Preprocessor.h revision c3222091e1ffa35d0264ca6b680a88c9dc84ede2
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 175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Lexer.h" 189c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek#include "clang/Lex/PTHLexer.h" 19eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner#include "clang/Lex/PPCallbacks.h" 205d75de0f821023f4ed4815825bf3aea8a0b5e40dChris Lattner#include "clang/Lex/TokenLexer.h" 216137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek#include "clang/Lex/PTHManager.h" 221b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner#include "clang/Basic/Builtins.h" 23adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner#include "clang/Basic/Diagnostic.h" 24c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#include "clang/Basic/IdentifierTable.h" 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceLocation.h" 26cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner#include "llvm/ADT/DenseMap.h" 27caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek#include "llvm/ADT/OwningPtr.h" 28f4d5eb4866a27d497f0bb75b12c2ffd48ad4d9c0Benjamin Kramer#include "llvm/ADT/SmallVector.h" 290ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek#include "llvm/Support/Allocator.h" 302e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor#include <vector> 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass SourceManager; 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileManager; 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileEntry; 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass HeaderSearch; 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaNamespace; 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaHandler; 402e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler; 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ScratchBuffer; 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass TargetInfo; 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PPCallbacks; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass DirectoryLookup; 451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 46e5956bd2730c051835f9acd9e957c5d79f99e7c3Chris Lattner/// Preprocessor - This object engages in a tight little dance with the lexer to 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// efficiently preprocess tokens. Lexers know only about tokens within a 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// single source file, and don't know anything about preprocessor-level issues 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// like the #include stack, token expansion, etc. 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass Preprocessor { 52836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner Diagnostic *Diags; 53ba1e898c64048e25cb65afec3807ad463e41914bArgyrios Kyrtzidis LangOptions Features; 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &Target; 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &FileMgr; 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &SourceMgr; 575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuffer *ScratchBuf; 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &HeaderInfo; 591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 606137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// PTH - An optional PTHManager object used for getting tokens from 616137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// a token cache rather than lexing the original source file. 626137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek llvm::OwningPtr<PTHManager> PTH; 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 640ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// BP - A BumpPtrAllocator object used to quickly allocate and release 650ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// objects internal to the Preprocessor. 660ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek llvm::BumpPtrAllocator BP; 671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers for builtin macros and other builtins. 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__LINE__, *Ident__FILE__; // __LINE__, __FILE__ 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__DATE__, *Ident__TIME__; // __DATE__, __TIME__ 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__INCLUDE_LEVEL__; // __INCLUDE_LEVEL__ 725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__BASE_FILE__; // __BASE_FILE__ 735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__TIMESTAMP__; // __TIMESTAMP__ 74c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner IdentifierInfo *Ident__COUNTER__; // __COUNTER__ 755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident_Pragma, *Ident__VA_ARGS__; // _Pragma, __VA_ARGS__ 76148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_feature; // __has_feature 77148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfo *Ident__has_builtin; // __has_builtin 7892bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include; // __has_include 7992bd8c70a6837b647a6c55964f8d0a50bf561dbcJohn Thompson IdentifierInfo *Ident__has_include_next; // __has_include_next 801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DATELoc, TIMELoc; 82c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned CounterValue; // Next __COUNTER__ value. 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum { 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// MaxIncludeStackDepth - Maximum depth of #includes. 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxAllowedIncludeStackDepth = 200 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that is set before the preprocessor begins. 905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepComments : 1; 915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepMacroComments : 1; 921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that changes while the preprocessor runs: 945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool DisableMacroExpansion : 1; // True if macro expansion is disabled. 955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool InMacroArgs : 1; // True if parsing fn macro invocation args. 965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers - This is mapping/lookup information for all identifiers in 985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the program, including program keywords. 99c3222091e1ffa35d0264ca6b680a88c9dc84ede2Daniel Dunbar mutable IdentifierTable Identifiers; 1001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// Selectors - This table contains all the selectors in the program. Unlike 10268d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// IdentifierTable above, this table *isn't* populated by the preprocessor. 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// It is declared/instantiated here because it's role/lifetime is 10468d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// conceptually similar the IdentifierTable. In addition, the current control 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// flow (in clang::ParseAST()), make it convenient to put here. 10668d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// FIXME: Make sure the lifetime of Identifiers/Selectors *isn't* tied to 10768d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// the lifetime fo the preprocessor. 10829238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable Selectors; 1092e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 1101b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner /// BuiltinInfo - Information about builtins. 1111b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context BuiltinInfo; 1121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// PragmaHandlers - This tracks all of the pragmas that the client registered 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// with this preprocessor. 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *PragmaHandlers; 1161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Tracks all of the comment handlers that the client registered 1182e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// with this preprocessor. 1192e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor std::vector<CommentHandler *> CommentHandlers; 1201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLexer - This is the current top of the stack that we're lexing from if 1229c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding a macro and we are lexing directly from source code. 1239c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 124caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek llvm::OwningPtr<Lexer> CurLexer; 1251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1269c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer - This is the current top of stack that we're lexing from if 1279c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding from a macro and we are lexing from a PTH cache. 1289c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 1299c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek llvm::OwningPtr<PTHLexer> CurPTHLexer; 1301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1319c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPPLexer - This is the current top of the stack what we're lexing from 1329c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// if not expanding a macro. This is an alias for either CurLexer or 1339c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer. 1349c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer* CurPPLexer; 1351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLookup - The DirectoryLookup structure used to find the current 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// implement #include_next and find directory-specific properties. 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDirLookup; 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1416cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurTokenLexer - This is the current macro we are expanding, if we are 1426cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// expanding a macro. One of CurLexer and CurTokenLexer must be null. 143caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek llvm::OwningPtr<TokenLexer> CurTokenLexer; 1441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncludeMacroStack - This keeps track of the stack of files currently 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #included, and macros currently being expanded from, not counting 1476cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurLexer/CurTokenLexer. 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct IncludeStackInfo { 1499c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek Lexer *TheLexer; 1509c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PTHLexer *ThePTHLexer; 1519c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer *ThePPLexer; 1521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TokenLexer *TheTokenLexer; 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *TheDirLookup; 1549c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 1559c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek IncludeStackInfo(Lexer *L, PTHLexer* P, PreprocessorLexer* PPL, 1569c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TokenLexer* TL, const DirectoryLookup *D) 1579c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek : TheLexer(L), ThePTHLexer(P), ThePPLexer(PPL), TheTokenLexer(TL), 1589c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TheDirLookup(D) {} 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::vector<IncludeStackInfo> IncludeMacroStack; 1611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Callbacks - These are actions invoked when some preprocessor activity is 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// encountered (e.g. a file is #included, etc). 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *Callbacks; 1651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 166cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// Macros - For each IdentifierInfo with 'HasMacro' set, we keep a mapping 167cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// to the actual definition of the macro. 168cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner llvm::DenseMap<IdentifierInfo*, MacroInfo*> Macros; 1691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1700ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// MICache - A "freelist" of MacroInfo objects that can be reused for quick 1710ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// allocation. 1720ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek std::vector<MacroInfo*> MICache; 1731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Various statistics we track for performance analysis. 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumDirectives, NumIncluded, NumDefined, NumUndefined, NumPragma; 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumIf, NumElse, NumEndif; 1775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumEnteredSourceFiles, MaxIncludeStackDepth; 1785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumMacroExpanded, NumFnMacroExpanded, NumBuiltinMacroExpanded; 1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumFastMacroExpanded, NumTokenPaste, NumFastTokenPaste; 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumSkipped; 1811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// Predefines - This string is the predefined macros that preprocessor 183aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// should use from the command line etc. 184aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner std::string Predefines; 1851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1866cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// TokenLexerCache - Cache macro expanders to reduce malloc traffic. 1876cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner enum { TokenLexerCacheSize = 8 }; 1886cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner unsigned NumCachedTokenLexers; 1896cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner TokenLexer *TokenLexerCache[TokenLexerCacheSize]; 1909e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis 191e671e1bc73615eda155059a772266ed2882d758cChris Lattnerprivate: // Cached tokens state. 192f4d5eb4866a27d497f0bb75b12c2ffd48ad4d9c0Benjamin Kramer typedef llvm::SmallVector<Token, 1> CachedTokensTy; 19303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 19403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedTokens - Cached tokens are stored here when we do backtracking or 19503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// lookahead. They are "lexed" by the CachingLex() method. 19603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy CachedTokens; 19703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 19803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedLexPos - The position of the cached token that CachingLex() should 19903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// "lex" next. If it points beyond the CachedTokens vector, it means that 20003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// a normal Lex() should be invoked. 20103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy::size_type CachedLexPos; 20203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 203a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// BacktrackPositions - Stack of backtrack positions, allowing nested 204a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// backtracks. The EnableBacktrackAtThisPos() method pushes a position to 205a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// indicate where CachedLexPos should be set when the BackTrack() method is 206a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// invoked (at which point the last position is popped). 207a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis std::vector<CachedTokensTy::size_type> BacktrackPositions; 20803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Preprocessor(Diagnostic &diags, const LangOptions &opts, TargetInfo &target, 21172b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek SourceManager &SM, HeaderSearch &Headers, 212148772a841cae6f32db16d890e788b92a763bb3fChris Lattner IdentifierInfoLookup *IILookup = 0); 21372b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ~Preprocessor(); 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 216836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner Diagnostic &getDiagnostics() const { return *Diags; } 2177c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner void setDiagnostics(Diagnostic &D) { Diags = &D; } 2187c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const LangOptions &getLangOptions() const { return Features; } 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &getTargetInfo() const { return Target; } 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &getFileManager() const { return FileMgr; } 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &getSourceManager() const { return SourceMgr; } 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &getHeaderSearchInfo() const { return HeaderInfo; } 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierTable &getIdentifierTable() { return Identifiers; } 22629238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable &getSelectorTable() { return Selectors; } 2271b63e4f732dbc73d90abf886b4d21f8e3a165f6dChris Lattner Builtin::Context &getBuiltinInfo() { return BuiltinInfo; } 22832fca722dd974b8202d0fb9c71b6c185c0767da6Chris Lattner llvm::BumpPtrAllocator &getPreprocessorAllocator() { return BP; } 2291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 230337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek void setPTHManager(PTHManager* pm); 2311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 232880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek PTHManager *getPTHManager() { return PTH.get(); } 2332e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SetCommentRetentionState - Control whether or not the preprocessor retains 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// comments in output. 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SetCommentRetentionState(bool KeepComments, bool KeepMacroComments) { 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepComments = KeepComments | KeepMacroComments; 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepMacroComments = KeepMacroComments; 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool getCommentRetentionState() const { return KeepComments; } 2421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isCurrentLexer - Return true if we are lexing directly from the specified 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer. 2457062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek bool isCurrentLexer(const PreprocessorLexer *L) const { 2467062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek return CurPPLexer == L; 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 249a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// getCurrentLexer - Return the current lexer being lexed from. Note 250a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// that this ignores any potentially active macro expansions and _Pragma 251a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// expansions going on at the time. 252a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson PreprocessorLexer *getCurrentLexer() const { return CurPPLexer; } 253a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 254a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// getCurrentFileLexer - Return the current file lexer being lexed from. Note 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// that this ignores any potentially active macro expansions and _Pragma 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansions going on at the time. 25768e48e4a81767997ef0231e47eca4f665102c95eTed Kremenek PreprocessorLexer *getCurrentFileLexer() const; 2581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 259eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// getPPCallbacks/setPPCallbacks - Accessors for preprocessor callbacks. 260eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// Note that this class takes ownership of any PPCallbacks object given to 261eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// it. 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *getPPCallbacks() const { return Callbacks; } 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setPPCallbacks(PPCallbacks *C) { 264e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar if (Callbacks) 265e5393fb93eb879d9ebbef102ae9311fa77e023ccDaniel Dunbar C = new PPChainedCallbacks(C, Callbacks); 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Callbacks = C; 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 269cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// getMacroInfo - Given an identifier, return the MacroInfo it is #defined to 270cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// or null if it isn't #define'd. 271cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner MacroInfo *getMacroInfo(IdentifierInfo *II) const { 272cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner return II->hasMacroDefinition() ? Macros.find(II)->second : 0; 273cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 2741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 275cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// setMacroInfo - Specify a macro for this identifier. 276cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// 277cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner void setMacroInfo(IdentifierInfo *II, MacroInfo *MI); 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27909b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner /// macro_iterator/macro_begin/macro_end - This allows you to walk the current 28009b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner /// state of the macro table. This visits every currently-defined macro. 2811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump typedef llvm::DenseMap<IdentifierInfo*, 28209b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner MacroInfo*>::const_iterator macro_iterator; 28309b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner macro_iterator macro_begin() const { return Macros.begin(); } 28409b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner macro_iterator macro_end() const { return Macros.end(); } 2851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 288e3d5e3ae5bd8028774f07d7c3751d4db82118942Chris Lattner const std::string &getPredefines() const { return Predefines; } 289aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// setPredefines - Set the predefines for this Preprocessor. These 290aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// predefines are automatically injected when parsing the main file. 291aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const char *P) { Predefines = P; } 292aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const std::string &P) { Predefines = P; } 2931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getIdentifierInfo - Return information about the specified preprocessor 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier token. The version of this method that takes two character 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pointers is preferred unless the identifier is already available as a 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// string (this avoids allocation and copying of memory to construct an 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// std::string). 299c3222091e1ffa35d0264ca6b680a88c9dc84ede2Daniel Dunbar IdentifierInfo *getIdentifierInfo(llvm::StringRef Name) const { 3003da736c1143126be19b253804b3b135ebcd3d6ffDaniel Dunbar return &Identifiers.get(Name); 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If 'Namespace' is non-null, then it is a token required to exist on the 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void AddPragmaHandler(const char *Namespace, PragmaHandler *Handler); 3075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3084095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// RemovePragmaHandler - Remove the specific pragma handler from 3094095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// the preprocessor. If \arg Namespace is non-null, then it should 3104095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// be the namespace that \arg Handler was added to. It is an error 3114095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// to remove a handler that has not been registered. 3124095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar void RemovePragmaHandler(const char *Namespace, PragmaHandler *Handler); 3134095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 3142e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Add the specified comment handler to the preprocessor. 3152e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor void AddCommentHandler(CommentHandler *Handler); 3161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3172e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// \brief Remove the specified comment handler. 3182e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// 3192e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor /// It is an error to remove a handler that has not been registered. 3202e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor void RemoveCommentHandler(CommentHandler *Handler); 3211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 32253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// EnterMainSourceFile - Enter the specified FileID as the main source file, 3237dcc968f17a6ff9088c9651dddccc8d4025a1271Ted Kremenek /// which implicitly adds the builtin defines etc. 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump void EnterMainSourceFile(); 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFile - Add a source file to the top of the include stack and 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. If isMainFile 3285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is true, this is the main file for the translation unit. 3292b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner void EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir); 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterMacro - Add a Macro to the top of the include stack and start lexing 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens from it instead of the current buffer. Args specifies the 3335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens input to a function-like macro. 334e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// 335e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// ILEnd specifies the location of the ')' for a function-like macro or the 336e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// identifier for an object-like macro. 337e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner void EnterMacro(Token &Identifier, SourceLocation ILEnd, MacroArgs *Args); 3381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterTokenStream - Add a "macro" context to the top of the include stack, 3406b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// which will cause the lexer to start returning the specified tokens. 3416b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 3426b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If DisableMacroExpansion is true, tokens lexed from the token stream will 3436b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// not be subject to further macro expansion. Otherwise, these tokens will 3446b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// be re-macro-expanded when/if expansion is enabled. 3456b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 3466b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If OwnsTokens is false, this method assumes that the specified stream of 3476b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// tokens has a permanent owner somewhere, so they do not need to be copied. 3486b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If it is true, it assumes the array of tokens is allocated with new[] and 3496b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// must be freed. 3506b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 3516b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner void EnterTokenStream(const Token *Toks, unsigned NumToks, 3526b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner bool DisableMacroExpansion, bool OwnsTokens); 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RemoveTopOfLexerStack - Pop the current lexer/macro exp off the top of the 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer stack. This should only be used in situations where the current 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// state of the top-of-stack lexer is known. 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RemoveTopOfLexerStack(); 35803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 35903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// EnableBacktrackAtThisPos - From the point that this method is called, and 360ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// until CommitBacktrackedTokens() or Backtrack() is called, the Preprocessor 361ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// keeps track of the lexed tokens so that a subsequent Backtrack() call will 362ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// make the Preprocessor re-lex the same tokens. 36303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 364a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// Nested backtracks are allowed, meaning that EnableBacktrackAtThisPos can 365ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be called multiple times and CommitBacktrackedTokens/Backtrack calls will 366ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be combined with the EnableBacktrackAtThisPos calls in reverse order. 36703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 368ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// NOTE: *DO NOT* forget to call either CommitBacktrackedTokens or Backtrack 369ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// at some point after EnableBacktrackAtThisPos. If you don't, caching of 370ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// tokens will continue indefinitely. 37103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 372a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void EnableBacktrackAtThisPos(); 37303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 374ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// CommitBacktrackedTokens - Disable the last EnableBacktrackAtThisPos call. 375ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis void CommitBacktrackedTokens(); 37603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 37703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// Backtrack - Make Preprocessor re-lex the tokens that were lexed since 3781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// EnableBacktrackAtThisPos() was previously called. 379a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void Backtrack(); 38003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 38103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// isBacktrackEnabled - True if EnableBacktrackAtThisPos() was called and 38203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// caching of tokens is on. 383fad03b2b38a3baea4b67e79e676fee15078e3258Argyrios Kyrtzidis bool isBacktrackEnabled() const { return !BacktrackPositions.empty(); } 38403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Lex - To lex a token from the preprocessor, just pull a token from the 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// current lexer or macro object. 387d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Lex(Token &Result) { 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurLexer) 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurLexer->Lex(Result); 390f6452c5421c5db5a7ceff581525f286931d97f1aTed Kremenek else if (CurPTHLexer) 391f6452c5421c5db5a7ceff581525f286931d97f1aTed Kremenek CurPTHLexer->Lex(Result); 3929e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis else if (CurTokenLexer) 3936cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner CurTokenLexer->Lex(Result); 39403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 39503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachingLex(Result); 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexNonComment - Lex a token. If it's a comment, keep lexing until we get 3995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// something not a comment. This is useful in -E -C mode where comments 4005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// would foul up preprocessor directive handling. 401d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexNonComment(Token &Result) { 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer do 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 4045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (Result.getKind() == tok::comment); 4055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 406d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 4075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexUnexpandedToken - This is just like Lex, but this disables macro 4085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansion of identifier tokens. 409d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexUnexpandedToken(Token &Result) { 4105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Disable macro expansion. 4115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool OldVal = DisableMacroExpansion; 4125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = true; 4135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex the token. 4145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 4151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reenable it. 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = OldVal; 4185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4206b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// LookAhead - This peeks ahead N tokens and returns that token without 4216b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// consuming any tokens. LookAhead(0) returns the next token that would be 4226b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returned by Lex(), LookAhead(1) returns the token after it, etc. This 4236b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returns normal tokens after phase 5. As such, it is equivalent to using 4246b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 'Lex', not 'LexUnexpandedToken'. 42503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &LookAhead(unsigned N) { 42603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (CachedLexPos + N < CachedTokens.size()) 42703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return CachedTokens[CachedLexPos+N]; 42803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 42903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return PeekAhead(N+1); 4309e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis } 4313604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 43208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// RevertCachedTokens - When backtracking is enabled and tokens are cached, 43308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// this allows to revert a specific number of tokens. 43408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// Note that the number of tokens being reverted should be up to the last 43508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// backtrack position, not more. 43608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis void RevertCachedTokens(unsigned N) { 43708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(isBacktrackEnabled() && 43808b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Should only be called when tokens are cached for backtracking"); 43908b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= signed(BacktrackPositions.back()) 44008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis && "Should revert tokens up to the last backtrack position, not more"); 44108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= 0 && 44208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Corrupted backtrack positions ?"); 44308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis CachedLexPos -= N; 44408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis } 44508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis 4463604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// EnterToken - Enters a token in the token stream to be lexed next. If 4473604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// BackTrack() is called afterwards, the token will remain at the insertion 4483604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// point. 4493604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void EnterToken(const Token &Tok) { 4503604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis EnterCachingLexMode(); 4513604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis CachedTokens.insert(CachedTokens.begin()+CachedLexPos, Tok); 4523604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 4533604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 4543604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// AnnotateCachedTokens - We notify the Preprocessor that if it is caching 4553604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// tokens (because backtrack is enabled) it should replace the most recent 4563604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens with the given annotation token. This function has no effect 4573604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// if backtracking is not enabled. 4583604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// 4593604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// Note that the use of this function is just for optimization; so that the 4603604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens doesn't get re-parsed and re-resolved after a backtrack is 4613604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// invoked. 4623604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotateCachedTokens(const Token &Tok) { 46347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner assert(Tok.isAnnotation() && "Expected annotation token"); 46483cf05a3b0e655dc8ea1cb4c4e1eef541b770992Chris Lattner if (CachedLexPos != 0 && isBacktrackEnabled()) 4653604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis AnnotatePreviousCachedTokens(Tok); 4663604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 46739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// \brief Replace the last token with an annotation token. 46939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// 47039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// Like AnnotateCachedTokens(), this routine replaces an 47139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// already-parsed (and resolved) token with an annotation 47239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// token. However, this routine only replaces the last token with 47339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// the annotation token; it does not affect any other cached 47439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// tokens. This function has no effect if backtracking is not 47539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// enabled. 47639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor void ReplaceLastTokenWithAnnotation(const Token &Tok) { 47739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor assert(Tok.isAnnotation() && "Expected annotation token"); 47839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (CachedLexPos != 0 && isBacktrackEnabled()) 47939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor CachedTokens[CachedLexPos-1] = Tok; 48039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 48139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 4825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Diag - Forwarding function for diagnostics. This emits a diagnostic at 483d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner /// the specified Token's location, translating the token's start 4845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// position in the current buffer into a SourcePosition object for rendering. 485adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) { 486836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner return Diags->Report(FullSourceLoc(Loc, getSourceManager()), DiagID); 487adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner } 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 489adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID) { 490836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner return Diags->Report(FullSourceLoc(Tok.getLocation(), getSourceManager()), 491836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner DiagID); 492adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner } 4931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling() - Return the 'spelling' of the Tok token. The spelling of a 4955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// token is the characters used to represent the token in the source file 4965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// after trigraph expansion and escaped-newline folding. In particular, this 4975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// wants to get the true, uncanonicalized, spelling of things like digraphs 4985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// UCNs, etc. 499d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner std::string getSpelling(const Token &Tok) const; 5001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling - This method is used to get the spelling of a token into a 5025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// preallocated buffer, instead of as an std::string. The caller is required 5035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to allocate enough space for the token, which is guaranteed to be at least 5045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Tok.getLength() bytes long. The length of the actual result is returned. 5055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 5065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Note that this method may do two possible things: it may either fill in 5075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the buffer specified with characters, or it may *change the input pointer* 5085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to point to a constant buffer with the data already in it (avoiding a 5095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// copy). The caller is not allowed to modify the returned buffer pointer 5105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// if an internal buffer is returned. 511d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner unsigned getSpelling(const Token &Tok, const char *&Buffer) const; 512b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 5137216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// getSpellingOfSingleCharacterNumericConstant - Tok is a numeric constant 5147216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// with length 1, return the character. 5157216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner char getSpellingOfSingleCharacterNumericConstant(const Token &Tok) const { 5167216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(Tok.is(tok::numeric_constant) && 5177216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner Tok.getLength() == 1 && "Called on unsupported token"); 5187216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(!Tok.needsCleaning() && "Token can't need cleaning with length 1"); 5197216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner 5207216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // If the token is carrying a literal data pointer, just use it. 5217216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner if (const char *D = Tok.getLiteralData()) 5227216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *D; 52328396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek 5247216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // Otherwise, fall back on getCharacterData, which is slower, but always 5257216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // works. 5267216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *SourceMgr.getCharacterData(Tok.getLocation()); 52728396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek } 5281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 52947246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// CreateString - Plop the specified string into a scratch buffer and set the 53047246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// specified token's location and length to it. If specified, the source 53147246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// location provides a location of the instantiation point of the token. 53247246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner void CreateString(const char *Buf, unsigned Len, 53347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Token &Tok, SourceLocation SourceLoc = SourceLocation()); 534b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 535b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// \brief Computes the source location just past the end of the 536b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token at this source location. 537b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// 538b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// This routine can be used to produce a source location that 539b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// points just past the end of the token referenced by \p Loc, and 540b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// is generally used when a diagnostic needs to point just after a 541b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token where it expected something different that it received. If 542b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// the returned source location would not be meaningful (e.g., if 543b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// it points into a macro), this routine returns an invalid 544b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// source location. 545b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation getLocForEndOfToken(SourceLocation Loc); 5461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// DumpToken - Print the token to stderr, used for debugging. 5485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 549d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void DumpToken(const Token &Tok, bool DumpFlags = false) const; 550c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner void DumpLocation(SourceLocation Loc) const; 5515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void DumpMacro(const MacroInfo &MI) const; 5521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 55397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// AdvanceToTokenCharacter - Given a location that specifies the start of a 55497ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// token, return a new location that specifies a character within the token. 55597ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart,unsigned Char); 5561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncrementPasteCounter - Increment the counters for the number of token 5585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// paste operations performed. If fast was specified, this is a 'fast paste' 5595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// case we handled. 5601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// 5615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void IncrementPasteCounter(bool isFast) { 5625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isFast) 5635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFastTokenPaste; 5645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 5655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumTokenPaste; 5665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void PrintStats(); 5695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5703f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// HandleMicrosoftCommentPaste - When the macro expander pastes together a 5713f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// comment (/##/) in microsoft mode, this method handles updating the current 5723f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// state, returning the token on the next source line. 5733f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner void HandleMicrosoftCommentPaste(Token &Tok); 5741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 5765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Preprocessor callback methods. These are invoked by a lexer as various 5775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // directives and events are found. 5785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LookUpIdentifierInfo - Given a tok::identifier token, look up the 5805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier information for the token and install it into the token. 581d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner IdentifierInfo *LookUpIdentifierInfo(Token &Identifier, 582c3222091e1ffa35d0264ca6b680a88c9dc84ede2Daniel Dunbar const char *BufPtr = 0) const; 5831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleIdentifier - This callback is invoked when the lexer reads an 5855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier and has filled in the tokens IdentifierInfo member. This 5865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// callback potentially macro expands it or turns it into a named token (like 5875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 'for'). 588d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentifier(Token &Identifier); 5895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleEndOfFile - This callback is invoked when the lexer hits the end of 5925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the current file. This either returns the EOF token and returns true, or 5935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pops a level off the include stack and returns false, at which point the 5945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// client should call lex again. 595d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleEndOfFile(Token &Result, bool isEndOfMacro = false); 5961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 597fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// HandleEndOfTokenLexer - This callback is invoked when the current 598fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// TokenLexer hits the end of its token stream. 599fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner bool HandleEndOfTokenLexer(Token &Result); 6001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleDirective - This callback is invoked when the lexer sees a # token 6021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// at the start of a line. This consumes the directive, modifies the 6035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer/preprocessor state, and advances the lexer(s) so that the next token 6045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// read is the correct one. 605d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleDirective(Token &Result); 6065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CheckEndOfDirective - Ensure that the next token is a tok::eom token. If 608ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner /// not, emit a diagnostic and consume up until the eom. If EnableMacros is 609ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner /// true, then we consider macros that expand to zero tokens as being ok. 610ab82f41b217ce588a9456c0b4411f219d3ed0df8Chris Lattner void CheckEndOfDirective(const char *Directive, bool EnableMacros = false); 6111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 612478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// DiscardUntilEndOfDirective - Read and discard all tokens remaining on the 613478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// current line until the tok::eom token is found. 614478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void DiscardUntilEndOfDirective(); 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6167c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// SawDateOrTime - This returns true if the preprocessor has seen a use of 6177c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner /// __DATE__ or __TIME__ in the file so far. 6187c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner bool SawDateOrTime() const { 6197c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner return DATELoc != SourceLocation() || TIMELoc != SourceLocation(); 6207c5d24efcd2e505b5739f7def08dfe25ce59a1b2Chris Lattner } 621c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner unsigned getCounterValue() const { return CounterValue; } 622c1f9d828c733ec1eba06d01070735d1f36fda733Chris Lattner void setCounterValue(unsigned V) { CounterValue = V; } 6231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 624f908c519c1625e81d9e33d8a2a306a92834fe317Chris Lattner /// AllocateMacroInfo - Allocate a new MacroInfo object with the provide 625f908c519c1625e81d9e33d8a2a306a92834fe317Chris Lattner /// SourceLocation. 626f908c519c1625e81d9e33d8a2a306a92834fe317Chris Lattner MacroInfo* AllocateMacroInfo(SourceLocation L); 6271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 628a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// GetIncludeFilenameSpelling - Turn the specified lexer token into a fully 629a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// checked and spelled filename, e.g. as an operand of #include. This returns 630a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// true if the input filename was in <>'s or false if it were in ""'s. The 631a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// caller is expected to provide a buffer that is large enough to hold the 632a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// spelling of the filename, but is also expected to handle the case when 633a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// this method decides to use a different buffer. 634a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool GetIncludeFilenameSpelling(SourceLocation Loc, 635a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const char *&BufStart, const char *&BufEnd); 636a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 637a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// LookupFile - Given a "foo" or <foo> reference, look up the indicated file, 638a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// return null on failure. isAngled indicates whether the file reference is 639a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// for system #include's or not (i.e. using <> instead of ""). 640a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const FileEntry *LookupFile(const char *FilenameStart,const char *FilenameEnd, 641a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool isAngled, const DirectoryLookup *FromDir, 642a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const DirectoryLookup *&CurDir); 643a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 644a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// GetCurLookup - The DirectoryLookup structure used to find the current 645a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 646a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// implement #include_next and find directory-specific properties. 647a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson const DirectoryLookup *GetCurDirLookup() { return CurDirLookup; } 648a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 649a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// isInPrimaryFile - Return true if we're in the top-level file, not in a 650a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// #include. 651a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool isInPrimaryFile() const; 652a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 653a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// ConcatenateIncludeName - Handle cases where the #include name is expanded 654a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// from a macro as multiple tokens, which need to be glued together. This 655a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// occurs for code like: 656a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// #define FOO <a/b.h> 657a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// #include FOO 658a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// because in this case, "<a/b.h>" is returned as 7 tokens, not one. 659a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// 660a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// This code concatenates and consumes tokens up to the '>' token. It returns 661a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// false if the > was found, otherwise it returns true if it finds and consumes 662a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson /// the EOM marker. 663a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson bool ConcatenateIncludeName(llvm::SmallVector<char, 128> &FilenameBuffer); 664a28cc090f265d5bdaef9ebb24fb9d579928d3a18John Thompson 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 6661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 667d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PushIncludeMacroStack() { 6689c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek IncludeMacroStack.push_back(IncludeStackInfo(CurLexer.take(), 6699c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.take(), 6709c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer, 6719c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurTokenLexer.take(), 6729c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup)); 673f89963b1e819d5e73796a4f9d7cd70129846e2ecTed Kremenek CurPPLexer = 0; 674d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 6751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 676d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PopIncludeMacroStack() { 677caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurLexer.reset(IncludeMacroStack.back().TheLexer); 6789c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.reset(IncludeMacroStack.back().ThePTHLexer); 6799c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer = IncludeMacroStack.back().ThePPLexer; 680caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurTokenLexer.reset(IncludeMacroStack.back().TheTokenLexer); 6819c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup = IncludeMacroStack.back().TheDirLookup; 682d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek IncludeMacroStack.pop_back(); 683d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 6841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6850ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// ReleaseMacroInfo - Release the specified MacroInfo. This memory will 6860ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// be reused for allocating new MacroInfo objects. 6870301b3ff132a4d986c092d161cb77d74b04cd2a6Chris Lattner void ReleaseMacroInfo(MacroInfo* MI); 6881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroName - Lex and validate a macro name, which occurs after a 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #define or #undef. This emits a diagnostic, sets the token kind to eom, 6915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and discards the rest of the macro line if the macro name is invalid. 692d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ReadMacroName(Token &MacroNameTok, char isDefineUndef = 0); 6931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroDefinitionArgList - The ( starting an argument list of a macro 6955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// definition has just been read. Lex the rest of the arguments and the 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// closing ), updating MI with what we learn. Return true if an error occurs 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// parsing the arg list. 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadMacroDefinitionArgList(MacroInfo *MI); 6991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SkipExcludedConditionalBlock - We just read a #if or related directive and 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// decided that the subsequent tokens are in the #if'd out portion of the 7025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// file. Lex the rest of the file, until we see an #endif. If 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundNonSkipPortion is true, then we have already emitted code for part of 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this #if directive, so #else/#elif blocks should never be entered. If 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundElse is false, then #else directives are ok, if not, then we have 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// already seen one so a #else directive is a duplicate. When this returns, 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the caller can lex the first valid token. 7085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SkipExcludedConditionalBlock(SourceLocation IfTokenLoc, 7095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool FoundNonSkipPortion, bool FoundElse); 7101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 711268ee7016a2811803989487c0ad3799486092c63Ted Kremenek /// PTHSkipExcludedConditionalBlock - A fast PTH version of 712268ee7016a2811803989487c0ad3799486092c63Ted Kremenek /// SkipExcludedConditionalBlock. 713268ee7016a2811803989487c0ad3799486092c63Ted Kremenek void PTHSkipExcludedConditionalBlock(); 7141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateDirectiveExpression - Evaluate an integer constant expression that 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// may occur after a #if or #elif directive and return it as a bool. If the 7175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression is equivalent to "!defined(X)" return X in IfNDefMacro. 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool EvaluateDirectiveExpression(IdentifierInfo *&IfNDefMacro); 7191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #pragma GCC poison/system_header/dependency and #pragma once. 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinPragmas(); 7231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinMacros - Register builtin macros, such as __LINE__ with the 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier table. 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinMacros(); 7271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleMacroExpandedIdentifier - If an identifier token is read that is to 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// be expanded as a macro, handle it and return the next token as 'Tok'. If 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the macro should not be expanded return true, otherwise return false. 731d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleMacroExpandedIdentifier(Token &Tok, MacroInfo *MI); 7321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isNextPPTokenLParen - Determine whether the next preprocessor token to be 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexed is a '('. If so, consume the token and return true, if not, this 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// method should have no observable side-effect on the lexed tokens. 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isNextPPTokenLParen(); 7371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadFunctionLikeMacroArgs - After reading "MACRO(", this method is 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invoked to read all of the formal arguments specified for the macro 7405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invocation. This returns null on error. 741e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner MacroArgs *ReadFunctionLikeMacroArgs(Token &MacroName, MacroInfo *MI, 742e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner SourceLocation &InstantiationEnd); 7435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExpandBuiltinMacro - If an identifier token is read that is to be expanded 7455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// as a builtin macro, handle it and return the next token as 'Tok'. 746d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ExpandBuiltinMacro(Token &Tok); 7471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 7495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// return the first token after the directive. The _Pragma token has just 7505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// been read into 'Tok'. 751d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Handle_Pragma(Token &Tok); 7521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFileWithLexer - Add a lexer to the top of the include stack and 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. 7555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EnterSourceFileWithLexer(Lexer *TheLexer, const DirectoryLookup *Dir); 7566137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 7576137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// EnterSourceFileWithPTH - Add a lexer to the top of the include stack and 7586137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// start getting tokens from it using the PTH cache. 7596137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek void EnterSourceFileWithPTH(PTHLexer *PL, const DirectoryLookup *Dir); 7601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 76134eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// IsFileLexer - Returns true if we are lexing from a file and not a 76234eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// pragma or a macro. 76334eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek static bool IsFileLexer(const Lexer* L, const PreprocessorLexer* P) { 76434eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek return L ? !L->isPragmaLexer() : P != 0; 76541938c8493b4380df738263166b746eacb33c309Ted Kremenek } 76641938c8493b4380df738263166b746eacb33c309Ted Kremenek 76781d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek static bool IsFileLexer(const IncludeStackInfo& I) { 76881d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(I.TheLexer, I.ThePPLexer); 76941938c8493b4380df738263166b746eacb33c309Ted Kremenek } 77041938c8493b4380df738263166b746eacb33c309Ted Kremenek 77181d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek bool IsFileLexer() const { 77281d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(CurLexer.get(), CurPPLexer); 77341938c8493b4380df738263166b746eacb33c309Ted Kremenek } 7741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 77603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis // Caching stuff. 77703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void CachingLex(Token &Result); 7783296ccea50e7b6649638bd666181e0825145e898Ted Kremenek bool InCachingLexMode() const { return CurPPLexer == 0 && CurTokenLexer == 0;} 77903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void EnterCachingLexMode(); 78003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void ExitCachingLexMode() { 78103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (InCachingLexMode()) 78203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis RemoveTopOfLexerStack(); 78303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis } 78403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &PeekAhead(unsigned N); 7853604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotatePreviousCachedTokens(const Token &Tok); 78603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 78703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle*Directive - implement the various preprocessor directives. These 7895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// should side-effect the current preprocessor object so that the next call 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to Lex() will return the appropriate token next. 791359cc4475487ea0a660b3e8918334a2866e71c66Chris Lattner void HandleLineDirective(Token &Tok); 792478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void HandleDigitDirective(Token &Tok); 793d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUserDiagnosticDirective(Token &Tok, bool isWarning); 794d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentSCCSDirective(Token &Tok); 7951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // File inclusion. 797d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIncludeDirective(Token &Tok, 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *LookupFrom = 0, 7995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isImport = false); 800d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIncludeNextDirective(Token &Tok); 801de076650fa79a02743b5fe57a72f991ba24779f9Chris Lattner void HandleIncludeMacrosDirective(Token &Tok); 802d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleImportDirective(Token &Tok); 8031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro handling. 80542e6737f2efb113563140ad794c21c7709250402Chris Lattner void HandleDefineDirective(Token &Tok); 806d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUndefDirective(Token &Tok); 807d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner // HandleAssertDirective(Token &Tok); 808d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner // HandleUnassertDirective(Token &Tok); 8091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Conditional Inclusion. 811d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfdefDirective(Token &Tok, bool isIfndef, 8125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadAnyTokensBeforeDirective); 813d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfDirective(Token &Tok, bool ReadAnyTokensBeforeDirective); 814d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleEndifDirective(Token &Tok); 815d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElseDirective(Token &Tok); 816d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElifDirective(Token &Tok); 8171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Pragmas. 8195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void HandlePragmaDirective(); 8205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 821d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaOnce(Token &OnceTok); 8222243449253475574fc6f14986ff8f7fce5d46799Chris Lattner void HandlePragmaMark(); 823d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaPoison(Token &PoisonTok); 824d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaSystemHeader(Token &SysHeaderTok); 825d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaDependency(Token &DependencyTok); 826636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner void HandlePragmaComment(Token &CommentTok); 8272e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor void HandleComment(SourceRange Comment); 8285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 8295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \brief Abstract base class that describes a handler that will receive 8312e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor/// source ranges for each of the comments encountered in the source file. 8322e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorclass CommentHandler { 8332e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregorpublic: 8342e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor virtual ~CommentHandler(); 8351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8362e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor virtual void HandleComment(Preprocessor &PP, SourceRange Comment) = 0; 8372e22253e03e175144aeb9d13350a12fd83f858beDouglas Gregor}; 8381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 8405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 842