| //===--- 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 "clang/Parse/Action.h" |
| #include "clang/Parse/DeclSpec.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include <vector> |
| #include <string> |
| |
| namespace llvm { |
| class APSInt; |
| } |
| |
| namespace clang { |
| class ASTContext; |
| class ASTConsumer; |
| class Preprocessor; |
| class Decl; |
| 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 OCUVectorType; |
| class TypedefDecl; |
| class ObjCInterfaceDecl; |
| class ObjCProtocolDecl; |
| class ObjCImplementationDecl; |
| class ObjCCategoryImplDecl; |
| class ObjCCategoryDecl; |
| class ObjCIvarDecl; |
| class ObjCMethodDecl; |
| |
| /// Sema - This implements semantic analysis and AST building for C. |
| class Sema : public Action { |
| Preprocessor &PP; |
| ASTContext &Context; |
| ASTConsumer &Consumer; |
| |
| /// CurFunctionDecl - If inside of a function body, this contains a pointer to |
| /// the function decl for the function being parsed. |
| FunctionDecl *CurFunctionDecl; |
| |
| /// CurMethodDecl - If inside of a method body, this contains a pointer to |
| /// the method decl for the method being parsed. |
| ObjCMethodDecl *CurMethodDecl; |
| |
| /// 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; |
| |
| /// OCUVectorDecls - This is a list all the OCU vector types. This allows |
| /// us to associate a raw vector type with one of the OCU type names. |
| /// This is only necessary for issuing pretty diagnostics. |
| llvm::SmallVector<TypedefDecl*, 24> OCUVectorDecls; |
| |
| /// ObjCImplementations - Keep track of all of the classes with |
| /// @implementation's, so that we can emit errors on duplicates. |
| llvm::DenseMap<IdentifierInfo*, ObjCImplementationDecl*> ObjCImplementations; |
| |
| /// 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; |
| |
| // Enum values used by KnownFunctionIDs (see below). |
| enum { |
| id_printf, |
| id_fprintf, |
| id_sprintf, |
| id_snprintf, |
| id_asprintf, |
| id_vsnprintf, |
| id_vasprintf, |
| id_vfprintf, |
| id_vsprintf, |
| 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; |
| |
| /// 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; |
| |
| /// The primitive diagnostic helpers - always returns true, which simplifies |
| /// error handling (i.e. less code). |
| bool Diag(SourceLocation Loc, unsigned DiagID); |
| bool Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg); |
| bool Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg1, |
| const std::string &Msg2); |
| |
| /// More expressive diagnostic helpers for expressions (say that 6 times:-) |
| bool Diag(SourceLocation Loc, unsigned DiagID, SourceRange R1); |
| bool Diag(SourceLocation Loc, unsigned DiagID, |
| SourceRange R1, SourceRange R2); |
| bool Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg, |
| SourceRange R1); |
| bool Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg, |
| SourceRange R1, SourceRange R2); |
| bool Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg1, |
| const std::string &Msg2, SourceRange R1); |
| bool Diag(SourceLocation Loc, unsigned DiagID, const std::string &Msg1, |
| const std::string &Msg2, const std::string &Msg3, SourceRange R1); |
| bool Diag(SourceLocation Loc, unsigned DiagID, |
| const std::string &Msg1, const std::string &Msg2, |
| SourceRange R1, SourceRange R2); |
| |
| virtual void DeleteExpr(ExprTy *E); |
| virtual void DeleteStmt(StmtTy *S); |
| |
| //===--------------------------------------------------------------------===// |
| // Type Analysis / Processing: SemaType.cpp. |
| // |
| QualType ConvertDeclSpecToType(DeclSpec &DS); |
| AttributeList *ProcessTypeAttributes(QualType &Result, AttributeList *AL); |
| QualType GetTypeForDeclarator(Declarator &D, Scope *S); |
| |
| |
| QualType ObjCGetTypeForMethodDefinition(DeclTy *D); |
| |
| |
| virtual TypeResult ActOnTypeName(Scope *S, Declarator &D); |
| |
| virtual TypeResult ActOnParamDeclaratorType(Scope *S, Declarator &D); |
| private: |
| //===--------------------------------------------------------------------===// |
| // Symbol table / Decl tracking callbacks: SemaDecl.cpp. |
| // |
| virtual DeclTy *isTypeName(const IdentifierInfo &II, Scope *S) const; |
| virtual DeclTy *ActOnDeclarator(Scope *S, Declarator &D, DeclTy *LastInGroup); |
| void AddInitializerToDecl(DeclTy *dcl, ExprTy *init); |
| virtual DeclTy *FinalizeDeclaratorGroup(Scope *S, DeclTy *Group); |
| |
| virtual DeclTy *ActOnStartOfFunctionDef(Scope *S, Declarator &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, IdentifierInfo *Name, |
| SourceLocation NameLoc, AttributeList *Attr); |
| virtual DeclTy *ActOnField(Scope *S, DeclTy *TagDecl,SourceLocation DeclStart, |
| Declarator &D, ExprTy *BitfieldWidth); |
| |
| // 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, |
| tok::ObjCKeywordKind *visibility = 0); |
| 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); |
| private: |
| /// Subroutines of ActOnDeclarator(). |
| TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, |
| ScopedDecl *LastDecl); |
| TypedefDecl *MergeTypeDefDecl(TypedefDecl *New, ScopedDecl *Old); |
| FunctionDecl *MergeFunctionDecl(FunctionDecl *New, ScopedDecl *Old); |
| VarDecl *MergeVarDecl(VarDecl *New, ScopedDecl *Old); |
| |
| /// More parsing and symbol table subroutines... |
| ParmVarDecl *ActOnParamDeclarator(struct DeclaratorChunk::ParamInfo &PI, |
| Scope *FnBodyScope); |
| ScopedDecl *LookupScopedDecl(IdentifierInfo *II, unsigned NSI, |
| SourceLocation IdLoc, Scope *S); |
| ScopedDecl *LookupInterfaceDecl(IdentifierInfo *II); |
| 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 HandleDeclAttributes(Decl *New, AttributeList *declspec_prefix, |
| AttributeList *declarator_postfix); |
| void HandleDeclAttribute(Decl *New, AttributeList *rawAttr); |
| |
| /// HandleAddressSpaceTypeAttribute - this attribute is only applicable to |
| /// objects without automatic storage duration. |
| /// The raw attribute contains 1 argument, the id of the address space |
| /// for the type. |
| QualType HandleAddressSpaceTypeAttribute(QualType curType, |
| AttributeList *rawAttr); |
| |
| // HandleVectorTypeAttribute - this attribute is only applicable to |
| // integral and float scalars, although arrays, pointers, and function |
| // return values are allowed in conjunction with this construct. Aggregates |
| // with this attribute are invalid, even if they are of the same size as a |
| // corresponding scalar. |
| // The raw attribute should contain precisely 1 argument, the vector size |
| // for the variable, measured in bytes. If curType and rawAttr are well |
| // formed, this routine will return a new vector type. |
| QualType HandleVectorTypeAttribute(QualType curType, AttributeList *rawAttr); |
| void HandleOCUVectorTypeAttribute(TypedefDecl *d, AttributeList *rawAttr); |
| |
| void HandleAlignedAttribute(Decl *d, AttributeList *rawAttr); |
| void HandlePackedAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleAnnotateAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleNoReturnAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleDeprecatedAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleWeakAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleDLLImportAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleDLLExportAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleVisibilityAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleNothrowAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleFormatAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleStdCallAttribute(Decl *d, AttributeList *rawAttr); |
| void HandleFastCallAttribute(Decl *d, AttributeList *rawAttr); |
| |
| void WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method, |
| bool &IncompleteImpl); |
| |
| /// CheckProtocolMethodDefs - This routine checks unimpletented methods |
| /// Declared in protocol, and those referenced by it. |
| void CheckProtocolMethodDefs(SourceLocation ImpLoc, |
| ObjCProtocolDecl *PDecl, |
| bool& IncompleteImpl, |
| const llvm::DenseSet<Selector> &InsMap, |
| const llvm::DenseSet<Selector> &ClsMap); |
| |
| /// 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); |
| |
| /// isBuiltinObjCType - Returns true of the type is "id", "SEL", "Class" |
| /// or "Protocol". |
| bool isBuiltinObjCType(TypedefDecl *TD); |
| |
| /// isObjCObjectPointerType - Returns true if type is an objective-c pointer |
| /// to an object type; such as "id", "Class", Intf*, id<P>, etc. |
| bool isObjCObjectPointerType(QualType type) const; |
| |
| /// 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); |
| |
| /// 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); |
| 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); |
| |
| 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); |
| 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(SourceLocation OpLoc, tok::TokenKind Op, |
| ExprTy *Input); |
| virtual ExprResult |
| ActOnSizeOfAlignOfTypeExpr(SourceLocation OpLoc, bool isSizeof, |
| SourceLocation LParenLoc, TypeTy *Ty, |
| SourceLocation RParenLoc); |
| |
| virtual ExprResult ActOnPostfixUnaryOp(SourceLocation OpLoc, |
| tok::TokenKind Kind, ExprTy *Input); |
| |
| virtual ExprResult ActOnArraySubscriptExpr(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, |
| SourceLocation RParenLoc); |
| |
| virtual ExprResult ActOnBinOp(SourceLocation TokLoc, tok::TokenKind Kind, |
| ExprTy *LHS,ExprTy *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); |
| |
| /// ActOnCXXCasts - Parse {dynamic,static,reinterpret,const}_cast's. |
| virtual ExprResult ActOnCXXCasts(SourceLocation OpLoc, tok::TokenKind Kind, |
| SourceLocation LAngleBracketLoc, TypeTy *Ty, |
| SourceLocation RAngleBracketLoc, |
| SourceLocation LParenLoc, ExprTy *E, |
| SourceLocation RParenLoc); |
| |
| /// ActOnCXXBoolLiteral - Parse {true,false} literals. |
| virtual ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, |
| tok::TokenKind Kind); |
| |
| //// ActOnCXXThrow - Parse throw expressions. |
| virtual ExprResult ActOnCXXThrow(SourceLocation OpLoc, |
| ExprTy *expr); |
| |
| // 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); |
| |
| // Objective-C declarations. |
| virtual DeclTy *ActOnStartClassInterface( |
| SourceLocation AtInterafceLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *SuperName, SourceLocation SuperLoc, |
| IdentifierInfo **ProtocolNames, unsigned NumProtocols, |
| 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, |
| IdentifierInfo **ProtoRefNames, unsigned NumProtoRefs, |
| SourceLocation EndProtoLoc); |
| |
| virtual DeclTy *ActOnStartCategoryInterface( |
| SourceLocation AtInterfaceLoc, |
| IdentifierInfo *ClassName, SourceLocation ClassLoc, |
| IdentifierInfo *CategoryName, SourceLocation CategoryLoc, |
| IdentifierInfo **ProtoRefNames, 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, |
| IdentifierInfo **IdentList, |
| unsigned NumElts); |
| |
| virtual void FindProtocolDeclaration(SourceLocation TypeLoc, |
| IdentifierInfo **ProtocolId, |
| unsigned NumProtocols, |
| llvm::SmallVector<DeclTy *, 8> & |
| Protocols); |
| |
| virtual void ActOnAtEnd(SourceLocation AtEndLoc, DeclTy *classDecl, |
| DeclTy **allMethods = 0, unsigned allNum = 0, |
| DeclTy **allProperties = 0, unsigned pNum = 0); |
| |
| virtual DeclTy *ActOnAddObjCProperties(SourceLocation AtLoc, |
| DeclTy **allProperties, |
| unsigned NumProperties, |
| ObjCDeclSpec &DS); |
| |
| 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 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); |
| private: |
| /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit |
| /// cast. If there is already an implicit cast, merge into the existing one. |
| void ImpCastExprToType(Expr *&Expr, QualType Type); |
| |
| // 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); |
| |
| /// 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, |
| |
| /// 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); |
| |
| /// 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 CheckVectorOperands(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 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 CheckSizeOfAlignOfOperand(QualType type, SourceLocation loc, |
| bool isSizeof); |
| QualType CheckRealImagOperand(Expr *&Op, SourceLocation OpLoc); |
| |
| /// type checking primary expressions. |
| QualType CheckOCUVectorComponent(QualType baseType, SourceLocation OpLoc, |
| IdentifierInfo &Comp, SourceLocation CmpLoc); |
| |
| /// type checking declaration initializers (C99 6.7.8) |
| bool CheckInitializerTypes(Expr *&simpleInit_or_initList, QualType &declType); |
| bool CheckSingleInitializer(Expr *&simpleInit, QualType declType); |
| bool CheckInitExpr(Expr *expr, InitListExpr *IList, unsigned slot, |
| QualType ElementType); |
| bool CheckInitializerListTypes(InitListExpr*& IList, QualType &DeclType, |
| bool topLevel, unsigned& startIndex); |
| bool CheckForConstantInitializer(Expr *e, QualType t); |
| |
| StringLiteral *IsStringLiteralInit(Expr *Init, QualType DeclType); |
| bool CheckStringLiteralInit(StringLiteral *strLiteral, QualType &DeclT); |
| |
| // 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); |
| |
| // returns true if there were any incompatible arguments. |
| bool CheckMessageArgumentTypes(Expr **Args, unsigned NumArgs, |
| ObjCMethodDecl *Method); |
| |
| /// 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); |
| |
| void InitBuiltinVaListType(); |
| |
| //===--------------------------------------------------------------------===// |
| // Extra semantic analysis beyond the C type system |
| private: |
| bool CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall); |
| bool CheckBuiltinCFStringArgument(Expr* Arg); |
| bool SemaBuiltinVAStart(CallExpr *TheCall); |
| bool SemaBuiltinUnorderedCompare(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); |
| }; |
| |
| |
| } // end namespace clang |
| |
| #endif |