C++ SmallString::erase方法代码示例

本文整理汇总了C++中SmallString::erase方法的典型用法代码示例。如果您正苦于以下问题：C++ SmallString::erase方法的具体用法？C++ SmallString::erase怎么用？C++ SmallString::erase使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SmallString的用法示例。

在下文中一共展示了SmallString::erase方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1:

HeaderSearch::LoadModuleMapResult 
HeaderSearch::loadModuleMapFile(const DirectoryEntry *Dir) {
  llvm::DenseMap<const DirectoryEntry *, bool>::iterator KnownDir
    = DirectoryHasModuleMap.find(Dir);
  if (KnownDir != DirectoryHasModuleMap.end())
    return KnownDir->second? LMM_AlreadyLoaded : LMM_InvalidModuleMap;
  
  SmallString<128> ModuleMapFileName;
  ModuleMapFileName += Dir->getName();
  unsigned ModuleMapDirNameLen = ModuleMapFileName.size();
  llvm::sys::path::append(ModuleMapFileName, "module.map");
  if (const FileEntry *ModuleMapFile = FileMgr.getFile(ModuleMapFileName)) {
    // We have found a module map file. Try to parse it.
    if (ModMap.parseModuleMapFile(ModuleMapFile)) {
      // No suitable module map.
      DirectoryHasModuleMap[Dir] = false;
      return LMM_InvalidModuleMap;
    }

    // This directory has a module map.
    DirectoryHasModuleMap[Dir] = true;
    
    // Check whether there is a private module map that we need to load as well.
    ModuleMapFileName.erase(ModuleMapFileName.begin() + ModuleMapDirNameLen,
                            ModuleMapFileName.end());
    llvm::sys::path::append(ModuleMapFileName, "module_private.map");
    if (const FileEntry *PrivateModuleMapFile
                                        = FileMgr.getFile(ModuleMapFileName)) {
      if (ModMap.parseModuleMapFile(PrivateModuleMapFile)) {
        // No suitable module map.
        DirectoryHasModuleMap[Dir] = false;
        return LMM_InvalidModuleMap;
      }      
    }
    
    return LMM_NewlyLoaded;
  }
  
  // No suitable module map.
  DirectoryHasModuleMap[Dir] = false;
  return LMM_InvalidModuleMap;
}

开发者ID:FrOSt-Foundation，项目名称:clang，代码行数:42，代码来源:HeaderSearch.cpp

示例2: assert

static MCSymbol *GetSymbolFromOperand(const MachineOperand &MO, AsmPrinter &AP){
  MCContext &Ctx = AP.OutContext;

  SmallString<128> Name;
  if (!MO.isGlobal()) {
    assert(MO.isSymbol() && "Isn't a symbol reference");
    Name += AP.MAI->getGlobalPrefix();
    Name += MO.getSymbolName();
  } else {    
    const GlobalValue *GV = MO.getGlobal();
    bool isImplicitlyPrivate = false;
    if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB ||
        (MO.getTargetFlags() & PPCII::MO_NLP_FLAG))
      isImplicitlyPrivate = true;
    
    AP.Mang->getNameWithPrefix(Name, GV, isImplicitlyPrivate);
  }
  
  // If the target flags on the operand changes the name of the symbol, do that
  // before we return the symbol.
  if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB) {
    Name += "$stub";
    const char *PGP = AP.MAI->getPrivateGlobalPrefix();
    const char *Prefix = "";
    if (!Name.startswith(PGP)) {
      // http://llvm.org/bugs/show_bug.cgi?id=15763
      // all stubs and lazy_ptrs should be local symbols, which need leading 'L'
      Prefix = PGP;
    }
    MCSymbol *Sym = Ctx.GetOrCreateSymbol(Twine(Prefix) + Twine(Name));
    MachineModuleInfoImpl::StubValueTy &StubSym =
      getMachOMMI(AP).getFnStubEntry(Sym);
    if (StubSym.getPointer())
      return Sym;
    
    if (MO.isGlobal()) {
      StubSym =
      MachineModuleInfoImpl::
      StubValueTy(AP.Mang->getSymbol(MO.getGlobal()),
                  !MO.getGlobal()->hasInternalLinkage());
    } else {
      Name.erase(Name.end()-5, Name.end());
      StubSym =
      MachineModuleInfoImpl::
      StubValueTy(Ctx.GetOrCreateSymbol(Name.str()), false);
    }
    return Sym;
  }

  // If the symbol reference is actually to a non_lazy_ptr, not to the symbol,
  // then add the suffix.
  if (MO.getTargetFlags() & PPCII::MO_NLP_FLAG) {
    Name += "$non_lazy_ptr";
    MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
  
    MachineModuleInfoMachO &MachO = getMachOMMI(AP);
    
    MachineModuleInfoImpl::StubValueTy &StubSym =
      (MO.getTargetFlags() & PPCII::MO_NLP_HIDDEN_FLAG) ? 
         MachO.getHiddenGVStubEntry(Sym) : MachO.getGVStubEntry(Sym);
    
    if (StubSym.getPointer() == 0) {
      assert(MO.isGlobal() && "Extern symbol not handled yet");
      StubSym = MachineModuleInfoImpl::
                   StubValueTy(AP.Mang->getSymbol(MO.getGlobal()),
                               !MO.getGlobal()->hasInternalLinkage());
    }
    return Sym;
  }
  
  return Ctx.GetOrCreateSymbol(Name.str());
}

开发者ID:8l，项目名称:emscripten-fastcomp，代码行数:72，代码来源:PPCMCInstLower.cpp

示例3: assert

/// GetSymbolFromOperand - Lower an MO_GlobalAddress or MO_ExternalSymbol
/// operand to an MCSymbol.
MCSymbol *X86MCInstLower::
GetSymbolFromOperand(const MachineOperand &MO) const {
  assert((MO.isGlobal() || MO.isSymbol()) && "Isn't a symbol reference");

  SmallString<128> Name;

  if (!MO.isGlobal()) {
    assert(MO.isSymbol());
    Name += MAI.getGlobalPrefix();
    Name += MO.getSymbolName();
  } else {
    const GlobalValue *GV = MO.getGlobal();
    bool isImplicitlyPrivate = false;
    if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB ||
        MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
        MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
        MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
      isImplicitlyPrivate = true;

    Mang->getNameWithPrefix(Name, GV, isImplicitlyPrivate);
  }

  // If the target flags on the operand changes the name of the symbol, do that
  // before we return the symbol.
  switch (MO.getTargetFlags()) {
  default: break;
  case X86II::MO_DLLIMPORT: {
    // Handle dllimport linkage.
    const char *Prefix = "__imp_";
    Name.insert(Name.begin(), Prefix, Prefix+strlen(Prefix));
    break;
  }
  case X86II::MO_DARWIN_NONLAZY:
  case X86II::MO_DARWIN_NONLAZY_PIC_BASE: {
    Name += "$non_lazy_ptr";
    MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());

    MachineModuleInfoImpl::StubValueTy &StubSym =
      getMachOMMI().getGVStubEntry(Sym);
    if (StubSym.getPointer() == 0) {
      assert(MO.isGlobal() && "Extern symbol not handled yet");
      StubSym =
        MachineModuleInfoImpl::
        StubValueTy(Mang->getSymbol(MO.getGlobal()),
                    !MO.getGlobal()->hasInternalLinkage());
    }
    return Sym;
  }
  case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: {
    Name += "$non_lazy_ptr";
    MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
    MachineModuleInfoImpl::StubValueTy &StubSym =
      getMachOMMI().getHiddenGVStubEntry(Sym);
    if (StubSym.getPointer() == 0) {
      assert(MO.isGlobal() && "Extern symbol not handled yet");
      StubSym =
        MachineModuleInfoImpl::
        StubValueTy(Mang->getSymbol(MO.getGlobal()),
                    !MO.getGlobal()->hasInternalLinkage());
    }
    return Sym;
  }
  case X86II::MO_DARWIN_STUB: {
    Name += "$stub";
    MCSymbol *Sym = Ctx.GetOrCreateSymbol(Name.str());
    MachineModuleInfoImpl::StubValueTy &StubSym =
      getMachOMMI().getFnStubEntry(Sym);
    if (StubSym.getPointer())
      return Sym;

    if (MO.isGlobal()) {
      StubSym =
        MachineModuleInfoImpl::
        StubValueTy(Mang->getSymbol(MO.getGlobal()),
                    !MO.getGlobal()->hasInternalLinkage());
    } else {
      Name.erase(Name.end()-5, Name.end());
      StubSym =
        MachineModuleInfoImpl::
        StubValueTy(Ctx.GetOrCreateSymbol(Name.str()), false);
    }
    return Sym;
  }
  }

  return Ctx.GetOrCreateSymbol(Name.str());
}

开发者ID:Abocer，项目名称:android-4.2_r1，代码行数:89，代码来源:X86MCInstLower.cpp

示例4: if

/// printSymbolOperand - Print a raw symbol reference operand.  This handles
/// jump tables, constant pools, global address and external symbols, all of
/// which print to a label with various suffixes for relocation types etc.
void X86AsmPrinter::printSymbolOperand(const MachineOperand &MO,
                                       raw_ostream &O) {
  switch (MO.getType()) {
  default: llvm_unreachable("unknown symbol type!");
  case MachineOperand::MO_JumpTableIndex:
    O << *GetJTISymbol(MO.getIndex());
    break;
  case MachineOperand::MO_ConstantPoolIndex:
    O << *GetCPISymbol(MO.getIndex());
    printOffset(MO.getOffset(), O);
    break;
  case MachineOperand::MO_GlobalAddress: {
    const GlobalValue *GV = MO.getGlobal();

    MCSymbol *GVSym;
    if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB)
      GVSym = GetSymbolWithGlobalValueBase(GV, "$stub");
    else if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
             MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE ||
             MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE)
      GVSym = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
    else
      GVSym = Mang->getSymbol(GV);

    // Handle dllimport linkage.
    if (MO.getTargetFlags() == X86II::MO_DLLIMPORT)
      GVSym = OutContext.GetOrCreateSymbol(Twine("__imp_") + GVSym->getName());

    if (MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY ||
        MO.getTargetFlags() == X86II::MO_DARWIN_NONLAZY_PIC_BASE) {
      MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
      MachineModuleInfoImpl::StubValueTy &StubSym =
        MMI->getObjFileInfo<MachineModuleInfoMachO>().getGVStubEntry(Sym);
      if (StubSym.getPointer() == 0)
        StubSym = MachineModuleInfoImpl::
          StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage());
    } else if (MO.getTargetFlags() == X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE){
      MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$non_lazy_ptr");
      MachineModuleInfoImpl::StubValueTy &StubSym =
        MMI->getObjFileInfo<MachineModuleInfoMachO>().getHiddenGVStubEntry(Sym);
      if (StubSym.getPointer() == 0)
        StubSym = MachineModuleInfoImpl::
          StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage());
    } else if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
      MCSymbol *Sym = GetSymbolWithGlobalValueBase(GV, "$stub");
      MachineModuleInfoImpl::StubValueTy &StubSym =
        MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
      if (StubSym.getPointer() == 0)
        StubSym = MachineModuleInfoImpl::
          StubValueTy(Mang->getSymbol(GV), !GV->hasInternalLinkage());
    }

    // If the name begins with a dollar-sign, enclose it in parens.  We do this
    // to avoid having it look like an integer immediate to the assembler.
    if (GVSym->getName()[0] != '$')
      O << *GVSym;
    else
      O << '(' << *GVSym << ')';
    printOffset(MO.getOffset(), O);
    break;
  }
  case MachineOperand::MO_ExternalSymbol: {
    const MCSymbol *SymToPrint;
    if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
      SmallString<128> TempNameStr;
      TempNameStr += StringRef(MO.getSymbolName());
      TempNameStr += StringRef("$stub");

      MCSymbol *Sym = GetExternalSymbolSymbol(TempNameStr.str());
      MachineModuleInfoImpl::StubValueTy &StubSym =
        MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
      if (StubSym.getPointer() == 0) {
        TempNameStr.erase(TempNameStr.end()-5, TempNameStr.end());
        StubSym = MachineModuleInfoImpl::
          StubValueTy(OutContext.GetOrCreateSymbol(TempNameStr.str()),
                      true);
      }
      SymToPrint = StubSym.getPointer();
    } else {
      SymToPrint = GetExternalSymbolSymbol(MO.getSymbolName());
    }

    // If the name begins with a dollar-sign, enclose it in parens.  We do this
    // to avoid having it look like an integer immediate to the assembler.
    if (SymToPrint->getName()[0] != '$')
      O << *SymToPrint;
    else
      O << '(' << *SymToPrint << '(';
    break;
  }
  }

  switch (MO.getTargetFlags()) {
  default:
    llvm_unreachable("Unknown target flag on GV operand");
  case X86II::MO_NO_FLAG:    // No flag.
    break;
//.........这里部分代码省略.........

开发者ID:sriramnrn，项目名称:llvm-port，代码行数:101，代码来源:X86AsmPrinter.cpp

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