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Move MacroBuilder into Frontend/Utils.h and clean it up a bit.

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llvm-svn: 93057
This commit is contained in:
Benjamin Kramer
2010-01-09 17:43:21 +00:00
parent 62f05b262b
commit 3f6323dea5
2 changed files with 111 additions and 129 deletions
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212
clang/lib/Frontend/InitPreprocessor.cpp
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@@ -19,47 +19,10 @@
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Path.h"
using namespace clang;
namespace {
class MacroBuilder {
llvm::raw_ostream &Out;
public:
MacroBuilder(llvm::raw_ostream &Output) : Out(Output) {}
/// Append a #define line for Macro of the form "#define Name 1\n".
void DefineMacro(const llvm::Twine &Name) {
Out << "#define " << Name << " 1\n";
}
/// Append a #define line for Macro of the form "#define Name Value\n".
void DefineMacro(const llvm::Twine &Name, const llvm::Twine &Value) {
Out << "#define " << Name << ' ' << Value << '\n';
}
/// Append a #undef line for Macro. Macro should be of the form XXX
/// and we emit "#undef XXX".
void UndefineMacro(const llvm::Twine &Name) {
Out << "#undef " << Name << '\n';
}
/// Directly append Str and a newline to the underlying buffer.
void Append(const llvm::Twine& Str) {
Out << Str << '\n';
}
// FIXME: deprecated
void AppendVector(const std::vector<char> &v) {
Out << llvm::StringRef(&v[0], v.size());
}
};
} // end anonymous namespace
// Append a #define line to Buf for Macro. Macro should be of the form XXX,
// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
// "#define XXX Y z W". To get a #define with no value, use "XXX=".
@@ -77,10 +40,10 @@ static void DefineBuiltinMacro(MacroBuilder &Builder, llvm::StringRef Macro,
<< MacroName;
}
Builder.DefineMacro(MacroName, MacroBody.substr(0, End));
Builder.defineMacro(MacroName, MacroBody.substr(0, End));
} else {
// Push "macroname 1".
Builder.DefineMacro(Macro);
Builder.defineMacro(Macro);
}
}
@@ -103,16 +66,16 @@ std::string clang::NormalizeDashIncludePath(llvm::StringRef File) {
/// AddImplicitInclude - Add an implicit #include of the specified file to the
/// predefines buffer.
static void AddImplicitInclude(MacroBuilder &Builder, llvm::StringRef File) {
Builder.Append("#include \"" +
Builder.append("#include \"" +
llvm::Twine(NormalizeDashIncludePath(File)) + "\"");
}
static void AddImplicitIncludeMacros(MacroBuilder &Builder,
llvm::StringRef File) {
Builder.Append("#__include_macros \"" +
Builder.append("#__include_macros \"" +
llvm::Twine(NormalizeDashIncludePath(File)) + "\"");
// Marker token to stop the __include_macros fetch loop.
Builder.Append("##"); // ##?
Builder.append("##"); // ##?
}
/// AddImplicitIncludePTH - Add an implicit #include using the original file
@@ -178,21 +141,21 @@ static void DefineFloatMacros(MacroBuilder &Builder, llvm::StringRef Prefix,
llvm::Twine DefPrefix = "__" + Prefix + "_";
Builder.DefineMacro(DefPrefix + "DENORM_MIN__", DenormMin);
Builder.DefineMacro(DefPrefix + "HAS_DENORM__");
Builder.DefineMacro(DefPrefix + "DIG__", llvm::Twine(Digits));
Builder.DefineMacro(DefPrefix + "EPSILON__", llvm::Twine(Epsilon));
Builder.DefineMacro(DefPrefix + "HAS_INFINITY__");
Builder.DefineMacro(DefPrefix + "HAS_QUIET_NAN__");
Builder.DefineMacro(DefPrefix + "MANT_DIG__", llvm::Twine(MantissaDigits));
Builder.defineMacro(DefPrefix + "DENORM_MIN__", DenormMin);
Builder.defineMacro(DefPrefix + "HAS_DENORM__");
Builder.defineMacro(DefPrefix + "DIG__", llvm::Twine(Digits));
Builder.defineMacro(DefPrefix + "EPSILON__", llvm::Twine(Epsilon));
Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
Builder.defineMacro(DefPrefix + "MANT_DIG__", llvm::Twine(MantissaDigits));
Builder.DefineMacro(DefPrefix + "MAX_10_EXP__", llvm::Twine(Max10Exp));
Builder.DefineMacro(DefPrefix + "MAX_EXP__", llvm::Twine(MaxExp));
Builder.DefineMacro(DefPrefix + "MAX__", llvm::Twine(Max));
Builder.defineMacro(DefPrefix + "MAX_10_EXP__", llvm::Twine(Max10Exp));
Builder.defineMacro(DefPrefix + "MAX_EXP__", llvm::Twine(MaxExp));
Builder.defineMacro(DefPrefix + "MAX__", llvm::Twine(Max));
Builder.DefineMacro(DefPrefix + "MIN_10_EXP__","("+llvm::Twine(Min10Exp)+")");
Builder.DefineMacro(DefPrefix + "MIN_EXP__", "("+llvm::Twine(MinExp)+")");
Builder.DefineMacro(DefPrefix + "MIN__", llvm::Twine(Min));
Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+llvm::Twine(Min10Exp)+")");
Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+llvm::Twine(MinExp)+")");
Builder.defineMacro(DefPrefix + "MIN__", llvm::Twine(Min));
}
@@ -208,7 +171,7 @@ static void DefineTypeSize(llvm::StringRef MacroName, unsigned TypeWidth,
else
MaxVal = ~0LL >> (64-TypeWidth);
Builder.DefineMacro(MacroName, llvm::Twine(MaxVal) + ValSuffix);
Builder.defineMacro(MacroName, llvm::Twine(MaxVal) + ValSuffix);
}
/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
@@ -221,12 +184,12 @@ static void DefineTypeSize(llvm::StringRef MacroName, TargetInfo::IntType Ty,
static void DefineType(const llvm::Twine &MacroName, TargetInfo::IntType Ty,
MacroBuilder &Builder) {
Builder.DefineMacro(MacroName, TargetInfo::getTypeName(Ty));
Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
}
static void DefineTypeWidth(llvm::StringRef MacroName, TargetInfo::IntType Ty,
const TargetInfo &TI, MacroBuilder &Builder) {
Builder.DefineMacro(MacroName, llvm::Twine(TI.getTypeWidth(Ty)));
Builder.defineMacro(MacroName, llvm::Twine(TI.getTypeWidth(Ty)));
}
static void DefineExactWidthIntType(TargetInfo::IntType Ty,
@@ -236,7 +199,7 @@ static void DefineExactWidthIntType(TargetInfo::IntType Ty,
llvm::StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty));
if (!ConstSuffix.empty())
Builder.DefineMacro("__INT" + llvm::Twine(TypeWidth) + "_C_SUFFIX__",
Builder.defineMacro("__INT" + llvm::Twine(TypeWidth) + "_C_SUFFIX__",
ConstSuffix);
}
@@ -244,123 +207,123 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
const LangOptions &LangOpts,
MacroBuilder &Builder) {
// Compiler version introspection macros.
Builder.DefineMacro("__llvm__"); // LLVM Backend
Builder.DefineMacro("__clang__"); // Clang Frontend
Builder.defineMacro("__llvm__"); // LLVM Backend
Builder.defineMacro("__clang__"); // Clang Frontend
// Currently claim to be compatible with GCC 4.2.1-5621.
Builder.DefineMacro("__GNUC_MINOR__", "2");
Builder.DefineMacro("__GNUC_PATCHLEVEL__", "1");
Builder.DefineMacro("__GNUC__", "4");
Builder.DefineMacro("__GXX_ABI_VERSION", "1002");
Builder.DefineMacro("__VERSION__", "\"4.2.1 Compatible Clang Compiler\"");
Builder.defineMacro("__GNUC_MINOR__", "2");
Builder.defineMacro("__GNUC_PATCHLEVEL__", "1");
Builder.defineMacro("__GNUC__", "4");
Builder.defineMacro("__GXX_ABI_VERSION", "1002");
Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible Clang Compiler\"");
// Initialize language-specific preprocessor defines.
// These should all be defined in the preprocessor according to the
// current language configuration.
if (!LangOpts.Microsoft)
Builder.DefineMacro("__STDC__");
Builder.defineMacro("__STDC__");
if (LangOpts.AsmPreprocessor)
Builder.DefineMacro("__ASSEMBLER__");
Builder.defineMacro("__ASSEMBLER__");
if (!LangOpts.CPlusPlus) {
if (LangOpts.C99)
Builder.DefineMacro("__STDC_VERSION__", "199901L");
Builder.defineMacro("__STDC_VERSION__", "199901L");
else if (!LangOpts.GNUMode && LangOpts.Digraphs)
Builder.DefineMacro("__STDC_VERSION__", "199409L");
Builder.defineMacro("__STDC_VERSION__", "199409L");
}
// Standard conforming mode?
if (!LangOpts.GNUMode)
Builder.DefineMacro("__STRICT_ANSI__");
Builder.defineMacro("__STRICT_ANSI__");
if (LangOpts.CPlusPlus0x)
Builder.DefineMacro("__GXX_EXPERIMENTAL_CXX0X__");
Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
if (LangOpts.Freestanding)
Builder.DefineMacro("__STDC_HOSTED__", "0");
Builder.defineMacro("__STDC_HOSTED__", "0");
else
Builder.DefineMacro("__STDC_HOSTED__");
Builder.defineMacro("__STDC_HOSTED__");
if (LangOpts.ObjC1) {
Builder.DefineMacro("__OBJC__");
Builder.defineMacro("__OBJC__");
if (LangOpts.ObjCNonFragileABI) {
Builder.DefineMacro("__OBJC2__");
Builder.DefineMacro("OBJC_ZEROCOST_EXCEPTIONS");
Builder.defineMacro("__OBJC2__");
Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
}
if (LangOpts.getGCMode() != LangOptions::NonGC)
Builder.DefineMacro("__OBJC_GC__");
Builder.defineMacro("__OBJC_GC__");
if (LangOpts.NeXTRuntime)
Builder.DefineMacro("__NEXT_RUNTIME__");
Builder.defineMacro("__NEXT_RUNTIME__");
}
// darwin_constant_cfstrings controls this. This is also dependent
// on other things like the runtime I believe. This is set even for C code.
Builder.DefineMacro("__CONSTANT_CFSTRINGS__");
Builder.defineMacro("__CONSTANT_CFSTRINGS__");
if (LangOpts.ObjC2)
Builder.DefineMacro("OBJC_NEW_PROPERTIES");
Builder.defineMacro("OBJC_NEW_PROPERTIES");
if (LangOpts.PascalStrings)
Builder.DefineMacro("__PASCAL_STRINGS__");
Builder.defineMacro("__PASCAL_STRINGS__");
if (LangOpts.Blocks) {
Builder.DefineMacro("__block", "__attribute__((__blocks__(byref)))");
Builder.DefineMacro("__BLOCKS__");
Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
Builder.defineMacro("__BLOCKS__");
}
if (LangOpts.Exceptions)
Builder.DefineMacro("__EXCEPTIONS");
Builder.defineMacro("__EXCEPTIONS");
if (LangOpts.CPlusPlus) {
Builder.DefineMacro("__DEPRECATED");
Builder.DefineMacro("__GNUG__", "4");
Builder.DefineMacro("__GXX_WEAK__");
Builder.defineMacro("__DEPRECATED");
Builder.defineMacro("__GNUG__", "4");
Builder.defineMacro("__GXX_WEAK__");
if (LangOpts.GNUMode)
Builder.DefineMacro("__cplusplus");
Builder.defineMacro("__cplusplus");
else
// C++ [cpp.predefined]p1:
// The name_ _cplusplusis defined to the value199711Lwhen compiling a
// C++ translation unit.
Builder.DefineMacro("__cplusplus", "199711L");
Builder.DefineMacro("__private_extern__", "extern");
Builder.defineMacro("__cplusplus", "199711L");
Builder.defineMacro("__private_extern__", "extern");
// Ugly hack to work with GNU libstdc++.
Builder.DefineMacro("_GNU_SOURCE");
Builder.defineMacro("_GNU_SOURCE");
}
if (LangOpts.Microsoft) {
// Filter out some microsoft extensions when trying to parse in ms-compat
// mode.
Builder.DefineMacro("__int8", "__INT8_TYPE__");
Builder.DefineMacro("__int16", "__INT16_TYPE__");
Builder.DefineMacro("__int32", "__INT32_TYPE__");
Builder.DefineMacro("__int64", "__INT64_TYPE__");
Builder.defineMacro("__int8", "__INT8_TYPE__");
Builder.defineMacro("__int16", "__INT16_TYPE__");
Builder.defineMacro("__int32", "__INT32_TYPE__");
Builder.defineMacro("__int64", "__INT64_TYPE__");
// Both __PRETTY_FUNCTION__ and __FUNCTION__ are GCC extensions, however
// VC++ appears to only like __FUNCTION__.
Builder.DefineMacro("__PRETTY_FUNCTION__", "__FUNCTION__");
Builder.defineMacro("__PRETTY_FUNCTION__", "__FUNCTION__");
// Work around some issues with Visual C++ headerws.
if (LangOpts.CPlusPlus) {
// Since we define wchar_t in C++ mode.
Builder.DefineMacro("_WCHAR_T_DEFINED");
Builder.DefineMacro("_NATIVE_WCHAR_T_DEFINED");
Builder.defineMacro("_WCHAR_T_DEFINED");
Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
// FIXME: This should be temporary until we have a __pragma
// solution, to avoid some errors flagged in VC++ headers.
Builder.DefineMacro("_CRT_SECURE_CPP_OVERLOAD_SECURE_NAMES", "0");
Builder.defineMacro("_CRT_SECURE_CPP_OVERLOAD_SECURE_NAMES", "0");
}
}
if (LangOpts.Optimize)
Builder.DefineMacro("__OPTIMIZE__");
Builder.defineMacro("__OPTIMIZE__");
if (LangOpts.OptimizeSize)
Builder.DefineMacro("__OPTIMIZE_SIZE__");
Builder.defineMacro("__OPTIMIZE_SIZE__");
// Initialize target-specific preprocessor defines.
// Define type sizing macros based on the target properties.
assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
Builder.DefineMacro("__CHAR_BIT__", "8");
Builder.defineMacro("__CHAR_BIT__", "8");
DefineTypeSize("__SCHAR_MAX__", TI.getCharWidth(), "", true, Builder);
DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
@@ -390,14 +353,14 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat());
// Define a __POINTER_WIDTH__ macro for stdint.h.
Builder.DefineMacro("__POINTER_WIDTH__",
Builder.defineMacro("__POINTER_WIDTH__",
llvm::Twine((int)TI.getPointerWidth(0)));
if (!LangOpts.CharIsSigned)
Builder.DefineMacro("__CHAR_UNSIGNED__");
Builder.defineMacro("__CHAR_UNSIGNED__");
// Define exact-width integer types for stdint.h
Builder.DefineMacro("__INT" + llvm::Twine(TI.getCharWidth()) + "_TYPE__",
Builder.defineMacro("__INT" + llvm::Twine(TI.getCharWidth()) + "_TYPE__",
"char");
if (TI.getShortWidth() > TI.getCharWidth())
@@ -413,44 +376,43 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
// Add __builtin_va_list typedef.
Builder.Append(TI.getVAListDeclaration());
Builder.append(TI.getVAListDeclaration());
if (const char *Prefix = TI.getUserLabelPrefix())
Builder.DefineMacro("__USER_LABEL_PREFIX__", Prefix);
Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
// Build configuration options. FIXME: these should be controlled by
// command line options or something.
Builder.DefineMacro("__FINITE_MATH_ONLY__", "0");
Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
if (LangOpts.GNUInline)
Builder.DefineMacro("__GNUC_GNU_INLINE__");
Builder.defineMacro("__GNUC_GNU_INLINE__");
else
Builder.DefineMacro("__GNUC_STDC_INLINE__");
Builder.defineMacro("__GNUC_STDC_INLINE__");
if (LangOpts.NoInline)
Builder.DefineMacro("__NO_INLINE__");
Builder.defineMacro("__NO_INLINE__");
if (unsigned PICLevel = LangOpts.PICLevel) {
Builder.DefineMacro("__PIC__", llvm::Twine(PICLevel));
Builder.DefineMacro("__pic__", llvm::Twine(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");
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));
Builder.defineMacro("__DECIMAL_DIG__", llvm::Twine(Dig));
if (LangOpts.getStackProtectorMode() == LangOptions::SSPOn)
Builder.DefineMacro("__SSP__");
Builder.defineMacro("__SSP__");
else if (LangOpts.getStackProtectorMode() == LangOptions::SSPReq)
Builder.DefineMacro("__SSP_ALL__", "2");
Builder.defineMacro("__SSP_ALL__", "2");
// Get other target #defines.
// FIXME: avoid temporary vector.
std::vector<char> Buf;
TI.getTargetDefines(LangOpts, Buf);
Builder.AppendVector(Buf);
Builder.append(llvm::StringRef(&Buf[0], Buf.size()));
}
// Initialize the remapping of files to alternative contents, e.g.,
@@ -513,7 +475,7 @@ void clang::InitializePreprocessor(Preprocessor &PP,
InitializeFileRemapping(PP.getDiagnostics(), PP.getSourceManager(),
PP.getFileManager(), InitOpts);
Builder.Append("# 1 \"<built-in>\" 3");
Builder.append("# 1 \"<built-in>\" 3");
// Install things like __POWERPC__, __GNUC__, etc into the macro table.
if (InitOpts.UsePredefines)
@@ -522,12 +484,12 @@ void clang::InitializePreprocessor(Preprocessor &PP,
// Add on the predefines from the driver. Wrap in a #line directive to report
// that they come from the command line.
Builder.Append("# 1 \"<command line>\" 1");
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);
Builder.undefineMacro(InitOpts.Macros[i].first);
else
DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
&PP.getDiagnostics());
@@ -548,7 +510,7 @@ void clang::InitializePreprocessor(Preprocessor &PP,
}
// Exit the command line and go back to <built-in> (2 is LC_LEAVE).
Builder.Append("# 1 \"<built-in>\" 2");
Builder.append("# 1 \"<built-in>\" 2");
// Copy PredefinedBuffer into the Preprocessor.
PP.setPredefines(Predefines.str());