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clang
3.8.0
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#include "clang/Sema/SemaInternal.h"#include "clang/AST/ASTContext.h"#include "clang/AST/CXXInheritance.h"#include "clang/AST/ExprCXX.h"#include "clang/AST/ExprObjC.h"#include "clang/AST/RecordLayout.h"#include "clang/Basic/PartialDiagnostic.h"#include "clang/Basic/TargetInfo.h"#include "clang/Sema/Initialization.h"#include "llvm/ADT/SmallVector.h"#include <set>Go to the source code of this file.
Enumerations | |
| enum | TryCastResult { TC_NotApplicable, TC_Success, TC_Failed } |
| enum | CastType { CT_Const, CT_Static, CT_Reinterpret, CT_Dynamic, CT_CStyle, CT_Functional } |
Functions | |
| static TryCastResult | TryLValueToRValueCast (Sema &Self, Expr *SrcExpr, QualType DestType, bool CStyle, CastKind &Kind, CXXCastPath &BasePath, unsigned &msg) |
| Tests whether a conversion according to N2844 is valid. More... | |
| static TryCastResult | TryStaticReferenceDowncast (Sema &Self, Expr *SrcExpr, QualType DestType, bool CStyle, SourceRange OpRange, unsigned &msg, CastKind &Kind, CXXCastPath &BasePath) |
| Tests whether a conversion according to C++ 5.2.9p5 is valid. More... | |
| static TryCastResult | TryStaticPointerDowncast (Sema &Self, QualType SrcType, QualType DestType, bool CStyle, SourceRange OpRange, unsigned &msg, CastKind &Kind, CXXCastPath &BasePath) |
| Tests whether a conversion according to C++ 5.2.9p8 is valid. More... | |
| static TryCastResult | TryStaticDowncast (Sema &Self, CanQualType SrcType, CanQualType DestType, bool CStyle, SourceRange OpRange, QualType OrigSrcType, QualType OrigDestType, unsigned &msg, CastKind &Kind, CXXCastPath &BasePath) |
| TryStaticDowncast - Common functionality of TryStaticReferenceDowncast and TryStaticPointerDowncast. More... | |
| static TryCastResult | TryStaticMemberPointerUpcast (Sema &Self, ExprResult &SrcExpr, QualType SrcType, QualType DestType, bool CStyle, SourceRange OpRange, unsigned &msg, CastKind &Kind, CXXCastPath &BasePath) |
| TryStaticMemberPointerUpcast - Tests whether a conversion according to C++ 5.2.9p9 is valid: More... | |
| static TryCastResult | TryStaticImplicitCast (Sema &Self, ExprResult &SrcExpr, QualType DestType, Sema::CheckedConversionKind CCK, SourceRange OpRange, unsigned &msg, CastKind &Kind, bool ListInitialization) |
| TryStaticImplicitCast - Tests whether a conversion according to C++ 5.2.9p2 is valid: More... | |
| static TryCastResult | TryStaticCast (Sema &Self, ExprResult &SrcExpr, QualType DestType, Sema::CheckedConversionKind CCK, SourceRange OpRange, unsigned &msg, CastKind &Kind, CXXCastPath &BasePath, bool ListInitialization) |
| TryStaticCast - Check if a static cast can be performed, and do so if possible. More... | |
| static TryCastResult | TryConstCast (Sema &Self, ExprResult &SrcExpr, QualType DestType, bool CStyle, unsigned &msg) |
| TryConstCast - See if a const_cast from source to destination is allowed, and perform it if it is. More... | |
| static TryCastResult | TryReinterpretCast (Sema &Self, ExprResult &SrcExpr, QualType DestType, bool CStyle, SourceRange OpRange, unsigned &msg, CastKind &Kind) |
| static bool | tryDiagnoseOverloadedCast (Sema &S, CastType CT, SourceRange range, Expr *src, QualType destType, bool listInitialization) |
| Try to diagnose a failed overloaded cast. More... | |
| static void | diagnoseBadCast (Sema &S, unsigned msg, CastType castType, SourceRange opRange, Expr *src, QualType destType, bool listInitialization) |
| Diagnose a failed cast. More... | |
| static bool | UnwrapDissimilarPointerTypes (QualType &T1, QualType &T2) |
| UnwrapDissimilarPointerTypes - Like Sema::UnwrapSimilarPointerTypes, this removes one level of indirection from both types, provided that they're the same kind of pointer (plain or to-member). More... | |
| static bool | CastsAwayConstness (Sema &Self, QualType SrcType, QualType DestType, bool CheckCVR, bool CheckObjCLifetime, QualType *TheOffendingSrcType=nullptr, QualType *TheOffendingDestType=nullptr, Qualifiers *CastAwayQualifiers=nullptr) |
| CastsAwayConstness - Check if the pointer conversion from SrcType to DestType casts away constness as defined in C++ 5.2.11p8ff. More... | |
| static void | DiagnoseReinterpretUpDownCast (Sema &Self, const Expr *SrcExpr, QualType DestType, SourceRange OpRange) |
| Check that a reinterpret_cast<DestType>(SrcExpr) is not used as upcast or downcast between respective pointers or references. More... | |
| static void | DiagnoseCastOfObjCSEL (Sema &Self, const ExprResult &SrcExpr, QualType DestType) |
| static void | checkIntToPointerCast (bool CStyle, SourceLocation Loc, const Expr *SrcExpr, QualType DestType, Sema &Self) |
| static void | DiagnoseBadFunctionCast (Sema &Self, const ExprResult &SrcExpr, QualType DestType) |
| DiagnoseBadFunctionCast - Warn whenever a function call is cast to a non-matching type. More... | |
| enum CastType |
| Enumerator | |
|---|---|
| CT_Const |
const_cast |
| CT_Static |
static_cast |
| CT_Reinterpret |
reinterpret_cast |
| CT_Dynamic |
dynamic_cast |
| CT_CStyle |
(Type)expr |
| CT_Functional |
Type(expr) |
Definition at line 39 of file SemaCast.cpp.
| enum TryCastResult |
Definition at line 32 of file SemaCast.cpp.
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CastsAwayConstness - Check if the pointer conversion from SrcType to DestType casts away constness as defined in C++ 5.2.11p8ff.
This is used by the cast checkers. Both arguments must denote pointer (possibly to member) types.
| CheckCVR | Whether to check for const/volatile/restrict qualifiers. |
| CheckObjCLifetime | Whether to check Objective-C lifetime qualifiers. |
Definition at line 486 of file SemaCast.cpp.
References clang::Qualifiers::compatiblyIncludesObjCLifetime(), clang::Sema::Context, Context, clang::ASTContext::getCanonicalType(), clang::Qualifiers::getCVRQualifiers(), clang::ASTContext::getLangOpts(), clang::ASTContext::getPointerType(), clang::ASTContext::getQualifiedType(), clang::ASTContext::getUnqualifiedArrayType(), clang::Type::isAnyPointerType(), clang::Type::isBlockPointerType(), clang::Type::isMemberPointerType(), clang::Sema::IsQualificationConversion(), clang::Qualifiers::setCVRQualifiers(), UnwrapDissimilarPointerTypes(), and clang::ASTContext::VoidTy.
Referenced by TryReinterpretCast().
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Definition at line 1727 of file SemaCast.cpp.
References clang::Sema::Context, Diag(), clang::Sema::Diag(), clang::Expr::getType(), clang::ASTContext::getTypeSize(), clang::Type::isBooleanType(), clang::Type::isEnumeralType(), clang::Expr::isIntegerConstantExpr(), clang::Type::isIntegralType(), and clang::Type::isVoidPointerType().
Referenced by TryReinterpretCast().
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Diagnose a failed cast.
Definition at line 382 of file SemaCast.cpp.
References clang::Sema::Diag(), clang::Type::getAs(), clang::Type::getAsCXXRecordDecl(), clang::SourceRange::getBegin(), clang::Type::getPointeeType(), clang::Expr::getType(), and tryDiagnoseOverloadedCast().
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DiagnoseBadFunctionCast - Warn whenever a function call is cast to a non-matching type.
Such as enum function call to int, int call to pointer; etc. Cast to 'void' is an exception.
Definition at line 2186 of file SemaCast.cpp.
References clang::Sema::Diag(), clang::Sema::Diags, clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::QualType::getUnqualifiedType(), clang::Type::isAnyPointerType(), clang::Type::isBlockPointerType(), clang::Type::isBooleanType(), clang::Type::isComplexIntegerType(), clang::Type::isComplexType(), clang::Type::isEnumeralType(), clang::DiagnosticsEngine::isIgnored(), clang::Type::isIntegerType(), clang::Type::isRealFloatingType(), and clang::Type::isVoidType().
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Definition at line 1710 of file SemaCast.cpp.
References clang::Sema::Context, clang::Sema::Diag(), clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::Type::getAs(), clang::Type::getPointeeType(), clang::QualType::getUnqualifiedType(), clang::ASTContext::hasSameType(), and clang::Type::isVoidType().
Referenced by TryReinterpretCast().
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Check that a reinterpret_cast<DestType>(SrcExpr) is not used as upcast or downcast between respective pointers or references.
Definition at line 745 of file SemaCast.cpp.
References clang::CXXBasePaths::begin(), clang::Sema::Context, clang::FixItHint::CreateReplacement(), clang::Sema::Diag(), E, clang::CXXBasePaths::end(), clang::Type::getAsCXXRecordDecl(), clang::ASTContext::getASTRecordLayout(), clang::ASTRecordLayout::getBaseClassOffset(), clang::SourceRange::getBegin(), clang::CXXRecordDecl::getDefinition(), clang::Type::getPointeeCXXRecordDecl(), clang::Expr::getType(), I, clang::TagDecl::isCompleteDefinition(), clang::CXXRecordDecl::isDerivedFrom(), clang::Decl::isInvalidDecl(), clang::CharUnits::isZero(), and clang::CharUnits::Zero().
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TryConstCast - See if a const_cast from source to destination is allowed, and perform it if it is.
Definition at line 1543 of file SemaCast.cpp.
References clang::Sema::Context, clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::Type::getAs(), clang::ASTContext::getCanonicalType(), clang::ASTContext::getPointerType(), clang::ASTContext::getUnqualifiedArrayType(), clang::Type::isFunctionPointerType(), clang::Type::isMemberFunctionPointerType(), clang::Type::isMemberPointerType(), clang::Type::isObjCObjectPointerType(), clang::Type::isPointerType(), clang::Type::isRecordType(), clang::Qualifiers::removeCVRQualifiers(), TC_NotApplicable, TC_Success, and clang::ASTContext::UnwrapSimilarPointerTypes().
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Try to diagnose a failed overloaded cast.
Returns true if diagnostics were emitted.
Definition at line 306 of file SemaCast.cpp.
References clang::InitializationKind::CreateCast(), clang::InitializationKind::CreateCStyleCast(), clang::InitializationKind::CreateFunctionalCast(), CT_Const, CT_CStyle, CT_Dynamic, CT_Functional, CT_Reinterpret, CT_Static, clang::Sema::Diag(), clang::OverloadCandidateSet::empty(), clang::InitializationSequence::Failed(), clang::InitializationSequence::FK_ConstructorOverloadFailed, clang::InitializationSequence::FK_UserConversionOverloadFailed, clang::SourceRange::getBegin(), clang::InitializationSequence::getFailedCandidateSet(), clang::InitializationSequence::getFailedOverloadResult(), clang::InitializationSequence::getFailureKind(), clang::Expr::getType(), clang::InitializedEntity::InitializeTemporary(), clang::Type::isRecordType(), clang::OverloadCandidateSet::NoteCandidates(), clang::OCD_AllCandidates, clang::OCD_ViableCandidates, clang::OR_Ambiguous, clang::OR_Deleted, clang::OR_No_Viable_Function, and clang::OR_Success.
Referenced by diagnoseBadCast().
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Tests whether a conversion according to N2844 is valid.
Definition at line 1134 of file SemaCast.cpp.
References clang::Sema::BuildBasePathArray(), clang::CK_DerivedToBase, clang::CK_NoOp, clang::Sema::CompareReferenceRelationship(), clang::Type::getAs(), clang::ReferenceType::getPointeeType(), clang::Expr::getType(), clang::QualType::getUnqualifiedType(), clang::Sema::IsDerivedFrom(), clang::Expr::isGLValue(), clang::Sema::Ref_Compatible_With_Added_Qualification, TC_Failed, TC_NotApplicable, and TC_Success.
Referenced by TryStaticCast().
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Definition at line 1753 of file SemaCast.cpp.
References clang::Sema::areLaxCompatibleVectorTypes(), CastsAwayConstness(), clang::Sema::CheckCompatibleReinterpretCast(), checkIntToPointerCast(), clang::CK_AnyPointerToBlockPointerCast, clang::CK_BitCast, clang::CK_IntegralToPointer, clang::CK_LValueBitCast, clang::CK_NoOp, clang::CK_PointerToIntegral, clang::CK_ReinterpretMemberPointer, clang::Sema::Context, clang::Sema::Diag(), DiagnoseCastOfObjCSEL(), clang::ExprError(), clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::Type::getAs(), clang::SourceRange::getBegin(), clang::ASTContext::getCanonicalType(), clang::TargetInfo::getCXXABI(), clang::Sema::getLangOpts(), clang::ASTContext::getPointerType(), clang::ASTContext::getTargetInfo(), clang::ASTContext::getTypeSize(), clang::Expr::getValueKindForType(), clang::Type::isAnyPointerType(), clang::Type::isBlockPointerType(), clang::Type::isBooleanType(), clang::Sema::isCompleteType(), clang::Type::isFunctionPointerType(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isIntegralType(), clang::MemberPointerType::isMemberFunctionPointer(), clang::Type::isMemberPointerType(), clang::TargetCXXABI::isMicrosoft(), clang::Type::isNullPtrType(), clang::Type::isObjCObjectPointerType(), clang::ActionResult< PtrTy, CompressInvalid >::isUsable(), clang::Type::isVectorType(), clang::OK_BitField, clang::OK_ObjCProperty, clang::OK_ObjCSubscript, clang::OK_Ordinary, clang::OK_VectorComponent, clang::ASTContext::OverloadTy, clang::Sema::PrepareCastToObjCObjectPointer(), clang::Sema::ResolveAndFixSingleFunctionTemplateSpecialization(), clang::Result, TC_Failed, TC_NotApplicable, TC_Success, and clang::VK_RValue.
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TryStaticCast - Check if a static cast can be performed, and do so if possible.
If CStyle, ignore access restrictions on hierarchy casting and casting away constness.
Definition at line 944 of file SemaCast.cpp.
References clang::Sema::CCK_CStyleCast, clang::Sema::CCK_FunctionalCast, clang::Sema::CheckTollFreeBridgeStaticCast(), clang::CK_AnyPointerToBlockPointerCast, clang::CK_BitCast, clang::CK_CPointerToObjCPointerCast, clang::CK_FloatingToIntegral, clang::CK_IntegralCast, clang::CK_IntegralToBoolean, clang::CK_IntegralToFloating, clang::Qualifiers::compatiblyIncludes(), clang::Sema::Context, clang::Sema::Diag(), clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::Type::getAs(), clang::ASTContext::getCanonicalType(), clang::Sema::getLangOpts(), clang::Type::getPointeeType(), clang::PointerType::getPointeeType(), clang::QualType::getQualifiers(), clang::Type::isBlockPointerType(), clang::Type::isBooleanType(), clang::Type::isEnumeralType(), clang::Type::isFunctionType(), clang::Type::isIncompleteOrObjectType(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isIntegralType(), clang::ActionResult< PtrTy, CompressInvalid >::isInvalid(), clang::Type::isObjCObjectPointerType(), clang::Type::isRealFloatingType(), clang::Type::isVoidType(), clang::Qualifiers::removeObjCGCAttr(), clang::Qualifiers::removeObjCLifetime(), TC_Failed, TC_NotApplicable, TC_Success, TryLValueToRValueCast(), TryStaticImplicitCast(), TryStaticMemberPointerUpcast(), TryStaticPointerDowncast(), and TryStaticReferenceDowncast().
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TryStaticDowncast - Common functionality of TryStaticReferenceDowncast and TryStaticPointerDowncast.
Tests whether a static downcast from SrcType to DestType is possible and allowed.
Definition at line 1260 of file SemaCast.cpp.
References clang::Sema::AR_accessible, clang::Sema::AR_delayed, clang::Sema::AR_dependent, clang::Sema::AR_inaccessible, clang::CXXBasePaths::begin(), clang::Sema::BuildBasePathArray(), clang::Sema::CheckBaseClassAccess(), clang::CK_BaseToDerived, clang::CXXBasePaths::clear(), clang::Sema::Diag(), clang::CXXBasePaths::end(), clang::CXXBasePaths::front(), clang::CanQual< T >::getAs(), clang::QualType::getAsString(), clang::SourceRange::getBegin(), clang::CXXBasePaths::getDetectedVirtual(), clang::QualType::getUnqualifiedType(), clang::CXXBasePaths::isAmbiguous(), clang::CanQual< T >::isAtLeastAsQualifiedAs(), clang::Sema::isCompleteType(), clang::Sema::IsDerivedFrom(), clang::CXXBasePaths::isRecordingPaths(), clang::CXXBasePaths::setRecordingPaths(), TC_Failed, TC_NotApplicable, and TC_Success.
Referenced by TryStaticPointerDowncast(), and TryStaticReferenceDowncast().
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TryStaticImplicitCast - Tests whether a conversion according to C++ 5.2.9p2 is valid:
An expression e can be explicitly converted to a type T using a static_cast if the declaration "T t(e);" is well-formed [...].
Definition at line 1491 of file SemaCast.cpp.
References clang::Sema::CCK_CStyleCast, clang::Sema::CCK_FunctionalCast, clang::CK_ConstructorConversion, clang::CK_NoOp, clang::InitializationKind::CreateCast(), clang::InitializationKind::CreateCStyleCast(), clang::InitializationKind::CreateFunctionalCast(), clang::InitializationSequence::Failed(), clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::SourceRange::getBegin(), clang::InitializedEntity::InitializeTemporary(), clang::InitializationSequence::isConstructorInitialization(), clang::ActionResult< PtrTy, CompressInvalid >::isInvalid(), clang::Type::isRecordType(), clang::Type::isReferenceType(), clang::InitializationSequence::Perform(), clang::Sema::RequireCompleteType(), clang::Sema::RequireNonAbstractType(), clang::Result, TC_Failed, TC_NotApplicable, and TC_Success.
Referenced by TryStaticCast().
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TryStaticMemberPointerUpcast - Tests whether a conversion according to C++ 5.2.9p9 is valid:
An rvalue of type "pointer to member of D of type cv1 T" can be converted to an rvalue of type "pointer to member of B of type cv2 T", where B is a base class of D [...].
Definition at line 1375 of file SemaCast.cpp.
References clang::Sema::AR_accessible, clang::Sema::AR_delayed, clang::Sema::AR_dependent, clang::Sema::AR_inaccessible, clang::Sema::BuildBasePathArray(), clang::Sema::CheckBaseClassAccess(), clang::CK_DerivedToBaseMemberPointer, clang::Sema::Context, clang::Sema::Diag(), clang::Sema::FixOverloadedFunctionReference(), clang::ActionResult< PtrTy, CompressInvalid >::get(), clang::Sema::getAmbiguousPathsDisplayString(), clang::Type::getAs(), clang::SourceRange::getBegin(), clang::ASTContext::getCanonicalType(), clang::MemberPointerType::getClass(), clang::TargetInfo::getCXXABI(), clang::ASTContext::getMemberPointerType(), clang::CXXMethodDecl::getParent(), clang::MemberPointerType::getPointeeType(), clang::ASTContext::getTargetInfo(), clang::ASTContext::getTypeDeclType(), clang::ASTContext::hasSameUnqualifiedType(), clang::Sema::isCompleteType(), clang::Sema::IsDerivedFrom(), clang::TargetCXXABI::isMicrosoft(), clang::ActionResult< PtrTy, CompressInvalid >::isUsable(), clang::ASTContext::OverloadTy, clang::Sema::ResolveAddressOfOverloadedFunction(), TC_Failed, TC_NotApplicable, and TC_Success.
Referenced by TryStaticCast().
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Tests whether a conversion according to C++ 5.2.9p8 is valid.
Definition at line 1226 of file SemaCast.cpp.
References clang::Sema::Context, clang::Type::getAs(), clang::ASTContext::getCanonicalType(), clang::PointerType::getPointeeType(), TC_NotApplicable, and TryStaticDowncast().
Referenced by TryStaticCast().
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Tests whether a conversion according to C++ 5.2.9p5 is valid.
Definition at line 1188 of file SemaCast.cpp.
References clang::Sema::Context, clang::Type::getAs(), clang::ASTContext::getCanonicalType(), clang::ReferenceType::getPointeeType(), clang::Expr::getType(), clang::Expr::isLValue(), clang::Type::isRValueReferenceType(), TC_NotApplicable, and TryStaticDowncast().
Referenced by TryStaticCast().
UnwrapDissimilarPointerTypes - Like Sema::UnwrapSimilarPointerTypes, this removes one level of indirection from both types, provided that they're the same kind of pointer (plain or to-member).
Unlike the Sema function, this one doesn't care if the two pointers-to-member don't point into the same class. This is because CastsAwayConstness doesn't care.
Definition at line 426 of file SemaCast.cpp.
References clang::Type::getAs(), clang::Type::getPointeeType(), clang::PointerType::getPointeeType(), clang::BlockPointerType::getPointeeType(), clang::MemberPointerType::getPointeeType(), and clang::ObjCObjectPointerType::getPointeeType().
Referenced by CastsAwayConstness().
1.8.6