Preprocessor.h revision c12906ee78e006df6a71acf52ca9dd3171ddbf07
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 17af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek#include "clang/Lex/MacroInfo.h" 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Lexer.h" 199c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek#include "clang/Lex/PTHLexer.h" 20eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner#include "clang/Lex/PPCallbacks.h" 215d75de0f821023f4ed4815825bf3aea8a0b5e40dChris Lattner#include "clang/Lex/TokenLexer.h" 226137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek#include "clang/Lex/PTHManager.h" 231b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 24d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer#include "clang/Basic/Diagnostic.h" 25c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#include "clang/Basic/IdentifierTable.h" 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceLocation.h" 27cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner#include "llvm/ADT/DenseMap.h" 284f32786ac45210143654390177105eb749b614e9Ted Kremenek#include "llvm/ADT/IntrusiveRefCntPtr.h" 290827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis#include "llvm/ADT/SmallPtrSet.h" 30caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek#include "llvm/ADT/OwningPtr.h" 31f4d5eb4866a27d497f0bb75b12c2ffd48ad4d9c0Benjamin Kramer#include "llvm/ADT/SmallVector.h" 325b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis#include "llvm/ADT/ArrayRef.h" 330ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek#include "llvm/Support/Allocator.h" 342e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor#include <vector> 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 368fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramernamespace llvm { 378fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer template<unsigned InternalLen> class SmallString; 388fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer} 398fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass SourceManager; 4388a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregorclass ExternalPreprocessorSource; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileManager; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileEntry; 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass HeaderSearch; 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaNamespace; 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaHandler; 492e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ScratchBuffer; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass TargetInfo; 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PPCallbacks; 53f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorclass CodeCompletionHandler; 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass DirectoryLookup; 5594dc8f640ebea52241412512ed48601626edbc58Douglas Gregorclass PreprocessingRecord; 566aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregorclass ModuleLoader; 57ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 58e5956bd2730c051835f9acd9e957c5d79f99e7c3Chris Lattner/// Preprocessor - This object engages in a tight little dance with the lexer to 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// efficiently preprocess tokens. Lexers know only about tokens within a 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// single source file, and don't know anything about preprocessor-level issues 6158bf98725b6d4588338e191d2ab981b104471dabJames Dennett/// like the \#include stack, token expansion, etc. 625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 63c93dc7889644293e318e19d82830ea2acc45b678Dylan Noblesmithclass Preprocessor : public RefCountedBase<Preprocessor> { 64d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer DiagnosticsEngine *Diags; 654e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie LangOptions &LangOpts; 66998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo *Target; 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &FileMgr; 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &SourceMgr; 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuffer *ScratchBuf; 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &HeaderInfo; 716aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &TheModuleLoader; 721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7388a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor /// \brief External source of macros. 7488a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalPreprocessorSource *ExternalSource; 75a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 76ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 776137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// PTH - An optional PTHManager object used for getting tokens from 786137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// a token cache rather than lexing the original source file. 796f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<PTHManager> PTH; 801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 810ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// BP - A BumpPtrAllocator object used to quickly allocate and release 820ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// objects internal to the Preprocessor. 830ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek llvm::BumpPtrAllocator BP; 841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers for builtin macros and other builtins. 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__LINE__, *Ident__FILE__; // __LINE__, __FILE__ 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__DATE__, *Ident__TIME__; // __DATE__, __TIME__ 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__INCLUDE_LEVEL__; // __INCLUDE_LEVEL__ 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__BASE_FILE__; // __BASE_FILE__ 905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__TIMESTAMP__; // __TIMESTAMP__ 91c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner IdentifierInfo *Ident__COUNTER__; // __COUNTER__ 921ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall IdentifierInfo *Ident_Pragma, *Ident__pragma; // _Pragma, __pragma 931ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall IdentifierInfo *Ident__VA_ARGS__; // __VA_ARGS__ 94148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_feature; // __has_feature 95c1b5fa41f09512c74030b9a2a0d1564535e22a76Peter Collingbourne IdentifierInfo *Ident__has_extension; // __has_extension 96148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_builtin; // __has_builtin 97cae5095c116c29a4e52c91fa0ad88df09dd2b45fAnders Carlsson IdentifierInfo *Ident__has_attribute; // __has_attribute 9892bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include; // __has_include 9992bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include_next; // __has_include_next 100d768150ef57f617c8d9fef48f3c92e8f21698024Ted Kremenek IdentifierInfo *Ident__has_warning; // __has_warning 1011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DATELoc, TIMELoc; 103c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned CounterValue; // Next __COUNTER__ value. 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum { 10658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// MaxIncludeStackDepth - Maximum depth of \#includes. 1075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxAllowedIncludeStackDepth = 200 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 1095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that is set before the preprocessor begins. 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepComments : 1; 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepMacroComments : 1; 113f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman bool SuppressIncludeNotFoundError : 1; 114ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that changes while the preprocessor runs: 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool InMacroArgs : 1; // True if parsing fn macro invocation args. 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1185814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar /// Whether the preprocessor owns the header search object. 1195814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar bool OwnsHeaderSearch : 1; 1205814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar 1211d9c54df56391ac4740db27d551782e81189cb51Chris Lattner /// DisableMacroExpansion - True if macro expansion is disabled. 1221d9c54df56391ac4740db27d551782e81189cb51Chris Lattner bool DisableMacroExpansion : 1; 1231d9c54df56391ac4740db27d551782e81189cb51Chris Lattner 1248c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// MacroExpansionInDirectivesOverride - Temporarily disables 1258c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// DisableMacroExpansion (i.e. enables expansion) when parsing preprocessor 1268c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// directives. 1278c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie bool MacroExpansionInDirectivesOverride : 1; 1288c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie 1298c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie class ResetMacroExpansionHelper; 1308c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie 13188a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor /// \brief Whether we have already loaded macros from the external source. 13288a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor mutable bool ReadMacrosFromExternalSource : 1; 133a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 1346fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose /// \brief True if pragmas are enabled. 1356fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose bool PragmasEnabled : 1; 1366fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose 13714e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis /// \brief True if we are pre-expanding macro arguments. 13814e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis bool InMacroArgPreExpansion; 13914e645557ae91c6770d62beb00a1c522e0bfd5d6Argyrios Kyrtzidis 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers - This is mapping/lookup information for all identifiers in 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the program, including program keywords. 142c3222091e1ffa35d0264ca6b680a88c9dc84ede2Daniel Dunbar mutable IdentifierTable Identifiers; 1431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14468d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// Selectors - This table contains all the selectors in the program. Unlike 14568d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// IdentifierTable above, this table *isn't* populated by the preprocessor. 1469e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// It is declared/expanded here because it's role/lifetime is 14768d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// conceptually similar the IdentifierTable. In addition, the current control 1481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// flow (in clang::ParseAST()), make it convenient to put here. 14968d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// FIXME: Make sure the lifetime of Identifiers/Selectors *isn't* tied to 150083abdf67f157e9d2ab5a8c9d5e71240479d3c99Sebastian Redl /// the lifetime of the preprocessor. 15129238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable Selectors; 1522e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 1531b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner /// BuiltinInfo - Information about builtins. 1541b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context BuiltinInfo; 1551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// PragmaHandlers - This tracks all of the pragmas that the client registered 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// with this preprocessor. 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *PragmaHandlers; 1591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Tracks all of the comment handlers that the client registered 1612e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// with this preprocessor. 1622e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor std::vector<CommentHandler *> CommentHandlers; 1631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 164e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// \brief True if we want to ignore EOF token and continue later on (thus 165e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// avoid tearing the Lexer and etc. down). 166e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool IncrementalProcessing; 167e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 168f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief The code-completion handler. 169f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeCompletionHandler *CodeComplete; 170ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1712968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \brief The file that we're performing code-completion for, if any. 1722968442603b029949246467253eeac8139a5b6d8Douglas Gregor const FileEntry *CodeCompletionFile; 1732968442603b029949246467253eeac8139a5b6d8Douglas Gregor 1747d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The offset in file for the code-completion point. 1757d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis unsigned CodeCompletionOffset; 1767d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 1777d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The location for the code-completion point. This gets instantiated 17858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// when the CodeCompletionFile gets \#include'ed for preprocessing. 1797d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation CodeCompletionLoc; 1807d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 1817d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The start location for the file of the code-completion point. 18258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 18358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// This gets instantiated when the CodeCompletionFile gets \#include'ed 1847d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// for preprocessing. 1857d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation CodeCompletionFileLoc; 1867d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 187c13a34b690d2dc2a03c2fea75a0a1438636c19ceDouglas Gregor /// \brief The source location of the 'import' contextual keyword we just 188c13a34b690d2dc2a03c2fea75a0a1438636c19ceDouglas Gregor /// lexed, if any. 189b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor SourceLocation ModuleImportLoc; 1908dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 191b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// \brief The module import path that we're currently processing. 192b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor llvm::SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> 193b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor ModuleImportPath; 194b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor 195b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// \brief Whether the module import expectes an identifier next. Otherwise, 196b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// it expects a '.' or ';'. 197b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor bool ModuleImportExpectsIdentifier; 198b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor 1998dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// \brief The source location of the currently-active 2008dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// #pragma clang arc_cf_code_audited begin. 2018dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation PragmaARCCFCodeAuditedLoc; 202ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2037d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief True if we hit the code-completion point. 2047d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis bool CodeCompletionReached; 2057d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 206f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// \brief The number of bytes that we will initially skip when entering the 207f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// main file, which is used when loading a precompiled preamble, along 208f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// with a flag that indicates whether skipping this number of bytes will 209f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// place the lexer at the start of a line. 210f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor std::pair<unsigned, bool> SkipMainFilePreamble; 211ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLexer - This is the current top of the stack that we're lexing from if 2139c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding a macro and we are lexing directly from source code. 2149c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 2156f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<Lexer> CurLexer; 2161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2179c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer - This is the current top of stack that we're lexing from if 2189c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding from a macro and we are lexing from a PTH cache. 2199c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 2206f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<PTHLexer> CurPTHLexer; 2211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2229c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPPLexer - This is the current top of the stack what we're lexing from 2239c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// if not expanding a macro. This is an alias for either CurLexer or 2249c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer. 22523f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner PreprocessorLexer *CurPPLexer; 226ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLookup - The DirectoryLookup structure used to find the current 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 22958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// implement \#include_next and find directory-specific properties. 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDirLookup; 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2326cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurTokenLexer - This is the current macro we are expanding, if we are 2336cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// expanding a macro. One of CurLexer and CurTokenLexer must be null. 2346f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<TokenLexer> CurTokenLexer; 2351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 236b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor /// \brief The kind of lexer we're currently working with. 237ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie enum CurLexerKind { 238ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_Lexer, 239ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_PTHLexer, 240ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_TokenLexer, 241b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CLK_CachingLexer, 242b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CLK_LexAfterModuleImport 243b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor } CurLexerKind; 244b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncludeMacroStack - This keeps track of the stack of files currently 24658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#included, and macros currently being expanded from, not counting 2476cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurLexer/CurTokenLexer. 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct IncludeStackInfo { 249b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor enum CurLexerKind CurLexerKind; 2509c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek Lexer *TheLexer; 2519c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PTHLexer *ThePTHLexer; 2529c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer *ThePPLexer; 2531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TokenLexer *TheTokenLexer; 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *TheDirLookup; 2559c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 256ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IncludeStackInfo(enum CurLexerKind K, Lexer *L, PTHLexer* P, 257b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor PreprocessorLexer* PPL, 2589c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TokenLexer* TL, const DirectoryLookup *D) 259ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : CurLexerKind(K), TheLexer(L), ThePTHLexer(P), ThePPLexer(PPL), 260b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor TheTokenLexer(TL), TheDirLookup(D) {} 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::vector<IncludeStackInfo> IncludeMacroStack; 2631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Callbacks - These are actions invoked when some preprocessor activity is 26558bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// encountered (e.g. a file is \#included, etc). 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *Callbacks; 2671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26866c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis struct MacroExpandsInfo { 26966c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis Token Tok; 27066c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis MacroInfo *MI; 27166c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis SourceRange Range; 27266c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis MacroExpandsInfo(Token Tok, MacroInfo *MI, SourceRange Range) 27366c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis : Tok(Tok), MI(MI), Range(Range) { } 27466c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis }; 27566c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis SmallVector<MacroExpandsInfo, 2> DelayedMacroExpandsCallbacks; 27666c44e700fb3f244b2c443bfbd6a05b5f1843ec0Argyrios Kyrtzidis 2778a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// Macros - For each IdentifierInfo that was associated with a macro, we 2788a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// keep a mapping to the history of all macro definitions and #undefs in 2798a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// the reverse order (the latest one is in the head of the list). 280cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner llvm::DenseMap<IdentifierInfo*, MacroInfo*> Macros; 281c12906ee78e006df6a71acf52ca9dd3171ddbf07Douglas Gregor friend class ASTReader; 282c12906ee78e006df6a71acf52ca9dd3171ddbf07Douglas Gregor 2830827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// \brief Macros that we want to warn because they are not used at the end 2840827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// of the translation unit; we store just their SourceLocations instead 2850827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// something like MacroInfo*. The benefit of this is that when we are 2860827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// deserializing from PCH, we don't need to deserialize identifier & macros 2870827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// just so that we can report that they are unused, we just warn using 2880827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// the SourceLocations of this set (that will be filled by the ASTReader). 2890827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// We are using SmallPtrSet instead of a vector for faster removal. 2900827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis typedef llvm::SmallPtrSet<SourceLocation, 32> WarnUnusedMacroLocsTy; 2910827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis WarnUnusedMacroLocsTy WarnUnusedMacroLocs; 2920827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis 29323f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner /// MacroArgCache - This is a "freelist" of MacroArg objects that can be 29423f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner /// reused for quick allocation. 29523f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner MacroArgs *MacroArgCache; 29623f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner friend class MacroArgs; 297ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 298ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// PragmaPushMacroInfo - For each IdentifierInfo used in a #pragma 299ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// push_macro directive, we keep a MacroInfo stack used to restore 300f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner /// previous macro value. 301f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> > PragmaPushMacroInfo; 3021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Various statistics we track for performance analysis. 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumDirectives, NumIncluded, NumDefined, NumUndefined, NumPragma; 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumIf, NumElse, NumEndif; 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumEnteredSourceFiles, MaxIncludeStackDepth; 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumMacroExpanded, NumFnMacroExpanded, NumBuiltinMacroExpanded; 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumFastMacroExpanded, NumTokenPaste, NumFastTokenPaste; 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumSkipped; 3101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 311aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// Predefines - This string is the predefined macros that preprocessor 312aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// should use from the command line etc. 313aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner std::string Predefines; 3141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3156cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// TokenLexerCache - Cache macro expanders to reduce malloc traffic. 3166cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner enum { TokenLexerCacheSize = 8 }; 3176cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner unsigned NumCachedTokenLexers; 3186cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner TokenLexer *TokenLexerCache[TokenLexerCacheSize]; 3199e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis 3205b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// \brief Keeps macro expanded tokens for TokenLexers. 3215b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis // 3225b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// Works like a stack; a TokenLexer adds the macro expanded tokens that is 3235b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// going to lex in the cache and when it finishes the tokens are removed 3245b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// from the end of the cache. 325686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<Token, 16> MacroExpandedTokens; 3265b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis std::vector<std::pair<TokenLexer *, size_t> > MacroExpandingLexersStack; 3275b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis 3289e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// \brief A record of the macro definitions and expansions that 329ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// occurred during preprocessing. 33094dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// 33194dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// This is an optional side structure that can be enabled with 33294dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// \c createPreprocessingRecord() prior to preprocessing. 333b9e1b75772db2c7db566c6034ba90a07f22e35ebDouglas Gregor PreprocessingRecord *Record; 334ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 335e671e1bc73615eda155059a772266ed2882d758cChris Lattnerprivate: // Cached tokens state. 336686775deca8b8685eb90801495880e3abdd844c2Chris Lattner typedef SmallVector<Token, 1> CachedTokensTy; 33703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 33803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedTokens - Cached tokens are stored here when we do backtracking or 33903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// lookahead. They are "lexed" by the CachingLex() method. 34003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy CachedTokens; 34103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 34203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedLexPos - The position of the cached token that CachingLex() should 34303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// "lex" next. If it points beyond the CachedTokens vector, it means that 34403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// a normal Lex() should be invoked. 34503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy::size_type CachedLexPos; 34603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 347a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// BacktrackPositions - Stack of backtrack positions, allowing nested 348a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// backtracks. The EnableBacktrackAtThisPos() method pushes a position to 349a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// indicate where CachedLexPos should be set when the BackTrack() method is 350a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// invoked (at which point the last position is popped). 351a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis std::vector<CachedTokensTy::size_type> BacktrackPositions; 35203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 353af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek struct MacroInfoChain { 354af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfo MI; 355af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfoChain *Next; 3569714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek MacroInfoChain *Prev; 357af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek }; 358af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek 359af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek /// MacroInfos are managed as a chain for easy disposal. This is the head 360af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek /// of that list. 361af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfoChain *MIChainHead; 362af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek 3639714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek /// MICache - A "freelist" of MacroInfo objects that can be reused for quick 3649714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek /// allocation. 3659714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek MacroInfoChain *MICache; 3669714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek 367295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor MacroInfo *getInfoForMacro(IdentifierInfo *II) const; 368ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 370d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie Preprocessor(DiagnosticsEngine &diags, LangOptions &opts, 371998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo *target, 37272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek SourceManager &SM, HeaderSearch &Headers, 3736aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &TheModuleLoader, 3745814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar IdentifierInfoLookup *IILookup = 0, 375998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor bool OwnsHeaderSearch = false, 376e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool DelayInitialization = false, 377e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool IncrProcessing = false); 37872b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 3795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ~Preprocessor(); 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 381998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// \brief Initialize the preprocessor, if the constructor did not already 382998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// perform the initialization. 383998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// 384998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// \param Target Information about the target. 385998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor void Initialize(const TargetInfo &Target); 386ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 387d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &getDiagnostics() const { return *Diags; } 388d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie void setDiagnostics(DiagnosticsEngine &D) { Diags = &D; } 3897c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner 3904e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &getLangOpts() const { return LangOpts; } 391998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo &getTargetInfo() const { return *Target; } 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &getFileManager() const { return FileMgr; } 3935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &getSourceManager() const { return SourceMgr; } 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &getHeaderSearchInfo() const { return HeaderInfo; } 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierTable &getIdentifierTable() { return Identifiers; } 39729238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable &getSelectorTable() { return Selectors; } 3981b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context &getBuiltinInfo() { return BuiltinInfo; } 39932fca722dd974b8202d0fb9c71b6c185c0767da6Chris Lattner llvm::BumpPtrAllocator &getPreprocessorAllocator() { return BP; } 4001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 401337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek void setPTHManager(PTHManager* pm); 4021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 403880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek PTHManager *getPTHManager() { return PTH.get(); } 4042e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 40588a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor void setExternalSource(ExternalPreprocessorSource *Source) { 40688a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalSource = Source; 40788a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor } 408a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 40988a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalPreprocessorSource *getExternalSource() const { 41088a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor return ExternalSource; 41188a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor } 412a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 4136aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor /// \brief Retrieve the module loader associated with this preprocessor. 4146aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &getModuleLoader() const { return TheModuleLoader; } 415ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 4165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SetCommentRetentionState - Control whether or not the preprocessor retains 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// comments in output. 4185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SetCommentRetentionState(bool KeepComments, bool KeepMacroComments) { 4195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepComments = KeepComments | KeepMacroComments; 4205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepMacroComments = KeepMacroComments; 4215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool getCommentRetentionState() const { return KeepComments; } 4241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4256fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose void setPragmasEnabled(bool Enabled) { PragmasEnabled = Enabled; } 4266fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose bool getPragmasEnabled() const { return PragmasEnabled; } 4276fe6a49c4058211ff4489023c78615ec0266c5ffJordan Rose 428f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman void SetSuppressIncludeNotFoundError(bool Suppress) { 429f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman SuppressIncludeNotFoundError = Suppress; 430f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman } 431f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman 432f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman bool GetSuppressIncludeNotFoundError() { 433f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman return SuppressIncludeNotFoundError; 434f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman } 435f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman 4365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isCurrentLexer - Return true if we are lexing directly from the specified 4375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer. 4387062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek bool isCurrentLexer(const PreprocessorLexer *L) const { 4397062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek return CurPPLexer == L; 4405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 442a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// getCurrentLexer - Return the current lexer being lexed from. Note 443a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// that this ignores any potentially active macro expansions and _Pragma 444a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// expansions going on at the time. 445a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson PreprocessorLexer *getCurrentLexer() const { return CurPPLexer; } 446a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 447321c2688198f6f1a4086964e505f239683423cecChris Lattner /// getCurrentFileLexer - Return the current file lexer being lexed from. 448321c2688198f6f1a4086964e505f239683423cecChris Lattner /// Note that this ignores any potentially active macro expansions and _Pragma 4495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansions going on at the time. 45068e48e4a81767997ef0231e47eca4f665102c95eTed Kremenek PreprocessorLexer *getCurrentFileLexer() const; 4511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 452a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam /// getPPCallbacks/addPPCallbacks - Accessors for preprocessor callbacks. 453eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// Note that this class takes ownership of any PPCallbacks object given to 454eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// it. 4555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *getPPCallbacks() const { return Callbacks; } 456a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam void addPPCallbacks(PPCallbacks *C) { 457e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar if (Callbacks) 458e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar C = new PPChainedCallbacks(C, Callbacks); 4595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Callbacks = C; 4605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 46258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Given an identifier, return the MacroInfo it is \#defined to 46358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// or null if it isn't \#define'd. 464cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner MacroInfo *getMacroInfo(IdentifierInfo *II) const { 465295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor if (!II->hasMacroDefinition()) 466295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor return 0; 467ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 468295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor return getInfoForMacro(II); 469cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 4701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 47158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Specify a macro for this identifier. 4725d5051f3e79bf754134ccdf7a1dc7778cd80c73eDouglas Gregor void setMacroInfo(IdentifierInfo *II, MacroInfo *MI, 4735d5051f3e79bf754134ccdf7a1dc7778cd80c73eDouglas Gregor bool LoadedFromAST = false); 474e40c4238a572bf8241a04e0005f70550cbfc1cfbAlexander Kornienko /// \brief Undefine a macro for this identifier. 475e40c4238a572bf8241a04e0005f70550cbfc1cfbAlexander Kornienko void clearMacroInfo(IdentifierInfo *II); 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4778a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// macro_iterator/macro_begin/macro_end - This allows you to walk the macro 4788a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// history table. Currently defined macros have 4798a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// IdentifierInfo::hasMacroDefinition() set and an empty 4808a64bb58c3b24d7d97895e435bbc0965c99bd3beAlexander Kornienko /// MacroInfo::getUndefLoc() at the head of the list. 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump typedef llvm::DenseMap<IdentifierInfo*, 48209b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner MacroInfo*>::const_iterator macro_iterator; 48388a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor macro_iterator macro_begin(bool IncludeExternalMacros = true) const; 48488a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor macro_iterator macro_end(bool IncludeExternalMacros = true) const; 485a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 486e3d5e3ae5bd8028774f07d7c3751d4db82118942Chris Lattner const std::string &getPredefines() const { return Predefines; } 487aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// setPredefines - Set the predefines for this Preprocessor. These 488aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// predefines are automatically injected when parsing the main file. 489aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const char *P) { Predefines = P; } 490aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const std::string &P) { Predefines = P; } 4911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getIdentifierInfo - Return information about the specified preprocessor 4935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier token. The version of this method that takes two character 4945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pointers is preferred unless the identifier is already available as a 4955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// string (this avoids allocation and copying of memory to construct an 4965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// std::string). 497686775deca8b8685eb90801495880e3abdd844c2Chris Lattner IdentifierInfo *getIdentifierInfo(StringRef Name) const { 4983da736c1143126be19b253804b3b135ebcd3d6ffDaniel Dunbar return &Identifiers.get(Name); 4995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 5025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If 'Namespace' is non-null, then it is a token required to exist on the 5035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 504686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void AddPragmaHandler(StringRef Namespace, PragmaHandler *Handler); 5059b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis void AddPragmaHandler(PragmaHandler *Handler) { 506686775deca8b8685eb90801495880e3abdd844c2Chris Lattner AddPragmaHandler(StringRef(), Handler); 5079b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis } 5085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5094095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// RemovePragmaHandler - Remove the specific pragma handler from 5101824d54df85a462ada812dadda18130f951d40f3Dmitri Gribenko /// the preprocessor. If \p Namespace is non-null, then it should 5111824d54df85a462ada812dadda18130f951d40f3Dmitri Gribenko /// be the namespace that \p Handler was added to. It is an error 5124095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// to remove a handler that has not been registered. 513686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void RemovePragmaHandler(StringRef Namespace, PragmaHandler *Handler); 5149b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis void RemovePragmaHandler(PragmaHandler *Handler) { 515686775deca8b8685eb90801495880e3abdd844c2Chris Lattner RemovePragmaHandler(StringRef(), Handler); 5169b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis } 5174095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 5182e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Add the specified comment handler to the preprocessor. 519aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko void addCommentHandler(CommentHandler *Handler); 5201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5212e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Remove the specified comment handler. 5222e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// 5232e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// It is an error to remove a handler that has not been registered. 524aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko void removeCommentHandler(CommentHandler *Handler); 5251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 526f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief Set the code completion handler to the given object. 527f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor void setCodeCompletionHandler(CodeCompletionHandler &Handler) { 528f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeComplete = &Handler; 529f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor } 530ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5311fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor /// \brief Retrieve the current code-completion handler. 5321fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor CodeCompletionHandler *getCodeCompletionHandler() const { 5331fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor return CodeComplete; 5341fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor } 535ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 536f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief Clear out the code completion handler. 537f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor void clearCodeCompletionHandler() { 538f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeComplete = 0; 539f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor } 540ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 54155817afdf9d453a443262a733f6caf6692dca118Douglas Gregor /// \brief Hook used by the lexer to invoke the "natural language" code 54255817afdf9d453a443262a733f6caf6692dca118Douglas Gregor /// completion point. 54355817afdf9d453a443262a733f6caf6692dca118Douglas Gregor void CodeCompleteNaturalLanguage(); 544ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 54594dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// \brief Retrieve the preprocessing record, or NULL if there is no 54694dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// preprocessing record. 547b9e1b75772db2c7db566c6034ba90a07f22e35ebDouglas Gregor PreprocessingRecord *getPreprocessingRecord() const { return Record; } 548ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 549ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// \brief Create a new preprocessing record, which will keep track of 55094dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// all macro expansions, macro definitions, etc. 551c6c54521f95760a5eaf29b668d4bf41fe2af49d7Argyrios Kyrtzidis void createPreprocessingRecord(bool RecordConditionalDirectives); 552ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 55353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// EnterMainSourceFile - Enter the specified FileID as the main source file, 5547dcc968f17a6ff9088c9651dddccc8d4025a1271Ted Kremenek /// which implicitly adds the builtin defines etc. 555e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner void EnterMainSourceFile(); 5561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 557dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar /// EndSourceFile - Inform the preprocessor callbacks that processing is 558dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar /// complete. 559dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar void EndSourceFile(); 560dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar 5615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFile - Add a source file to the top of the include stack and 562e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner /// start lexing tokens from it instead of the current buffer. Emit an error 563e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner /// and don't enter the file on error. 564e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner void EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir, 565e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner SourceLocation Loc); 5665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterMacro - Add a Macro to the top of the include stack and start lexing 5685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens from it instead of the current buffer. Args specifies the 5695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens input to a function-like macro. 570e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// 571e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// ILEnd specifies the location of the ')' for a function-like macro or the 572e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// identifier for an object-like macro. 573c30981a563a8947cb26b1e308d122fa2ef90fcebRichard Smith void EnterMacro(Token &Identifier, SourceLocation ILEnd, MacroInfo *Macro, 574c30981a563a8947cb26b1e308d122fa2ef90fcebRichard Smith MacroArgs *Args); 5751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterTokenStream - Add a "macro" context to the top of the include stack, 5776b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// which will cause the lexer to start returning the specified tokens. 5786b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 5796b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If DisableMacroExpansion is true, tokens lexed from the token stream will 5806b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// not be subject to further macro expansion. Otherwise, these tokens will 5816b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// be re-macro-expanded when/if expansion is enabled. 5826b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 5836b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If OwnsTokens is false, this method assumes that the specified stream of 5846b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// tokens has a permanent owner somewhere, so they do not need to be copied. 5856b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If it is true, it assumes the array of tokens is allocated with new[] and 5866b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// must be freed. 5876b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 5886b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner void EnterTokenStream(const Token *Toks, unsigned NumToks, 5896b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner bool DisableMacroExpansion, bool OwnsTokens); 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RemoveTopOfLexerStack - Pop the current lexer/macro exp off the top of the 5925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer stack. This should only be used in situations where the current 5935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// state of the top-of-stack lexer is known. 5945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RemoveTopOfLexerStack(); 59503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 59603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// EnableBacktrackAtThisPos - From the point that this method is called, and 597ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// until CommitBacktrackedTokens() or Backtrack() is called, the Preprocessor 598ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// keeps track of the lexed tokens so that a subsequent Backtrack() call will 599ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// make the Preprocessor re-lex the same tokens. 60003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 601a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// Nested backtracks are allowed, meaning that EnableBacktrackAtThisPos can 602ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be called multiple times and CommitBacktrackedTokens/Backtrack calls will 603ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be combined with the EnableBacktrackAtThisPos calls in reverse order. 60403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 605ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// NOTE: *DO NOT* forget to call either CommitBacktrackedTokens or Backtrack 606ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// at some point after EnableBacktrackAtThisPos. If you don't, caching of 607ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// tokens will continue indefinitely. 60803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 609a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void EnableBacktrackAtThisPos(); 61003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 611ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// CommitBacktrackedTokens - Disable the last EnableBacktrackAtThisPos call. 612ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis void CommitBacktrackedTokens(); 61303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 61403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// Backtrack - Make Preprocessor re-lex the tokens that were lexed since 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// EnableBacktrackAtThisPos() was previously called. 616a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void Backtrack(); 61703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 61803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// isBacktrackEnabled - True if EnableBacktrackAtThisPos() was called and 61903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// caching of tokens is on. 620fad03b2b38a3baea4b67e79e676fee15078e3258Argyrios Kyrtzidis bool isBacktrackEnabled() const { return !BacktrackPositions.empty(); } 62103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 6225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Lex - To lex a token from the preprocessor, just pull a token from the 6235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// current lexer or macro object. 624d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Lex(Token &Result) { 625b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor switch (CurLexerKind) { 626b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_Lexer: CurLexer->Lex(Result); break; 627b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_PTHLexer: CurPTHLexer->Lex(Result); break; 628b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_TokenLexer: CurTokenLexer->Lex(Result); break; 629b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_CachingLexer: CachingLex(Result); break; 630b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_LexAfterModuleImport: LexAfterModuleImport(Result); break; 631b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor } 6325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 634b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor void LexAfterModuleImport(Token &Result); 635ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 6365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexNonComment - Lex a token. If it's a comment, keep lexing until we get 6375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// something not a comment. This is useful in -E -C mode where comments 6385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// would foul up preprocessor directive handling. 639d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexNonComment(Token &Result) { 6405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer do 6415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 6425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (Result.getKind() == tok::comment); 6435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 644d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 6455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexUnexpandedToken - This is just like Lex, but this disables macro 6465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansion of identifier tokens. 647d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexUnexpandedToken(Token &Result) { 6485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Disable macro expansion. 6495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool OldVal = DisableMacroExpansion; 6505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = true; 6515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex the token. 6525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 6531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reenable it. 6555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = OldVal; 6565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 65888710f22be1acb04b7d812aebe87bea56394c07cEli Friedman /// LexUnexpandedNonComment - Like LexNonComment, but this disables macro 65988710f22be1acb04b7d812aebe87bea56394c07cEli Friedman /// expansion of identifier tokens. 66088710f22be1acb04b7d812aebe87bea56394c07cEli Friedman void LexUnexpandedNonComment(Token &Result) { 66188710f22be1acb04b7d812aebe87bea56394c07cEli Friedman do 66288710f22be1acb04b7d812aebe87bea56394c07cEli Friedman LexUnexpandedToken(Result); 66388710f22be1acb04b7d812aebe87bea56394c07cEli Friedman while (Result.getKind() == tok::comment); 66488710f22be1acb04b7d812aebe87bea56394c07cEli Friedman } 66588710f22be1acb04b7d812aebe87bea56394c07cEli Friedman 6668c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie /// Disables macro expansion everywhere except for preprocessor directives. 6678c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie void SetMacroExpansionOnlyInDirectives() { 6688c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie DisableMacroExpansion = true; 6698c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie MacroExpansionInDirectivesOverride = true; 6708c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie } 6718c0b3787e7ccc7978b42dfbb84da2b802c743a5dDavid Blaikie 6726b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// LookAhead - This peeks ahead N tokens and returns that token without 6736b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// consuming any tokens. LookAhead(0) returns the next token that would be 6746b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returned by Lex(), LookAhead(1) returns the token after it, etc. This 6756b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returns normal tokens after phase 5. As such, it is equivalent to using 6766b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 'Lex', not 'LexUnexpandedToken'. 67703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &LookAhead(unsigned N) { 67803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (CachedLexPos + N < CachedTokens.size()) 67903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return CachedTokens[CachedLexPos+N]; 68003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 68103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return PeekAhead(N+1); 6829e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis } 6833604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 68408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// RevertCachedTokens - When backtracking is enabled and tokens are cached, 68508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// this allows to revert a specific number of tokens. 68608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// Note that the number of tokens being reverted should be up to the last 68708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// backtrack position, not more. 68808b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis void RevertCachedTokens(unsigned N) { 68908b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(isBacktrackEnabled() && 69008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Should only be called when tokens are cached for backtracking"); 69108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= signed(BacktrackPositions.back()) 69208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis && "Should revert tokens up to the last backtrack position, not more"); 69308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= 0 && 69408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Corrupted backtrack positions ?"); 69508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis CachedLexPos -= N; 69608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis } 69708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis 6983604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// EnterToken - Enters a token in the token stream to be lexed next. If 6993604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// BackTrack() is called afterwards, the token will remain at the insertion 7003604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// point. 7013604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void EnterToken(const Token &Tok) { 7023604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis EnterCachingLexMode(); 7033604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis CachedTokens.insert(CachedTokens.begin()+CachedLexPos, Tok); 7043604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 7053604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 7063604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// AnnotateCachedTokens - We notify the Preprocessor that if it is caching 7073604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// tokens (because backtrack is enabled) it should replace the most recent 7083604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens with the given annotation token. This function has no effect 7093604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// if backtracking is not enabled. 7103604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// 7113604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// Note that the use of this function is just for optimization; so that the 7123604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens doesn't get re-parsed and re-resolved after a backtrack is 7133604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// invoked. 7143604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotateCachedTokens(const Token &Tok) { 71547246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner assert(Tok.isAnnotation() && "Expected annotation token"); 71683cf05a3b0e655dc8ea1cb4c4e1eef541b770992Chris Lattner if (CachedLexPos != 0 && isBacktrackEnabled()) 7173604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis AnnotatePreviousCachedTokens(Tok); 7183604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 71939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 7201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Replace the last token with an annotation token. 72139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// 72239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// Like AnnotateCachedTokens(), this routine replaces an 72339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// already-parsed (and resolved) token with an annotation 72439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// token. However, this routine only replaces the last token with 72539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// the annotation token; it does not affect any other cached 72639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// tokens. This function has no effect if backtracking is not 72739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// enabled. 72839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor void ReplaceLastTokenWithAnnotation(const Token &Tok) { 72939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor assert(Tok.isAnnotation() && "Expected annotation token"); 73039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (CachedLexPos != 0 && isBacktrackEnabled()) 73139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor CachedTokens[CachedLexPos-1] = Tok; 73239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 73339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 7340576681bac125be07f77f66b02a3dba2c3a24557Richard Smith /// TypoCorrectToken - Update the current token to represent the provided 7350576681bac125be07f77f66b02a3dba2c3a24557Richard Smith /// identifier, in order to cache an action performed by typo correction. 7360576681bac125be07f77f66b02a3dba2c3a24557Richard Smith void TypoCorrectToken(const Token &Tok) { 7370576681bac125be07f77f66b02a3dba2c3a24557Richard Smith assert(Tok.getIdentifierInfo() && "Expected identifier token"); 7380576681bac125be07f77f66b02a3dba2c3a24557Richard Smith if (CachedLexPos != 0 && isBacktrackEnabled()) 7390576681bac125be07f77f66b02a3dba2c3a24557Richard Smith CachedTokens[CachedLexPos-1] = Tok; 7400576681bac125be07f77f66b02a3dba2c3a24557Richard Smith } 7410576681bac125be07f77f66b02a3dba2c3a24557Richard Smith 742d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor /// \brief Recompute the current lexer kind based on the CurLexer/CurPTHLexer/ 743d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor /// CurTokenLexer pointers. 744d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor void recomputeCurLexerKind(); 745e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 746e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// \brief Returns true if incremental processing is enabled 747e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann bool isIncrementalProcessingEnabled() const { return IncrementalProcessing; } 748e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann 749e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann /// \brief Enables the incremental processing 750e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann void enableIncrementalProcessing(bool value = true) { 751e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann IncrementalProcessing = value; 752e55329d6834647ba0e06f8a319e5d84c77310035Axel Naumann } 753d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor 7542968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \brief Specify the point at which code-completion will be performed. 7552968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7562968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param File the file in which code completion should occur. If 7572968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// this file is included multiple times, code-completion will 7582968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// perform completion the first time it is included. If NULL, this 7592968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// function clears out the code-completion point. 7602968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7612968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param Line the line at which code completion should occur 7622968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// (1-based). 7632968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7642968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param Column the column at which code completion should occur 7652968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// (1-based). 7662968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7672968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \returns true if an error occurred, false otherwise. 768a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam bool SetCodeCompletionPoint(const FileEntry *File, 7692968442603b029949246467253eeac8139a5b6d8Douglas Gregor unsigned Line, unsigned Column); 7702968442603b029949246467253eeac8139a5b6d8Douglas Gregor 7713437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis /// \brief Determine if we are performing code completion. 7723437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool isCodeCompletionEnabled() const { return CodeCompletionFile != 0; } 7733437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis 7747d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns the location of the code-completion point. 7757d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// Returns an invalid location if code-completion is not enabled or the file 7767d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// containing the code-completion point has not been lexed yet. 7777d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation getCodeCompletionLoc() const { return CodeCompletionLoc; } 7787d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7797d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns the start location of the file of code-completion point. 7807d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// Returns an invalid location if code-completion is not enabled or the file 7817d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// containing the code-completion point has not been lexed yet. 7827d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation getCodeCompletionFileLoc() const { 7837d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return CodeCompletionFileLoc; 7847d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis } 7857d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7867d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns true if code-completion is enabled and we have hit the 7877d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// code-completion point. 7887d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis bool isCodeCompletionReached() const { return CodeCompletionReached; } 7897d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7907d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Note that we hit the code-completion point. 791d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer void setCodeCompletionReached() { 792d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer assert(isCodeCompletionEnabled() && "Code-completion not enabled!"); 793d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer CodeCompletionReached = true; 794d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer // Silence any diagnostics that occur after we hit the code-completion. 795d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer getDiagnostics().setSuppressAllDiagnostics(true); 796d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer } 7977d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 798809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \brief The location of the currently-active \#pragma clang 7998dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// arc_cf_code_audited begin. Returns an invalid location if there 8008dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// is no such pragma active. 8018dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation getPragmaARCCFCodeAuditedLoc() const { 8028dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall return PragmaARCCFCodeAuditedLoc; 8038dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 8048dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 805809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \brief Set the location of the currently-active \#pragma clang 8068dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// arc_cf_code_audited begin. An invalid location ends the pragma. 8078dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall void setPragmaARCCFCodeAuditedLoc(SourceLocation Loc) { 8088dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PragmaARCCFCodeAuditedLoc = Loc; 8098dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 8108dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 811809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \brief Instruct the preprocessor to skip part of the main source file. 812f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// 813809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \param Bytes The number of bytes in the preamble to skip. 814f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// 815809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \param StartOfLine Whether skipping these bytes puts the lexer at the 816f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// start of a line. 817ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setSkipMainFilePreamble(unsigned Bytes, bool StartOfLine) { 818f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor SkipMainFilePreamble.first = Bytes; 819f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor SkipMainFilePreamble.second = StartOfLine; 820f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor } 821ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 8225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Diag - Forwarding function for diagnostics. This emits a diagnostic at 823d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner /// the specified Token's location, translating the token's start 8245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// position in the current buffer into a SourcePosition object for rendering. 825d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) const { 826d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer return Diags->Report(Loc, DiagID); 827d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer } 8281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 829d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID) const { 830d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer return Diags->Report(Tok.getLocation(), DiagID); 831d7a3e2c5f61cd4893f95b69a424fe4def3aa0f69Benjamin Kramer } 8321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 833834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// getSpelling() - Return the 'spelling' of the token at the given 834834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// location; does not go up to the spelling location or down to the 8359e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// expansion location. 83630900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// 837834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// \param buffer A buffer which will be used only if the token requires 838834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// "cleaning", e.g. if it contains trigraphs or escaped newlines 83930900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// \param invalid If non-null, will be set \c true if an error occurs. 840686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getSpelling(SourceLocation loc, 841686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<char> &buffer, 842834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall bool *invalid = 0) const { 8434e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getSpelling(loc, buffer, SourceMgr, LangOpts, invalid); 844834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall } 84530900dafbe972f4802c2663262b4393edab0d1cdJohn McCall 8465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling() - Return the 'spelling' of the Tok token. The spelling of a 8475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// token is the characters used to represent the token in the source file 8485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// after trigraph expansion and escaped-newline folding. In particular, this 8495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// wants to get the true, uncanonicalized, spelling of things like digraphs 8505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// UCNs, etc. 85150f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor /// 85230900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// \param Invalid If non-null, will be set \c true if an error occurs. 853b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner std::string getSpelling(const Token &Tok, bool *Invalid = 0) const { 8544e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getSpelling(Tok, SourceMgr, LangOpts, Invalid); 855b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner } 8560ff1042ddaad1419264be0de6da17f3b378482a4Daniel Dunbar 8575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling - This method is used to get the spelling of a token into a 8585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// preallocated buffer, instead of as an std::string. The caller is required 8595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to allocate enough space for the token, which is guaranteed to be at least 8605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Tok.getLength() bytes long. The length of the actual result is returned. 8615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 8625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Note that this method may do two possible things: it may either fill in 8635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the buffer specified with characters, or it may *change the input pointer* 8645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to point to a constant buffer with the data already in it (avoiding a 8655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// copy). The caller is not allowed to modify the returned buffer pointer 8665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// if an internal buffer is returned. 867ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie unsigned getSpelling(const Token &Tok, const char *&Buffer, 86848cf9824fbad42995f4d91d59d08d2620effd683Chris Lattner bool *Invalid = 0) const { 8694e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getSpelling(Tok, Buffer, SourceMgr, LangOpts, Invalid); 87048cf9824fbad42995f4d91d59d08d2620effd683Chris Lattner } 871b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 872ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// getSpelling - This method is used to get the spelling of a token into a 873ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// SmallVector. Note that the returned StringRef may not point to the 874ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// supplied buffer if a copy can be avoided. 875686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getSpelling(const Token &Tok, 876f4fb07ed4dfd144a39d904fc77b3b0bab580eb2eNico Weber SmallVectorImpl<char> &Buffer, 877f4fb07ed4dfd144a39d904fc77b3b0bab580eb2eNico Weber bool *Invalid = 0) const; 878ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer 8797216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// getSpellingOfSingleCharacterNumericConstant - Tok is a numeric constant 8807216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// with length 1, return the character. 881ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie char getSpellingOfSingleCharacterNumericConstant(const Token &Tok, 88250f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor bool *Invalid = 0) const { 8837216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(Tok.is(tok::numeric_constant) && 8847216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner Tok.getLength() == 1 && "Called on unsupported token"); 8857216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(!Tok.needsCleaning() && "Token can't need cleaning with length 1"); 8867216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner 8877216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // If the token is carrying a literal data pointer, just use it. 8887216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner if (const char *D = Tok.getLiteralData()) 8897216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *D; 89028396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek 8917216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // Otherwise, fall back on getCharacterData, which is slower, but always 8927216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // works. 893a543016fe07030f695d6d56fd22c8c8da617e0d7Douglas Gregor return *SourceMgr.getCharacterData(Tok.getLocation(), Invalid); 89428396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek } 8951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 896c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// \brief Retrieve the name of the immediate macro expansion. 897c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// 898c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// This routine starts from a source location, and finds the name of the macro 899c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// responsible for its immediate expansion. It looks through any intervening 900c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// macro argument expansions to compute this. It returns a StringRef which 901c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// refers to the SourceManager-owned buffer of the source where that macro 902c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// name is spelled. Thus, the result shouldn't out-live the SourceManager. 903c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks StringRef getImmediateMacroName(SourceLocation Loc) { 9044e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getImmediateMacroName(Loc, SourceMgr, getLangOpts()); 905c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks } 906c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks 90747246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// CreateString - Plop the specified string into a scratch buffer and set the 90847246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// specified token's location and length to it. If specified, the source 9099e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// location provides a location of the expansion point of the token. 910a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara void CreateString(const char *Buf, unsigned Len, Token &Tok, 911a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara SourceLocation ExpansionLocStart = SourceLocation(), 912a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara SourceLocation ExpansionLocEnd = SourceLocation()); 913b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 914b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// \brief Computes the source location just past the end of the 915b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token at this source location. 916b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// 917b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// This routine can be used to produce a source location that 918b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// points just past the end of the token referenced by \p Loc, and 919b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// is generally used when a diagnostic needs to point just after a 920b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token where it expected something different that it received. If 921b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// the returned source location would not be meaningful (e.g., if 922b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// it points into a macro), this routine returns an invalid 923b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// source location. 92433e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// 92533e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// \param Offset an offset from the end of the token, where the source 92633e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// location should refer to. The default offset (0) produces a source 92733e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// location pointing just past the end of the token; an offset of 1 produces 92833e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// a source location pointing to the last character in the token, etc. 9297ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset = 0) { 9304e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::getLocForEndOfToken(Loc, Offset, SourceMgr, LangOpts); 9317ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner } 9321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9337a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis /// \brief Returns true if the given MacroID location points at the first 9349e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// token of the macro expansion. 93569bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// 93669bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// \param MacroBegin If non-null and function returns true, it is set to 93769bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// begin location of the macro. 93869bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis bool isAtStartOfMacroExpansion(SourceLocation loc, 93969bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis SourceLocation *MacroBegin = 0) const { 9404e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::isAtStartOfMacroExpansion(loc, SourceMgr, LangOpts, 94169bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis MacroBegin); 9427a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis } 9437a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis 9447a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis /// \brief Returns true if the given MacroID location points at the last 9459e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// token of the macro expansion. 94669bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// 947ad0fe03b897f9486191e75c8d90c3ffa9b4fd6a5Ted Kremenek /// \param MacroEnd If non-null and function returns true, it is set to 94869bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// end location of the macro. 94969bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis bool isAtEndOfMacroExpansion(SourceLocation loc, 95069bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis SourceLocation *MacroEnd = 0) const { 9514e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::isAtEndOfMacroExpansion(loc, SourceMgr, LangOpts, MacroEnd); 9527a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis } 9537a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis 9545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// DumpToken - Print the token to stderr, used for debugging. 9555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 956d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void DumpToken(const Token &Tok, bool DumpFlags = false) const; 957c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner void DumpLocation(SourceLocation Loc) const; 9585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void DumpMacro(const MacroInfo &MI) const; 9591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 96097ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// AdvanceToTokenCharacter - Given a location that specifies the start of a 96197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// token, return a new location that specifies a character within the token. 962872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart, 963872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner unsigned Char) const { 9644e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie return Lexer::AdvanceToTokenCharacter(TokStart, Char, SourceMgr, LangOpts); 965872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner } 966872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner 9675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncrementPasteCounter - Increment the counters for the number of token 9685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// paste operations performed. If fast was specified, this is a 'fast paste' 9695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// case we handled. 9701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 9715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void IncrementPasteCounter(bool isFast) { 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isFast) 9735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFastTokenPaste; 9745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 9755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumTokenPaste; 9765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void PrintStats(); 9795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 980c5c5e92ec53f7e6ac7ebbbf77c6d8e4b7d88daecArgyrios Kyrtzidis size_t getTotalMemory() const; 981c5c5e92ec53f7e6ac7ebbbf77c6d8e4b7d88daecArgyrios Kyrtzidis 9823f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// HandleMicrosoftCommentPaste - When the macro expander pastes together a 9833f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// comment (/##/) in microsoft mode, this method handles updating the current 9843f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// state, returning the token on the next source line. 9853f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner void HandleMicrosoftCommentPaste(Token &Tok); 9861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 9885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Preprocessor callback methods. These are invoked by a lexer as various 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // directives and events are found. 9905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 991c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// LookUpIdentifierInfo - Given a tok::raw_identifier token, look up the 992c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// identifier information for the token and install it into the token, 993c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// updating the token kind accordingly. 994c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara IdentifierInfo *LookUpIdentifierInfo(Token &Identifier) const; 9951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleyprivate: 99728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley llvm::DenseMap<IdentifierInfo*,unsigned> PoisonReasons; 99828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 99928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleypublic: 100028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 100128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // SetPoisonReason - Call this function to indicate the reason for 100228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // poisoning an identifier. If that identifier is accessed while 100328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // poisoned, then this reason will be used instead of the default 100428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // "poisoned" diagnostic. 100528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void SetPoisonReason(IdentifierInfo *II, unsigned DiagID); 100628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 100728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // HandlePoisonedIdentifier - Display reason for poisoned 100828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // identifier. 100928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void HandlePoisonedIdentifier(Token & Tok); 101028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 101128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void MaybeHandlePoisonedIdentifier(Token & Identifier) { 101228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(IdentifierInfo * II = Identifier.getIdentifierInfo()) { 101328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(II->isPoisoned()) { 101428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley HandlePoisonedIdentifier(Identifier); 101528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 101628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 101728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 101828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 101928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleyprivate: 102028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley /// Identifiers used for SEH handling in Borland. These are only 102128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley /// allowed in particular circumstances 1022ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __except block 1023ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__exception_code, 1024ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___exception_code, 1025ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_GetExceptionCode; 1026ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __except filter expression 1027ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__exception_info, 1028ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___exception_info, 1029ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_GetExceptionInfo; 1030ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __finally 1031ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__abnormal_termination, 1032ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___abnormal_termination, 1033ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_AbnormalTermination; 103428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleypublic: 103528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void PoisonSEHIdentifiers(bool Poison = true); // Borland 103628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 10375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleIdentifier - This callback is invoked when the lexer reads an 10385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier and has filled in the tokens IdentifierInfo member. This 10395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// callback potentially macro expands it or turns it into a named token (like 10405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 'for'). 1041d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentifier(Token &Identifier); 10425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 10431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleEndOfFile - This callback is invoked when the lexer hits the end of 10455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the current file. This either returns the EOF token and returns true, or 10465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pops a level off the include stack and returns false, at which point the 10475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// client should call lex again. 1048d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleEndOfFile(Token &Result, bool isEndOfMacro = false); 10491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1050fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// HandleEndOfTokenLexer - This callback is invoked when the current 1051fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// TokenLexer hits the end of its token stream. 1052fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner bool HandleEndOfTokenLexer(Token &Result); 10531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleDirective - This callback is invoked when the lexer sees a # token 10551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// at the start of a line. This consumes the directive, modifies the 10565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer/preprocessor state, and advances the lexer(s) so that the next token 10575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// read is the correct one. 1058d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleDirective(Token &Result); 10595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 106084021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// CheckEndOfDirective - Ensure that the next token is a tok::eod token. If 106184021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// not, emit a diagnostic and consume up until the eod. If EnableMacros is 1062ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner /// true, then we consider macros that expand to zero tokens as being ok. 1063ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner void CheckEndOfDirective(const char *Directive, bool EnableMacros = false); 10641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1065478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// DiscardUntilEndOfDirective - Read and discard all tokens remaining on the 106684021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// current line until the tok::eod token is found. 1067478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void DiscardUntilEndOfDirective(); 10681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10697c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// SawDateOrTime - This returns true if the preprocessor has seen a use of 10707c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// __DATE__ or __TIME__ in the file so far. 10717c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner bool SawDateOrTime() const { 10727c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner return DATELoc != SourceLocation() || TIMELoc != SourceLocation(); 10737c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner } 1074c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned getCounterValue() const { return CounterValue; } 1075c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner void setCounterValue(unsigned V) { CounterValue = V; } 10761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 107790db26000aefe9335370013eec64c85232d80227Douglas Gregor /// \brief Retrieves the module that we're currently building, if any. 107890db26000aefe9335370013eec64c85232d80227Douglas Gregor Module *getCurrentModule(); 107990db26000aefe9335370013eec64c85232d80227Douglas Gregor 108058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Allocate a new MacroInfo object with the provided SourceLocation. 1081f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *AllocateMacroInfo(SourceLocation L); 1082f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 108358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Allocate a new MacroInfo object which is clone of \p MI. 1084f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *CloneMacroInfo(const MacroInfo &MI); 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108658bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Turn the specified lexer token into a fully checked and spelled 108758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// filename, e.g. as an operand of \#include. 108858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 108958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// The caller is expected to provide a buffer that is large enough to hold 109058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// the spelling of the filename, but is also expected to handle the case 109158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// when this method decides to use a different buffer. 109258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 109358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \returns true if the input filename was in <>'s or false if it was 109458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// in ""'s. 1095686775deca8b8685eb90801495880e3abdd844c2Chris Lattner bool GetIncludeFilenameSpelling(SourceLocation Loc,StringRef &Filename); 1096a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 109758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Given a "foo" or \<foo> reference, look up the indicated file. 109858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 109958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// Returns null on failure. \p isAngled indicates whether the file 110058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// reference is for system \#include's or not (i.e. using <> instead of ""). 1101686775deca8b8685eb90801495880e3abdd844c2Chris Lattner const FileEntry *LookupFile(StringRef Filename, 1102f45b646244705410866d62f1d8bf017a047ed662Chris Lattner bool isAngled, const DirectoryLookup *FromDir, 1103b5142bb7af5c70fffd09f05172a1379a35a9c29aChandler Carruth const DirectoryLookup *&CurDir, 1104686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<char> *SearchPath, 1105fba18aa8f2cd1994dc65e8cb9f4be201c560dc0bDouglas Gregor SmallVectorImpl<char> *RelativePath, 11061a4761edca58c6b559de825b9abfb66f7f1ba94aDouglas Gregor Module **SuggestedModule, 11071c2e9332fa69727425a3a2b912e36e2ab62083f8Douglas Gregor bool SkipCache = false); 1108a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 1109a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// GetCurLookup - The DirectoryLookup structure used to find the current 1110a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 111158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// implement \#include_next and find directory-specific properties. 1112a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const DirectoryLookup *GetCurDirLookup() { return CurDirLookup; } 1113a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 111458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Return true if we're in the top-level file, not in a \#include. 1115a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool isInPrimaryFile() const; 1116a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 111758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// ConcatenateIncludeName - Handle cases where the \#include name is expanded 1118a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// from a macro as multiple tokens, which need to be glued together. This 1119a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// occurs for code like: 112058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \code 112170517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko /// \#define FOO <x/y.h> 112258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#include FOO 112358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \endcode 112470517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko /// because in this case, "<x/y.h>" is returned as 7 tokens, not one. 1125a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// 1126321c2688198f6f1a4086964e505f239683423cecChris Lattner /// This code concatenates and consumes tokens up to the '>' token. It 1127321c2688198f6f1a4086964e505f239683423cecChris Lattner /// returns false if the > was found, otherwise it returns true if it finds 112884021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// and consumes the EOD marker. 1129f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith bool ConcatenateIncludeName(SmallString<128> &FilenameBuffer, 1130ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor SourceLocation &End); 1131a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 11329d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne /// LexOnOffSwitch - Lex an on-off-switch (C99 6.10.6p2) and verify that it is 113384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// followed by EOD. Return true if the token is not a valid on-off-switch. 11349d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne bool LexOnOffSwitch(tok::OnOffSwitch &OOS); 11359d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 11365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 11371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1138d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PushIncludeMacroStack() { 1139b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor IncludeMacroStack.push_back(IncludeStackInfo(CurLexerKind, 1140b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CurLexer.take(), 11419c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.take(), 11429c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer, 11439c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurTokenLexer.take(), 11449c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup)); 1145f89963b1e819d5e73796a4f9d7cd70129846e2ecTed Kremenek CurPPLexer = 0; 1146d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 11471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1148d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PopIncludeMacroStack() { 1149caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurLexer.reset(IncludeMacroStack.back().TheLexer); 11509c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.reset(IncludeMacroStack.back().ThePTHLexer); 11519c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer = IncludeMacroStack.back().ThePPLexer; 1152caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurTokenLexer.reset(IncludeMacroStack.back().TheTokenLexer); 11539c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup = IncludeMacroStack.back().TheDirLookup; 1154b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CurLexerKind = IncludeMacroStack.back().CurLexerKind; 1155d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek IncludeMacroStack.pop_back(); 1156d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 11571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 115858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Allocate a new MacroInfo object. 1159f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *AllocateMacroInfo(); 1160f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 116158bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Release the specified MacroInfo for re-use. 116258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// 116358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// This memory will be reused for allocating new MacroInfo objects. 11640301b3ff132a4d986c092d161cb77d74b04cd2a6Chris Lattner void ReleaseMacroInfo(MacroInfo* MI); 11651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroName - Lex and validate a macro name, which occurs after a 116758bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#define or \#undef. This emits a diagnostic, sets the token kind to eod, 11685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and discards the rest of the macro line if the macro name is invalid. 1169d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ReadMacroName(Token &MacroNameTok, char isDefineUndef = 0); 11701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroDefinitionArgList - The ( starting an argument list of a macro 11725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// definition has just been read. Lex the rest of the arguments and the 1173e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara /// closing ), updating MI with what we learn and saving in LastTok the 1174e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara /// last token read. 1175e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara /// Return true if an error occurs parsing the arg list. 1176e2e8768c290ceceb3ac2e369b5243f40d6c0e3e2Abramo Bagnara bool ReadMacroDefinitionArgList(MacroInfo *MI, Token& LastTok); 11771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 117858bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// We just read a \#if or related directive and decided that the 117958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// subsequent tokens are in the \#if'd out portion of the 118058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// file. Lex the rest of the file, until we see an \#endif. If \p 11815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundNonSkipPortion is true, then we have already emitted code for part of 118258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// this \#if directive, so \#else/\#elif blocks should never be entered. If 118358bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \p FoundElse is false, then \#else directives are ok, if not, then we have 118458bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// already seen one so a \#else directive is a duplicate. When this returns, 11855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the caller can lex the first valid token. 11865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SkipExcludedConditionalBlock(SourceLocation IfTokenLoc, 11876b4ff04dd22e7159887ea6c1bb8b1c01fc9c70a9Argyrios Kyrtzidis bool FoundNonSkipPortion, bool FoundElse, 11886b4ff04dd22e7159887ea6c1bb8b1c01fc9c70a9Argyrios Kyrtzidis SourceLocation ElseLoc = SourceLocation()); 11891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 119058bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief A fast PTH version of SkipExcludedConditionalBlock. 1191268ee7016a2811803989487c0ad3799486092c63Ted Kremenek void PTHSkipExcludedConditionalBlock(); 11921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateDirectiveExpression - Evaluate an integer constant expression that 11945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// may occur after a #if or #elif directive and return it as a bool. If the 11955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression is equivalent to "!defined(X)" return X in IfNDefMacro. 11965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool EvaluateDirectiveExpression(IdentifierInfo *&IfNDefMacro); 11971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 119958bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \#pragma GCC poison/system_header/dependency and \#pragma once. 12005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinPragmas(); 12011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 120258bf98725b6d4588338e191d2ab981b104471dabJames Dennett /// \brief Register builtin macros such as __LINE__ with the identifier table. 12035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinMacros(); 12041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleMacroExpandedIdentifier - If an identifier token is read that is to 12065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// be expanded as a macro, handle it and return the next token as 'Tok'. If 12075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the macro should not be expanded return true, otherwise return false. 1208d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleMacroExpandedIdentifier(Token &Tok, MacroInfo *MI); 12091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12105b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// \brief Cache macro expanded tokens for TokenLexers. 12115b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis // 12125b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// Works like a stack; a TokenLexer adds the macro expanded tokens that is 12135b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// going to lex in the cache and when it finishes the tokens are removed 12145b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// from the end of the cache. 12155b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis Token *cacheMacroExpandedTokens(TokenLexer *tokLexer, 12162d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<Token> tokens); 12175b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis void removeCachedMacroExpandedTokensOfLastLexer(); 12185b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis friend void TokenLexer::ExpandFunctionArguments(); 12195b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis 12205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isNextPPTokenLParen - Determine whether the next preprocessor token to be 12215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexed is a '('. If so, consume the token and return true, if not, this 12225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// method should have no observable side-effect on the lexed tokens. 12235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isNextPPTokenLParen(); 12241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadFunctionLikeMacroArgs - After reading "MACRO(", this method is 12265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invoked to read all of the formal arguments specified for the macro 12275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invocation. This returns null on error. 1228e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner MacroArgs *ReadFunctionLikeMacroArgs(Token &MacroName, MacroInfo *MI, 12299e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth SourceLocation &ExpansionEnd); 12305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExpandBuiltinMacro - If an identifier token is read that is to be expanded 12325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// as a builtin macro, handle it and return the next token as 'Tok'. 1233d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ExpandBuiltinMacro(Token &Tok); 12341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 12365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// return the first token after the directive. The _Pragma token has just 12375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// been read into 'Tok'. 1238d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Handle_Pragma(Token &Tok); 12391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12401ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall /// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 12411ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall /// is not enclosed within a string literal. 12421ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall void HandleMicrosoft__pragma(Token &Tok); 12431ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 12445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFileWithLexer - Add a lexer to the top of the include stack and 12455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. 12465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EnterSourceFileWithLexer(Lexer *TheLexer, const DirectoryLookup *Dir); 12476137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 12486137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// EnterSourceFileWithPTH - Add a lexer to the top of the include stack and 12496137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// start getting tokens from it using the PTH cache. 12506137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek void EnterSourceFileWithPTH(PTHLexer *PL, const DirectoryLookup *Dir); 12511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 125234eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// IsFileLexer - Returns true if we are lexing from a file and not a 125334eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// pragma or a macro. 125434eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek static bool IsFileLexer(const Lexer* L, const PreprocessorLexer* P) { 125534eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek return L ? !L->isPragmaLexer() : P != 0; 125641938c8493b4380df738263166b746eacb33c309Ted Kremenek } 125741938c8493b4380df738263166b746eacb33c309Ted Kremenek 125881d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek static bool IsFileLexer(const IncludeStackInfo& I) { 125981d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(I.TheLexer, I.ThePPLexer); 126041938c8493b4380df738263166b746eacb33c309Ted Kremenek } 126141938c8493b4380df738263166b746eacb33c309Ted Kremenek 126281d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek bool IsFileLexer() const { 126381d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(CurLexer.get(), CurPPLexer); 126441938c8493b4380df738263166b746eacb33c309Ted Kremenek } 12651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 126703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis // Caching stuff. 126803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void CachingLex(Token &Result); 126903569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis bool InCachingLexMode() const { 127003569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis // If the Lexer pointers are 0 and IncludeMacroStack is empty, it means 127103569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis // that we are past EOF, not that we are in CachingLex mode. 1272ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie return CurPPLexer == 0 && CurTokenLexer == 0 && CurPTHLexer == 0 && 127356eb1ec6e54080e47bbc62412737c25afb5211edTed Kremenek !IncludeMacroStack.empty(); 127403569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis } 127503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void EnterCachingLexMode(); 127603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void ExitCachingLexMode() { 127703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (InCachingLexMode()) 127803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis RemoveTopOfLexerStack(); 127903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis } 128003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &PeekAhead(unsigned N); 12813604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotatePreviousCachedTokens(const Token &Tok); 128203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 128303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 12845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle*Directive - implement the various preprocessor directives. These 12855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// should side-effect the current preprocessor object so that the next call 12865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to Lex() will return the appropriate token next. 1287359cc4475487ea0a660b3e8918334a2866e71c66Chris Lattner void HandleLineDirective(Token &Tok); 1288478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void HandleDigitDirective(Token &Tok); 1289d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUserDiagnosticDirective(Token &Tok, bool isWarning); 1290d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentSCCSDirective(Token &Tok); 129194ad28b31433058445a27db722f60402ee820beaDouglas Gregor void HandleMacroPublicDirective(Token &Tok); 1292aa93a875605536d72a10359a0098396192b7d4ecDouglas Gregor void HandleMacroPrivateDirective(Token &Tok); 1293ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 12945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // File inclusion. 1295ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeDirective(SourceLocation HashLoc, 1296ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor Token &Tok, 12975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *LookupFrom = 0, 12985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isImport = false); 1299ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeNextDirective(SourceLocation HashLoc, Token &Tok); 1300ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeMacrosDirective(SourceLocation HashLoc, Token &Tok); 1301ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleImportDirective(SourceLocation HashLoc, Token &Tok); 13024207edaf03da28fa917a94b31c5c1eef0e6417dcAaron Ballman void HandleMicrosoftImportDirective(Token &Tok); 13031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro handling. 130542e6737f2efb113563140ad794c21c7709250402Chris Lattner void HandleDefineDirective(Token &Tok); 1306d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUndefDirective(Token &Tok); 13071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Conditional Inclusion. 1309d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfdefDirective(Token &Tok, bool isIfndef, 13105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadAnyTokensBeforeDirective); 1311d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfDirective(Token &Tok, bool ReadAnyTokensBeforeDirective); 1312d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleEndifDirective(Token &Tok); 1313d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElseDirective(Token &Tok); 1314d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElifDirective(Token &Tok); 13151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Pragmas. 131780c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor void HandlePragmaDirective(unsigned Introducer); 13185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 1319d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaOnce(Token &OnceTok); 13202243449253475574fc6f14986ff8f7fce5d46799Chris Lattner void HandlePragmaMark(); 1321d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaPoison(Token &PoisonTok); 1322d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaSystemHeader(Token &SysHeaderTok); 1323d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaDependency(Token &DependencyTok); 1324636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner void HandlePragmaComment(Token &CommentTok); 1325abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner void HandlePragmaMessage(Token &MessageTok); 1326f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner void HandlePragmaPushMacro(Token &Tok); 1327f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner void HandlePragmaPopMacro(Token &Tok); 13284c55c54db8e676aa3e042188773d9d82d59fff91Aaron Ballman void HandlePragmaIncludeAlias(Token &Tok); 1329f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *ParsePragmaPushOrPopMacro(Token &Tok); 1330f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1331046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // Return true and store the first token only if any CommentHandler 1332046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // has inserted some tokens and getCommentRetentionState() is false. 1333046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner bool HandleComment(Token &Token, SourceRange Comment); 13340827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis 13350827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// \brief A macro is used, update information about macros that need unused 13360827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// warnings. 13370827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis void markMacroAsUsed(MacroInfo *MI); 13385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 13395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \brief Abstract base class that describes a handler that will receive 13412e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor/// source ranges for each of the comments encountered in the source file. 13422e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler { 13432e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorpublic: 13442e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor virtual ~CommentHandler(); 13451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1346046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // The handler shall return true if it has pushed any tokens 1347046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // to be read using e.g. EnterToken or EnterTokenStream. 1348046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner virtual bool HandleComment(Preprocessor &PP, SourceRange Comment) = 0; 13492e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor}; 13501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 13525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 13535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 1354