зеркало из https://github.com/microsoft/clang-1.git
569 строки
23 KiB
C++
569 строки
23 KiB
C++
//===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the clang::InitializePreprocessor function.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/Version.h"
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#include "clang/Frontend/Utils.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/FrontendOptions.h"
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#include "clang/Frontend/PreprocessorOptions.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/SourceManager.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/System/Path.h"
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using namespace clang;
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// Append a #define line to Buf for Macro. Macro should be of the form XXX,
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// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
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// "#define XXX Y z W". To get a #define with no value, use "XXX=".
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static void DefineBuiltinMacro(MacroBuilder &Builder, llvm::StringRef Macro,
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Diagnostic &Diags) {
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std::pair<llvm::StringRef, llvm::StringRef> MacroPair = Macro.split('=');
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llvm::StringRef MacroName = MacroPair.first;
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llvm::StringRef MacroBody = MacroPair.second;
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if (MacroName.size() != Macro.size()) {
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// Per GCC -D semantics, the macro ends at \n if it exists.
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llvm::StringRef::size_type End = MacroBody.find_first_of("\n\r");
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if (End != llvm::StringRef::npos)
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Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
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<< MacroName;
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Builder.defineMacro(MacroName, MacroBody.substr(0, End));
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} else {
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// Push "macroname 1".
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Builder.defineMacro(Macro);
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}
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}
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std::string clang::NormalizeDashIncludePath(llvm::StringRef File) {
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// Implicit include paths should be resolved relative to the current
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// working directory first, and then use the regular header search
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// mechanism. The proper way to handle this is to have the
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// predefines buffer located at the current working directory, but
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// it has not file entry. For now, workaround this by using an
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// absolute path if we find the file here, and otherwise letting
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// header search handle it.
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llvm::sys::Path Path(File);
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Path.makeAbsolute();
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if (!Path.exists())
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Path = File;
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return Lexer::Stringify(Path.str());
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}
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/// AddImplicitInclude - Add an implicit #include of the specified file to the
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/// predefines buffer.
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static void AddImplicitInclude(MacroBuilder &Builder, llvm::StringRef File) {
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Builder.append("#include \"" +
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llvm::Twine(NormalizeDashIncludePath(File)) + "\"");
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}
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static void AddImplicitIncludeMacros(MacroBuilder &Builder,
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llvm::StringRef File) {
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Builder.append("#__include_macros \"" +
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llvm::Twine(NormalizeDashIncludePath(File)) + "\"");
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// Marker token to stop the __include_macros fetch loop.
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Builder.append("##"); // ##?
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}
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/// AddImplicitIncludePTH - Add an implicit #include using the original file
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/// used to generate a PTH cache.
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static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
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llvm::StringRef ImplicitIncludePTH) {
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PTHManager *P = PP.getPTHManager();
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assert(P && "No PTHManager.");
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const char *OriginalFile = P->getOriginalSourceFile();
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if (!OriginalFile) {
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PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)
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<< ImplicitIncludePTH;
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return;
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}
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AddImplicitInclude(Builder, OriginalFile);
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}
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/// PickFP - This is used to pick a value based on the FP semantics of the
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/// specified FP model.
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template <typename T>
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static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal,
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T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
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T IEEEQuadVal) {
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
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return IEEESingleVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
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return IEEEDoubleVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
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return X87DoubleExtendedVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
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return PPCDoubleDoubleVal;
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assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
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return IEEEQuadVal;
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}
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static void DefineFloatMacros(MacroBuilder &Builder, llvm::StringRef Prefix,
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const llvm::fltSemantics *Sem) {
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const char *DenormMin, *Epsilon, *Max, *Min;
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DenormMin = PickFP(Sem, "1.40129846e-45F", "4.9406564584124654e-324",
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"3.64519953188247460253e-4951L",
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"4.94065645841246544176568792868221e-324L",
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"6.47517511943802511092443895822764655e-4966L");
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int Digits = PickFP(Sem, 6, 15, 18, 31, 33);
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Epsilon = PickFP(Sem, "1.19209290e-7F", "2.2204460492503131e-16",
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"1.08420217248550443401e-19L",
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"4.94065645841246544176568792868221e-324L",
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"1.92592994438723585305597794258492732e-34L");
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int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113);
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int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931);
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int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932);
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int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381);
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int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384);
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Min = PickFP(Sem, "1.17549435e-38F", "2.2250738585072014e-308",
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"3.36210314311209350626e-4932L",
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"2.00416836000897277799610805135016e-292L",
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"3.36210314311209350626267781732175260e-4932L");
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Max = PickFP(Sem, "3.40282347e+38F", "1.7976931348623157e+308",
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"1.18973149535723176502e+4932L",
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"1.79769313486231580793728971405301e+308L",
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"1.18973149535723176508575932662800702e+4932L");
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llvm::SmallString<32> DefPrefix;
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DefPrefix = "__";
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DefPrefix += Prefix;
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DefPrefix += "_";
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Builder.defineMacro(DefPrefix + "DENORM_MIN__", DenormMin);
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Builder.defineMacro(DefPrefix + "HAS_DENORM__");
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Builder.defineMacro(DefPrefix + "DIG__", llvm::Twine(Digits));
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Builder.defineMacro(DefPrefix + "EPSILON__", llvm::Twine(Epsilon));
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Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
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Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
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Builder.defineMacro(DefPrefix + "MANT_DIG__", llvm::Twine(MantissaDigits));
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Builder.defineMacro(DefPrefix + "MAX_10_EXP__", llvm::Twine(Max10Exp));
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Builder.defineMacro(DefPrefix + "MAX_EXP__", llvm::Twine(MaxExp));
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Builder.defineMacro(DefPrefix + "MAX__", llvm::Twine(Max));
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Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+llvm::Twine(Min10Exp)+")");
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Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+llvm::Twine(MinExp)+")");
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Builder.defineMacro(DefPrefix + "MIN__", llvm::Twine(Min));
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}
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/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
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/// named MacroName with the max value for a type with width 'TypeWidth' a
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/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
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static void DefineTypeSize(llvm::StringRef MacroName, unsigned TypeWidth,
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llvm::StringRef ValSuffix, bool isSigned,
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MacroBuilder& Builder) {
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long long MaxVal;
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if (isSigned)
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MaxVal = (1LL << (TypeWidth - 1)) - 1;
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else
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MaxVal = ~0LL >> (64-TypeWidth);
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Builder.defineMacro(MacroName, llvm::Twine(MaxVal) + ValSuffix);
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}
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/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
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/// the width, suffix, and signedness of the given type
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static void DefineTypeSize(llvm::StringRef MacroName, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
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TI.isTypeSigned(Ty), Builder);
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}
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static void DefineType(const llvm::Twine &MacroName, TargetInfo::IntType Ty,
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MacroBuilder &Builder) {
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Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
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}
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static void DefineTypeWidth(llvm::StringRef MacroName, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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Builder.defineMacro(MacroName, llvm::Twine(TI.getTypeWidth(Ty)));
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}
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static void DefineExactWidthIntType(TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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int TypeWidth = TI.getTypeWidth(Ty);
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DefineType("__INT" + llvm::Twine(TypeWidth) + "_TYPE__", Ty, Builder);
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llvm::StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty));
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if (!ConstSuffix.empty())
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Builder.defineMacro("__INT" + llvm::Twine(TypeWidth) + "_C_SUFFIX__",
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ConstSuffix);
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}
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static void InitializePredefinedMacros(const TargetInfo &TI,
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const LangOptions &LangOpts,
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const FrontendOptions &FEOpts,
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MacroBuilder &Builder) {
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// Compiler version introspection macros.
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Builder.defineMacro("__llvm__"); // LLVM Backend
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Builder.defineMacro("__clang__"); // Clang Frontend
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#define TOSTR2(X) #X
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#define TOSTR(X) TOSTR2(X)
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Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
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Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
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#ifdef CLANG_VERSION_PATCHLEVEL
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Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
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#else
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Builder.defineMacro("__clang_patchlevel__", "0");
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#endif
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Builder.defineMacro("__clang_version__",
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"\"" CLANG_VERSION_STRING " ("
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+ getClangFullRepositoryVersion() + ")\"");
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#undef TOSTR
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#undef TOSTR2
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// Currently claim to be compatible with GCC 4.2.1-5621.
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Builder.defineMacro("__GNUC_MINOR__", "2");
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Builder.defineMacro("__GNUC_PATCHLEVEL__", "1");
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Builder.defineMacro("__GNUC__", "4");
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Builder.defineMacro("__GXX_ABI_VERSION", "1002");
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Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible Clang Compiler\"");
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// Initialize language-specific preprocessor defines.
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// These should all be defined in the preprocessor according to the
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// current language configuration.
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if (!LangOpts.Microsoft)
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Builder.defineMacro("__STDC__");
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if (LangOpts.AsmPreprocessor)
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Builder.defineMacro("__ASSEMBLER__");
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if (!LangOpts.CPlusPlus) {
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if (LangOpts.C99)
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Builder.defineMacro("__STDC_VERSION__", "199901L");
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else if (!LangOpts.GNUMode && LangOpts.Digraphs)
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Builder.defineMacro("__STDC_VERSION__", "199409L");
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}
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// Standard conforming mode?
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if (!LangOpts.GNUMode)
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Builder.defineMacro("__STRICT_ANSI__");
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if (LangOpts.CPlusPlus0x)
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Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
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if (LangOpts.Freestanding)
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Builder.defineMacro("__STDC_HOSTED__", "0");
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else
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Builder.defineMacro("__STDC_HOSTED__");
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if (LangOpts.ObjC1) {
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Builder.defineMacro("__OBJC__");
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if (LangOpts.ObjCNonFragileABI) {
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Builder.defineMacro("__OBJC2__");
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Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
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}
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if (LangOpts.getGCMode() != LangOptions::NonGC)
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Builder.defineMacro("__OBJC_GC__");
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if (LangOpts.NeXTRuntime)
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Builder.defineMacro("__NEXT_RUNTIME__");
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}
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// darwin_constant_cfstrings controls this. This is also dependent
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// on other things like the runtime I believe. This is set even for C code.
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Builder.defineMacro("__CONSTANT_CFSTRINGS__");
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if (LangOpts.ObjC2)
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Builder.defineMacro("OBJC_NEW_PROPERTIES");
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if (LangOpts.PascalStrings)
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Builder.defineMacro("__PASCAL_STRINGS__");
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if (LangOpts.Blocks) {
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Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
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Builder.defineMacro("__BLOCKS__");
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}
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if (LangOpts.Exceptions)
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Builder.defineMacro("__EXCEPTIONS");
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if (LangOpts.SjLjExceptions)
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Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
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if (LangOpts.CPlusPlus) {
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Builder.defineMacro("__DEPRECATED");
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Builder.defineMacro("__GNUG__", "4");
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Builder.defineMacro("__GXX_WEAK__");
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if (LangOpts.GNUMode)
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Builder.defineMacro("__cplusplus");
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else
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// C++ [cpp.predefined]p1:
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// The name_ _cplusplusis defined to the value199711Lwhen compiling a
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// C++ translation unit.
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Builder.defineMacro("__cplusplus", "199711L");
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Builder.defineMacro("__private_extern__", "extern");
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}
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if (LangOpts.Microsoft) {
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// Filter out some microsoft extensions when trying to parse in ms-compat
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// mode.
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Builder.defineMacro("__int8", "__INT8_TYPE__");
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Builder.defineMacro("__int16", "__INT16_TYPE__");
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Builder.defineMacro("__int32", "__INT32_TYPE__");
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Builder.defineMacro("__int64", "__INT64_TYPE__");
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// Both __PRETTY_FUNCTION__ and __FUNCTION__ are GCC extensions, however
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// VC++ appears to only like __FUNCTION__.
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Builder.defineMacro("__PRETTY_FUNCTION__", "__FUNCTION__");
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// Work around some issues with Visual C++ headerws.
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if (LangOpts.CPlusPlus) {
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// Since we define wchar_t in C++ mode.
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Builder.defineMacro("_WCHAR_T_DEFINED");
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Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
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// FIXME: This should be temporary until we have a __pragma
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// solution, to avoid some errors flagged in VC++ headers.
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Builder.defineMacro("_CRT_SECURE_CPP_OVERLOAD_SECURE_NAMES", "0");
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}
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}
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if (LangOpts.Optimize)
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Builder.defineMacro("__OPTIMIZE__");
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if (LangOpts.OptimizeSize)
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Builder.defineMacro("__OPTIMIZE_SIZE__");
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// Initialize target-specific preprocessor defines.
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// Define type sizing macros based on the target properties.
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assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
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Builder.defineMacro("__CHAR_BIT__", "8");
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DefineTypeSize("__SCHAR_MAX__", TI.getCharWidth(), "", true, Builder);
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DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
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DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
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DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
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DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
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DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
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DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
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DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
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DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
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DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
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DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
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DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
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DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
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DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
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DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
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DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
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DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
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DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
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DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
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DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
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DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
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DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat());
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DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat());
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DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat());
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// Define a __POINTER_WIDTH__ macro for stdint.h.
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Builder.defineMacro("__POINTER_WIDTH__",
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llvm::Twine((int)TI.getPointerWidth(0)));
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if (!LangOpts.CharIsSigned)
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Builder.defineMacro("__CHAR_UNSIGNED__");
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// Define exact-width integer types for stdint.h
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Builder.defineMacro("__INT" + llvm::Twine(TI.getCharWidth()) + "_TYPE__",
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"char");
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if (TI.getShortWidth() > TI.getCharWidth())
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DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
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if (TI.getIntWidth() > TI.getShortWidth())
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DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder);
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if (TI.getLongWidth() > TI.getIntWidth())
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DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder);
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if (TI.getLongLongWidth() > TI.getLongWidth())
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DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
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// Add __builtin_va_list typedef.
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Builder.append(TI.getVAListDeclaration());
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if (const char *Prefix = TI.getUserLabelPrefix())
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Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
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// Build configuration options. FIXME: these should be controlled by
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// command line options or something.
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Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
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if (LangOpts.GNUInline)
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Builder.defineMacro("__GNUC_GNU_INLINE__");
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else
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Builder.defineMacro("__GNUC_STDC_INLINE__");
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if (LangOpts.NoInline)
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Builder.defineMacro("__NO_INLINE__");
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if (unsigned PICLevel = LangOpts.PICLevel) {
|
|
Builder.defineMacro("__PIC__", llvm::Twine(PICLevel));
|
|
Builder.defineMacro("__pic__", llvm::Twine(PICLevel));
|
|
}
|
|
|
|
// Macros to control C99 numerics and <float.h>
|
|
Builder.defineMacro("__FLT_EVAL_METHOD__", "0");
|
|
Builder.defineMacro("__FLT_RADIX__", "2");
|
|
int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36);
|
|
Builder.defineMacro("__DECIMAL_DIG__", llvm::Twine(Dig));
|
|
|
|
if (LangOpts.getStackProtectorMode() == LangOptions::SSPOn)
|
|
Builder.defineMacro("__SSP__");
|
|
else if (LangOpts.getStackProtectorMode() == LangOptions::SSPReq)
|
|
Builder.defineMacro("__SSP_ALL__", "2");
|
|
|
|
if (FEOpts.ProgramAction == frontend::RewriteObjC)
|
|
Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
|
|
// Get other target #defines.
|
|
TI.getTargetDefines(LangOpts, Builder);
|
|
}
|
|
|
|
// Initialize the remapping of files to alternative contents, e.g.,
|
|
// those specified through other files.
|
|
static void InitializeFileRemapping(Diagnostic &Diags,
|
|
SourceManager &SourceMgr,
|
|
FileManager &FileMgr,
|
|
const PreprocessorOptions &InitOpts) {
|
|
// Remap files in the source manager (with buffers).
|
|
for (PreprocessorOptions::remapped_file_buffer_iterator
|
|
Remap = InitOpts.remapped_file_buffer_begin(),
|
|
RemapEnd = InitOpts.remapped_file_buffer_end();
|
|
Remap != RemapEnd;
|
|
++Remap) {
|
|
// Create the file entry for the file that we're mapping from.
|
|
const FileEntry *FromFile = FileMgr.getVirtualFile(Remap->first,
|
|
Remap->second->getBufferSize(),
|
|
0);
|
|
if (!FromFile) {
|
|
Diags.Report(diag::err_fe_remap_missing_from_file)
|
|
<< Remap->first;
|
|
delete Remap->second;
|
|
continue;
|
|
}
|
|
|
|
// Override the contents of the "from" file with the contents of
|
|
// the "to" file.
|
|
SourceMgr.overrideFileContents(FromFile, Remap->second);
|
|
}
|
|
|
|
// Remap files in the source manager (with other files).
|
|
for (PreprocessorOptions::remapped_file_iterator
|
|
Remap = InitOpts.remapped_file_begin(),
|
|
RemapEnd = InitOpts.remapped_file_end();
|
|
Remap != RemapEnd;
|
|
++Remap) {
|
|
// Find the file that we're mapping to.
|
|
const FileEntry *ToFile = FileMgr.getFile(Remap->second);
|
|
if (!ToFile) {
|
|
Diags.Report(diag::err_fe_remap_missing_to_file)
|
|
<< Remap->first << Remap->second;
|
|
continue;
|
|
}
|
|
|
|
// Create the file entry for the file that we're mapping from.
|
|
const FileEntry *FromFile = FileMgr.getVirtualFile(Remap->first,
|
|
ToFile->getSize(),
|
|
0);
|
|
if (!FromFile) {
|
|
Diags.Report(diag::err_fe_remap_missing_from_file)
|
|
<< Remap->first;
|
|
continue;
|
|
}
|
|
|
|
// Load the contents of the file we're mapping to.
|
|
std::string ErrorStr;
|
|
const llvm::MemoryBuffer *Buffer
|
|
= llvm::MemoryBuffer::getFile(ToFile->getName(), &ErrorStr);
|
|
if (!Buffer) {
|
|
Diags.Report(diag::err_fe_error_opening)
|
|
<< Remap->second << ErrorStr;
|
|
continue;
|
|
}
|
|
|
|
// Override the contents of the "from" file with the contents of
|
|
// the "to" file.
|
|
SourceMgr.overrideFileContents(FromFile, Buffer);
|
|
}
|
|
}
|
|
|
|
/// InitializePreprocessor - Initialize the preprocessor getting it and the
|
|
/// environment ready to process a single file. This returns true on error.
|
|
///
|
|
void clang::InitializePreprocessor(Preprocessor &PP,
|
|
const PreprocessorOptions &InitOpts,
|
|
const HeaderSearchOptions &HSOpts,
|
|
const FrontendOptions &FEOpts) {
|
|
std::string PredefineBuffer;
|
|
PredefineBuffer.reserve(4080);
|
|
llvm::raw_string_ostream Predefines(PredefineBuffer);
|
|
MacroBuilder Builder(Predefines);
|
|
|
|
InitializeFileRemapping(PP.getDiagnostics(), PP.getSourceManager(),
|
|
PP.getFileManager(), InitOpts);
|
|
|
|
// Emit line markers for various builtin sections of the file. We don't do
|
|
// this in asm preprocessor mode, because "# 4" is not a line marker directive
|
|
// in this mode.
|
|
if (!PP.getLangOptions().AsmPreprocessor)
|
|
Builder.append("# 1 \"<built-in>\" 3");
|
|
|
|
// Install things like __POWERPC__, __GNUC__, etc into the macro table.
|
|
if (InitOpts.UsePredefines)
|
|
InitializePredefinedMacros(PP.getTargetInfo(), PP.getLangOptions(),
|
|
FEOpts, Builder);
|
|
|
|
// Add on the predefines from the driver. Wrap in a #line directive to report
|
|
// that they come from the command line.
|
|
if (!PP.getLangOptions().AsmPreprocessor)
|
|
Builder.append("# 1 \"<command line>\" 1");
|
|
|
|
// Process #define's and #undef's in the order they are given.
|
|
for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
|
|
if (InitOpts.Macros[i].second) // isUndef
|
|
Builder.undefineMacro(InitOpts.Macros[i].first);
|
|
else
|
|
DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
|
|
PP.getDiagnostics());
|
|
}
|
|
|
|
// If -imacros are specified, include them now. These are processed before
|
|
// any -include directives.
|
|
for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
|
|
AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
|
|
|
|
// Process -include directives.
|
|
for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
|
|
const std::string &Path = InitOpts.Includes[i];
|
|
if (Path == InitOpts.ImplicitPTHInclude)
|
|
AddImplicitIncludePTH(Builder, PP, Path);
|
|
else
|
|
AddImplicitInclude(Builder, Path);
|
|
}
|
|
|
|
// Exit the command line and go back to <built-in> (2 is LC_LEAVE).
|
|
if (!PP.getLangOptions().AsmPreprocessor)
|
|
Builder.append("# 1 \"<built-in>\" 2");
|
|
|
|
// Copy PredefinedBuffer into the Preprocessor.
|
|
PP.setPredefines(Predefines.str());
|
|
|
|
// Initialize the header search object.
|
|
ApplyHeaderSearchOptions(PP.getHeaderSearchInfo(), HSOpts,
|
|
PP.getLangOptions(),
|
|
PP.getTargetInfo().getTriple());
|
|
}
|