IdentifierTable.h revision ea9c26b3dbd74a1497f5609ae6e19a85f42b6073
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- IdentifierTable.h - Hash table for identifier lookup ---*- C++ -*-===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 10c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner// This file defines the IdentifierInfo, IdentifierTable, and Selector 11c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner// interfaces. 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 15c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#ifndef LLVM_CLANG_BASIC_IDENTIFIERTABLE_H 16c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#define LLVM_CLANG_BASIC_IDENTIFIERTABLE_H 175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 181cd1b1e987f5e2f060d7972b13d83239b36d77d6Douglas Gregor#include "clang/Basic/OperatorKinds.h" 195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TokenKinds.h" 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/ADT/StringMap.h" 2168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff#include "llvm/ADT/SmallString.h" 2272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek#include "llvm/ADT/OwningPtr.h" 2393a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek#include "llvm/Bitcode/SerializationFwd.h" 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include <string> 259dc62f044a6ba21f503bd56607d94b32704e7945Chris Lattner#include <cassert> 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2785994260c41a54cab061a434ed378fc448333a4eChris Lattnernamespace llvm { 2885994260c41a54cab061a434ed378fc448333a4eChris Lattner template <typename T> struct DenseMapInfo; 2985994260c41a54cab061a434ed378fc448333a4eChris Lattner} 3029238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 32b8128140956c6f8f0ab143818775a81f4b4aa477Chris Lattner struct LangOptions; 337caeabd868d46cf4e68478c6e9136dae4e735d21Chris Lattner class IdentifierInfo; 34ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek class IdentifierTable; 357caeabd868d46cf4e68478c6e9136dae4e735d21Chris Lattner class SourceLocation; 362e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor class MultiKeywordSelector; // private class used by Selector 372e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor class DeclarationName; // AST class that stores declaration names 382e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 397caeabd868d46cf4e68478c6e9136dae4e735d21Chris Lattner /// IdentifierLocPair - A simple pair of identifier info and location. 407caeabd868d46cf4e68478c6e9136dae4e735d21Chris Lattner typedef std::pair<IdentifierInfo*, SourceLocation> IdentifierLocPair; 417caeabd868d46cf4e68478c6e9136dae4e735d21Chris Lattner 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// IdentifierInfo - One of these records is kept for each identifier that 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// is lexed. This contains information about whether the token was #define'd, 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// is a language keyword, or if it is a front-end token of some sort (e.g. a 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// variable or function name). The preprocessor keeps this information in a 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// set, and all tok::identifier tokens have a pointer to one of these. 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass IdentifierInfo { 498e748ab52395328f2905855b295a22e33dc800b2Ted Kremenek // Note: DON'T make TokenID a 'tok::TokenKind'; MSVC will treat it as a 508e748ab52395328f2905855b295a22e33dc800b2Ted Kremenek // signed char and TokenKinds > 127 won't be handled correctly. 518e748ab52395328f2905855b295a22e33dc800b2Ted Kremenek unsigned TokenID : 8; // Front-end token ID or tok::identifier. 525142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor // Objective-C keyword ('protocol' in '@protocol') or builtin (__builtin_inf). 535142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor // First NUM_OBJC_KEYWORDS values are for Objective-C, the remaining values 545142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor // are for builtins. 555142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor unsigned ObjCOrBuiltinID :10; 564365a7e46822700357a272d839ee2656d9603d5aChris Lattner bool HasMacro : 1; // True if there is a #define for this. 575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IsExtension : 1; // True if identifier is a lang extension. 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IsPoisoned : 1; // True if identifier is poisoned. 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool IsCPPOperatorKeyword : 1; // True if ident is a C++ operator keyword. 6072b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek // 9 bits left in 32-bit word. 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void *FETokenInfo; // Managed by the language front-end. 62ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek llvm::StringMapEntry<IdentifierInfo*> *Entry; 63ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo(const IdentifierInfo&); // NONCOPYABLE. 654365a7e46822700357a272d839ee2656d9603d5aChris Lattner void operator=(const IdentifierInfo&); // NONASSIGNABLE. 66ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 67ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek friend class IdentifierTable; 68ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 70ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek IdentifierInfo(); 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 72ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 7392e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner /// isStr - Return true if this is the identifier for the specified string. 7492e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner /// This is intended to be used for string literals only: II->isStr("foo"). 7592e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner template <std::size_t StrLen> 7692e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner bool isStr(const char (&Str)[StrLen]) const { 7792e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner return getLength() == StrLen-1 && !memcmp(getName(), Str, StrLen-1); 78845222ccd992282bf74b2fca53e7c3b84a81c098Chris Lattner } 79845222ccd992282bf74b2fca53e7c3b84a81c098Chris Lattner 803f128ad2691d299b96663da85a9e069c4081ea7cSteve Naroff /// getName - Return the actual string for this identifier. The returned 813f128ad2691d299b96663da85a9e069c4081ea7cSteve Naroff /// string is properly null terminated. 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 83ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek const char *getName() const { 84ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek if (Entry) return Entry->getKeyData(); 85ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek // The 'this' pointer really points to a 86ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek // std::pair<IdentifierInfo, const char*>, where internal pointer 87ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek // points to the external string data. 88ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek return ((std::pair<IdentifierInfo, const char*>*) this)->second + 4; 891f945f632ae993bbb9f9e69d908f7526924c1a88Chris Lattner } 901f945f632ae993bbb9f9e69d908f7526924c1a88Chris Lattner 911f945f632ae993bbb9f9e69d908f7526924c1a88Chris Lattner /// getLength - Efficiently return the length of this identifier info. 921f945f632ae993bbb9f9e69d908f7526924c1a88Chris Lattner /// 931f945f632ae993bbb9f9e69d908f7526924c1a88Chris Lattner unsigned getLength() const { 94ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek if (Entry) return Entry->getKeyLength(); 95ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek // The 'this' pointer really points to a 96ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek // std::pair<IdentifierInfo, const char*>, where internal pointer 97ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek // points to the external string data. 98ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek const char* p = ((std::pair<IdentifierInfo, const char*>*) this)->second; 99ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek return ((unsigned) p[0]) 100ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek | (((unsigned) p[1]) << 8) 101ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek | (((unsigned) p[2]) << 16) 102ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek | (((unsigned) p[3]) << 24); 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1059c46de446d18f4a28446cb798d4131bd05515699Chris Lattner /// hasMacroDefinition - Return true if this identifier is #defined to some 1069c46de446d18f4a28446cb798d4131bd05515699Chris Lattner /// other value. 1079c46de446d18f4a28446cb798d4131bd05515699Chris Lattner bool hasMacroDefinition() const { 1089c46de446d18f4a28446cb798d4131bd05515699Chris Lattner return HasMacro; 1099c46de446d18f4a28446cb798d4131bd05515699Chris Lattner } 110cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner void setHasMacroDefinition(bool Val) { HasMacro = Val; } 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// get/setTokenID - If this is a source-language token (e.g. 'for'), this API 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// can be used to cause the lexer to map identifiers to source-language 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens. 1158e748ab52395328f2905855b295a22e33dc800b2Ted Kremenek tok::TokenKind getTokenID() const { return (tok::TokenKind)TokenID; } 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setTokenID(tok::TokenKind ID) { TokenID = ID; } 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getPPKeywordID - Return the preprocessor keyword ID for this identifier. 1196d9a3e648d6bf6b347174152f191bd1377528f8cChris Lattner /// For example, "define" will return tok::pp_define. 120387b98d37e08f7aa9ddf23e067e1d27e39ce16f3Chris Lattner tok::PPKeywordKind getPPKeywordID() const; 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getObjCKeywordID - Return the Objective-C keyword ID for the this 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier. For example, 'class' will return tok::objc_class if ObjC is 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// enabled. 125ca63fa00786e51c207c829f4182f11a6c6b552beTed Kremenek tok::ObjCKeywordKind getObjCKeywordID() const { 1265142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor if (ObjCOrBuiltinID < tok::NUM_OBJC_KEYWORDS) 1275142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor return tok::ObjCKeywordKind(ObjCOrBuiltinID); 1285142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor else 1295142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor return tok::objc_not_keyword; 130ca63fa00786e51c207c829f4182f11a6c6b552beTed Kremenek } 1315142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor void setObjCKeywordID(tok::ObjCKeywordKind ID) { ObjCOrBuiltinID = ID; } 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getBuiltinID - Return a value indicating whether this is a builtin 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// function. 0 is not-built-in. 1 is builtin-for-some-nonprimary-target. 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 2+ are specific builtin functions. 1365142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor unsigned getBuiltinID() const { 1375142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor if (ObjCOrBuiltinID >= tok::NUM_OBJC_KEYWORDS) 1385142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor return ObjCOrBuiltinID - tok::NUM_OBJC_KEYWORDS; 1395142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor else 1405142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor return 0; 1415142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor } 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setBuiltinID(unsigned ID) { 1435142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor ObjCOrBuiltinID = ID + tok::NUM_OBJC_KEYWORDS; 144bf8cb361038c71a76f8ffa0f9986cebc43732e87Argyrios Kyrtzidis assert(ObjCOrBuiltinID - unsigned(tok::NUM_OBJC_KEYWORDS) == ID 1455142af38ed0dd2f592cbfa00fa6e2e14dd6cc516Douglas Gregor && "ID too large for field!"); 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// get/setExtension - Initialize information about whether or not this 1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// language token is an extension. This controls extension warnings, and is 1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// only valid if a custom token ID is set. 1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isExtensionToken() const { return IsExtension; } 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setIsExtensionToken(bool Val) { IsExtension = Val; } 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// setIsPoisoned - Mark this identifier as poisoned. After poisoning, the 1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Preprocessor will emit an error every time this token is used. 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setIsPoisoned(bool Value = true) { IsPoisoned = Value; } 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isPoisoned - Return true if this token has been poisoned. 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isPoisoned() const { return IsPoisoned; } 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isCPlusPlusOperatorKeyword/setIsCPlusPlusOperatorKeyword controls whether 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this identifier is a C++ alternate representation of an operator. 163c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenek void setIsCPlusPlusOperatorKeyword(bool Val = true) 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer { IsCPPOperatorKeyword = Val; } 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isCPlusPlusOperatorKeyword() const { return IsCPPOperatorKeyword; } 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getFETokenInfo/setFETokenInfo - The language front-end is allowed to 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// associate arbitrary metadata with this token. 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer template<typename T> 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); } 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setFETokenInfo(void *T) { FETokenInfo = T; } 17293a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek 17393a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek /// Emit - Serialize this IdentifierInfo to a bitstream. 17493a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek void Emit(llvm::Serializer& S) const; 17593a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek 17693a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek /// Read - Deserialize an IdentifierInfo object from a bitstream. 17793a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek void Read(llvm::Deserializer& D); 1785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 18072b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek/// IdentifierInfoLookup - An abstract class used by IdentifierTable that 18172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek/// provides an interface for for performing lookups from strings 18272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek/// (const char *) to IdentiferInfo objects. 18372b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenekclass IdentifierInfoLookup { 18472b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenekpublic: 18572b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek virtual ~IdentifierInfoLookup(); 18672b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 18772b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek /// get - Return the identifier token info for the specified named identifier. 18872b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek /// Unlike the version in IdentifierTable, this returns a pointer instead 18972b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek /// of a reference. If the pointer is NULL then the IdentifierInfo cannot 19072b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek /// be found. 19172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek virtual IdentifierInfo* get(const char *NameStart, const char *NameEnd) = 0; 19272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek}; 19372b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// IdentifierTable - This table implements an efficient mapping from strings to 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// IdentifierInfo nodes. It has no other purpose, but this is an 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// extremely performance-critical piece of the code, as each occurrance of 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// every identifier goes through here when lexed. 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass IdentifierTable { 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Shark shows that using MallocAllocator is *much* slower than using this 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // BumpPtrAllocator! 201ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek typedef llvm::StringMap<IdentifierInfo*, llvm::BumpPtrAllocator> HashTableTy; 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HashTableTy HashTable; 20372b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 20472b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek IdentifierInfoLookup* ExternalLookup; 2051cd1b1e987f5e2f060d7972b13d83239b36d77d6Douglas Gregor 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IdentifierTable ctor - Create the identifier table, populating it with 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// info about the language keywords for the language specified by LangOpts. 20972b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek IdentifierTable(const LangOptions &LangOpts, 21072b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek IdentifierInfoLookup* externalLookup = 0); 21172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 21272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 21372b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek return HashTable.getAllocator(); 21472b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek } 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// get - Return the identifier token info for the specified named identifier. 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo &get(const char *NameStart, const char *NameEnd) { 219ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek llvm::StringMapEntry<IdentifierInfo*> &Entry = 220ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek HashTable.GetOrCreateValue(NameStart, NameEnd, 0); 221ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 222ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek IdentifierInfo *II = Entry.getValue(); 223ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 224ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek if (!II) { 225ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek while (1) { 226ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek if (ExternalLookup) { 227ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek II = ExternalLookup->get(NameStart, NameEnd); 228ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek if (II) break; 229ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek } 230ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 231ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek void *Mem = getAllocator().Allocate<IdentifierInfo>(); 232ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek II = new (Mem) IdentifierInfo(); 233ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek break; 234ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek } 235ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek 236ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek Entry.setValue(II); 237ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek II->Entry = &Entry; 23872b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek } 23972b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 240ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek assert(II->Entry != 0); 241ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenek return *II; 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo &get(const char *Name) { 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return get(Name, Name+strlen(Name)); 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo &get(const std::string &Name) { 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Don't use c_str() here: no need to be null terminated. 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *NameBytes = &Name[0]; 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return get(NameBytes, NameBytes+Name.size()); 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2521cd1b1e987f5e2f060d7972b13d83239b36d77d6Douglas Gregor 253ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenekprivate: 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef HashTableTy::const_iterator iterator; 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer typedef HashTableTy::const_iterator const_iterator; 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer iterator begin() const { return HashTable.begin(); } 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer iterator end() const { return HashTable.end(); } 259ea9c26b3dbd74a1497f5609ae6e19a85f42b6073Ted Kremenekpublic: 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 261c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenek unsigned size() const { return HashTable.size(); } 262c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenek 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// PrintStats - Print some statistics to stderr that indicate how well the 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// hashing is doing. 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void PrintStats() const; 266bfa82c4c23ce96fdcf357a8f7ef70a9b71b69144Ted Kremenek 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void AddKeywords(const LangOptions &LangOpts); 268c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenek 26993a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek /// Emit - Serialize this IdentifierTable to a bitstream. This should 27093a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek /// be called AFTER objects that externally reference the identifiers in the 27193a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek /// table have been serialized. This is because only the identifiers that 27293a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek /// are actually referenced are serialized. 27393a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek void Emit(llvm::Serializer& S) const; 27493a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek 2750f84c0059cec39fd1c73ac05bc2864dca664e7f4Ted Kremenek /// Create - Deserialize an IdentifierTable from a bitstream. 276bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek static IdentifierTable* CreateAndRegister(llvm::Deserializer& D); 27793a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek 278c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenekprivate: 279c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenek /// This ctor is not intended to be used by anyone except for object 280c637e6b7afeebc6b4f751e4373715b6a8ea77272Ted Kremenek /// serialization. 28193a9ab4bdc607b12fdcf6aa5cf56950dd45ae0f5Ted Kremenek IdentifierTable(); 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 28429238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff/// Selector - This smart pointer class efficiently represents Objective-C 28529238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff/// method names. This class will either point to an IdentifierInfo or a 28629238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff/// MultiKeywordSelector (which is private). This enables us to optimize 287dee8ecc93825062eb441bfeb7a338d3f2c5ea3f0Nico Weber/// selectors that take no arguments and selectors that take 1 argument, which 28829238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff/// accounts for 78% of all selectors in Cocoa.h. 289bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroffclass Selector { 290bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff enum IdentifierInfoFlag { 2910e2dfd3963465d238e791eb8996e4d49fa47b615Chris Lattner // MultiKeywordSelector = 0. 292bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff ZeroArg = 0x1, 293bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff OneArg = 0x2, 294bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff ArgFlags = ZeroArg|OneArg 295bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff }; 296bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff uintptr_t InfoPtr; // a pointer to the MultiKeywordSelector or IdentifierInfo. 297bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff 298bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff Selector(IdentifierInfo *II, unsigned nArgs) { 299bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff InfoPtr = reinterpret_cast<uintptr_t>(II); 3000e2dfd3963465d238e791eb8996e4d49fa47b615Chris Lattner assert((InfoPtr & ArgFlags) == 0 &&"Insufficiently aligned IdentifierInfo"); 3010e2dfd3963465d238e791eb8996e4d49fa47b615Chris Lattner assert(nArgs < 2 && "nArgs not equal to 0/1"); 3020e2dfd3963465d238e791eb8996e4d49fa47b615Chris Lattner InfoPtr |= nArgs+1; 303bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 304bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff Selector(MultiKeywordSelector *SI) { 305bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff InfoPtr = reinterpret_cast<uintptr_t>(SI); 3060e2dfd3963465d238e791eb8996e4d49fa47b615Chris Lattner assert((InfoPtr & ArgFlags) == 0 &&"Insufficiently aligned IdentifierInfo"); 307bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 308bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek Selector(uintptr_t V) : InfoPtr(V) {} 30929238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroffpublic: 3102e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor friend class SelectorTable; // only the SelectorTable can create these 3112e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor friend class DeclarationName; // and the AST's DeclarationName. 3122e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 313c65b8a3e1f8da6117a2b9ba57afe8b7a2ec887ccTed Kremenek /// The default ctor should only be used when creating data structures that 314c65b8a3e1f8da6117a2b9ba57afe8b7a2ec887ccTed Kremenek /// will contain selectors. 315c65b8a3e1f8da6117a2b9ba57afe8b7a2ec887ccTed Kremenek Selector() : InfoPtr(0) {} 316c65b8a3e1f8da6117a2b9ba57afe8b7a2ec887ccTed Kremenek 317bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff IdentifierInfo *getAsIdentifierInfo() const { 3180e2dfd3963465d238e791eb8996e4d49fa47b615Chris Lattner if (getIdentifierInfoFlag()) 319bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return reinterpret_cast<IdentifierInfo *>(InfoPtr & ~ArgFlags); 320bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return 0; 321bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 322bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff unsigned getIdentifierInfoFlag() const { 323bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return InfoPtr & ArgFlags; 324bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 325bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff /// operator==/!= - Indicate whether the specified selectors are identical. 32697b7f26a92d87e514530a5b652460190ce48c974Ted Kremenek bool operator==(Selector RHS) const { 327bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return InfoPtr == RHS.InfoPtr; 328bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 32997b7f26a92d87e514530a5b652460190ce48c974Ted Kremenek bool operator!=(Selector RHS) const { 330bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return InfoPtr != RHS.InfoPtr; 331bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 332bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff void *getAsOpaquePtr() const { 333bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return reinterpret_cast<void*>(InfoPtr); 334bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 335bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff // Predicates to identify the selector type. 336bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff bool isKeywordSelector() const { 337bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return getIdentifierInfoFlag() != ZeroArg; 338bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 339bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff bool isUnarySelector() const { 340bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff return getIdentifierInfoFlag() == ZeroArg; 341bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff } 3425b6b72f53ad164497cf62484b60cdbb4361f1978Steve Naroff unsigned getNumArgs() const; 343f836e3fea2c77fdbb18170fb313ee0d45551320bChris Lattner IdentifierInfo *getIdentifierInfoForSlot(unsigned argIndex) const; 3445b6b72f53ad164497cf62484b60cdbb4361f1978Steve Naroff 345077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner /// getAsString - Derive the full selector name (e.g. "foo:bar:") and return 346077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner /// it as an std::string. 347077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string getAsString() const; 34885994260c41a54cab061a434ed378fc448333a4eChris Lattner 34985994260c41a54cab061a434ed378fc448333a4eChris Lattner static Selector getEmptyMarker() { 35085994260c41a54cab061a434ed378fc448333a4eChris Lattner return Selector(uintptr_t(-1)); 35185994260c41a54cab061a434ed378fc448333a4eChris Lattner } 35285994260c41a54cab061a434ed378fc448333a4eChris Lattner static Selector getTombstoneMarker() { 35385994260c41a54cab061a434ed378fc448333a4eChris Lattner return Selector(uintptr_t(-2)); 35485994260c41a54cab061a434ed378fc448333a4eChris Lattner } 355bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek 356bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek // Emit - Emit a selector to bitcode. 357bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek void Emit(llvm::Serializer& S) const; 358bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek 359bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek // ReadVal - Read a selector from bitcode. 360bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek static Selector ReadVal(llvm::Deserializer& D); 361bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff}; 362bcfb06ac6da1aa3c74ac1ef7a49c2807522366e7Steve Naroff 36329238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff/// SelectorTable - This table allows us to fully hide how we implement 36429238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff/// multi-keyword caching. 36529238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroffclass SelectorTable { 36629238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff void *Impl; // Actually a FoldingSet<MultiKeywordSelector>* 36729238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable(const SelectorTable&); // DISABLED: DO NOT IMPLEMENT 36829238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff void operator=(const SelectorTable&); // DISABLED: DO NOT IMPLEMENT 36929238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroffpublic: 37029238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable(); 37129238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff ~SelectorTable(); 37229238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff 373ff38491c18b060526d754765b952f4a497a89416Chris Lattner /// getSelector - This can create any sort of selector. NumArgs indicates 374ff38491c18b060526d754765b952f4a497a89416Chris Lattner /// whether this is a no argument selector "foo", a single argument selector 375ff38491c18b060526d754765b952f4a497a89416Chris Lattner /// "foo:" or multi-argument "foo:bar:". 376ff38491c18b060526d754765b952f4a497a89416Chris Lattner Selector getSelector(unsigned NumArgs, IdentifierInfo **IIV); 377ff38491c18b060526d754765b952f4a497a89416Chris Lattner 378ff38491c18b060526d754765b952f4a497a89416Chris Lattner Selector getUnarySelector(IdentifierInfo *ID) { 379ff38491c18b060526d754765b952f4a497a89416Chris Lattner return Selector(ID, 1); 380ff38491c18b060526d754765b952f4a497a89416Chris Lattner } 381ff38491c18b060526d754765b952f4a497a89416Chris Lattner Selector getNullarySelector(IdentifierInfo *ID) { 382ff38491c18b060526d754765b952f4a497a89416Chris Lattner return Selector(ID, 0); 383ff38491c18b060526d754765b952f4a497a89416Chris Lattner } 384bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek 385bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek // Emit - Emit a SelectorTable to bitcode. 386bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek void Emit(llvm::Serializer& S) const; 387bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek 388bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek // Create - Reconstitute a SelectorTable from bitcode. 389bdbb285aed1bb1e20090a16929f4c1da33d2d5c5Ted Kremenek static SelectorTable* CreateAndRegister(llvm::Deserializer& D); 39029238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff}; 39129238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff 392e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor/// DeclarationNameExtra - Common base of the MultiKeywordSelector, 393e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor/// CXXSpecialName, and CXXOperatorIdName classes, all of which are 394e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor/// private classes that describe different kinds of names. 3952e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregorclass DeclarationNameExtra { 3962e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregorpublic: 3972e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor /// ExtraKind - The kind of "extra" information stored in the 3982e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor /// DeclarationName. See @c ExtraKindOrNumArgs for an explanation of 3992e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor /// how these enumerator values are used. 4002e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor enum ExtraKind { 4012e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor CXXConstructor = 0, 4022e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor CXXDestructor, 4032e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor CXXConversionFunction, 404e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \ 405e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor CXXOperator##Name, 406e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor#include "clang/Basic/OperatorKinds.def" 4072e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor NUM_EXTRA_KINDS 4082e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor }; 4095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 410e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor /// ExtraKindOrNumArgs - Either the kind of C++ special name or 411e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor /// operator-id (if the value is one of the CXX* enumerators of 412e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor /// ExtraKind), in which case the DeclarationNameExtra is also a 413e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor /// CXXSpecialName (for CXXConstructor, CXXDestructor, or 414e94ca9e4371c022329270436b3dd77adc4ddfa8fDouglas Gregor /// CXXConversionFunction) or CXXOperatorIdName, otherwise it is 4152e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor /// NUM_EXTRA_KINDS+NumArgs, where NumArgs is the number of 4162e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor /// arguments in the Objective-C selector, in which case the 4172e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor /// DeclarationNameExtra is also a MultiKeywordSelector. 4182e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor unsigned ExtraKindOrNumArgs; 4192e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor}; 4202e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 4212e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor} // end namespace clang 4224365a7e46822700357a272d839ee2656d9603d5aChris Lattner 4232e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregornamespace llvm { 4244365a7e46822700357a272d839ee2656d9603d5aChris Lattner/// Define DenseMapInfo so that Selectors can be used as keys in DenseMap and 4254365a7e46822700357a272d839ee2656d9603d5aChris Lattner/// DenseSets. 42685994260c41a54cab061a434ed378fc448333a4eChris Lattnertemplate <> 42785994260c41a54cab061a434ed378fc448333a4eChris Lattnerstruct DenseMapInfo<clang::Selector> { 42885994260c41a54cab061a434ed378fc448333a4eChris Lattner static inline clang::Selector getEmptyKey() { 42985994260c41a54cab061a434ed378fc448333a4eChris Lattner return clang::Selector::getEmptyMarker(); 43085994260c41a54cab061a434ed378fc448333a4eChris Lattner } 43185994260c41a54cab061a434ed378fc448333a4eChris Lattner static inline clang::Selector getTombstoneKey() { 43285994260c41a54cab061a434ed378fc448333a4eChris Lattner return clang::Selector::getTombstoneMarker(); 43385994260c41a54cab061a434ed378fc448333a4eChris Lattner } 43485994260c41a54cab061a434ed378fc448333a4eChris Lattner 43585994260c41a54cab061a434ed378fc448333a4eChris Lattner static unsigned getHashValue(clang::Selector S); 43685994260c41a54cab061a434ed378fc448333a4eChris Lattner 43785994260c41a54cab061a434ed378fc448333a4eChris Lattner static bool isEqual(clang::Selector LHS, clang::Selector RHS) { 43885994260c41a54cab061a434ed378fc448333a4eChris Lattner return LHS == RHS; 43985994260c41a54cab061a434ed378fc448333a4eChris Lattner } 44085994260c41a54cab061a434ed378fc448333a4eChris Lattner 44185994260c41a54cab061a434ed378fc448333a4eChris Lattner static bool isPod() { return true; } 44285994260c41a54cab061a434ed378fc448333a4eChris Lattner}; 44385994260c41a54cab061a434ed378fc448333a4eChris Lattner 4442e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor} // end namespace llvm 4455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 446