Preprocessor.cpp revision 337edcdbec05316b407d0d64865c88ff8597d910
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Preprocess.cpp - C Language Family Preprocessor Implementation ---===// 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 implements the Preprocessor interface. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Options to support: 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -H - Print the name of each header file used. 16f73903a1ded46748e1dfda151f5d037b7b3d31f9Chris Lattner// -d[DNI] - Dump various things. 175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -fworking-directory - #line's with preprocessor's working dir. 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -fpreprocessed 195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -dependency-file,-M,-MM,-MF,-MG,-MP,-MT,-MQ,-MD,-MMD 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -W* 215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -w 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Messages to emit: 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// "Multiple include guards may be useful for:\n" 255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Preprocessor.h" 295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/HeaderSearch.h" 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/MacroInfo.h" 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/Pragma.h" 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Lex/ScratchBuffer.h" 33500d3297d2a21edeac4d46cbcbe21bc2352c2a28Chris Lattner#include "clang/Lex/LexDiagnostic.h" 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceManager.h" 35337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek#include "clang/Basic/FileManager.h" 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TargetInfo.h" 372db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner#include "llvm/ADT/APFloat.h" 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/ADT/SmallVector.h" 3997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner#include "llvm/Support/MemoryBuffer.h" 40bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek#include "llvm/Support/Streams.h" 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 45ec6c574478a22008847d7ebc2498ef3336752096Ted KremenekPreprocessorFactory::~PreprocessorFactory() {} 46ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPreprocessor::Preprocessor(Diagnostic &diags, const LangOptions &opts, 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &target, SourceManager &SM, 4972b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek HeaderSearch &Headers, 5072b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek IdentifierInfoLookup* IILookup) 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Diags(diags), Features(opts), Target(target), FileMgr(Headers.getFileMgr()), 5272b1b15ee88aac0a63e2c1dc53fe22f5ab297b20Ted Kremenek SourceMgr(SM), HeaderInfo(Headers), Identifiers(opts, IILookup), 534b71e3e439080e69cd369313bf2ad2c85bac8267Ted Kremenek CurPPLexer(0), CurDirLookup(0), Callbacks(0) { 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuf = new ScratchBuffer(SourceMgr); 559594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Clear stats. 575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumDirectives = NumDefined = NumUndefined = NumPragma = 0; 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumIf = NumElse = NumEndif = 0; 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumEnteredSourceFiles = 0; 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumMacroExpanded = NumFnMacroExpanded = NumBuiltinMacroExpanded = 0; 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumFastMacroExpanded = NumTokenPaste = NumFastTokenPaste = 0; 625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxIncludeStackDepth = 0; 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumSkipped = 0; 645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Default to discarding comments. 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer KeepComments = false; 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer KeepMacroComments = false; 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro expansion is enabled. 705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = false; 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InMacroArgs = false; 726cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner NumCachedTokenLexers = 0; 735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7403db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedLexPos = 0; 7503db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // "Poison" __VA_ARGS__, which can only appear in the expansion of a macro. 775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This gets unpoisoned where it is allowed. 785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer (Ident__VA_ARGS__ = getIdentifierInfo("__VA_ARGS__"))->setIsPoisoned(); 795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Initialize the pragma handlers. 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers = new PragmaNamespace(0); 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RegisterBuiltinPragmas(); 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Initialize builtin macros like __LINE__ and friends. 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RegisterBuiltinMacros(); 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPreprocessor::~Preprocessor() { 892174a4ff834b72c0a0e3f24e4b62123f30f4cce6Argyrios Kyrtzidis assert(BacktrackPositions.empty() && "EnableBacktrack/Backtrack imbalance!"); 902174a4ff834b72c0a0e3f24e4b62123f30f4cce6Argyrios Kyrtzidis 915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (!IncludeMacroStack.empty()) { 925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete IncludeMacroStack.back().TheLexer; 936cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner delete IncludeMacroStack.back().TheTokenLexer; 945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IncludeMacroStack.pop_back(); 955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 96cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner 97cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner // Free any macro definitions. 98cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner for (llvm::DenseMap<IdentifierInfo*, MacroInfo*>::iterator I = 99cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner Macros.begin(), E = Macros.end(); I != E; ++I) { 1000ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek // We don't need to free the MacroInfo objects directly. These 1010ea76727ae91bca918a8414ed85b530eddcfedebTed Kremenek // will be released when the BumpPtrAllocator 'BP' object gets 1029ee7d456b427e002f7fe1844b64bec8055c8db52Ted Kremenek // destroyed. We still need to run the dstor, however, to free 1039ee7d456b427e002f7fe1844b64bec8055c8db52Ted Kremenek // memory alocated by MacroInfo. 1049ee7d456b427e002f7fe1844b64bec8055c8db52Ted Kremenek I->second->~MacroInfo(); 105cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner I->first->setHasMacroDefinition(false); 106cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 1075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1089594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner // Free any cached macro expanders. 1096cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner for (unsigned i = 0, e = NumCachedTokenLexers; i != e; ++i) 1106cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner delete TokenLexerCache[i]; 1119594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Release pragma information. 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete PragmaHandlers; 1145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Delete the scratch buffer info. 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete ScratchBuf; 117eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner 118eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner delete Callbacks; 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 121337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenekvoid Preprocessor::setPTHManager(PTHManager* pm) { 122337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek PTH.reset(pm); 123337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek FileMgr.setStatCache(PTH->createStatCache()); 124337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek} 125337edcdbec05316b407d0d64865c88ff8597d910Ted Kremenek 126d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::DumpToken(const Token &Tok, bool DumpFlags) const { 127bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << tok::getTokenName(Tok.getKind()) << " '" 128bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << getSpelling(Tok) << "'"; 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!DumpFlags) return; 131c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 132bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\t"; 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.isAtStartOfLine()) 134bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [StartOfLine]"; 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.hasLeadingSpace()) 136bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [LeadingSpace]"; 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.isExpandDisabled()) 138bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [ExpandDisabled]"; 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.needsCleaning()) { 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Start = SourceMgr.getCharacterData(Tok.getLocation()); 141bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [UnClean='" << std::string(Start, Start+Tok.getLength()) 142bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << "']"; 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 144c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 145bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\tLoc=<"; 146c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner DumpLocation(Tok.getLocation()); 147bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << ">"; 148c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner} 149c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 150c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattnervoid Preprocessor::DumpLocation(SourceLocation Loc) const { 151b9c3f966b103f7cfe8e5e60007c4c8b38f7298ebChris Lattner Loc.dump(SourceMgr); 1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::DumpMacro(const MacroInfo &MI) const { 155bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "MACRO: "; 1565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = MI.getNumTokens(); i != e; ++i) { 1575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DumpToken(MI.getReplacementToken(i)); 158bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " "; 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 160bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\n"; 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::PrintStats() { 164bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\n*** Preprocessor Stats:\n"; 165bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << NumDirectives << " directives found:\n"; 166bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumDefined << " #define.\n"; 167bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumUndefined << " #undef.\n"; 168bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " #include/#include_next/#import:\n"; 169bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumEnteredSourceFiles << " source files entered.\n"; 170bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << MaxIncludeStackDepth << " max include stack depth\n"; 171bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumIf << " #if/#ifndef/#ifdef.\n"; 172bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumElse << " #else/#elif.\n"; 173bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumEndif << " #endif.\n"; 174bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumPragma << " #pragma.\n"; 175bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << NumSkipped << " #if/#ifndef#ifdef regions skipped\n"; 176bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek 177bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << NumMacroExpanded << "/" << NumFnMacroExpanded << "/" 178bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << NumBuiltinMacroExpanded << " obj/fn/builtin macros expanded, " 179bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << NumFastMacroExpanded << " on the fast path.\n"; 180bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << (NumFastTokenPaste+NumTokenPaste) 181bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << " token paste (##) operations performed, " 182bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << NumFastTokenPaste << " on the fast path.\n"; 1835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Token Spelling 1875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getSpelling() - Return the 'spelling' of this token. The spelling of a 1915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token are the characters used to represent the token in the source file 1925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// after trigraph expansion and escaped-newline folding. In particular, this 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// wants to get the true, uncanonicalized, spelling of things like digraphs 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// UCNs, etc. 195d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnerstd::string Preprocessor::getSpelling(const Token &Tok) const { 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert((int)Tok.getLength() >= 0 && "Token character range is bogus!"); 197277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this token contains nothing interesting, return it directly. 199277faca30c9f8f72b79f55695cbe3395ec246e7cTed Kremenek const char* TokStart = SourceMgr.getCharacterData(Tok.getLocation()); 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!Tok.needsCleaning()) 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return std::string(TokStart, TokStart+Tok.getLength()); 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Result; 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result.reserve(Tok.getLength()); 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, hard case, relex the characters into the string. 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (const char *Ptr = TokStart, *End = TokStart+Tok.getLength(); 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr != End; ) { 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned CharSize; 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result.push_back(Lexer::getCharAndSizeNoWarn(Ptr, CharSize, Features)); 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr += CharSize; 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Result.size() != unsigned(Tok.getLength()) && 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "NeedsCleaning flag set on something that didn't need cleaning!"); 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Result; 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getSpelling - This method is used to get the spelling of a token into a 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// preallocated buffer, instead of as an std::string. The caller is required 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// to allocate enough space for the token, which is guaranteed to be at least 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Tok.getLength() bytes long. The actual length of the token is returned. 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Note that this method may do two possible things: it may either fill in 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// the buffer specified with characters, or it may *change the input pointer* 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// to point to a constant buffer with the data already in it (avoiding a 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// copy). The caller is not allowed to modify the returned buffer pointer 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// if an internal buffer is returned. 228d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnerunsigned Preprocessor::getSpelling(const Token &Tok, 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *&Buffer) const { 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert((int)Tok.getLength() >= 0 && "Token character range is bogus!"); 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this token is an identifier, just return the string from the identifier 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // table, which is very quick. 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (const IdentifierInfo *II = Tok.getIdentifierInfo()) { 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Buffer = II->getName(); 236e1dccaefe2d44a9f83f8c3f087438a3297254cacChris Lattner return II->getLength(); 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 238b70e3dafb9618f34017061400dc19ac5e3539a6dTed Kremenek 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, compute the start of the token in the input lexer buffer. 24047246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner const char *TokStart = 0; 24147246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner 24247246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner if (Tok.isLiteral()) 24347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner TokStart = Tok.getLiteralData(); 24447246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner 24547246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner if (TokStart == 0) 24647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner TokStart = SourceMgr.getCharacterData(Tok.getLocation()); 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this token contains nothing interesting, return it directly. 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!Tok.needsCleaning()) { 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Buffer = TokStart; 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Tok.getLength(); 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 25347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, hard case, relex the characters into the string. 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer char *OutBuf = const_cast<char*>(Buffer); 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (const char *Ptr = TokStart, *End = TokStart+Tok.getLength(); 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr != End; ) { 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned CharSize; 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer *OutBuf++ = Lexer::getCharAndSizeNoWarn(Ptr, CharSize, Features); 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr += CharSize; 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(unsigned(OutBuf-Buffer) != Tok.getLength() && 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "NeedsCleaning flag set on something that didn't need cleaning!"); 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return OutBuf-Buffer; 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CreateString - Plop the specified string into a scratch buffer and return a 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// location for it. If specified, the source location provides a source 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// location for the token. 27247246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattnervoid Preprocessor::CreateString(const char *Buf, unsigned Len, Token &Tok, 27347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner SourceLocation InstantiationLoc) { 27447246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Tok.setLength(Len); 27547246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner 27647246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner const char *DestPtr; 27747246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner SourceLocation Loc = ScratchBuf->getToken(Buf, Len, DestPtr); 27847246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner 27947246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner if (InstantiationLoc.isValid()) 28047246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Loc = SourceMgr.createInstantiationLoc(Loc, InstantiationLoc, Len); 28147246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Tok.setLocation(Loc); 28247246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner 28347246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner // If this is a literal token, set the pointer data. 28447246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner if (Tok.isLiteral()) 28547246be8ac5b0ddde6c402b8fc6946b6135487b5Chris Lattner Tok.setLiteralData(DestPtr); 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 28997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner/// AdvanceToTokenCharacter - Given a location that specifies the start of a 29097ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner/// token, return a new location that specifies a character within the token. 29197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris LattnerSourceLocation Preprocessor::AdvanceToTokenCharacter(SourceLocation TokStart, 29297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner unsigned CharNo) { 2939dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // If they request the first char of the token, we're trivially done. If this 2949dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // is a macro expansion, it doesn't make sense to point to a character within 2959dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // the instantiation point (the name). We could point to the source 2969dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // character, but without also pointing to instantiation info, this is 2979dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // confusing. 2989dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner if (CharNo == 0 || TokStart.isMacroID()) return TokStart; 29997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 300f7cf85b330bedd2877e1371fb0a83e99751ae162Chris Lattner // Figure out how many physical characters away the specified instantiation 30197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // character is. This needs to take into consideration newlines and 30297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // trigraphs. 3039dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner const char *TokPtr = SourceMgr.getCharacterData(TokStart); 3049dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner unsigned PhysOffset = 0; 30597ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 30697ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // The usual case is that tokens don't contain anything interesting. Skip 30797ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // over the uninteresting characters. If a token only consists of simple 30897ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // chars, this method is extremely fast. 30997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner while (CharNo && Lexer::isObviouslySimpleCharacter(*TokPtr)) 3109dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner ++TokPtr, --CharNo, ++PhysOffset; 31197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 31228c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner // If we have a character that may be a trigraph or escaped newline, use a 31397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // lexer to parse it correctly. 31497ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner if (CharNo != 0) { 31597ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // Skip over characters the remaining characters. 31628c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner for (; CharNo; --CharNo) { 31728c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner unsigned Size; 31828c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner Lexer::getCharAndSizeNoWarn(TokPtr, Size, Features); 31928c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner TokPtr += Size; 32028c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner PhysOffset += Size; 32128c90ad7ef7c609a0b10c2f68b519ef69e7084d1Chris Lattner } 32297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner } 3239dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner 3249dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner return TokStart.getFileLocWithOffset(PhysOffset); 32597ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner} 32697ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 32797ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 32853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner//===----------------------------------------------------------------------===// 32953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// Preprocessor Initialization Methods 33053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner//===----------------------------------------------------------------------===// 33153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 33253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// Append a #define line to Buf for Macro. Macro should be of the form XXX, 33353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit 33453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// "#define XXX Y z W". To get a #define with no value, use "XXX=". 33553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattnerstatic void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro, 33653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner const char *Command = "#define ") { 33753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Command, Command+strlen(Command)); 33853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner if (const char *Equal = strchr(Macro, '=')) { 33953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Turn the = into ' '. 34053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Macro, Equal); 34153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back(' '); 34253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Equal+1, Equal+strlen(Equal)); 34353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner } else { 34453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Push "macroname 1". 34553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Macro, Macro+strlen(Macro)); 34653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back(' '); 34753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back('1'); 34853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner } 34953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back('\n'); 35053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner} 35153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 3522db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner/// PickFP - This is used to pick a value based on the FP semantics of the 3532db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner/// specified FP model. 3542db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattnertemplate <typename T> 3552db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattnerstatic T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal, 3562db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal) { 3572db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner if (Sem == &llvm::APFloat::IEEEsingle) 3582db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return IEEESingleVal; 3592db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner if (Sem == &llvm::APFloat::IEEEdouble) 3602db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return IEEEDoubleVal; 3612db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner if (Sem == &llvm::APFloat::x87DoubleExtended) 3622db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return X87DoubleExtendedVal; 3632db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner assert(Sem == &llvm::APFloat::PPCDoubleDouble); 3642db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return PPCDoubleDoubleVal; 3652db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner} 3662db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 3672db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattnerstatic void DefineFloatMacros(std::vector<char> &Buf, const char *Prefix, 3682db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner const llvm::fltSemantics *Sem) { 369e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner const char *DenormMin, *Epsilon, *Max, *Min; 370e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DenormMin = PickFP(Sem, "1.40129846e-45F", "4.9406564584124654e-324", 371e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "3.64519953188247460253e-4951L", 372e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "4.94065645841246544176568792868221e-324L"); 373e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int Digits = PickFP(Sem, 6, 15, 18, 31); 374e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner Epsilon = PickFP(Sem, "1.19209290e-7F", "2.2204460492503131e-16", 375e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "1.08420217248550443401e-19L", 376e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "4.94065645841246544176568792868221e-324L"); 377e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int HasInifinity = 1, HasQuietNaN = 1; 378e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int MantissaDigits = PickFP(Sem, 24, 53, 64, 106); 379e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int Min10Exp = PickFP(Sem, -37, -307, -4931, -291); 380e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int Max10Exp = PickFP(Sem, 38, 308, 4932, 308); 381e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int MinExp = PickFP(Sem, -125, -1021, -16381, -968); 382e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024); 383e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner Min = PickFP(Sem, "1.17549435e-38F", "2.2250738585072014e-308", 384e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "3.36210314311209350626e-4932L", 385e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "2.00416836000897277799610805135016e-292L"); 386e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner Max = PickFP(Sem, "3.40282347e+38F", "1.7976931348623157e+308", 387e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "1.18973149535723176502e+4932L", 388e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "1.79769313486231580793728971405301e+308L"); 3892db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 3902db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner char MacroBuf[60]; 3912db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner sprintf(MacroBuf, "__%s_DENORM_MIN__=%s", Prefix, DenormMin); 3922db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 393e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_DIG__=%d", Prefix, Digits); 394e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 395e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_EPSILON__=%s", Prefix, Epsilon); 396e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 397e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_HAS_INFINITY__=%d", Prefix, HasInifinity); 398e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 399e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_HAS_QUIET_NAN__=%d", Prefix, HasQuietNaN); 400e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 401e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MANT_DIG__=%d", Prefix, MantissaDigits); 402e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 403e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MAX_10_EXP__=%d", Prefix, Max10Exp); 404e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 405e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MAX_EXP__=%d", Prefix, MaxExp); 406e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 407e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MAX__=%s", Prefix, Max); 408e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 409e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MIN_10_EXP__=(%d)", Prefix, Min10Exp); 410e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 411e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MIN_EXP__=(%d)", Prefix, MinExp); 412e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 413e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MIN__=%s", Prefix, Min); 414e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 415d427ad4cceab4481be0ac5cc2a190148ccc181e2Chris Lattner sprintf(MacroBuf, "__%s_HAS_DENORM__=1", Prefix); 416d427ad4cceab4481be0ac5cc2a190148ccc181e2Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 4172db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner} 4182db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 41953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 420996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro 421996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner/// named MacroName with the max value for a type with width 'TypeWidth' a 422996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL). 423996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattnerstatic void DefineTypeSize(const char *MacroName, unsigned TypeWidth, 424996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner const char *ValSuffix, bool isSigned, 425996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner std::vector<char> &Buf) { 426996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner char MacroBuf[60]; 427996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner uint64_t MaxVal; 428996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner if (isSigned) 429996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner MaxVal = (1LL << (TypeWidth - 1)) - 1; 430996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner else 431996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner MaxVal = ~0LL >> (64-TypeWidth); 432996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner 433996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner sprintf(MacroBuf, "%s=%llu%s", MacroName, MaxVal, ValSuffix); 434996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 435996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner} 436996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner 4372b5abf515f9696912452f431c7738691cf97f4f1Chris Lattnerstatic void DefineType(const char *MacroName, TargetInfo::IntType Ty, 4382b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner std::vector<char> &Buf) { 4392b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner char MacroBuf[60]; 4402b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner sprintf(MacroBuf, "%s=%s", MacroName, TargetInfo::getTypeName(Ty)); 4412b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 4422b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner} 4432b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner 4442b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner 44553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattnerstatic void InitializePredefinedMacros(Preprocessor &PP, 44653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner std::vector<char> &Buf) { 44703c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner char MacroBuf[60]; 44862213d90822848110e5f4125491351697d5a302cChris Lattner // Compiler version introspection macros. 44962213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__llvm__=1"); // LLVM Backend 45062213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__clang__=1"); // Clang Frontend 45162213d90822848110e5f4125491351697d5a302cChris Lattner 45262213d90822848110e5f4125491351697d5a302cChris Lattner // Currently claim to be compatible with GCC 4.2.1-5621. 45362213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__APPLE_CC__=5621"); 45462213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUC_MINOR__=2"); 45562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUC_PATCHLEVEL__=1"); 45662213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUC__=4"); 45762213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GXX_ABI_VERSION=1002"); 45862213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__VERSION__=\"4.2.1 (Apple Computer, Inc. " 45962213d90822848110e5f4125491351697d5a302cChris Lattner "build 5621) (dot 3)\""); 46062213d90822848110e5f4125491351697d5a302cChris Lattner 46162213d90822848110e5f4125491351697d5a302cChris Lattner 46262213d90822848110e5f4125491351697d5a302cChris Lattner // Initialize language-specific preprocessor defines. 46362213d90822848110e5f4125491351697d5a302cChris Lattner 46453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // FIXME: Implement magic like cpp_init_builtins for things like __STDC__ 46553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // and __DATE__ etc. 46653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // These should all be defined in the preprocessor according to the 46753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // current language configuration. 4687e0fbb2561fadf8c1fce5fdb588f5db2f3cae51fSteve Naroff if (!PP.getLangOptions().Microsoft) 4697e0fbb2561fadf8c1fce5fdb588f5db2f3cae51fSteve Naroff DefineBuiltinMacro(Buf, "__STDC__=1"); 470c1571453de3db2b26c15cc13115fac4ece84aa7cDaniel Dunbar if (PP.getLangOptions().AsmPreprocessor) 471c1571453de3db2b26c15cc13115fac4ece84aa7cDaniel Dunbar DefineBuiltinMacro(Buf, "__ASSEMBLER__=1"); 47253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner if (PP.getLangOptions().C99 && !PP.getLangOptions().CPlusPlus) 47353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC_VERSION__=199901L"); 47453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner else if (0) // STDC94 ? 47553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC_VERSION__=199409L"); 47653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 47753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC_HOSTED__=1"); 478fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar if (PP.getLangOptions().ObjC1) { 47953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__OBJC__=1"); 480fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar 481fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar if (PP.getLangOptions().getGCMode() == LangOptions::NonGC) { 482fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__weak="); 483fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__strong="); 484fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar } else { 485fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__weak=__attribute__((objc_gc(weak)))"); 486fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__strong=__attribute__((objc_gc(strong)))"); 487fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__OBJC_GC__=1"); 488fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar } 489fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar 490fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar if (PP.getLangOptions().NeXTRuntime) 491fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__NEXT_RUNTIME__=1"); 492fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar } 4939b533164570a67c81ad49f3691f02608530a042eChris Lattner 494eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner // darwin_constant_cfstrings controls this. This is also dependent 495eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner // on other things like the runtime I believe. This is set even for C code. 496eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner DefineBuiltinMacro(Buf, "__CONSTANT_CFSTRINGS__=1"); 497eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner 49873b17cd017f70d0bf7ca2dbb12f09f99081d7fdbSteve Naroff if (PP.getLangOptions().ObjC2) 49973b17cd017f70d0bf7ca2dbb12f09f99081d7fdbSteve Naroff DefineBuiltinMacro(Buf, "OBJC_NEW_PROPERTIES"); 5008ee529b5671295ea38c249df8b9d3766c905cfa7Steve Naroff 501048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner if (PP.getLangOptions().PascalStrings) 502048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner DefineBuiltinMacro(Buf, "__PASCAL_STRINGS__"); 503048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner 50462213d90822848110e5f4125491351697d5a302cChris Lattner if (PP.getLangOptions().Blocks) { 50562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__block=__attribute__((__blocks__(byref)))"); 50662213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__BLOCKS__=1"); 5072b43ad9588b8c7f0c9fdc1d95f4f972257215fcaChris Lattner } 50862213d90822848110e5f4125491351697d5a302cChris Lattner 50962213d90822848110e5f4125491351697d5a302cChris Lattner if (PP.getLangOptions().CPlusPlus) { 51062213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__DEPRECATED=1"); 51162213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__EXCEPTIONS=1"); 51262213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUG__=4"); 51362213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GXX_WEAK__=1"); 51462213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__cplusplus=1"); 51562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__private_extern__=extern"); 51662213d90822848110e5f4125491351697d5a302cChris Lattner } 51762213d90822848110e5f4125491351697d5a302cChris Lattner 51862213d90822848110e5f4125491351697d5a302cChris Lattner // Filter out some microsoft extensions when trying to parse in ms-compat 51962213d90822848110e5f4125491351697d5a302cChris Lattner // mode. 52062213d90822848110e5f4125491351697d5a302cChris Lattner if (PP.getLangOptions().Microsoft) { 521239f07384fe5e7194e780d98a17553084efeeb44Steve Naroff DefineBuiltinMacro(Buf, "_cdecl=__cdecl"); 52203c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__int8=__INT8_TYPE__"); 52303c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__int16=__INT16_TYPE__"); 52403c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__int32=__INT32_TYPE__"); 52503c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__int64=__INT64_TYPE__"); 52662213d90822848110e5f4125491351697d5a302cChris Lattner } 52762213d90822848110e5f4125491351697d5a302cChris Lattner 52862213d90822848110e5f4125491351697d5a302cChris Lattner // Initialize target-specific preprocessor defines. 5299b533164570a67c81ad49f3691f02608530a042eChris Lattner const TargetInfo &TI = PP.getTargetInfo(); 5309b533164570a67c81ad49f3691f02608530a042eChris Lattner 5319b533164570a67c81ad49f3691f02608530a042eChris Lattner // Define type sizing macros based on the target properties. 5329b533164570a67c81ad49f3691f02608530a042eChris Lattner assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); 5339b533164570a67c81ad49f3691f02608530a042eChris Lattner DefineBuiltinMacro(Buf, "__CHAR_BIT__=8"); 5342db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 535659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner unsigned IntMaxWidth; 536659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner const char *IntMaxSuffix; 537659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner if (TI.getIntMaxType() == TargetInfo::SignedLongLong) { 538659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner IntMaxWidth = TI.getLongLongWidth(); 539659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner IntMaxSuffix = "LL"; 540659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner } else if (TI.getIntMaxType() == TargetInfo::SignedLong) { 541659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner IntMaxWidth = TI.getLongWidth(); 542659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner IntMaxSuffix = "L"; 543659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner } else { 544659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner assert(TI.getIntMaxType() == TargetInfo::SignedInt); 545659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner IntMaxWidth = TI.getIntWidth(); 546659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner IntMaxSuffix = ""; 547659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner } 548659dc14559f7dc6e635810d5e0f6dca643549817Chris Lattner 54986d85b8e5e55db3079c9c22aecdb30d830793a50Chris Lattner DefineTypeSize("__SCHAR_MAX__", TI.getCharWidth(), "", true, Buf); 55086d85b8e5e55db3079c9c22aecdb30d830793a50Chris Lattner DefineTypeSize("__SHRT_MAX__", TI.getShortWidth(), "", true, Buf); 55186d85b8e5e55db3079c9c22aecdb30d830793a50Chris Lattner DefineTypeSize("__INT_MAX__", TI.getIntWidth(), "", true, Buf); 55286d85b8e5e55db3079c9c22aecdb30d830793a50Chris Lattner DefineTypeSize("__LONG_MAX__", TI.getLongWidth(), "L", true, Buf); 55386d85b8e5e55db3079c9c22aecdb30d830793a50Chris Lattner DefineTypeSize("__LONG_LONG_MAX__", TI.getLongLongWidth(), "LL", true, Buf); 55486d85b8e5e55db3079c9c22aecdb30d830793a50Chris Lattner DefineTypeSize("__WCHAR_MAX__", TI.getWCharWidth(), "", true, Buf); 555996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner DefineTypeSize("__INTMAX_MAX__", IntMaxWidth, IntMaxSuffix, true, Buf); 556996feccdec6c865a2f9d11faac7e0970e7aebb1bChris Lattner 5572b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Buf); 5582b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Buf); 5592b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Buf); 5602b5abf515f9696912452f431c7738691cf97f4f1Chris Lattner DefineType("__SIZE_TYPE__", TI.getSizeType(), Buf); 5613c3b155ea8dfa29954a689a855d537a9ff2f12afChris Lattner DefineType("__WCHAR_TYPE__", TI.getWCharType(), Buf); 5623c3b155ea8dfa29954a689a855d537a9ff2f12afChris Lattner // FIXME: TargetInfo hookize __WINT_TYPE__. 5633c3b155ea8dfa29954a689a855d537a9ff2f12afChris Lattner DefineBuiltinMacro(Buf, "__WINT_TYPE__=int"); 5643c3b155ea8dfa29954a689a855d537a9ff2f12afChris Lattner 5652db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineFloatMacros(Buf, "FLT", &TI.getFloatFormat()); 5662db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineFloatMacros(Buf, "DBL", &TI.getDoubleFormat()); 5672db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineFloatMacros(Buf, "LDBL", &TI.getLongDoubleFormat()); 56803c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner 56903c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner // Define a __POINTER_WIDTH__ macro for stdint.h. 57003c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner sprintf(MacroBuf, "__POINTER_WIDTH__=%d", (int)TI.getPointerWidth(0)); 57103c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 57203c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner 57303c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner if (!TI.isCharSigned()) 57403c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__CHAR_UNSIGNED__"); 57503c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner 57603c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner // Define fixed-sized integer types for stdint.h 57703c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner assert(TI.getCharWidth() == 8 && "unsupported target types"); 57803c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner assert(TI.getShortWidth() == 16 && "unsupported target types"); 57903c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__INT8_TYPE__=char"); 58003c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__INT16_TYPE__=short"); 58103c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner 58203c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner if (TI.getIntWidth() == 32) 58303c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__INT32_TYPE__=int"); 58403c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner else { 58503c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner assert(TI.getLongLongWidth() == 32 && "unsupported target types"); 58603c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__INT32_TYPE__=long long"); 58703c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner } 58803c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner 58903c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner // 16-bit targets doesn't necessarily have a 64-bit type. 59003c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner if (TI.getLongLongWidth() == 64) 59103c972767e6f1a9be8540f29edd110b27fbb6b59Chris Lattner DefineBuiltinMacro(Buf, "__INT64_TYPE__=long long"); 5920e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner 593d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner // Add __builtin_va_list typedef. 594d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner { 5959b533164570a67c81ad49f3691f02608530a042eChris Lattner const char *VAList = TI.getVAListDeclaration(); 596d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner Buf.insert(Buf.end(), VAList, VAList+strlen(VAList)); 597d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner Buf.push_back('\n'); 598d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner } 59953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 6009b533164570a67c81ad49f3691f02608530a042eChris Lattner if (const char *Prefix = TI.getUserLabelPrefix()) { 60112f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner sprintf(MacroBuf, "__USER_LABEL_PREFIX__=%s", Prefix); 60212f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 6033fdf4678935b27c3d3fd4eb10bf9f5ab98dc0d99Chris Lattner } 6043fdf4678935b27c3d3fd4eb10bf9f5ab98dc0d99Chris Lattner 6059b533164570a67c81ad49f3691f02608530a042eChris Lattner // Build configuration options. FIXME: these should be controlled by 6069b533164570a67c81ad49f3691f02608530a042eChris Lattner // command line options or something. 60753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__DYNAMIC__=1"); 60853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__FINITE_MATH_ONLY__=0"); 60953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__NO_INLINE__=1"); 61053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__PIC__=1"); 6119b533164570a67c81ad49f3691f02608530a042eChris Lattner 61212f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner // Macros to control C99 numerics and <float.h> 61312f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, "__FLT_EVAL_METHOD__=0"); 61412f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, "__FLT_RADIX__=2"); 61512f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner sprintf(MacroBuf, "__DECIMAL_DIG__=%d", 61612f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33)); 61712f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 61812f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner 6199b533164570a67c81ad49f3691f02608530a042eChris Lattner // Get other target #defines. 6209b533164570a67c81ad49f3691f02608530a042eChris Lattner TI.getTargetDefines(Buf); 62153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 62253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // FIXME: Should emit a #line directive here. 62353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner} 62453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 62553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 62653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner/// EnterMainSourceFile - Enter the specified FileID as the main source file, 6276b61602bc7695d40b3c4d09032be1ca1dd0b3c31Nate Begeman/// which implicitly adds the builtin defines etc. 62895041a2029a069386ee67439f6d0fb524a9d184fTed Kremenekvoid Preprocessor::EnterMainSourceFile() { 62995041a2029a069386ee67439f6d0fb524a9d184fTed Kremenek 6302b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner FileID MainFileID = SourceMgr.getMainFileID(); 63195041a2029a069386ee67439f6d0fb524a9d184fTed Kremenek 63253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Enter the main file source buffer. 63353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner EnterSourceFile(MainFileID, 0); 63453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 635b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner // Tell the header info that the main file was entered. If the file is later 636b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner // #imported, it won't be re-entered. 6372b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner if (const FileEntry *FE = SourceMgr.getFileEntryForID(MainFileID)) 638b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner HeaderInfo.IncrementIncludeCount(FE); 639b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner 64053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner std::vector<char> PrologFile; 64153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner PrologFile.reserve(4080); 64253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 64353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Install things like __POWERPC__, __GNUC__, etc into the macro table. 64453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner InitializePredefinedMacros(*this, PrologFile); 64553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 64653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Add on the predefines from the driver. 647aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner PrologFile.insert(PrologFile.end(), Predefines.begin(), Predefines.end()); 64853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 64953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Memory buffer must end with a null byte! 65053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner PrologFile.push_back(0); 65153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 65253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Now that we have emitted the predefined macros, #includes, etc into 65353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // PrologFile, preprocess it to populate the initial preprocessor state. 65453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner llvm::MemoryBuffer *SB = 65553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner llvm::MemoryBuffer::getMemBufferCopy(&PrologFile.front(),&PrologFile.back(), 65653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner "<predefines>"); 65753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner assert(SB && "Cannot fail to create predefined source buffer"); 6582b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner FileID FID = SourceMgr.createFileIDForMemBuffer(SB); 6592b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner assert(!FID.isInvalid() && "Could not create FileID for predefines?"); 66053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 66153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Start parsing the predefines. 6622b2453a7d8fe732561795431f39ceb2b2a832d84Chris Lattner EnterSourceFile(FID, 0); 66353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner} 66497ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 6675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Lexer Event Handling. 6685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 6695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// LookUpIdentifierInfo - Given a tok::identifier token, look up the 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// identifier information for the token and install it into the token. 672d217773f106856a11879ec79dc468efefaf2ee75Chris LattnerIdentifierInfo *Preprocessor::LookUpIdentifierInfo(Token &Identifier, 6735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *BufPtr) { 67422f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner assert(Identifier.is(tok::identifier) && "Not an identifier!"); 6755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Identifier.getIdentifierInfo() == 0 && "Identinfo already exists!"); 6765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up this token, see if it is a macro, or if it is a language keyword. 6785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II; 6795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BufPtr && !Identifier.needsCleaning()) { 6805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // No cleaning needed, just use the characters from the lexed buffer. 6815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II = getIdentifierInfo(BufPtr, BufPtr+Identifier.getLength()); 6825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 6835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Cleaning needed, alloca a buffer, clean into it, then use the buffer. 684c35717a1b34269fc5d78226b1624f53e1c073ed6Chris Lattner llvm::SmallVector<char, 64> IdentifierBuffer; 685c35717a1b34269fc5d78226b1624f53e1c073ed6Chris Lattner IdentifierBuffer.resize(Identifier.getLength()); 686c35717a1b34269fc5d78226b1624f53e1c073ed6Chris Lattner const char *TmpBuf = &IdentifierBuffer[0]; 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned Size = getSpelling(Identifier, TmpBuf); 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II = getIdentifierInfo(TmpBuf, TmpBuf+Size); 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Identifier.setIdentifierInfo(II); 6915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return II; 6925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandleIdentifier - This callback is invoked when the lexer reads an 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// identifier. This callback looks up the identifier in the map and/or 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// potentially macro expands it or turns it into a named token (like 'for'). 6986a170eb3ea6d6319277becabef68eb1a26bf8766Chris Lattner/// 6996a170eb3ea6d6319277becabef68eb1a26bf8766Chris Lattner/// Note that callers of this method are guarded by checking the 7006a170eb3ea6d6319277becabef68eb1a26bf8766Chris Lattner/// IdentifierInfo's 'isHandleIdentifierCase' bit. If this method changes, the 7016a170eb3ea6d6319277becabef68eb1a26bf8766Chris Lattner/// IdentifierInfo methods that compute these properties will need to change to 7026a170eb3ea6d6319277becabef68eb1a26bf8766Chris Lattner/// match. 703d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandleIdentifier(Token &Identifier) { 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Identifier.getIdentifierInfo() && 7055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle identifiers without identifier info!"); 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo &II = *Identifier.getIdentifierInfo(); 7085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this identifier was poisoned, and if it was not produced from a macro 7105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expansion, emit an error. 7111a531570d294ffc300cce1bc5e73de847a370f4fTed Kremenek if (II.isPoisoned() && CurPPLexer) { 7125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (&II != Ident__VA_ARGS__) // We warn about __VA_ARGS__ with poisoning. 7135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Identifier, diag::err_pp_used_poisoned_id); 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Identifier, diag::ext_pp_bad_vaargs_use); 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro to be expanded, do it. 719cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner if (MacroInfo *MI = getMacroInfo(&II)) { 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!DisableMacroExpansion && !Identifier.isExpandDisabled()) { 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MI->isEnabled()) { 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!HandleMacroExpandedIdentifier(Identifier, MI)) 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 7245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.10.3.4p2 says that a disabled macro may never again be 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expanded, even if it's in a context where it could be expanded in the 7275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // future. 728d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Identifier.setFlag(Token::DisableExpand); 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C++ 2.11p2: If this is an alternative representation of a C++ operator, 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // then we act as if it is the actual operator and not the textual 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // representation of it. 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II.isCPlusPlusOperatorKeyword()) 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Identifier.setIdentifierInfo(0); 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is an extension token, diagnose its use. 740b4eaf9cf5f79c86a3f7564f4dfdea57f165ca45cSteve Naroff // We avoid diagnosing tokens that originate from macro definitions. 741b4eaf9cf5f79c86a3f7564f4dfdea57f165ca45cSteve Naroff if (II.isExtensionToken() && Features.C99 && !DisableMacroExpansion) 7425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Identifier, diag::ext_token_used); 7435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 744