| //===--- Sema.h - Semantic Analysis & AST Building --------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines the Sema class, which performs semantic analysis and |
| // builds ASTs. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_AST_SEMA_H |
| #define LLVM_CLANG_AST_SEMA_H |
| |
| #include "IdentifierResolver.h" |
| #include "CXXFieldCollector.h" |
| #include "SemaOverload.h" |
| #include "clang/Parse/Action.h" |
| #include "clang/Basic/Diagnostic.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include <vector> |
| |
| namespace llvm { |
| class APSInt; |
| } |
| |
| namespace clang { |
| class ASTContext; |
| class ASTConsumer; |
| class Preprocessor; |
| class Decl; |
| class DeclContext; |
| class DeclSpec; |
| class NamedDecl; |
| class ScopedDecl; |
| class Expr; |
| class InitListExpr; |
| class CallExpr; |
| class VarDecl; |
| class ParmVarDecl; |
| class TypedefDecl; |
| class FunctionDecl; |
| class QualType; |
| struct LangOptions; |
| class Token; |
| class IntegerLiteral; |
| class StringLiteral; |
| class ArrayType; |
| class LabelStmt; |
| class SwitchStmt; |
| class ExtVectorType; |
| class TypedefDecl; |
| class ObjCInterfaceDecl; |
| class ObjCCompatibleAliasDecl; |
| class ObjCProtocolDecl; |
| class ObjCImplementationDecl; |
| class ObjCCategoryImplDecl; |
| class ObjCCategoryDecl; |
| class ObjCIvarDecl; |
| class ObjCMethodDecl; |
| class ObjCPropertyDecl; |
| struct BlockSemaInfo; |
| class BasePaths; |
| |
| /// PragmaPackStack - Simple class to wrap the stack used by #pragma |
| /// pack. |
| class PragmaPackStack { |
| typedef std::vector< std::pair<unsigned, IdentifierInfo*> > stack_ty; |
| |
| /// Alignment - The current user specified alignment. |
| unsigned Alignment; |
| |
| /// Stack - Entries in the #pragma pack stack, consisting of saved |
| /// alignments and optional names. |
| stack_ty Stack; |
| |
| public: |
| PragmaPackStack(unsigned A) : Alignment(A) {} |
| |
| void setAlignment(unsigned A) { Alignment = A; } |
| unsigned getAlignment() { return Alignment; } |
| |
| /// push - Push the current alignment onto the stack, optionally |
| /// using the given \arg Name for the record, if non-zero. |
| void push(IdentifierInfo *Name) { |
| Stack.push_back(std::make_pair(Alignment, Name)); |
| } |
| |
| /// pop - Pop a record from the stack and restore the current |
| /// alignment to the previous value. If \arg Name is non-zero then |
| /// the first such named record is popped, otherwise the top record |
| /// is popped. Returns true if the pop succeeded. |
| bool pop(IdentifierInfo *Name); |
| }; |
| |
| /// Sema - This implements semantic analysis and AST building for C. |
| class Sema : public Action { |
| public: |
| Preprocessor &PP; |
| ASTContext &Context; |
| ASTConsumer &Consumer; |
| Diagnostic &Diags; |
| SourceManager &SourceMgr; |
| |
| /// CurContext - This is the current declaration context of parsing. |
| DeclContext *CurContext; |
| |
| /// PreDeclaratorDC - Keeps the declaration context before switching to the |
| /// context of a declarator's nested-name-specifier. |
| DeclContext *PreDeclaratorDC; |
| |
| /// CurBlock - If inside of a block definition, this contains a pointer to |
| /// the active block object that represents it. |
| BlockSemaInfo *CurBlock; |
| |
| /// PackContext - Manages the stack for #pragma pack. An alignment |
| /// of 0 indicates default alignment. |
| PragmaPackStack PackContext; |
| |
| /// LabelMap - This is a mapping from label identifiers to the LabelStmt for |
| /// it (which acts like the label decl in some ways). Forward referenced |
| /// labels have a LabelStmt created for them with a null location & SubStmt. |
| llvm::DenseMap<IdentifierInfo*, LabelStmt*> LabelMap; |
| |
| llvm::SmallVector<SwitchStmt*, 8> SwitchStack; |
| |
| /// ExtVectorDecls - This is a list all the extended vector types. This allows |
| /// us to associate a raw vector type with one of the ext_vector type names. |
| /// This is only necessary for issuing pretty diagnostics. |
| llvm::SmallVector<TypedefDecl*, 24> ExtVectorDecls; |
| |
| /// ObjCImplementations - Keep track of all class @implementations |
| /// so we can emit errors on duplicates. |
| llvm::DenseMap<IdentifierInfo*, ObjCImplementationDecl*> ObjCImplementations; |
| |
| /// ObjCCategoryImpls - Maintain a list of category implementations so |
| /// we can check for duplicates and find local method declarations. |
| llvm::SmallVector<ObjCCategoryImplDecl*, 8> ObjCCategoryImpls; |
| |
| /// ObjCProtocols - Keep track of all protocol declarations declared |
| /// with @protocol keyword, so that we can emit errors on duplicates and |
| /// find the declarations when needed. |
| llvm::DenseMap<IdentifierInfo*, ObjCProtocolDecl*> ObjCProtocols; |
| |
| /// ObjCInterfaceDecls - Keep track of all class declarations declared |
| /// with @interface, so that we can emit errors on duplicates and |
| /// find the declarations when needed. |
| typedef llvm::DenseMap<const IdentifierInfo*, |
| ObjCInterfaceDecl*> ObjCInterfaceDeclsTy; |
| ObjCInterfaceDeclsTy ObjCInterfaceDecls; |
| |
| /// ObjCAliasDecls - Keep track of all class declarations declared |
| /// with @compatibility_alias, so that we can emit errors on duplicates and |
| /// find the declarations when needed. This construct is ancient and will |
| /// likely never be seen. Nevertheless, it is here for compatibility. |
| typedef llvm::DenseMap<const IdentifierInfo*, |
| ObjCCompatibleAliasDecl*> ObjCAliasTy; |
| ObjCAliasTy ObjCAliasDecls; |
| |
| /// FieldCollector - Collects CXXFieldDecls during parsing of C++ classes. |
| llvm::OwningPtr<CXXFieldCollector> FieldCollector; |
| |
| IdentifierResolver IdResolver; |
| |
| // Enum values used by KnownFunctionIDs (see below). |
| enum { |
| id_NSLog, |
| id_asprintf, |
| id_fprintf, |
| id_printf, |
| id_snprintf, |
| id_snprintf_chk, |
| id_sprintf, |
| id_sprintf_chk, |
| id_vasprintf, |
| id_vfprintf, |
| id_vsnprintf, |
| id_vsnprintf_chk, |
| id_vsprintf, |
| id_vsprintf_chk, |
| id_vprintf, |
| id_num_known_functions |
| }; |
| |
| /// KnownFunctionIDs - This is a list of IdentifierInfo objects to a set |
| /// of known functions used by the semantic analysis to do various |
| /// kinds of checking (e.g. checking format string errors in printf calls). |
| /// This list is populated upon the creation of a Sema object. |
| IdentifierInfo* KnownFunctionIDs[id_num_known_functions]; |
| |
| /// Translation Unit Scope - useful to Objective-C actions that need |
| /// to lookup file scope declarations in the "ordinary" C decl namespace. |
| /// For example, user-defined classes, built-in "id" type, etc. |
| Scope *TUScope; |
| |
| /// The C++ "std" namespace, where the standard library resides. Cached here |
| /// by GetStdNamespace |
| NamespaceDecl *StdNamespace; |
| |
| /// ObjCMethodList - a linked list of methods with different signatures. |
| struct ObjCMethodList { |
| ObjCMethodDecl *Method; |
| ObjCMethodList *Next; |
| |
| ObjCMethodList() { |
| Method = 0; |
| Next = 0; |
| } |
| ObjCMethodList(ObjCMethodDecl *M, ObjCMethodList *C) { |
| Method = M; |
| Next = C; |
| } |
| }; |
| /// Instance/Factory Method Pools - allows efficient lookup when typechecking |
| /// messages to "id". We need to maintain a list, since selectors can have |
| /// differing signatures across classes. In Cocoa, this happens to be |
| /// extremely uncommon (only 1% of selectors are "overloaded"). |
| llvm::DenseMap<Selector, ObjCMethodList> InstanceMethodPool; |
| llvm::DenseMap<Selector, ObjCMethodList> FactoryMethodPool; |
| public: |
| Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer); |
| |
| const LangOptions &getLangOptions() const; |
| Diagnostic &getDiagnostics() const { return Diags; } |
| SourceManager &getSourceManager() const { return SourceMgr; } |
| |
| /// The primitive diagnostic helpers. |
| DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) { |
| return Diags.Report(FullSourceLoc(Loc, SourceMgr), DiagID); |
| } |
| |
| virtual void DeleteExpr(ExprTy *E); |
| virtual void DeleteStmt(StmtTy *S); |
| |
| virtual void ActOnEndOfTranslationUnit(); |
| |
| //===--------------------------------------------------------------------===// |
| // Type Analysis / Processing: SemaType.cpp. |
| // |
| QualType ConvertDeclSpecToType(const DeclSpec &DS); |
| void ProcessTypeAttributeList(QualType &Result, const AttributeList *AL); |
| QualType GetTypeForDeclarator(Declarator &D, Scope *S, |
| bool CXXNewMode = false); |
| DeclarationName GetNameForDeclarator(Declarator &D); |
| |
| QualType ObjCGetTypeForMethodDefinition(DeclTy *D); |
| |
| bool UnwrapSimilarPointerTypes(QualType& T1, QualType& T2); |
| |
| virtual TypeResult ActOnTypeName(Scope *S, Declarator &D, |
| bool CXXNewMode = false); |
| |
| //===--------------------------------------------------------------------===// |
| // Symbol table / Decl tracking callbacks: SemaDecl.cpp. |
| // |
| virtual TypeTy *isTypeName(IdentifierInfo &II, Scope *S, |
| const CXXScopeSpec *SS); |
| virtual DeclTy *ActOnDeclarator(Scope *S, Declarator &D, DeclTy *LastInGroup); |
| virtual DeclTy *ActOnParamDeclarator(Scope *S, Declarator &D); |
| virtual void ActOnParamDefaultArgument(DeclTy *param, |
| SourceLocation EqualLoc, |
| ExprTy *defarg); |
| void AddInitializerToDecl(DeclTy *dcl, ExprTy *init); |
| void ActOnUninitializedDecl(DeclTy *dcl); |
| virtual DeclTy *FinalizeDeclaratorGroup(Scope *S, DeclTy *Group); |
| |
| virtual DeclTy *ActOnStartOfFunctionDef(Scope *S, Declarator &D); |
| virtual DeclTy *ActOnStartOfFunctionDef(Scope *S, DeclTy *D); |
| virtual void ObjCActOnStartOfMethodDef(Scope *S, DeclTy *D); |
| |
| virtual DeclTy *ActOnFinishFunctionBody(DeclTy *Decl, StmtTy *Body); |
| virtual DeclTy *ActOnLinkageSpec(SourceLocation Loc, SourceLocation LBrace, |
| SourceLocation RBrace, const char *Lang, |
| unsigned StrSize, DeclTy *D); |
| virtual DeclTy *ActOnFileScopeAsmDecl(SourceLocation Loc, ExprTy *expr); |
| |
| /// Scope actions. |
| virtual void ActOnPopScope(SourceLocation Loc, Scope *S); |
| virtual void ActOnTranslationUnitScope(SourceLocation Loc, Scope *S); |
| |
| /// ParsedFreeStandingDeclSpec - This method is invoked when a declspec with |
| /// no declarator (e.g. "struct foo;") is parsed. |
| virtual DeclTy *ParsedFreeStandingDeclSpec(Scope *S, DeclSpec &DS); |
| |
| virtual DeclTy *ActOnTag(Scope *S, unsigned TagType, TagKind TK, |
| SourceLocation KWLoc, const CXXScopeSpec &SS, |
| IdentifierInfo *Name, SourceLocation NameLoc, |
| AttributeList *Attr); |
| |
| DeclTy* ActOnTagStruct(Scope *S, TagDecl::TagKind Kind, TagKind TK, |
| SourceLocation KWLoc, const CXXScopeSpec &SS, |
| IdentifierInfo *Name, SourceLocation NameLoc, |
| AttributeList *Attr); |
| |
| virtual void ActOnDefs(Scope *S, SourceLocation DeclStart, |
| IdentifierInfo *ClassName, |
| llvm::SmallVectorImpl<DeclTy*> &Decls); |
| virtual DeclTy *ActOnField(Scope *S, SourceLocation DeclStart, |
| Declarator &D, ExprTy *BitfieldWidth); |
| |
| virtual DeclTy *ActOnIvar(Scope *S, SourceLocation DeclStart, |
| Declarator &D, ExprTy *BitfieldWidth, |
| tok::ObjCKeywordKind visibility); |
| |
| // This is used for both record definitions and ObjC interface declarations. |
| virtual void ActOnFields(Scope* S, |
| SourceLocation RecLoc, DeclTy *TagDecl, |
| DeclTy **Fields, unsigned NumFields, |
| SourceLocation LBrac, SourceLocation RBrac, |
| AttributeList *AttrList); |
| virtual DeclTy *ActOnEnumConstant(Scope *S, DeclTy *EnumDecl, |
| DeclTy *LastEnumConstant, |
| SourceLocation IdLoc, IdentifierInfo *Id, |
| SourceLocation EqualLoc, ExprTy *Val); |
| virtual void ActOnEnumBody(SourceLocation EnumLoc, DeclTy *EnumDecl, |
| DeclTy **Elements, unsigned NumElements); |
| |
| DeclContext *getContainingDC(DeclContext *DC); |
| |
| /// Set the current declaration context until it gets popped. |
| void PushDeclContext(DeclContext *DC); |
| void PopDeclContext(); |
| |
| /// CurFunctionDecl - If inside of a function body, this returns a pointer to |
| /// the function decl for the function being parsed. |
| FunctionDecl *getCurFunctionDecl() { |
| return dyn_cast<FunctionDecl>(CurContext); |
| } |
| |
| /// CurMethodDecl - If inside of a method body, this returns a pointer to |
| /// the method decl for the method being parsed. |
| ObjCMethodDecl *getCurMethodDecl(); |
| |
| /// Add this decl to the scope shadowed decl chains. |
| void PushOnScopeChains(NamedDecl *D, Scope *S); |
| |
| /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true |
| /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns |
| /// true if 'D' belongs to the given declaration context. |
| bool isDeclInScope(Decl *D, DeclContext *Ctx, Scope *S = 0) { |
| return IdResolver.isDeclInScope(D, Ctx, S); |
| } |
| |
| /// Subroutines of ActOnDeclarator(). |
| TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, |
| ScopedDecl *LastDecl); |
| TypedefDecl *MergeTypeDefDecl(TypedefDecl *New, Decl *Old); |
| FunctionDecl *MergeFunctionDecl(FunctionDecl *New, Decl *Old, |
| bool &Redeclaration); |
| VarDecl *MergeVarDecl(VarDecl *New, Decl *Old); |
| FunctionDecl *MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old); |
| void CheckForFileScopedRedefinitions(Scope *S, VarDecl *VD); |
| |
| /// C++ Overloading. |
| bool IsOverload(FunctionDecl *New, Decl* OldD, |
| OverloadedFunctionDecl::function_iterator &MatchedDecl); |
| ImplicitConversionSequence |
| TryImplicitConversion(Expr* From, QualType ToType, |
| bool SuppressUserConversions = false); |
| bool IsStandardConversion(Expr *From, QualType ToType, |
| StandardConversionSequence& SCS); |
| bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType); |
| bool IsFloatingPointPromotion(QualType FromType, QualType ToType); |
| bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType, |
| QualType& ConvertedType); |
| bool CheckPointerConversion(Expr *From, QualType ToType); |
| bool IsQualificationConversion(QualType FromType, QualType ToType); |
| bool IsUserDefinedConversion(Expr *From, QualType ToType, |
| UserDefinedConversionSequence& User); |
| |
| ImplicitConversionSequence::CompareKind |
| CompareImplicitConversionSequences(const ImplicitConversionSequence& ICS1, |
| const ImplicitConversionSequence& ICS2); |
| |
| ImplicitConversionSequence::CompareKind |
| CompareStandardConversionSequences(const StandardConversionSequence& SCS1, |
| const StandardConversionSequence& SCS2); |
| |
| ImplicitConversionSequence::CompareKind |
| CompareQualificationConversions(const StandardConversionSequence& SCS1, |
| const StandardConversionSequence& SCS2); |
| |
| ImplicitConversionSequence::CompareKind |
| CompareDerivedToBaseConversions(const StandardConversionSequence& SCS1, |
| const StandardConversionSequence& SCS2); |
| |
| ImplicitConversionSequence |
| TryCopyInitialization(Expr* From, QualType ToType, |
| bool SuppressUserConversions = false); |
| bool PerformCopyInitialization(Expr *&From, QualType ToType, |
| const char *Flavor); |
| |
| ImplicitConversionSequence |
| TryObjectArgumentInitialization(Expr *From, CXXMethodDecl *Method); |
| bool PerformObjectArgumentInitialization(Expr *&From, CXXMethodDecl *Method); |
| |
| /// OverloadingResult - Capture the result of performing overload |
| /// resolution. |
| enum OverloadingResult { |
| OR_Success, ///< Overload resolution succeeded. |
| OR_No_Viable_Function, ///< No viable function found. |
| OR_Ambiguous ///< Ambiguous candidates found. |
| }; |
| |
| void AddOverloadCandidate(FunctionDecl *Function, |
| Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet, |
| bool SuppressUserConversions = false); |
| void AddMethodCandidate(CXXMethodDecl *Method, |
| Expr *Object, Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet, |
| bool SuppressUserConversions = true); |
| void AddConversionCandidate(CXXConversionDecl *Conversion, |
| Expr *From, QualType ToType, |
| OverloadCandidateSet& CandidateSet); |
| void AddSurrogateCandidate(CXXConversionDecl *Conversion, |
| const FunctionTypeProto *Proto, |
| Expr *Object, Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet); |
| void AddOperatorCandidates(OverloadedOperatorKind Op, Scope *S, |
| Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet); |
| void AddBuiltinCandidate(QualType ResultTy, QualType *ParamTys, |
| Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet); |
| void AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, |
| Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet); |
| void AddOverloadCandidates(const OverloadedFunctionDecl *Ovl, |
| Expr **Args, unsigned NumArgs, |
| OverloadCandidateSet& CandidateSet, |
| bool SuppressUserConversions = false); |
| bool isBetterOverloadCandidate(const OverloadCandidate& Cand1, |
| const OverloadCandidate& Cand2); |
| OverloadingResult BestViableFunction(OverloadCandidateSet& CandidateSet, |
| OverloadCandidateSet::iterator& Best); |
| void PrintOverloadCandidates(OverloadCandidateSet& CandidateSet, |
| bool OnlyViable); |
| |
| FunctionDecl *ResolveAddressOfOverloadedFunction(Expr *From, QualType ToType, |
| bool Complain); |
| void FixOverloadedFunctionReference(Expr *E, FunctionDecl *Fn); |
| |
| ExprResult |
| BuildCallToObjectOfClassType(Expr *Object, SourceLocation LParenLoc, |
| Expr **Args, unsigned NumArgs, |
| SourceLocation *CommaLocs, |
| SourceLocation RParenLoc); |
| |
| ExprResult BuildOverloadedArrowExpr(Expr *Base, SourceLocation OpLoc, |
| SourceLocation MemberLoc, |
| IdentifierInfo &Member); |
| |
| /// Helpers for dealing with function parameters |
| bool CheckParmsForFunctionDef(FunctionDecl *FD); |
| void CheckCXXDefaultArguments(FunctionDecl *FD); |
| void CheckExtraCXXDefaultArguments(Declarator &D); |
| |
| /// More parsing and symbol table subroutines... |
| Decl *LookupDecl(DeclarationName Name, unsigned NSI, Scope *S, |
| const DeclContext *LookupCtx = 0, |
| bool enableLazyBuiltinCreation = true); |
| ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *Id); |
| ScopedDecl *LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, |
| Scope *S); |
| ScopedDecl *ImplicitlyDefineFunction(SourceLocation Loc, IdentifierInfo &II, |
| Scope *S); |
| // Decl attributes - this routine is the top level dispatcher. |
| void ProcessDeclAttributes(Decl *D, const Declarator &PD); |
| void ProcessDeclAttributeList(Decl *D, const AttributeList *AttrList); |
| |
| void WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method, |
| bool &IncompleteImpl); |
| |
| NamespaceDecl *GetStdNamespace(); |
| |
| /// CheckProtocolMethodDefs - This routine checks unimpletented |
| /// methods declared in protocol, and those referenced by it. |
| /// \param IDecl - Used for checking for methods which may have been |
| /// inherited. |
| void CheckProtocolMethodDefs(SourceLocation ImpLoc, |
| ObjCProtocolDecl *PDecl, |
| bool& IncompleteImpl, |
| const llvm::DenseSet<Selector> &InsMap, |
| const llvm::DenseSet<Selector> &ClsMap, |
| ObjCInterfaceDecl *IDecl); |
| |
| /// CheckImplementationIvars - This routine checks if the instance variables |
| /// listed in the implelementation match those listed in the interface. |
| void CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, |
| ObjCIvarDecl **Fields, unsigned nIvars, |
| SourceLocation Loc); |
| |
| /// ImplMethodsVsClassMethods - This is main routine to warn if any method |
| /// remains unimplemented in the @implementation class. |
| void ImplMethodsVsClassMethods(ObjCImplementationDecl* IMPDecl, |
| ObjCInterfaceDecl* IDecl); |
| |
| /// ImplCategoryMethodsVsIntfMethods - Checks that methods declared in the |
| /// category interface is implemented in the category @implementation. |
| void ImplCategoryMethodsVsIntfMethods(ObjCCategoryImplDecl *CatImplDecl, |
| ObjCCategoryDecl *CatClassDecl); |
| /// MatchTwoMethodDeclarations - Checks if two methods' type match and returns |
| /// true, or false, accordingly. |
| bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, |
| const ObjCMethodDecl *PrevMethod, |
| bool matchBasedOnSizeAndAlignment = false); |
| |
| /// AddInstanceMethodToGlobalPool - All instance methods in a translation |
| /// unit are added to a global pool. This allows us to efficiently associate |
| /// a selector with a method declaraation for purposes of typechecking |
| /// messages sent to "id" (where the class of the object is unknown). |
| void AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method); |
| |
| /// LookupInstanceMethodInGlobalPool - Returns the method and warns if |
| /// there are multiple signatures. |
| ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R); |
| |
| /// AddFactoryMethodToGlobalPool - Same as above, but for factory methods. |
| void AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method); |
| //===--------------------------------------------------------------------===// |
| // Statement Parsing Callbacks: SemaStmt.cpp. |
| public: |
| virtual StmtResult ActOnExprStmt(ExprTy *Expr); |
| |
| virtual StmtResult ActOnNullStmt(SourceLocation SemiLoc); |
| virtual StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R, |
| StmtTy **Elts, unsigned NumElts, |
| bool isStmtExpr); |
| virtual StmtResult ActOnDeclStmt(DeclTy *Decl, SourceLocation StartLoc, |
| SourceLocation EndLoc); |
| virtual StmtResult ActOnCaseStmt(SourceLocation CaseLoc, ExprTy *LHSVal, |
| SourceLocation DotDotDotLoc, ExprTy *RHSVal, |
| SourceLocation ColonLoc, StmtTy *SubStmt); |
| virtual StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc, |
| SourceLocation ColonLoc, StmtTy *SubStmt, |
| Scope *CurScope); |
| virtual StmtResult ActOnLabelStmt(SourceLocation IdentLoc, IdentifierInfo *II, |
| SourceLocation ColonLoc, StmtTy *SubStmt); |
| virtual StmtResult ActOnIfStmt(SourceLocation IfLoc, ExprTy *CondVal, |
| StmtTy *ThenVal, SourceLocation ElseLoc, |
| StmtTy *ElseVal); |
| virtual StmtResult ActOnStartOfSwitchStmt(ExprTy *Cond); |
| virtual StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc, |
| StmtTy *Switch, ExprTy *Body); |
| virtual StmtResult ActOnWhileStmt(SourceLocation WhileLoc, ExprTy *Cond, |
| StmtTy *Body); |
| virtual StmtResult ActOnDoStmt(SourceLocation DoLoc, StmtTy *Body, |
| SourceLocation WhileLoc, ExprTy *Cond); |
| |
| virtual StmtResult ActOnForStmt(SourceLocation ForLoc, |
| SourceLocation LParenLoc, |
| StmtTy *First, ExprTy *Second, ExprTy *Third, |
| SourceLocation RParenLoc, StmtTy *Body); |
| virtual StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc, |
| SourceLocation LParenLoc, |
| StmtTy *First, ExprTy *Second, |
| SourceLocation RParenLoc, StmtTy *Body); |
| |
| virtual StmtResult ActOnGotoStmt(SourceLocation GotoLoc, |
| SourceLocation LabelLoc, |
| IdentifierInfo *LabelII); |
| virtual StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc, |
| SourceLocation StarLoc, |
| ExprTy *DestExp); |
| virtual StmtResult ActOnContinueStmt(SourceLocation ContinueLoc, |
| Scope *CurScope); |
| virtual StmtResult ActOnBreakStmt(SourceLocation GotoLoc, Scope *CurScope); |
| |
| virtual StmtResult ActOnReturnStmt(SourceLocation ReturnLoc, |
| ExprTy *RetValExp); |
| StmtResult ActOnBlockReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
| |
| virtual StmtResult ActOnAsmStmt(SourceLocation AsmLoc, |
| bool IsSimple, |
| bool IsVolatile, |
| unsigned NumOutputs, |
| unsigned NumInputs, |
| std::string *Names, |
| ExprTy **Constraints, |
| ExprTy **Exprs, |
| ExprTy *AsmString, |
| unsigned NumClobbers, |
| ExprTy **Clobbers, |
| SourceLocation RParenLoc); |
| |
| virtual StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc, |
| SourceLocation RParen, StmtTy *Parm, |
| StmtTy *Body, StmtTy *CatchList); |
| |
| virtual StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc, |
| StmtTy *Body); |
| |
| virtual StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc, |
| StmtTy *Try, |
| StmtTy *Catch, StmtTy *Finally); |
| |
| virtual StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc, |
| StmtTy *Throw); |
| virtual StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc, |
| ExprTy *SynchExpr, |
| StmtTy *SynchBody); |
| |
| //===--------------------------------------------------------------------===// |
| // Expression Parsing Callbacks: SemaExpr.cpp. |
| |
| // Primary Expressions. |
| virtual ExprResult ActOnIdentifierExpr(Scope *S, SourceLocation Loc, |
| IdentifierInfo &II, |
| bool HasTrailingLParen, |
| const CXXScopeSpec *SS = 0); |
| virtual ExprResult ActOnCXXOperatorFunctionIdExpr(Scope *S, |
| SourceLocation OperatorLoc, |
| OverloadedOperatorKind Op, |
| bool HasTrailingLParen, |
| const CXXScopeSpec &SS); |
| virtual ExprResult ActOnCXXConversionFunctionExpr(Scope *S, |
| SourceLocation OperatorLoc, |
| TypeTy *Ty, |
| bool HasTrailingLParen, |
| const CXXScopeSpec &SS); |
| ExprResult ActOnDeclarationNameExpr(Scope *S, SourceLocation Loc, |
| DeclarationName Name, |
| bool HasTrailingLParen, |
| const CXXScopeSpec *SS); |
| |
| |
| virtual ExprResult ActOnPredefinedExpr(SourceLocation Loc, |
| tok::TokenKind Kind); |
| virtual ExprResult ActOnNumericConstant(const Token &); |
| virtual ExprResult ActOnCharacterConstant(const Token &); |
| virtual ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R, |
| ExprTy *Val); |
| |
| /// ActOnStringLiteral - The specified tokens were lexed as pasted string |
| /// fragments (e.g. "foo" "bar" L"baz"). |
| virtual ExprResult ActOnStringLiteral(const Token *Toks, unsigned NumToks); |
| |
| // Binary/Unary Operators. 'Tok' is the token for the operator. |
| virtual ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc, |
| tok::TokenKind Op, ExprTy *Input); |
| virtual ExprResult |
| ActOnSizeOfAlignOfExpr(SourceLocation OpLoc, bool isSizeof, bool isType, |
| void *TyOrEx, const SourceRange &ArgRange); |
| |
| bool CheckSizeOfAlignOfOperand(QualType type, SourceLocation OpLoc, |
| const SourceRange &R, bool isSizeof); |
| |
| virtual ExprResult ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, |
| tok::TokenKind Kind, ExprTy *Input); |
| |
| virtual ExprResult ActOnArraySubscriptExpr(Scope *S, ExprTy *Base, |
| SourceLocation LLoc, ExprTy *Idx, |
| SourceLocation RLoc); |
| virtual ExprResult ActOnMemberReferenceExpr(ExprTy *Base,SourceLocation OpLoc, |
| tok::TokenKind OpKind, |
| SourceLocation MemberLoc, |
| IdentifierInfo &Member); |
| |
| /// ActOnCallExpr - Handle a call to Fn with the specified array of arguments. |
| /// This provides the location of the left/right parens and a list of comma |
| /// locations. |
| virtual ExprResult ActOnCallExpr(ExprTy *Fn, SourceLocation LParenLoc, |
| ExprTy **Args, unsigned NumArgs, |
| SourceLocation *CommaLocs, |
| SourceLocation RParenLoc); |
| |
| virtual ExprResult ActOnCastExpr(SourceLocation LParenLoc, TypeTy *Ty, |
| SourceLocation RParenLoc, ExprTy *Op); |
| |
| virtual ExprResult ActOnCompoundLiteral(SourceLocation LParenLoc, TypeTy *Ty, |
| SourceLocation RParenLoc, ExprTy *Op); |
| |
| virtual ExprResult ActOnInitList(SourceLocation LParenLoc, |
| ExprTy **InitList, unsigned NumInit, |
| InitListDesignations &Designators, |
| SourceLocation RParenLoc); |
| |
| virtual ExprResult ActOnBinOp(Scope *S, SourceLocation TokLoc, |
| tok::TokenKind Kind, |
| ExprTy *LHS,ExprTy *RHS); |
| ExprResult CreateBuiltinBinOp(SourceLocation TokLoc, |
| unsigned Opc, |
| Expr *lhs, Expr *rhs); |
| |
| /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null |
| /// in the case of a the GNU conditional expr extension. |
| virtual ExprResult ActOnConditionalOp(SourceLocation QuestionLoc, |
| SourceLocation ColonLoc, |
| ExprTy *Cond, ExprTy *LHS, ExprTy *RHS); |
| |
| /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". |
| virtual ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, |
| IdentifierInfo *LabelII); |
| |
| virtual ExprResult ActOnStmtExpr(SourceLocation LPLoc, StmtTy *SubStmt, |
| SourceLocation RPLoc); // "({..})" |
| |
| /// __builtin_offsetof(type, a.b[123][456].c) |
| virtual ExprResult ActOnBuiltinOffsetOf(SourceLocation BuiltinLoc, |
| SourceLocation TypeLoc, TypeTy *Arg1, |
| OffsetOfComponent *CompPtr, |
| unsigned NumComponents, |
| SourceLocation RParenLoc); |
| |
| // __builtin_types_compatible_p(type1, type2) |
| virtual ExprResult ActOnTypesCompatibleExpr(SourceLocation BuiltinLoc, |
| TypeTy *arg1, TypeTy *arg2, |
| SourceLocation RPLoc); |
| |
| // __builtin_choose_expr(constExpr, expr1, expr2) |
| virtual ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc, |
| ExprTy *cond, ExprTy *expr1, ExprTy *expr2, |
| SourceLocation RPLoc); |
| |
| // __builtin_overload(...) |
| virtual ExprResult ActOnOverloadExpr(ExprTy **Args, unsigned NumArgs, |
| SourceLocation *CommaLocs, |
| SourceLocation BuiltinLoc, |
| SourceLocation RParenLoc); |
| |
| // __builtin_va_arg(expr, type) |
| virtual ExprResult ActOnVAArg(SourceLocation BuiltinLoc, |
| ExprTy *expr, TypeTy *type, |
| SourceLocation RPLoc); |
| |
| //===------------------------- "Block" Extension ------------------------===// |
| |
| /// ActOnBlockStart - This callback is invoked when a block literal is |
| /// started. |
| virtual void ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope); |
| |
| /// ActOnBlockArguments - This callback allows processing of block arguments. |
| /// If there are no arguments, this is still invoked. |
| virtual void ActOnBlockArguments(Declarator &ParamInfo); |
| |
| /// ActOnBlockError - If there is an error parsing a block, this callback |
| /// is invoked to pop the information about the block from the action impl. |
| virtual void ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope); |
| |
| /// ActOnBlockStmtExpr - This is called when the body of a block statement |
| /// literal was successfully completed. ^(int x){...} |
| virtual ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, StmtTy *Body, |
| Scope *CurScope); |
| |
| // Act on C++ namespaces |
| virtual DeclTy *ActOnStartNamespaceDef(Scope *S, SourceLocation IdentLoc, |
| IdentifierInfo *Ident, |
| SourceLocation LBrace); |
| virtual void ActOnFinishNamespaceDef(DeclTy *Dcl, SourceLocation RBrace); |
| |
| /// AddCXXDirectInitializerToDecl - This action is called immediately after |
| /// ActOnDeclarator, when a C++ direct initializer is present. |
| /// e.g: "int x(1);" |
| virtual void AddCXXDirectInitializerToDecl(DeclTy *Dcl, |
| SourceLocation LParenLoc, |
| ExprTy **Exprs, unsigned NumExprs, |
| SourceLocation *CommaLocs, |
| SourceLocation RParenLoc); |
| |
| /// InitializationKind - Represents which kind of C++ initialization |
| /// [dcl.init] a routine is to perform. |
| enum InitializationKind { |
| IK_Direct, ///< Direct initialization |
| IK_Copy, ///< Copy initialization |
| IK_Default ///< Default initialization |
| }; |
| |
| CXXConstructorDecl * |
| PerformInitializationByConstructor(QualType ClassType, |
| Expr **Args, unsigned NumArgs, |
| SourceLocation Loc, SourceRange Range, |
| std::string InitEntity, |
| InitializationKind Kind); |
| |
| /// ActOnCXXNamedCast - Parse {dynamic,static,reinterpret,const}_cast's. |
| virtual ExprResult ActOnCXXNamedCast(SourceLocation OpLoc, tok::TokenKind Kind, |
| SourceLocation LAngleBracketLoc, TypeTy *Ty, |
| SourceLocation RAngleBracketLoc, |
| SourceLocation LParenLoc, ExprTy *E, |
| SourceLocation RParenLoc); |
| |
| /// ActOnCXXTypeidOfType - Parse typeid( type-id ). |
| virtual ExprResult ActOnCXXTypeid(SourceLocation OpLoc, |
| SourceLocation LParenLoc, bool isType, |
| void *TyOrExpr, SourceLocation RParenLoc); |
| |
| //// ActOnCXXThis - Parse 'this' pointer. |
| virtual ExprResult ActOnCXXThis(SourceLocation ThisLoc); |
| |
| /// ActOnCXXBoolLiteral - Parse {true,false} literals. |
| virtual ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, |
| tok::TokenKind Kind); |
| |
| //// ActOnCXXThrow - Parse throw expressions. |
| virtual ExprResult ActOnCXXThrow(SourceLocation OpLoc, |
| ExprTy *expr); |
| |
| /// ActOnCXXTypeConstructExpr - Parse construction of a specified type. |
| /// Can be interpreted either as function-style casting ("int(x)") |
| /// or class type construction ("ClassType(x,y,z)") |
| /// or creation of a value-initialized type ("int()"). |
| virtual ExprResult ActOnCXXTypeConstructExpr(SourceRange TypeRange, |
| TypeTy *TypeRep, |
| SourceLocation LParenLoc, |
| ExprTy **Exprs, |
| unsigned NumExprs, |
| SourceLocation *CommaLocs, |
| SourceLocation RParenLoc); |
| |
| /// ActOnCXXNew - Parsed a C++ 'new' expression. |
| virtual ExprResult ActOnCXXNew(SourceLocation StartLoc, bool UseGlobal, |
| SourceLocation PlacementLParen, |
| ExprTy **PlacementArgs, unsigned NumPlaceArgs, |
| SourceLocation PlacementRParen, |
| bool ParenTypeId, SourceLocation TyStart, |
| TypeTy *Ty, SourceLocation TyEnd, |
| SourceLocation ConstructorLParen, |
| ExprTy **ConstructorArgs, unsigned NumConsArgs, |
| SourceLocation ConstructorRParen); |
| bool CheckAllocatedType(QualType AllocType, SourceLocation StartLoc, |
| const SourceRange &TyR); |
| |
| /// ActOnCXXDelete - Parsed a C++ 'delete' expression |
| virtual ExprResult ActOnCXXDelete(SourceLocation StartLoc, bool UseGlobal, |
| bool ArrayForm, ExprTy *Operand); |
| |
| /// ActOnCXXConditionDeclarationExpr - Parsed a condition declaration of a |
| /// C++ if/switch/while/for statement. |
| /// e.g: "if (int x = f()) {...}" |
| virtual ExprResult ActOnCXXConditionDeclarationExpr(Scope *S, |
| SourceLocation StartLoc, |
| Declarator &D, |
| SourceLocation EqualLoc, |
| ExprTy *AssignExprVal); |
| |
| /// ActOnCXXGlobalScopeSpecifier - Return the object that represents the |
| /// global scope ('::'). |
| virtual CXXScopeTy *ActOnCXXGlobalScopeSpecifier(Scope *S, |
| SourceLocation CCLoc); |
| |
| /// ActOnCXXNestedNameSpecifier - Called during parsing of a |
| /// nested-name-specifier. e.g. for "foo::bar::" we parsed "foo::" and now |
| /// we want to resolve "bar::". 'SS' is empty or the previously parsed |
| /// nested-name part ("foo::"), 'IdLoc' is the source location of 'bar', |
| /// 'CCLoc' is the location of '::' and 'II' is the identifier for 'bar'. |
| /// Returns a CXXScopeTy* object representing the C++ scope. |
| virtual CXXScopeTy *ActOnCXXNestedNameSpecifier(Scope *S, |
| const CXXScopeSpec &SS, |
| SourceLocation IdLoc, |
| SourceLocation CCLoc, |
| IdentifierInfo &II); |
| |
| /// ActOnCXXEnterDeclaratorScope - Called when a C++ scope specifier (global |
| /// scope or nested-name-specifier) is parsed, part of a declarator-id. |
| /// After this method is called, according to [C++ 3.4.3p3], names should be |
| /// looked up in the declarator-id's scope, until the declarator is parsed and |
| /// ActOnCXXExitDeclaratorScope is called. |
| /// The 'SS' should be a non-empty valid CXXScopeSpec. |
| virtual void ActOnCXXEnterDeclaratorScope(Scope *S, const CXXScopeSpec &SS); |
| |
| /// ActOnCXXExitDeclaratorScope - Called when a declarator that previously |
| /// invoked ActOnCXXEnterDeclaratorScope(), is finished. 'SS' is the same |
| /// CXXScopeSpec that was passed to ActOnCXXEnterDeclaratorScope as well. |
| /// Used to indicate that names should revert to being looked up in the |
| /// defining scope. |
| virtual void ActOnCXXExitDeclaratorScope(const CXXScopeSpec &SS); |
| |
| // ParseObjCStringLiteral - Parse Objective-C string literals. |
| virtual ExprResult ParseObjCStringLiteral(SourceLocation *AtLocs, |
| ExprTy **Strings, |
| unsigned NumStrings); |
| virtual ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc, |
| SourceLocation EncodeLoc, |
| SourceLocation LParenLoc, |
| TypeTy *Ty, |
| SourceLocation RParenLoc); |
| |
| // ParseObjCSelectorExpression - Build selector expression for @selector |
| virtual ExprResult ParseObjCSelectorExpression(Selector Sel, |
| SourceLocation AtLoc, |
| SourceLocation SelLoc, |
| SourceLocation LParenLoc, |
| SourceLocation RParenLoc); |
| |
| // ParseObjCProtocolExpression - Build protocol expression for @protocol |
| virtual ExprResult ParseObjCProtocolExpression(IdentifierInfo * ProtocolName, |
| SourceLocation AtLoc, |
| SourceLocation ProtoLoc, |
| SourceLocation LParenLoc, |
| SourceLocation RParenLoc); |
| |
| //===--------------------------------------------------------------------===// |
| // C++ Classes |
| // |
| virtual bool isCurrentClassName(const IdentifierInfo &II, Scope *S, |
| const CXXScopeSpec *SS); |
| |
| virtual void ActOnStartCXXClassDef(Scope *S, DeclTy *TagDecl, |
| SourceLocation LBrace); |
| |
| virtual DeclTy *ActOnCXXMemberDeclarator(Scope *S, AccessSpecifier AS, |
| Declarator &D, ExprTy *BitfieldWidth, |
| ExprTy *Init, DeclTy *LastInGroup); |
| |
| virtual MemInitResult ActOnMemInitializer(DeclTy *ConstructorD, |
| Scope *S, |
| IdentifierInfo *MemberOrBase, |
| SourceLocation IdLoc, |
| SourceLocation LParenLoc, |
| ExprTy **Args, unsigned NumArgs, |
| SourceLocation *CommaLocs, |
| SourceLocation RParenLoc); |
| |
| void AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl); |
| |
| virtual void ActOnFinishCXXMemberSpecification(Scope* S, SourceLocation RLoc, |
| DeclTy *TagDecl, |
| SourceLocation LBrac, |
| SourceLocation RBrac); |
| |
| virtual void ActOnFinishCXXClassDef(DeclTy *TagDecl); |
| |
| |
| bool CheckConstructorDeclarator(Declarator &D, QualType &R, |
| FunctionDecl::StorageClass& SC); |
| bool CheckDestructorDeclarator(Declarator &D, QualType &R, |
| FunctionDecl::StorageClass& SC); |
| bool CheckConversionDeclarator(Declarator &D, QualType &R, |
| FunctionDecl::StorageClass& SC); |
| DeclTy *ActOnConstructorDeclarator(CXXConstructorDecl *Constructor); |
| DeclTy *ActOnDestructorDeclarator(CXXDestructorDecl *Destructor); |
| DeclTy *ActOnConversionDeclarator(CXXConversionDecl *Conversion); |
| |
| //===--------------------------------------------------------------------===// |
| // C++ Derived Classes |
| // |
| |
| /// ActOnBaseSpecifier - Parsed a base specifier |
| virtual BaseResult ActOnBaseSpecifier(DeclTy *classdecl, |
| SourceRange SpecifierRange, |
| bool Virtual, AccessSpecifier Access, |
| TypeTy *basetype, SourceLocation BaseLoc); |
| |
| virtual void ActOnBaseSpecifiers(DeclTy *ClassDecl, BaseTy **Bases, |
| unsigned NumBases); |
| |
| bool IsDerivedFrom(QualType Derived, QualType Base); |
| bool IsDerivedFrom(QualType Derived, QualType Base, BasePaths &Paths); |
| |
| bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, |
| SourceLocation Loc, SourceRange Range); |
| |
| //===--------------------------------------------------------------------===// |
| // C++ Overloaded Operators [C++ 13.5] |
| // |
| |
| bool CheckOverloadedOperatorDeclaration(FunctionDecl *FnDecl); |
| |
| // Objective-C declarations. |
| virtual DeclTy *ActOnStartClassInterface(SourceLocation AtInterfaceLoc, |
| IdentifierInfo *ClassName, |
| SourceLocation ClassLoc, |
| IdentifierInfo *SuperName, |
| SourceLocation SuperLoc, |
| DeclTy * const *ProtoRefs, |
| unsigned NumProtoRefs, |
| SourceLocation EndProtoLoc, |
| AttributeList *AttrList); |
| |
| virtual DeclTy *ActOnCompatiblityAlias( |
| SourceLocation AtCompatibilityAliasLoc, |
| IdentifierInfo *AliasName, SourceLocation AliasLocation, |
| IdentifierInfo *ClassName, SourceLocation ClassLocation); |
| |
| virtual DeclTy *ActOnStartProtocolInterface( |
| SourceLocation AtProtoInterfaceLoc, |
| IdentifierInfo *ProtocolName, SourceLocation ProtocolLoc, |
| DeclTy * const *ProtoRefNames, unsigned NumProtoRefs, |
| SourceLocation EndProtoLoc, |
| AttributeList *AttrList); |
| |
| virtual DeclTy *ActOnStartCategoryInterface(SourceLocation AtInterfaceLoc, |
| IdentifierInfo *ClassName, |
| SourceLocation ClassLoc, |
| IdentifierInfo *CategoryName, |
| SourceLocation CategoryLoc, |
| DeclTy * const *ProtoRefs, |
| unsigned NumProtoRefs, |
| SourceLocation EndProtoLoc); |
| |
| virtual DeclTy *ActOnStartClassImplementation( |
| SourceLocation AtClassImplLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *SuperClassname, |
| SourceLocation SuperClassLoc); |
| |
| virtual DeclTy *ActOnStartCategoryImplementation( |
| SourceLocation AtCatImplLoc, |
| IdentifierInfo *ClassName, |
| SourceLocation ClassLoc, |
| IdentifierInfo *CatName, |
| SourceLocation CatLoc); |
| |
| virtual DeclTy *ActOnForwardClassDeclaration(SourceLocation Loc, |
| IdentifierInfo **IdentList, |
| unsigned NumElts); |
| |
| virtual DeclTy *ActOnForwardProtocolDeclaration(SourceLocation AtProtocolLoc, |
| const IdentifierLocPair *IdentList, |
| unsigned NumElts); |
| |
| virtual void FindProtocolDeclaration(bool WarnOnDeclarations, |
| const IdentifierLocPair *ProtocolId, |
| unsigned NumProtocols, |
| llvm::SmallVectorImpl<DeclTy *> &Protocols); |
| |
| /// Ensure attributes are consistent with type. |
| /// \param [in, out] Attributes The attributes to check; they will |
| /// be modified to be consistent with \arg PropertyTy. |
| void CheckObjCPropertyAttributes(QualType PropertyTy, |
| SourceLocation Loc, |
| unsigned &Attributes); |
| void DiagnosePropertyMismatch(ObjCPropertyDecl *Property, |
| ObjCPropertyDecl *SuperProperty, |
| const IdentifierInfo *Name); |
| void ComparePropertiesInBaseAndSuper(ObjCInterfaceDecl *IDecl); |
| |
| void MergeProtocolPropertiesIntoClass(ObjCInterfaceDecl *IDecl, |
| DeclTy *MergeProtocols); |
| |
| void MergeOneProtocolPropertiesIntoClass(ObjCInterfaceDecl *IDecl, |
| ObjCProtocolDecl *PDecl); |
| |
| virtual void ActOnAtEnd(SourceLocation AtEndLoc, DeclTy *classDecl, |
| DeclTy **allMethods = 0, unsigned allNum = 0, |
| DeclTy **allProperties = 0, unsigned pNum = 0); |
| |
| virtual DeclTy *ActOnProperty(Scope *S, SourceLocation AtLoc, |
| FieldDeclarator &FD, ObjCDeclSpec &ODS, |
| Selector GetterSel, Selector SetterSel, |
| tok::ObjCKeywordKind MethodImplKind); |
| |
| virtual DeclTy *ActOnPropertyImplDecl(SourceLocation AtLoc, |
| SourceLocation PropertyLoc, |
| bool ImplKind, DeclTy *ClassImplDecl, |
| IdentifierInfo *PropertyId, |
| IdentifierInfo *PropertyIvar); |
| |
| virtual DeclTy *ActOnMethodDeclaration( |
| SourceLocation BeginLoc, // location of the + or -. |
| SourceLocation EndLoc, // location of the ; or {. |
| tok::TokenKind MethodType, |
| DeclTy *ClassDecl, ObjCDeclSpec &ReturnQT, TypeTy *ReturnType, |
| Selector Sel, |
| // optional arguments. The number of types/arguments is obtained |
| // from the Sel.getNumArgs(). |
| ObjCDeclSpec *ArgQT, TypeTy **ArgTypes, IdentifierInfo **ArgNames, |
| AttributeList *AttrList, tok::ObjCKeywordKind MethodImplKind, |
| bool isVariadic = false); |
| |
| // ActOnClassMessage - used for both unary and keyword messages. |
| // ArgExprs is optional - if it is present, the number of expressions |
| // is obtained from NumArgs. |
| virtual ExprResult ActOnClassMessage( |
| Scope *S, |
| IdentifierInfo *receivingClassName, Selector Sel, |
| SourceLocation lbrac, SourceLocation receiverLoc, SourceLocation rbrac, |
| ExprTy **ArgExprs, unsigned NumArgs); |
| |
| // ActOnInstanceMessage - used for both unary and keyword messages. |
| // ArgExprs is optional - if it is present, the number of expressions |
| // is obtained from NumArgs. |
| virtual ExprResult ActOnInstanceMessage( |
| ExprTy *receiver, Selector Sel, |
| SourceLocation lbrac, SourceLocation rbrac, |
| ExprTy **ArgExprs, unsigned NumArgs); |
| |
| /// ActOnPragmaPack - Called on well formed #pragma pack(...). |
| virtual void ActOnPragmaPack(PragmaPackKind Kind, |
| IdentifierInfo *Name, |
| ExprTy *Alignment, |
| SourceLocation PragmaLoc, |
| SourceLocation LParenLoc, |
| SourceLocation RParenLoc); |
| |
| /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit |
| /// cast. If there is already an implicit cast, merge into the existing one. |
| /// If isLvalue, the result of the cast is an lvalue. |
| void ImpCastExprToType(Expr *&Expr, QualType Type, bool isLvalue = false); |
| |
| // UsualUnaryConversions - promotes integers (C99 6.3.1.1p2) and converts |
| // functions and arrays to their respective pointers (C99 6.3.2.1). |
| Expr *UsualUnaryConversions(Expr *&expr); |
| |
| // DefaultFunctionArrayConversion - converts functions and arrays |
| // to their respective pointers (C99 6.3.2.1). |
| void DefaultFunctionArrayConversion(Expr *&expr); |
| |
| // DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that |
| // do not have a prototype. Integer promotions are performed on each |
| // argument, and arguments that have type float are promoted to double. |
| void DefaultArgumentPromotion(Expr *&Expr); |
| |
| // UsualArithmeticConversions - performs the UsualUnaryConversions on it's |
| // operands and then handles various conversions that are common to binary |
| // operators (C99 6.3.1.8). If both operands aren't arithmetic, this |
| // routine returns the first non-arithmetic type found. The client is |
| // responsible for emitting appropriate error diagnostics. |
| QualType UsualArithmeticConversions(Expr *&lExpr, Expr *&rExpr, |
| bool isCompAssign = false); |
| |
| /// UsualArithmeticConversionsType - handles the various conversions |
| /// that are common to binary operators (C99 6.3.1.8, C++ [expr]p9) |
| /// and returns the result type of that conversion. |
| QualType UsualArithmeticConversionsType(QualType lhs, QualType rhs); |
| |
| |
| /// AssignConvertType - All of the 'assignment' semantic checks return this |
| /// enum to indicate whether the assignment was allowed. These checks are |
| /// done for simple assignments, as well as initialization, return from |
| /// function, argument passing, etc. The query is phrased in terms of a |
| /// source and destination type. |
| enum AssignConvertType { |
| /// Compatible - the types are compatible according to the standard. |
| Compatible, |
| |
| /// PointerToInt - The assignment converts a pointer to an int, which we |
| /// accept as an extension. |
| PointerToInt, |
| |
| /// IntToPointer - The assignment converts an int to a pointer, which we |
| /// accept as an extension. |
| IntToPointer, |
| |
| /// FunctionVoidPointer - The assignment is between a function pointer and |
| /// void*, which the standard doesn't allow, but we accept as an extension. |
| FunctionVoidPointer, |
| |
| /// IncompatiblePointer - The assignment is between two pointers types that |
| /// are not compatible, but we accept them as an extension. |
| IncompatiblePointer, |
| |
| /// CompatiblePointerDiscardsQualifiers - The assignment discards |
| /// c/v/r qualifiers, which we accept as an extension. |
| CompatiblePointerDiscardsQualifiers, |
| |
| /// IntToBlockPointer - The assignment converts an int to a block |
| /// pointer. We disallow this. |
| IntToBlockPointer, |
| |
| /// IncompatibleBlockPointer - The assignment is between two block |
| /// pointers types that are not compatible. |
| IncompatibleBlockPointer, |
| |
| /// BlockVoidPointer - The assignment is between a block pointer and |
| /// void*, we accept for now. |
| BlockVoidPointer, |
| |
| /// IncompatibleObjCQualifiedId - The assignment is between a qualified |
| /// id type and something else (that is incompatible with it). For example, |
| /// "id <XXX>" = "Foo *", where "Foo *" doesn't implement the XXX protocol. |
| IncompatibleObjCQualifiedId, |
| |
| /// Incompatible - We reject this conversion outright, it is invalid to |
| /// represent it in the AST. |
| Incompatible |
| }; |
| |
| /// DiagnoseAssignmentResult - Emit a diagnostic, if required, for the |
| /// assignment conversion type specified by ConvTy. This returns true if the |
| /// conversion was invalid or false if the conversion was accepted. |
| bool DiagnoseAssignmentResult(AssignConvertType ConvTy, |
| SourceLocation Loc, |
| QualType DstType, QualType SrcType, |
| Expr *SrcExpr, const char *Flavor); |
| |
| /// CheckAssignmentConstraints - Perform type checking for assignment, |
| /// argument passing, variable initialization, and function return values. |
| /// This routine is only used by the following two methods. C99 6.5.16. |
| AssignConvertType CheckAssignmentConstraints(QualType lhs, QualType rhs); |
| |
| // CheckSingleAssignmentConstraints - Currently used by ActOnCallExpr, |
| // CheckAssignmentOperands, and ActOnReturnStmt. Prior to type checking, |
| // this routine performs the default function/array converions. |
| AssignConvertType CheckSingleAssignmentConstraints(QualType lhs, |
| Expr *&rExpr); |
| // CheckCompoundAssignmentConstraints - Type check without performing any |
| // conversions. For compound assignments, the "Check...Operands" methods |
| // perform the necessary conversions. |
| AssignConvertType CheckCompoundAssignmentConstraints(QualType lhs, |
| QualType rhs); |
| |
| // Helper function for CheckAssignmentConstraints (C99 6.5.16.1p1) |
| AssignConvertType CheckPointerTypesForAssignment(QualType lhsType, |
| QualType rhsType); |
| |
| // Helper function for CheckAssignmentConstraints involving two |
| // blcok pointer types. |
| AssignConvertType CheckBlockPointerTypesForAssignment(QualType lhsType, |
| QualType rhsType); |
| |
| bool IsStringLiteralToNonConstPointerConversion(Expr *From, QualType ToType); |
| |
| bool PerformImplicitConversion(Expr *&From, QualType ToType); |
| bool PerformImplicitConversion(Expr *&From, QualType ToType, |
| const StandardConversionSequence& SCS); |
| |
| /// the following "Check" methods will return a valid/converted QualType |
| /// or a null QualType (indicating an error diagnostic was issued). |
| |
| /// type checking binary operators (subroutines of ActOnBinOp). |
| inline QualType InvalidOperands(SourceLocation l, Expr *&lex, Expr *&rex); |
| inline QualType CheckMultiplyDivideOperands( // C99 6.5.5 |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isCompAssign = false); |
| inline QualType CheckRemainderOperands( // C99 6.5.5 |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isCompAssign = false); |
| inline QualType CheckAdditionOperands( // C99 6.5.6 |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isCompAssign = false); |
| inline QualType CheckSubtractionOperands( // C99 6.5.6 |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isCompAssign = false); |
| inline QualType CheckShiftOperands( // C99 6.5.7 |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isCompAssign = false); |
| inline QualType CheckCompareOperands( // C99 6.5.8/9 |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isRelational); |
| inline QualType CheckBitwiseOperands( // C99 6.5.[10...12] |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc, bool isCompAssign = false); |
| inline QualType CheckLogicalOperands( // C99 6.5.[13,14] |
| Expr *&lex, Expr *&rex, SourceLocation OpLoc); |
| // CheckAssignmentOperands is used for both simple and compound assignment. |
| // For simple assignment, pass both expressions and a null converted type. |
| // For compound assignment, pass both expressions and the converted type. |
| inline QualType CheckAssignmentOperands( // C99 6.5.16.[1,2] |
| Expr *lex, Expr *&rex, SourceLocation OpLoc, QualType convertedType); |
| inline QualType CheckCommaOperands( // C99 6.5.17 |
| Expr *lex, Expr *&rex, SourceLocation OpLoc); |
| inline QualType CheckConditionalOperands( // C99 6.5.15 |
| Expr *&cond, Expr *&lhs, Expr *&rhs, SourceLocation questionLoc); |
| |
| /// type checking for vector binary operators. |
| inline QualType CheckVectorOperands(SourceLocation l, Expr *&lex, Expr *&rex); |
| inline QualType CheckVectorCompareOperands(Expr *&lex, Expr *&rx, |
| SourceLocation l, bool isRel); |
| |
| /// type checking unary operators (subroutines of ActOnUnaryOp). |
| /// C99 6.5.3.1, 6.5.3.2, 6.5.3.4 |
| QualType CheckIncrementDecrementOperand(Expr *op, SourceLocation OpLoc); |
| QualType CheckAddressOfOperand(Expr *op, SourceLocation OpLoc); |
| QualType CheckIndirectionOperand(Expr *op, SourceLocation OpLoc); |
| QualType CheckRealImagOperand(Expr *&Op, SourceLocation OpLoc); |
| |
| /// type checking primary expressions. |
| QualType CheckExtVectorComponent(QualType baseType, SourceLocation OpLoc, |
| IdentifierInfo &Comp, SourceLocation CmpLoc); |
| |
| /// type checking declaration initializers (C99 6.7.8) |
| friend class InitListChecker; |
| bool CheckInitializerTypes(Expr *&simpleInit_or_initList, QualType &declType, |
| SourceLocation InitLoc, std::string InitEntity); |
| bool CheckSingleInitializer(Expr *&simpleInit, QualType declType); |
| bool CheckForConstantInitializer(Expr *e, QualType t); |
| bool CheckArithmeticConstantExpression(const Expr* e); |
| bool CheckAddressConstantExpression(const Expr* e); |
| bool CheckAddressConstantExpressionLValue(const Expr* e); |
| void InitializerElementNotConstant(const Expr *e); |
| |
| StringLiteral *IsStringLiteralInit(Expr *Init, QualType DeclType); |
| bool CheckStringLiteralInit(StringLiteral *strLiteral, QualType &DeclT); |
| |
| // type checking C++ declaration initializers (C++ [dcl.init]). |
| |
| /// ReferenceCompareResult - Expresses the result of comparing two |
| /// types (cv1 T1 and cv2 T2) to determine their compatibility for the |
| /// purposes of initialization by reference (C++ [dcl.init.ref]p4). |
| enum ReferenceCompareResult { |
| /// Ref_Incompatible - The two types are incompatible, so direct |
| /// reference binding is not possible. |
| Ref_Incompatible = 0, |
| /// Ref_Related - The two types are reference-related, which means |
| /// that their unqualified forms (T1 and T2) are either the same |
| /// or T1 is a base class of T2. |
| Ref_Related, |
| /// Ref_Compatible_With_Added_Qualification - The two types are |
| /// reference-compatible with added qualification, meaning that |
| /// they are reference-compatible and the qualifiers on T1 (cv1) |
| /// are greater than the qualifiers on T2 (cv2). |
| Ref_Compatible_With_Added_Qualification, |
| /// Ref_Compatible - The two types are reference-compatible and |
| /// have equivalent qualifiers (cv1 == cv2). |
| Ref_Compatible |
| }; |
| |
| ReferenceCompareResult CompareReferenceRelationship(QualType T1, QualType T2, |
| bool& DerivedToBase); |
| |
| bool CheckReferenceInit(Expr *&simpleInit_or_initList, QualType &declType, |
| ImplicitConversionSequence *ICS = 0, |
| bool SuppressUserConversions = false); |
| |
| /// CheckCastTypes - Check type constraints for casting between types. |
| bool CheckCastTypes(SourceRange TyRange, QualType CastTy, Expr *&CastExpr); |
| |
| // CheckVectorCast - check type constraints for vectors. |
| // Since vectors are an extension, there are no C standard reference for this. |
| // We allow casting between vectors and integer datatypes of the same size. |
| // returns true if the cast is invalid |
| bool CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty); |
| |
| /// CheckMessageArgumentTypes - Check types in an Obj-C message send. |
| /// \param Method - May be null. |
| /// \param [out] ReturnType - The return type of the send. |
| /// \return true iff there were any incompatible types. |
| bool CheckMessageArgumentTypes(Expr **Args, unsigned NumArgs, Selector Sel, |
| ObjCMethodDecl *Method, bool isClassMessage, |
| SourceLocation lbrac, SourceLocation rbrac, |
| QualType &ReturnType); |
| |
| /// CheckCXXBooleanCondition - Returns true if conversion to bool is invalid. |
| bool CheckCXXBooleanCondition(Expr *&CondExpr); |
| |
| /// ConvertIntegerToTypeWarnOnOverflow - Convert the specified APInt to have |
| /// the specified width and sign. If an overflow occurs, detect it and emit |
| /// the specified diagnostic. |
| void ConvertIntegerToTypeWarnOnOverflow(llvm::APSInt &OldVal, |
| unsigned NewWidth, bool NewSign, |
| SourceLocation Loc, unsigned DiagID); |
| |
| bool ObjCQualifiedIdTypesAreCompatible(QualType LHS, QualType RHS, |
| bool ForCompare); |
| |
| /// Checks that the Objective-C declaration is declared in the global scope. |
| /// Emits an error and marks the declaration as invalid if it's not declared |
| /// in the global scope. |
| bool CheckObjCDeclScope(Decl *D); |
| |
| void InitBuiltinVaListType(); |
| |
| //===--------------------------------------------------------------------===// |
| // Extra semantic analysis beyond the C type system |
| private: |
| Action::ExprResult CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall); |
| bool CheckBuiltinCFStringArgument(Expr* Arg); |
| bool SemaBuiltinVAStart(CallExpr *TheCall); |
| bool SemaBuiltinUnorderedCompare(CallExpr *TheCall); |
| bool SemaBuiltinStackAddress(CallExpr *TheCall); |
| Action::ExprResult SemaBuiltinShuffleVector(CallExpr *TheCall); |
| bool SemaBuiltinPrefetch(CallExpr *TheCall); |
| bool SemaBuiltinObjectSize(CallExpr *TheCall); |
| void CheckPrintfArguments(CallExpr *TheCall, |
| bool HasVAListArg, unsigned format_idx); |
| void CheckReturnStackAddr(Expr *RetValExp, QualType lhsType, |
| SourceLocation ReturnLoc); |
| void CheckFloatComparison(SourceLocation loc, Expr* lex, Expr* rex); |
| }; |
| |
| class InitListChecker { |
| Sema *SemaRef; |
| bool hadError; |
| |
| void CheckImplicitInitList(InitListExpr *ParentIList, QualType T, |
| unsigned &Index); |
| void CheckExplicitInitList(InitListExpr *IList, QualType &T, |
| unsigned &Index); |
| |
| void CheckListElementTypes(InitListExpr *IList, QualType &DeclType, |
| unsigned &Index); |
| void CheckSubElementType(InitListExpr *IList, QualType ElemType, |
| unsigned &Index); |
| // FIXME: Does DeclType need to be a reference type? |
| void CheckScalarType(InitListExpr *IList, QualType &DeclType, |
| unsigned &Index); |
| void CheckVectorType(InitListExpr *IList, QualType DeclType, unsigned &Index); |
| void CheckStructUnionTypes(InitListExpr *IList, QualType DeclType, |
| unsigned &Index); |
| void CheckArrayType(InitListExpr *IList, QualType &DeclType, unsigned &Index); |
| |
| int numArrayElements(QualType DeclType); |
| int numStructUnionElements(QualType DeclType); |
| public: |
| InitListChecker(Sema *S, InitListExpr *IL, QualType &T); |
| bool HadError() { return hadError; } |
| }; |
| |
| /// BlockSemaInfo - When a block is being parsed, this contains information |
| /// about the block. It is pointed to from Sema::CurBlock. |
| struct BlockSemaInfo { |
| llvm::SmallVector<ParmVarDecl*, 8> Params; |
| bool hasPrototype; |
| bool isVariadic; |
| |
| BlockDecl *TheDecl; |
| |
| /// TheScope - This is the scope for the block itself, which contains |
| /// arguments etc. |
| Scope *TheScope; |
| |
| /// ReturnType - This will get set to block result type, by looking at |
| /// return types, if any, in the block body. |
| Type *ReturnType; |
| |
| /// PrevBlockInfo - If this is nested inside another block, this points |
| /// to the outer block. |
| BlockSemaInfo *PrevBlockInfo; |
| }; |
| |
| |
| } // end namespace clang |
| |
| #endif |