//===--- LangStandards.cpp - Language Standard Definitions ----------------===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

#include "clang/Basic/LangStandard.h"

#include "clang/Config/config.h"

#include "llvm/ADT/StringSwitch.h"

#include "llvm/Support/ErrorHandling.h"

#include "llvm/TargetParser/Triple.h"

using namespace clang;

StringRef clang::languageToString(Language L) {

  switch (L) {

  case Language::Unknown:

    return "Unknown";

  case Language::Asm:

    return "Asm";

  case Language::LLVM_IR:

    return "LLVM IR";

  case Language::C:

    return "C";

  case Language::CXX:

    return "C++";

  case Language::ObjC:

    return "Objective-C";

  case Language::ObjCXX:

    return "Objective-C++";

  case Language::OpenCL:

    return "OpenCL";

  case Language::OpenCLCXX:

    return "OpenCLC++";

  case Language::CUDA:

    return "CUDA";

  case Language::RenderScript:

    return "RenderScript";

  case Language::HIP:

    return "HIP";

  case Language::HLSL:

    return "HLSL";

  }

  llvm_unreachable("unhandled language kind");

}

#define LANGSTANDARD(id, name, lang, desc, features)                           \

  static const LangStandard Lang_##id = {name, desc, features, Language::lang};

#include "clang/Basic/LangStandards.def"

const LangStandard &LangStandard::getLangStandardForKind(Kind K) {

  switch (K) {

  case lang_unspecified:

    llvm::report_fatal_error("getLangStandardForKind() on unspecified kind");

#define LANGSTANDARD(id, name, lang, desc, features) \

    case lang_##id: return Lang_##id;

#include "clang/Basic/LangStandards.def"

  }

  llvm_unreachable("Invalid language kind!");

}

LangStandard::Kind LangStandard::getLangKind(StringRef Name) {

  return llvm::StringSwitch<Kind>(Name)

#define LANGSTANDARD(id, name, lang, desc, features) .Case(name, lang_##id)

#define LANGSTANDARD_ALIAS(id, alias) .Case(alias, lang_##id)

#include "clang/Basic/LangStandards.def"

      .Default(lang_unspecified);

}

const LangStandard *LangStandard::getLangStandardForName(StringRef Name) {

  Kind K = getLangKind(Name);

  if (K == lang_unspecified)

    return nullptr;

  return &getLangStandardForKind(K);

}

LangStandard::Kind clang::getDefaultLanguageStandard(clang::Language Lang,

                                                     const llvm::Triple &T) {

  switch (Lang) {

  case Language::Unknown:

  case Language::LLVM_IR:

    llvm_unreachable("Invalid input kind!");

  case Language::OpenCL:

    return LangStandard::lang_opencl12;

  case Language::OpenCLCXX:

    return LangStandard::lang_openclcpp10;

  case Language::Asm:

  case Language::C:

    // The PS4 uses C99 as the default C standard.

    if (T.isPS4())

      return LangStandard::lang_gnu99;

    return LangStandard::lang_gnu17;

  case Language::ObjC:

    return LangStandard::lang_gnu11;

  case Language::CXX:

  case Language::ObjCXX:

  case Language::CUDA:

  case Language::HIP:

    return LangStandard::lang_gnucxx17;

  case Language::RenderScript:

    return LangStandard::lang_c99;

  case Language::HLSL:

    return LangStandard::lang_hlsl2021;

  }

  llvm_unreachable("unhandled Language kind!");

}