRecordDecl *RD, |
| SourceLocation SuperLoc, |
| SourceLocation ColonColonLoc) { |
| Builder.MakeSuper(Context, RD, SuperLoc, ColonColonLoc); |
| |
| Range.setBegin(SuperLoc); |
| Range.setEnd(ColonColonLoc); |
| |
| assert(Range == Builder.getSourceRange() && |
| "NestedNameSpecifierLoc range computation incorrect"); |
| } |
| |
| void CXXScopeSpec::MakeTrivial(ASTContext &Context, |
| NestedNameSpecifier *Qualifier, SourceRange R) { |
| Builder.MakeTrivial(Context, Qualifier, R); |
| Range = R; |
| } |
| |
| void CXXScopeSpec::Adopt(NestedNameSpecifierLoc Other) { |
| if (!Other) { |
| Range = SourceRange(); |
| Builder.Clear(); |
| return; |
| } |
| |
| Range = Other.getSourceRange(); |
| Builder.Adopt(Other); |
| } |
| |
| SourceLocation CXXScopeSpec::getLastQualifierNameLoc() const { |
| if (!Builder.getRepresentation()) |
| return SourceLocation(); |
| return Builder.getTemporary().getLocalBeginLoc(); |
| } |
| |
| NestedNameSpecifierLoc |
| CXXScopeSpec::getWithLocInContext(ASTContext &Context) const { |
| if (!Builder.getRepresentation()) |
| return NestedNameSpecifierLoc(); |
| |
| return Builder.getWithLocInContext(Context); |
| } |
| |
| /// DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function. |
| /// "TheDeclarator" is the declarator that this will be added to. |
| DeclaratorChunk DeclaratorChunk::getFunction(bool hasProto, |
| bool isAmbiguous, |
| SourceLocation LParenLoc, |
| ParamInfo *Params, |
| unsigned NumParams, |
| SourceLocation EllipsisLoc, |
| SourceLocation RParenLoc, |
| bool RefQualifierIsLvalueRef, |
| SourceLocation RefQualifierLoc, |
| SourceLocation MutableLoc, |
| ExceptionSpecificationType |
| ESpecType, |
| SourceRange ESpecRange, |
| ParsedType *Exceptions, |
| SourceRange *ExceptionRanges, |
| unsigned NumExceptions, |
| Expr *NoexceptExpr, |
| CachedTokens *ExceptionSpecTokens, |
| ArrayRef<NamedDecl*> |
| DeclsInPrototype, |
| SourceLocation LocalRangeBegin, |
| SourceLocation LocalRangeEnd, |
| Declarator &TheDeclarator, |
| TypeResult TrailingReturnType, |
| DeclSpec *MethodQualifiers) { |
| assert(!(MethodQualifiers && MethodQualifiers->getTypeQualifiers() & DeclSpec::TQ_atomic) && |
| "function cannot have _Atomic qualifier"); |
| |
| DeclaratorChunk I; |
| I.Kind = Function; |
| I.Loc = LocalRangeBegin; |
| I.EndLoc = LocalRangeEnd; |
| I.Fun.hasPrototype = hasProto; |
| I.Fun.isVariadic = EllipsisLoc.isValid(); |
| I.Fun.isAmbiguous = isAmbiguous; |
| I.Fun.LParenLoc = LParenLoc.getRawEncoding(); |
| I.Fun.EllipsisLoc = EllipsisLoc.getRawEncoding(); |
| I.Fun.RParenLoc = RParenLoc.getRawEncoding(); |
| I.Fun.DeleteParams = false; |
| I.Fun.NumParams = NumParams; |
| I.Fun.Params = nullptr; |
| I.Fun.RefQualifierIsLValueRef = RefQualifierIsLvalueRef; |
| I.Fun.RefQualifierLoc = RefQualifierLoc.getRawEncoding(); |
| I.Fun.MutableLoc = MutableLoc.getRawEncoding(); |
| I.Fun.ExceptionSpecType = ESpecType; |
| I.Fun.ExceptionSpecLocBeg = ESpecRange.getBegin().getRawEncoding(); |
| I.Fun.ExceptionSpecLocEnd = ESpecRange.getEnd().getRawEncoding(); |
| I.Fun.NumExceptionsOrDecls = 0; |
| I.Fun.Exceptions = nullptr; |
| I.Fun.NoexceptExpr = nullptr; |
| I.Fun.HasTrailingReturnType = TrailingReturnType.isUsable() || |
| TrailingReturnType.isInvalid(); |
| I.Fun.TrailingReturnType = TrailingReturnType.get(); |
| I.Fun.MethodQualifiers = nullptr; |
| I.Fun.QualAttrFactory = nullptr; |
| |
| if (MethodQualifiers && (MethodQualifiers->getTypeQualifiers() || |
| MethodQualifiers->getAttributes().size())) { |
| auto &attrs = MethodQualifiers->getAttributes(); |
| I.Fun.MethodQualifiers = new DeclSpec(attrs.getPool().getFactory()); |
| MethodQualifiers->forEachCVRUQualifier( |
| [&](DeclSpec::TQ TypeQual, StringRef PrintName, SourceLocation SL) { |
| I.Fun.MethodQualifiers->SetTypeQual(TypeQual, SL); |
| }); |
| I.Fun.MethodQualifiers->getAttributes().takeAllFrom(attrs); |
| I.Fun.MethodQualifiers->getAttributePool().takeAllFrom(attrs.getPool()); |
| } |
| |
| assert(I.Fun.ExceptionSpecType == ESpecType && "bitfield overflow"); |
| |
| // new[] a parameter array if needed. |
| if (NumParams) { |
| // If the 'InlineParams' in Declarator is unused and big enough, put our |
| // parameter list there (in an effort to avoid new/delete traffic). If it |
| // is already used (consider a function returning a function pointer) or too |
| // small (function with too many parameters), go to the heap. |
| if (!TheDeclarator.InlineStorageUsed && |
| NumParams <= llvm::array_lengthof(TheDeclarator.InlineParams)) { |
| I.Fun.Params = TheDeclarator.InlineParams; |
| new (I.Fun.Params) ParamInfo[NumParams]; |
| I.Fun.DeleteParams = false; |
| TheDeclarator.InlineStorageUsed = true; |
| } else { |
| I.Fun.Params = new DeclaratorChunk::ParamInfo[NumParams]; |
| I.Fun.DeleteParams = true; |
| } |
| for (unsigned i = 0; i < NumParams; i++) |
| I.Fun.Params[i] = std::move(Params[i]); |
| } |
| |
| // Check what exception specification information we should actually store. |
| switch (ESpecType) { |
| default: break; // By default, save nothing. |
| case EST_Dynamic: |
| // new[] an exception array if needed |
| if (NumExceptions) { |
| I.Fun.NumExceptionsOrDecls = NumExceptions; |
| I.Fun.Exceptions = new DeclaratorChunk::TypeAndRange[NumExceptions]; |
| for (unsigned i = 0; i != NumExceptions; ++i) { |
| I.Fun.Exceptions[i].Ty = Exceptions[i]; |
| I.Fun.Exceptions[i].Range = ExceptionRanges[i]; |
| } |
| } |
| break; |
| |
| case EST_DependentNoexcept: |
| case EST_NoexceptFalse: |
| case EST_NoexceptTrue: |
| I.Fun.NoexceptExpr = NoexceptExpr; |
| break; |
| |
| case EST_Unparsed: |
| I.Fun.ExceptionSpecTokens = ExceptionSpecTokens; |
| break; |
| } |
| |
| if (!DeclsInPrototype.empty()) { |
| assert(ESpecType == EST_None && NumExceptions == 0 && |
| "cannot have exception specifiers and decls in prototype"); |
| I.Fun.NumExceptionsOrDecls = DeclsInPrototype.size(); |
| // Copy the array of decls into stable heap storage. |
| I.Fun.DeclsInPrototype = new NamedDecl *[DeclsInPrototype.size()]; |
| for (size_t J = 0; J < DeclsInPrototype.size(); ++J) |
| I.Fun.DeclsInPrototype[J] = DeclsInPrototype[J]; |
| } |
| |
| return I; |
| } |
| |
| void Declarator::setDecompositionBindings( |
| SourceLocation LSquareLoc, |
| ArrayRef<DecompositionDeclarator::Binding> Bindings, |
| SourceLocation RSquareLoc) { |
| assert(!hasName() && "declarator given multiple names!"); |
| |
| BindingGroup.LSquareLoc = LSquareLoc; |
| BindingGroup.RSquareLoc = RSquareLoc; |
| BindingGroup.NumBindings = Bindings.size(); |
| Range.setEnd(RSquareLoc); |
| |
| // We're now past the identifier. |
| SetIdentifier(nullptr, LSquareLoc); |
| Name.EndLocation = RSquareLoc; |
| |
| // Allocate storage for bindings and stash them away. |
| if (Bindings.size()) { |
| if (!InlineStorageUsed && |
| Bindings.size() <= llvm::array_lengthof(InlineBindings)) { |
| BindingGroup.Bindings = InlineBindings; |
| BindingGroup.DeleteBindings = false; |
| InlineStorageUsed = true; |
| } else { |
| BindingGroup.Bindings = |
| new DecompositionDeclarator::Binding[Bindings.size()]; |
| BindingGroup.DeleteBindings = true; |
| } |
| std::uninitialized_copy(Bindings.begin(), Bindings.end(), |
| BindingGroup.Bindings); |
| } |
| } |
| |
| bool Declarator::isDeclarationOfFunction() const { |
| for (unsigned i = 0, i_end = DeclTypeInfo.size(); i < i_end; ++i) { |
| switch (DeclTypeInfo[i].Kind) { |
| case DeclaratorChunk::Function: |
| return true; |
| case DeclaratorChunk::Paren: |
| continue; |
| case DeclaratorChunk::Pointer: |
| case DeclaratorChunk::Reference: |
| case DeclaratorChunk::Array: |
| case DeclaratorChunk::BlockPointer: |
| case DeclaratorChunk::MemberPointer: |
| case DeclaratorChunk::Pipe: |
| return false; |
| } |
| llvm_unreachable("Invalid type chunk"); |
| } |
| |
| switch (DS.getTypeSpecType()) { |
| case TST_atomic: |
| case TST_auto: |
| case TST_auto_type: |
| case TST_bool: |
| case TST_char: |
| case TST_char8: |
| case TST_char16: |
| case TST_char32: |
| case TST_class: |
| case TST_decimal128: |
| case TST_decimal32: |
| case TST_decimal64: |
| case TST_double: |
| case TST_Accum: |
| case TST_Fract: |
| case TST_Float16: |
| case TST_float128: |
| case TST_enum: |
| case TST_error: |
| case TST_float: |
| case TST_half: |
| case TST_int: |
| case TST_int128: |
| case TST_struct: |
| case TST_interface: |
| case TST_union: |
| case TST_unknown_anytype: |
| case TST_unspecified: |
| case TST_void: |
| case TST_wchar: |
| #define GENERIC_IMAGE_TYPE(ImgType, Id) case TST_##ImgType##_t: |
| #include "clang/Basic/OpenCLImageTypes.def" |
| return false; |
| |
| case TST_decltype_auto: |
| // This must have an initializer, so can't be a function declaration, |
| // even if the initializer has function type. |
| return false; |
| |
| case TST_decltype: |
| case TST_typeofExpr: |
| if (Expr *E = DS.getRepAsExpr()) |
| return E->getType()->isFunctionType(); |
| return false; |
| |
| case TST_underlyingType: |
| case TST_typename: |
| case TST_typeofType: { |
| QualType QT = DS.getRepAsType().get(); |
| if (QT.isNull()) |
| return false; |
| |
| if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT)) |
| QT = LIT->getType(); |
| |
| if (QT.isNull()) |
| return false; |
| |
| return QT->isFunctionType(); |
| } |
| } |
| |
| llvm_unreachable("Invalid TypeSpecType!"); |
| } |
| |
| bool Declarator::isStaticMember() { |
| assert(getContext() == DeclaratorContext::MemberContext); |
| return getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static || |
| (getName().Kind == UnqualifiedIdKind::IK_OperatorFunctionId && |
| CXXMethodDecl::isStaticOverloadedOperator( |
| getName().OperatorFunctionId.Operator)); |
| } |
| |
| bool Declarator::isCtorOrDtor() { |
| return (getName().getKind() == UnqualifiedIdKind::IK_ConstructorName) || |
| (getName().getKind() == UnqualifiedIdKind::IK_DestructorName); |
| } |
| |
| void DeclSpec::forEachCVRUQualifier( |
| llvm::function_ref<void(TQ, StringRef, SourceLocation)> Handle) { |
| if (TypeQualifiers & TQ_const) |
| Handle(TQ_const, "const", TQ_constLoc); |
| if (TypeQualifiers & TQ_volatile) |
| Handle(TQ_volatile, "volatile", TQ_volatileLoc); |
| if (TypeQualifiers & TQ_restrict) |
| Handle(TQ_restrict, "restrict", TQ_restrictLoc); |
| if (TypeQualifiers & TQ_unaligned) |
| Handle(TQ_unaligned, "unaligned", TQ_unalignedLoc); |
| } |
| |
| void DeclSpec::forEachQualifier( |
| llvm::function_ref<void(TQ, StringRef, SourceLocation)> Handle) { |
| forEachCVRUQualifier(Handle); |
| // FIXME: Add code below to iterate through the attributes and call Handle. |
| } |
| |
| bool DeclSpec::hasTagDefinition() const { |
| if (!TypeSpecOwned) |
| return false; |
| return cast<TagDecl>(getRepAsDecl())->isCompleteDefinition(); |
| } |
| |
| /// getParsedSpecifiers - Return a bitmask of which flavors of specifiers this |
| /// declaration specifier includes. |
| /// |
| unsigned DeclSpec::getParsedSpecifiers() const { |
| unsigned Res = 0; |
| if (StorageClassSpec != SCS_unspecified || |
| ThreadStorageClassSpec != TSCS_unspecified) |
| Res |= PQ_StorageClassSpecifier; |
| |
| if (TypeQualifiers != TQ_unspecified) |
| Res |= PQ_TypeQualifier; |
| |
| if (hasTypeSpecifier()) |
| Res |= PQ_TypeSpecifier; |
| |
| if (FS_inline_specified || FS_virtual_specified || FS_explicit_specified || |
| FS_noreturn_specified || FS_forceinline_specified) |
| Res |= PQ_FunctionSpecifier; |
| return Res; |
| } |
| |
| template <class T> static bool BadSpecifier(T TNew, T TPrev, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| bool IsExtension = true) { |
| PrevSpec = DeclSpec::getSpecifierName(TPrev); |
| if (TNew != TPrev) |
| DiagID = diag::err_invalid_decl_spec_combination; |
| else |
| DiagID = IsExtension ? diag::ext_warn_duplicate_declspec : |
| diag::warn_duplicate_declspec; |
| return true; |
| } |
| |
| const char *DeclSpec::getSpecifierName(DeclSpec::SCS S) { |
| switch (S) { |
| case DeclSpec::SCS_unspecified: return "unspecified"; |
| case DeclSpec::SCS_typedef: return "typedef"; |
| case DeclSpec::SCS_extern: return "extern"; |
| case DeclSpec::SCS_static: return "static"; |
| case DeclSpec::SCS_auto: return "auto"; |
| case DeclSpec::SCS_register: return "register"; |
| case DeclSpec::SCS_private_extern: return "__private_extern__"; |
| case DeclSpec::SCS_mutable: return "mutable"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| const char *DeclSpec::getSpecifierName(DeclSpec::TSCS S) { |
| switch (S) { |
| case DeclSpec::TSCS_unspecified: return "unspecified"; |
| case DeclSpec::TSCS___thread: return "__thread"; |
| case DeclSpec::TSCS_thread_local: return "thread_local"; |
| case DeclSpec::TSCS__Thread_local: return "_Thread_local"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| const char *DeclSpec::getSpecifierName(TSW W) { |
| switch (W) { |
| case TSW_unspecified: return "unspecified"; |
| case TSW_short: return "short"; |
| case TSW_long: return "long"; |
| case TSW_longlong: return "long long"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| const char *DeclSpec::getSpecifierName(TSC C) { |
| switch (C) { |
| case TSC_unspecified: return "unspecified"; |
| case TSC_imaginary: return "imaginary"; |
| case TSC_complex: return "complex"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| |
| const char *DeclSpec::getSpecifierName(TSS S) { |
| switch (S) { |
| case TSS_unspecified: return "unspecified"; |
| case TSS_signed: return "signed"; |
| case TSS_unsigned: return "unsigned"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| const char *DeclSpec::getSpecifierName(DeclSpec::TST T, |
| const PrintingPolicy &Policy) { |
| switch (T) { |
| case DeclSpec::TST_unspecified: return "unspecified"; |
| case DeclSpec::TST_void: return "void"; |
| case DeclSpec::TST_char: return "char"; |
| case DeclSpec::TST_wchar: return Policy.MSWChar ? "__wchar_t" : "wchar_t"; |
| case DeclSpec::TST_char8: return "char8_t"; |
| case DeclSpec::TST_char16: return "char16_t"; |
| case DeclSpec::TST_char32: return "char32_t"; |
| case DeclSpec::TST_int: return "int"; |
| case DeclSpec::TST_int128: return "__int128"; |
| case DeclSpec::TST_half: return "half"; |
| case DeclSpec::TST_float: return "float"; |
| case DeclSpec::TST_double: return "double"; |
| case DeclSpec::TST_accum: return "_Accum"; |
| case DeclSpec::TST_fract: return "_Fract"; |
| case DeclSpec::TST_float16: return "_Float16"; |
| case DeclSpec::TST_float128: return "__float128"; |
| case DeclSpec::TST_bool: return Policy.Bool ? "bool" : "_Bool"; |
| case DeclSpec::TST_decimal32: return "_Decimal32"; |
| case DeclSpec::TST_decimal64: return "_Decimal64"; |
| case DeclSpec::TST_decimal128: return "_Decimal128"; |
| case DeclSpec::TST_enum: return "enum"; |
| case DeclSpec::TST_class: return "class"; |
| case DeclSpec::TST_union: return "union"; |
| case DeclSpec::TST_struct: return "struct"; |
| case DeclSpec::TST_interface: return "__interface"; |
| case DeclSpec::TST_typename: return "type-name"; |
| case DeclSpec::TST_typeofType: |
| case DeclSpec::TST_typeofExpr: return "typeof"; |
| case DeclSpec::TST_auto: return "auto"; |
| case DeclSpec::TST_auto_type: return "__auto_type"; |
| case DeclSpec::TST_decltype: return "(decltype)"; |
| case DeclSpec::TST_decltype_auto: return "decltype(auto)"; |
| case DeclSpec::TST_underlyingType: return "__underlying_type"; |
| case DeclSpec::TST_unknown_anytype: return "__unknown_anytype"; |
| case DeclSpec::TST_atomic: return "_Atomic"; |
| #define GENERIC_IMAGE_TYPE(ImgType, Id) \ |
| case DeclSpec::TST_##ImgType##_t: \ |
| return #ImgType "_t"; |
| #include "clang/Basic/OpenCLImageTypes.def" |
| case DeclSpec::TST_error: return "(error)"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| const char *DeclSpec::getSpecifierName(TQ T) { |
| switch (T) { |
| case DeclSpec::TQ_unspecified: return "unspecified"; |
| case DeclSpec::TQ_const: return "const"; |
| case DeclSpec::TQ_restrict: return "restrict"; |
| case DeclSpec::TQ_volatile: return "volatile"; |
| case DeclSpec::TQ_atomic: return "_Atomic"; |
| case DeclSpec::TQ_unaligned: return "__unaligned"; |
| } |
| llvm_unreachable("Unknown typespec!"); |
| } |
| |
| bool DeclSpec::SetStorageClassSpec(Sema &S, SCS SC, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| // OpenCL v1.1 s6.8g: "The extern, static, auto and register storage-class |
| // specifiers are not supported. |
| // It seems sensible to prohibit private_extern too |
| // The cl_clang_storage_class_specifiers extension enables support for |
| // these storage-class specifiers. |
| // OpenCL v1.2 s6.8 changes this to "The auto and register storage-class |
| // specifiers are not supported." |
| // OpenCL C++ v1.0 s2.9 restricts register. |
| if (S.getLangOpts().OpenCL && |
| !S.getOpenCLOptions().isEnabled("cl_clang_storage_class_specifiers")) { |
| switch (SC) { |
| case SCS_extern: |
| case SCS_private_extern: |
| case SCS_static: |
| if (S.getLangOpts().OpenCLVersion < 120 && |
| !S.getLangOpts().OpenCLCPlusPlus) { |
| DiagID = diag::err_opencl_unknown_type_specifier; |
| PrevSpec = getSpecifierName(SC); |
| return true; |
| } |
| break; |
| case SCS_auto: |
| case SCS_register: |
| DiagID = diag::err_opencl_unknown_type_specifier; |
| PrevSpec = getSpecifierName(SC); |
| return true; |
| default: |
| break; |
| } |
| } |
| |
| if (StorageClassSpec != SCS_unspecified) { |
| // Maybe this is an attempt to use C++11 'auto' outside of C++11 mode. |
| bool isInvalid = true; |
| if (TypeSpecType == TST_unspecified && S.getLangOpts().CPlusPlus) { |
| if (SC == SCS_auto) |
| return SetTypeSpecType(TST_auto, Loc, PrevSpec, DiagID, Policy); |
| if (StorageClassSpec == SCS_auto) { |
| isInvalid = SetTypeSpecType(TST_auto, StorageClassSpecLoc, |
| PrevSpec, DiagID, Policy); |
| assert(!isInvalid && "auto SCS -> TST recovery failed"); |
| } |
| } |
| |
| // Changing storage class is allowed only if the previous one |
| // was the 'extern' that is part of a linkage specification and |
| // the new storage class is 'typedef'. |
| if (isInvalid && |
| !(SCS_extern_in_linkage_spec && |
| StorageClassSpec == SCS_extern && |
| SC == SCS_typedef)) |
| return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID); |
| } |
| StorageClassSpec = SC; |
| StorageClassSpecLoc = Loc; |
| assert((unsigned)SC == StorageClassSpec && "SCS constants overflow bitfield"); |
| return false; |
| } |
| |
| bool DeclSpec::SetStorageClassSpecThread(TSCS TSC, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID) { |
| if (ThreadStorageClassSpec != TSCS_unspecified) |
| return BadSpecifier(TSC, (TSCS)ThreadStorageClassSpec, PrevSpec, DiagID); |
| |
| ThreadStorageClassSpec = TSC; |
| ThreadStorageClassSpecLoc = Loc; |
| return false; |
| } |
| |
| /// These methods set the specified attribute of the DeclSpec, but return true |
| /// and ignore the request if invalid (e.g. "extern" then "auto" is |
| /// specified). |
| bool DeclSpec::SetTypeSpecWidth(TSW W, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| // Overwrite TSWRange.Begin only if TypeSpecWidth was unspecified, so that |
| // for 'long long' we will keep the source location of the first 'long'. |
| if (TypeSpecWidth == TSW_unspecified) |
| TSWRange.setBegin(Loc); |
| // Allow turning long -> long long. |
| else if (W != TSW_longlong || TypeSpecWidth != TSW_long) |
| return BadSpecifier(W, (TSW)TypeSpecWidth, PrevSpec, DiagID); |
| TypeSpecWidth = W; |
| // Remember location of the last 'long' |
| TSWRange.setEnd(Loc); |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecComplex(TSC C, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID) { |
| if (TypeSpecComplex != TSC_unspecified) |
| return BadSpecifier(C, (TSC)TypeSpecComplex, PrevSpec, DiagID); |
| TypeSpecComplex = C; |
| TSCLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecSign(TSS S, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID) { |
| if (TypeSpecSign != TSS_unspecified) |
| return BadSpecifier(S, (TSS)TypeSpecSign, PrevSpec, DiagID); |
| TypeSpecSign = S; |
| TSSLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| ParsedType Rep, |
| const PrintingPolicy &Policy) { |
| return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep, Policy); |
| } |
| |
| bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc, |
| SourceLocation TagNameLoc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| ParsedType Rep, |
| const PrintingPolicy &Policy) { |
| assert(isTypeRep(T) && "T does not store a type"); |
| assert(Rep && "no type provided!"); |
| if (TypeSpecType != TST_unspecified) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_decl_spec_combination; |
| return true; |
| } |
| TypeSpecType = T; |
| TypeRep = Rep; |
| TSTLoc = TagKwLoc; |
| TSTNameLoc = TagNameLoc; |
| TypeSpecOwned = false; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| Expr *Rep, |
| const PrintingPolicy &Policy) { |
| assert(isExprRep(T) && "T does not store an expr"); |
| assert(Rep && "no expression provided!"); |
| if (TypeSpecType != TST_unspecified) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_decl_spec_combination; |
| return true; |
| } |
| TypeSpecType = T; |
| ExprRep = Rep; |
| TSTLoc = Loc; |
| TSTNameLoc = Loc; |
| TypeSpecOwned = false; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| Decl *Rep, bool Owned, |
| const PrintingPolicy &Policy) { |
| return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep, Owned, Policy); |
| } |
| |
| bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc, |
| SourceLocation TagNameLoc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| Decl *Rep, bool Owned, |
| const PrintingPolicy &Policy) { |
| assert(isDeclRep(T) && "T does not store a decl"); |
| // Unlike the other cases, we don't assert that we actually get a decl. |
| |
| if (TypeSpecType != TST_unspecified) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_decl_spec_combination; |
| return true; |
| } |
| TypeSpecType = T; |
| DeclRep = Rep; |
| TSTLoc = TagKwLoc; |
| TSTNameLoc = TagNameLoc; |
| TypeSpecOwned = Owned && Rep != nullptr; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| assert(!isDeclRep(T) && !isTypeRep(T) && !isExprRep(T) && |
| "rep required for these type-spec kinds!"); |
| if (TypeSpecType != TST_unspecified) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_decl_spec_combination; |
| return true; |
| } |
| TSTLoc = Loc; |
| TSTNameLoc = Loc; |
| if (TypeAltiVecVector && (T == TST_bool) && !TypeAltiVecBool) { |
| TypeAltiVecBool = true; |
| return false; |
| } |
| TypeSpecType = T; |
| TypeSpecOwned = false; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecSat(SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID) { |
| // Cannot set twice |
| if (TypeSpecSat) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "_Sat"; |
| return true; |
| } |
| TypeSpecSat = true; |
| TSSatLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeAltiVecVector(bool isAltiVecVector, SourceLocation Loc, |
| const char *&PrevSpec, unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| if (TypeSpecType != TST_unspecified) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_vector_decl_spec_combination; |
| return true; |
| } |
| TypeAltiVecVector = isAltiVecVector; |
| AltiVecLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypePipe(bool isPipe, SourceLocation Loc, |
| const char *&PrevSpec, unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| |
| if (TypeSpecType != TST_unspecified) { |
| PrevSpec = DeclSpec::getSpecifierName((TST)TypeSpecType, Policy); |
| DiagID = diag::err_invalid_decl_spec_combination; |
| return true; |
| } |
| |
| if (isPipe) { |
| TypeSpecPipe = TSP_pipe; |
| } |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc, |
| const char *&PrevSpec, unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| if (!TypeAltiVecVector || TypeAltiVecPixel || |
| (TypeSpecType != TST_unspecified)) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_pixel_decl_spec_combination; |
| return true; |
| } |
| TypeAltiVecPixel = isAltiVecPixel; |
| TSTLoc = Loc; |
| TSTNameLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeAltiVecBool(bool isAltiVecBool, SourceLocation Loc, |
| const char *&PrevSpec, unsigned &DiagID, |
| const PrintingPolicy &Policy) { |
| if (!TypeAltiVecVector || TypeAltiVecBool || |
| (TypeSpecType != TST_unspecified)) { |
| PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType, Policy); |
| DiagID = diag::err_invalid_vector_bool_decl_spec; |
| return true; |
| } |
| TypeAltiVecBool = isAltiVecBool; |
| TSTLoc = Loc; |
| TSTNameLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeSpecError() { |
| TypeSpecType = TST_error; |
| TypeSpecOwned = false; |
| TSTLoc = SourceLocation(); |
| TSTNameLoc = SourceLocation(); |
| return false; |
| } |
| |
| bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID, const LangOptions &Lang) { |
| // Duplicates are permitted in C99 onwards, but are not permitted in C89 or |
| // C++. However, since this is likely not what the user intended, we will |
| // always warn. We do not need to set the qualifier's location since we |
| // already have it. |
| if (TypeQualifiers & T) { |
| bool IsExtension = true; |
| if (Lang.C99) |
| IsExtension = false; |
| return BadSpecifier(T, T, PrevSpec, DiagID, IsExtension); |
| } |
| |
| return SetTypeQual(T, Loc); |
| } |
| |
| bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc) { |
| TypeQualifiers |= T; |
| |
| switch (T) { |
| case TQ_unspecified: break; |
| case TQ_const: TQ_constLoc = Loc; return false; |
| case TQ_restrict: TQ_restrictLoc = Loc; return false; |
| case TQ_volatile: TQ_volatileLoc = Loc; return false; |
| case TQ_unaligned: TQ_unalignedLoc = Loc; return false; |
| case TQ_atomic: TQ_atomicLoc = Loc; return false; |
| } |
| |
| llvm_unreachable("Unknown type qualifier!"); |
| } |
| |
| bool DeclSpec::setFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID) { |
| // 'inline inline' is ok. However, since this is likely not what the user |
| // intended, we will always warn, similar to duplicates of type qualifiers. |
| if (FS_inline_specified) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "inline"; |
| return true; |
| } |
| FS_inline_specified = true; |
| FS_inlineLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::setFunctionSpecForceInline(SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID) { |
| if (FS_forceinline_specified) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "__forceinline"; |
| return true; |
| } |
| FS_forceinline_specified = true; |
| FS_forceinlineLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::setFunctionSpecVirtual(SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID) { |
| // 'virtual virtual' is ok, but warn as this is likely not what the user |
| // intended. |
| if (FS_virtual_specified) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "virtual"; |
| return true; |
| } |
| FS_virtual_specified = true; |
| FS_virtualLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::setFunctionSpecExplicit(SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID) { |
| // 'explicit explicit' is ok, but warn as this is likely not what the user |
| // intended. |
| if (FS_explicit_specified) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "explicit"; |
| return true; |
| } |
| FS_explicit_specified = true; |
| FS_explicitLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::setFunctionSpecNoreturn(SourceLocation Loc, |
| const char *&PrevSpec, |
| unsigned &DiagID) { |
| // '_Noreturn _Noreturn' is ok, but warn as this is likely not what the user |
| // intended. |
| if (FS_noreturn_specified) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "_Noreturn"; |
| return true; |
| } |
| FS_noreturn_specified = true; |
| FS_noreturnLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetFriendSpec(SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID) { |
| if (Friend_specified) { |
| PrevSpec = "friend"; |
| // Keep the later location, so that we can later diagnose ill-formed |
| // declarations like 'friend class X friend;'. Per [class.friend]p3, |
| // 'friend' must be the first token in a friend declaration that is |
| // not a function declaration. |
| FriendLoc = Loc; |
| DiagID = diag::warn_duplicate_declspec; |
| return true; |
| } |
| |
| Friend_specified = true; |
| FriendLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::setModulePrivateSpec(SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID) { |
| if (isModulePrivateSpecified()) { |
| PrevSpec = "__module_private__"; |
| DiagID = diag::ext_warn_duplicate_declspec; |
| return true; |
| } |
| |
| ModulePrivateLoc = Loc; |
| return false; |
| } |
| |
| bool DeclSpec::SetConstexprSpec(SourceLocation Loc, const char *&PrevSpec, |
| unsigned &DiagID) { |
| // 'constexpr constexpr' is ok, but warn as this is likely not what the user |
| // intended. |
| if (Constexpr_specified) { |
| DiagID = diag::warn_duplicate_declspec; |
| PrevSpec = "constexpr"; |
| return true; |
| } |
| Constexpr_specified = true; |
| ConstexprLoc = Loc; |
| return false; |
| } |
| |
| void DeclSpec::SaveWrittenBuiltinSpecs() { |
| writtenBS.Sign = getTypeSpecSign(); |
| writtenBS.Width = getTypeSpecWidth(); |
| writtenBS.Type = getTypeSpecType(); |
| // Search the list of attributes for the presence of a mode attribute. |
| writtenBS.ModeAttr = getAttributes().hasAttribute(ParsedAttr::AT_Mode); |
| } |
| |
| /// Finish - This does final analysis of the declspec, rejecting things like |
| /// "_Imaginary" (lacking an FP type). This returns a diagnostic to issue or |
| /// diag::NUM_DIAGNOSTICS if there is no error. After calling this method, |
| /// DeclSpec is guaranteed self-consistent, even if an error occurred. |
| void DeclSpec::Finish(Sema &S, const PrintingPolicy &Policy) { |
| // Before possibly changing their values, save specs as written. |
| SaveWrittenBuiltinSpecs(); |
| |
| // Check the type specifier components first. |
| |
| // If decltype(auto) is used, no other type specifiers are permitted. |
| if (TypeSpecType == TST_decltype_auto && |
| (TypeSpecWidth != TSW_unspecified || |
| TypeSpecComplex != TSC_unspecified || |
| TypeSpecSign != TSS_unspecified || |
| TypeAltiVecVector || TypeAltiVecPixel || TypeAltiVecBool || |
| TypeQualifiers)) { |
| const unsigned NumLocs = 9; |
| SourceLocation ExtraLocs[NumLocs] = { |
| TSWRange.getBegin(), TSCLoc, TSSLoc, |
| AltiVecLoc, TQ_constLoc, TQ_restrictLoc, |
| TQ_volatileLoc, TQ_atomicLoc, TQ_unalignedLoc}; |
| FixItHint Hints[NumLocs]; |
| SourceLocation FirstLoc; |
| for (unsigned I = 0; I != NumLocs; ++I) { |
| if (ExtraLocs[I].isValid()) { |
| if (FirstLoc.isInvalid() || |
| S.getSourceManager().isBeforeInTranslationUnit(ExtraLocs[I], |
| FirstLoc)) |
| FirstLoc = ExtraLocs[I]; |
| Hints[I] = FixItHint::CreateRemoval(ExtraLocs[I]); |
| } |
| } |
| TypeSpecWidth = TSW_unspecified; |
| TypeSpecComplex = TSC_unspecified; |
| TypeSpecSign = TSS_unspecified; |
| TypeAltiVecVector = TypeAltiVecPixel = TypeAltiVecBool = false; |
| TypeQualifiers = 0; |
| S.Diag(TSTLoc, diag::err_decltype_auto_cannot_be_combined) |
| << Hints[0] << Hints[1] << Hints[2] << Hints[3] |
| << Hints[4] << Hints[5] << Hints[6] << Hints[7]; |
| } |
| |
| // Validate and finalize AltiVec vector declspec. |
| if (TypeAltiVecVector) { |
| if (TypeAltiVecBool) { |
| // Sign specifiers are not allowed with vector bool. (PIM 2.1) |
| if (TypeSpecSign != TSS_unspecified) { |
| S.Diag(TSSLoc, diag::err_invalid_vector_bool_decl_spec) |
| << getSpecifierName((TSS)TypeSpecSign); |
| } |
| |
| // Only char/int are valid with vector bool. (PIM 2.1) |
| if (((TypeSpecType != TST_unspecified) && (TypeSpecType != TST_char) && |
| (TypeSpecType != TST_int)) || TypeAltiVecPixel) { |
| S.Diag(TSTLoc, diag::err_invalid_vector_bool_decl_spec) |
| << (TypeAltiVecPixel ? "__pixel" : |
| getSpecifierName((TST)TypeSpecType, Policy)); |
| } |
| |
| // Only 'short' and 'long long' are valid with vector bool. (PIM 2.1) |
| if ((TypeSpecWidth != TSW_unspecified) && (TypeSpecWidth != TSW_short) && |
| (TypeSpecWidth != TSW_longlong)) |
| S.Diag(TSWRange.getBegin(), diag::err_invalid_vector_bool_decl_spec) |
| << getSpecifierName((TSW)TypeSpecWidth); |
| |
| // vector bool long long requires VSX support or ZVector. |
| if ((TypeSpecWidth == TSW_longlong) && |
| (!S.Context.getTargetInfo().hasFeature("vsx")) && |
| (!S.Context.getTargetInfo().hasFeature("power8-vector")) && |
| !S.getLangOpts().ZVector) |
| S.Diag(TSTLoc, diag::err_invalid_vector_long_long_decl_spec); |
| |
| // Elements of vector bool are interpreted as unsigned. (PIM 2.1) |
| if ((TypeSpecType == TST_char) || (TypeSpecType == TST_int) || |
| (TypeSpecWidth != TSW_unspecified)) |
| TypeSpecSign = TSS_unsigned; |
| } else if (TypeSpecType == TST_double) { |
| // vector long double and vector long long double are never allowed. |
| // vector double is OK for Power7 and later, and ZVector. |
| if (TypeSpecWidth == TSW_long || TypeSpecWidth == TSW_longlong) |
| S.Diag(TSWRange.getBegin(), |
| diag::err_invalid_vector_long_double_decl_spec); |
| else if (!S.Context.getTargetInfo().hasFeature("vsx") && |
| !S.getLangOpts().ZVector) |
| S.Diag(TSTLoc, diag::err_invalid_vector_double_decl_spec); |
| } else if (TypeSpecType == TST_float) { |
| // vector float is unsupported for ZVector unless we have the |
| // vector-enhancements facility 1 (ISA revision 12). |
| if (S.getLangOpts().ZVector && |
| !S.Context.getTargetInfo().hasFeature("arch12")) |
| S.Diag(TSTLoc, diag::err_invalid_vector_float_decl_spec); |
| } else if (TypeSpecWidth == TSW_long) { |
| // vector long is unsupported for ZVector and deprecated for AltiVec. |
| if (S.getLangOpts().ZVector) |
| S.Diag(TSWRange.getBegin(), diag::err_invalid_vector_long_decl_spec); |
| else |
| S.Diag(TSWRange.getBegin(), |
| diag::warn_vector_long_decl_spec_combination) |
| << getSpecifierName((TST)TypeSpecType, Policy); |
| } |
| |
| if (TypeAltiVecPixel) { |
| //TODO: perform validation |
| TypeSpecType = TST_int; |
| TypeSpecSign = TSS_unsigned; |
| TypeSpecWidth = TSW_short; |
| TypeSpecOwned = false; |
| } |
| } |
| |
| bool IsFixedPointType = |
| TypeSpecType == TST_accum || TypeSpecType == TST_fract; |
| |
| // signed/unsigned are only valid with int/char/wchar_t/_Accum. |
| if (TypeSpecSign != TSS_unspecified) { |
| if (TypeSpecType == TST_unspecified) |
| TypeSpecType = TST_int; // unsigned -> unsigned int, signed -> signed int. |
| else if (TypeSpecType != TST_int && TypeSpecType != TST_int128 && |
| TypeSpecType != TST_char && TypeSpecType != TST_wchar && |
| !IsFixedPointType) { |
| S.Diag(TSSLoc, diag::err_invalid_sign_spec) |
| << getSpecifierName((TST)TypeSpecType, Policy); |
| // signed double -> double. |
| TypeSpecSign = TSS_unspecified; |
| } |
| } |
| |
| // Validate the width of the type. |
| switch (TypeSpecWidth) { |
| case TSW_unspecified: break; |
| case TSW_short: // short int |
| case TSW_longlong: // long long int |
| if (TypeSpecType == TST_unspecified) |
| TypeSpecType = TST_int; // short -> short int, long long -> long long int. |
| else if (!(TypeSpecType == TST_int || |
| (IsFixedPointType && TypeSpecWidth != TSW_longlong))) { |
| S.Diag(TSWRange.getBegin(), diag::err_invalid_width_spec) |
| << (int)TypeSpecWidth << getSpecifierName((TST)TypeSpecType, Policy); |
| TypeSpecType = TST_int; |
| TypeSpecSat = false; |
| TypeSpecOwned = false; |
| } |
| break; |
| case TSW_long: // long double, long int |
| if (TypeSpecType == TST_unspecified) |
| TypeSpecType = TST_int; // long -> long int. |
| else if (TypeSpecType != TST_int && TypeSpecType != TST_double && |
| !IsFixedPointType) { |
| S.Diag(TSWRange.getBegin(), diag::err_invalid_width_spec) |
| << (int)TypeSpecWidth << getSpecifierName((TST)TypeSpecType, Policy); |
| TypeSpecType = TST_int; |
| TypeSpecSat = false; |
| TypeSpecOwned = false; |
| } |
| break; |
| } |
| |
| // TODO: if the implementation does not implement _Complex or _Imaginary, |
| // disallow their use. Need information about the backend. |
| if (TypeSpecComplex != TSC_unspecified) { |
| if (TypeSpecType == TST_unspecified) { |
| S.Diag(TSCLoc, diag::ext_plain_complex) |
| << FixItHint::CreateInsertion( |
| S.getLocForEndOfToken(getTypeSpecComplexLoc()), |
| " double"); |
| TypeSpecType = TST_double; // _Complex -> _Complex double. |
| } else if (TypeSpecType == TST_int || TypeSpecType == TST_char) { |
| // Note that this intentionally doesn't include _Complex _Bool. |
| if (!S.getLangOpts().CPlusPlus) |
| S.Diag(TSTLoc, diag::ext_integer_complex); |
| } else if (TypeSpecType != TST_float && TypeSpecType != TST_double) { |
| S.Diag(TSCLoc, diag::err_invalid_complex_spec) |
| << getSpecifierName((TST)TypeSpecType, Policy); |
| TypeSpecComplex = TSC_unspecified; |
| } |
| } |
| |
| // C11 6.7.1/3, C++11 [dcl.stc]p1, GNU TLS: __thread, thread_local and |
| // _Thread_local can only appear with the 'static' and 'extern' storage class |
| // specifiers. We also allow __private_extern__ as an extension. |
| if (ThreadStorageClassSpec != TSCS_unspecified) { |
| switch (StorageClassSpec) { |
| case SCS_unspecified: |
| case SCS_extern: |
| case SCS_private_extern: |
| case SCS_static: |
| break; |
| default: |
| if (S.getSourceManager().isBeforeInTranslationUnit( |
| getThreadStorageClassSpecLoc(), getStorageClassSpecLoc())) |
| S.Diag(getStorageClassSpecLoc(), |
| diag::err_invalid_decl_spec_combination) |
| << DeclSpec::getSpecifierName(getThreadStorageClassSpec()) |
| << SourceRange(getThreadStorageClassSpecLoc()); |
| else |
| S.Diag(getThreadStorageClassSpecLoc(), |
| diag::err_invalid_decl_spec_combination) |
| << DeclSpec::getSpecifierName(getStorageClassSpec()) |
| << SourceRange(getStorageClassSpecLoc()); |
| // Discard the thread storage class specifier to recover. |
| ThreadStorageClassSpec = TSCS_unspecified; |
| ThreadStorageClassSpecLoc = SourceLocation(); |
| } |
| } |
| |
| // If no type specifier was provided and we're parsing a language where |
| // the type specifier is not optional, but we got 'auto' as a storage |
| // class specifier, then assume this is an attempt to use C++0x's 'auto' |
| // type specifier. |
| if (S.getLangOpts().CPlusPlus && |
| TypeSpecType == TST_unspecified && StorageClassSpec == SCS_auto) { |
| TypeSpecType = TST_auto; |
| StorageClassSpec = SCS_unspecified; |
| TSTLoc = TSTNameLoc = StorageClassSpecLoc; |
| StorageClassSpecLoc = SourceLocation(); |
| } |
| // Diagnose if we've recovered from an ill-formed 'auto' storage class |
| // specifier in a pre-C++11 dialect of C++. |
| if (!S.getLangOpts().CPlusPlus11 && TypeSpecType == TST_auto) |
| S.Diag(TSTLoc, diag::ext_auto_type_specifier); |
| if (S.getLangOpts().CPlusPlus && !S.getLangOpts().CPlusPlus11 && |
| StorageClassSpec == SCS_auto) |
| S.Diag(StorageClassSpecLoc, diag::warn_auto_storage_class) |
| << FixItHint::CreateRemoval(StorageClassSpecLoc); |
| if (TypeSpecType == TST_char8) |
| S.Diag(TSTLoc, diag::warn_cxx17_compat_unicode_type); |
| else if (TypeSpecType == TST_char16 || TypeSpecType == TST_char32) |
| S.Diag(TSTLoc, diag::warn_cxx98_compat_unicode_type) |
| << (TypeSpecType == TST_char16 ? "char16_t" : "char32_t"); |
| if (Constexpr_specified) |
| S.Diag(ConstexprLoc, diag::warn_cxx98_compat_constexpr); |
| |
| // C++ [class.friend]p6: |
| // No storage-class-specifier shall appear in the decl-specifier-seq |
| // of a friend declaration. |
| if (isFriendSpecified() && |
| (getStorageClassSpec() || getThreadStorageClassSpec())) { |
| SmallString<32> SpecName; |
| SourceLocation SCLoc; |
| FixItHint StorageHint, ThreadHint; |
| |
| if (DeclSpec::SCS SC = getStorageClassSpec()) { |
| SpecName = getSpecifierName(SC); |
| SCLoc = getStorageClassSpecLoc(); |
| StorageHint = FixItHint::CreateRemoval(SCLoc); |
| } |
| |
| if (DeclSpec::TSCS TSC = getThreadStorageClassSpec()) { |
| if (!SpecName.empty()) SpecName += " "; |
| SpecName += getSpecifierName(TSC); |
| SCLoc = getThreadStorageClassSpecLoc(); |
| ThreadHint = FixItHint::CreateRemoval(SCLoc); |
| } |
| |
| S.Diag(SCLoc, diag::err_friend_decl_spec) |
| << SpecName << StorageHint << ThreadHint; |
| |
| ClearStorageClassSpecs(); |
| } |
| |
| // C++11 [dcl.fct.spec]p5: |
| // The virtual specifier shall be used only in the initial |
| // declaration of a non-static class member function; |
| // C++11 [dcl.fct.spec]p6: |
| // The explicit specifier shall be used only in the declaration of |
| // a constructor or conversion function within its class |
| // definition; |
| if (isFriendSpecified() && (isVirtualSpecified() || isExplicitSpecified())) { |
| StringRef Keyword; |
| SourceLocation SCLoc; |
| |
| if (isVirtualSpecified()) { |
| Keyword = "virtual"; |
| SCLoc = getVirtualSpecLoc(); |
| } else { |
| Keyword = "explicit"; |
| SCLoc = getExplicitSpecLoc(); |
| } |
| |
| FixItHint Hint = FixItHint::CreateRemoval(SCLoc); |
| S.Diag(SCLoc, diag::err_friend_decl_spec) |
| << Keyword << Hint; |
| |
| FS_virtual_specified = FS_explicit_specified = false; |
| FS_virtualLoc = FS_explicitLoc = SourceLocation(); |
| } |
| |
| assert(!TypeSpecOwned || isDeclRep((TST) TypeSpecType)); |
| |
| // Okay, now we can infer the real type. |
| |
| // TODO: return "auto function" and other bad things based on the real type. |
| |
| // 'data definition has no type or storage class'? |
| } |
| |
| bool DeclSpec::isMissingDeclaratorOk() { |
| TST tst = getTypeSpecType(); |
| return isDeclRep(tst) && getRepAsDecl() != nullptr && |
| StorageClassSpec != DeclSpec::SCS_typedef; |
| } |
| |
| void UnqualifiedId::setOperatorFunctionId(SourceLocation OperatorLoc, |
| OverloadedOperatorKind Op, |
| SourceLocation SymbolLocations[3]) { |
| Kind = UnqualifiedIdKind::IK_OperatorFunctionId; |
| StartLocation = OperatorLoc; |
| EndLocation = OperatorLoc; |
| OperatorFunctionId.Operator = Op; |
| for (unsigned I = 0; I != 3; ++I) { |
| OperatorFunctionId.SymbolLocations[I] = SymbolLocations[I].getRawEncoding(); |
| |
| if (SymbolLocations[I].isValid()) |
| EndLocation = SymbolLocations[I]; |
| } |
| } |
| |
| bool VirtSpecifiers::SetSpecifier(Specifier VS, SourceLocation Loc, |
| const char *&PrevSpec) { |
| if (!FirstLocation.isValid()) |
| FirstLocation = Loc; |
| LastLocation = Loc; |
| LastSpecifier = VS; |
| |
| if (Specifiers & VS) { |
| PrevSpec = getSpecifierName(VS); |
| return true; |
| } |
| |
| Specifiers |= VS; |
| |
| switch (VS) { |
| default: llvm_unreachable("Unknown specifier!"); |
| case VS_Override: VS_overrideLoc = Loc; break; |
| case VS_GNU_Final: |
| case VS_Sealed: |
| case VS_Final: VS_finalLoc = Loc; break; |
| } |
| |
| return false; |
| } |
| |
| const char *VirtSpecifiers::getSpecifierName(Specifier VS) { |
| switch (VS) { |
| default: llvm_unreachable("Unknown specifier"); |
| case VS_Override: return "override"; |
| case VS_Final: return "final"; |
| case VS_GNU_Final: return "__final"; |
| case VS_Sealed: return "sealed"; |
| } |
| } |