Preprocessor.cpp revision 1a531570d294ffc300cce1bc5e73de847a370f4f
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. 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// -d[MDNI] - 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" 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/Diagnostic.h" 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/SourceManager.h" 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/TargetInfo.h" 362db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner#include "llvm/ADT/APFloat.h" 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/ADT/SmallVector.h" 3897ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner#include "llvm/Support/MemoryBuffer.h" 39bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek#include "llvm/Support/Streams.h" 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 44ec6c574478a22008847d7ebc2498ef3336752096Ted KremenekPreprocessorFactory::~PreprocessorFactory() {} 45ec6c574478a22008847d7ebc2498ef3336752096Ted Kremenek 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPreprocessor::Preprocessor(Diagnostic &diags, const LangOptions &opts, 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer TargetInfo &target, SourceManager &SM, 485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer HeaderSearch &Headers) 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer : Diags(diags), Features(opts), Target(target), FileMgr(Headers.getFileMgr()), 505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceMgr(SM), HeaderInfo(Headers), Identifiers(opts), 514b71e3e439080e69cd369313bf2ad2c85bac8267Ted Kremenek CurPPLexer(0), CurDirLookup(0), Callbacks(0) { 525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ScratchBuf = new ScratchBuffer(SourceMgr); 539594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Clear stats. 555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumDirectives = NumDefined = NumUndefined = NumPragma = 0; 565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumIf = NumElse = NumEndif = 0; 575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumEnteredSourceFiles = 0; 585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumMacroExpanded = NumFnMacroExpanded = NumBuiltinMacroExpanded = 0; 595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumFastMacroExpanded = NumTokenPaste = NumFastTokenPaste = 0; 605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer MaxIncludeStackDepth = 0; 615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NumSkipped = 0; 625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Default to discarding comments. 645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer KeepComments = false; 655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer KeepMacroComments = false; 665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Macro expansion is enabled. 685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DisableMacroExpansion = false; 695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer InMacroArgs = false; 706cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner NumCachedTokenLexers = 0; 715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7203db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis CachedLexPos = 0; 7303db1b31dd926409b7defc1c90b66549464652c0Argyrios Kyrtzidis 745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // "Poison" __VA_ARGS__, which can only appear in the expansion of a macro. 755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This gets unpoisoned where it is allowed. 765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer (Ident__VA_ARGS__ = getIdentifierInfo("__VA_ARGS__"))->setIsPoisoned(); 775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Initialize the pragma handlers. 795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer PragmaHandlers = new PragmaNamespace(0); 805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RegisterBuiltinPragmas(); 815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Initialize builtin macros like __LINE__ and friends. 835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer RegisterBuiltinMacros(); 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerPreprocessor::~Preprocessor() { 872174a4ff834b72c0a0e3f24e4b62123f30f4cce6Argyrios Kyrtzidis assert(BacktrackPositions.empty() && "EnableBacktrack/Backtrack imbalance!"); 882174a4ff834b72c0a0e3f24e4b62123f30f4cce6Argyrios Kyrtzidis 895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (!IncludeMacroStack.empty()) { 905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete IncludeMacroStack.back().TheLexer; 916cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner delete IncludeMacroStack.back().TheTokenLexer; 925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IncludeMacroStack.pop_back(); 935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 94cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner 95cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner // Free any macro definitions. 96cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner for (llvm::DenseMap<IdentifierInfo*, MacroInfo*>::iterator I = 97cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner Macros.begin(), E = Macros.end(); I != E; ++I) { 98cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner // Free the macro definition. 99cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner delete I->second; 100cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner I->second = 0; 101cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner I->first->setHasMacroDefinition(false); 102cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner } 1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1049594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner // Free any cached macro expanders. 1056cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner for (unsigned i = 0, e = NumCachedTokenLexers; i != e; ++i) 1066cfe7594a46b5d270142cfcb688a9c1a3a487a48Chris Lattner delete TokenLexerCache[i]; 1079594acf32de2939b15eafa8fe818607bfc56bf66Chris Lattner 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Release pragma information. 1095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete PragmaHandlers; 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Delete the scratch buffer info. 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer delete ScratchBuf; 113eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner 114eb50ed88c2aa040fac08bf2a50bde4dd3da6eb19Chris Lattner delete Callbacks; 1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Diag - Forwarding function for diagnostics. This emits a diagnostic at 118d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner/// the specified Token's location, translating the token's start 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// position in the current buffer into a SourcePosition object for rendering. 1203692b09faa9fe346f39bc922db6dce48cdcc3f63Chris LattnerDiagnosticInfo Preprocessor::Diag(SourceLocation Loc, unsigned DiagID) { 1213692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return Diags.Report(getFullLoc(Loc), DiagID); 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1243692b09faa9fe346f39bc922db6dce48cdcc3f63Chris LattnerDiagnosticInfo Preprocessor::Diag(const Token &Tok, unsigned DiagID) { 1253692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner return Diags.Report(getFullLoc(Tok.getLocation()), DiagID); 1263692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner} 1273692b09faa9fe346f39bc922db6dce48cdcc3f63Chris Lattner 128d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::DumpToken(const Token &Tok, bool DumpFlags) const { 129bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << tok::getTokenName(Tok.getKind()) << " '" 130bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << getSpelling(Tok) << "'"; 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!DumpFlags) return; 133c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 134bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\t"; 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.isAtStartOfLine()) 136bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [StartOfLine]"; 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.hasLeadingSpace()) 138bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [LeadingSpace]"; 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.isExpandDisabled()) 140bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [ExpandDisabled]"; 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (Tok.needsCleaning()) { 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Start = SourceMgr.getCharacterData(Tok.getLocation()); 143bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " [UnClean='" << std::string(Start, Start+Tok.getLength()) 144bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << "']"; 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 146c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 147bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\tLoc=<"; 148c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner DumpLocation(Tok.getLocation()); 149bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << ">"; 150c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner} 151c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 152c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattnervoid Preprocessor::DumpLocation(SourceLocation Loc) const { 153c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner SourceLocation LogLoc = SourceMgr.getLogicalLoc(Loc); 154bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << SourceMgr.getSourceName(LogLoc) << ':' 155bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << SourceMgr.getLineNumber(LogLoc) << ':' 156109949a5f5f8c1e9f917095706639167cfe9260fTed Kremenek << SourceMgr.getColumnNumber(LogLoc); 157c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner 158c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner SourceLocation PhysLoc = SourceMgr.getPhysicalLoc(Loc); 159c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner if (PhysLoc != LogLoc) { 160bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " <PhysLoc="; 161c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner DumpLocation(PhysLoc); 162bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << ">"; 163c3d8d57b010e2ed15a2a7685d5761db14f5d2252Chris Lattner } 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::DumpMacro(const MacroInfo &MI) const { 167bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "MACRO: "; 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = MI.getNumTokens(); i != e; ++i) { 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DumpToken(MI.getReplacementToken(i)); 170bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " "; 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 172bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\n"; 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Preprocessor::PrintStats() { 176bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << "\n*** Preprocessor Stats:\n"; 177bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << NumDirectives << " directives found:\n"; 178bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumDefined << " #define.\n"; 179bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumUndefined << " #undef.\n"; 180bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " #include/#include_next/#import:\n"; 181bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumEnteredSourceFiles << " source files entered.\n"; 182bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << MaxIncludeStackDepth << " max include stack depth\n"; 183bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumIf << " #if/#ifndef/#ifdef.\n"; 184bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumElse << " #else/#elif.\n"; 185bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumEndif << " #endif.\n"; 186bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << " " << NumPragma << " #pragma.\n"; 187bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << NumSkipped << " #if/#ifndef#ifdef regions skipped\n"; 188bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek 189bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << NumMacroExpanded << "/" << NumFnMacroExpanded << "/" 190bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << NumBuiltinMacroExpanded << " obj/fn/builtin macros expanded, " 191bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << NumFastMacroExpanded << " on the fast path.\n"; 192bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek llvm::cerr << (NumFastTokenPaste+NumTokenPaste) 193bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << " token paste (##) operations performed, " 194bdd30c26bd93a89ae0fe125e9aae8b7c05e55324Ted Kremenek << NumFastTokenPaste << " on the fast path.\n"; 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Token Spelling 1995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getSpelling() - Return the 'spelling' of this token. The spelling of a 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token are the characters used to represent the token in the source file 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// after trigraph expansion and escaped-newline folding. In particular, this 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// wants to get the true, uncanonicalized, spelling of things like digraphs 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// UCNs, etc. 207d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnerstd::string Preprocessor::getSpelling(const Token &Tok) const { 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert((int)Tok.getLength() >= 0 && "Token character range is bogus!"); 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this token contains nothing interesting, return it directly. 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *TokStart = SourceMgr.getCharacterData(Tok.getLocation()); 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!Tok.needsCleaning()) 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return std::string(TokStart, TokStart+Tok.getLength()); 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer std::string Result; 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result.reserve(Tok.getLength()); 2175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, hard case, relex the characters into the string. 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (const char *Ptr = TokStart, *End = TokStart+Tok.getLength(); 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr != End; ) { 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned CharSize; 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Result.push_back(Lexer::getCharAndSizeNoWarn(Ptr, CharSize, Features)); 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr += CharSize; 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Result.size() != unsigned(Tok.getLength()) && 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "NeedsCleaning flag set on something that didn't need cleaning!"); 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Result; 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getSpelling - This method is used to get the spelling of a token into a 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// preallocated buffer, instead of as an std::string. The caller is required 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// to allocate enough space for the token, which is guaranteed to be at least 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Tok.getLength() bytes long. The actual length of the token is returned. 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Note that this method may do two possible things: it may either fill in 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// the buffer specified with characters, or it may *change the input pointer* 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// to point to a constant buffer with the data already in it (avoiding a 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// copy). The caller is not allowed to modify the returned buffer pointer 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// if an internal buffer is returned. 240d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnerunsigned Preprocessor::getSpelling(const Token &Tok, 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *&Buffer) const { 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert((int)Tok.getLength() >= 0 && "Token character range is bogus!"); 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this token is an identifier, just return the string from the identifier 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // table, which is very quick. 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (const IdentifierInfo *II = Tok.getIdentifierInfo()) { 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Buffer = II->getName(); 2480f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner 2490f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner // Return the length of the token. If the token needed cleaning, don't 2500f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner // include the size of the newlines or trigraphs in it. 2510f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner if (!Tok.needsCleaning()) 2520f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner return Tok.getLength(); 2530f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner else 2540f67032078de7b8944eb8dc5fea4fef6f483c385Chris Lattner return strlen(Buffer); 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, compute the start of the token in the input lexer buffer. 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *TokStart = SourceMgr.getCharacterData(Tok.getLocation()); 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this token contains nothing interesting, return it directly. 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!Tok.needsCleaning()) { 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Buffer = TokStart; 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return Tok.getLength(); 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, hard case, relex the characters into the string. 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer char *OutBuf = const_cast<char*>(Buffer); 2675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (const char *Ptr = TokStart, *End = TokStart+Tok.getLength(); 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr != End; ) { 2695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned CharSize; 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer *OutBuf++ = Lexer::getCharAndSizeNoWarn(Ptr, CharSize, Features); 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Ptr += CharSize; 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(unsigned(OutBuf-Buffer) != Tok.getLength() && 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "NeedsCleaning flag set on something that didn't need cleaning!"); 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return OutBuf-Buffer; 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// CreateString - Plop the specified string into a scratch buffer and return a 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// location for it. If specified, the source location provides a source 2825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// location for the token. 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerSourceLocation Preprocessor:: 2845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerCreateString(const char *Buf, unsigned Len, SourceLocation SLoc) { 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SLoc.isValid()) 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ScratchBuf->getToken(Buf, Len, SLoc); 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ScratchBuf->getToken(Buf, Len); 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 29197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner/// AdvanceToTokenCharacter - Given a location that specifies the start of a 29297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner/// token, return a new location that specifies a character within the token. 29397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris LattnerSourceLocation Preprocessor::AdvanceToTokenCharacter(SourceLocation TokStart, 29497ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner unsigned CharNo) { 2959dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // If they request the first char of the token, we're trivially done. If this 2969dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // is a macro expansion, it doesn't make sense to point to a character within 2979dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // the instantiation point (the name). We could point to the source 2989dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // character, but without also pointing to instantiation info, this is 2999dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner // confusing. 3009dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner if (CharNo == 0 || TokStart.isMacroID()) return TokStart; 30197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 30297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // Figure out how many physical characters away the specified logical 30397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // character is. This needs to take into consideration newlines and 30497ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // trigraphs. 3059dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner const char *TokPtr = SourceMgr.getCharacterData(TokStart); 3069dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner unsigned PhysOffset = 0; 30797ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 30897ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // The usual case is that tokens don't contain anything interesting. Skip 30997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // over the uninteresting characters. If a token only consists of simple 31097ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // chars, this method is extremely fast. 31197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner while (CharNo && Lexer::isObviouslySimpleCharacter(*TokPtr)) 3129dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner ++TokPtr, --CharNo, ++PhysOffset; 31397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 31497ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // If we have a character that may be a trigraph or escaped newline, create a 31597ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // lexer to parse it correctly. 31697ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner if (CharNo != 0) { 31797ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // Create a lexer starting at this token position. 31825bdb51276d3bfc180a68688082071505a00ed27Chris Lattner Lexer TheLexer(TokStart, *this, TokPtr); 319d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Token Tok; 32097ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner // Skip over characters the remaining characters. 3219dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner const char *TokStartPtr = TokPtr; 32297ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner for (; CharNo; --CharNo) 32397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner TheLexer.getAndAdvanceChar(TokPtr, Tok); 3249dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner 3259dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner PhysOffset += TokPtr-TokStartPtr; 32697ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner } 3279dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner 3289dc1f530c086d2c16f8cba758b0f59a5bf41323aChris Lattner return TokStart.getFileLocWithOffset(PhysOffset); 32997ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner} 33097ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 33197ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 33253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner//===----------------------------------------------------------------------===// 33353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// Preprocessor Initialization Methods 33453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner//===----------------------------------------------------------------------===// 33553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 33653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// Append a #define line to Buf for Macro. Macro should be of the form XXX, 33753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit 33853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner// "#define XXX Y z W". To get a #define with no value, use "XXX=". 33953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattnerstatic void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro, 34053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner const char *Command = "#define ") { 34153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Command, Command+strlen(Command)); 34253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner if (const char *Equal = strchr(Macro, '=')) { 34353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Turn the = into ' '. 34453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Macro, Equal); 34553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back(' '); 34653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Equal+1, Equal+strlen(Equal)); 34753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner } else { 34853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Push "macroname 1". 34953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.insert(Buf.end(), Macro, Macro+strlen(Macro)); 35053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back(' '); 35153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back('1'); 35253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner } 35353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner Buf.push_back('\n'); 35453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner} 35553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 3562db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner/// PickFP - This is used to pick a value based on the FP semantics of the 3572db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner/// specified FP model. 3582db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattnertemplate <typename T> 3592db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattnerstatic T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal, 3602db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal) { 3612db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner if (Sem == &llvm::APFloat::IEEEsingle) 3622db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return IEEESingleVal; 3632db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner if (Sem == &llvm::APFloat::IEEEdouble) 3642db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return IEEEDoubleVal; 3652db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner if (Sem == &llvm::APFloat::x87DoubleExtended) 3662db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return X87DoubleExtendedVal; 3672db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner assert(Sem == &llvm::APFloat::PPCDoubleDouble); 3682db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner return PPCDoubleDoubleVal; 3692db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner} 3702db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 3712db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattnerstatic void DefineFloatMacros(std::vector<char> &Buf, const char *Prefix, 3722db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner const llvm::fltSemantics *Sem) { 373e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner const char *DenormMin, *Epsilon, *Max, *Min; 374e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DenormMin = PickFP(Sem, "1.40129846e-45F", "4.9406564584124654e-324", 375e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "3.64519953188247460253e-4951L", 376e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "4.94065645841246544176568792868221e-324L"); 377e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int Digits = PickFP(Sem, 6, 15, 18, 31); 378e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner Epsilon = PickFP(Sem, "1.19209290e-7F", "2.2204460492503131e-16", 379e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "1.08420217248550443401e-19L", 380e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "4.94065645841246544176568792868221e-324L"); 381e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int HasInifinity = 1, HasQuietNaN = 1; 382e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int MantissaDigits = PickFP(Sem, 24, 53, 64, 106); 383e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int Min10Exp = PickFP(Sem, -37, -307, -4931, -291); 384e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int Max10Exp = PickFP(Sem, 38, 308, 4932, 308); 385e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int MinExp = PickFP(Sem, -125, -1021, -16381, -968); 386e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024); 387e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner Min = PickFP(Sem, "1.17549435e-38F", "2.2250738585072014e-308", 388e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "3.36210314311209350626e-4932L", 389e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "2.00416836000897277799610805135016e-292L"); 390e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner Max = PickFP(Sem, "3.40282347e+38F", "1.7976931348623157e+308", 391e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "1.18973149535723176502e+4932L", 392e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner "1.79769313486231580793728971405301e+308L"); 3932db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 3942db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner char MacroBuf[60]; 3952db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner sprintf(MacroBuf, "__%s_DENORM_MIN__=%s", Prefix, DenormMin); 3962db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 397e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_DIG__=%d", Prefix, Digits); 398e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 399e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_EPSILON__=%s", Prefix, Epsilon); 400e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 401e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_HAS_INFINITY__=%d", Prefix, HasInifinity); 402e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 403e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_HAS_QUIET_NAN__=%d", Prefix, HasQuietNaN); 404e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 405e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MANT_DIG__=%d", Prefix, MantissaDigits); 406e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 407e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MAX_10_EXP__=%d", Prefix, Max10Exp); 408e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 409e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MAX_EXP__=%d", Prefix, MaxExp); 410e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 411e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MAX__=%s", Prefix, Max); 412e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 413e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MIN_10_EXP__=(%d)", Prefix, Min10Exp); 414e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 415e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MIN_EXP__=(%d)", Prefix, MinExp); 416e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 417e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner sprintf(MacroBuf, "__%s_MIN__=%s", Prefix, Min); 418e9863cab04789cd6d82453c42f6736624e0e739bChris Lattner DefineBuiltinMacro(Buf, MacroBuf); 4192db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner} 4202db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 42153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 42253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattnerstatic void InitializePredefinedMacros(Preprocessor &PP, 42353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner std::vector<char> &Buf) { 42462213d90822848110e5f4125491351697d5a302cChris Lattner // Compiler version introspection macros. 42562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__llvm__=1"); // LLVM Backend 42662213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__clang__=1"); // Clang Frontend 42762213d90822848110e5f4125491351697d5a302cChris Lattner 42862213d90822848110e5f4125491351697d5a302cChris Lattner // Currently claim to be compatible with GCC 4.2.1-5621. 42962213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__APPLE_CC__=5621"); 43062213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUC_MINOR__=2"); 43162213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUC_PATCHLEVEL__=1"); 43262213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUC__=4"); 43362213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GXX_ABI_VERSION=1002"); 43462213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__VERSION__=\"4.2.1 (Apple Computer, Inc. " 43562213d90822848110e5f4125491351697d5a302cChris Lattner "build 5621) (dot 3)\""); 43662213d90822848110e5f4125491351697d5a302cChris Lattner 43762213d90822848110e5f4125491351697d5a302cChris Lattner 43862213d90822848110e5f4125491351697d5a302cChris Lattner // Initialize language-specific preprocessor defines. 43962213d90822848110e5f4125491351697d5a302cChris Lattner 44053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // FIXME: Implement magic like cpp_init_builtins for things like __STDC__ 44153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // and __DATE__ etc. 44253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // These should all be defined in the preprocessor according to the 44353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // current language configuration. 44453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC__=1"); 44553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner //DefineBuiltinMacro(Buf, "__ASSEMBLER__=1"); 44653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner if (PP.getLangOptions().C99 && !PP.getLangOptions().CPlusPlus) 44753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC_VERSION__=199901L"); 44853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner else if (0) // STDC94 ? 44953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC_VERSION__=199409L"); 45053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 45153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__STDC_HOSTED__=1"); 452fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar if (PP.getLangOptions().ObjC1) { 45353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__OBJC__=1"); 454fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar 455fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar if (PP.getLangOptions().getGCMode() == LangOptions::NonGC) { 456fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__weak="); 457fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__strong="); 458fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar } else { 459fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__weak=__attribute__((objc_gc(weak)))"); 460fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__strong=__attribute__((objc_gc(strong)))"); 461fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__OBJC_GC__=1"); 462fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar } 463fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar 464fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar if (PP.getLangOptions().NeXTRuntime) 465fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar DefineBuiltinMacro(Buf, "__NEXT_RUNTIME__=1"); 466fba5cb12adbe95d79855e91db018b863ce48387eDaniel Dunbar } 4679b533164570a67c81ad49f3691f02608530a042eChris Lattner 468eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner // darwin_constant_cfstrings controls this. This is also dependent 469eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner // on other things like the runtime I believe. This is set even for C code. 470eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner DefineBuiltinMacro(Buf, "__CONSTANT_CFSTRINGS__=1"); 471eb52b44caf9afbf4bfaf0e3e6f9426d90492b85bChris Lattner 47273b17cd017f70d0bf7ca2dbb12f09f99081d7fdbSteve Naroff if (PP.getLangOptions().ObjC2) 47373b17cd017f70d0bf7ca2dbb12f09f99081d7fdbSteve Naroff DefineBuiltinMacro(Buf, "OBJC_NEW_PROPERTIES"); 4748ee529b5671295ea38c249df8b9d3766c905cfa7Steve Naroff 475048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner if (PP.getLangOptions().PascalStrings) 476048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner DefineBuiltinMacro(Buf, "__PASCAL_STRINGS__"); 477048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner 47862213d90822848110e5f4125491351697d5a302cChris Lattner if (PP.getLangOptions().Blocks) { 47962213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__block=__attribute__((__blocks__(byref)))"); 48062213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__BLOCKS__=1"); 4812b43ad9588b8c7f0c9fdc1d95f4f972257215fcaChris Lattner } 48262213d90822848110e5f4125491351697d5a302cChris Lattner 48362213d90822848110e5f4125491351697d5a302cChris Lattner if (PP.getLangOptions().CPlusPlus) { 48462213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__DEPRECATED=1"); 48562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__EXCEPTIONS=1"); 48662213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GNUG__=4"); 48762213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__GXX_WEAK__=1"); 48862213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__cplusplus=1"); 48962213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__private_extern__=extern"); 49062213d90822848110e5f4125491351697d5a302cChris Lattner } 49162213d90822848110e5f4125491351697d5a302cChris Lattner 49262213d90822848110e5f4125491351697d5a302cChris Lattner // Filter out some microsoft extensions when trying to parse in ms-compat 49362213d90822848110e5f4125491351697d5a302cChris Lattner // mode. 49462213d90822848110e5f4125491351697d5a302cChris Lattner if (PP.getLangOptions().Microsoft) { 49562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__stdcall="); 49662213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__cdecl="); 49762213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "_cdecl="); 49862213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__ptr64="); 49962213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__w64="); 50062213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__forceinline="); 50162213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__int8=char"); 50262213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__int16=short"); 50362213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__int32=int"); 50462213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__int64=long long"); 50562213d90822848110e5f4125491351697d5a302cChris Lattner DefineBuiltinMacro(Buf, "__declspec(X)="); 50662213d90822848110e5f4125491351697d5a302cChris Lattner } 50762213d90822848110e5f4125491351697d5a302cChris Lattner 50862213d90822848110e5f4125491351697d5a302cChris Lattner 50962213d90822848110e5f4125491351697d5a302cChris Lattner // Initialize target-specific preprocessor defines. 5109b533164570a67c81ad49f3691f02608530a042eChris Lattner const TargetInfo &TI = PP.getTargetInfo(); 5119b533164570a67c81ad49f3691f02608530a042eChris Lattner 5129b533164570a67c81ad49f3691f02608530a042eChris Lattner // Define type sizing macros based on the target properties. 5139b533164570a67c81ad49f3691f02608530a042eChris Lattner assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); 5149b533164570a67c81ad49f3691f02608530a042eChris Lattner DefineBuiltinMacro(Buf, "__CHAR_BIT__=8"); 5159b533164570a67c81ad49f3691f02608530a042eChris Lattner DefineBuiltinMacro(Buf, "__SCHAR_MAX__=127"); 5162db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner 5172db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner assert(TI.getWCharWidth() == 32 && "Only support 32-bit wchar so far"); 5182db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineBuiltinMacro(Buf, "__WCHAR_MAX__=2147483647"); 5192db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineBuiltinMacro(Buf, "__WCHAR_TYPE__=int"); 5202db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineBuiltinMacro(Buf, "__WINT_TYPE__=int"); 5219b533164570a67c81ad49f3691f02608530a042eChris Lattner 5229b533164570a67c81ad49f3691f02608530a042eChris Lattner assert(TI.getShortWidth() == 16 && "Only support 16-bit short so far"); 5239b533164570a67c81ad49f3691f02608530a042eChris Lattner DefineBuiltinMacro(Buf, "__SHRT_MAX__=32767"); 5249b533164570a67c81ad49f3691f02608530a042eChris Lattner 5250e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner if (TI.getIntWidth() == 32) 5260e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__INT_MAX__=2147483647"); 5270e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner else if (TI.getIntWidth() == 16) 5280e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__INT_MAX__=32767"); 5290e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner else 5300e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner assert(0 && "Unknown integer size"); 53131fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta 53231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta if (TI.getLongLongWidth() == 64) 53331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__LONG_LONG_MAX__=9223372036854775807LL"); 53431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getLongLongWidth() == 32) 53531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__LONG_LONG_MAX__=2147483647L"); 5369b533164570a67c81ad49f3691f02608530a042eChris Lattner 5370e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner if (TI.getLongWidth() == 32) 5380e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__LONG_MAX__=2147483647L"); 5390e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner else if (TI.getLongWidth() == 64) 5400e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__LONG_MAX__=9223372036854775807L"); 5410e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner else if (TI.getLongWidth() == 16) 5420e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__LONG_MAX__=32767L"); 5430e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner else 5440e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner assert(0 && "Unknown long size"); 54531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta char MacroBuf[60]; 54631fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta sprintf(MacroBuf, "__INTMAX_MAX__=%lld", 54731fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta (TI.getIntMaxType() == TargetInfo::UnsignedLongLong? 54873608a89a64401985990f8046f75cdd82309e92fSanjiv Gupta (1LL << (TI.getLongLongWidth() - 1)) : 54973608a89a64401985990f8046f75cdd82309e92fSanjiv Gupta ((1LL << (TI.getLongLongWidth() - 2)) - 1))); 55031fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, MacroBuf); 5510e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner 55231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta if (TI.getIntMaxType() == TargetInfo::UnsignedLongLong) 55331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=unsigned long long int"); 55431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getIntMaxType() == TargetInfo::SignedLongLong) 55531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=long long int"); 55631fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getIntMaxType() == TargetInfo::UnsignedLong) 55731fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=unsigned long int"); 55831fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getIntMaxType() == TargetInfo::SignedLong) 5590e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=long int"); 56031fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getIntMaxType() == TargetInfo::UnsignedInt) 56131fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=unsigned int"); 56231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else 56331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=int"); 56431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta 56531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta if (TI.getUIntMaxType() == TargetInfo::UnsignedLongLong) 56631fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=unsigned long long int"); 56731fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getUIntMaxType() == TargetInfo::SignedLongLong) 56831fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=long long int"); 56931fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getUIntMaxType() == TargetInfo::UnsignedLong) 57031fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=unsigned long int"); 57131fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getUIntMaxType() == TargetInfo::SignedLong) 57231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=long int"); 57331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getUIntMaxType() == TargetInfo::UnsignedInt) 57431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=unsigned int"); 57531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else 57631fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=int"); 57731fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta 57831fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta if (TI.getPtrDiffType(0) == TargetInfo::UnsignedLongLong) 57931fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=unsigned long long int"); 58031fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getPtrDiffType(0) == TargetInfo::SignedLongLong) 58131fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=long long int"); 58231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getPtrDiffType(0) == TargetInfo::UnsignedLong) 58331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=unsigned long int"); 58431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getPtrDiffType(0) == TargetInfo::SignedLong) 5850e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=long int"); 58631fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getPtrDiffType(0) == TargetInfo::UnsignedInt) 58731fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=unsigned int"); 58831fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else 5890e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=int"); 5900e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner 59131fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta if (TI.getSizeType() == TargetInfo::UnsignedLongLong) 59231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned long long int"); 59331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getSizeType() == TargetInfo::SignedLongLong) 59431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=long long int"); 59531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getSizeType() == TargetInfo::UnsignedLong) 59631fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned long int"); 59731fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getSizeType() == TargetInfo::SignedLong) 59831fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=long int"); 59931fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getSizeType() == TargetInfo::UnsignedInt) 60031fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned int"); 60131fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else if (TI.getSizeType() == TargetInfo::SignedInt) 60231fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=int"); 60331fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta else 60431fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned short"); 60531fc07df7f0fc89ebf83ca05a20b29de45a7598dSanjiv Gupta 6062db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineFloatMacros(Buf, "FLT", &TI.getFloatFormat()); 6072db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineFloatMacros(Buf, "DBL", &TI.getDoubleFormat()); 6082db78dd977fbba8fdf24cf8a4593436c031cfbcbChris Lattner DefineFloatMacros(Buf, "LDBL", &TI.getLongDoubleFormat()); 6090e5d4ef3155651af17a90fdc07d9f80b33935c0cChris Lattner 610048dd943fc22a3ee60180d6992d744106c4c100aChris Lattner 611d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner // Add __builtin_va_list typedef. 612d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner { 6139b533164570a67c81ad49f3691f02608530a042eChris Lattner const char *VAList = TI.getVAListDeclaration(); 614d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner Buf.insert(Buf.end(), VAList, VAList+strlen(VAList)); 615d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner Buf.push_back('\n'); 616d19144b244f86227fcc2b0da794929fe83968dd5Chris Lattner } 61753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 6189b533164570a67c81ad49f3691f02608530a042eChris Lattner if (const char *Prefix = TI.getUserLabelPrefix()) { 61912f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner sprintf(MacroBuf, "__USER_LABEL_PREFIX__=%s", Prefix); 62012f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 6213fdf4678935b27c3d3fd4eb10bf9f5ab98dc0d99Chris Lattner } 6223fdf4678935b27c3d3fd4eb10bf9f5ab98dc0d99Chris Lattner 6239b533164570a67c81ad49f3691f02608530a042eChris Lattner // Build configuration options. FIXME: these should be controlled by 6249b533164570a67c81ad49f3691f02608530a042eChris Lattner // command line options or something. 62553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__DYNAMIC__=1"); 62653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__FINITE_MATH_ONLY__=0"); 62753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__NO_INLINE__=1"); 62853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner DefineBuiltinMacro(Buf, "__PIC__=1"); 6299b533164570a67c81ad49f3691f02608530a042eChris Lattner 63012f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner // Macros to control C99 numerics and <float.h> 63112f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, "__FLT_EVAL_METHOD__=0"); 63212f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, "__FLT_RADIX__=2"); 63312f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner sprintf(MacroBuf, "__DECIMAL_DIG__=%d", 63412f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33)); 63512f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner DefineBuiltinMacro(Buf, MacroBuf); 63612f09260294175dc097b843d3d06d048b9cd64a3Chris Lattner 6379b533164570a67c81ad49f3691f02608530a042eChris Lattner // Get other target #defines. 6389b533164570a67c81ad49f3691f02608530a042eChris Lattner TI.getTargetDefines(Buf); 63953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 64053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // FIXME: Should emit a #line directive here. 64153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner} 64253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 64353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 64453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner/// EnterMainSourceFile - Enter the specified FileID as the main source file, 6456b61602bc7695d40b3c4d09032be1ca1dd0b3c31Nate Begeman/// which implicitly adds the builtin defines etc. 64695041a2029a069386ee67439f6d0fb524a9d184fTed Kremenekvoid Preprocessor::EnterMainSourceFile() { 64795041a2029a069386ee67439f6d0fb524a9d184fTed Kremenek 64895041a2029a069386ee67439f6d0fb524a9d184fTed Kremenek unsigned MainFileID = SourceMgr.getMainFileID(); 64995041a2029a069386ee67439f6d0fb524a9d184fTed Kremenek 65053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Enter the main file source buffer. 65153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner EnterSourceFile(MainFileID, 0); 65253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 653b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner // Tell the header info that the main file was entered. If the file is later 654b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner // #imported, it won't be re-entered. 655b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner if (const FileEntry *FE = 656b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner SourceMgr.getFileEntryForLoc(SourceLocation::getFileLoc(MainFileID, 0))) 657b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner HeaderInfo.IncrementIncludeCount(FE); 658b283298f03d2b512204d14ca687f9de263eeff0fChris Lattner 65953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner std::vector<char> PrologFile; 66053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner PrologFile.reserve(4080); 66153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 66253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Install things like __POWERPC__, __GNUC__, etc into the macro table. 66353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner InitializePredefinedMacros(*this, PrologFile); 66453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 66553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Add on the predefines from the driver. 666aa39197431a0a0b1326ecf6b3be6a11f6e2f8503Chris Lattner PrologFile.insert(PrologFile.end(), Predefines.begin(), Predefines.end()); 66753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 66853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Memory buffer must end with a null byte! 66953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner PrologFile.push_back(0); 67053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 67153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Now that we have emitted the predefined macros, #includes, etc into 67253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // PrologFile, preprocess it to populate the initial preprocessor state. 67353b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner llvm::MemoryBuffer *SB = 67453b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner llvm::MemoryBuffer::getMemBufferCopy(&PrologFile.front(),&PrologFile.back(), 67553b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner "<predefines>"); 67653b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner assert(SB && "Cannot fail to create predefined source buffer"); 67753b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner unsigned FileID = SourceMgr.createFileIDForMemBuffer(SB); 67853b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner assert(FileID && "Could not create FileID for predefines?"); 67953b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner 68053b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner // Start parsing the predefines. 68153b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner EnterSourceFile(FileID, 0); 68253b0dabbe52219a8057659b90539837394ef0fa1Chris Lattner} 68397ba77cf09bf7b83b679165ce67ad7d49ffd568cChris Lattner 6845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 6865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Lexer Event Handling. 6875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 6885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// LookUpIdentifierInfo - Given a tok::identifier token, look up the 6905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// identifier information for the token and install it into the token. 691d217773f106856a11879ec79dc468efefaf2ee75Chris LattnerIdentifierInfo *Preprocessor::LookUpIdentifierInfo(Token &Identifier, 6925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *BufPtr) { 69322f6bbcafa8871f4f20c4402d9cbc5c024fee99aChris Lattner assert(Identifier.is(tok::identifier) && "Not an identifier!"); 6945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Identifier.getIdentifierInfo() == 0 && "Identinfo already exists!"); 6955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look up this token, see if it is a macro, or if it is a language keyword. 6975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo *II; 6985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BufPtr && !Identifier.needsCleaning()) { 6995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // No cleaning needed, just use the characters from the lexed buffer. 7005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II = getIdentifierInfo(BufPtr, BufPtr+Identifier.getLength()); 7015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 7025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Cleaning needed, alloca a buffer, clean into it, then use the buffer. 703c35717a1b34269fc5d78226b1624f53e1c073ed6Chris Lattner llvm::SmallVector<char, 64> IdentifierBuffer; 704c35717a1b34269fc5d78226b1624f53e1c073ed6Chris Lattner IdentifierBuffer.resize(Identifier.getLength()); 705c35717a1b34269fc5d78226b1624f53e1c073ed6Chris Lattner const char *TmpBuf = &IdentifierBuffer[0]; 7065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer unsigned Size = getSpelling(Identifier, TmpBuf); 7075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer II = getIdentifierInfo(TmpBuf, TmpBuf+Size); 7085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Identifier.setIdentifierInfo(II); 7105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return II; 7115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// HandleIdentifier - This callback is invoked when the lexer reads an 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// identifier. This callback looks up the identifier in the map and/or 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// potentially macro expands it or turns it into a named token (like 'for'). 717d217773f106856a11879ec79dc468efefaf2ee75Chris Lattnervoid Preprocessor::HandleIdentifier(Token &Identifier) { 7185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(Identifier.getIdentifierInfo() && 7195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle identifiers without identifier info!"); 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer IdentifierInfo &II = *Identifier.getIdentifierInfo(); 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this identifier was poisoned, and if it was not produced from a macro 7245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expansion, emit an error. 7251a531570d294ffc300cce1bc5e73de847a370f4fTed Kremenek if (II.isPoisoned() && CurPPLexer) { 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (&II != Ident__VA_ARGS__) // We warn about __VA_ARGS__ with poisoning. 7275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Identifier, diag::err_pp_used_poisoned_id); 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Identifier, diag::ext_pp_bad_vaargs_use); 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is a macro to be expanded, do it. 733cc1a875f94630e58d24a55577ffbf0e89b7da8c7Chris Lattner if (MacroInfo *MI = getMacroInfo(&II)) { 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!DisableMacroExpansion && !Identifier.isExpandDisabled()) { 7355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (MI->isEnabled()) { 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!HandleMacroExpandedIdentifier(Identifier, MI)) 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return; 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.10.3.4p2 says that a disabled macro may never again be 7405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // expanded, even if it's in a context where it could be expanded in the 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // future. 742d217773f106856a11879ec79dc468efefaf2ee75Chris Lattner Identifier.setFlag(Token::DisableExpand); 7435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C++ 2.11p2: If this is an alternative representation of a C++ operator, 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // then we act as if it is the actual operator and not the textual 7495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // representation of it. 7505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (II.isCPlusPlusOperatorKeyword()) 7515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Identifier.setIdentifierInfo(0); 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Change the kind of this identifier to the appropriate token kind, e.g. 7545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // turning "for" into a keyword. 7555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Identifier.setKind(II.getTokenID()); 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is an extension token, diagnose its use. 758b4eaf9cf5f79c86a3f7564f4dfdea57f165ca45cSteve Naroff // We avoid diagnosing tokens that originate from macro definitions. 759b4eaf9cf5f79c86a3f7564f4dfdea57f165ca45cSteve Naroff if (II.isExtensionToken() && Features.C99 && !DisableMacroExpansion) 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Identifier, diag::ext_token_used); 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 762