C++ Triple::isTvOS方法代码示例

StringRef swift::getPlatformNameForTriple(const llvm::Triple &triple) {
  if (triple.isiOS()) {
    if (triple.isTvOS()) {
      if (tripleIsAppleTVSimulator(triple))
        return "appletvsimulator";
      return "appletvos";
    }

    if (tripleIsiOSSimulator(triple))
      return "iphonesimulator";
    return "iphoneos";
  }

  if (triple.isWatchOS()) {
    if (tripleIsWatchSimulator(triple))
        return "watchsimulator";
    return "watchos";
  }

  if (triple.isAndroid()) {
    return "android";
  }

  if (triple.isMacOSX())
    return "macosx";

  if (triple.isOSLinux())
    return "linux";

  if (triple.isOSFreeBSD())
    return "freebsd";

  return "";
}

static std::pair<StringRef, clang::VersionTuple>
getOSAndVersionForDiagnostics(const llvm::Triple &triple) {
  StringRef osName;
  unsigned major, minor, micro;
  if (triple.isMacOSX()) {
    // macOS triples represent their versions differently, so we have to use the
    // special accessor.
    triple.getMacOSXVersion(major, minor, micro);
    osName = swift::prettyPlatformString(PlatformKind::OSX);
  } else {
    triple.getOSVersion(major, minor, micro);
    if (triple.isWatchOS()) {
      osName = swift::prettyPlatformString(PlatformKind::watchOS);
    } else if (triple.isTvOS()) {
      assert(triple.isiOS() &&
             "LLVM treats tvOS as a kind of iOS, so tvOS is checked first");
      osName = swift::prettyPlatformString(PlatformKind::tvOS);
    } else if (triple.isiOS()) {
      osName = swift::prettyPlatformString(PlatformKind::iOS);
    } else {
      assert(!triple.isOSDarwin() && "unknown Apple OS");
      // Fallback to the LLVM triple name. This isn't great (it won't be
      // capitalized or anything), but it's better than nothing.
      osName = triple.getOSName();
    }
  }

  assert(!osName.empty());
  clang::VersionTuple version;
  if (micro != 0)
    version = clang::VersionTuple(major, minor, micro);
  else
    version = clang::VersionTuple(major, minor);
  return {osName, version};
}

/// Returns true if the compiler depends on features provided by the ObjC
/// runtime that are not present on the deployment target indicated by
/// \p triple.
static bool wantsObjCRuntime(const llvm::Triple &triple) {
  assert((!triple.isTvOS() || triple.isiOS()) &&
         "tvOS is considered a kind of iOS");

  // When updating the versions listed here, please record the most recent
  // feature being depended on and when it was introduced:
  //
  // - The hook to override class_getImageName (macOS 10.14 and equivalent)
  if (triple.isiOS())
    return triple.isOSVersionLT(12);
  if (triple.isMacOSX())
    return triple.isMacOSXVersionLT(10, 14);
  if (triple.isWatchOS())
    return triple.isOSVersionLT(5);
  llvm_unreachable("unknown Darwin OS");
}

/// Returns true if the compiler depends on features provided by the ObjC
/// runtime that are not present on the deployment target indicated by
/// \p triple.
static bool wantsObjCRuntime(const llvm::Triple &triple) {
  assert((!triple.isTvOS() || triple.isiOS()) &&
         "tvOS is considered a kind of iOS");

  // When updating the versions listed here, please record the most recent
  // feature being depended on and when it was introduced:
  //
  // - Make assigning 'nil' to an NSMutableDictionary subscript delete the
  //   entry, like it does for Swift.Dictionary, rather than trap.
  if (triple.isiOS())
    return triple.isOSVersionLT(9);
  if (triple.isMacOSX())
    return triple.isMacOSXVersionLT(10, 11);
  if (triple.isWatchOS())
    return false;
  llvm_unreachable("unknown Darwin OS");
}

DarwinPlatformKind swift::getDarwinPlatformKind(const llvm::Triple &triple) {
  if (triple.isiOS()) {
    if (triple.isTvOS()) {
      if (tripleIsAppleTVSimulator(triple))
        return DarwinPlatformKind::TvOSSimulator;
      return DarwinPlatformKind::TvOS;
    }

    if (tripleIsiOSSimulator(triple))
      return DarwinPlatformKind::IPhoneOSSimulator;
    return DarwinPlatformKind::IPhoneOS;
  }

  if (triple.isWatchOS()) {
    if (tripleIsWatchSimulator(triple))
      return DarwinPlatformKind::WatchOSSimulator;
    return DarwinPlatformKind::WatchOS;
  }

  if (triple.isMacOSX())
    return DarwinPlatformKind::MacOS;

  llvm_unreachable("Unsupported Darwin platform");
}

bool swift::tripleIsAppleTVSimulator(const llvm::Triple &triple) {
  llvm::Triple::ArchType arch = triple.getArch();
  return (triple.isTvOS() &&
         (arch == llvm::Triple::x86 || arch == llvm::Triple::x86_64));
}

std::pair<bool, bool> LangOptions::setTarget(llvm::Triple triple) {
  clearAllPlatformConditionValues();

  if (triple.getOS() == llvm::Triple::Darwin &&
      triple.getVendor() == llvm::Triple::Apple) {
    // Rewrite darwinX.Y triples to macosx10.X'.Y ones.
    // It affects code generation on our platform.
    llvm::SmallString<16> osxBuf;
    llvm::raw_svector_ostream osx(osxBuf);
    osx << llvm::Triple::getOSTypeName(llvm::Triple::MacOSX);

    unsigned major, minor, micro;
    triple.getMacOSXVersion(major, minor, micro);
    osx << major << "." << minor;
    if (micro != 0)
      osx << "." << micro;

    triple.setOSName(osx.str());
  }
  Target = std::move(triple);

  bool UnsupportedOS = false;

  // Set the "os" platform condition.
  if (Target.isMacOSX())
    addPlatformConditionValue(PlatformConditionKind::OS, "OSX");
  else if (triple.isTvOS())
    addPlatformConditionValue(PlatformConditionKind::OS, "tvOS");
  else if (triple.isWatchOS())
    addPlatformConditionValue(PlatformConditionKind::OS, "watchOS");
  else if (triple.isiOS())
    addPlatformConditionValue(PlatformConditionKind::OS, "iOS");
  else if (triple.isAndroid())
    addPlatformConditionValue(PlatformConditionKind::OS, "Android");
  else if (triple.isOSLinux())
    addPlatformConditionValue(PlatformConditionKind::OS, "Linux");
  else if (triple.isOSFreeBSD())
    addPlatformConditionValue(PlatformConditionKind::OS, "FreeBSD");
  else if (triple.isOSWindows())
    addPlatformConditionValue(PlatformConditionKind::OS, "Windows");
  else if (triple.isWindowsCygwinEnvironment())
    addPlatformConditionValue(PlatformConditionKind::OS, "Cygwin");
  else if (triple.isPS4())
    addPlatformConditionValue(PlatformConditionKind::OS, "PS4");
  else
    UnsupportedOS = true;

  bool UnsupportedArch = false;

  // Set the "arch" platform condition.
  switch (Target.getArch()) {
  case llvm::Triple::ArchType::arm:
  case llvm::Triple::ArchType::thumb:
    addPlatformConditionValue(PlatformConditionKind::Arch, "arm");
    break;
  case llvm::Triple::ArchType::aarch64:
    addPlatformConditionValue(PlatformConditionKind::Arch, "arm64");
    break;
  case llvm::Triple::ArchType::ppc64:
    addPlatformConditionValue(PlatformConditionKind::Arch, "powerpc64");
    break;
  case llvm::Triple::ArchType::ppc64le:
    addPlatformConditionValue(PlatformConditionKind::Arch, "powerpc64le");
    break;
  case llvm::Triple::ArchType::x86:
    addPlatformConditionValue(PlatformConditionKind::Arch, "i386");
    break;
  case llvm::Triple::ArchType::x86_64:
    addPlatformConditionValue(PlatformConditionKind::Arch, "x86_64");
    break;
  case llvm::Triple::ArchType::systemz:
    addPlatformConditionValue(PlatformConditionKind::Arch, "s390x");
    break;
  default:
    UnsupportedArch = true;
  }

  if (UnsupportedOS || UnsupportedArch)
    return { UnsupportedOS, UnsupportedArch };

  // Set the "_endian" platform condition.
  switch (Target.getArch()) {
  case llvm::Triple::ArchType::arm:
  case llvm::Triple::ArchType::thumb:
    addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
    break;
  case llvm::Triple::ArchType::aarch64:
    addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
    break;
  case llvm::Triple::ArchType::ppc64:
    addPlatformConditionValue(PlatformConditionKind::Endianness, "big");
    break;
  case llvm::Triple::ArchType::ppc64le:
    addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
    break;
  case llvm::Triple::ArchType::x86:
    addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
    break;
  case llvm::Triple::ArchType::x86_64:
    addPlatformConditionValue(PlatformConditionKind::Endianness, "little");
//.........这里部分代码省略.........

void getDarwinDefines(MacroBuilder &Builder, const LangOptions &Opts,
                      const llvm::Triple &Triple, StringRef &PlatformName,
                      VersionTuple &PlatformMinVersion) {
  Builder.defineMacro("__APPLE_CC__", "6000");
  Builder.defineMacro("__APPLE__");
  Builder.defineMacro("__STDC_NO_THREADS__");
  Builder.defineMacro("OBJC_NEW_PROPERTIES");
  // AddressSanitizer doesn't play well with source fortification, which is on
  // by default on Darwin.
  if (Opts.Sanitize.has(SanitizerKind::Address))
    Builder.defineMacro("_FORTIFY_SOURCE", "0");

  // Darwin defines __weak, __strong, and __unsafe_unretained even in C mode.
  if (!Opts.ObjC) {
    // __weak is always defined, for use in blocks and with objc pointers.
    Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
    Builder.defineMacro("__strong", "");
    Builder.defineMacro("__unsafe_unretained", "");
  }

  if (Opts.Static)
    Builder.defineMacro("__STATIC__");
  else
    Builder.defineMacro("__DYNAMIC__");

  if (Opts.POSIXThreads)
    Builder.defineMacro("_REENTRANT");

  // Get the platform type and version number from the triple.
  unsigned Maj, Min, Rev;
  if (Triple.isMacOSX()) {
    Triple.getMacOSXVersion(Maj, Min, Rev);
    PlatformName = "macos";
  } else {
    Triple.getOSVersion(Maj, Min, Rev);
    PlatformName = llvm::Triple::getOSTypeName(Triple.getOS());
  }

  // If -target arch-pc-win32-macho option specified, we're
  // generating code for Win32 ABI. No need to emit
  // __ENVIRONMENT_XX_OS_VERSION_MIN_REQUIRED__.
  if (PlatformName == "win32") {
    PlatformMinVersion = VersionTuple(Maj, Min, Rev);
    return;
  }

  // Set the appropriate OS version define.
  if (Triple.isiOS()) {
    assert(Maj < 100 && Min < 100 && Rev < 100 && "Invalid version!");
    char Str[7];
    if (Maj < 10) {
      Str[0] = '0' + Maj;
      Str[1] = '0' + (Min / 10);
      Str[2] = '0' + (Min % 10);
      Str[3] = '0' + (Rev / 10);
      Str[4] = '0' + (Rev % 10);
      Str[5] = '\0';
    } else {
      // Handle versions >= 10.
      Str[0] = '0' + (Maj / 10);
      Str[1] = '0' + (Maj % 10);
      Str[2] = '0' + (Min / 10);
      Str[3] = '0' + (Min % 10);
      Str[4] = '0' + (Rev / 10);
      Str[5] = '0' + (Rev % 10);
      Str[6] = '\0';
    }
    if (Triple.isTvOS())
      Builder.defineMacro("__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__", Str);
    else
      Builder.defineMacro("__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__",
                          Str);

  } else if (Triple.isWatchOS()) {
    assert(Maj < 10 && Min < 100 && Rev < 100 && "Invalid version!");
    char Str[6];
    Str[0] = '0' + Maj;
    Str[1] = '0' + (Min / 10);
    Str[2] = '0' + (Min % 10);
    Str[3] = '0' + (Rev / 10);
    Str[4] = '0' + (Rev % 10);
    Str[5] = '\0';
    Builder.defineMacro("__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__", Str);
  } else if (Triple.isMacOSX()) {
    // Note that the Driver allows versions which aren't representable in the
    // define (because we only get a single digit for the minor and micro
    // revision numbers). So, we limit them to the maximum representable
    // version.
    assert(Maj < 100 && Min < 100 && Rev < 100 && "Invalid version!");
    char Str[7];
    if (Maj < 10 || (Maj == 10 && Min < 10)) {
      Str[0] = '0' + (Maj / 10);
      Str[1] = '0' + (Maj % 10);
      Str[2] = '0' + std::min(Min, 9U);
      Str[3] = '0' + std::min(Rev, 9U);
      Str[4] = '\0';
    } else {
      // Handle versions > 10.9.
      Str[0] = '0' + (Maj / 10);
      Str[1] = '0' + (Maj % 10);
//.........这里部分代码省略.........

std::pair<bool, bool> LangOptions::setTarget(llvm::Triple triple) {
  clearAllTargetConfigOptions();

  if (triple.getOS() == llvm::Triple::Darwin &&
      triple.getVendor() == llvm::Triple::Apple) {
    // Rewrite darwinX.Y triples to macosx10.X'.Y ones.
    // It affects code generation on our platform.
    llvm::SmallString<16> osxBuf;
    llvm::raw_svector_ostream osx(osxBuf);
    osx << llvm::Triple::getOSTypeName(llvm::Triple::MacOSX);

    unsigned major, minor, micro;
    triple.getMacOSXVersion(major, minor, micro);
    osx << major << "." << minor;
    if (micro != 0)
      osx << "." << micro;

    triple.setOSName(osx.str());
  }
  Target = std::move(triple);

  bool UnsupportedOS = false;

  // Set the "os" target configuration.
  if (Target.isMacOSX())
    addTargetConfigOption("os", "OSX");
  else if (triple.isTvOS())
    addTargetConfigOption("os", "tvOS");
  else if (triple.isWatchOS())
    addTargetConfigOption("os", "watchOS");
  else if (triple.isiOS())
    addTargetConfigOption("os", "iOS");
  else if (triple.isOSLinux())
    addTargetConfigOption("os", "Linux");
  else {
    UnsupportedOS = true;
  }

  bool UnsupportedArch = false;

  // Set the "arch" target configuration.
  switch (Target.getArch()) {
  case llvm::Triple::ArchType::arm:
    addTargetConfigOption("arch", "arm");
    break;
  case llvm::Triple::ArchType::aarch64:
    addTargetConfigOption("arch", "arm64");
    break;
  case llvm::Triple::ArchType::x86:
    addTargetConfigOption("arch", "i386");
    break;
  case llvm::Triple::ArchType::x86_64:
    addTargetConfigOption("arch", "x86_64");
    break;
  default:
    UnsupportedArch = true;
  }

  if (UnsupportedOS || UnsupportedArch)
    return { UnsupportedOS, UnsupportedArch };

  // Set the "runtime" target configuration.
  if (EnableObjCInterop)
    addTargetConfigOption("_runtime", "_ObjC");
  else
    addTargetConfigOption("_runtime", "_Native");

  return { false, false };
}