15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Preprocessor.h - C Language Family Preprocessor --------*- 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// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file defines the Preprocessor interface. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#ifndef LLVM_CLANG_LEX_PREPROCESSOR_H 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#define LLVM_CLANG_LEX_PREPROCESSOR_H 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 171b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 18d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer#include "clang/Basic/Diagnostic.h" 19c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#include "clang/Basic/IdentifierTable.h" 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceLocation.h" 2130a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Lex/Lexer.h" 2230a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Lex/MacroInfo.h" 23bc3f628815b3841dc99109e7f67f9afa7793bc94Lawrence Crowl#include "clang/Lex/ModuleMap.h" 2430a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Lex/PPCallbacks.h" 2530a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Lex/PTHLexer.h" 2630a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Lex/PTHManager.h" 2730a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Lex/TokenLexer.h" 2830a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/ArrayRef.h" 29cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner#include "llvm/ADT/DenseMap.h" 304f32786ac45210143654390177105eb749b614e9Ted Kremenek#include "llvm/ADT/IntrusiveRefCntPtr.h" 31caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek#include "llvm/ADT/OwningPtr.h" 3230a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/SmallPtrSet.h" 33f4d5eb4866a27d497f0bb75b12c2ffd48ad4d9c0Benjamin Kramer#include "llvm/ADT/SmallVector.h" 340ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek#include "llvm/Support/Allocator.h" 352e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor#include <vector> 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 378fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramernamespace llvm { 388fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer template<unsigned InternalLen> class SmallString; 398fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer} 408fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass SourceManager; 4488a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregorclass ExternalPreprocessorSource; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileManager; 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileEntry; 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass HeaderSearch; 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaNamespace; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaHandler; 502e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ScratchBuffer; 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass TargetInfo; 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PPCallbacks; 54f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorclass CodeCompletionHandler; 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass DirectoryLookup; 5694dc8f640ebea52241412512ed48601626edbc58Douglas Gregorclass PreprocessingRecord; 576aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregorclass ModuleLoader; 5836a16498ff911a218f26c7955376bbe99ddb16dfDouglas Gregorclass PreprocessorOptions; 59ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 601952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko/// \brief Stores token information for comparing actual tokens with 611952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko/// predefined values. Only handles simple tokens and identifiers. 621952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenkoclass TokenValue { 631952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko tok::TokenKind Kind; 641952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko IdentifierInfo *II; 651952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko 661952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenkopublic: 671952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko TokenValue(tok::TokenKind Kind) : Kind(Kind), II(0) { 681952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko assert(Kind != tok::raw_identifier && "Raw identifiers are not supported."); 691952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko assert(Kind != tok::identifier && 701952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko "Identifiers should be created by TokenValue(IdentifierInfo *)"); 711952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko assert(!tok::isLiteral(Kind) && "Literals are not supported."); 721952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko assert(!tok::isAnnotation(Kind) && "Annotations are not supported."); 731952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko } 741952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko TokenValue(IdentifierInfo *II) : Kind(tok::identifier), II(II) {} 751952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko bool operator==(const Token &Tok) const { 761952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko return Tok.getKind() == Kind && 771952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko (!II || II == Tok.getIdentifierInfo()); 781952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko } 791952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko}; 801952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko 81e5956bd2730c051835f9acd9e957c5d79f99e7c3Chris Lattner/// Preprocessor - This object engages in a tight little dance with the lexer to 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// efficiently preprocess tokens. Lexers know only about tokens within a 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// single source file, and don't know anything about preprocessor-level issues 8458bf98725b6d4588338e191d2ab981b104471dabJames Dennett/// like the \#include stack, token expansion, etc. 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 86c93dc7889644293e318e19d82830ea2acc45b678Dylan Noblesmithclass Preprocessor : public RefCountedBase<Preprocessor> { 87cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko IntrusiveRefCntPtr<PreprocessorOptions> PPOpts; 88d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer DiagnosticsEngine *Diags; 894e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie LangOptions &LangOpts; 90998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo *Target; 915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &FileMgr; 925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &SourceMgr; 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuffer *ScratchBuf; 945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &HeaderInfo; 956aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &TheModuleLoader; 961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9788a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor /// \brief External source of macros. 9888a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalPreprocessorSource *ExternalSource; 99a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 100ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1016137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// PTH - An optional PTHManager object used for getting tokens from 1026137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// a token cache rather than lexing the original source file. 1036f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<PTHManager> PTH; 1041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1050ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// BP - A BumpPtrAllocator object used to quickly allocate and release 1060ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// objects internal to the Preprocessor. 1070ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek llvm::BumpPtrAllocator BP; 1081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers for builtin macros and other builtins. 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__LINE__, *Ident__FILE__; // __LINE__, __FILE__ 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__DATE__, *Ident__TIME__; // __DATE__, __TIME__ 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__INCLUDE_LEVEL__; // __INCLUDE_LEVEL__ 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__BASE_FILE__; // __BASE_FILE__ 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__TIMESTAMP__; // __TIMESTAMP__ 115c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner IdentifierInfo *Ident__COUNTER__; // __COUNTER__ 1161ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall IdentifierInfo *Ident_Pragma, *Ident__pragma; // _Pragma, __pragma 1171ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall IdentifierInfo *Ident__VA_ARGS__; // __VA_ARGS__ 118148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_feature; // __has_feature 119c1b5fa41f09512c74030b9a2a0d1564535e22a76Peter Collingbourne IdentifierInfo *Ident__has_extension; // __has_extension 120148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_builtin; // __has_builtin 121cae5095c116c29a4e52c91fa0ad88df09dd2b45fAnders Carlsson IdentifierInfo *Ident__has_attribute; // __has_attribute 12292bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include; // __has_include 12392bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include_next; // __has_include_next 124d768150ef57f617c8d9fef48f3c92e8f21698024Ted Kremenek IdentifierInfo *Ident__has_warning; // __has_warning 125b09de5177ee8101818a59dcd0038c75b190a2509Douglas Gregor IdentifierInfo *Ident__building_module; // __building_module 126b09de5177ee8101818a59dcd0038c75b190a2509Douglas Gregor IdentifierInfo *Ident__MODULE__; // __MODULE__ 1271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DATELoc, TIMELoc; 129c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned CounterValue; // Next __COUNTER__ value. 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum { 13258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// MaxIncludeStackDepth - Maximum depth of \#includes. 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxAllowedIncludeStackDepth = 200 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that is set before the preprocessor begins. 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepComments : 1; 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepMacroComments : 1; 139f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman bool SuppressIncludeNotFoundError : 1; 140ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that changes while the preprocessor runs: 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool InMacroArgs : 1; // True if parsing fn macro invocation args. 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1445814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar /// Whether the preprocessor owns the header search object. 1455814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar bool OwnsHeaderSearch : 1; 1465814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar 1471d9c54df56391ac4740db27d551782e81189cb51Chris Lattner /// DisableMacroExpansion - True if macro expansion is disabled. 1481d9c54df56391ac4740db27d551782e81189cb51Chris Lattner bool DisableMacroExpansion : 1; 1491d9c54df56391ac4740db27d551782e81189cb51Chris Lattner 1508c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// MacroExpansionInDirectivesOverride - Temporarily disables 1518c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// DisableMacroExpansion (i.e. enables expansion) when parsing preprocessor 1528c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// directives. 1538c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie bool MacroExpansionInDirectivesOverride : 1; 1548c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie 1558c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie class ResetMacroExpansionHelper; 1568c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie 15788a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor /// \brief Whether we have already loaded macros from the external source. 15888a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor mutable bool ReadMacrosFromExternalSource : 1; 159a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 1606fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose /// \brief True if pragmas are enabled. 1616fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose bool PragmasEnabled : 1; 1626fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose 16374c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose /// \brief True if the current build action is a preprocessing action. 16474c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose bool PreprocessedOutput : 1; 16574c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose 16631672b1745195d709b641f1c0f44e203742fa73bAaron Ballman /// \brief True if we are currently preprocessing a #if or #elif directive 16731672b1745195d709b641f1c0f44e203742fa73bAaron Ballman bool ParsingIfOrElifDirective; 16831672b1745195d709b641f1c0f44e203742fa73bAaron Ballman 16914e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis /// \brief True if we are pre-expanding macro arguments. 17014e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis bool InMacroArgPreExpansion; 17114e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 1725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers - This is mapping/lookup information for all identifiers in 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the program, including program keywords. 174c3222091e1ffa35d0264ca6b680a88c9dc84ede2Daniel Dunbar mutable IdentifierTable Identifiers; 1751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17668d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// Selectors - This table contains all the selectors in the program. Unlike 17768d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// IdentifierTable above, this table *isn't* populated by the preprocessor. 1789e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// It is declared/expanded here because it's role/lifetime is 17968d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// conceptually similar the IdentifierTable. In addition, the current control 1801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// flow (in clang::ParseAST()), make it convenient to put here. 18168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// FIXME: Make sure the lifetime of Identifiers/Selectors *isn't* tied to 182083abdf67f157e9d2ab5a8c9d5e71240479d3c99Sebastian Redl /// the lifetime of the preprocessor. 18329238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable Selectors; 1842e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 1851b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner /// BuiltinInfo - Information about builtins. 1861b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context BuiltinInfo; 1871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// PragmaHandlers - This tracks all of the pragmas that the client registered 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// with this preprocessor. 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *PragmaHandlers; 1911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Tracks all of the comment handlers that the client registered 1932e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// with this preprocessor. 1942e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor std::vector<CommentHandler *> CommentHandlers; 1951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 196e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// \brief True if we want to ignore EOF token and continue later on (thus 197e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// avoid tearing the Lexer and etc. down). 198e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool IncrementalProcessing; 199e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 200f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief The code-completion handler. 201f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeCompletionHandler *CodeComplete; 202ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2032968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \brief The file that we're performing code-completion for, if any. 2042968442603b029949246467253eeac8139a5b6d8Douglas Gregor const FileEntry *CodeCompletionFile; 2052968442603b029949246467253eeac8139a5b6d8Douglas Gregor 2067d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The offset in file for the code-completion point. 2077d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis unsigned CodeCompletionOffset; 2087d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 2097d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The location for the code-completion point. This gets instantiated 21058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// when the CodeCompletionFile gets \#include'ed for preprocessing. 2117d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation CodeCompletionLoc; 2127d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 2137d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The start location for the file of the code-completion point. 21458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 21558bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// This gets instantiated when the CodeCompletionFile gets \#include'ed 2167d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// for preprocessing. 2177d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation CodeCompletionFileLoc; 2187d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 219c13a34b690d2dc2a03c2fea75a0a1438636c19ceDouglas Gregor /// \brief The source location of the 'import' contextual keyword we just 220c13a34b690d2dc2a03c2fea75a0a1438636c19ceDouglas Gregor /// lexed, if any. 221b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor SourceLocation ModuleImportLoc; 2228dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 223b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// \brief The module import path that we're currently processing. 224cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> ModuleImportPath; 225b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor 226b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// \brief Whether the module import expectes an identifier next. Otherwise, 227b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// it expects a '.' or ';'. 228b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor bool ModuleImportExpectsIdentifier; 229b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor 2308dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// \brief The source location of the currently-active 2318dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// #pragma clang arc_cf_code_audited begin. 2328dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation PragmaARCCFCodeAuditedLoc; 233ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2347d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief True if we hit the code-completion point. 2357d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis bool CodeCompletionReached; 2367d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 237f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// \brief The number of bytes that we will initially skip when entering the 238f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// main file, which is used when loading a precompiled preamble, along 239f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// with a flag that indicates whether skipping this number of bytes will 240f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// place the lexer at the start of a line. 241f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor std::pair<unsigned, bool> SkipMainFilePreamble; 242ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLexer - This is the current top of the stack that we're lexing from if 2449c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding a macro and we are lexing directly from source code. 2459c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 2466f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<Lexer> CurLexer; 2471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2489c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer - This is the current top of stack that we're lexing from if 2499c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding from a macro and we are lexing from a PTH cache. 2509c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 2516f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<PTHLexer> CurPTHLexer; 2521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2539c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPPLexer - This is the current top of the stack what we're lexing from 2549c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// if not expanding a macro. This is an alias for either CurLexer or 2559c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer. 25623f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner PreprocessorLexer *CurPPLexer; 257ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLookup - The DirectoryLookup structure used to find the current 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 26058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// implement \#include_next and find directory-specific properties. 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDirLookup; 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2636cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurTokenLexer - This is the current macro we are expanding, if we are 2646cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// expanding a macro. One of CurLexer and CurTokenLexer must be null. 2656f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<TokenLexer> CurTokenLexer; 2661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 267b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor /// \brief The kind of lexer we're currently working with. 268ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie enum CurLexerKind { 269ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_Lexer, 270ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_PTHLexer, 271ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_TokenLexer, 272b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CLK_CachingLexer, 273b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CLK_LexAfterModuleImport 274b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor } CurLexerKind; 275b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncludeMacroStack - This keeps track of the stack of files currently 27758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#included, and macros currently being expanded from, not counting 2786cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurLexer/CurTokenLexer. 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct IncludeStackInfo { 280b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor enum CurLexerKind CurLexerKind; 2819c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek Lexer *TheLexer; 2829c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PTHLexer *ThePTHLexer; 2839c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer *ThePPLexer; 2841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TokenLexer *TheTokenLexer; 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *TheDirLookup; 2869c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 287ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IncludeStackInfo(enum CurLexerKind K, Lexer *L, PTHLexer* P, 288b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor PreprocessorLexer* PPL, 2899c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TokenLexer* TL, const DirectoryLookup *D) 290ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : CurLexerKind(K), TheLexer(L), ThePTHLexer(P), ThePPLexer(PPL), 291b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor TheTokenLexer(TL), TheDirLookup(D) {} 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::vector<IncludeStackInfo> IncludeMacroStack; 2941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Callbacks - These are actions invoked when some preprocessor activity is 29658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// encountered (e.g. a file is \#included, etc). 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *Callbacks; 2981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 29966c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis struct MacroExpandsInfo { 30066c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis Token Tok; 301c515978bd3a703aa733f846a0094ffa84d149074Argyrios Kyrtzidis MacroDirective *MD; 30266c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis SourceRange Range; 303c515978bd3a703aa733f846a0094ffa84d149074Argyrios Kyrtzidis MacroExpandsInfo(Token Tok, MacroDirective *MD, SourceRange Range) 304c515978bd3a703aa733f846a0094ffa84d149074Argyrios Kyrtzidis : Tok(Tok), MD(MD), Range(Range) { } 30566c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis }; 30666c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis SmallVector<MacroExpandsInfo, 2> DelayedMacroExpandsCallbacks; 30766c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis 3088a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// Macros - For each IdentifierInfo that was associated with a macro, we 3098a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// keep a mapping to the history of all macro definitions and #undefs in 3108a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// the reverse order (the latest one is in the head of the list). 3119818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis llvm::DenseMap<const IdentifierInfo*, MacroDirective*> Macros; 312c12906ee78e006df6a71acf52ca9dd3171ddbf07Douglas Gregor friend class ASTReader; 313c12906ee78e006df6a71acf52ca9dd3171ddbf07Douglas Gregor 3140827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// \brief Macros that we want to warn because they are not used at the end 3150827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// of the translation unit; we store just their SourceLocations instead 3160827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// something like MacroInfo*. The benefit of this is that when we are 3170827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// deserializing from PCH, we don't need to deserialize identifier & macros 3180827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// just so that we can report that they are unused, we just warn using 3190827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// the SourceLocations of this set (that will be filled by the ASTReader). 3200827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// We are using SmallPtrSet instead of a vector for faster removal. 3210827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis typedef llvm::SmallPtrSet<SourceLocation, 32> WarnUnusedMacroLocsTy; 3220827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis WarnUnusedMacroLocsTy WarnUnusedMacroLocs; 3230827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis 32423f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner /// MacroArgCache - This is a "freelist" of MacroArg objects that can be 32523f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner /// reused for quick allocation. 32623f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner MacroArgs *MacroArgCache; 32723f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner friend class MacroArgs; 328ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 329ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// PragmaPushMacroInfo - For each IdentifierInfo used in a #pragma 330ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// push_macro directive, we keep a MacroInfo stack used to restore 331f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner /// previous macro value. 332f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> > PragmaPushMacroInfo; 3331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Various statistics we track for performance analysis. 3355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumDirectives, NumIncluded, NumDefined, NumUndefined, NumPragma; 3365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumIf, NumElse, NumEndif; 3375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumEnteredSourceFiles, MaxIncludeStackDepth; 3385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumMacroExpanded, NumFnMacroExpanded, NumBuiltinMacroExpanded; 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumFastMacroExpanded, NumTokenPaste, NumFastTokenPaste; 3405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumSkipped; 3411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 342aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// Predefines - This string is the predefined macros that preprocessor 343aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// should use from the command line etc. 344aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner std::string Predefines; 3451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34695d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis /// \brief The file ID for the preprocessor predefines. 34795d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis FileID PredefinesFileID; 34895d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis 3496cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// TokenLexerCache - Cache macro expanders to reduce malloc traffic. 3506cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner enum { TokenLexerCacheSize = 8 }; 3516cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner unsigned NumCachedTokenLexers; 3526cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner TokenLexer *TokenLexerCache[TokenLexerCacheSize]; 3539e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis 3545b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// \brief Keeps macro expanded tokens for TokenLexers. 3555b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis // 3565b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// Works like a stack; a TokenLexer adds the macro expanded tokens that is 3575b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// going to lex in the cache and when it finishes the tokens are removed 3585b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// from the end of the cache. 359686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<Token, 16> MacroExpandedTokens; 3605b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis std::vector<std::pair<TokenLexer *, size_t> > MacroExpandingLexersStack; 3615b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis 3629e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// \brief A record of the macro definitions and expansions that 363ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// occurred during preprocessing. 36494dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// 36594dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// This is an optional side structure that can be enabled with 36694dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// \c createPreprocessingRecord() prior to preprocessing. 367b9e1b75772db2c7db566c6034ba90a07f22e35ebDouglas Gregor PreprocessingRecord *Record; 368ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 369e671e1bc73615eda155059a772266ed2882d758cChris Lattnerprivate: // Cached tokens state. 370686775deca8b8685eb90801495880e3abdd844c2Chris Lattner typedef SmallVector<Token, 1> CachedTokensTy; 37103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 37203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedTokens - Cached tokens are stored here when we do backtracking or 37303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// lookahead. They are "lexed" by the CachingLex() method. 37403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy CachedTokens; 37503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 37603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedLexPos - The position of the cached token that CachingLex() should 37703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// "lex" next. If it points beyond the CachedTokens vector, it means that 37803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// a normal Lex() should be invoked. 37903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy::size_type CachedLexPos; 38003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 381a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// BacktrackPositions - Stack of backtrack positions, allowing nested 382a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// backtracks. The EnableBacktrackAtThisPos() method pushes a position to 383a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// indicate where CachedLexPos should be set when the BackTrack() method is 384a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// invoked (at which point the last position is popped). 385a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis std::vector<CachedTokensTy::size_type> BacktrackPositions; 38603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 387af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek struct MacroInfoChain { 388af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfo MI; 389af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfoChain *Next; 3909714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek MacroInfoChain *Prev; 391af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek }; 392af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek 393af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek /// MacroInfos are managed as a chain for easy disposal. This is the head 394af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek /// of that list. 395af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfoChain *MIChainHead; 396af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek 3979714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek /// MICache - A "freelist" of MacroInfo objects that can be reused for quick 3989714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek /// allocation. 3999714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek MacroInfoChain *MICache; 4009714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek 4013e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis struct DeserializedMacroInfoChain { 4023e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis MacroInfo MI; 4033e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis unsigned OwningModuleID; // MUST be immediately after the MacroInfo object 4043e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis // so it can be accessed by MacroInfo::getOwningModuleID(). 4053e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis DeserializedMacroInfoChain *Next; 4063e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis }; 4073e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis DeserializedMacroInfoChain *DeserialMIChainHead; 4083e25b990f1e2ba2a9a63dde5fd111492a7f6194aArgyrios Kyrtzidis 4095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 410cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko Preprocessor(IntrusiveRefCntPtr<PreprocessorOptions> PPOpts, 41136a16498ff911a218f26c7955376bbe99ddb16dfDouglas Gregor DiagnosticsEngine &diags, LangOptions &opts, 412998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo *target, 41372b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek SourceManager &SM, HeaderSearch &Headers, 4146aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &TheModuleLoader, 4155814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar IdentifierInfoLookup *IILookup = 0, 416998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor bool OwnsHeaderSearch = false, 417e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool DelayInitialization = false, 418e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool IncrProcessing = false); 41972b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 4205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ~Preprocessor(); 4215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 422998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// \brief Initialize the preprocessor, if the constructor did not already 423998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// perform the initialization. 424998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// 425998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// \param Target Information about the target. 426998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor void Initialize(const TargetInfo &Target); 427ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 428a71a7d8a1ce4474e7bdb680658fb58b6caf391d3Douglas Gregor /// \brief Retrieve the preprocessor options used to initialize this 429a71a7d8a1ce4474e7bdb680658fb58b6caf391d3Douglas Gregor /// preprocessor. 430a71a7d8a1ce4474e7bdb680658fb58b6caf391d3Douglas Gregor PreprocessorOptions &getPreprocessorOpts() const { return *PPOpts; } 431a71a7d8a1ce4474e7bdb680658fb58b6caf391d3Douglas Gregor 432d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &getDiagnostics() const { return *Diags; } 433d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie void setDiagnostics(DiagnosticsEngine &D) { Diags = &D; } 4347c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner 4354e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &getLangOpts() const { return LangOpts; } 436998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo &getTargetInfo() const { return *Target; } 4375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &getFileManager() const { return FileMgr; } 4385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &getSourceManager() const { return SourceMgr; } 4395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &getHeaderSearchInfo() const { return HeaderInfo; } 4405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierTable &getIdentifierTable() { return Identifiers; } 44229238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable &getSelectorTable() { return Selectors; } 4431b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context &getBuiltinInfo() { return BuiltinInfo; } 44432fca722dd974b8202d0fb9c71b6c185c0767da6Chris Lattner llvm::BumpPtrAllocator &getPreprocessorAllocator() { return BP; } 4451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 446337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek void setPTHManager(PTHManager* pm); 4471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 448880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek PTHManager *getPTHManager() { return PTH.get(); } 4492e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 45088a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor void setExternalSource(ExternalPreprocessorSource *Source) { 45188a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalSource = Source; 45288a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor } 453a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 45488a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalPreprocessorSource *getExternalSource() const { 45588a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor return ExternalSource; 45688a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor } 457a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 4586aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor /// \brief Retrieve the module loader associated with this preprocessor. 4596aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &getModuleLoader() const { return TheModuleLoader; } 460ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 4613b7deda7137e62810a810ce25b062927a9fc7c71Argyrios Kyrtzidis bool hadModuleLoaderFatalFailure() const { 4623b7deda7137e62810a810ce25b062927a9fc7c71Argyrios Kyrtzidis return TheModuleLoader.HadFatalFailure; 4633b7deda7137e62810a810ce25b062927a9fc7c71Argyrios Kyrtzidis } 4643b7deda7137e62810a810ce25b062927a9fc7c71Argyrios Kyrtzidis 46531672b1745195d709b641f1c0f44e203742fa73bAaron Ballman /// \brief True if we are currently preprocessing a #if or #elif directive 46631672b1745195d709b641f1c0f44e203742fa73bAaron Ballman bool isParsingIfOrElifDirective() const { 46731672b1745195d709b641f1c0f44e203742fa73bAaron Ballman return ParsingIfOrElifDirective; 46831672b1745195d709b641f1c0f44e203742fa73bAaron Ballman } 46931672b1745195d709b641f1c0f44e203742fa73bAaron Ballman 4705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SetCommentRetentionState - Control whether or not the preprocessor retains 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// comments in output. 4725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SetCommentRetentionState(bool KeepComments, bool KeepMacroComments) { 4735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepComments = KeepComments | KeepMacroComments; 4745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepMacroComments = KeepMacroComments; 4755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool getCommentRetentionState() const { return KeepComments; } 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4796fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose void setPragmasEnabled(bool Enabled) { PragmasEnabled = Enabled; } 4806fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose bool getPragmasEnabled() const { return PragmasEnabled; } 4816fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose 482f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman void SetSuppressIncludeNotFoundError(bool Suppress) { 483f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman SuppressIncludeNotFoundError = Suppress; 484f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman } 485f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman 486f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman bool GetSuppressIncludeNotFoundError() { 487f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman return SuppressIncludeNotFoundError; 488f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman } 489f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman 49074c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose /// Sets whether the preprocessor is responsible for producing output or if 49174c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose /// it is producing tokens to be consumed by Parse and Sema. 49274c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose void setPreprocessedOutput(bool IsPreprocessedOutput) { 49374c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose PreprocessedOutput = IsPreprocessedOutput; 49474c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose } 49574c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose 49674c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose /// Returns true if the preprocessor is responsible for generating output, 49774c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose /// false if it is producing tokens to be consumed by Parse and Sema. 49874c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose bool isPreprocessedOutput() const { return PreprocessedOutput; } 49974c2498bb9e339345ee32bdd095e76157cec3b86Jordan Rose 5005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isCurrentLexer - Return true if we are lexing directly from the specified 5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer. 5027062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek bool isCurrentLexer(const PreprocessorLexer *L) const { 5037062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek return CurPPLexer == L; 5045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 506a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// getCurrentLexer - Return the current lexer being lexed from. Note 507a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// that this ignores any potentially active macro expansions and _Pragma 508a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// expansions going on at the time. 509a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson PreprocessorLexer *getCurrentLexer() const { return CurPPLexer; } 510a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 511321c2688198f6f1a4086964e505f239683423cecChris Lattner /// getCurrentFileLexer - Return the current file lexer being lexed from. 512321c2688198f6f1a4086964e505f239683423cecChris Lattner /// Note that this ignores any potentially active macro expansions and _Pragma 5135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansions going on at the time. 51468e48e4a81767997ef0231e47eca4f665102c95eTed Kremenek PreprocessorLexer *getCurrentFileLexer() const; 5151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 51695d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis /// \brief Returns the file ID for the preprocessor predefines. 5179484c1dcf084452228aae439edcd00e1b4ce7470Argyrios Kyrtzidis FileID getPredefinesFileID() const { return PredefinesFileID; } 51895d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis 519a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam /// getPPCallbacks/addPPCallbacks - Accessors for preprocessor callbacks. 520eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// Note that this class takes ownership of any PPCallbacks object given to 521eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// it. 5225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *getPPCallbacks() const { return Callbacks; } 523a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam void addPPCallbacks(PPCallbacks *C) { 524e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar if (Callbacks) 525e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar C = new PPChainedCallbacks(C, Callbacks); 5265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Callbacks = C; 5275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 529c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis /// \brief Given an identifier, return its latest MacroDirective if it is 530c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis // \#defined or null if it isn't \#define'd. 5319818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis MacroDirective *getMacroDirective(IdentifierInfo *II) const { 532295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor if (!II->hasMacroDefinition()) 533295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor return 0; 534ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5359818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis MacroDirective *MD = getMacroDirectiveHistory(II); 536c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis assert(MD->isDefined() && "Macro is undefined!"); 5379818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis return MD; 5389818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis } 5399818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis 5409818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis const MacroInfo *getMacroInfo(IdentifierInfo *II) const { 5419818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis return const_cast<Preprocessor*>(this)->getMacroInfo(II); 5429818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis } 5439818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis 5449818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis MacroInfo *getMacroInfo(IdentifierInfo *II) { 5459818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis if (MacroDirective *MD = getMacroDirective(II)) 546c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis return MD->getMacroInfo(); 5479818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis return 0; 548cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 5491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5504d7e0ced7f16a04aabe2d8d91cbbb52fb1162810Alexander Kornienko /// \brief Given an identifier, return the (probably #undef'd) MacroInfo 5514d7e0ced7f16a04aabe2d8d91cbbb52fb1162810Alexander Kornienko /// representing the most recent macro definition. One can iterate over all 5524d7e0ced7f16a04aabe2d8d91cbbb52fb1162810Alexander Kornienko /// previous macro definitions from it. This method should only be called for 5534d7e0ced7f16a04aabe2d8d91cbbb52fb1162810Alexander Kornienko /// identifiers that hadMacroDefinition(). 5549818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis MacroDirective *getMacroDirectiveHistory(const IdentifierInfo *II) const; 5554d7e0ced7f16a04aabe2d8d91cbbb52fb1162810Alexander Kornienko 556c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis /// \brief Add a directive to the macro directive history for this identifier. 557c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis void appendMacroDirective(IdentifierInfo *II, MacroDirective *MD); 558c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis DefMacroDirective *appendDefMacroDirective(IdentifierInfo *II, MacroInfo *MI, 559c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis SourceLocation Loc, 560c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis bool isImported) { 561c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis DefMacroDirective *MD = AllocateDefMacroDirective(MI, Loc, isImported); 562c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis appendMacroDirective(II, MD); 5639317ab94bb68122ba6fc728eb73c1308fb913cd1Argyrios Kyrtzidis return MD; 5649317ab94bb68122ba6fc728eb73c1308fb913cd1Argyrios Kyrtzidis } 565c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis DefMacroDirective *appendDefMacroDirective(IdentifierInfo *II, MacroInfo *MI){ 566c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis return appendDefMacroDirective(II, MI, MI->getDefinitionLoc(), false); 5679818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis } 5689317ab94bb68122ba6fc728eb73c1308fb913cd1Argyrios Kyrtzidis /// \brief Set a MacroDirective that was loaded from a PCH file. 5699317ab94bb68122ba6fc728eb73c1308fb913cd1Argyrios Kyrtzidis void setLoadedMacroDirective(IdentifierInfo *II, MacroDirective *MD); 5701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5718a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// macro_iterator/macro_begin/macro_end - This allows you to walk the macro 5728a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// history table. Currently defined macros have 5738a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// IdentifierInfo::hasMacroDefinition() set and an empty 5748a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// MacroInfo::getUndefLoc() at the head of the list. 575b3958476b21702a15f64f09d2862506d03dffe7bDmitri Gribenko typedef llvm::DenseMap<const IdentifierInfo *, 5769818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis MacroDirective*>::const_iterator macro_iterator; 57788a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor macro_iterator macro_begin(bool IncludeExternalMacros = true) const; 57888a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor macro_iterator macro_end(bool IncludeExternalMacros = true) const; 579a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 5801952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko /// \brief Return the name of the macro defined before \p Loc that has 5811952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko /// spelling \p Tokens. If there are multiple macros with same spelling, 5821952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko /// return the last one defined. 5831952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko StringRef getLastMacroWithSpelling(SourceLocation Loc, 5841952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko ArrayRef<TokenValue> Tokens) const; 5851952354bd376062c3ab3d328c0fc6c36530c9309Dmitri Gribenko 586e3d5e3ae5bd8028774f07d7c3751d4db82118942Chris Lattner const std::string &getPredefines() const { return Predefines; } 587aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// setPredefines - Set the predefines for this Preprocessor. These 588aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// predefines are automatically injected when parsing the main file. 589aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const char *P) { Predefines = P; } 590aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const std::string &P) { Predefines = P; } 5911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59203e67fbf7a2646447972742b6bb97c82ce4698fbNico Weber /// Return information about the specified preprocessor 59303e67fbf7a2646447972742b6bb97c82ce4698fbNico Weber /// identifier token. 594686775deca8b8685eb90801495880e3abdd844c2Chris Lattner IdentifierInfo *getIdentifierInfo(StringRef Name) const { 5953da736c1143126be19b253804b3b135ebcd3d6ffDaniel Dunbar return &Identifiers.get(Name); 5965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 5995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If 'Namespace' is non-null, then it is a token required to exist on the 6005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 601686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void AddPragmaHandler(StringRef Namespace, PragmaHandler *Handler); 6029b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis void AddPragmaHandler(PragmaHandler *Handler) { 603686775deca8b8685eb90801495880e3abdd844c2Chris Lattner AddPragmaHandler(StringRef(), Handler); 6049b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis } 6055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6064095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// RemovePragmaHandler - Remove the specific pragma handler from 6071824d54df85a462ada812dadda18130f951d40f3Dmitri Gribenko /// the preprocessor. If \p Namespace is non-null, then it should 6081824d54df85a462ada812dadda18130f951d40f3Dmitri Gribenko /// be the namespace that \p Handler was added to. It is an error 6094095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// to remove a handler that has not been registered. 610686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void RemovePragmaHandler(StringRef Namespace, PragmaHandler *Handler); 6119b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis void RemovePragmaHandler(PragmaHandler *Handler) { 612686775deca8b8685eb90801495880e3abdd844c2Chris Lattner RemovePragmaHandler(StringRef(), Handler); 6139b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis } 6144095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 6152e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Add the specified comment handler to the preprocessor. 616aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko void addCommentHandler(CommentHandler *Handler); 6171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6182e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Remove the specified comment handler. 6192e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// 6202e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// It is an error to remove a handler that has not been registered. 621aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko void removeCommentHandler(CommentHandler *Handler); 6221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 623f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief Set the code completion handler to the given object. 624f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor void setCodeCompletionHandler(CodeCompletionHandler &Handler) { 625f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeComplete = &Handler; 626f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor } 627ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 6281fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor /// \brief Retrieve the current code-completion handler. 6291fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor CodeCompletionHandler *getCodeCompletionHandler() const { 6301fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor return CodeComplete; 6311fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor } 632ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 633f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief Clear out the code completion handler. 634f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor void clearCodeCompletionHandler() { 635f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeComplete = 0; 636f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor } 637ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 63855817afdf9d453a443262a733f6caf6692dca118Douglas Gregor /// \brief Hook used by the lexer to invoke the "natural language" code 63955817afdf9d453a443262a733f6caf6692dca118Douglas Gregor /// completion point. 64055817afdf9d453a443262a733f6caf6692dca118Douglas Gregor void CodeCompleteNaturalLanguage(); 641ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 64294dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// \brief Retrieve the preprocessing record, or NULL if there is no 64394dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// preprocessing record. 644b9e1b75772db2c7db566c6034ba90a07f22e35ebDouglas Gregor PreprocessingRecord *getPreprocessingRecord() const { return Record; } 645ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 646ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// \brief Create a new preprocessing record, which will keep track of 64794dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// all macro expansions, macro definitions, etc. 64837ed12720a35b7bfa1c4de73ad6f1c6c1c88ee17Argyrios Kyrtzidis void createPreprocessingRecord(); 649ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 65053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// EnterMainSourceFile - Enter the specified FileID as the main source file, 6517dcc968f17a6ff9088c9651dddccc8d4025a1271Ted Kremenek /// which implicitly adds the builtin defines etc. 652e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner void EnterMainSourceFile(); 6531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 654dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar /// EndSourceFile - Inform the preprocessor callbacks that processing is 655dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar /// complete. 656dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar void EndSourceFile(); 657dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar 6585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFile - Add a source file to the top of the include stack and 659e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner /// start lexing tokens from it instead of the current buffer. Emit an error 660e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner /// and don't enter the file on error. 661e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner void EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir, 662e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner SourceLocation Loc); 6635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterMacro - Add a Macro to the top of the include stack and start lexing 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens from it instead of the current buffer. Args specifies the 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens input to a function-like macro. 667e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// 668e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// ILEnd specifies the location of the ')' for a function-like macro or the 669e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// identifier for an object-like macro. 670c30981a563a8947cb26b1e308d122fa2ef90fcebRichard Smith void EnterMacro(Token &Identifier, SourceLocation ILEnd, MacroInfo *Macro, 671c30981a563a8947cb26b1e308d122fa2ef90fcebRichard Smith MacroArgs *Args); 6721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterTokenStream - Add a "macro" context to the top of the include stack, 6746b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// which will cause the lexer to start returning the specified tokens. 6756b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 6766b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If DisableMacroExpansion is true, tokens lexed from the token stream will 6776b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// not be subject to further macro expansion. Otherwise, these tokens will 6786b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// be re-macro-expanded when/if expansion is enabled. 6796b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 6806b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If OwnsTokens is false, this method assumes that the specified stream of 6816b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// tokens has a permanent owner somewhere, so they do not need to be copied. 6826b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If it is true, it assumes the array of tokens is allocated with new[] and 6836b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// must be freed. 6846b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 6856b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner void EnterTokenStream(const Token *Toks, unsigned NumToks, 6866b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner bool DisableMacroExpansion, bool OwnsTokens); 6871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RemoveTopOfLexerStack - Pop the current lexer/macro exp off the top of the 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer stack. This should only be used in situations where the current 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// state of the top-of-stack lexer is known. 6915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RemoveTopOfLexerStack(); 69203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 69303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// EnableBacktrackAtThisPos - From the point that this method is called, and 694ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// until CommitBacktrackedTokens() or Backtrack() is called, the Preprocessor 695ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// keeps track of the lexed tokens so that a subsequent Backtrack() call will 696ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// make the Preprocessor re-lex the same tokens. 69703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 698a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// Nested backtracks are allowed, meaning that EnableBacktrackAtThisPos can 699ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be called multiple times and CommitBacktrackedTokens/Backtrack calls will 700ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be combined with the EnableBacktrackAtThisPos calls in reverse order. 70103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 702ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// NOTE: *DO NOT* forget to call either CommitBacktrackedTokens or Backtrack 703ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// at some point after EnableBacktrackAtThisPos. If you don't, caching of 704ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// tokens will continue indefinitely. 70503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 706a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void EnableBacktrackAtThisPos(); 70703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 708ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// CommitBacktrackedTokens - Disable the last EnableBacktrackAtThisPos call. 709ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis void CommitBacktrackedTokens(); 71003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 71103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// Backtrack - Make Preprocessor re-lex the tokens that were lexed since 7121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// EnableBacktrackAtThisPos() was previously called. 713a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void Backtrack(); 71403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 71503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// isBacktrackEnabled - True if EnableBacktrackAtThisPos() was called and 71603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// caching of tokens is on. 717fad03b2b38a3baea4b67e79e676fee15078e3258Argyrios Kyrtzidis bool isBacktrackEnabled() const { return !BacktrackPositions.empty(); } 71803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Lex - To lex a token from the preprocessor, just pull a token from the 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// current lexer or macro object. 721d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Lex(Token &Result) { 722b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor switch (CurLexerKind) { 723b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_Lexer: CurLexer->Lex(Result); break; 724b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_PTHLexer: CurPTHLexer->Lex(Result); break; 725b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_TokenLexer: CurTokenLexer->Lex(Result); break; 726b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_CachingLexer: CachingLex(Result); break; 727b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_LexAfterModuleImport: LexAfterModuleImport(Result); break; 728b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor } 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 731b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor void LexAfterModuleImport(Token &Result); 732ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 73302a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs /// \brief Lex a string literal, which may be the concatenation of multiple 73402a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs /// string literals and may even come from macro expansion. 73502a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs /// \returns true on success, false if a error diagnostic has been generated. 73602a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs bool LexStringLiteral(Token &Result, std::string &String, 73797f8461a2c553f68a258612d2322e4281c3f0915Andy Gibbs const char *DiagnosticTag, bool AllowMacroExpansion) { 73802a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs if (AllowMacroExpansion) 73902a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs Lex(Result); 74002a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs else 74102a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs LexUnexpandedToken(Result); 74297f8461a2c553f68a258612d2322e4281c3f0915Andy Gibbs return FinishLexStringLiteral(Result, String, DiagnosticTag, 74397f8461a2c553f68a258612d2322e4281c3f0915Andy Gibbs AllowMacroExpansion); 74402a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs } 74502a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs 74602a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs /// \brief Complete the lexing of a string literal where the first token has 74702a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs /// already been lexed (see LexStringLiteral). 74802a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs bool FinishLexStringLiteral(Token &Result, std::string &String, 74997f8461a2c553f68a258612d2322e4281c3f0915Andy Gibbs const char *DiagnosticTag, 75002a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs bool AllowMacroExpansion); 75102a176871d91bba3004e4f94b2d4d588ae4b2122Andy Gibbs 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexNonComment - Lex a token. If it's a comment, keep lexing until we get 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// something not a comment. This is useful in -E -C mode where comments 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// would foul up preprocessor directive handling. 755d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexNonComment(Token &Result) { 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer do 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (Result.getKind() == tok::comment); 7595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 760d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexUnexpandedToken - This is just like Lex, but this disables macro 7625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansion of identifier tokens. 763d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexUnexpandedToken(Token &Result) { 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Disable macro expansion. 7655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool OldVal = DisableMacroExpansion; 7665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = true; 7675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex the token. 7685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 7691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reenable it. 7715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = OldVal; 7725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 77488710f22be1acb04b7d812aebe87bea56394c07cEli Friedman /// LexUnexpandedNonComment - Like LexNonComment, but this disables macro 77588710f22be1acb04b7d812aebe87bea56394c07cEli Friedman /// expansion of identifier tokens. 77688710f22be1acb04b7d812aebe87bea56394c07cEli Friedman void LexUnexpandedNonComment(Token &Result) { 77788710f22be1acb04b7d812aebe87bea56394c07cEli Friedman do 77888710f22be1acb04b7d812aebe87bea56394c07cEli Friedman LexUnexpandedToken(Result); 77988710f22be1acb04b7d812aebe87bea56394c07cEli Friedman while (Result.getKind() == tok::comment); 78088710f22be1acb04b7d812aebe87bea56394c07cEli Friedman } 78188710f22be1acb04b7d812aebe87bea56394c07cEli Friedman 7828c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// Disables macro expansion everywhere except for preprocessor directives. 7838c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie void SetMacroExpansionOnlyInDirectives() { 7848c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie DisableMacroExpansion = true; 7858c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie MacroExpansionInDirectivesOverride = true; 7868c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie } 7878c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie 7886b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// LookAhead - This peeks ahead N tokens and returns that token without 7896b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// consuming any tokens. LookAhead(0) returns the next token that would be 7906b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returned by Lex(), LookAhead(1) returns the token after it, etc. This 7916b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returns normal tokens after phase 5. As such, it is equivalent to using 7926b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 'Lex', not 'LexUnexpandedToken'. 79303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &LookAhead(unsigned N) { 79403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (CachedLexPos + N < CachedTokens.size()) 79503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return CachedTokens[CachedLexPos+N]; 79603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 79703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return PeekAhead(N+1); 7989e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis } 7993604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 80008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// RevertCachedTokens - When backtracking is enabled and tokens are cached, 80108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// this allows to revert a specific number of tokens. 80208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// Note that the number of tokens being reverted should be up to the last 80308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// backtrack position, not more. 80408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis void RevertCachedTokens(unsigned N) { 80508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(isBacktrackEnabled() && 80608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Should only be called when tokens are cached for backtracking"); 80708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= signed(BacktrackPositions.back()) 80808b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis && "Should revert tokens up to the last backtrack position, not more"); 80908b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= 0 && 81008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Corrupted backtrack positions ?"); 81108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis CachedLexPos -= N; 81208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis } 81308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis 8143604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// EnterToken - Enters a token in the token stream to be lexed next. If 8153604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// BackTrack() is called afterwards, the token will remain at the insertion 8163604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// point. 8173604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void EnterToken(const Token &Tok) { 8183604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis EnterCachingLexMode(); 8193604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis CachedTokens.insert(CachedTokens.begin()+CachedLexPos, Tok); 8203604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 8213604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 8223604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// AnnotateCachedTokens - We notify the Preprocessor that if it is caching 8233604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// tokens (because backtrack is enabled) it should replace the most recent 8243604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens with the given annotation token. This function has no effect 8253604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// if backtracking is not enabled. 8263604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// 8273604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// Note that the use of this function is just for optimization; so that the 8283604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens doesn't get re-parsed and re-resolved after a backtrack is 8293604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// invoked. 8303604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotateCachedTokens(const Token &Tok) { 83147246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner assert(Tok.isAnnotation() && "Expected annotation token"); 83283cf05a3b0e655dc8ea1cb4c4e1eef541b770992Chris Lattner if (CachedLexPos != 0 && isBacktrackEnabled()) 8333604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis AnnotatePreviousCachedTokens(Tok); 8343604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 83539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 836440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith /// Get the location of the last cached token, suitable for setting the end 837440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith /// location of an annotation token. 838440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith SourceLocation getLastCachedTokenLocation() const { 839440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith assert(CachedLexPos != 0); 840440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith return CachedTokens[CachedLexPos-1].getLocation(); 841440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith } 842440d456c5cf9613a3ee6a3297f892ddd8da5b8f8Richard Smith 8431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Replace the last token with an annotation token. 84439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// 84539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// Like AnnotateCachedTokens(), this routine replaces an 84639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// already-parsed (and resolved) token with an annotation 84739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// token. However, this routine only replaces the last token with 84839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// the annotation token; it does not affect any other cached 84939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// tokens. This function has no effect if backtracking is not 85039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// enabled. 85139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor void ReplaceLastTokenWithAnnotation(const Token &Tok) { 85239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor assert(Tok.isAnnotation() && "Expected annotation token"); 85339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (CachedLexPos != 0 && isBacktrackEnabled()) 85439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor CachedTokens[CachedLexPos-1] = Tok; 85539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 85639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 8570576681bac125be07f77f66b02a3dba2c3a24557Richard Smith /// TypoCorrectToken - Update the current token to represent the provided 8580576681bac125be07f77f66b02a3dba2c3a24557Richard Smith /// identifier, in order to cache an action performed by typo correction. 8590576681bac125be07f77f66b02a3dba2c3a24557Richard Smith void TypoCorrectToken(const Token &Tok) { 8600576681bac125be07f77f66b02a3dba2c3a24557Richard Smith assert(Tok.getIdentifierInfo() && "Expected identifier token"); 8610576681bac125be07f77f66b02a3dba2c3a24557Richard Smith if (CachedLexPos != 0 && isBacktrackEnabled()) 8620576681bac125be07f77f66b02a3dba2c3a24557Richard Smith CachedTokens[CachedLexPos-1] = Tok; 8630576681bac125be07f77f66b02a3dba2c3a24557Richard Smith } 8640576681bac125be07f77f66b02a3dba2c3a24557Richard Smith 865d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor /// \brief Recompute the current lexer kind based on the CurLexer/CurPTHLexer/ 866d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor /// CurTokenLexer pointers. 867d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor void recomputeCurLexerKind(); 868e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 869e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// \brief Returns true if incremental processing is enabled 870e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool isIncrementalProcessingEnabled() const { return IncrementalProcessing; } 871e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 872e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// \brief Enables the incremental processing 873e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann void enableIncrementalProcessing(bool value = true) { 874e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann IncrementalProcessing = value; 875e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann } 876d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor 8772968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \brief Specify the point at which code-completion will be performed. 8782968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 8792968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param File the file in which code completion should occur. If 8802968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// this file is included multiple times, code-completion will 8812968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// perform completion the first time it is included. If NULL, this 8822968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// function clears out the code-completion point. 8832968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 8842968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param Line the line at which code completion should occur 8852968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// (1-based). 8862968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 8872968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param Column the column at which code completion should occur 8882968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// (1-based). 8892968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 8902968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \returns true if an error occurred, false otherwise. 891a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam bool SetCodeCompletionPoint(const FileEntry *File, 8922968442603b029949246467253eeac8139a5b6d8Douglas Gregor unsigned Line, unsigned Column); 8932968442603b029949246467253eeac8139a5b6d8Douglas Gregor 8943437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis /// \brief Determine if we are performing code completion. 8953437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool isCodeCompletionEnabled() const { return CodeCompletionFile != 0; } 8963437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis 8977d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns the location of the code-completion point. 8987d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// Returns an invalid location if code-completion is not enabled or the file 8997d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// containing the code-completion point has not been lexed yet. 9007d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation getCodeCompletionLoc() const { return CodeCompletionLoc; } 9017d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 9027d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns the start location of the file of code-completion point. 9037d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// Returns an invalid location if code-completion is not enabled or the file 9047d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// containing the code-completion point has not been lexed yet. 9057d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation getCodeCompletionFileLoc() const { 9067d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return CodeCompletionFileLoc; 9077d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis } 9087d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 9097d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns true if code-completion is enabled and we have hit the 9107d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// code-completion point. 9117d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis bool isCodeCompletionReached() const { return CodeCompletionReached; } 9127d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 9137d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Note that we hit the code-completion point. 914d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer void setCodeCompletionReached() { 915d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer assert(isCodeCompletionEnabled() && "Code-completion not enabled!"); 916d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer CodeCompletionReached = true; 917d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer // Silence any diagnostics that occur after we hit the code-completion. 918d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer getDiagnostics().setSuppressAllDiagnostics(true); 919d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer } 9207d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 921809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \brief The location of the currently-active \#pragma clang 9228dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// arc_cf_code_audited begin. Returns an invalid location if there 9238dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// is no such pragma active. 9248dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation getPragmaARCCFCodeAuditedLoc() const { 9258dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall return PragmaARCCFCodeAuditedLoc; 9268dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 9278dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 928809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \brief Set the location of the currently-active \#pragma clang 9298dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// arc_cf_code_audited begin. An invalid location ends the pragma. 9308dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall void setPragmaARCCFCodeAuditedLoc(SourceLocation Loc) { 9318dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PragmaARCCFCodeAuditedLoc = Loc; 9328dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 9338dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 934809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \brief Instruct the preprocessor to skip part of the main source file. 935f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// 936809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \param Bytes The number of bytes in the preamble to skip. 937f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// 938809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \param StartOfLine Whether skipping these bytes puts the lexer at the 939f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// start of a line. 940ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setSkipMainFilePreamble(unsigned Bytes, bool StartOfLine) { 941f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor SkipMainFilePreamble.first = Bytes; 942f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor SkipMainFilePreamble.second = StartOfLine; 943f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor } 944ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 9455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Diag - Forwarding function for diagnostics. This emits a diagnostic at 946d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner /// the specified Token's location, translating the token's start 9475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// position in the current buffer into a SourcePosition object for rendering. 948d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) const { 949d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer return Diags->Report(Loc, DiagID); 950d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer } 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 952d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID) const { 953d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer return Diags->Report(Tok.getLocation(), DiagID); 954d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer } 9551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 956834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// getSpelling() - Return the 'spelling' of the token at the given 957834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// location; does not go up to the spelling location or down to the 9589e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// expansion location. 95930900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// 960834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// \param buffer A buffer which will be used only if the token requires 961834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// "cleaning", e.g. if it contains trigraphs or escaped newlines 96230900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// \param invalid If non-null, will be set \c true if an error occurs. 963686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getSpelling(SourceLocation loc, 964fd61d6fe0aa9853f0577ca88a63901c3773e8101Nick Lewycky SmallVectorImpl<char> &buffer, 965fd61d6fe0aa9853f0577ca88a63901c3773e8101Nick Lewycky bool *invalid = 0) const { 9664e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getSpelling(loc, buffer, SourceMgr, LangOpts, invalid); 967834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall } 96830900dafbe972f4802c2663262b4393edab0d1cdJohn McCall 9695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling() - Return the 'spelling' of the Tok token. The spelling of a 9705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// token is the characters used to represent the token in the source file 9715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// after trigraph expansion and escaped-newline folding. In particular, this 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// wants to get the true, uncanonicalized, spelling of things like digraphs 9735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// UCNs, etc. 97450f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor /// 97530900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// \param Invalid If non-null, will be set \c true if an error occurs. 976b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner std::string getSpelling(const Token &Tok, bool *Invalid = 0) const { 9774e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getSpelling(Tok, SourceMgr, LangOpts, Invalid); 978b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner } 9790ff1042ddaad1419264be0de6da17f3b378482a4Daniel Dunbar 9805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling - This method is used to get the spelling of a token into a 9815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// preallocated buffer, instead of as an std::string. The caller is required 9825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to allocate enough space for the token, which is guaranteed to be at least 9835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Tok.getLength() bytes long. The length of the actual result is returned. 9845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 9855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Note that this method may do two possible things: it may either fill in 9865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the buffer specified with characters, or it may *change the input pointer* 9875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to point to a constant buffer with the data already in it (avoiding a 9885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// copy). The caller is not allowed to modify the returned buffer pointer 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// if an internal buffer is returned. 990ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie unsigned getSpelling(const Token &Tok, const char *&Buffer, 99148cf9824fbad42995f4d91d59d08d2620effd683Chris Lattner bool *Invalid = 0) const { 9924e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getSpelling(Tok, Buffer, SourceMgr, LangOpts, Invalid); 99348cf9824fbad42995f4d91d59d08d2620effd683Chris Lattner } 994b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 995ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// getSpelling - This method is used to get the spelling of a token into a 996ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// SmallVector. Note that the returned StringRef may not point to the 997ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// supplied buffer if a copy can be avoided. 998686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getSpelling(const Token &Tok, 999f4fb07ed4dfd144a39d904fc77b3b0bab580eb2eNico Weber SmallVectorImpl<char> &Buffer, 1000f4fb07ed4dfd144a39d904fc77b3b0bab580eb2eNico Weber bool *Invalid = 0) const; 1001ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer 1002d93335c43fd462145fee3ea8f4d84d430577c821Argyrios Kyrtzidis /// \brief Relex the token at the specified location. 1003d93335c43fd462145fee3ea8f4d84d430577c821Argyrios Kyrtzidis /// \returns true if there was a failure, false on success. 1004d93335c43fd462145fee3ea8f4d84d430577c821Argyrios Kyrtzidis bool getRawToken(SourceLocation Loc, Token &Result) { 1005d93335c43fd462145fee3ea8f4d84d430577c821Argyrios Kyrtzidis return Lexer::getRawToken(Loc, Result, SourceMgr, LangOpts); 1006d93335c43fd462145fee3ea8f4d84d430577c821Argyrios Kyrtzidis } 1007d93335c43fd462145fee3ea8f4d84d430577c821Argyrios Kyrtzidis 10087216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// getSpellingOfSingleCharacterNumericConstant - Tok is a numeric constant 10097216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// with length 1, return the character. 1010ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie char getSpellingOfSingleCharacterNumericConstant(const Token &Tok, 101150f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor bool *Invalid = 0) const { 10127216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(Tok.is(tok::numeric_constant) && 10137216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner Tok.getLength() == 1 && "Called on unsupported token"); 10147216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(!Tok.needsCleaning() && "Token can't need cleaning with length 1"); 10157216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner 10167216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // If the token is carrying a literal data pointer, just use it. 10177216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner if (const char *D = Tok.getLiteralData()) 10187216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *D; 101928396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek 10207216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // Otherwise, fall back on getCharacterData, which is slower, but always 10217216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // works. 1022a543016fe07030f695d6d56fd22c8c8da617e0d7Douglas Gregor return *SourceMgr.getCharacterData(Tok.getLocation(), Invalid); 102328396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek } 10241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1025c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// \brief Retrieve the name of the immediate macro expansion. 1026c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// 1027c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// This routine starts from a source location, and finds the name of the macro 1028c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// responsible for its immediate expansion. It looks through any intervening 1029c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// macro argument expansions to compute this. It returns a StringRef which 1030c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// refers to the SourceManager-owned buffer of the source where that macro 1031c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// name is spelled. Thus, the result shouldn't out-live the SourceManager. 1032c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks StringRef getImmediateMacroName(SourceLocation Loc) { 10334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getImmediateMacroName(Loc, SourceMgr, getLangOpts()); 1034c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks } 1035c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks 103647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// CreateString - Plop the specified string into a scratch buffer and set the 103747246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// specified token's location and length to it. If specified, the source 10389e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// location provides a location of the expansion point of the token. 1039374b3837d676133fcc1eb70a25c8baf8ec4a5c4aDmitri Gribenko void CreateString(StringRef Str, Token &Tok, 1040a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara SourceLocation ExpansionLocStart = SourceLocation(), 1041a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara SourceLocation ExpansionLocEnd = SourceLocation()); 1042b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 1043b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// \brief Computes the source location just past the end of the 1044b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token at this source location. 1045b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// 1046b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// This routine can be used to produce a source location that 1047b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// points just past the end of the token referenced by \p Loc, and 1048b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// is generally used when a diagnostic needs to point just after a 1049b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token where it expected something different that it received. If 1050b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// the returned source location would not be meaningful (e.g., if 1051b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// it points into a macro), this routine returns an invalid 1052b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// source location. 105333e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// 105433e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// \param Offset an offset from the end of the token, where the source 105533e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// location should refer to. The default offset (0) produces a source 105633e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// location pointing just past the end of the token; an offset of 1 produces 105733e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// a source location pointing to the last character in the token, etc. 10587ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset = 0) { 10594e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getLocForEndOfToken(Loc, Offset, SourceMgr, LangOpts); 10607ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner } 10611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10627a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis /// \brief Returns true if the given MacroID location points at the first 10639e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// token of the macro expansion. 106469bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// 106569bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// \param MacroBegin If non-null and function returns true, it is set to 106669bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// begin location of the macro. 106769bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis bool isAtStartOfMacroExpansion(SourceLocation loc, 106869bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis SourceLocation *MacroBegin = 0) const { 10694e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::isAtStartOfMacroExpansion(loc, SourceMgr, LangOpts, 107069bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis MacroBegin); 10717a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis } 10727a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis 10737a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis /// \brief Returns true if the given MacroID location points at the last 10749e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// token of the macro expansion. 107569bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// 1076ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// \param MacroEnd If non-null and function returns true, it is set to 107769bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// end location of the macro. 107869bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis bool isAtEndOfMacroExpansion(SourceLocation loc, 107969bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis SourceLocation *MacroEnd = 0) const { 10804e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::isAtEndOfMacroExpansion(loc, SourceMgr, LangOpts, MacroEnd); 10817a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis } 10827a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis 10835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// DumpToken - Print the token to stderr, used for debugging. 10845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 1085d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void DumpToken(const Token &Tok, bool DumpFlags = false) const; 1086c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner void DumpLocation(SourceLocation Loc) const; 10875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void DumpMacro(const MacroInfo &MI) const; 10881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// AdvanceToTokenCharacter - Given a location that specifies the start of a 109097ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// token, return a new location that specifies a character within the token. 1091872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart, 1092872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner unsigned Char) const { 10934e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::AdvanceToTokenCharacter(TokStart, Char, SourceMgr, LangOpts); 1094872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner } 1095872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner 10965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncrementPasteCounter - Increment the counters for the number of token 10975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// paste operations performed. If fast was specified, this is a 'fast paste' 10985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// case we handled. 10991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 11005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void IncrementPasteCounter(bool isFast) { 11015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isFast) 11025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFastTokenPaste; 11035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 11045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumTokenPaste; 11055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 11061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void PrintStats(); 11085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1109c5c5e92ec53f7e6ac7ebbbf77c6d8e4b7d88daecArgyrios Kyrtzidis size_t getTotalMemory() const; 1110c5c5e92ec53f7e6ac7ebbbf77c6d8e4b7d88daecArgyrios Kyrtzidis 11113f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// HandleMicrosoftCommentPaste - When the macro expander pastes together a 11123f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// comment (/##/) in microsoft mode, this method handles updating the current 11133f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// state, returning the token on the next source line. 11143f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner void HandleMicrosoftCommentPaste(Token &Tok); 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 11175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Preprocessor callback methods. These are invoked by a lexer as various 11185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // directives and events are found. 11195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1120c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// LookUpIdentifierInfo - Given a tok::raw_identifier token, look up the 1121c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// identifier information for the token and install it into the token, 1122c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// updating the token kind accordingly. 1123c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara IdentifierInfo *LookUpIdentifierInfo(Token &Identifier) const; 11241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 112528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleyprivate: 112628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley llvm::DenseMap<IdentifierInfo*,unsigned> PoisonReasons; 112728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 112828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleypublic: 112928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 113028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // SetPoisonReason - Call this function to indicate the reason for 113128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // poisoning an identifier. If that identifier is accessed while 113228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // poisoned, then this reason will be used instead of the default 113328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // "poisoned" diagnostic. 113428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void SetPoisonReason(IdentifierInfo *II, unsigned DiagID); 113528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 113628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // HandlePoisonedIdentifier - Display reason for poisoned 113728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // identifier. 113828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void HandlePoisonedIdentifier(Token & Tok); 113928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 114028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void MaybeHandlePoisonedIdentifier(Token & Identifier) { 114128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(IdentifierInfo * II = Identifier.getIdentifierInfo()) { 114228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(II->isPoisoned()) { 114328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley HandlePoisonedIdentifier(Identifier); 114428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 114528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 114628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 114728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 114828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleyprivate: 114928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley /// Identifiers used for SEH handling in Borland. These are only 115028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley /// allowed in particular circumstances 1151ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __except block 1152ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__exception_code, 1153ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___exception_code, 1154ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_GetExceptionCode; 1155ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __except filter expression 1156ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__exception_info, 1157ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___exception_info, 1158ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_GetExceptionInfo; 1159ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __finally 1160ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__abnormal_termination, 1161ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___abnormal_termination, 1162ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_AbnormalTermination; 116328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleypublic: 116428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void PoisonSEHIdentifiers(bool Poison = true); // Borland 116528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 11665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleIdentifier - This callback is invoked when the lexer reads an 11675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier and has filled in the tokens IdentifierInfo member. This 11685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// callback potentially macro expands it or turns it into a named token (like 11695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 'for'). 1170d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentifier(Token &Identifier); 11715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleEndOfFile - This callback is invoked when the lexer hits the end of 11745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the current file. This either returns the EOF token and returns true, or 11755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pops a level off the include stack and returns false, at which point the 11765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// client should call lex again. 1177d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleEndOfFile(Token &Result, bool isEndOfMacro = false); 11781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1179fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// HandleEndOfTokenLexer - This callback is invoked when the current 1180fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// TokenLexer hits the end of its token stream. 1181fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner bool HandleEndOfTokenLexer(Token &Result); 11821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleDirective - This callback is invoked when the lexer sees a # token 11841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// at the start of a line. This consumes the directive, modifies the 11855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer/preprocessor state, and advances the lexer(s) so that the next token 11865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// read is the correct one. 1187d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleDirective(Token &Result); 11885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 118984021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// CheckEndOfDirective - Ensure that the next token is a tok::eod token. If 119084021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// not, emit a diagnostic and consume up until the eod. If EnableMacros is 1191ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner /// true, then we consider macros that expand to zero tokens as being ok. 1192ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner void CheckEndOfDirective(const char *Directive, bool EnableMacros = false); 11931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1194478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// DiscardUntilEndOfDirective - Read and discard all tokens remaining on the 119584021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// current line until the tok::eod token is found. 1196478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void DiscardUntilEndOfDirective(); 11971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11987c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// SawDateOrTime - This returns true if the preprocessor has seen a use of 11997c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// __DATE__ or __TIME__ in the file so far. 12007c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner bool SawDateOrTime() const { 12017c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner return DATELoc != SourceLocation() || TIMELoc != SourceLocation(); 12027c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner } 1203c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned getCounterValue() const { return CounterValue; } 1204c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner void setCounterValue(unsigned V) { CounterValue = V; } 12051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 120690db26000aefe9335370013eec64c85232d80227Douglas Gregor /// \brief Retrieves the module that we're currently building, if any. 120790db26000aefe9335370013eec64c85232d80227Douglas Gregor Module *getCurrentModule(); 120890db26000aefe9335370013eec64c85232d80227Douglas Gregor 120958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Allocate a new MacroInfo object with the provided SourceLocation. 1210f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *AllocateMacroInfo(SourceLocation L); 1211f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1212baa74bd3968028d8e5b10ee9b50d0dceb41e85a9Argyrios Kyrtzidis /// \brief Allocate a new MacroInfo object loaded from an AST file. 1213baa74bd3968028d8e5b10ee9b50d0dceb41e85a9Argyrios Kyrtzidis MacroInfo *AllocateDeserializedMacroInfo(SourceLocation L, 1214baa74bd3968028d8e5b10ee9b50d0dceb41e85a9Argyrios Kyrtzidis unsigned SubModuleID); 1215baa74bd3968028d8e5b10ee9b50d0dceb41e85a9Argyrios Kyrtzidis 121658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Turn the specified lexer token into a fully checked and spelled 121758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// filename, e.g. as an operand of \#include. 121858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 121958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// The caller is expected to provide a buffer that is large enough to hold 122058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// the spelling of the filename, but is also expected to handle the case 122158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// when this method decides to use a different buffer. 122258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 122358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \returns true if the input filename was in <>'s or false if it was 122458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// in ""'s. 1225686775deca8b8685eb90801495880e3abdd844c2Chris Lattner bool GetIncludeFilenameSpelling(SourceLocation Loc,StringRef &Filename); 1226a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 122758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Given a "foo" or \<foo> reference, look up the indicated file. 122858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 122958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// Returns null on failure. \p isAngled indicates whether the file 123058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// reference is for system \#include's or not (i.e. using <> instead of ""). 1231bc3f628815b3841dc99109e7f67f9afa7793bc94Lawrence Crowl const FileEntry *LookupFile(SourceLocation FilenameLoc, StringRef Filename, 1232f45b646244705410866d62f1d8bf017a047ed662Chris Lattner bool isAngled, const DirectoryLookup *FromDir, 1233b5142bb7af5c70fffd09f05172a1379a35a9c29aChandler Carruth const DirectoryLookup *&CurDir, 1234686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<char> *SearchPath, 1235fba18aa8f2cd1994dc65e8cb9f4be201c560dc0bDouglas Gregor SmallVectorImpl<char> *RelativePath, 1236bc3f628815b3841dc99109e7f67f9afa7793bc94Lawrence Crowl ModuleMap::KnownHeader *SuggestedModule, 12371c2e9332fa69727425a3a2b912e36e2ab62083f8Douglas Gregor bool SkipCache = false); 1238a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 1239a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// GetCurLookup - The DirectoryLookup structure used to find the current 1240a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 124158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// implement \#include_next and find directory-specific properties. 1242a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const DirectoryLookup *GetCurDirLookup() { return CurDirLookup; } 1243a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 124458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Return true if we're in the top-level file, not in a \#include. 1245a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool isInPrimaryFile() const; 1246a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 124758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// ConcatenateIncludeName - Handle cases where the \#include name is expanded 1248a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// from a macro as multiple tokens, which need to be glued together. This 1249a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// occurs for code like: 125058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \code 125170517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko /// \#define FOO <x/y.h> 125258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#include FOO 125358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \endcode 125470517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko /// because in this case, "<x/y.h>" is returned as 7 tokens, not one. 1255a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// 1256321c2688198f6f1a4086964e505f239683423cecChris Lattner /// This code concatenates and consumes tokens up to the '>' token. It 1257321c2688198f6f1a4086964e505f239683423cecChris Lattner /// returns false if the > was found, otherwise it returns true if it finds 125884021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// and consumes the EOD marker. 1259f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith bool ConcatenateIncludeName(SmallString<128> &FilenameBuffer, 1260ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor SourceLocation &End); 1261a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 12629d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne /// LexOnOffSwitch - Lex an on-off-switch (C99 6.10.6p2) and verify that it is 126384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// followed by EOD. Return true if the token is not a valid on-off-switch. 12649d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne bool LexOnOffSwitch(tok::OnOffSwitch &OOS); 12659d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 12665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 12671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1268d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PushIncludeMacroStack() { 1269b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor IncludeMacroStack.push_back(IncludeStackInfo(CurLexerKind, 1270b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CurLexer.take(), 12719c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.take(), 12729c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer, 12739c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurTokenLexer.take(), 12749c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup)); 1275f89963b1e819d5e73796a4f9d7cd70129846e2ecTed Kremenek CurPPLexer = 0; 1276d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 12771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1278d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PopIncludeMacroStack() { 1279caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurLexer.reset(IncludeMacroStack.back().TheLexer); 12809c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.reset(IncludeMacroStack.back().ThePTHLexer); 12819c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer = IncludeMacroStack.back().ThePPLexer; 1282caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurTokenLexer.reset(IncludeMacroStack.back().TheTokenLexer); 12839c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup = IncludeMacroStack.back().TheDirLookup; 1284b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CurLexerKind = IncludeMacroStack.back().CurLexerKind; 1285d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek IncludeMacroStack.pop_back(); 1286d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 12871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 128858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Allocate a new MacroInfo object. 1289f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *AllocateMacroInfo(); 1290f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1291c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis DefMacroDirective *AllocateDefMacroDirective(MacroInfo *MI, 1292c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis SourceLocation Loc, 1293c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis bool isImported); 1294c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis UndefMacroDirective *AllocateUndefMacroDirective(SourceLocation UndefLoc); 1295c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis VisibilityMacroDirective *AllocateVisibilityMacroDirective(SourceLocation Loc, 1296c56fff7fd231aebf4b152f60f8f11ef91835c48aArgyrios Kyrtzidis bool isPublic); 12979818a1d443e97677dd3422305de9cc2b1fb2a8c1Argyrios Kyrtzidis 129858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Release the specified MacroInfo for re-use. 129958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 130058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// This memory will be reused for allocating new MacroInfo objects. 13010301b3ff132a4d986c092d161cb77d74b04cd2a6Chris Lattner void ReleaseMacroInfo(MacroInfo* MI); 13021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroName - Lex and validate a macro name, which occurs after a 130458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#define or \#undef. This emits a diagnostic, sets the token kind to eod, 13055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and discards the rest of the macro line if the macro name is invalid. 1306d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ReadMacroName(Token &MacroNameTok, char isDefineUndef = 0); 13071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroDefinitionArgList - The ( starting an argument list of a macro 13095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// definition has just been read. Lex the rest of the arguments and the 1310e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara /// closing ), updating MI with what we learn and saving in LastTok the 1311e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara /// last token read. 1312e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara /// Return true if an error occurs parsing the arg list. 1313e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara bool ReadMacroDefinitionArgList(MacroInfo *MI, Token& LastTok); 13141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 131558bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// We just read a \#if or related directive and decided that the 131658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// subsequent tokens are in the \#if'd out portion of the 131758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// file. Lex the rest of the file, until we see an \#endif. If \p 13185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundNonSkipPortion is true, then we have already emitted code for part of 131958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// this \#if directive, so \#else/\#elif blocks should never be entered. If 132058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \p FoundElse is false, then \#else directives are ok, if not, then we have 132158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// already seen one so a \#else directive is a duplicate. When this returns, 13225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the caller can lex the first valid token. 13235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SkipExcludedConditionalBlock(SourceLocation IfTokenLoc, 13246b4ff04dd22e7159887ea6c1bb8b1c01fc9c70a9Argyrios Kyrtzidis bool FoundNonSkipPortion, bool FoundElse, 13256b4ff04dd22e7159887ea6c1bb8b1c01fc9c70a9Argyrios Kyrtzidis SourceLocation ElseLoc = SourceLocation()); 13261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 132758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief A fast PTH version of SkipExcludedConditionalBlock. 1328268ee7016a2811803989487c0ad3799486092c63Ted Kremenek void PTHSkipExcludedConditionalBlock(); 13291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateDirectiveExpression - Evaluate an integer constant expression that 13315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// may occur after a #if or #elif directive and return it as a bool. If the 13325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression is equivalent to "!defined(X)" return X in IfNDefMacro. 13335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool EvaluateDirectiveExpression(IdentifierInfo *&IfNDefMacro); 13341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 133658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#pragma GCC poison/system_header/dependency and \#pragma once. 13375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinPragmas(); 13381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 133958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Register builtin macros such as __LINE__ with the identifier table. 13405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinMacros(); 13411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleMacroExpandedIdentifier - If an identifier token is read that is to 13435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// be expanded as a macro, handle it and return the next token as 'Tok'. If 13445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the macro should not be expanded return true, otherwise return false. 1345c515978bd3a703aa733f846a0094ffa84d149074Argyrios Kyrtzidis bool HandleMacroExpandedIdentifier(Token &Tok, MacroDirective *MD); 13461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13475b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// \brief Cache macro expanded tokens for TokenLexers. 13485b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis // 13495b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// Works like a stack; a TokenLexer adds the macro expanded tokens that is 13505b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// going to lex in the cache and when it finishes the tokens are removed 13515b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// from the end of the cache. 13525b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis Token *cacheMacroExpandedTokens(TokenLexer *tokLexer, 13532d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<Token> tokens); 13545b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis void removeCachedMacroExpandedTokensOfLastLexer(); 13555b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis friend void TokenLexer::ExpandFunctionArguments(); 13565b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis 13575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isNextPPTokenLParen - Determine whether the next preprocessor token to be 13585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexed is a '('. If so, consume the token and return true, if not, this 13595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// method should have no observable side-effect on the lexed tokens. 13605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isNextPPTokenLParen(); 13611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadFunctionLikeMacroArgs - After reading "MACRO(", this method is 13635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invoked to read all of the formal arguments specified for the macro 13645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invocation. This returns null on error. 1365e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner MacroArgs *ReadFunctionLikeMacroArgs(Token &MacroName, MacroInfo *MI, 13669e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth SourceLocation &ExpansionEnd); 13675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExpandBuiltinMacro - If an identifier token is read that is to be expanded 13695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// as a builtin macro, handle it and return the next token as 'Tok'. 1370d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ExpandBuiltinMacro(Token &Tok); 13711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 13735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// return the first token after the directive. The _Pragma token has just 13745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// been read into 'Tok'. 1375d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Handle_Pragma(Token &Tok); 13761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13771ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall /// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 13781ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall /// is not enclosed within a string literal. 13791ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall void HandleMicrosoft__pragma(Token &Tok); 13801ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 13815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFileWithLexer - Add a lexer to the top of the include stack and 13825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. 13835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EnterSourceFileWithLexer(Lexer *TheLexer, const DirectoryLookup *Dir); 13846137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 13856137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// EnterSourceFileWithPTH - Add a lexer to the top of the include stack and 13866137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// start getting tokens from it using the PTH cache. 13876137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek void EnterSourceFileWithPTH(PTHLexer *PL, const DirectoryLookup *Dir); 13881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 138995d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis /// \brief Set the file ID for the preprocessor predefines. 139095d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis void setPredefinesFileID(FileID FID) { 139195d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis assert(PredefinesFileID.isInvalid() && "PredefinesFileID already set!"); 139295d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis PredefinesFileID = FID; 139395d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis } 139495d912c994832333a998bc7d4ae0e8e830a2d38bArgyrios Kyrtzidis 139534eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// IsFileLexer - Returns true if we are lexing from a file and not a 139634eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// pragma or a macro. 139734eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek static bool IsFileLexer(const Lexer* L, const PreprocessorLexer* P) { 139834eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek return L ? !L->isPragmaLexer() : P != 0; 139941938c8493b4380df738263166b746eacb33c309Ted Kremenek } 140041938c8493b4380df738263166b746eacb33c309Ted Kremenek 140181d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek static bool IsFileLexer(const IncludeStackInfo& I) { 140281d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(I.TheLexer, I.ThePPLexer); 140341938c8493b4380df738263166b746eacb33c309Ted Kremenek } 140441938c8493b4380df738263166b746eacb33c309Ted Kremenek 140581d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek bool IsFileLexer() const { 140681d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(CurLexer.get(), CurPPLexer); 140741938c8493b4380df738263166b746eacb33c309Ted Kremenek } 14081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 141003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis // Caching stuff. 141103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void CachingLex(Token &Result); 141203569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis bool InCachingLexMode() const { 141303569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis // If the Lexer pointers are 0 and IncludeMacroStack is empty, it means 141403569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis // that we are past EOF, not that we are in CachingLex mode. 14157247c88d1e41514a41085f83ebf03dd5220e054aDavid Blaikie return !CurPPLexer && !CurTokenLexer && !CurPTHLexer && 141656eb1ec6e54080e47bbc62412737c25afb5211edTed Kremenek !IncludeMacroStack.empty(); 141703569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis } 141803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void EnterCachingLexMode(); 141903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void ExitCachingLexMode() { 142003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (InCachingLexMode()) 142103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis RemoveTopOfLexerStack(); 142203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis } 142303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &PeekAhead(unsigned N); 14243604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotatePreviousCachedTokens(const Token &Tok); 142503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 142603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 14275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle*Directive - implement the various preprocessor directives. These 14285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// should side-effect the current preprocessor object so that the next call 14295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to Lex() will return the appropriate token next. 1430359cc4475487ea0a660b3e8918334a2866e71c66Chris Lattner void HandleLineDirective(Token &Tok); 1431478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void HandleDigitDirective(Token &Tok); 1432d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUserDiagnosticDirective(Token &Tok, bool isWarning); 1433d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentSCCSDirective(Token &Tok); 143494ad28b31433058445a27db722f60402ee820beaDouglas Gregor void HandleMacroPublicDirective(Token &Tok); 1435aa93a875605536d72a10359a0098396192b7d4ecDouglas Gregor void HandleMacroPrivateDirective(Token &Tok); 1436ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 14375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // File inclusion. 1438ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeDirective(SourceLocation HashLoc, 1439ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor Token &Tok, 14405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *LookupFrom = 0, 14415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isImport = false); 1442ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeNextDirective(SourceLocation HashLoc, Token &Tok); 1443ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeMacrosDirective(SourceLocation HashLoc, Token &Tok); 1444ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleImportDirective(SourceLocation HashLoc, Token &Tok); 14454207edaf03da28fa917a94b31c5c1eef0e6417dcAaron Ballman void HandleMicrosoftImportDirective(Token &Tok); 14461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro handling. 1448671538e8a51eab5bd65a1f9f327ba7f44f84e486Richard Trieu void HandleDefineDirective(Token &Tok, bool ImmediatelyAfterTopLevelIfndef); 1449d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUndefDirective(Token &Tok); 14501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Conditional Inclusion. 1452d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfdefDirective(Token &Tok, bool isIfndef, 14535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadAnyTokensBeforeDirective); 1454d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfDirective(Token &Tok, bool ReadAnyTokensBeforeDirective); 1455d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleEndifDirective(Token &Tok); 1456d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElseDirective(Token &Tok); 1457d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElifDirective(Token &Tok); 14581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Pragmas. 14600189fd61ec72d86e008aa5615be80581f84cf703Enea Zaffanella void HandlePragmaDirective(SourceLocation IntroducerLoc, 14610189fd61ec72d86e008aa5615be80581f84cf703Enea Zaffanella PragmaIntroducerKind Introducer); 14625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 1463d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaOnce(Token &OnceTok); 14642243449253475574fc6f14986ff8f7fce5d46799Chris Lattner void HandlePragmaMark(); 1465d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaPoison(Token &PoisonTok); 1466d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaSystemHeader(Token &SysHeaderTok); 1467d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaDependency(Token &DependencyTok); 1468f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner void HandlePragmaPushMacro(Token &Tok); 1469f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner void HandlePragmaPopMacro(Token &Tok); 14704c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman void HandlePragmaIncludeAlias(Token &Tok); 1471f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *ParsePragmaPushOrPopMacro(Token &Tok); 1472f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1473046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // Return true and store the first token only if any CommentHandler 1474046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // has inserted some tokens and getCommentRetentionState() is false. 1475046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner bool HandleComment(Token &Token, SourceRange Comment); 14760827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis 14770827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// \brief A macro is used, update information about macros that need unused 14780827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// warnings. 14790827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis void markMacroAsUsed(MacroInfo *MI); 14805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 14815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \brief Abstract base class that describes a handler that will receive 14832e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor/// source ranges for each of the comments encountered in the source file. 14842e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler { 14852e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorpublic: 14862e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor virtual ~CommentHandler(); 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1488046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // The handler shall return true if it has pushed any tokens 1489046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // to be read using e.g. EnterToken or EnterTokenStream. 1490046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner virtual bool HandleComment(Preprocessor &PP, SourceRange Comment) = 0; 14912e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor}; 14921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 14945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 1496