DeclBase.h revision 69c8f0aab655257e9e532d9d53756acf4f7a2d78
10ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner//===-- DeclBase.h - Base Classes for representing declarations *- C++ -*-===// 20ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// 30ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// The LLVM Compiler Infrastructure 40ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// 50ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// This file is distributed under the University of Illinois Open Source 60ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// License. See LICENSE.TXT for details. 70ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// 80ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner//===----------------------------------------------------------------------===// 90ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// 10b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner// This file defines the Decl and DeclContext interfaces. 110ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner// 120ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner//===----------------------------------------------------------------------===// 130ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 140ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner#ifndef LLVM_CLANG_AST_DECLBASE_H 150ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner#define LLVM_CLANG_AST_DECLBASE_H 160ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 170ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner#include "clang/AST/Attr.h" 180ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner#include "clang/AST/Type.h" 190ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner#include "clang/Basic/SourceLocation.h" 200ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 210ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnernamespace clang { 22ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidisclass TranslationUnitDecl; 232d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidisclass NamespaceDecl; 24d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidisclass ScopedDecl; 250ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerclass FunctionDecl; 26d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidisclass CXXRecordDecl; 27b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnerclass EnumDecl; 28d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidisclass ObjCMethodDecl; 290ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerclass ObjCInterfaceDecl; 300ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 310ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// Decl - This represents one declaration (or definition), e.g. a variable, 320ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// typedef, function, struct, etc. 330ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// 340ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerclass Decl { 350ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerpublic: 360ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner enum Kind { 370ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // This lists the concrete classes of Decl in order of the inheritance 380ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // hierarchy. This allows us to do efficient classof tests based on the 390ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // enums below. The commented out names are abstract class names. 40d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis // [DeclContext] indicatea that the class also inherits from DeclContext. 410ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 420ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // Decl 43d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis TranslationUnit, // [DeclContext] 440ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // NamedDecl 450ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Field, 46d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXField, 470ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCIvar, 480ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCCategory, 490ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCCategoryImpl, 500ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCImplementation, 510ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCProtocol, 52670aa9d7639278f507930e95dc89c12032ab7c7eSam Bishop ObjCProperty, 530ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // ScopedDecl 54d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis Namespace, // [DeclContext] 550ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // TypeDecl 560ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Typedef, 570ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // TagDecl 58d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis Enum, // [DeclContext] 590ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // RecordDecl 600ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Struct, 610ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Union, 620ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Class, 63d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis // CXXRecordDecl [DeclContext] 64d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXStruct, 65d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXUnion, 66d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXClass, 670ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // ValueDecl 680ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner EnumConstant, 69d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis Function, // [DeclContext] 70d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXMethod, 71248a753f6b670692523c99afaeb8fe98f7ae3ca7Steve Naroff Var, 724111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner ImplicitParam, 73d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXClassVar, 740ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ParmVar, 75d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis ObjCInterface, // [DeclContext] 760ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCCompatibleAlias, 77d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis ObjCMethod, // [DeclContext] 780ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCClass, 790ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner ObjCForwardProtocol, 8061d46159af2a740207de8dc024211d531ae290d9Fariborz Jahanian ObjCPropertyImpl, 810ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner LinkageSpec, 820ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner FileScopeAsm, 830ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 840ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // For each non-leaf class, we now define a mapping to the first/last member 850ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // of the class, to allow efficient classof. 86d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis NamedFirst = Field , NamedLast = ParmVar, 87d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis FieldFirst = Field , FieldLast = ObjCIvar, 88d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis ScopedFirst = Namespace , ScopedLast = ParmVar, 89d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis TypeFirst = Typedef , TypeLast = CXXClass, 90d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis TagFirst = Enum , TagLast = CXXClass, 91d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis RecordFirst = Struct , RecordLast = CXXClass, 92d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis CXXRecordFirst = CXXStruct , CXXRecordLast = CXXClass, 93d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis ValueFirst = EnumConstant , ValueLast = ParmVar, 94d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis FunctionFirst = Function , FunctionLast = CXXMethod, 95d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis VarFirst = Var , VarLast = ParmVar 960ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner }; 970ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 980ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// IdentifierNamespace - According to C99 6.2.3, there are four namespaces, 992ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor /// labels, tags, members and ordinary identifiers. These are meant 1002ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor /// as bitmasks, so that searches in C++ can look into the "tag" namespace 1012ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor /// during ordinary lookup. 1020ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner enum IdentifierNamespace { 1032ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor IDNS_Label = 0x1, 1042ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor IDNS_Tag = 0x2, 1052ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor IDNS_Member = 0x4, 1062ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor IDNS_Ordinary = 0x8 1070ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner }; 1080ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1090ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// ObjCDeclQualifier - Qualifier used on types in method declarations 1100ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// for remote messaging. They are meant for the arguments though and 1110ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// applied to the Decls (ObjCMethodDecl and ParmVarDecl). 1120ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner enum ObjCDeclQualifier { 1130ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_None = 0x0, 1140ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_In = 0x1, 1150ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_Inout = 0x2, 1160ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_Out = 0x4, 1170ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_Bycopy = 0x8, 1180ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_Byref = 0x10, 1190ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner OBJC_TQ_Oneway = 0x20 1200ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner }; 1210ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1220ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerprivate: 1230ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// Loc - The location that this decl. 1240ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner SourceLocation Loc; 1250ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1260ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// DeclKind - This indicates which class this is. 1270ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Kind DeclKind : 8; 1280ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1290ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// InvalidDecl - This indicates a semantic error occurred. 1300ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner unsigned int InvalidDecl : 1; 1310ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1320ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// HasAttrs - This indicates whether the decl has attributes or not. 1330ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner unsigned int HasAttrs : 1; 134d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis 135d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis protected: 136d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis /// Access - Used by C++ decls for the access specifier. 137d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis // NOTE: VC++ treats enums as signed, avoid using the AccessSpecifier enum 138d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis unsigned Access : 2; 139d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis friend class CXXClassMemberWrapper; 140d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis 1410ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Decl(Kind DK, SourceLocation L) : Loc(L), DeclKind(DK), InvalidDecl(0), 1420ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner HasAttrs(false) { 1430ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner if (Decl::CollectingStats()) addDeclKind(DK); 1440ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 1451bb19638f2ec0d63ed131b51ca8d9542d1a9afeeSam Bishop 1460ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner virtual ~Decl(); 1471bb19638f2ec0d63ed131b51ca8d9542d1a9afeeSam Bishop 1481bb19638f2ec0d63ed131b51ca8d9542d1a9afeeSam Bishoppublic: 1490ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner SourceLocation getLocation() const { return Loc; } 1500ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner void setLocation(SourceLocation L) { Loc = L; } 1510ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1520ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Kind getKind() const { return DeclKind; } 1530ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner const char *getDeclKindName() const; 1540ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1550ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner void addAttr(Attr *attr); 1560ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner const Attr *getAttrs() const; 157a212c56e9b7533bcc2d6be90efd52ad241bf894eChris Lattner void swapAttrs(Decl *D); 1589141bee299a05349924a34a7153d7064c9e0a107Nuno Lopes void invalidateAttrs(); 1590ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1600ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner template<typename T> const T *getAttr() const { 1610ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner for (const Attr *attr = getAttrs(); attr; attr = attr->getNext()) 1620ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner if (const T *V = dyn_cast<T>(attr)) 1630ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return V; 1640ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1650ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return 0; 1660ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 1670ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1680ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// setInvalidDecl - Indicates the Decl had a semantic error. This 1690ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// allows for graceful error recovery. 1700ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner void setInvalidDecl() { InvalidDecl = 1; } 1710ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner bool isInvalidDecl() const { return (bool) InvalidDecl; } 1720ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 1730ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner IdentifierNamespace getIdentifierNamespace() const { 1740ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner switch (DeclKind) { 1750ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner default: assert(0 && "Unknown decl kind!"); 1764111024be81e7c0525e42dadcc126d27e5bf2425Chris Lattner case ImplicitParam: 1770ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Typedef: 1780ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Function: 179248a753f6b670692523c99afaeb8fe98f7ae3ca7Steve Naroff case Var: 1800ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case ParmVar: 1810ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case EnumConstant: 1820ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case ObjCInterface: 1830ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case ObjCCompatibleAlias: 184d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case CXXField: 1851ce6eadf80453d132d378ee031f3fbf5259a7d2aArgyrios Kyrtzidis case CXXMethod: 18609c31b0d78fc4e7f1d1828d01d9977cc3e242ea3Argyrios Kyrtzidis case CXXClassVar: 1870ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return IDNS_Ordinary; 1880ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Struct: 1890ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Union: 1900ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Class: 191d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case CXXStruct: 192d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case CXXUnion: 193d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case CXXClass: 1940ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Enum: 1950ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return IDNS_Tag; 1962d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis case Namespace: 1972d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis return IdentifierNamespace(IDNS_Tag | IDNS_Ordinary); 1980ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 1990ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 200792481eec23d8c1aa92173be589e2ae9d02514a5Ted Kremenek 20169c8f0aab655257e9e532d9d53756acf4f7a2d78Ted Kremenek // getBody - If this Decl represents a declaration for a body of code, 202792481eec23d8c1aa92173be589e2ae9d02514a5Ted Kremenek // such as a function or method definition, this method returns the top-level 20369c8f0aab655257e9e532d9d53756acf4f7a2d78Ted Kremenek // Stmt* of that body. Otherwise this method returns null. 20469c8f0aab655257e9e532d9d53756acf4f7a2d78Ted Kremenek virtual Stmt* getBody() const { return 0; } 205792481eec23d8c1aa92173be589e2ae9d02514a5Ted Kremenek 2060ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // global temp stats (until we have a per-module visitor) 2070ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static void addDeclKind(Kind k); 2080ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static bool CollectingStats(bool Enable = false); 2090ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static void PrintStats(); 2100ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2110ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // Implement isa/cast/dyncast/etc. 2120ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static bool classof(const Decl *) { return true; } 2130ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2140ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// Emit - Serialize this Decl to Bitcode. 2150ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner void Emit(llvm::Serializer& S) const; 2160ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2170ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// Create - Deserialize a Decl from Bitcode. 218e2563ca02a519c2ad6d64dfed87d6e86c5d3c072Sam Bishop static Decl* Create(llvm::Deserializer& D, ASTContext& C); 2190ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 220bb45c512e0dfbe96bfe377ac642e726c0ba0affaSam Bishop /// Destroy - Call destructors and release memory. 22127f8a28bee33bb0e857cfe1a61c281bbc234b338Ted Kremenek virtual void Destroy(ASTContext& C); 222bb45c512e0dfbe96bfe377ac642e726c0ba0affaSam Bishop 2230ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerprotected: 2240ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// EmitImpl - Provides the subclass-specific serialization logic for 2250ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// serializing out a decl. 2260ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner virtual void EmitImpl(llvm::Serializer& S) const { 2270ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // FIXME: This will eventually be a pure virtual function. 2280ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner assert (false && "Not implemented."); 2290ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 2300ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2310ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner void EmitInRec(llvm::Serializer& S) const; 232e2563ca02a519c2ad6d64dfed87d6e86c5d3c072Sam Bishop void ReadInRec(llvm::Deserializer& D, ASTContext& C); 2330ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 2340ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 235b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner/// DeclContext - This is used only as base class of specific decl types that 2360ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// can act as declaration contexts. These decls are: 2370ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// 238ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis/// TranslationUnitDecl 2392d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis/// NamespaceDecl 2400ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// FunctionDecl 241d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis/// CXXRecordDecl 242b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner/// EnumDecl 243d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis/// ObjCMethodDecl 2440ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// ObjCInterfaceDecl 2450ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner/// 246b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnerclass DeclContext { 2470ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// DeclKind - This indicates which class this is. 2480ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Decl::Kind DeclKind : 8; 2490ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2507643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis /// DeclChain - Linked list of declarations that are defined inside this 2517643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis /// declaration context. 2527643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis ScopedDecl *DeclChain; 2537643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis 2540ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // Used in the CastTo template to get the DeclKind 255b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner // from a Decl or a DeclContext. DeclContext doesn't have a getKind() method 2560ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // to avoid 'ambiguous access' compiler errors. 2570ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner template<typename T> struct KindTrait { 2580ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static Decl::Kind getKind(const T *D) { return D->getKind(); } 2590ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner }; 2600ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2610ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner // Used only by the ToDecl and FromDecl methods 2620ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner template<typename To, typename From> 2630ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static To *CastTo(const From *D) { 2640ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner Decl::Kind DK = KindTrait<From>::getKind(D); 2650ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner switch(DK) { 266ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis case Decl::TranslationUnit: 267ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis return static_cast<TranslationUnitDecl*>(const_cast<From*>(D)); 2682d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis case Decl::Namespace: 2692d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis return static_cast<NamespaceDecl*>(const_cast<From*>(D)); 270d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case Decl::Enum: 271d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis return static_cast<EnumDecl*>(const_cast<From*>(D)); 2720ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Decl::ObjCMethod: 2730ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return static_cast<ObjCMethodDecl*>(const_cast<From*>(D)); 2740ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Decl::ObjCInterface: 2750ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return static_cast<ObjCInterfaceDecl*>(const_cast<From*>(D)); 2760ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner default: 277d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis if (DK >= Decl::FunctionFirst && DK <= Decl::FunctionLast) 278d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis return static_cast<FunctionDecl*>(const_cast<From*>(D)); 279d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis if (DK >= Decl::CXXRecordFirst && DK <= Decl::CXXRecordLast) 280d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis return static_cast<CXXRecordDecl*>(const_cast<From*>(D)); 281d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis 282b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner assert(false && "a decl that inherits DeclContext isn't handled"); 2830ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return 0; 2840ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 2850ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 2860ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2870ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerprotected: 2887643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis DeclContext(Decl::Kind K) : DeclKind(K), DeclChain(0) {} 2890ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2900ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnerpublic: 291b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner /// getParent - Returns the containing DeclContext if this is a ScopedDecl, 2920ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// else returns NULL. 293b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner DeclContext *getParent() const; 2940ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 2950ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner bool isFunctionOrMethod() const { 2960ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner switch (DeclKind) { 2970ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Decl::Function: 298d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case Decl::CXXMethod: 2990ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Decl::ObjCMethod: 3000ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return true; 3010ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner default: 3020ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return false; 3030ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3040ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3050ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 3067643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis ScopedDecl *getDeclChain() const { return DeclChain; } 3077643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis void setDeclChain(ScopedDecl *D) { DeclChain = D; } 3087643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis 309b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner /// ToDecl and FromDecl make Decl <-> DeclContext castings. 3100ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// They are intended to be used by the simplify_type and cast_convert_val 3110ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner /// templates. 312b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static Decl *ToDecl (const DeclContext *D); 313b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static DeclContext *FromDecl (const Decl *D); 3140ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 3150ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static bool classof(const Decl *D) { 3160ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner switch (D->getKind()) { 317ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis case Decl::TranslationUnit: 3182d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis case Decl::Namespace: 319d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis case Decl::Enum: 3200ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Decl::ObjCMethod: 3210ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner case Decl::ObjCInterface: 3220ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner return true; 3230ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner default: 324d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis if (D->getKind() >= Decl::FunctionFirst && 325d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis D->getKind() <= Decl::FunctionLast) 326d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis return true; 327d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis if (D->getKind() >= Decl::CXXRecordFirst && 328d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis D->getKind() <= Decl::CXXRecordLast) 329d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis return true; 330b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner return false; 3310ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3320ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 333b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static bool classof(const DeclContext *D) { return true; } 334ef177820100ab583b08fd3056e2a5a52ee4b1629Argyrios Kyrtzidis static bool classof(const TranslationUnitDecl *D) { return true; } 3352d1c5d313cd0c229cc614e74baa4c5756a4b46f4Argyrios Kyrtzidis static bool classof(const NamespaceDecl *D) { return true; } 3360ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static bool classof(const FunctionDecl *D) { return true; } 337d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis static bool classof(const CXXRecordDecl *D) { return true; } 338b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static bool classof(const EnumDecl *D) { return true; } 339d3bb44f0f1a83cb208d3e61ee80afe6a4d20d2d8Argyrios Kyrtzidis static bool classof(const ObjCMethodDecl *D) { return true; } 3400ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner static bool classof(const ObjCInterfaceDecl *D) { return true; } 3417643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis 3427643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidisprivate: 3437643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis void EmitOutRec(llvm::Serializer& S) const; 3447643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis void ReadOutRec(llvm::Deserializer& D, ASTContext& C); 3457643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis 3467643536c36b0449256d5ee2efc03a7e4a784a0b3Argyrios Kyrtzidis friend class Decl; 3470ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 3480ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 349b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnertemplate<> struct DeclContext::KindTrait<DeclContext> { 350b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static Decl::Kind getKind(const DeclContext *D) { return D->DeclKind; } 3510ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 3520ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 3530ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner} // end clang. 3540ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 3550ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnernamespace llvm { 356b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner/// Implement simplify_type for DeclContext, so that we can dyn_cast from 357b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner/// DeclContext to a specific Decl class. 358b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner template<> struct simplify_type<const ::clang::DeclContext*> { 3590ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner typedef ::clang::Decl* SimpleType; 360b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static SimpleType getSimplifiedValue(const ::clang::DeclContext *Val) { 361b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner return ::clang::DeclContext::ToDecl(Val); 3620ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3630ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 364b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnertemplate<> struct simplify_type< ::clang::DeclContext*> 365b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner : public simplify_type<const ::clang::DeclContext*> {}; 3660ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 367b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnertemplate<> struct simplify_type<const ::clang::DeclContext> { 3680ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner typedef ::clang::Decl SimpleType; 369b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static SimpleType &getSimplifiedValue(const ::clang::DeclContext &Val) { 370b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner return *::clang::DeclContext::ToDecl(&Val); 3710ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3720ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 373b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnertemplate<> struct simplify_type< ::clang::DeclContext> 374b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner : public simplify_type<const ::clang::DeclContext> {}; 3750ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 376b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner/// Implement cast_convert_val for DeclContext, so that we can dyn_cast from 377b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner/// a Decl class to DeclContext. 3780ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnertemplate<class FromTy> 379b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnerstruct cast_convert_val< ::clang::DeclContext,const FromTy,const FromTy> { 380b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static ::clang::DeclContext &doit(const FromTy &Val) { 381b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner return *::clang::DeclContext::FromDecl(&Val); 3820ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3830ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 3840ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnertemplate<class FromTy> 385b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnerstruct cast_convert_val< ::clang::DeclContext,FromTy,FromTy> 386b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner : public cast_convert_val< ::clang::DeclContext,const FromTy,const FromTy> 3870ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner {}; 3880ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 3890ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnertemplate<class FromTy> 390b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnerstruct cast_convert_val< ::clang::DeclContext,const FromTy*,const FromTy*> { 391b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner static ::clang::DeclContext *doit(const FromTy *Val) { 392b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner return ::clang::DeclContext::FromDecl(Val); 3930ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner } 3940ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner}; 3950ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattnertemplate<class FromTy> 396b048c9835969c4f7fe06264748be18ed4b442116Chris Lattnerstruct cast_convert_val< ::clang::DeclContext,FromTy*,FromTy*> 397b048c9835969c4f7fe06264748be18ed4b442116Chris Lattner : public cast_convert_val< ::clang::DeclContext,const FromTy*,const FromTy*> 3980ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner {}; 3990ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 4000ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner} // end namespace llvm 4010ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner 4020ed844b04ea4387caa4e1cf3dc375d269657536bChris Lattner#endif 403