Preprocessor.h revision 8fe83e1df954d72c0f4ffc15d20a5222ec151c21
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" 24c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#include "clang/Basic/IdentifierTable.h" 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceLocation.h" 26cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner#include "llvm/ADT/DenseMap.h" 274f32786ac45210143654390177105eb749b614e9Ted Kremenek#include "llvm/ADT/IntrusiveRefCntPtr.h" 280827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis#include "llvm/ADT/SmallPtrSet.h" 29caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek#include "llvm/ADT/OwningPtr.h" 30f4d5eb4866a27d497f0bb75b12c2ffd48ad4d9c0Benjamin Kramer#include "llvm/ADT/SmallVector.h" 315b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis#include "llvm/ADT/ArrayRef.h" 320ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek#include "llvm/Support/Allocator.h" 332e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor#include <vector> 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 358fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramernamespace llvm { 368fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer template<unsigned InternalLen> class SmallString; 378fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer} 388fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass SourceManager; 4288a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregorclass ExternalPreprocessorSource; 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileManager; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileEntry; 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass HeaderSearch; 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaNamespace; 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaHandler; 482e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ScratchBuffer; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass TargetInfo; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PPCallbacks; 52f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregorclass CodeCompletionHandler; 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass DirectoryLookup; 5494dc8f640ebea52241412512ed48601626edbc58Douglas Gregorclass PreprocessingRecord; 556aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregorclass ModuleLoader; 56ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 57e5956bd2730c051835f9acd9e957c5d79f99e7c3Chris Lattner/// Preprocessor - This object engages in a tight little dance with the lexer to 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// efficiently preprocess tokens. Lexers know only about tokens within a 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// single source file, and don't know anything about preprocessor-level issues 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// like the #include stack, token expansion, etc. 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 624f32786ac45210143654390177105eb749b614e9Ted Kremenekclass Preprocessor : public llvm::RefCountedBase<Preprocessor> { 63fdd15602a42bbe26185978ef1e17019f6d969aa7Benjamin Kramer DiagnosticsEngine *Diags; 643e3cd93b2fd9644e970c389e715c13883faf68b6Douglas Gregor LangOptions &Features; 65998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo *Target; 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &FileMgr; 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &SourceMgr; 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuffer *ScratchBuf; 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &HeaderInfo; 706aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &TheModuleLoader; 711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7288a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor /// \brief External source of macros. 7388a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalPreprocessorSource *ExternalSource; 74a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 75ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 766137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// PTH - An optional PTHManager object used for getting tokens from 776137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// a token cache rather than lexing the original source file. 786137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek llvm::OwningPtr<PTHManager> PTH; 791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 800ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// BP - A BumpPtrAllocator object used to quickly allocate and release 810ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// objects internal to the Preprocessor. 820ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek llvm::BumpPtrAllocator BP; 831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers for builtin macros and other builtins. 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__LINE__, *Ident__FILE__; // __LINE__, __FILE__ 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__DATE__, *Ident__TIME__; // __DATE__, __TIME__ 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__INCLUDE_LEVEL__; // __INCLUDE_LEVEL__ 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__BASE_FILE__; // __BASE_FILE__ 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__TIMESTAMP__; // __TIMESTAMP__ 90c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner IdentifierInfo *Ident__COUNTER__; // __COUNTER__ 911ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall IdentifierInfo *Ident_Pragma, *Ident__pragma; // _Pragma, __pragma 921ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall IdentifierInfo *Ident__VA_ARGS__; // __VA_ARGS__ 93148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_feature; // __has_feature 94c1b5fa41f09512c74030b9a2a0d1564535e22a76Peter Collingbourne IdentifierInfo *Ident__has_extension; // __has_extension 95148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_builtin; // __has_builtin 96cae5095c116c29a4e52c91fa0ad88df09dd2b45fAnders Carlsson IdentifierInfo *Ident__has_attribute; // __has_attribute 9792bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include; // __has_include 9892bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include_next; // __has_include_next 99d768150ef57f617c8d9fef48f3c92e8f21698024Ted Kremenek IdentifierInfo *Ident__has_warning; // __has_warning 1001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DATELoc, TIMELoc; 102c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned CounterValue; // Next __COUNTER__ value. 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum { 1055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// MaxIncludeStackDepth - Maximum depth of #includes. 1065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxAllowedIncludeStackDepth = 200 1075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that is set before the preprocessor begins. 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepComments : 1; 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepMacroComments : 1; 112f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman bool SuppressIncludeNotFoundError : 1; 113ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that changes while the preprocessor runs: 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool InMacroArgs : 1; // True if parsing fn macro invocation args. 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1175814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar /// Whether the preprocessor owns the header search object. 1185814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar bool OwnsHeaderSearch : 1; 1195814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar 1201d9c54df56391ac4740db27d551782e81189cb51Chris Lattner /// DisableMacroExpansion - True if macro expansion is disabled. 1211d9c54df56391ac4740db27d551782e81189cb51Chris Lattner bool DisableMacroExpansion : 1; 1221d9c54df56391ac4740db27d551782e81189cb51Chris Lattner 12388a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor /// \brief Whether we have already loaded macros from the external source. 12488a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor mutable bool ReadMacrosFromExternalSource : 1; 125a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers - This is mapping/lookup information for all identifiers in 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the program, including program keywords. 128c3222091e1ffa35d0264ca6b680a88c9dc84ede2Daniel Dunbar mutable IdentifierTable Identifiers; 1291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13068d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// Selectors - This table contains all the selectors in the program. Unlike 13168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// IdentifierTable above, this table *isn't* populated by the preprocessor. 1329e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// It is declared/expanded here because it's role/lifetime is 13368d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// conceptually similar the IdentifierTable. In addition, the current control 1341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// flow (in clang::ParseAST()), make it convenient to put here. 13568d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// FIXME: Make sure the lifetime of Identifiers/Selectors *isn't* tied to 136083abdf67f157e9d2ab5a8c9d5e71240479d3c99Sebastian Redl /// the lifetime of the preprocessor. 13729238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable Selectors; 1382e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 1391b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner /// BuiltinInfo - Information about builtins. 1401b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context BuiltinInfo; 1411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// PragmaHandlers - This tracks all of the pragmas that the client registered 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// with this preprocessor. 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *PragmaHandlers; 1451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Tracks all of the comment handlers that the client registered 1472e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// with this preprocessor. 1482e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor std::vector<CommentHandler *> CommentHandlers; 1491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 150f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief The code-completion handler. 151f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeCompletionHandler *CodeComplete; 152ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1532968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \brief The file that we're performing code-completion for, if any. 1542968442603b029949246467253eeac8139a5b6d8Douglas Gregor const FileEntry *CodeCompletionFile; 1552968442603b029949246467253eeac8139a5b6d8Douglas Gregor 1567d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The offset in file for the code-completion point. 1577d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis unsigned CodeCompletionOffset; 1587d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 1597d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The location for the code-completion point. This gets instantiated 1607d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// when the CodeCompletionFile gets #include'ed for preprocessing. 1617d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation CodeCompletionLoc; 1627d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 1637d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief The start location for the file of the code-completion point. 1647d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// This gets instantiated when the CodeCompletionFile gets #include'ed 1657d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// for preprocessing. 1667d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation CodeCompletionFileLoc; 1677d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 168c13a34b690d2dc2a03c2fea75a0a1438636c19ceDouglas Gregor /// \brief The source location of the 'import' contextual keyword we just 169c13a34b690d2dc2a03c2fea75a0a1438636c19ceDouglas Gregor /// lexed, if any. 170b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor SourceLocation ModuleImportLoc; 1718dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 172b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// \brief The module import path that we're currently processing. 173b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor llvm::SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> 174b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor ModuleImportPath; 175b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor 176b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// \brief Whether the module import expectes an identifier next. Otherwise, 177b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor /// it expects a '.' or ';'. 178b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor bool ModuleImportExpectsIdentifier; 179b514c792821a8f053027d88444e13bfaa8efef76Douglas Gregor 1808dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// \brief The source location of the currently-active 1818dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// #pragma clang arc_cf_code_audited begin. 1828dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation PragmaARCCFCodeAuditedLoc; 183ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1847d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief True if we hit the code-completion point. 1857d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis bool CodeCompletionReached; 1867d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 187f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// \brief The number of bytes that we will initially skip when entering the 188f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// main file, which is used when loading a precompiled preamble, along 189f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// with a flag that indicates whether skipping this number of bytes will 190f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// place the lexer at the start of a line. 191f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor std::pair<unsigned, bool> SkipMainFilePreamble; 192ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLexer - This is the current top of the stack that we're lexing from if 1949c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding a macro and we are lexing directly from source code. 1959c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 196caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek llvm::OwningPtr<Lexer> CurLexer; 1971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1989c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer - This is the current top of stack that we're lexing from if 1999c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding from a macro and we are lexing from a PTH cache. 2009c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 2019c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek llvm::OwningPtr<PTHLexer> CurPTHLexer; 2021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2039c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPPLexer - This is the current top of the stack what we're lexing from 2049c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// if not expanding a macro. This is an alias for either CurLexer or 2059c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer. 20623f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner PreprocessorLexer *CurPPLexer; 207ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLookup - The DirectoryLookup structure used to find the current 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// implement #include_next and find directory-specific properties. 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDirLookup; 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2136cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurTokenLexer - This is the current macro we are expanding, if we are 2146cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// expanding a macro. One of CurLexer and CurTokenLexer must be null. 215caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek llvm::OwningPtr<TokenLexer> CurTokenLexer; 2161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 217b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor /// \brief The kind of lexer we're currently working with. 218ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie enum CurLexerKind { 219ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_Lexer, 220ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_PTHLexer, 221ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie CLK_TokenLexer, 222b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CLK_CachingLexer, 223b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CLK_LexAfterModuleImport 224b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor } CurLexerKind; 225b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncludeMacroStack - This keeps track of the stack of files currently 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #included, and macros currently being expanded from, not counting 2286cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurLexer/CurTokenLexer. 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct IncludeStackInfo { 230b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor enum CurLexerKind CurLexerKind; 2319c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek Lexer *TheLexer; 2329c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PTHLexer *ThePTHLexer; 2339c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer *ThePPLexer; 2341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TokenLexer *TheTokenLexer; 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *TheDirLookup; 2369c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 237ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IncludeStackInfo(enum CurLexerKind K, Lexer *L, PTHLexer* P, 238b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor PreprocessorLexer* PPL, 2399c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TokenLexer* TL, const DirectoryLookup *D) 240ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie : CurLexerKind(K), TheLexer(L), ThePTHLexer(P), ThePPLexer(PPL), 241b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor TheTokenLexer(TL), TheDirLookup(D) {} 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::vector<IncludeStackInfo> IncludeMacroStack; 2441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Callbacks - These are actions invoked when some preprocessor activity is 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// encountered (e.g. a file is #included, etc). 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *Callbacks; 2481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 249cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// Macros - For each IdentifierInfo with 'HasMacro' set, we keep a mapping 250cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// to the actual definition of the macro. 251cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner llvm::DenseMap<IdentifierInfo*, MacroInfo*> Macros; 2521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2530827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// \brief Macros that we want to warn because they are not used at the end 2540827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// of the translation unit; we store just their SourceLocations instead 2550827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// something like MacroInfo*. The benefit of this is that when we are 2560827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// deserializing from PCH, we don't need to deserialize identifier & macros 2570827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// just so that we can report that they are unused, we just warn using 2580827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// the SourceLocations of this set (that will be filled by the ASTReader). 2590827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// We are using SmallPtrSet instead of a vector for faster removal. 2600827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis typedef llvm::SmallPtrSet<SourceLocation, 32> WarnUnusedMacroLocsTy; 2610827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis WarnUnusedMacroLocsTy WarnUnusedMacroLocs; 2620827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis 26323f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner /// MacroArgCache - This is a "freelist" of MacroArg objects that can be 26423f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner /// reused for quick allocation. 26523f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner MacroArgs *MacroArgCache; 26623f77e59718385512984d4e2a021bef52b9f6ddfChris Lattner friend class MacroArgs; 267ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 268ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// PragmaPushMacroInfo - For each IdentifierInfo used in a #pragma 269ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// push_macro directive, we keep a MacroInfo stack used to restore 270f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner /// previous macro value. 271f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner llvm::DenseMap<IdentifierInfo*, std::vector<MacroInfo*> > PragmaPushMacroInfo; 2721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Various statistics we track for performance analysis. 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumDirectives, NumIncluded, NumDefined, NumUndefined, NumPragma; 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumIf, NumElse, NumEndif; 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumEnteredSourceFiles, MaxIncludeStackDepth; 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumMacroExpanded, NumFnMacroExpanded, NumBuiltinMacroExpanded; 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumFastMacroExpanded, NumTokenPaste, NumFastTokenPaste; 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumSkipped; 2801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 281aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// Predefines - This string is the predefined macros that preprocessor 282aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// should use from the command line etc. 283aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner std::string Predefines; 2841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2856cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// TokenLexerCache - Cache macro expanders to reduce malloc traffic. 2866cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner enum { TokenLexerCacheSize = 8 }; 2876cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner unsigned NumCachedTokenLexers; 2886cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner TokenLexer *TokenLexerCache[TokenLexerCacheSize]; 2899e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis 2905b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// \brief Keeps macro expanded tokens for TokenLexers. 2915b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis // 2925b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// Works like a stack; a TokenLexer adds the macro expanded tokens that is 2935b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// going to lex in the cache and when it finishes the tokens are removed 2945b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// from the end of the cache. 295686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<Token, 16> MacroExpandedTokens; 2965b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis std::vector<std::pair<TokenLexer *, size_t> > MacroExpandingLexersStack; 2975b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis 2989e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// \brief A record of the macro definitions and expansions that 299ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// occurred during preprocessing. 30094dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// 30194dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// This is an optional side structure that can be enabled with 30294dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// \c createPreprocessingRecord() prior to preprocessing. 303b9e1b75772db2c7db566c6034ba90a07f22e35ebDouglas Gregor PreprocessingRecord *Record; 304ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 305e671e1bc73615eda155059a772266ed2882d758cChris Lattnerprivate: // Cached tokens state. 306686775deca8b8685eb90801495880e3abdd844c2Chris Lattner typedef SmallVector<Token, 1> CachedTokensTy; 30703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 30803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedTokens - Cached tokens are stored here when we do backtracking or 30903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// lookahead. They are "lexed" by the CachingLex() method. 31003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy CachedTokens; 31103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 31203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedLexPos - The position of the cached token that CachingLex() should 31303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// "lex" next. If it points beyond the CachedTokens vector, it means that 31403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// a normal Lex() should be invoked. 31503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy::size_type CachedLexPos; 31603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 317a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// BacktrackPositions - Stack of backtrack positions, allowing nested 318a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// backtracks. The EnableBacktrackAtThisPos() method pushes a position to 319a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// indicate where CachedLexPos should be set when the BackTrack() method is 320a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// invoked (at which point the last position is popped). 321a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis std::vector<CachedTokensTy::size_type> BacktrackPositions; 32203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 323af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek struct MacroInfoChain { 324af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfo MI; 325af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfoChain *Next; 3269714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek MacroInfoChain *Prev; 327af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek }; 328af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek 329af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek /// MacroInfos are managed as a chain for easy disposal. This is the head 330af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek /// of that list. 331af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek MacroInfoChain *MIChainHead; 332af8fa25c0d4e0540952a50bbd06dc1558954ccd9Ted Kremenek 3339714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek /// MICache - A "freelist" of MacroInfo objects that can be reused for quick 3349714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek /// allocation. 3359714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek MacroInfoChain *MICache; 3369714a2385cb66b6efa373fc668641de602dd9adbTed Kremenek 337295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor MacroInfo *getInfoForMacro(IdentifierInfo *II) const; 338ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 340d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie Preprocessor(DiagnosticsEngine &diags, LangOptions &opts, 341998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo *target, 34272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek SourceManager &SM, HeaderSearch &Headers, 3436aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &TheModuleLoader, 3445814e657c9ad9ef6049a2a4af0d2aad248a8a15cDaniel Dunbar IdentifierInfoLookup *IILookup = 0, 345998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor bool OwnsHeaderSearch = false, 346998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor bool DelayInitialization = false); 34772b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ~Preprocessor(); 3495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 350998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// \brief Initialize the preprocessor, if the constructor did not already 351998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// perform the initialization. 352998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// 353998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor /// \param Target Information about the target. 354998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor void Initialize(const TargetInfo &Target); 355ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 356d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie DiagnosticsEngine &getDiagnostics() const { return *Diags; } 357d6471f7c1921c7802804ce3ff6fe9768310f72b9David Blaikie void setDiagnostics(DiagnosticsEngine &D) { Diags = &D; } 3587c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner 3595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const LangOptions &getLangOptions() const { return Features; } 360998b3d3e8528ebd9d2c5d78d3a82edd90a8953a4Douglas Gregor const TargetInfo &getTargetInfo() const { return *Target; } 3615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &getFileManager() const { return FileMgr; } 3625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &getSourceManager() const { return SourceMgr; } 3635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &getHeaderSearchInfo() const { return HeaderInfo; } 3645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierTable &getIdentifierTable() { return Identifiers; } 36629238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable &getSelectorTable() { return Selectors; } 3671b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context &getBuiltinInfo() { return BuiltinInfo; } 36832fca722dd974b8202d0fb9c71b6c185c0767da6Chris Lattner llvm::BumpPtrAllocator &getPreprocessorAllocator() { return BP; } 3691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 370337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek void setPTHManager(PTHManager* pm); 3711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 372880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek PTHManager *getPTHManager() { return PTH.get(); } 3732e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 37488a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor void setExternalSource(ExternalPreprocessorSource *Source) { 37588a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalSource = Source; 37688a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor } 377a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 37888a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor ExternalPreprocessorSource *getExternalSource() const { 37988a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor return ExternalSource; 38088a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor } 381a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 3826aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor /// \brief Retrieve the module loader associated with this preprocessor. 3836aa52ec6b969faabf3764baf79d89810b8249a7eDouglas Gregor ModuleLoader &getModuleLoader() const { return TheModuleLoader; } 384ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SetCommentRetentionState - Control whether or not the preprocessor retains 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// comments in output. 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SetCommentRetentionState(bool KeepComments, bool KeepMacroComments) { 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepComments = KeepComments | KeepMacroComments; 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepMacroComments = KeepMacroComments; 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool getCommentRetentionState() const { return KeepComments; } 3931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 394f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman void SetSuppressIncludeNotFoundError(bool Suppress) { 395f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman SuppressIncludeNotFoundError = Suppress; 396f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman } 397f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman 398f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman bool GetSuppressIncludeNotFoundError() { 399f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman return SuppressIncludeNotFoundError; 400f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman } 401f84139a1331c63c998e8b7d54148c75ac0b48ccdEli Friedman 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isCurrentLexer - Return true if we are lexing directly from the specified 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer. 4047062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek bool isCurrentLexer(const PreprocessorLexer *L) const { 4057062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek return CurPPLexer == L; 4065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 408a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// getCurrentLexer - Return the current lexer being lexed from. Note 409a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// that this ignores any potentially active macro expansions and _Pragma 410a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// expansions going on at the time. 411a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson PreprocessorLexer *getCurrentLexer() const { return CurPPLexer; } 412a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 413321c2688198f6f1a4086964e505f239683423cecChris Lattner /// getCurrentFileLexer - Return the current file lexer being lexed from. 414321c2688198f6f1a4086964e505f239683423cecChris Lattner /// Note that this ignores any potentially active macro expansions and _Pragma 4155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansions going on at the time. 41668e48e4a81767997ef0231e47eca4f665102c95eTed Kremenek PreprocessorLexer *getCurrentFileLexer() const; 4171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 418a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam /// getPPCallbacks/addPPCallbacks - Accessors for preprocessor callbacks. 419eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// Note that this class takes ownership of any PPCallbacks object given to 420eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// it. 4215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *getPPCallbacks() const { return Callbacks; } 422a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam void addPPCallbacks(PPCallbacks *C) { 423e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar if (Callbacks) 424e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar C = new PPChainedCallbacks(C, Callbacks); 4255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Callbacks = C; 4265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 428cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// getMacroInfo - Given an identifier, return the MacroInfo it is #defined to 429cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// or null if it isn't #define'd. 430cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner MacroInfo *getMacroInfo(IdentifierInfo *II) const { 431295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor if (!II->hasMacroDefinition()) 432295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor return 0; 433ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 434295a2a617ac335f590e430ab7fcd98f8ce109251Douglas Gregor return getInfoForMacro(II); 435cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 4361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 437cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// setMacroInfo - Specify a macro for this identifier. 438cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// 4395d5051f3e79bf754134ccdf7a1dc7778cd80c73eDouglas Gregor void setMacroInfo(IdentifierInfo *II, MacroInfo *MI, 4405d5051f3e79bf754134ccdf7a1dc7778cd80c73eDouglas Gregor bool LoadedFromAST = false); 4411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 44209b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner /// macro_iterator/macro_begin/macro_end - This allows you to walk the current 44309b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner /// state of the macro table. This visits every currently-defined macro. 4441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump typedef llvm::DenseMap<IdentifierInfo*, 44509b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner MacroInfo*>::const_iterator macro_iterator; 44688a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor macro_iterator macro_begin(bool IncludeExternalMacros = true) const; 44788a35862fbe473f2a4f0c19f24dbe536937e1dc6Douglas Gregor macro_iterator macro_end(bool IncludeExternalMacros = true) const; 448a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam 449e3d5e3ae5bd8028774f07d7c3751d4db82118942Chris Lattner const std::string &getPredefines() const { return Predefines; } 450aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// setPredefines - Set the predefines for this Preprocessor. These 451aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// predefines are automatically injected when parsing the main file. 452aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const char *P) { Predefines = P; } 453aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const std::string &P) { Predefines = P; } 4541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getIdentifierInfo - Return information about the specified preprocessor 4565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier token. The version of this method that takes two character 4575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pointers is preferred unless the identifier is already available as a 4585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// string (this avoids allocation and copying of memory to construct an 4595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// std::string). 460686775deca8b8685eb90801495880e3abdd844c2Chris Lattner IdentifierInfo *getIdentifierInfo(StringRef Name) const { 4613da736c1143126be19b253804b3b135ebcd3d6ffDaniel Dunbar return &Identifiers.get(Name); 4625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 4655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If 'Namespace' is non-null, then it is a token required to exist on the 4665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 467686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void AddPragmaHandler(StringRef Namespace, PragmaHandler *Handler); 4689b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis void AddPragmaHandler(PragmaHandler *Handler) { 469686775deca8b8685eb90801495880e3abdd844c2Chris Lattner AddPragmaHandler(StringRef(), Handler); 4709b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis } 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4724095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// RemovePragmaHandler - Remove the specific pragma handler from 4734095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// the preprocessor. If \arg Namespace is non-null, then it should 4744095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// be the namespace that \arg Handler was added to. It is an error 4754095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// to remove a handler that has not been registered. 476686775deca8b8685eb90801495880e3abdd844c2Chris Lattner void RemovePragmaHandler(StringRef Namespace, PragmaHandler *Handler); 4779b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis void RemovePragmaHandler(PragmaHandler *Handler) { 478686775deca8b8685eb90801495880e3abdd844c2Chris Lattner RemovePragmaHandler(StringRef(), Handler); 4799b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis } 4804095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 4812e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Add the specified comment handler to the preprocessor. 4822e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor void AddCommentHandler(CommentHandler *Handler); 4831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4842e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Remove the specified comment handler. 4852e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// 4862e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// It is an error to remove a handler that has not been registered. 4872e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor void RemoveCommentHandler(CommentHandler *Handler); 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 489f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief Set the code completion handler to the given object. 490f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor void setCodeCompletionHandler(CodeCompletionHandler &Handler) { 491f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeComplete = &Handler; 492f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor } 493ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 4941fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor /// \brief Retrieve the current code-completion handler. 4951fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor CodeCompletionHandler *getCodeCompletionHandler() const { 4961fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor return CodeComplete; 4971fbb447e9d43c2c676e94081fbfee7eb6cbe933bDouglas Gregor } 498ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 499f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor /// \brief Clear out the code completion handler. 500f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor void clearCodeCompletionHandler() { 501f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor CodeComplete = 0; 502f44e854ed1e3aa86d2ed6d615ccd109d50ddcff9Douglas Gregor } 503ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 50455817afdf9d453a443262a733f6caf6692dca118Douglas Gregor /// \brief Hook used by the lexer to invoke the "natural language" code 50555817afdf9d453a443262a733f6caf6692dca118Douglas Gregor /// completion point. 50655817afdf9d453a443262a733f6caf6692dca118Douglas Gregor void CodeCompleteNaturalLanguage(); 507ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 50894dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// \brief Retrieve the preprocessing record, or NULL if there is no 50994dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// preprocessing record. 510b9e1b75772db2c7db566c6034ba90a07f22e35ebDouglas Gregor PreprocessingRecord *getPreprocessingRecord() const { return Record; } 511ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 512ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie /// \brief Create a new preprocessing record, which will keep track of 51394dc8f640ebea52241412512ed48601626edbc58Douglas Gregor /// all macro expansions, macro definitions, etc. 5149e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth void createPreprocessingRecord(bool IncludeNestedMacroExpansions); 515ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 51653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// EnterMainSourceFile - Enter the specified FileID as the main source file, 5177dcc968f17a6ff9088c9651dddccc8d4025a1271Ted Kremenek /// which implicitly adds the builtin defines etc. 518e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner void EnterMainSourceFile(); 5191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 520dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar /// EndSourceFile - Inform the preprocessor callbacks that processing is 521dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar /// complete. 522dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar void EndSourceFile(); 523dbd8209b33e6c9f151e4913a9c095d64a95439c4Daniel Dunbar 5245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFile - Add a source file to the top of the include stack and 525e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner /// start lexing tokens from it instead of the current buffer. Emit an error 526e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner /// and don't enter the file on error. 527e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner void EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir, 528e127a0d80155b45dafe77f2b4380e5fa111a3345Chris Lattner SourceLocation Loc); 5295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterMacro - Add a Macro to the top of the include stack and start lexing 5315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens from it instead of the current buffer. Args specifies the 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens input to a function-like macro. 533e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// 534e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// ILEnd specifies the location of the ')' for a function-like macro or the 535e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// identifier for an object-like macro. 536e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner void EnterMacro(Token &Identifier, SourceLocation ILEnd, MacroArgs *Args); 5371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterTokenStream - Add a "macro" context to the top of the include stack, 5396b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// which will cause the lexer to start returning the specified tokens. 5406b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 5416b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If DisableMacroExpansion is true, tokens lexed from the token stream will 5426b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// not be subject to further macro expansion. Otherwise, these tokens will 5436b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// be re-macro-expanded when/if expansion is enabled. 5446b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 5456b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If OwnsTokens is false, this method assumes that the specified stream of 5466b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// tokens has a permanent owner somewhere, so they do not need to be copied. 5476b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If it is true, it assumes the array of tokens is allocated with new[] and 5486b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// must be freed. 5496b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 5506b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner void EnterTokenStream(const Token *Toks, unsigned NumToks, 5516b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner bool DisableMacroExpansion, bool OwnsTokens); 5521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RemoveTopOfLexerStack - Pop the current lexer/macro exp off the top of the 5545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer stack. This should only be used in situations where the current 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// state of the top-of-stack lexer is known. 5565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RemoveTopOfLexerStack(); 55703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 55803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// EnableBacktrackAtThisPos - From the point that this method is called, and 559ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// until CommitBacktrackedTokens() or Backtrack() is called, the Preprocessor 560ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// keeps track of the lexed tokens so that a subsequent Backtrack() call will 561ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// make the Preprocessor re-lex the same tokens. 56203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 563a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// Nested backtracks are allowed, meaning that EnableBacktrackAtThisPos can 564ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be called multiple times and CommitBacktrackedTokens/Backtrack calls will 565ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be combined with the EnableBacktrackAtThisPos calls in reverse order. 56603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 567ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// NOTE: *DO NOT* forget to call either CommitBacktrackedTokens or Backtrack 568ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// at some point after EnableBacktrackAtThisPos. If you don't, caching of 569ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// tokens will continue indefinitely. 57003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 571a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void EnableBacktrackAtThisPos(); 57203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 573ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// CommitBacktrackedTokens - Disable the last EnableBacktrackAtThisPos call. 574ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis void CommitBacktrackedTokens(); 57503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 57603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// Backtrack - Make Preprocessor re-lex the tokens that were lexed since 5771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// EnableBacktrackAtThisPos() was previously called. 578a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void Backtrack(); 57903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 58003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// isBacktrackEnabled - True if EnableBacktrackAtThisPos() was called and 58103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// caching of tokens is on. 582fad03b2b38a3baea4b67e79e676fee15078e3258Argyrios Kyrtzidis bool isBacktrackEnabled() const { return !BacktrackPositions.empty(); } 58303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 5845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Lex - To lex a token from the preprocessor, just pull a token from the 5855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// current lexer or macro object. 586d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Lex(Token &Result) { 587b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor switch (CurLexerKind) { 588b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_Lexer: CurLexer->Lex(Result); break; 589b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_PTHLexer: CurPTHLexer->Lex(Result); break; 590b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_TokenLexer: CurTokenLexer->Lex(Result); break; 591b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_CachingLexer: CachingLex(Result); break; 592b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor case CLK_LexAfterModuleImport: LexAfterModuleImport(Result); break; 593b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor } 5945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 596b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor void LexAfterModuleImport(Token &Result); 597ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 5985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexNonComment - Lex a token. If it's a comment, keep lexing until we get 5995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// something not a comment. This is useful in -E -C mode where comments 6005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// would foul up preprocessor directive handling. 601d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexNonComment(Token &Result) { 6025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer do 6035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 6045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (Result.getKind() == tok::comment); 6055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 606d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 6075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexUnexpandedToken - This is just like Lex, but this disables macro 6085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansion of identifier tokens. 609d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexUnexpandedToken(Token &Result) { 6105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Disable macro expansion. 6115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool OldVal = DisableMacroExpansion; 6125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = true; 6135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex the token. 6145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reenable it. 6175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = OldVal; 6185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 62088710f22be1acb04b7d812aebe87bea56394c07cEli Friedman /// LexUnexpandedNonComment - Like LexNonComment, but this disables macro 62188710f22be1acb04b7d812aebe87bea56394c07cEli Friedman /// expansion of identifier tokens. 62288710f22be1acb04b7d812aebe87bea56394c07cEli Friedman void LexUnexpandedNonComment(Token &Result) { 62388710f22be1acb04b7d812aebe87bea56394c07cEli Friedman do 62488710f22be1acb04b7d812aebe87bea56394c07cEli Friedman LexUnexpandedToken(Result); 62588710f22be1acb04b7d812aebe87bea56394c07cEli Friedman while (Result.getKind() == tok::comment); 62688710f22be1acb04b7d812aebe87bea56394c07cEli Friedman } 62788710f22be1acb04b7d812aebe87bea56394c07cEli Friedman 6286b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// LookAhead - This peeks ahead N tokens and returns that token without 6296b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// consuming any tokens. LookAhead(0) returns the next token that would be 6306b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returned by Lex(), LookAhead(1) returns the token after it, etc. This 6316b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returns normal tokens after phase 5. As such, it is equivalent to using 6326b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 'Lex', not 'LexUnexpandedToken'. 63303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &LookAhead(unsigned N) { 63403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (CachedLexPos + N < CachedTokens.size()) 63503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return CachedTokens[CachedLexPos+N]; 63603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 63703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return PeekAhead(N+1); 6389e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis } 6393604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 64008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// RevertCachedTokens - When backtracking is enabled and tokens are cached, 64108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// this allows to revert a specific number of tokens. 64208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// Note that the number of tokens being reverted should be up to the last 64308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// backtrack position, not more. 64408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis void RevertCachedTokens(unsigned N) { 64508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(isBacktrackEnabled() && 64608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Should only be called when tokens are cached for backtracking"); 64708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= signed(BacktrackPositions.back()) 64808b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis && "Should revert tokens up to the last backtrack position, not more"); 64908b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= 0 && 65008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Corrupted backtrack positions ?"); 65108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis CachedLexPos -= N; 65208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis } 65308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis 6543604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// EnterToken - Enters a token in the token stream to be lexed next. If 6553604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// BackTrack() is called afterwards, the token will remain at the insertion 6563604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// point. 6573604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void EnterToken(const Token &Tok) { 6583604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis EnterCachingLexMode(); 6593604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis CachedTokens.insert(CachedTokens.begin()+CachedLexPos, Tok); 6603604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 6613604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 6623604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// AnnotateCachedTokens - We notify the Preprocessor that if it is caching 6633604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// tokens (because backtrack is enabled) it should replace the most recent 6643604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens with the given annotation token. This function has no effect 6653604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// if backtracking is not enabled. 6663604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// 6673604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// Note that the use of this function is just for optimization; so that the 6683604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens doesn't get re-parsed and re-resolved after a backtrack is 6693604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// invoked. 6703604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotateCachedTokens(const Token &Tok) { 67147246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner assert(Tok.isAnnotation() && "Expected annotation token"); 67283cf05a3b0e655dc8ea1cb4c4e1eef541b770992Chris Lattner if (CachedLexPos != 0 && isBacktrackEnabled()) 6733604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis AnnotatePreviousCachedTokens(Tok); 6743604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 67539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 6761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Replace the last token with an annotation token. 67739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// 67839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// Like AnnotateCachedTokens(), this routine replaces an 67939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// already-parsed (and resolved) token with an annotation 68039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// token. However, this routine only replaces the last token with 68139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// the annotation token; it does not affect any other cached 68239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// tokens. This function has no effect if backtracking is not 68339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// enabled. 68439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor void ReplaceLastTokenWithAnnotation(const Token &Tok) { 68539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor assert(Tok.isAnnotation() && "Expected annotation token"); 68639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (CachedLexPos != 0 && isBacktrackEnabled()) 68739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor CachedTokens[CachedLexPos-1] = Tok; 68839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 68939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 690d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor /// \brief Recompute the current lexer kind based on the CurLexer/CurPTHLexer/ 691d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor /// CurTokenLexer pointers. 692d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor void recomputeCurLexerKind(); 693d6aba06861c41ccbc4926e5fe3cecd97b20410c0Douglas Gregor 6942968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \brief Specify the point at which code-completion will be performed. 6952968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 6962968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param File the file in which code completion should occur. If 6972968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// this file is included multiple times, code-completion will 6982968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// perform completion the first time it is included. If NULL, this 6992968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// function clears out the code-completion point. 7002968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7012968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param Line the line at which code completion should occur 7022968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// (1-based). 7032968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7042968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \param Column the column at which code completion should occur 7052968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// (1-based). 7062968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// 7072968442603b029949246467253eeac8139a5b6d8Douglas Gregor /// \returns true if an error occurred, false otherwise. 708a5d10c4df435964600e104ebef6a96b106e416b7Kovarththanan Rajaratnam bool SetCodeCompletionPoint(const FileEntry *File, 7092968442603b029949246467253eeac8139a5b6d8Douglas Gregor unsigned Line, unsigned Column); 7102968442603b029949246467253eeac8139a5b6d8Douglas Gregor 7113437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis /// \brief Determine if we are performing code completion. 7123437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis bool isCodeCompletionEnabled() const { return CodeCompletionFile != 0; } 7133437f1f1294499d4ef306c1089fcb3e29ec2aa68Argyrios Kyrtzidis 7147d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns the location of the code-completion point. 7157d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// Returns an invalid location if code-completion is not enabled or the file 7167d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// containing the code-completion point has not been lexed yet. 7177d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation getCodeCompletionLoc() const { return CodeCompletionLoc; } 7187d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7197d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns the start location of the file of code-completion point. 7207d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// Returns an invalid location if code-completion is not enabled or the file 7217d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// containing the code-completion point has not been lexed yet. 7227d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis SourceLocation getCodeCompletionFileLoc() const { 7237d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis return CodeCompletionFileLoc; 7247d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis } 7257d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7267d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Returns true if code-completion is enabled and we have hit the 7277d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// code-completion point. 7287d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis bool isCodeCompletionReached() const { return CodeCompletionReached; } 7297d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7307d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis /// \brief Note that we hit the code-completion point. 731fdd15602a42bbe26185978ef1e17019f6d969aa7Benjamin Kramer void setCodeCompletionReached(); 7327d100872341f233c81e1d7b72b40457e62c36862Argyrios Kyrtzidis 7338dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// \brief The location of the currently-active #pragma clang 7348dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// arc_cf_code_audited begin. Returns an invalid location if there 7358dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// is no such pragma active. 7368dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall SourceLocation getPragmaARCCFCodeAuditedLoc() const { 7378dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall return PragmaARCCFCodeAuditedLoc; 7388dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 7398dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 7408dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// \brief Set the location of the currently-active #pragma clang 7418dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall /// arc_cf_code_audited begin. An invalid location ends the pragma. 7428dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall void setPragmaARCCFCodeAuditedLoc(SourceLocation Loc) { 7438dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall PragmaARCCFCodeAuditedLoc = Loc; 7448dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall } 7458dfac0baaf0f81d3945bcb306480e358ba8d1f08John McCall 746f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// \brief Instruct the preprocessor to skip part of the main 747f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// the main source file. 748f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// 749f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// \brief Bytes The number of bytes in the preamble to skip. 750f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// 751f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// \brief StartOfLine Whether skipping these bytes puts the lexer at the 752f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor /// start of a line. 753ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie void setSkipMainFilePreamble(unsigned Bytes, bool StartOfLine) { 754f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor SkipMainFilePreamble.first = Bytes; 755f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor SkipMainFilePreamble.second = StartOfLine; 756f4f6c9db68465b886ec2e596feaa6ecc782395a4Douglas Gregor } 757ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Diag - Forwarding function for diagnostics. This emits a diagnostic at 759d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner /// the specified Token's location, translating the token's start 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// position in the current buffer into a SourcePosition object for rendering. 761fdd15602a42bbe26185978ef1e17019f6d969aa7Benjamin Kramer DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) const; 7621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 763fdd15602a42bbe26185978ef1e17019f6d969aa7Benjamin Kramer DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID) const; 7641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 765834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// getSpelling() - Return the 'spelling' of the token at the given 766834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// location; does not go up to the spelling location or down to the 7679e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// expansion location. 76830900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// 769834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// \param buffer A buffer which will be used only if the token requires 770834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall /// "cleaning", e.g. if it contains trigraphs or escaped newlines 77130900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// \param invalid If non-null, will be set \c true if an error occurs. 772686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getSpelling(SourceLocation loc, 773686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<char> &buffer, 774834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall bool *invalid = 0) const { 775834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall return Lexer::getSpelling(loc, buffer, SourceMgr, Features, invalid); 776834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall } 77730900dafbe972f4802c2663262b4393edab0d1cdJohn McCall 7785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling() - Return the 'spelling' of the Tok token. The spelling of a 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// token is the characters used to represent the token in the source file 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// after trigraph expansion and escaped-newline folding. In particular, this 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// wants to get the true, uncanonicalized, spelling of things like digraphs 7825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// UCNs, etc. 78350f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor /// 78430900dafbe972f4802c2663262b4393edab0d1cdJohn McCall /// \param Invalid If non-null, will be set \c true if an error occurs. 785b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner std::string getSpelling(const Token &Tok, bool *Invalid = 0) const { 786b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner return Lexer::getSpelling(Tok, SourceMgr, Features, Invalid); 787b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner } 7880ff1042ddaad1419264be0de6da17f3b378482a4Daniel Dunbar 7895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling - This method is used to get the spelling of a token into a 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// preallocated buffer, instead of as an std::string. The caller is required 7915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to allocate enough space for the token, which is guaranteed to be at least 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Tok.getLength() bytes long. The length of the actual result is returned. 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 7945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Note that this method may do two possible things: it may either fill in 7955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the buffer specified with characters, or it may *change the input pointer* 7965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to point to a constant buffer with the data already in it (avoiding a 7975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// copy). The caller is not allowed to modify the returned buffer pointer 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// if an internal buffer is returned. 799ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie unsigned getSpelling(const Token &Tok, const char *&Buffer, 80048cf9824fbad42995f4d91d59d08d2620effd683Chris Lattner bool *Invalid = 0) const { 801b0607279cb98bbf2bbfe0db170aed39ef91e86a2Chris Lattner return Lexer::getSpelling(Tok, Buffer, SourceMgr, Features, Invalid); 80248cf9824fbad42995f4d91d59d08d2620effd683Chris Lattner } 803b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 804ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// getSpelling - This method is used to get the spelling of a token into a 805ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// SmallVector. Note that the returned StringRef may not point to the 806ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer /// supplied buffer if a copy can be avoided. 807686775deca8b8685eb90801495880e3abdd844c2Chris Lattner StringRef getSpelling(const Token &Tok, 808ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie SmallVectorImpl<char> &Buffer, 80950f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor bool *Invalid = 0) const; 810ddeea5644367c9c153c9fee9e51bdea85ce43cbdBenjamin Kramer 8117216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// getSpellingOfSingleCharacterNumericConstant - Tok is a numeric constant 8127216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// with length 1, return the character. 813ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie char getSpellingOfSingleCharacterNumericConstant(const Token &Tok, 81450f6af7a6d6951a63f3da7d4c5a7d3965bf73b63Douglas Gregor bool *Invalid = 0) const { 8157216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(Tok.is(tok::numeric_constant) && 8167216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner Tok.getLength() == 1 && "Called on unsupported token"); 8177216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(!Tok.needsCleaning() && "Token can't need cleaning with length 1"); 8187216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner 8197216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // If the token is carrying a literal data pointer, just use it. 8207216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner if (const char *D = Tok.getLiteralData()) 8217216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *D; 82228396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek 8237216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // Otherwise, fall back on getCharacterData, which is slower, but always 8247216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // works. 825a543016fe07030f695d6d56fd22c8c8da617e0d7Douglas Gregor return *SourceMgr.getCharacterData(Tok.getLocation(), Invalid); 82628396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek } 8271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 828c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// \brief Retrieve the name of the immediate macro expansion. 829c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// 830c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// This routine starts from a source location, and finds the name of the macro 831c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// responsible for its immediate expansion. It looks through any intervening 832c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// macro argument expansions to compute this. It returns a StringRef which 833c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// refers to the SourceManager-owned buffer of the source where that macro 834c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks /// name is spelled. Thus, the result shouldn't out-live the SourceManager. 835c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks StringRef getImmediateMacroName(SourceLocation Loc) { 836c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks return Lexer::getImmediateMacroName(Loc, SourceMgr, getLangOptions()); 837c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks } 838c2a8d6cee01fc4845f5409bf5c021a64616ac8c3Anna Zaks 83947246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// CreateString - Plop the specified string into a scratch buffer and set the 84047246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// specified token's location and length to it. If specified, the source 8419e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// location provides a location of the expansion point of the token. 842a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara void CreateString(const char *Buf, unsigned Len, Token &Tok, 843a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara SourceLocation ExpansionLocStart = SourceLocation(), 844a08529cc3f00e0b47a3c028823634129ac46847bAbramo Bagnara SourceLocation ExpansionLocEnd = SourceLocation()); 845b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 846b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// \brief Computes the source location just past the end of the 847b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token at this source location. 848b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// 849b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// This routine can be used to produce a source location that 850b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// points just past the end of the token referenced by \p Loc, and 851b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// is generally used when a diagnostic needs to point just after a 852b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token where it expected something different that it received. If 853b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// the returned source location would not be meaningful (e.g., if 854b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// it points into a macro), this routine returns an invalid 855b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// source location. 85633e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// 85733e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// \param Offset an offset from the end of the token, where the source 85833e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// location should refer to. The default offset (0) produces a source 85933e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// location pointing just past the end of the token; an offset of 1 produces 86033e9abd21083a0191a7676a04b497006d2da184dDouglas Gregor /// a source location pointing to the last character in the token, etc. 8617ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset = 0) { 8627ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner return Lexer::getLocForEndOfToken(Loc, Offset, SourceMgr, Features); 8637ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner } 8641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8657a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis /// \brief Returns true if the given MacroID location points at the first 8669e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// token of the macro expansion. 86769bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// 86869bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// \param MacroBegin If non-null and function returns true, it is set to 86969bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// begin location of the macro. 87069bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis bool isAtStartOfMacroExpansion(SourceLocation loc, 87169bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis SourceLocation *MacroBegin = 0) const { 87269bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis return Lexer::isAtStartOfMacroExpansion(loc, SourceMgr, Features, 87369bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis MacroBegin); 8747a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis } 8757a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis 8767a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis /// \brief Returns true if the given MacroID location points at the last 8779e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth /// token of the macro expansion. 87869bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// 87969bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// \param MacroBegin If non-null and function returns true, it is set to 88069bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis /// end location of the macro. 88169bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis bool isAtEndOfMacroExpansion(SourceLocation loc, 88269bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis SourceLocation *MacroEnd = 0) const { 88369bda4c027671df7163619f215209529eb236620Argyrios Kyrtzidis return Lexer::isAtEndOfMacroExpansion(loc, SourceMgr, Features, MacroEnd); 8847a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis } 8857a759606d93975866051f67104ae58446e55f404Argyrios Kyrtzidis 8865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// DumpToken - Print the token to stderr, used for debugging. 8875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 888d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void DumpToken(const Token &Tok, bool DumpFlags = false) const; 889c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner void DumpLocation(SourceLocation Loc) const; 8905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void DumpMacro(const MacroInfo &MI) const; 8911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 89297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// AdvanceToTokenCharacter - Given a location that specifies the start of a 89397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// token, return a new location that specifies a character within the token. 894872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart, 895872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner unsigned Char) const { 8967ef5c27eb6e8ebe58b52013246c06753c3613263Chris Lattner return Lexer::AdvanceToTokenCharacter(TokStart, Char, SourceMgr, Features); 897872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner } 898872a45e91778eb0b706ff57272fe547d4512eb19Chris Lattner 8995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncrementPasteCounter - Increment the counters for the number of token 9005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// paste operations performed. If fast was specified, this is a 'fast paste' 9015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// case we handled. 9021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 9035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void IncrementPasteCounter(bool isFast) { 9045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isFast) 9055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFastTokenPaste; 9065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 9075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumTokenPaste; 9085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void PrintStats(); 9115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 912c5c5e92ec53f7e6ac7ebbbf77c6d8e4b7d88daecArgyrios Kyrtzidis size_t getTotalMemory() const; 913c5c5e92ec53f7e6ac7ebbbf77c6d8e4b7d88daecArgyrios Kyrtzidis 9143f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// HandleMicrosoftCommentPaste - When the macro expander pastes together a 9153f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// comment (/##/) in microsoft mode, this method handles updating the current 9163f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// state, returning the token on the next source line. 9173f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner void HandleMicrosoftCommentPaste(Token &Tok); 9181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 9205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Preprocessor callback methods. These are invoked by a lexer as various 9215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // directives and events are found. 9225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 923c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// LookUpIdentifierInfo - Given a tok::raw_identifier token, look up the 924c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// identifier information for the token and install it into the token, 925c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara /// updating the token kind accordingly. 926c4bf2b9afb7d47445a9dc6bc848657098a4e3851Abramo Bagnara IdentifierInfo *LookUpIdentifierInfo(Token &Identifier) const; 9271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleyprivate: 92928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley llvm::DenseMap<IdentifierInfo*,unsigned> PoisonReasons; 93028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 93128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleypublic: 93228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 93328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // SetPoisonReason - Call this function to indicate the reason for 93428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // poisoning an identifier. If that identifier is accessed while 93528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // poisoned, then this reason will be used instead of the default 93628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // "poisoned" diagnostic. 93728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void SetPoisonReason(IdentifierInfo *II, unsigned DiagID); 93828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 93928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // HandlePoisonedIdentifier - Display reason for poisoned 94028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley // identifier. 94128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void HandlePoisonedIdentifier(Token & Tok); 94228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 94328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void MaybeHandlePoisonedIdentifier(Token & Identifier) { 94428bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(IdentifierInfo * II = Identifier.getIdentifierInfo()) { 94528bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley if(II->isPoisoned()) { 94628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley HandlePoisonedIdentifier(Identifier); 94728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 94828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 94928bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley } 95028bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 95128bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleyprivate: 95228bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley /// Identifiers used for SEH handling in Borland. These are only 95328bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley /// allowed in particular circumstances 954ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __except block 955ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__exception_code, 956ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___exception_code, 957ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_GetExceptionCode; 958ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __except filter expression 959ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__exception_info, 960ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___exception_info, 961ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_GetExceptionInfo; 962ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie // __finally 963ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie IdentifierInfo *Ident__abnormal_termination, 964ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident___abnormal_termination, 965ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie *Ident_AbnormalTermination; 96628bbe4b8acc338476fe0825769b41fb32b423c72John Wiegleypublic: 96728bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley void PoisonSEHIdentifiers(bool Poison = true); // Borland 96828bbe4b8acc338476fe0825769b41fb32b423c72John Wiegley 9695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleIdentifier - This callback is invoked when the lexer reads an 9705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier and has filled in the tokens IdentifierInfo member. This 9715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// callback potentially macro expands it or turns it into a named token (like 9725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 'for'). 973d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentifier(Token &Identifier); 9745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleEndOfFile - This callback is invoked when the lexer hits the end of 9775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the current file. This either returns the EOF token and returns true, or 9785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pops a level off the include stack and returns false, at which point the 9795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// client should call lex again. 980d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleEndOfFile(Token &Result, bool isEndOfMacro = false); 9811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 982fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// HandleEndOfTokenLexer - This callback is invoked when the current 983fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// TokenLexer hits the end of its token stream. 984fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner bool HandleEndOfTokenLexer(Token &Result); 9851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleDirective - This callback is invoked when the lexer sees a # token 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// at the start of a line. This consumes the directive, modifies the 9885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer/preprocessor state, and advances the lexer(s) so that the next token 9895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// read is the correct one. 990d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleDirective(Token &Result); 9915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 99284021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// CheckEndOfDirective - Ensure that the next token is a tok::eod token. If 99384021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// not, emit a diagnostic and consume up until the eod. If EnableMacros is 994ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner /// true, then we consider macros that expand to zero tokens as being ok. 995ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner void CheckEndOfDirective(const char *Directive, bool EnableMacros = false); 9961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 997478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// DiscardUntilEndOfDirective - Read and discard all tokens remaining on the 99884021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// current line until the tok::eod token is found. 999478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void DiscardUntilEndOfDirective(); 10001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10017c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// SawDateOrTime - This returns true if the preprocessor has seen a use of 10027c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// __DATE__ or __TIME__ in the file so far. 10037c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner bool SawDateOrTime() const { 10047c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner return DATELoc != SourceLocation() || TIMELoc != SourceLocation(); 10057c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner } 1006c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned getCounterValue() const { return CounterValue; } 1007c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner void setCounterValue(unsigned V) { CounterValue = V; } 10081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 100990db26000aefe9335370013eec64c85232d80227Douglas Gregor /// \brief Retrieves the module that we're currently building, if any. 101090db26000aefe9335370013eec64c85232d80227Douglas Gregor Module *getCurrentModule(); 101190db26000aefe9335370013eec64c85232d80227Douglas Gregor 1012f908c519c1625e81d9e33d8a2a306a92834fe317Chris Lattner /// AllocateMacroInfo - Allocate a new MacroInfo object with the provide 1013f908c519c1625e81d9e33d8a2a306a92834fe317Chris Lattner /// SourceLocation. 1014f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *AllocateMacroInfo(SourceLocation L); 1015f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1016f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner /// CloneMacroInfo - Allocate a new MacroInfo object which is clone of MI. 1017f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *CloneMacroInfo(const MacroInfo &MI); 10181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1019a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// GetIncludeFilenameSpelling - Turn the specified lexer token into a fully 1020a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// checked and spelled filename, e.g. as an operand of #include. This returns 1021a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// true if the input filename was in <>'s or false if it were in ""'s. The 1022a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// caller is expected to provide a buffer that is large enough to hold the 1023a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// spelling of the filename, but is also expected to handle the case when 1024a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// this method decides to use a different buffer. 1025686775deca8b8685eb90801495880e3abdd844c2Chris Lattner bool GetIncludeFilenameSpelling(SourceLocation Loc,StringRef &Filename); 1026a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 1027a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// LookupFile - Given a "foo" or <foo> reference, look up the indicated file, 1028a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// return null on failure. isAngled indicates whether the file reference is 1029a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// for system #include's or not (i.e. using <> instead of ""). 1030686775deca8b8685eb90801495880e3abdd844c2Chris Lattner const FileEntry *LookupFile(StringRef Filename, 1031f45b646244705410866d62f1d8bf017a047ed662Chris Lattner bool isAngled, const DirectoryLookup *FromDir, 1032b5142bb7af5c70fffd09f05172a1379a35a9c29aChandler Carruth const DirectoryLookup *&CurDir, 1033686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVectorImpl<char> *SearchPath, 1034fba18aa8f2cd1994dc65e8cb9f4be201c560dc0bDouglas Gregor SmallVectorImpl<char> *RelativePath, 10351a4761edca58c6b559de825b9abfb66f7f1ba94aDouglas Gregor Module **SuggestedModule, 10361c2e9332fa69727425a3a2b912e36e2ab62083f8Douglas Gregor bool SkipCache = false); 1037a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 1038a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// GetCurLookup - The DirectoryLookup structure used to find the current 1039a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 1040a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// implement #include_next and find directory-specific properties. 1041a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const DirectoryLookup *GetCurDirLookup() { return CurDirLookup; } 1042a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 1043a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// isInPrimaryFile - Return true if we're in the top-level file, not in a 1044a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// #include. 1045a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool isInPrimaryFile() const; 1046a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 1047a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// ConcatenateIncludeName - Handle cases where the #include name is expanded 1048a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// from a macro as multiple tokens, which need to be glued together. This 1049a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// occurs for code like: 1050a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// #define FOO <a/b.h> 1051a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// #include FOO 1052a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// because in this case, "<a/b.h>" is returned as 7 tokens, not one. 1053a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// 1054321c2688198f6f1a4086964e505f239683423cecChris Lattner /// This code concatenates and consumes tokens up to the '>' token. It 1055321c2688198f6f1a4086964e505f239683423cecChris Lattner /// returns false if the > was found, otherwise it returns true if it finds 105684021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// and consumes the EOD marker. 1057ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor bool ConcatenateIncludeName(llvm::SmallString<128> &FilenameBuffer, 1058ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor SourceLocation &End); 1059a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 10609d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne /// LexOnOffSwitch - Lex an on-off-switch (C99 6.10.6p2) and verify that it is 106184021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// followed by EOD. Return true if the token is not a valid on-off-switch. 10629d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne bool LexOnOffSwitch(tok::OnOffSwitch &OOS); 10639d3f5f7550a2fab4178ed01425758c349b73a609Peter Collingbourne 10645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 10651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1066d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PushIncludeMacroStack() { 1067b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor IncludeMacroStack.push_back(IncludeStackInfo(CurLexerKind, 1068b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CurLexer.take(), 10699c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.take(), 10709c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer, 10719c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurTokenLexer.take(), 10729c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup)); 1073f89963b1e819d5e73796a4f9d7cd70129846e2ecTed Kremenek CurPPLexer = 0; 1074d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 10751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1076d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PopIncludeMacroStack() { 1077caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurLexer.reset(IncludeMacroStack.back().TheLexer); 10789c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.reset(IncludeMacroStack.back().ThePTHLexer); 10799c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer = IncludeMacroStack.back().ThePPLexer; 1080caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurTokenLexer.reset(IncludeMacroStack.back().TheTokenLexer); 10819c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup = IncludeMacroStack.back().TheDirLookup; 1082b8db7cd9ac05c522855631670ec2e97255384f5aDouglas Gregor CurLexerKind = IncludeMacroStack.back().CurLexerKind; 1083d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek IncludeMacroStack.pop_back(); 1084d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1086f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner /// AllocateMacroInfo - Allocate a new MacroInfo object. 1087f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner MacroInfo *AllocateMacroInfo(); 1088f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 10890ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// ReleaseMacroInfo - Release the specified MacroInfo. This memory will 10900ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// be reused for allocating new MacroInfo objects. 10910301b3ff132a4d986c092d161cb77d74b04cd2a6Chris Lattner void ReleaseMacroInfo(MacroInfo* MI); 10921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroName - Lex and validate a macro name, which occurs after a 109484021556baceb76eedf7d44be8ba71d9b8cfaccePeter Collingbourne /// #define or #undef. This emits a diagnostic, sets the token kind to eod, 10955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and discards the rest of the macro line if the macro name is invalid. 1096d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ReadMacroName(Token &MacroNameTok, char isDefineUndef = 0); 10971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroDefinitionArgList - The ( starting an argument list of a macro 10995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// definition has just been read. Lex the rest of the arguments and the 11005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// closing ), updating MI with what we learn. Return true if an error occurs 11015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// parsing the arg list. 11025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadMacroDefinitionArgList(MacroInfo *MI); 11031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SkipExcludedConditionalBlock - We just read a #if or related directive and 11055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// decided that the subsequent tokens are in the #if'd out portion of the 11065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// file. Lex the rest of the file, until we see an #endif. If 11075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundNonSkipPortion is true, then we have already emitted code for part of 11085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this #if directive, so #else/#elif blocks should never be entered. If 11095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundElse is false, then #else directives are ok, if not, then we have 11105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// already seen one so a #else directive is a duplicate. When this returns, 11115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the caller can lex the first valid token. 11125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SkipExcludedConditionalBlock(SourceLocation IfTokenLoc, 11136b4ff04dd22e7159887ea6c1bb8b1c01fc9c70a9Argyrios Kyrtzidis bool FoundNonSkipPortion, bool FoundElse, 11146b4ff04dd22e7159887ea6c1bb8b1c01fc9c70a9Argyrios Kyrtzidis SourceLocation ElseLoc = SourceLocation()); 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1116268ee7016a2811803989487c0ad3799486092c63Ted Kremenek /// PTHSkipExcludedConditionalBlock - A fast PTH version of 1117268ee7016a2811803989487c0ad3799486092c63Ted Kremenek /// SkipExcludedConditionalBlock. 1118268ee7016a2811803989487c0ad3799486092c63Ted Kremenek void PTHSkipExcludedConditionalBlock(); 11191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateDirectiveExpression - Evaluate an integer constant expression that 11215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// may occur after a #if or #elif directive and return it as a bool. If the 11225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression is equivalent to "!defined(X)" return X in IfNDefMacro. 11235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool EvaluateDirectiveExpression(IdentifierInfo *&IfNDefMacro); 11241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 11265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #pragma GCC poison/system_header/dependency and #pragma once. 11275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinPragmas(); 11281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinMacros - Register builtin macros, such as __LINE__ with the 11305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier table. 11315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinMacros(); 11321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleMacroExpandedIdentifier - If an identifier token is read that is to 11345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// be expanded as a macro, handle it and return the next token as 'Tok'. If 11355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the macro should not be expanded return true, otherwise return false. 1136d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleMacroExpandedIdentifier(Token &Tok, MacroInfo *MI); 11371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11385b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// \brief Cache macro expanded tokens for TokenLexers. 11395b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis // 11405b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// Works like a stack; a TokenLexer adds the macro expanded tokens that is 11415b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// going to lex in the cache and when it finishes the tokens are removed 11425b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis /// from the end of the cache. 11435b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis Token *cacheMacroExpandedTokens(TokenLexer *tokLexer, 11442d3ba4f5a923a90c3fc290ddfba5e36c2d0a9b46Chris Lattner ArrayRef<Token> tokens); 11455b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis void removeCachedMacroExpandedTokensOfLastLexer(); 11465b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis friend void TokenLexer::ExpandFunctionArguments(); 11475b3284a9275a27f5c4410e25eb8933be540601d6Argyrios Kyrtzidis 11485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isNextPPTokenLParen - Determine whether the next preprocessor token to be 11495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexed is a '('. If so, consume the token and return true, if not, this 11505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// method should have no observable side-effect on the lexed tokens. 11515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isNextPPTokenLParen(); 11521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadFunctionLikeMacroArgs - After reading "MACRO(", this method is 11545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invoked to read all of the formal arguments specified for the macro 11555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invocation. This returns null on error. 1156e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner MacroArgs *ReadFunctionLikeMacroArgs(Token &MacroName, MacroInfo *MI, 11579e5bb85ac899eeab7c21b5ff9030c3da6ff4837bChandler Carruth SourceLocation &ExpansionEnd); 11585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 11595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExpandBuiltinMacro - If an identifier token is read that is to be expanded 11605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// as a builtin macro, handle it and return the next token as 'Tok'. 1161d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ExpandBuiltinMacro(Token &Tok); 11621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 11645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// return the first token after the directive. The _Pragma token has just 11655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// been read into 'Tok'. 1166d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Handle_Pragma(Token &Tok); 11671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11681ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall /// HandleMicrosoft__pragma - Like Handle_Pragma except the pragma text 11691ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall /// is not enclosed within a string literal. 11701ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall void HandleMicrosoft__pragma(Token &Tok); 11711ef8a2e7675f3d8b6e8d9963b00378086e1dcdc7John McCall 11725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFileWithLexer - Add a lexer to the top of the include stack and 11735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. 11745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EnterSourceFileWithLexer(Lexer *TheLexer, const DirectoryLookup *Dir); 11756137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 11766137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// EnterSourceFileWithPTH - Add a lexer to the top of the include stack and 11776137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// start getting tokens from it using the PTH cache. 11786137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek void EnterSourceFileWithPTH(PTHLexer *PL, const DirectoryLookup *Dir); 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 118034eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// IsFileLexer - Returns true if we are lexing from a file and not a 118134eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// pragma or a macro. 118234eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek static bool IsFileLexer(const Lexer* L, const PreprocessorLexer* P) { 118334eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek return L ? !L->isPragmaLexer() : P != 0; 118441938c8493b4380df738263166b746eacb33c309Ted Kremenek } 118541938c8493b4380df738263166b746eacb33c309Ted Kremenek 118681d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek static bool IsFileLexer(const IncludeStackInfo& I) { 118781d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(I.TheLexer, I.ThePPLexer); 118841938c8493b4380df738263166b746eacb33c309Ted Kremenek } 118941938c8493b4380df738263166b746eacb33c309Ted Kremenek 119081d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek bool IsFileLexer() const { 119181d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(CurLexer.get(), CurPPLexer); 119241938c8493b4380df738263166b746eacb33c309Ted Kremenek } 11931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 119503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis // Caching stuff. 119603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void CachingLex(Token &Result); 119703569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis bool InCachingLexMode() const { 119803569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis // If the Lexer pointers are 0 and IncludeMacroStack is empty, it means 119903569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis // that we are past EOF, not that we are in CachingLex mode. 1200ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie return CurPPLexer == 0 && CurTokenLexer == 0 && CurPTHLexer == 0 && 120156eb1ec6e54080e47bbc62412737c25afb5211edTed Kremenek !IncludeMacroStack.empty(); 120203569eaabceb14a20e23d043135fdccbc7309a96Argyrios Kyrtzidis } 120303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void EnterCachingLexMode(); 120403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void ExitCachingLexMode() { 120503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (InCachingLexMode()) 120603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis RemoveTopOfLexerStack(); 120703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis } 120803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &PeekAhead(unsigned N); 12093604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotatePreviousCachedTokens(const Token &Tok); 121003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 121103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 12125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle*Directive - implement the various preprocessor directives. These 12135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// should side-effect the current preprocessor object so that the next call 12145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to Lex() will return the appropriate token next. 1215359cc4475487ea0a660b3e8918334a2866e71c66Chris Lattner void HandleLineDirective(Token &Tok); 1216478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void HandleDigitDirective(Token &Tok); 1217d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUserDiagnosticDirective(Token &Tok, bool isWarning); 1218d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentSCCSDirective(Token &Tok); 121994ad28b31433058445a27db722f60402ee820beaDouglas Gregor void HandleMacroPublicDirective(Token &Tok); 1220aa93a875605536d72a10359a0098396192b7d4ecDouglas Gregor void HandleMacroPrivateDirective(Token &Tok); 1221ba243b59a1074e0962f6abfa3bb9aa984eac1245David Blaikie 12225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // File inclusion. 1223ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeDirective(SourceLocation HashLoc, 1224ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor Token &Tok, 12255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *LookupFrom = 0, 12265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isImport = false); 1227ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeNextDirective(SourceLocation HashLoc, Token &Tok); 1228ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleIncludeMacrosDirective(SourceLocation HashLoc, Token &Tok); 1229ecdcb883cbc6bb4a2445dc6f02d58d9bdb54a0edDouglas Gregor void HandleImportDirective(SourceLocation HashLoc, Token &Tok); 12301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro handling. 123242e6737f2efb113563140ad794c21c7709250402Chris Lattner void HandleDefineDirective(Token &Tok); 1233d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUndefDirective(Token &Tok); 12341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Conditional Inclusion. 1236d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfdefDirective(Token &Tok, bool isIfndef, 12375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadAnyTokensBeforeDirective); 1238d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfDirective(Token &Tok, bool ReadAnyTokensBeforeDirective); 1239d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleEndifDirective(Token &Tok); 1240d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElseDirective(Token &Tok); 1241d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElifDirective(Token &Tok); 12421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Pragmas. 124480c60f72848896f867f6b7e664e7060d9e78f019Douglas Gregor void HandlePragmaDirective(unsigned Introducer); 12455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 1246d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaOnce(Token &OnceTok); 12472243449253475574fc6f14986ff8f7fce5d46799Chris Lattner void HandlePragmaMark(); 1248d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaPoison(Token &PoisonTok); 1249d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaSystemHeader(Token &SysHeaderTok); 1250d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaDependency(Token &DependencyTok); 1251636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner void HandlePragmaComment(Token &CommentTok); 1252abfe094ce71c42656dcb84a3bdc3e79cb3c16fc3Chris Lattner void HandlePragmaMessage(Token &MessageTok); 1253f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner void HandlePragmaPushMacro(Token &Tok); 1254f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner void HandlePragmaPopMacro(Token &Tok); 1255f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner IdentifierInfo *ParsePragmaPushOrPopMacro(Token &Tok); 1256f47724bf78299c7a50f008e0443c5f9f9f279ddcChris Lattner 1257046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // Return true and store the first token only if any CommentHandler 1258046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // has inserted some tokens and getCommentRetentionState() is false. 1259046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner bool HandleComment(Token &Token, SourceRange Comment); 12600827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis 12610827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// \brief A macro is used, update information about macros that need unused 12620827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis /// warnings. 12630827408865e32789e0ec4b8113a302ccdc531423Argyrios Kyrtzidis void markMacroAsUsed(MacroInfo *MI); 12645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 12655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \brief Abstract base class that describes a handler that will receive 12672e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor/// source ranges for each of the comments encountered in the source file. 12682e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler { 12692e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorpublic: 12702e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor virtual ~CommentHandler(); 12711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1272046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // The handler shall return true if it has pushed any tokens 1273046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner // to be read using e.g. EnterToken or EnterTokenStream. 1274046c2277dcbcc8eb89dbb5b1b8c5226b7cb81635Chris Lattner virtual bool HandleComment(Preprocessor &PP, SourceRange Comment) = 0; 12752e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor}; 12761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 12785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 12795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 1280