clang
3.7.0
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#include "clang/Sema/SemaInternal.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTMutationListener.h"
#include "clang/AST/DataRecursiveASTVisitor.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprObjC.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Sema/DeclSpec.h"
#include "clang/Sema/ExternalSemaSource.h"
#include "clang/Sema/Lookup.h"
#include "clang/Sema/Scope.h"
#include "clang/Sema/ScopeInfo.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "TypeLocBuilder.h"
#include "clang/AST/DeclNodes.inc"
Go to the source code of this file.
Macros | |
#define | OBJCCONTAINER(type, base) |
#define | ABSTRACT_DECL(expansion) |
#define | DECL(type, base) case Decl::type: |
Typedefs | |
typedef llvm::DenseSet < IdentifierInfo * > | ProtocolNameSet |
typedef std::unique_ptr < ProtocolNameSet > | LazyProtocolNameSet |
Enumerations | |
enum | TypeParamListContext |
#define ABSTRACT_DECL | ( | expansion | ) |
#define DECL | ( | type, | |
base | |||
) | case Decl::type: |
#define OBJCCONTAINER | ( | type, | |
base | |||
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typedef std::unique_ptr<ProtocolNameSet> LazyProtocolNameSet |
Definition at line 2519 of file SemaDeclObjC.cpp.
typedef llvm::DenseSet<IdentifierInfo*> ProtocolNameSet |
FIXME: Type hierarchies in Objective-C can be deep. We could most likely improve the efficiency of selector lookups and type checking by associating with each protocol / interface / category the flattened instance tables. If we used an immutable set to keep the table then it wouldn't add significant memory cost and it would be handy for lookups.
Definition at line 2518 of file SemaDeclObjC.cpp.
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The context in which an Objective-C type parameter list occurs, for use in diagnostics.
Definition at line 719 of file SemaDeclObjC.cpp.
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In ARC, check whether the conventional meanings of the two methods match. If they don't, it's a hard error.
Definition at line 2350 of file SemaDeclObjC.cpp.
References clang::ast_matchers::decl, clang::Sema::Diag(), clang::Decl::getLocation(), clang::ObjCMethodDecl::getMethodFamily(), clang::ObjCMethodDecl::getReturnType(), clang::Decl::isInvalidDecl(), clang::Type::isObjCObjectPointerType(), clang::OMF_alloc, clang::OMF_autorelease, clang::OMF_copy, clang::OMF_dealloc, clang::OMF_finalize, clang::OMF_init, clang::OMF_initialize, clang::OMF_mutableCopy, clang::OMF_new, clang::OMF_None, clang::OMF_performSelector, clang::OMF_release, clang::OMF_retain, clang::OMF_retainCount, and clang::OMF_self.
Referenced by clang::Sema::WarnConflictingTypedMethods().
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Definition at line 2265 of file SemaDeclObjC.cpp.
References clang::Sema::Context, clang::Sema::Diag(), clang::Type::getAs(), clang::Decl::getDeclContext(), clang::NamedDecl::getDeclName(), clang::Decl::getLocation(), clang::Type::getNullability(), clang::ParmVarDecl::getObjCDeclQualifier(), clang::ValueDecl::getType(), getTypeRange(), clang::DeclaratorDecl::getTypeSourceInfo(), clang::ASTContext::hasSameNullabilityTypeQualifier(), clang::ASTContext::hasSameUnqualifiedType(), isObjCTypeSubstitutable(), clang::Decl::OBJC_TQ_CSNullability, and objcModifiersConflict().
Referenced by clang::Sema::CheckConflictingOverridingMethod(), clang::Sema::WarnConflictingTypedMethods(), and clang::Sema::WarnExactTypedMethods().
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Definition at line 2181 of file SemaDeclObjC.cpp.
References clang::Sema::Context, clang::Sema::Diag(), clang::Type::getAs(), clang::Decl::getDeclContext(), clang::NamedDecl::getDeclName(), clang::Decl::getLocation(), clang::Type::getNullability(), clang::ObjCMethodDecl::getObjCDeclQualifier(), clang::ObjCMethodDecl::getReturnType(), clang::ObjCMethodDecl::getReturnTypeSourceRange(), clang::ASTContext::hasSameNullabilityTypeQualifier(), clang::ASTContext::hasSameUnqualifiedType(), isObjCTypeSubstitutable(), clang::Decl::OBJC_TQ_CSNullability, and objcModifiersConflict().
Referenced by clang::Sema::CheckConflictingOverridingMethod(), clang::Sema::WarnConflictingTypedMethods(), and clang::Sema::WarnExactTypedMethods().
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CheckProtocolMethodDefs - This routine checks unimplemented methods Declared in protocol, and those referenced by it.
Definition at line 2545 of file SemaDeclObjC.cpp.
References AttributeLangSupport::C, clang::ObjCContainerDecl::class_methods(), clang::Sema::Context, DIAG, clang::Sema::Diags, findProtocolsWithExplicitImpls(), clang::IdentifierTable::get(), clang::ObjCCategoryDecl::getClassInterface(), clang::ObjCProtocolDecl::getDefinition(), clang::NamedDecl::getIdentifier(), clang::Sema::getLangOpts(), clang::SelectorTable::getSelector(), clang::ObjCInterfaceDecl::getSuperClass(), clang::Decl::hasAttr(), clang::ASTContext::Idents, clang::ObjCContainerDecl::instance_methods(), clang::DiagnosticsEngine::isIgnored(), clang::ObjCRuntime::isNeXTFamily(), clang::ObjCProtocolDecl::isThisDeclarationADefinition(), clang::ObjCInterfaceDecl::lookupInheritedClass(), clang::ObjCInterfaceDecl::lookupMethod(), clang::LangOptions::ObjCRuntime, clang::ObjCMethodDecl::Optional, clang::ObjCProtocolDecl::protocols(), clang::ASTContext::Selectors, and WarnUndefinedMethod().
Referenced by clang::Sema::ImplMethodsVsClassMethods().
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Check whether the declared result type of the given Objective-C method declaration is compatible with the method's class.
Definition at line 3715 of file SemaDeclObjC.cpp.
References clang::declaresSameEntity(), clang::Type::getAs(), clang::ObjCMethodDecl::getReturnType(), clang::Sema::RTC_Compatible, clang::Sema::RTC_Incompatible, and clang::Sema::RTC_Unknown.
Referenced by clang::Sema::ActOnMethodDeclaration().
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Check consistency between two Objective-C type parameter lists, e.g., between a category/extension and an @interface or between an @class and an @interface.
Definition at line 730 of file SemaDeclObjC.cpp.
References clang::ObjCTypeParamList::back(), clang::ObjCTypeParamList::begin(), clang::Sema::Context, clang::Contravariant, clang::Covariant, clang::FixItHint::CreateInsertion(), clang::FixItHint::CreateRemoval(), clang::FixItHint::CreateReplacement(), clang::Sema::Diag(), clang::QualType::getAsString(), clang::SourceRange::getBegin(), clang::Decl::getDeclContext(), clang::NamedDecl::getDeclName(), getDefinition(), clang::Decl::getLocation(), clang::Decl::getLocEnd(), clang::Preprocessor::getLocForEndOfToken(), clang::TypeDecl::getLocStart(), clang::ASTContext::getPrintingPolicy(), clang::TypeLoc::getSourceRange(), clang::ASTContext::getTrivialTypeSourceInfo(), clang::TypeSourceInfo::getTypeLoc(), clang::TypedefNameDecl::getTypeSourceInfo(), clang::TypedefNameDecl::getUnderlyingType(), clang::ObjCTypeParamDecl::getVariance(), clang::ObjCTypeParamDecl::getVarianceLoc(), clang::ObjCTypeParamDecl::hasExplicitBound(), clang::ASTContext::hasSameType(), clang::Invariant, clang::SourceLocation::isInvalid(), clang::Sema::PP, clang::TypedefNameDecl::setTypeSourceInfo(), clang::ObjCTypeParamDecl::setVariance(), and clang::ObjCTypeParamList::size().
Referenced by clang::Sema::ActOnForwardClassDeclaration(), clang::Sema::ActOnStartCategoryInterface(), and clang::Sema::ActOnStartClassInterface().
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CvtQTToAstBitMask - utility routine to produce an AST bitmask for objective-c's type qualifier from the parser version of the same info.
Definition at line 3707 of file SemaDeclObjC.cpp.
Referenced by clang::Sema::ActOnMethodDeclaration().
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Definition at line 254 of file SemaDeclObjC.cpp.
References clang::Sema::Diag(), clang::NamedDecl::getDeclName(), clang::Decl::getLocation(), and clang::Decl::isDeprecated().
Referenced by clang::Sema::ActOnStartCategoryImplementation(), clang::Sema::ActOnStartClassImplementation(), and clang::Sema::ActOnStartOfObjCMethodDef().
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Definition at line 454 of file SemaDeclObjC.cpp.
References clang::Sema::DiagnoseUseOfDecl().
Referenced by clang::Sema::ActOnStartCategoryInterface(), clang::Sema::ActOnStartClassInterface(), and clang::Sema::ActOnStartProtocolInterface().
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Definition at line 2521 of file SemaDeclObjC.cpp.
References clang::NamedDecl::getIdentifier(), clang::Decl::hasAttr(), and clang::ObjCProtocolDecl::protocols().
Referenced by CheckProtocolMethodDefs(), and findProtocolsWithExplicitImpls().
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Recursively populates a set with all conformed protocols in a class hierarchy that have the 'objc_protocol_requires_explicit_implementation' attribute.
Definition at line 2532 of file SemaDeclObjC.cpp.
References clang::ObjCInterfaceDecl::all_referenced_protocols(), findProtocolsWithExplicitImpls(), and clang::ObjCInterfaceDecl::getSuperClass().
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Definition at line 2170 of file SemaDeclObjC.cpp.
References clang::TypeLoc::getSourceRange(), and clang::TypeSourceInfo::getTypeLoc().
Referenced by CheckMethodOverrideParam().
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HasExplicitOwnershipAttr - returns true when pointer to ObjC pointer has explicit ownership attribute; false otherwise.
Definition at line 285 of file SemaDeclObjC.cpp.
References clang::Type::getAs(), clang::QualType::getLocalQualifiers(), clang::Type::getPointeeType(), clang::ValueDecl::getType(), and clang::Qualifiers::hasObjCLifetime().
Referenced by clang::Sema::ActOnStartOfObjCMethodDef().
Definition at line 3392 of file SemaDeclObjC.cpp.
References clang::QualType::isNull(), and clang::Sema::LookupMethodInObjectType().
Referenced by clang::Sema::SelectorsForTypoCorrection().
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Definition at line 3370 of file SemaDeclObjC.cpp.
References BestEditDistance, clang::Selector::getAsString(), clang::ObjCMethodDecl::getSelector(), and MaxEditDistance.
Referenced by clang::Sema::SelectorsForTypoCorrection().
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Determines if this is an "acceptable" loose mismatch in the global method pool. This exists mostly as a hack to get around certain global mismatches which we can't afford to make warnings / errors. Really, what we want is a way to take a method out of the global method pool.
Definition at line 3219 of file SemaDeclObjC.cpp.
References clang::Selector::getNameForSlot(), clang::ObjCMethodDecl::getReturnType(), clang::ObjCMethodDecl::getSelector(), clang::ObjCMethodDecl::isInstanceMethod(), clang::Type::isIntegerType(), and clang::Selector::isUnarySelector().
Referenced by clang::Sema::DiagnoseMultipleMethodInGlobalPool().
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Determines if type B can be substituted for type A. Returns true if we can guarantee that anything that the user will do to an object of type A can also be done to an object of type B. This is trivially true if the two types are the same, or if B is a subclass of A. It becomes more complex in cases where protocols are involved.
Object types in Objective-C describe the minimum requirements for an object, rather than providing a complete description of a type. For example, if A is a subclass of B, then B* may refer to an instance of A. The principle of substitutability means that we may use an instance of A anywhere that we may use an instance of B - it will implement all of the ivars of B and all of the methods of B.
This substitutability is important when type checking methods, because the implementation may have stricter type definitions than the interface. The interface specifies minimum requirements, but the implementation may have more accurate ones. For example, a method may privately accept instances of B, but only publish that it accepts instances of A. Any object passed to it will be type checked against B, and so will implicitly by a valid A*. Similarly, a method may return a subclass of the class that it is declared as returning.
This is most important when considering subclassing. A method in a subclass must accept any object as an argument that its superclass's implementation accepts. It may, however, accept a more general type without breaking substitutability (i.e. you can still use the subclass anywhere that you can use the superclass, but not vice versa). The converse requirement applies to return types: the return type for a subclass method must be a valid object of the kind that the superclass advertises, but it may be specified more accurately. This avoids the need for explicit down-casting by callers.
Note: This is a stricter requirement than for assignment.
Definition at line 2136 of file SemaDeclObjC.cpp.
References clang::ASTContext::canAssignObjCInterfaces(), clang::ObjCObjectPointerType::isObjCIdType(), clang::ObjCObjectPointerType::isObjCQualifiedIdType(), and clang::ASTContext::ObjCQualifiedIdTypesAreCompatible().
Referenced by CheckMethodOverrideParam(), and CheckMethodOverrideReturn().
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Definition at line 2987 of file SemaDeclObjC.cpp.
References clang::TypeInfo::Align, clang::ASTContext::getCanonicalType(), clang::Type::getScalarTypeKind(), clang::ASTContext::getTypeInfo(), clang::CanQual< T >::getTypePtr(), clang::CanQual< T >::getUnqualifiedType(), clang::Type::isIncompleteType(), clang::Type::isScalarType(), clang::Sema::MMS_strict, clang::Type::STK_BlockPointer, clang::Type::STK_Bool, clang::Type::STK_CPointer, clang::Type::STK_Integral, clang::Type::STK_ObjCObjectPointer, tryMatchRecordTypes(), and clang::TypeInfo::Width.
Referenced by clang::Sema::MatchTwoMethodDeclarations(), and tryMatchRecordTypes().
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Merge information from the declaration of a method in the @interface (or a category/extension) into the corresponding method in the (for a class or category).
Definition at line 4041 of file SemaDeclObjC.cpp.
References clang::Decl::addAttr(), clang::Sema::Context, clang::SourceRange::getBegin(), clang::Decl::getLocation(), clang::ObjCMethodDecl::getObjCDeclQualifier(), clang::ParmVarDecl::getObjCDeclQualifier(), clang::ObjCMethodDecl::getReturnType(), clang::ObjCMethodDecl::getReturnTypeSourceRange(), clang::ValueDecl::getType(), clang::Decl::hasAttr(), mergeTypeNullabilityForRedecl(), clang::Decl::OBJC_TQ_CSNullability, clang::ObjCMethodDecl::param_begin(), clang::ObjCMethodDecl::param_size(), clang::ObjCMethodDecl::setReturnType(), and clang::ValueDecl::setType().
Referenced by clang::Sema::ActOnMethodDeclaration().
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Merge type nullability from for a redeclaration of the same entity, producing the updated type of the redeclared entity.
Definition at line 4001 of file SemaDeclObjC.cpp.
References clang::Sema::Context, clang::Sema::Diag(), clang::ASTContext::getAttributedType(), clang::Type::getNullability(), clang::AttributedType::getNullabilityAttrKind(), and clang::ast_matchers::type.
Referenced by mergeInterfaceMethodToImpl().
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Definition at line 1167 of file SemaDeclObjC.cpp.
References clang::ObjCProtocolDecl::getDefinition(), clang::ObjCProtocolDecl::hasDefinition(), clang::NamedDecl::isHidden(), and clang::ObjCProtocolDecl::protocols().
Referenced by clang::Sema::actOnObjCTypeArgsOrProtocolQualifiers(), and clang::Sema::FindProtocolDeclaration().
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Determine whether two set of Objective-C declaration qualifiers conflict.
Definition at line 2175 of file SemaDeclObjC.cpp.
References clang::Decl::OBJC_TQ_CSNullability.
Referenced by CheckMethodOverrideParam(), and CheckMethodOverrideReturn().
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Definition at line 3044 of file SemaDeclObjC.cpp.
References clang::TypeInfo::Align, clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::ASTContext::getTypeInfo(), clang::TagDecl::isUnion(), matchTypes(), and clang::TypeInfo::Width.
Referenced by matchTypes().
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Definition at line 2068 of file SemaDeclObjC.cpp.
References clang::AR_Available, clang::AR_Deprecated, clang::AR_NotYetIntroduced, clang::AR_Unavailable, clang::Sema::Diag(), clang::Decl::getAvailability(), clang::ObjCMethodDecl::getLocStart(), and clang::SourceLocation::isValid().
Referenced by CheckProtocolMethodDefs(), and clang::Sema::MatchAllMethodDeclarations().