C++ raw_ostream::write_escaped方法代码示例

/// \brief Print a template integral argument value.
///
/// \param TemplArg the TemplateArgument instance to print.
///
/// \param Out the raw_ostream instance to use for printing.
static void printIntegral(const TemplateArgument &TemplArg,
                          raw_ostream &Out) {
  const ::clang::Type *T = TemplArg.getIntegralType().getTypePtr();
  const llvm::APSInt &Val = TemplArg.getAsIntegral();

  if (T->isBooleanType()) {
    Out << (Val.getBoolValue() ? "true" : "false");
  } else if (T->isCharType()) {
    const char Ch = Val.getZExtValue();
    Out << ((Ch == '\'') ? "'\\" : "'");
    Out.write_escaped(StringRef(&Ch, 1), /*UseHexEscapes=*/ true);
    Out << "'";
  } else {
    Out << Val;
  }
}

void
DWARFFormValue::dump(raw_ostream &OS, const DWARFUnit *cu) const {
  DataExtractor debug_str_data(cu->getStringSection(), true, 0);
  DataExtractor debug_str_offset_data(cu->getStringOffsetSection(), true, 0);
  uint64_t uvalue = Value.uval;
  bool cu_relative_offset = false;

  switch (Form) {
  case DW_FORM_addr:      OS << format("0x%016" PRIx64, uvalue); break;
  case DW_FORM_GNU_addr_index: {
    OS << format(" indexed (%8.8x) address = ", (uint32_t)uvalue);
    uint64_t Address;
    if (cu->getAddrOffsetSectionItem(uvalue, Address))
      OS << format("0x%016" PRIx64, Address);
    else
      OS << "<no .debug_addr section>";
    break;
  }
  case DW_FORM_flag_present: OS << "true"; break;
  case DW_FORM_flag:
  case DW_FORM_data1:     OS << format("0x%02x", (uint8_t)uvalue); break;
  case DW_FORM_data2:     OS << format("0x%04x", (uint16_t)uvalue); break;
  case DW_FORM_data4:     OS << format("0x%08x", (uint32_t)uvalue); break;
  case DW_FORM_ref_sig8:
  case DW_FORM_data8:     OS << format("0x%016" PRIx64, uvalue); break;
  case DW_FORM_string:
    OS << '"';
    OS.write_escaped(Value.cstr);
    OS << '"';
    break;
  case DW_FORM_exprloc:
  case DW_FORM_block:
  case DW_FORM_block1:
  case DW_FORM_block2:
  case DW_FORM_block4:
    if (uvalue > 0) {
      switch (Form) {
      case DW_FORM_exprloc:
      case DW_FORM_block:  OS << format("<0x%" PRIx64 "> ", uvalue);     break;
      case DW_FORM_block1: OS << format("<0x%2.2x> ", (uint8_t)uvalue);  break;
      case DW_FORM_block2: OS << format("<0x%4.4x> ", (uint16_t)uvalue); break;
      case DW_FORM_block4: OS << format("<0x%8.8x> ", (uint32_t)uvalue); break;
      default: break;
      }

      const uint8_t* data_ptr = Value.data;
      if (data_ptr) {
        // uvalue contains size of block
        const uint8_t* end_data_ptr = data_ptr + uvalue;
        while (data_ptr < end_data_ptr) {
          OS << format("%2.2x ", *data_ptr);
          ++data_ptr;
        }
      }
      else
        OS << "NULL";
    }
    break;

  case DW_FORM_sdata:     OS << Value.sval; break;
  case DW_FORM_udata:     OS << Value.uval; break;
  case DW_FORM_strp: {
    OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue);
    Optional<const char *> DbgStr = getAsCString(cu);
    if (DbgStr.hasValue()) {
      OS << '"';
      OS.write_escaped(DbgStr.getValue());
      OS << '"';
    }
    break;
  }
  case DW_FORM_GNU_str_index: {
    OS << format(" indexed (%8.8x) string = ", (uint32_t)uvalue);
    Optional<const char *> DbgStr = getAsCString(cu);
    if (DbgStr.hasValue()) {
      OS << '"';
      OS.write_escaped(DbgStr.getValue());
      OS << '"';
    }
    break;
  }
  case DW_FORM_ref_addr:
    OS << format("0x%016" PRIx64, uvalue);
    break;
  case DW_FORM_ref1:
    cu_relative_offset = true;
    OS << format("cu + 0x%2.2x", (uint8_t)uvalue);
    break;
  case DW_FORM_ref2:
    cu_relative_offset = true;
    OS << format("cu + 0x%4.4x", (uint16_t)uvalue);
    break;
  case DW_FORM_ref4:
    cu_relative_offset = true;
    OS << format("cu + 0x%4.4x", (uint32_t)uvalue);
    break;
  case DW_FORM_ref8:
    cu_relative_offset = true;
    OS << format("cu + 0x%8.8" PRIx64, uvalue);
    break;
//.........这里部分代码省略.........

static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI,
                      raw_ostream &OS) {

  AsmLexer Lexer(MAI);
  Lexer.setBuffer(SrcMgr.getMemoryBuffer(SrcMgr.getMainFileID())->getBuffer());

  bool Error = false;
  while (Lexer.Lex().isNot(AsmToken::Eof)) {
    const AsmToken &Tok = Lexer.getTok();

    switch (Tok.getKind()) {
    default:
      SrcMgr.PrintMessage(Lexer.getLoc(), SourceMgr::DK_Warning,
                          "unknown token");
      Error = true;
      break;
    case AsmToken::Error:
      Error = true; // error already printed.
      break;
    case AsmToken::Identifier:
      OS << "identifier: " << Lexer.getTok().getString();
      break;
    case AsmToken::Integer:
      OS << "int: " << Lexer.getTok().getString();
      break;
    case AsmToken::Real:
      OS << "real: " << Lexer.getTok().getString();
      break;
    case AsmToken::String:
      OS << "string: " << Lexer.getTok().getString();
      break;

    case AsmToken::Amp:            OS << "Amp"; break;
    case AsmToken::AmpAmp:         OS << "AmpAmp"; break;
    case AsmToken::At:             OS << "At"; break;
    case AsmToken::Caret:          OS << "Caret"; break;
    case AsmToken::Colon:          OS << "Colon"; break;
    case AsmToken::Comma:          OS << "Comma"; break;
    case AsmToken::Dollar:         OS << "Dollar"; break;
    case AsmToken::Dot:            OS << "Dot"; break;
    case AsmToken::EndOfStatement: OS << "EndOfStatement"; break;
    case AsmToken::Eof:            OS << "Eof"; break;
    case AsmToken::Equal:          OS << "Equal"; break;
    case AsmToken::EqualEqual:     OS << "EqualEqual"; break;
    case AsmToken::Exclaim:        OS << "Exclaim"; break;
    case AsmToken::ExclaimEqual:   OS << "ExclaimEqual"; break;
    case AsmToken::Greater:        OS << "Greater"; break;
    case AsmToken::GreaterEqual:   OS << "GreaterEqual"; break;
    case AsmToken::GreaterGreater: OS << "GreaterGreater"; break;
    case AsmToken::Hash:           OS << "Hash"; break;
    case AsmToken::LBrac:          OS << "LBrac"; break;
    case AsmToken::LCurly:         OS << "LCurly"; break;
    case AsmToken::LParen:         OS << "LParen"; break;
    case AsmToken::Less:           OS << "Less"; break;
    case AsmToken::LessEqual:      OS << "LessEqual"; break;
    case AsmToken::LessGreater:    OS << "LessGreater"; break;
    case AsmToken::LessLess:       OS << "LessLess"; break;
    case AsmToken::Minus:          OS << "Minus"; break;
    case AsmToken::Percent:        OS << "Percent"; break;
    case AsmToken::Pipe:           OS << "Pipe"; break;
    case AsmToken::PipePipe:       OS << "PipePipe"; break;
    case AsmToken::Plus:           OS << "Plus"; break;
    case AsmToken::RBrac:          OS << "RBrac"; break;
    case AsmToken::RCurly:         OS << "RCurly"; break;
    case AsmToken::RParen:         OS << "RParen"; break;
    case AsmToken::Slash:          OS << "Slash"; break;
    case AsmToken::Star:           OS << "Star"; break;
    case AsmToken::Tilde:          OS << "Tilde"; break;
    }

    // Print the token string.
    OS << " (\"";
    OS.write_escaped(Tok.getString());
    OS << "\")\n";
  }

  return Error;
}

void Module::print(raw_ostream &OS, unsigned Indent) const {
  OS.indent(Indent);
  if (IsFramework)
    OS << "framework ";
  if (IsExplicit)
    OS << "explicit ";
  OS << "module " << Name;

  if (IsSystem) {
    OS.indent(Indent + 2);
    OS << " [system]";
  }

  OS << " {\n";
  
  if (!Requirements.empty()) {
    OS.indent(Indent + 2);
    OS << "requires ";
    for (unsigned I = 0, N = Requirements.size(); I != N; ++I) {
      if (I)
        OS << ", ";
      if (!Requirements[I].second)
        OS << "!";
      OS << Requirements[I].first;
    }
    OS << "\n";
  }
  
  if (const FileEntry *UmbrellaHeader = getUmbrellaHeader()) {
    OS.indent(Indent + 2);
    OS << "umbrella header \"";
    OS.write_escaped(UmbrellaHeader->getName());
    OS << "\"\n";
  } else if (const DirectoryEntry *UmbrellaDir = getUmbrellaDir()) {
    OS.indent(Indent + 2);
    OS << "umbrella \"";
    OS.write_escaped(UmbrellaDir->getName());
    OS << "\"\n";    
  }

  if (!ConfigMacros.empty() || ConfigMacrosExhaustive) {
    OS.indent(Indent + 2);
    OS << "config_macros ";
    if (ConfigMacrosExhaustive)
      OS << "[exhaustive]";
    for (unsigned I = 0, N = ConfigMacros.size(); I != N; ++I) {
      if (I)
        OS << ", ";
      OS << ConfigMacros[I];
    }
    OS << "\n";
  }

  for (unsigned I = 0, N = NormalHeaders.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "header \"";
    OS.write_escaped(NormalHeaders[I]->getName());
    OS << "\"\n";
  }

  for (unsigned I = 0, N = ExcludedHeaders.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "exclude header \"";
    OS.write_escaped(ExcludedHeaders[I]->getName());
    OS << "\"\n";
  }

  for (unsigned I = 0, N = PrivateHeaders.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "private header \"";
    OS.write_escaped(PrivateHeaders[I]->getName());
    OS << "\"\n";
  }
  
  for (submodule_const_iterator MI = submodule_begin(), MIEnd = submodule_end();
       MI != MIEnd; ++MI)
    // Print inferred subframework modules so that we don't need to re-infer
    // them (requires expensive directory iteration + stat calls) when we build
    // the module. Regular inferred submodules are OK, as we need to look at all
    // those header files anyway.
    if (!(*MI)->IsInferred || (*MI)->IsFramework)
      (*MI)->print(OS, Indent + 2);
  
  for (unsigned I = 0, N = Exports.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "export ";
    if (Module *Restriction = Exports[I].getPointer()) {
      OS << Restriction->getFullModuleName();
      if (Exports[I].getInt())
        OS << ".*";
    } else {
      OS << "*";
    }
    OS << "\n";
  }

  for (unsigned I = 0, N = UnresolvedExports.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "export ";
    printModuleId(OS, UnresolvedExports[I].Id);
//.........这里部分代码省略.........

void DWARFFormValue::dump(raw_ostream &OS, DIDumpOptions DumpOpts) const {
  uint64_t UValue = Value.uval;
  bool CURelativeOffset = false;
  raw_ostream &AddrOS =
      DumpOpts.ShowAddresses ? WithColor(OS, syntax::Address).get() : nulls();
  switch (Form) {
  case DW_FORM_addr:
    AddrOS << format("0x%016" PRIx64, UValue);
    break;
  case DW_FORM_GNU_addr_index: {
    AddrOS << format(" indexed (%8.8x) address = ", (uint32_t)UValue);
    uint64_t Address;
    if (U == nullptr)
      OS << "<invalid dwarf unit>";
    else if (U->getAddrOffsetSectionItem(UValue, Address))
      AddrOS << format("0x%016" PRIx64, Address);
    else
      OS << "<no .debug_addr section>";
    break;
  }
  case DW_FORM_flag_present:
    OS << "true";
    break;
  case DW_FORM_flag:
  case DW_FORM_data1:
    OS << format("0x%02x", (uint8_t)UValue);
    break;
  case DW_FORM_data2:
    OS << format("0x%04x", (uint16_t)UValue);
    break;
  case DW_FORM_data4:
    OS << format("0x%08x", (uint32_t)UValue);
    break;
  case DW_FORM_ref_sig8:
    AddrOS << format("0x%016" PRIx64, UValue);
    break;
  case DW_FORM_data8:
    OS << format("0x%016" PRIx64, UValue);
    break;
  case DW_FORM_data16:
    OS << format_bytes(ArrayRef<uint8_t>(Value.data, 16), None, 16, 16);
    break;
  case DW_FORM_string:
    OS << '"';
    OS.write_escaped(Value.cstr);
    OS << '"';
    break;
  case DW_FORM_exprloc:
  case DW_FORM_block:
  case DW_FORM_block1:
  case DW_FORM_block2:
  case DW_FORM_block4:
    if (UValue > 0) {
      switch (Form) {
      case DW_FORM_exprloc:
      case DW_FORM_block:
        OS << format("<0x%" PRIx64 "> ", UValue);
        break;
      case DW_FORM_block1:
        OS << format("<0x%2.2x> ", (uint8_t)UValue);
        break;
      case DW_FORM_block2:
        OS << format("<0x%4.4x> ", (uint16_t)UValue);
        break;
      case DW_FORM_block4:
        OS << format("<0x%8.8x> ", (uint32_t)UValue);
        break;
      default:
        break;
      }

      const uint8_t *DataPtr = Value.data;
      if (DataPtr) {
        // UValue contains size of block
        const uint8_t *EndDataPtr = DataPtr + UValue;
        while (DataPtr < EndDataPtr) {
          OS << format("%2.2x ", *DataPtr);
          ++DataPtr;
        }
      } else
        OS << "NULL";
    }
    break;

  case DW_FORM_sdata:
    OS << Value.sval;
    break;
  case DW_FORM_udata:
    OS << Value.uval;
    break;
  case DW_FORM_strp:
    if (DumpOpts.Verbose)
      OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)UValue);
    dumpString(OS);
    break;
  case DW_FORM_strx:
  case DW_FORM_strx1:
  case DW_FORM_strx2:
  case DW_FORM_strx3:
  case DW_FORM_strx4:
//.........这里部分代码省略.........

void
DWARFFormValue::dump(raw_ostream &OS, const DWARFCompileUnit *cu) const {
  DataExtractor debug_str_data(cu->getContext().getStringSection(), true, 0);
  uint64_t uvalue = getUnsigned();
  bool cu_relative_offset = false;

  switch (Form) {
  case DW_FORM_addr:      OS << format("0x%016x", uvalue); break;
  case DW_FORM_flag:
  case DW_FORM_data1:     OS << format("0x%02x", uvalue);  break;
  case DW_FORM_data2:     OS << format("0x%04x", uvalue);  break;
  case DW_FORM_data4:     OS << format("0x%08x", uvalue);  break;
  case DW_FORM_data8:     OS << format("0x%016x", uvalue); break;
  case DW_FORM_string:
    OS << '"';
    OS.write_escaped(getAsCString(NULL));
    OS << '"';
    break;
  case DW_FORM_block:
  case DW_FORM_block1:
  case DW_FORM_block2:
  case DW_FORM_block4:
    if (uvalue > 0) {
      switch (Form) {
      case DW_FORM_block:  OS << format("<0x%llx> ", uvalue);            break;
      case DW_FORM_block1: OS << format("<0x%2.2x> ", (uint8_t)uvalue);  break;
      case DW_FORM_block2: OS << format("<0x%4.4x> ", (uint16_t)uvalue); break;
      case DW_FORM_block4: OS << format("<0x%8.8x> ", (uint32_t)uvalue); break;
      default: break;
      }

      const uint8_t* data_ptr = Value.data;
      if (data_ptr) {
        // uvalue contains size of block
        const uint8_t* end_data_ptr = data_ptr + uvalue;
        while (data_ptr < end_data_ptr) {
          OS << format("%2.2x ", *data_ptr);
          ++data_ptr;
        }
      }
      else
        OS << "NULL";
    }
    break;

  case DW_FORM_sdata:     OS << getSigned();   break;
  case DW_FORM_udata:     OS << getUnsigned(); break;
  case DW_FORM_strp: {
    OS << format(" .debug_str[0x%8.8x] = ", (uint32_t)uvalue);
    const char* dbg_str = getAsCString(&debug_str_data);
    if (dbg_str) {
      OS << '"';
      OS.write_escaped(dbg_str);
      OS << '"';
    }
    break;
  }
  case DW_FORM_ref_addr:
    OS << format("0x%016x", uvalue);
    break;
  case DW_FORM_ref1:
    cu_relative_offset = true;
    OS << format("cu + 0x%2.2x", (uint8_t)uvalue);
    break;
  case DW_FORM_ref2:
    cu_relative_offset = true;
    OS << format("cu + 0x%4.4x", (uint16_t)uvalue);
    break;
  case DW_FORM_ref4:
    cu_relative_offset = true;
    OS << format("cu + 0x%4.4x", (uint32_t)uvalue);
    break;
  case DW_FORM_ref8:
    cu_relative_offset = true;
    OS << format("cu + 0x%8.8llx", uvalue);
    break;
  case DW_FORM_ref_udata:
    cu_relative_offset = true;
    OS << format("cu + 0x%llx", uvalue);
    break;

    // All DW_FORM_indirect attributes should be resolved prior to calling
    // this function
  case DW_FORM_indirect:
    OS << "DW_FORM_indirect";
    break;
  default:
    OS << format("DW_FORM(0x%4.4x)", Form);
    break;
  }

  if (cu_relative_offset)
    OS << format(" => {0x%8.8x}", (uvalue + (cu ? cu->getOffset() : 0)));
}

void EmitClangDiagsDefs(RecordKeeper &Records, raw_ostream &OS,
                        const std::string &Component) {
  // Write the #if guard
  if (!Component.empty()) {
    std::string ComponentName = StringRef(Component).upper();
    OS << "#ifdef " << ComponentName << "START\n";
    OS << "__" << ComponentName << "START = DIAG_START_" << ComponentName
       << ",\n";
    OS << "#undef " << ComponentName << "START\n";
    OS << "#endif\n\n";
  }

  const std::vector<Record*> &Diags =
    Records.getAllDerivedDefinitions("Diagnostic");

  std::vector<Record*> DiagGroups
    = Records.getAllDerivedDefinitions("DiagGroup");

  std::map<std::string, GroupInfo> DiagsInGroup;
  groupDiagnostics(Diags, DiagGroups, DiagsInGroup);

  DiagCategoryIDMap CategoryIDs(Records);
  DiagGroupParentMap DGParentMap(Records);

  // Compute the set of diagnostics that are in -Wpedantic.
  RecordSet DiagsInPedantic;
  InferPedantic inferPedantic(DGParentMap, Diags, DiagGroups, DiagsInGroup);
  inferPedantic.compute(&DiagsInPedantic, (RecordVec*)nullptr);

  for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
    const Record &R = *Diags[i];

    // Check if this is an error that is accidentally in a warning
    // group.
    if (isError(R)) {
      if (DefInit *Group = dyn_cast<DefInit>(R.getValueInit("Group"))) {
        const Record *GroupRec = Group->getDef();
        const std::string &GroupName = GroupRec->getValueAsString("GroupName");
        PrintFatalError(R.getLoc(), "Error " + R.getName() +
                      " cannot be in a warning group [" + GroupName + "]");
      }
    }

    // Check that all remarks have an associated diagnostic group.
    if (isRemark(R)) {
      if (!isa<DefInit>(R.getValueInit("Group"))) {
        PrintFatalError(R.getLoc(), "Error " + R.getName() +
                                        " not in any diagnostic group");
      }
    }

    // Filter by component.
    if (!Component.empty() && Component != R.getValueAsString("Component"))
      continue;

    OS << "DIAG(" << R.getName() << ", ";
    OS << R.getValueAsDef("Class")->getName();
    OS << ", diag::" << R.getValueAsDef("DefaultMapping")->getName();

    // Description string.
    OS << ", \"";
    OS.write_escaped(R.getValueAsString("Text")) << '"';

    // Warning associated with the diagnostic. This is stored as an index into
    // the alphabetically sorted warning table.
    if (DefInit *DI = dyn_cast<DefInit>(R.getValueInit("Group"))) {
      std::map<std::string, GroupInfo>::iterator I =
          DiagsInGroup.find(DI->getDef()->getValueAsString("GroupName"));
      assert(I != DiagsInGroup.end());
      OS << ", " << I->second.IDNo;
    } else if (DiagsInPedantic.count(&R)) {
      std::map<std::string, GroupInfo>::iterator I =
        DiagsInGroup.find("pedantic");
      assert(I != DiagsInGroup.end() && "pedantic group not defined");
      OS << ", " << I->second.IDNo;
    } else {
      OS << ", 0";
    }

    // SFINAE response.
    OS << ", " << R.getValueAsDef("SFINAE")->getName();

    // Default warning has no Werror bit.
    if (R.getValueAsBit("WarningNoWerror"))
      OS << ", true";
    else
      OS << ", false";

    // Default warning show in system header bit.
    if (R.getValueAsBit("WarningShowInSystemHeader"))
      OS << ", true";
    else
      OS << ", false";

    // Category number.
    OS << ", " << CategoryIDs.getID(getDiagnosticCategory(&R, DGParentMap));
    OS << ")\n";
  }
}

void EmitClangSACheckers(RecordKeeper &Records, raw_ostream &OS) {
  std::vector<Record*> checkers = Records.getAllDerivedDefinitions("Checker");
  llvm::DenseMap<const Record *, unsigned> checkerRecIndexMap;
  for (unsigned i = 0, e = checkers.size(); i != e; ++i)
    checkerRecIndexMap[checkers[i]] = i;

  // Invert the mapping of checkers to package/group into a one to many
  // mapping of packages/groups to checkers.
  std::map<std::string, GroupInfo> groupInfoByName;
  llvm::DenseMap<const Record *, GroupInfo *> recordGroupMap;

  std::vector<Record*> packages = Records.getAllDerivedDefinitions("Package");
  for (unsigned i = 0, e = packages.size(); i != e; ++i) {
    Record *R = packages[i];
    std::string fullName = getPackageFullName(R);
    if (!fullName.empty()) {
      GroupInfo &info = groupInfoByName[fullName];
      info.Hidden = isHidden(*R);
      recordGroupMap[R] = &info;
    }
  }

  std::vector<Record*>
      checkerGroups = Records.getAllDerivedDefinitions("CheckerGroup");
  for (unsigned i = 0, e = checkerGroups.size(); i != e; ++i) {
    Record *R = checkerGroups[i];
    std::string name = R->getValueAsString("GroupName");
    if (!name.empty()) {
      GroupInfo &info = groupInfoByName[name];
      recordGroupMap[R] = &info;
    }
  }

  for (unsigned i = 0, e = checkers.size(); i != e; ++i) {
    Record *R = checkers[i];
    Record *package = 0;
    if (DefInit *
          DI = dyn_cast<DefInit>(R->getValueInit("ParentPackage")))
      package = DI->getDef();
    if (!isCheckerNamed(R) && !package)
      PrintFatalError(R->getLoc(), "Checker '" + R->getName() +
                      "' is neither named, nor in a package!");

    if (isCheckerNamed(R)) {
      // Create a pseudo-group to hold this checker.
      std::string fullName = getCheckerFullName(R);
      GroupInfo &info = groupInfoByName[fullName];
      info.Hidden = R->getValueAsBit("Hidden");
      recordGroupMap[R] = &info;
      info.Checkers.insert(R);
    } else {
      recordGroupMap[package]->Checkers.insert(R);
    }

    Record *currR = isCheckerNamed(R) ? R : package;
    // Insert the checker and its parent packages into the subgroups set of
    // the corresponding parent package.
    while (DefInit *DI
             = dyn_cast<DefInit>(currR->getValueInit("ParentPackage"))) {
      Record *parentPackage = DI->getDef();
      recordGroupMap[parentPackage]->SubGroups.insert(currR);
      currR = parentPackage;
    }
    // Insert the checker into the set of its group.
    if (DefInit *DI = dyn_cast<DefInit>(R->getValueInit("Group")))
      recordGroupMap[DI->getDef()]->Checkers.insert(R);
  }

  // If a package is in group, add all its checkers and its sub-packages
  // checkers into the group.
  for (unsigned i = 0, e = packages.size(); i != e; ++i)
    if (DefInit *DI = dyn_cast<DefInit>(packages[i]->getValueInit("Group")))
      addPackageToCheckerGroup(packages[i], DI->getDef(), recordGroupMap);

  typedef std::map<std::string, const Record *> SortedRecords;
  typedef llvm::DenseMap<const Record *, unsigned> RecToSortIndex;

  SortedRecords sortedGroups;
  RecToSortIndex groupToSortIndex;
  OS << "\n#ifdef GET_GROUPS\n";
  {
    for (unsigned i = 0, e = checkerGroups.size(); i != e; ++i)
      sortedGroups[checkerGroups[i]->getValueAsString("GroupName")]
                   = checkerGroups[i];

    unsigned sortIndex = 0;
    for (SortedRecords::iterator
           I = sortedGroups.begin(), E = sortedGroups.end(); I != E; ++I) {
      const Record *R = I->second;
  
      OS << "GROUP(" << "\"";
      OS.write_escaped(R->getValueAsString("GroupName")) << "\"";
      OS << ")\n";

      groupToSortIndex[R] = sortIndex++;
    }
  }
  OS << "#endif // GET_GROUPS\n\n";

  OS << "\n#ifdef GET_PACKAGES\n";
//.........这里部分代码省略.........

void ClangDiagGroupsEmitter::run(raw_ostream &OS) {
  // Compute a mapping from a DiagGroup to all of its parents.
  DiagGroupParentMap DGParentMap(Records);
  
  // Invert the 1-[0/1] mapping of diags to group into a one to many mapping of
  // groups to diags in the group.
  std::map<std::string, GroupInfo> DiagsInGroup;
  
  std::vector<Record*> Diags =
    Records.getAllDerivedDefinitions("Diagnostic");
  for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
    const Record *R = Diags[i];
    DefInit *DI = dynamic_cast<DefInit*>(R->getValueInit("Group"));
    if (DI == 0) continue;
    std::string GroupName = DI->getDef()->getValueAsString("GroupName");
    DiagsInGroup[GroupName].DiagsInGroup.push_back(R);
  }
  
  // Add all DiagGroup's to the DiagsInGroup list to make sure we pick up empty
  // groups (these are warnings that GCC supports that clang never produces).
  std::vector<Record*> DiagGroups
    = Records.getAllDerivedDefinitions("DiagGroup");
  for (unsigned i = 0, e = DiagGroups.size(); i != e; ++i) {
    Record *Group = DiagGroups[i];
    GroupInfo &GI = DiagsInGroup[Group->getValueAsString("GroupName")];
    
    std::vector<Record*> SubGroups = Group->getValueAsListOfDefs("SubGroups");
    for (unsigned j = 0, e = SubGroups.size(); j != e; ++j)
      GI.SubGroups.push_back(SubGroups[j]->getValueAsString("GroupName"));
  }
  
  // Assign unique ID numbers to the groups.
  unsigned IDNo = 0;
  for (std::map<std::string, GroupInfo>::iterator
       I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I, ++IDNo)
    I->second.IDNo = IDNo;
  
  // Walk through the groups emitting an array for each diagnostic of the diags
  // that are mapped to.
  OS << "\n#ifdef GET_DIAG_ARRAYS\n";
  unsigned MaxLen = 0;
  for (std::map<std::string, GroupInfo>::iterator
       I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
    MaxLen = std::max(MaxLen, (unsigned)I->first.size());
    
    std::vector<const Record*> &V = I->second.DiagsInGroup;
    if (!V.empty()) {
      OS << "static const short DiagArray" << I->second.IDNo << "[] = { ";
      for (unsigned i = 0, e = V.size(); i != e; ++i)
        OS << "diag::" << V[i]->getName() << ", ";
      OS << "-1 };\n";
    }
    
    const std::vector<std::string> &SubGroups = I->second.SubGroups;
    if (!SubGroups.empty()) {
      OS << "static const short DiagSubGroup" << I->second.IDNo << "[] = { ";
      for (unsigned i = 0, e = SubGroups.size(); i != e; ++i) {
        std::map<std::string, GroupInfo>::iterator RI =
          DiagsInGroup.find(SubGroups[i]);
        assert(RI != DiagsInGroup.end() && "Referenced without existing?");
        OS << RI->second.IDNo << ", ";
      }
      OS << "-1 };\n";
    }
  }
  OS << "#endif // GET_DIAG_ARRAYS\n\n";
  
  // Emit the table now.
  OS << "\n#ifdef GET_DIAG_TABLE\n";
  for (std::map<std::string, GroupInfo>::iterator
       I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
    // Group option string.
    OS << "  { ";
    OS << I->first.size() << ", ";
    OS << "\"";
    OS.write_escaped(I->first) << "\","
                               << std::string(MaxLen-I->first.size()+1, ' ');
    
    // Diagnostics in the group.
    if (I->second.DiagsInGroup.empty())
      OS << "0, ";
    else
      OS << "DiagArray" << I->second.IDNo << ", ";
    
    // Subgroups.
    if (I->second.SubGroups.empty())
      OS << 0;
    else
      OS << "DiagSubGroup" << I->second.IDNo;
    OS << " },\n";
  }
  OS << "#endif // GET_DIAG_TABLE\n\n";
  
  // Emit the category table next.
  DiagCategoryIDMap CategoriesByID(Records);
  OS << "\n#ifdef GET_CATEGORY_TABLE\n";
  for (DiagCategoryIDMap::iterator I = CategoriesByID.begin(),
       E = CategoriesByID.end(); I != E; ++I)
    OS << "CATEGORY(\"" << *I << "\", " << getDiagCategoryEnum(*I) << ")\n";
  OS << "#endif // GET_CATEGORY_TABLE\n\n";
//.........这里部分代码省略.........

void Module::print(raw_ostream &OS, unsigned Indent) const {
  OS.indent(Indent);
  if (IsFramework)
    OS << "framework ";
  if (IsExplicit)
    OS << "explicit ";
  OS << "module " << Name;

  if (IsSystem) {
    OS.indent(Indent + 2);
    OS << " [system]";
  }

  OS << " {\n";
  
  if (!Requires.empty()) {
    OS.indent(Indent + 2);
    OS << "requires ";
    for (unsigned I = 0, N = Requires.size(); I != N; ++I) {
      if (I)
        OS << ", ";
      OS << Requires[I];
    }
    OS << "\n";
  }
  
  if (const FileEntry *UmbrellaHeader = getUmbrellaHeader()) {
    OS.indent(Indent + 2);
    OS << "umbrella header \"";
    OS.write_escaped(UmbrellaHeader->getName());
    OS << "\"\n";
  } else if (const DirectoryEntry *UmbrellaDir = getUmbrellaDir()) {
    OS.indent(Indent + 2);
    OS << "umbrella \"";
    OS.write_escaped(UmbrellaDir->getName());
    OS << "\"\n";    
  }

  if (!ConfigMacros.empty() || ConfigMacrosExhaustive) {
    OS.indent(Indent + 2);
    OS << "config_macros ";
    if (ConfigMacrosExhaustive)
      OS << "[exhaustive]";
    for (unsigned I = 0, N = ConfigMacros.size(); I != N; ++I) {
      if (I)
        OS << ", ";
      OS << ConfigMacros[I];
    }
    OS << "\n";
  }

  for (unsigned I = 0, N = NormalHeaders.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "header \"";
    OS.write_escaped(NormalHeaders[I]->getName());
    OS << "\"\n";
  }

  for (unsigned I = 0, N = ExcludedHeaders.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "exclude header \"";
    OS.write_escaped(ExcludedHeaders[I]->getName());
    OS << "\"\n";
  }

  for (unsigned I = 0, N = PrivateHeaders.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "private header \"";
    OS.write_escaped(PrivateHeaders[I]->getName());
    OS << "\"\n";
  }
  
  for (submodule_const_iterator MI = submodule_begin(), MIEnd = submodule_end();
       MI != MIEnd; ++MI)
    (*MI)->print(OS, Indent + 2);
  
  for (unsigned I = 0, N = Exports.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "export ";
    if (Module *Restriction = Exports[I].getPointer()) {
      OS << Restriction->getFullModuleName();
      if (Exports[I].getInt())
        OS << ".*";
    } else {
      OS << "*";
    }
    OS << "\n";
  }

  for (unsigned I = 0, N = UnresolvedExports.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "export ";
    printModuleId(OS, UnresolvedExports[I].Id);
    if (UnresolvedExports[I].Wildcard) {
      if (UnresolvedExports[I].Id.empty())
        OS << "*";
      else
        OS << ".*";
    }
    OS << "\n";
//.........这里部分代码省略.........

void Module::print(raw_ostream &OS, unsigned Indent) const {
  OS.indent(Indent);
  if (IsFramework)
    OS << "framework ";
  if (IsExplicit)
    OS << "explicit ";
  OS << "module " << Name;

  if (IsSystem || IsExternC) {
    OS.indent(Indent + 2);
    if (IsSystem)
      OS << " [system]";
    if (IsExternC)
      OS << " [extern_c]";
  }

  OS << " {\n";
  
  if (!Requirements.empty()) {
    OS.indent(Indent + 2);
    OS << "requires ";
    for (unsigned I = 0, N = Requirements.size(); I != N; ++I) {
      if (I)
        OS << ", ";
      if (!Requirements[I].second)
        OS << "!";
      OS << Requirements[I].first;
    }
    OS << "\n";
  }
  
  if (Header H = getUmbrellaHeader()) {
    OS.indent(Indent + 2);
    OS << "umbrella header \"";
    OS.write_escaped(H.NameAsWritten);
    OS << "\"\n";
  } else if (DirectoryName D = getUmbrellaDir()) {
    OS.indent(Indent + 2);
    OS << "umbrella \"";
    OS.write_escaped(D.NameAsWritten);
    OS << "\"\n";    
  }

  if (!ConfigMacros.empty() || ConfigMacrosExhaustive) {
    OS.indent(Indent + 2);
    OS << "config_macros ";
    if (ConfigMacrosExhaustive)
      OS << "[exhaustive]";
    for (unsigned I = 0, N = ConfigMacros.size(); I != N; ++I) {
      if (I)
        OS << ", ";
      OS << ConfigMacros[I];
    }
    OS << "\n";
  }

  struct {
    StringRef Prefix;
    HeaderKind Kind;
  } Kinds[] = {{"", HK_Normal},
               {"textual ", HK_Textual},
               {"private ", HK_Private},
               {"private textual ", HK_PrivateTextual},
               {"exclude ", HK_Excluded}};

  for (auto &K : Kinds) {
    for (auto &H : Headers[K.Kind]) {
      OS.indent(Indent + 2);
      OS << K.Prefix << "header \"";
      OS.write_escaped(H.NameAsWritten);
      OS << "\"\n";
    }
  }

  for (submodule_const_iterator MI = submodule_begin(), MIEnd = submodule_end();
       MI != MIEnd; ++MI)
    // Print inferred subframework modules so that we don't need to re-infer
    // them (requires expensive directory iteration + stat calls) when we build
    // the module. Regular inferred submodules are OK, as we need to look at all
    // those header files anyway.
    if (!(*MI)->IsInferred || (*MI)->IsFramework)
      (*MI)->print(OS, Indent + 2);
  
  for (unsigned I = 0, N = Exports.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "export ";
    if (Module *Restriction = Exports[I].getPointer()) {
      OS << Restriction->getFullModuleName();
      if (Exports[I].getInt())
        OS << ".*";
    } else {
      OS << "*";
    }
    OS << "\n";
  }

  for (unsigned I = 0, N = UnresolvedExports.size(); I != N; ++I) {
    OS.indent(Indent + 2);
    OS << "export ";
    printModuleId(OS, UnresolvedExports[I].Id);
//.........这里部分代码省略.........

void EmitClangDiagGroups(RecordKeeper &Records, raw_ostream &OS) {
  // Compute a mapping from a DiagGroup to all of its parents.
  DiagGroupParentMap DGParentMap(Records);

  std::vector<Record*> Diags =
    Records.getAllDerivedDefinitions("Diagnostic");
  
  std::vector<Record*> DiagGroups
    = Records.getAllDerivedDefinitions("DiagGroup");

  std::map<std::string, GroupInfo> DiagsInGroup;
  groupDiagnostics(Diags, DiagGroups, DiagsInGroup);

  // All extensions are implicitly in the "pedantic" group.  Record the
  // implicit set of groups in the "pedantic" group, and use this information
  // later when emitting the group information for Pedantic.
  RecordVec DiagsInPedantic;
  RecordVec GroupsInPedantic;
  InferPedantic inferPedantic(DGParentMap, Diags, DiagGroups, DiagsInGroup);
  inferPedantic.compute(&DiagsInPedantic, &GroupsInPedantic);

  // Walk through the groups emitting an array for each diagnostic of the diags
  // that are mapped to.
  OS << "\n#ifdef GET_DIAG_ARRAYS\n";
  unsigned MaxLen = 0;
  for (std::map<std::string, GroupInfo>::iterator
       I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
    MaxLen = std::max(MaxLen, (unsigned)I->first.size());
    const bool IsPedantic = I->first == "pedantic";

    std::vector<const Record*> &V = I->second.DiagsInGroup;
    if (!V.empty() || (IsPedantic && !DiagsInPedantic.empty())) {
      OS << "static const short DiagArray" << I->second.IDNo << "[] = { ";
      for (unsigned i = 0, e = V.size(); i != e; ++i)
        OS << "diag::" << V[i]->getName() << ", ";
      // Emit the diagnostics implicitly in "pedantic".
      if (IsPedantic) {
        for (unsigned i = 0, e = DiagsInPedantic.size(); i != e; ++i)
          OS << "diag::" << DiagsInPedantic[i]->getName() << ", ";
      }
      OS << "-1 };\n";
    }
    
    const std::vector<std::string> &SubGroups = I->second.SubGroups;
    if (!SubGroups.empty() || (IsPedantic && !GroupsInPedantic.empty())) {
      OS << "static const short DiagSubGroup" << I->second.IDNo << "[] = { ";
      for (unsigned i = 0, e = SubGroups.size(); i != e; ++i) {
        std::map<std::string, GroupInfo>::iterator RI =
          DiagsInGroup.find(SubGroups[i]);
        assert(RI != DiagsInGroup.end() && "Referenced without existing?");
        OS << RI->second.IDNo << ", ";
      }
      // Emit the groups implicitly in "pedantic".
      if (IsPedantic) {
        for (unsigned i = 0, e = GroupsInPedantic.size(); i != e; ++i) {
          const std::string &GroupName =
            GroupsInPedantic[i]->getValueAsString("GroupName");
          std::map<std::string, GroupInfo>::iterator RI =
            DiagsInGroup.find(GroupName);
          assert(RI != DiagsInGroup.end() && "Referenced without existing?");
          OS << RI->second.IDNo << ", ";
        }
      }

      OS << "-1 };\n";
    }
  }
  OS << "#endif // GET_DIAG_ARRAYS\n\n";
  
  // Emit the table now.
  OS << "\n#ifdef GET_DIAG_TABLE\n";
  for (std::map<std::string, GroupInfo>::iterator
       I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
    // Group option string.
    OS << "  { ";
    OS << I->first.size() << ", ";
    OS << "\"";
    if (I->first.find_first_not_of("abcdefghijklmnopqrstuvwxyz"
                                   "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                                   "[email protected]#$%^*-+=:?")!=std::string::npos)
      PrintFatalError("Invalid character in diagnostic group '" +
                      I->first + "'");
    OS.write_escaped(I->first) << "\","
                               << std::string(MaxLen-I->first.size()+1, ' ');

    // Special handling for 'pedantic'.
    const bool IsPedantic = I->first == "pedantic";

    // Diagnostics in the group.
    const bool hasDiags = !I->second.DiagsInGroup.empty() ||
                          (IsPedantic && !DiagsInPedantic.empty());
    if (!hasDiags)
      OS << "0, ";
    else
      OS << "DiagArray" << I->second.IDNo << ", ";
    
    // Subgroups.
    const bool hasSubGroups = !I->second.SubGroups.empty() ||
                              (IsPedantic && !GroupsInPedantic.empty());
    if (!hasSubGroups)
//.........这里部分代码省略.........

void EmitClangDiagsDefs(RecordKeeper &Records, raw_ostream &OS,
                        const std::string &Component) {
  // Write the #if guard
  if (!Component.empty()) {
    std::string ComponentName = StringRef(Component).upper();
    OS << "#ifdef " << ComponentName << "START\n";
    OS << "__" << ComponentName << "START = DIAG_START_" << ComponentName
       << ",\n";
    OS << "#undef " << ComponentName << "START\n";
    OS << "#endif\n\n";
  }

  const std::vector<Record*> &Diags =
    Records.getAllDerivedDefinitions("Diagnostic");

  std::vector<Record*> DiagGroups
    = Records.getAllDerivedDefinitions("DiagGroup");

  std::map<std::string, GroupInfo> DiagsInGroup;
  groupDiagnostics(Diags, DiagGroups, DiagsInGroup);

  DiagCategoryIDMap CategoryIDs(Records);
  DiagGroupParentMap DGParentMap(Records);

  // Compute the set of diagnostics that are in -Wpedantic.
  RecordSet DiagsInPedantic;
  InferPedantic inferPedantic(DGParentMap, Diags, DiagGroups, DiagsInGroup);
  inferPedantic.compute(&DiagsInPedantic, (RecordVec*)0);

  for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
    const Record &R = *Diags[i];
    // Filter by component.
    if (!Component.empty() && Component != R.getValueAsString("Component"))
      continue;

    OS << "DIAG(" << R.getName() << ", ";
    OS << R.getValueAsDef("Class")->getName();
    OS << ", diag::" << R.getValueAsDef("DefaultMapping")->getName();
    
    // Description string.
    OS << ", \"";
    OS.write_escaped(R.getValueAsString("Text")) << '"';
    
    // Warning associated with the diagnostic. This is stored as an index into
    // the alphabetically sorted warning table.
    if (DefInit *DI = dynamic_cast<DefInit*>(R.getValueInit("Group"))) {
      std::map<std::string, GroupInfo>::iterator I =
          DiagsInGroup.find(DI->getDef()->getValueAsString("GroupName"));
      assert(I != DiagsInGroup.end());
      OS << ", " << I->second.IDNo;
    } else if (DiagsInPedantic.count(&R)) {
      std::map<std::string, GroupInfo>::iterator I =
        DiagsInGroup.find("pedantic");
      assert(I != DiagsInGroup.end() && "pedantic group not defined");
      OS << ", " << I->second.IDNo;
    } else {
      OS << ", 0";
    }

    // SFINAE bit
    if (R.getValueAsBit("SFINAE"))
      OS << ", true";
    else
      OS << ", false";

    // Access control bit
    if (R.getValueAsBit("AccessControl"))
      OS << ", true";
    else
      OS << ", false";

    // FIXME: This condition is just to avoid temporary revlock, it can be
    // removed.
    if (R.getValue("WarningNoWerror")) {
      // Default warning has no Werror bit.
      if (R.getValueAsBit("WarningNoWerror"))
        OS << ", true";
      else
        OS << ", false";
  
      // Default warning show in system header bit.
      if (R.getValueAsBit("WarningShowInSystemHeader"))
        OS << ", true";
      else
        OS << ", false";
    }
  
    // Category number.
    OS << ", " << CategoryIDs.getID(getDiagnosticCategory(&R, DGParentMap));
    OS << ")\n";
  }
}