Preprocessor.h revision 880dcf21dfdb3ff763c60195b6794bab0d913095
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" 22adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner#include "clang/Basic/Diagnostic.h" 23c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner#include "clang/Basic/IdentifierTable.h" 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceLocation.h" 25cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner#include "llvm/ADT/DenseMap.h" 26caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek#include "llvm/ADT/OwningPtr.h" 270ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek#include "llvm/Support/Allocator.h" 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang { 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass SourceManager; 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileManager; 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass FileEntry; 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass HeaderSearch; 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaNamespace; 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PragmaHandler; 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ScratchBuffer; 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass TargetInfo; 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass PPCallbacks; 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass DirectoryLookup; 416137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 42e5956bd2730c051835f9acd9e957c5d79f99e7c3Chris Lattner/// Preprocessor - This object engages in a tight little dance with the lexer to 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// efficiently preprocess tokens. Lexers know only about tokens within a 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// single source file, and don't know anything about preprocessor-level issues 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// like the #include stack, token expansion, etc. 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass Preprocessor { 48836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner Diagnostic *Diags; 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const LangOptions &Features; 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &Target; 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &FileMgr; 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &SourceMgr; 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuffer *ScratchBuf; 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &HeaderInfo; 556137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 566137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// PTH - An optional PTHManager object used for getting tokens from 576137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// a token cache rather than lexing the original source file. 586137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek llvm::OwningPtr<PTHManager> PTH; 590ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek 600ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// BP - A BumpPtrAllocator object used to quickly allocate and release 610ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// objects internal to the Preprocessor. 620ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek llvm::BumpPtrAllocator BP; 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers for builtin macros and other builtins. 655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__LINE__, *Ident__FILE__; // __LINE__, __FILE__ 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__DATE__, *Ident__TIME__; // __DATE__, __TIME__ 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__INCLUDE_LEVEL__; // __INCLUDE_LEVEL__ 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__BASE_FILE__; // __BASE_FILE__ 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident__TIMESTAMP__; // __TIMESTAMP__ 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *Ident_Pragma, *Ident__VA_ARGS__; // _Pragma, __VA_ARGS__ 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DATELoc, TIMELoc; 735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer enum { 755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// MaxIncludeStackDepth - Maximum depth of #includes. 765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxAllowedIncludeStackDepth = 200 775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that is set before the preprocessor begins. 805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepComments : 1; 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool KeepMacroComments : 1; 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // State that changes while the preprocessor runs: 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool DisableMacroExpansion : 1; // True if macro expansion is disabled. 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool InMacroArgs : 1; // True if parsing fn macro invocation args. 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Identifiers - This is mapping/lookup information for all identifiers in 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the program, including program keywords. 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierTable Identifiers; 905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 9168d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// Selectors - This table contains all the selectors in the program. Unlike 9268d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// IdentifierTable above, this table *isn't* populated by the preprocessor. 9368d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// It is declared/instantiated here because it's role/lifetime is 9468d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// conceptually similar the IdentifierTable. In addition, the current control 9568d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// flow (in clang::ParseAST()), make it convenient to put here. 9668d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// FIXME: Make sure the lifetime of Identifiers/Selectors *isn't* tied to 9768d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff /// the lifetime fo the preprocessor. 9829238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable Selectors; 992e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// PragmaHandlers - This tracks all of the pragmas that the client registered 1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// with this preprocessor. 1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaNamespace *PragmaHandlers; 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLexer - This is the current top of the stack that we're lexing from if 1059c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding a macro and we are lexing directly from source code. 1069c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 107caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek llvm::OwningPtr<Lexer> CurLexer; 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1099c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer - This is the current top of stack that we're lexing from if 1109c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// not expanding from a macro and we are lexing from a PTH cache. 1119c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// Only one of CurLexer, CurPTHLexer, or CurTokenLexer will be non-null. 1129c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek llvm::OwningPtr<PTHLexer> CurPTHLexer; 1139c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 1149c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPPLexer - This is the current top of the stack what we're lexing from 1159c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// if not expanding a macro. This is an alias for either CurLexer or 1169c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek /// CurPTHLexer. 1179c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer* CurPPLexer; 1189c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CurLookup - The DirectoryLookup structure used to find the current 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FileEntry, if CurLexer is non-null and if applicable. This allows us to 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// implement #include_next and find directory-specific properties. 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *CurDirLookup; 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1246cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurTokenLexer - This is the current macro we are expanding, if we are 1256cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// expanding a macro. One of CurLexer and CurTokenLexer must be null. 126caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek llvm::OwningPtr<TokenLexer> CurTokenLexer; 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncludeMacroStack - This keeps track of the stack of files currently 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #included, and macros currently being expanded from, not counting 1306cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// CurLexer/CurTokenLexer. 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct IncludeStackInfo { 1329c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek Lexer *TheLexer; 1339c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PTHLexer *ThePTHLexer; 1349c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek PreprocessorLexer *ThePPLexer; 1359c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TokenLexer *TheTokenLexer; 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *TheDirLookup; 1379c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek 1389c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek IncludeStackInfo(Lexer *L, PTHLexer* P, PreprocessorLexer* PPL, 1399c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TokenLexer* TL, const DirectoryLookup *D) 1409c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek : TheLexer(L), ThePTHLexer(P), ThePPLexer(PPL), TheTokenLexer(TL), 1419c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek TheDirLookup(D) {} 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer }; 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::vector<IncludeStackInfo> IncludeMacroStack; 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Callbacks - These are actions invoked when some preprocessor activity is 1465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// encountered (e.g. a file is #included, etc). 1475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *Callbacks; 1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 149cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// Macros - For each IdentifierInfo with 'HasMacro' set, we keep a mapping 150cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// to the actual definition of the macro. 151cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner llvm::DenseMap<IdentifierInfo*, MacroInfo*> Macros; 152cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner 1530ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// MICache - A "freelist" of MacroInfo objects that can be reused for quick 1540ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// allocation. 1550ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek std::vector<MacroInfo*> MICache; 1560ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Various statistics we track for performance analysis. 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumDirectives, NumIncluded, NumDefined, NumUndefined, NumPragma; 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumIf, NumElse, NumEndif; 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumEnteredSourceFiles, MaxIncludeStackDepth; 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumMacroExpanded, NumFnMacroExpanded, NumBuiltinMacroExpanded; 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumFastMacroExpanded, NumTokenPaste, NumFastTokenPaste; 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned NumSkipped; 1649594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner 165aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// Predefines - This string is the predefined macros that preprocessor 166aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// should use from the command line etc. 167aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner std::string Predefines; 16853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 1696cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner /// TokenLexerCache - Cache macro expanders to reduce malloc traffic. 1706cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner enum { TokenLexerCacheSize = 8 }; 1716cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner unsigned NumCachedTokenLexers; 1726cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner TokenLexer *TokenLexerCache[TokenLexerCacheSize]; 1739e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis 174e671e1bc73615eda155059a772266ed2882d758cChris Lattnerprivate: // Cached tokens state. 17503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis typedef std::vector<Token> CachedTokensTy; 17603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 17703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedTokens - Cached tokens are stored here when we do backtracking or 17803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// lookahead. They are "lexed" by the CachingLex() method. 17903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy CachedTokens; 18003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 18103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// CachedLexPos - The position of the cached token that CachingLex() should 18203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// "lex" next. If it points beyond the CachedTokens vector, it means that 18303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// a normal Lex() should be invoked. 18403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedTokensTy::size_type CachedLexPos; 18503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 186a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// BacktrackPositions - Stack of backtrack positions, allowing nested 187a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// backtracks. The EnableBacktrackAtThisPos() method pushes a position to 188a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// indicate where CachedLexPos should be set when the BackTrack() method is 189a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// invoked (at which point the last position is popped). 190a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis std::vector<CachedTokensTy::size_type> BacktrackPositions; 19103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 1925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Preprocessor(Diagnostic &diags, const LangOptions &opts, TargetInfo &target, 19472b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek SourceManager &SM, HeaderSearch &Headers, 19517d527b051fbc3927b8a1b4ce4607a9b2ed445eeChris Lattner IdentifierInfoLookup* IILookup = 0); 19672b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ~Preprocessor(); 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 199836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner Diagnostic &getDiagnostics() const { return *Diags; } 2007c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner void setDiagnostics(Diagnostic &D) { Diags = &D; } 2017c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner 2027c175fb196a2bc3dbc86ea3865c713e1875f3f6dChris Lattner 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const LangOptions &getLangOptions() const { return Features; } 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &getTargetInfo() const { return Target; } 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer FileManager &getFileManager() const { return FileMgr; } 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceManager &getSourceManager() const { return SourceMgr; } 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &getHeaderSearchInfo() const { return HeaderInfo; } 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierTable &getIdentifierTable() { return Identifiers; } 21029238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff SelectorTable &getSelectorTable() { return Selectors; } 21132fca722dd974b8202d0fb9c71b6c185c0767da6Chris Lattner llvm::BumpPtrAllocator &getPreprocessorAllocator() { return BP; } 212880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek 213337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek void setPTHManager(PTHManager* pm); 214880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek 215880dcf21dfdb3ff763c60195b6794bab0d913095Ted Kremenek PTHManager *getPTHManager() { return PTH.get(); } 2162e1cd4264d363ca869bf37ef160902f211d21b8cDouglas Gregor 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SetCommentRetentionState - Control whether or not the preprocessor retains 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// comments in output. 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SetCommentRetentionState(bool KeepComments, bool KeepMacroComments) { 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepComments = KeepComments | KeepMacroComments; 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer this->KeepMacroComments = KeepMacroComments; 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool getCommentRetentionState() const { return KeepComments; } 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isCurrentLexer - Return true if we are lexing directly from the specified 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer. 2287062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek bool isCurrentLexer(const PreprocessorLexer *L) const { 2297062d9e9fc3ed89c4e4ea7055efea6585b7bac8dTed Kremenek return CurPPLexer == L; 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getCurrentLexer - Return the current file lexer being lexed from. Note 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// that this ignores any potentially active macro expansions and _Pragma 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansions going on at the time. 23568e48e4a81767997ef0231e47eca4f665102c95eTed Kremenek PreprocessorLexer *getCurrentFileLexer() const; 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 237eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// getPPCallbacks/setPPCallbacks - Accessors for preprocessor callbacks. 238eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// Note that this class takes ownership of any PPCallbacks object given to 239eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner /// it. 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PPCallbacks *getPPCallbacks() const { return Callbacks; } 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void setPPCallbacks(PPCallbacks *C) { 242eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner delete Callbacks; 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Callbacks = C; 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 246cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// getMacroInfo - Given an identifier, return the MacroInfo it is #defined to 247cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// or null if it isn't #define'd. 248cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner MacroInfo *getMacroInfo(IdentifierInfo *II) const { 249cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner return II->hasMacroDefinition() ? Macros.find(II)->second : 0; 250cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 251cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner 252cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// setMacroInfo - Specify a macro for this identifier. 253cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner /// 254cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner void setMacroInfo(IdentifierInfo *II, MacroInfo *MI); 255cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner 25609b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner /// macro_iterator/macro_begin/macro_end - This allows you to walk the current 25709b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner /// state of the macro table. This visits every currently-defined macro. 25809b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner typedef llvm::DenseMap<IdentifierInfo*, 25909b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner MacroInfo*>::const_iterator macro_iterator; 26009b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner macro_iterator macro_begin() const { return Macros.begin(); } 26109b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner macro_iterator macro_end() const { return Macros.end(); } 26209b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner 26309b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner 26409b5c1d08a33ecf5d9c61b922fbe679867336684Chris Lattner 265e3d5e3ae5bd8028774f07d7c3751d4db82118942Chris Lattner const std::string &getPredefines() const { return Predefines; } 266aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// setPredefines - Set the predefines for this Preprocessor. These 267aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner /// predefines are automatically injected when parsing the main file. 268aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const char *P) { Predefines = P; } 269aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner void setPredefines(const std::string &P) { Predefines = P; } 27053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getIdentifierInfo - Return information about the specified preprocessor 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier token. The version of this method that takes two character 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pointers is preferred unless the identifier is already available as a 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// string (this avoids allocation and copying of memory to construct an 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// std::string). 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *getIdentifierInfo(const char *NameStart, 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *NameEnd) { 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &Identifiers.get(NameStart, NameEnd); 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *getIdentifierInfo(const char *NameStr) { 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return getIdentifierInfo(NameStr, NameStr+strlen(NameStr)); 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// AddPragmaHandler - Add the specified pragma handler to the preprocessor. 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// If 'Namespace' is non-null, then it is a token required to exist on the 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pragma line before the pragma string starts, e.g. "STDC" or "GCC". 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void AddPragmaHandler(const char *Namespace, PragmaHandler *Handler); 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2894095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// RemovePragmaHandler - Remove the specific pragma handler from 2904095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// the preprocessor. If \arg Namespace is non-null, then it should 2914095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// be the namespace that \arg Handler was added to. It is an error 2924095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar /// to remove a handler that has not been registered. 2934095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar void RemovePragmaHandler(const char *Namespace, PragmaHandler *Handler); 2944095080aff204008eefb26b100906c6ca2bc4bb6Daniel Dunbar 29553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// EnterMainSourceFile - Enter the specified FileID as the main source file, 2967dcc968f17a6ff9088c9651dddccc8d4025a1271Ted Kremenek /// which implicitly adds the builtin defines etc. 29795041a2029a069386ee67439f6d0fb524a9d184fTed Kremenek void EnterMainSourceFile(); 29853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFile - Add a source file to the top of the include stack and 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. If isMainFile 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// is true, this is the main file for the translation unit. 3022b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner void EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir); 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterMacro - Add a Macro to the top of the include stack and start lexing 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens from it instead of the current buffer. Args specifies the 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// tokens input to a function-like macro. 307e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// 308e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// ILEnd specifies the location of the ')' for a function-like macro or the 309e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner /// identifier for an object-like macro. 310e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner void EnterMacro(Token &Identifier, SourceLocation ILEnd, MacroArgs *Args); 3115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterTokenStream - Add a "macro" context to the top of the include stack, 3136b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// which will cause the lexer to start returning the specified tokens. 3146b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 3156b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If DisableMacroExpansion is true, tokens lexed from the token stream will 3166b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// not be subject to further macro expansion. Otherwise, these tokens will 3176b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// be re-macro-expanded when/if expansion is enabled. 3186b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 3196b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If OwnsTokens is false, this method assumes that the specified stream of 3206b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// tokens has a permanent owner somewhere, so they do not need to be copied. 3216b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// If it is true, it assumes the array of tokens is allocated with new[] and 3226b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// must be freed. 3236b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 3246b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner void EnterTokenStream(const Token *Toks, unsigned NumToks, 3256b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner bool DisableMacroExpansion, bool OwnsTokens); 3265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RemoveTopOfLexerStack - Pop the current lexer/macro exp off the top of the 3285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer stack. This should only be used in situations where the current 3295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// state of the top-of-stack lexer is known. 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RemoveTopOfLexerStack(); 33103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 33203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// EnableBacktrackAtThisPos - From the point that this method is called, and 333ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// until CommitBacktrackedTokens() or Backtrack() is called, the Preprocessor 334ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// keeps track of the lexed tokens so that a subsequent Backtrack() call will 335ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// make the Preprocessor re-lex the same tokens. 33603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 337a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis /// Nested backtracks are allowed, meaning that EnableBacktrackAtThisPos can 338ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be called multiple times and CommitBacktrackedTokens/Backtrack calls will 339ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// be combined with the EnableBacktrackAtThisPos calls in reverse order. 34003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 341ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// NOTE: *DO NOT* forget to call either CommitBacktrackedTokens or Backtrack 342ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// at some point after EnableBacktrackAtThisPos. If you don't, caching of 343ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// tokens will continue indefinitely. 34403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// 345a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void EnableBacktrackAtThisPos(); 34603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 347ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis /// CommitBacktrackedTokens - Disable the last EnableBacktrackAtThisPos call. 348ed5c38682c056c147c8a4abb748b4f285de206ddArgyrios Kyrtzidis void CommitBacktrackedTokens(); 34903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 35003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// Backtrack - Make Preprocessor re-lex the tokens that were lexed since 35103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// EnableBacktrackAtThisPos() was previously called. 352a9e274c01ebae45629d93aaa07be450fb77dd3cbArgyrios Kyrtzidis void Backtrack(); 35303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 35403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// isBacktrackEnabled - True if EnableBacktrackAtThisPos() was called and 35503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis /// caching of tokens is on. 356fad03b2b38a3baea4b67e79e676fee15078e3258Argyrios Kyrtzidis bool isBacktrackEnabled() const { return !BacktrackPositions.empty(); } 35703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 3585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Lex - To lex a token from the preprocessor, just pull a token from the 3595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// current lexer or macro object. 360d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Lex(Token &Result) { 3615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (CurLexer) 3625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer CurLexer->Lex(Result); 363f6452c5421c5db5a7ceff581525f286931d97f1aTed Kremenek else if (CurPTHLexer) 364f6452c5421c5db5a7ceff581525f286931d97f1aTed Kremenek CurPTHLexer->Lex(Result); 3659e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis else if (CurTokenLexer) 3666cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner CurTokenLexer->Lex(Result); 36703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 36803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachingLex(Result); 3695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexNonComment - Lex a token. If it's a comment, keep lexing until we get 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// something not a comment. This is useful in -E -C mode where comments 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// would foul up preprocessor directive handling. 374d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexNonComment(Token &Result) { 3755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer do 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 3775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (Result.getKind() == tok::comment); 3785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 379d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LexUnexpandedToken - This is just like Lex, but this disables macro 3815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expansion of identifier tokens. 382d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void LexUnexpandedToken(Token &Result) { 3835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Disable macro expansion. 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool OldVal = DisableMacroExpansion; 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = true; 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Lex the token. 3875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Lex(Result); 3885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reenable it. 3905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = OldVal; 3915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3936b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// LookAhead - This peeks ahead N tokens and returns that token without 3946b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// consuming any tokens. LookAhead(0) returns the next token that would be 3956b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returned by Lex(), LookAhead(1) returns the token after it, etc. This 3966b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// returns normal tokens after phase 5. As such, it is equivalent to using 3976b884508c3bc97cc9df9516adb92fbf88dd0a2e4Chris Lattner /// 'Lex', not 'LexUnexpandedToken'. 39803db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &LookAhead(unsigned N) { 39903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (CachedLexPos + N < CachedTokens.size()) 40003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return CachedTokens[CachedLexPos+N]; 40103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis else 40203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis return PeekAhead(N+1); 4039e0ed0bd5a3a7bac73973980ff32132a7724e674Argyrios Kyrtzidis } 4043604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 40508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// RevertCachedTokens - When backtracking is enabled and tokens are cached, 40608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// this allows to revert a specific number of tokens. 40708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// Note that the number of tokens being reverted should be up to the last 40808b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis /// backtrack position, not more. 40908b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis void RevertCachedTokens(unsigned N) { 41008b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(isBacktrackEnabled() && 41108b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Should only be called when tokens are cached for backtracking"); 41208b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= signed(BacktrackPositions.back()) 41308b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis && "Should revert tokens up to the last backtrack position, not more"); 41408b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis assert(signed(CachedLexPos) - signed(N) >= 0 && 41508b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis "Corrupted backtrack positions ?"); 41608b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis CachedLexPos -= N; 41708b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis } 41808b2c3743a29a2dddcf72e95f747760e213cdde7Argyrios Kyrtzidis 4193604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// EnterToken - Enters a token in the token stream to be lexed next. If 4203604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// BackTrack() is called afterwards, the token will remain at the insertion 4213604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// point. 4223604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void EnterToken(const Token &Tok) { 4233604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis EnterCachingLexMode(); 4243604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis CachedTokens.insert(CachedTokens.begin()+CachedLexPos, Tok); 4253604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 4263604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis 4273604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// AnnotateCachedTokens - We notify the Preprocessor that if it is caching 4283604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// tokens (because backtrack is enabled) it should replace the most recent 4293604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens with the given annotation token. This function has no effect 4303604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// if backtracking is not enabled. 4313604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// 4323604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// Note that the use of this function is just for optimization; so that the 4333604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// cached tokens doesn't get re-parsed and re-resolved after a backtrack is 4343604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis /// invoked. 4353604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotateCachedTokens(const Token &Tok) { 43647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner assert(Tok.isAnnotation() && "Expected annotation token"); 43783cf05a3b0e655dc8ea1cb4c4e1eef541b770992Chris Lattner if (CachedLexPos != 0 && isBacktrackEnabled()) 4383604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis AnnotatePreviousCachedTokens(Tok); 4393604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis } 44039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 44139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// \brief Replace the last token with an annotation token. 44239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// 44339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// Like AnnotateCachedTokens(), this routine replaces an 44439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// already-parsed (and resolved) token with an annotation 44539a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// token. However, this routine only replaces the last token with 44639a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// the annotation token; it does not affect any other cached 44739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// tokens. This function has no effect if backtracking is not 44839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor /// enabled. 44939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor void ReplaceLastTokenWithAnnotation(const Token &Tok) { 45039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor assert(Tok.isAnnotation() && "Expected annotation token"); 45139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (CachedLexPos != 0 && isBacktrackEnabled()) 45239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor CachedTokens[CachedLexPos-1] = Tok; 45339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 45439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 4555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Diag - Forwarding function for diagnostics. This emits a diagnostic at 456d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner /// the specified Token's location, translating the token's start 4575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// position in the current buffer into a SourcePosition object for rendering. 458adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) { 459836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner return Diags->Report(FullSourceLoc(Loc, getSourceManager()), DiagID); 460adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner } 461adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner 462adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID) { 463836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner return Diags->Report(FullSourceLoc(Tok.getLocation(), getSourceManager()), 464836040f9eafe862fb1607df5c30cd3df0c22c832Chris Lattner DiagID); 465adc4eeb08042a35ae914fc557ffec0cef3df2374Chris Lattner } 4665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling() - Return the 'spelling' of the Tok token. The spelling of a 4685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// token is the characters used to represent the token in the source file 4695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// after trigraph expansion and escaped-newline folding. In particular, this 4705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// wants to get the true, uncanonicalized, spelling of things like digraphs 4715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// UCNs, etc. 472d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner std::string getSpelling(const Token &Tok) const; 4735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// getSpelling - This method is used to get the spelling of a token into a 4755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// preallocated buffer, instead of as an std::string. The caller is required 4765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to allocate enough space for the token, which is guaranteed to be at least 4775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Tok.getLength() bytes long. The length of the actual result is returned. 4785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 4795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Note that this method may do two possible things: it may either fill in 4805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the buffer specified with characters, or it may *change the input pointer* 4815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to point to a constant buffer with the data already in it (avoiding a 4825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// copy). The caller is not allowed to modify the returned buffer pointer 4835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// if an internal buffer is returned. 484d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner unsigned getSpelling(const Token &Tok, const char *&Buffer) const; 485b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 4867216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// getSpellingOfSingleCharacterNumericConstant - Tok is a numeric constant 4877216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner /// with length 1, return the character. 4887216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner char getSpellingOfSingleCharacterNumericConstant(const Token &Tok) const { 4897216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(Tok.is(tok::numeric_constant) && 4907216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner Tok.getLength() == 1 && "Called on unsupported token"); 4917216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner assert(!Tok.needsCleaning() && "Token can't need cleaning with length 1"); 4927216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner 4937216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // If the token is carrying a literal data pointer, just use it. 4947216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner if (const char *D = Tok.getLiteralData()) 4957216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *D; 49628396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek 4977216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // Otherwise, fall back on getCharacterData, which is slower, but always 4987216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner // works. 4997216dc9cb49f47254595120cf15a737cee53f0bdChris Lattner return *SourceMgr.getCharacterData(Tok.getLocation()); 50028396608ec20d44e9d1470e1ea51689bb504d0deTed Kremenek } 5015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 50247246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// CreateString - Plop the specified string into a scratch buffer and set the 50347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// specified token's location and length to it. If specified, the source 50447246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner /// location provides a location of the instantiation point of the token. 50547246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner void CreateString(const char *Buf, unsigned Len, 50647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Token &Tok, SourceLocation SourceLoc = SourceLocation()); 507b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 508b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// \brief Computes the source location just past the end of the 509b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token at this source location. 510b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// 511b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// This routine can be used to produce a source location that 512b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// points just past the end of the token referenced by \p Loc, and 513b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// is generally used when a diagnostic needs to point just after a 514b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// token where it expected something different that it received. If 515b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// the returned source location would not be meaningful (e.g., if 516b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// it points into a macro), this routine returns an invalid 517b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor /// source location. 518b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation getLocForEndOfToken(SourceLocation Loc); 519b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor 5205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// DumpToken - Print the token to stderr, used for debugging. 5215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 522d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void DumpToken(const Token &Tok, bool DumpFlags = false) const; 523c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner void DumpLocation(SourceLocation Loc) const; 5245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void DumpMacro(const MacroInfo &MI) const; 5255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 52697ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// AdvanceToTokenCharacter - Given a location that specifies the start of a 52797ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner /// token, return a new location that specifies a character within the token. 52897ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner SourceLocation AdvanceToTokenCharacter(SourceLocation TokStart,unsigned Char); 52997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 5305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// IncrementPasteCounter - Increment the counters for the number of token 5315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// paste operations performed. If fast was specified, this is a 'fast paste' 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// case we handled. 5335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 5345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void IncrementPasteCounter(bool isFast) { 5355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (isFast) 5365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFastTokenPaste; 5375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 5385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumTokenPaste; 5395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void PrintStats(); 5425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5433f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// HandleMicrosoftCommentPaste - When the macro expander pastes together a 5443f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// comment (/##/) in microsoft mode, this method handles updating the current 5453f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner /// state, returning the token on the next source line. 5463f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner void HandleMicrosoftCommentPaste(Token &Tok); 5473f1cc838f9caf469990f23fccd0940263c0c61ffChris Lattner 5485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 5495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Preprocessor callback methods. These are invoked by a lexer as various 5505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // directives and events are found. 5515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LookUpIdentifierInfo - Given a tok::identifier token, look up the 5535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier information for the token and install it into the token. 554d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner IdentifierInfo *LookUpIdentifierInfo(Token &Identifier, 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *BufPtr = 0); 5565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleIdentifier - This callback is invoked when the lexer reads an 5585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier and has filled in the tokens IdentifierInfo member. This 5595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// callback potentially macro expands it or turns it into a named token (like 5605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// 'for'). 561d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentifier(Token &Identifier); 5625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleEndOfFile - This callback is invoked when the lexer hits the end of 5655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the current file. This either returns the EOF token and returns true, or 5665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// pops a level off the include stack and returns false, at which point the 5675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// client should call lex again. 568d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleEndOfFile(Token &Result, bool isEndOfMacro = false); 5695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 570fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// HandleEndOfTokenLexer - This callback is invoked when the current 571fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner /// TokenLexer hits the end of its token stream. 572fde2bf9befede63e3f01f84519784c17b4c81480Chris Lattner bool HandleEndOfTokenLexer(Token &Result); 5735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleDirective - This callback is invoked when the lexer sees a # token 5755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// at the start of a line. This consumes the directive, modifies the 5765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexer/preprocessor state, and advances the lexer(s) so that the next token 5775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// read is the correct one. 578d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleDirective(Token &Result); 5795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// CheckEndOfDirective - Ensure that the next token is a tok::eom token. If 5815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// not, emit a diagnostic and consume up until the eom. 5825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void CheckEndOfDirective(const char *Directive); 583478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner 584478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// DiscardUntilEndOfDirective - Read and discard all tokens remaining on the 585478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner /// current line until the tok::eom token is found. 586478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void DiscardUntilEndOfDirective(); 587478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner 5885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate: 589d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 590d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PushIncludeMacroStack() { 5919c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek IncludeMacroStack.push_back(IncludeStackInfo(CurLexer.take(), 5929c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.take(), 5939c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer, 5949c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurTokenLexer.take(), 5959c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup)); 596f89963b1e819d5e73796a4f9d7cd70129846e2ecTed Kremenek CurPPLexer = 0; 597d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 598d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 599d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek void PopIncludeMacroStack() { 600caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurLexer.reset(IncludeMacroStack.back().TheLexer); 6019c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPTHLexer.reset(IncludeMacroStack.back().ThePTHLexer); 6029c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurPPLexer = IncludeMacroStack.back().ThePPLexer; 603caaa7df2c78bbd40197823034c0275f3dcbd63e7Ted Kremenek CurTokenLexer.reset(IncludeMacroStack.back().TheTokenLexer); 6049c1b750c59d510e6c9eccb1f37bccc46ccfe6844Ted Kremenek CurDirLookup = IncludeMacroStack.back().TheDirLookup; 605d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek IncludeMacroStack.pop_back(); 606d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek } 607d038def6e3f33bebf8c12bb3a95b2492c154a5ddTed Kremenek 6080ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// AllocateMacroInfo - Allocate a new MacroInfo object with the provide 6090ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// SourceLocation. 6100ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek MacroInfo* AllocateMacroInfo(SourceLocation L); 6110ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek 6120ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// ReleaseMacroInfo - Release the specified MacroInfo. This memory will 6130ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek /// be reused for allocating new MacroInfo objects. 6140301b3ff132a4d986c092d161cb77d74b04cd2a6Chris Lattner void ReleaseMacroInfo(MacroInfo* MI); 6150ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek 61653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// isInPrimaryFile - Return true if we're in the top-level file, not in a 61753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner /// #include. 61853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner bool isInPrimaryFile() const; 6197bfaaaecb3113f955db31e8d8a51acffd1bc0c27Nico Weber 6205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroName - Lex and validate a macro name, which occurs after a 6215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #define or #undef. This emits a diagnostic, sets the token kind to eom, 6225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// and discards the rest of the macro line if the macro name is invalid. 623d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ReadMacroName(Token &MacroNameTok, char isDefineUndef = 0); 6245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadMacroDefinitionArgList - The ( starting an argument list of a macro 6265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// definition has just been read. Lex the rest of the arguments and the 6275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// closing ), updating MI with what we learn. Return true if an error occurs 6285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// parsing the arg list. 6295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadMacroDefinitionArgList(MacroInfo *MI); 6305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// SkipExcludedConditionalBlock - We just read a #if or related directive and 6325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// decided that the subsequent tokens are in the #if'd out portion of the 6335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// file. Lex the rest of the file, until we see an #endif. If 6345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundNonSkipPortion is true, then we have already emitted code for part of 6355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this #if directive, so #else/#elif blocks should never be entered. If 6365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// FoundElse is false, then #else directives are ok, if not, then we have 6375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// already seen one so a #else directive is a duplicate. When this returns, 6385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the caller can lex the first valid token. 6395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void SkipExcludedConditionalBlock(SourceLocation IfTokenLoc, 6405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool FoundNonSkipPortion, bool FoundElse); 6415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 642268ee7016a2811803989487c0ad3799486092c63Ted Kremenek /// PTHSkipExcludedConditionalBlock - A fast PTH version of 643268ee7016a2811803989487c0ad3799486092c63Ted Kremenek /// SkipExcludedConditionalBlock. 644268ee7016a2811803989487c0ad3799486092c63Ted Kremenek void PTHSkipExcludedConditionalBlock(); 645268ee7016a2811803989487c0ad3799486092c63Ted Kremenek 6465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EvaluateDirectiveExpression - Evaluate an integer constant expression that 6475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// may occur after a #if or #elif directive and return it as a bool. If the 6485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// expression is equivalent to "!defined(X)" return X in IfNDefMacro. 6495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool EvaluateDirectiveExpression(IdentifierInfo *&IfNDefMacro); 6505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinPragmas - Install the standard preprocessor pragmas: 6525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// #pragma GCC poison/system_header/dependency and #pragma once. 6535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinPragmas(); 6545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// RegisterBuiltinMacros - Register builtin macros, such as __LINE__ with the 6565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// identifier table. 6575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void RegisterBuiltinMacros(); 6585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *RegisterBuiltinMacro(const char *Name); 6595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// HandleMacroExpandedIdentifier - If an identifier token is read that is to 6615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// be expanded as a macro, handle it and return the next token as 'Tok'. If 6625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// the macro should not be expanded return true, otherwise return false. 663d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner bool HandleMacroExpandedIdentifier(Token &Tok, MacroInfo *MI); 6645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// isNextPPTokenLParen - Determine whether the next preprocessor token to be 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// lexed is a '('. If so, consume the token and return true, if not, this 6675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// method should have no observable side-effect on the lexed tokens. 6685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isNextPPTokenLParen(); 6695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ReadFunctionLikeMacroArgs - After reading "MACRO(", this method is 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invoked to read all of the formal arguments specified for the macro 6725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// invocation. This returns null on error. 673e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner MacroArgs *ReadFunctionLikeMacroArgs(Token &MacroName, MacroInfo *MI, 674e7fb48466afcbf2c4ccdfa658824282fdc3c512cChris Lattner SourceLocation &InstantiationEnd); 6755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// ExpandBuiltinMacro - If an identifier token is read that is to be expanded 6775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// as a builtin macro, handle it and return the next token as 'Tok'. 678d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void ExpandBuiltinMacro(Token &Tok); 6795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle_Pragma - Read a _Pragma directive, slice it up, process it, then 6815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// return the first token after the directive. The _Pragma token has just 6825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// been read into 'Tok'. 683d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void Handle_Pragma(Token &Tok); 6845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// EnterSourceFileWithLexer - Add a lexer to the top of the include stack and 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// start lexing tokens from it instead of the current buffer. 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void EnterSourceFileWithLexer(Lexer *TheLexer, const DirectoryLookup *Dir); 6886137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek 6896137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// EnterSourceFileWithPTH - Add a lexer to the top of the include stack and 6906137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek /// start getting tokens from it using the PTH cache. 6916137dc99ef0c2b14050631367057758b0d596cb3Ted Kremenek void EnterSourceFileWithPTH(PTHLexer *PL, const DirectoryLookup *Dir); 6925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// GetIncludeFilenameSpelling - Turn the specified lexer token into a fully 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// checked and spelled filename, e.g. as an operand of #include. This returns 6955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// true if the input filename was in <>'s or false if it were in ""'s. The 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// caller is expected to provide a buffer that is large enough to hold the 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// spelling of the filename, but is also expected to handle the case when 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// this method decides to use a different buffer. 699f1c99acc544a4e70f308db4e7200ca04cd5a06d2Chris Lattner bool GetIncludeFilenameSpelling(SourceLocation Loc, 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *&BufStart, const char *&BufEnd); 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// LookupFile - Given a "foo" or <foo> reference, look up the indicated file, 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// return null on failure. isAngled indicates whether the file reference is 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// for system #include's or not (i.e. using <> instead of ""). 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const FileEntry *LookupFile(const char *FilenameStart,const char *FilenameEnd, 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isAngled, const DirectoryLookup *FromDir, 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *&CurDir); 70841938c8493b4380df738263166b746eacb33c309Ted Kremenek 70941938c8493b4380df738263166b746eacb33c309Ted Kremenek 71041938c8493b4380df738263166b746eacb33c309Ted Kremenek 71134eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// IsFileLexer - Returns true if we are lexing from a file and not a 71234eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek /// pragma or a macro. 71334eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek static bool IsFileLexer(const Lexer* L, const PreprocessorLexer* P) { 71434eaa24e6c2dc72bbbd5ad09694368cfd09c5f14Ted Kremenek return L ? !L->isPragmaLexer() : P != 0; 71541938c8493b4380df738263166b746eacb33c309Ted Kremenek } 71641938c8493b4380df738263166b746eacb33c309Ted Kremenek 71781d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek static bool IsFileLexer(const IncludeStackInfo& I) { 71881d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(I.TheLexer, I.ThePPLexer); 71941938c8493b4380df738263166b746eacb33c309Ted Kremenek } 72041938c8493b4380df738263166b746eacb33c309Ted Kremenek 72181d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek bool IsFileLexer() const { 72281d24e135c60dcbe421864e6a4334ba99b8fe7ecTed Kremenek return IsFileLexer(CurLexer.get(), CurPPLexer); 72341938c8493b4380df738263166b746eacb33c309Ted Kremenek } 72441938c8493b4380df738263166b746eacb33c309Ted Kremenek 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer //===--------------------------------------------------------------------===// 72603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis // Caching stuff. 72703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void CachingLex(Token &Result); 7283296ccea50e7b6649638bd666181e0825145e898Ted Kremenek bool InCachingLexMode() const { return CurPPLexer == 0 && CurTokenLexer == 0;} 72903db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void EnterCachingLexMode(); 73003db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis void ExitCachingLexMode() { 73103db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis if (InCachingLexMode()) 73203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis RemoveTopOfLexerStack(); 73303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis } 73403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis const Token &PeekAhead(unsigned N); 7353604e3895ecd850291b518e5a82246c888ce9d0fArgyrios Kyrtzidis void AnnotatePreviousCachedTokens(const Token &Tok); 73603db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 73703db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis //===--------------------------------------------------------------------===// 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// Handle*Directive - implement the various preprocessor directives. These 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// should side-effect the current preprocessor object so that the next call 7405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /// to Lex() will return the appropriate token next. 741359cc4475487ea0a660b3e8918334a2866e71c66Chris Lattner void HandleLineDirective(Token &Tok); 742478a18ec47fdb7e0e580a2635648456e9db9ad4fChris Lattner void HandleDigitDirective(Token &Tok); 743d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUserDiagnosticDirective(Token &Tok, bool isWarning); 744d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIdentSCCSDirective(Token &Tok); 7455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // File inclusion. 747d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIncludeDirective(Token &Tok, 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DirectoryLookup *LookupFrom = 0, 7495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isImport = false); 750d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIncludeNextDirective(Token &Tok); 751d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleImportDirective(Token &Tok); 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro handling. 75442e6737f2efb113563140ad794c21c7709250402Chris Lattner void HandleDefineDirective(Token &Tok); 755d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleUndefDirective(Token &Tok); 756d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner // HandleAssertDirective(Token &Tok); 757d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner // HandleUnassertDirective(Token &Tok); 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Conditional Inclusion. 760d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfdefDirective(Token &Tok, bool isIfndef, 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool ReadAnyTokensBeforeDirective); 762d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleIfDirective(Token &Tok, bool ReadAnyTokensBeforeDirective); 763d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleEndifDirective(Token &Tok); 764d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElseDirective(Token &Tok); 765d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandleElifDirective(Token &Tok); 7665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Pragmas. 7685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer void HandlePragmaDirective(); 7695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic: 770d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaOnce(Token &OnceTok); 7712243449253475574fc6f14986ff8f7fce5d46799Chris Lattner void HandlePragmaMark(); 772d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaPoison(Token &PoisonTok); 773d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaSystemHeader(Token &SysHeaderTok); 774d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner void HandlePragmaDependency(Token &DependencyTok); 775636c5ef6572e899d36cec1b0023fb28ba65189e1Chris Lattner void HandlePragmaComment(Token &CommentTok); 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}; 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 778ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek/// PreprocessorFactory - A generic factory interface for lazily creating 779ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek/// Preprocessor objects on-demand when they are needed. 780ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenekclass PreprocessorFactory { 781ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenekpublic: 782ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek virtual ~PreprocessorFactory(); 783ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek virtual Preprocessor* CreatePreprocessor() = 0; 784ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek}; 785ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek 7865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} // end namespace clang 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif 789