// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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
// SPDX-FileCopyrightText: Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCUDACXX_SOURCE_LOCATION
#define _LIBCUDACXX_SOURCE_LOCATION

#include <cuda/std/detail/__config>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header

#include <cuda/std/cstdint>
#include <cuda/std/version>

#include <cuda/std/__cccl/prologue.h>

#if _CCCL_HAS_BUILTIN(__builtin_FILE) || _CCCL_COMPILER(GCC) || _CCCL_COMPILER(MSVC, >=, 19, 27)
#  define _CCCL_BUILTIN_FILE() __builtin_FILE()
#else // ^^^ _CCCL_HAS_BUILTIN(__builtin_FILE) ^^^ / vvv !_CCCL_HAS_BUILTIN(__builtin_FILE) vvv
#  define _CCCL_BUILTIN_FILE() __FILE__
#endif // !_CCCL_HAS_BUILTIN(__builtin_LINE)

#if _CCCL_HAS_BUILTIN(__builtin_FUNCTION) || _CCCL_COMPILER(GCC) || _CCCL_COMPILER(MSVC, >=, 19, 27)
#  define _CCCL_BUILTIN_FUNCTION() __builtin_FUNCTION()
#else // ^^^ _CCCL_HAS_BUILTIN(__builtin_FUNCTION) ^^^ / vvv !_CCCL_HAS_BUILTIN(__builtin_FUNCTION) vvv
#  define _CCCL_BUILTIN_FUNCTION() "__builtin_FUNCTION is unsupported"
#endif // !_CCCL_HAS_BUILTIN(__builtin_FUNCTION)

#if _CCCL_HAS_BUILTIN(__builtin_LINE) || _CCCL_COMPILER(GCC) || _CCCL_COMPILER(MSVC, >=, 19, 27)
#  define _CCCL_BUILTIN_LINE() __builtin_LINE()
#else // ^^^ _CCCL_HAS_BUILTIN(__builtin_LINE) ^^^ / vvv !_CCCL_HAS_BUILTIN(__builtin_LINE) vvv
#  define _CCCL_BUILTIN_LINE() __LINE__
#endif // !_CCCL_HAS_BUILTIN(__builtin_LINE)

#if _CCCL_HAS_BUILTIN(__builtin_COLUMN) || _CCCL_COMPILER(MSVC, >=, 19, 27)
#  define _CCCL_BUILTIN_COLUMN() __builtin_COLUMN()
#else // ^^^ _CCCL_HAS_BUILTIN(__builtin_COLUMN) ^^^ / vvv !_CCCL_HAS_BUILTIN(__builtin_COLUMN) vvv
#  define _CCCL_BUILTIN_COLUMN() 0
#endif // !_CCCL_HAS_BUILTIN(__builtin_COLUMN)

_CCCL_BEGIN_NAMESPACE_CUDA_STD

//! NOTE: we cannot use `__builtin_source_location` as that requires us to use `::std::source_location::impl`
class source_location
{
private:
  const char* __file_name_     = "";
  const char* __function_name_ = "";
  uint_least32_t __line_       = 0;
  uint_least32_t __column_     = 0;

  // Needed to make C++11 happy
  _CCCL_API explicit constexpr source_location(
    const char* __file, const char* __func, uint_least32_t __line, uint_least32_t __column) noexcept
      : __file_name_(__file)
      , __function_name_(__func)
      , __line_(__line)
      , __column_(__column)
  {}

public:
  [[nodiscard]] _CCCL_API static constexpr source_location current(
    const char* __file      = _CCCL_BUILTIN_FILE(),
    const char* __func      = _CCCL_BUILTIN_FUNCTION(),
    uint_least32_t __line   = _CCCL_BUILTIN_LINE(),
    uint_least32_t __column = _CCCL_BUILTIN_COLUMN()) noexcept
  {
    return source_location{__file, __func, __line, __column};
  }

  _CCCL_HIDE_FROM_ABI constexpr source_location() = default;

  [[nodiscard]] _CCCL_API constexpr uint_least32_t line() const noexcept
  {
    return __line_;
  }
  [[nodiscard]] _CCCL_API constexpr uint_least32_t column() const noexcept
  {
    return __column_;
  }
  [[nodiscard]] _CCCL_API constexpr const char* file_name() const noexcept
  {
    return __file_name_;
  }
  [[nodiscard]] _CCCL_API constexpr const char* function_name() const noexcept
  {
    return __function_name_;
  }
};

_CCCL_END_NAMESPACE_CUDA_STD

#include <cuda/std/__cccl/epilogue.h>

#endif // _LIBCUDACXX_SOURCE_LOCATION