//===- SparseTensorUtils.h - Enums shared with the runtime ------*- 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
//
//===----------------------------------------------------------------------===//
//
// This header file defines several enums shared between
// Transforms/SparseTensorConversion.cpp and ExecutionEngine/SparseUtils.cpp
//
//===----------------------------------------------------------------------===//

#ifndef MLIR_EXECUTIONENGINE_SPARSETENSORUTILS_H_
#define MLIR_EXECUTIONENGINE_SPARSETENSORUTILS_H_

#include <cinttypes>

extern "C" {

/// Encoding of the elemental type, for "overloading" @newSparseTensor.
enum class OverheadType : uint32_t { kU64 = 1, kU32 = 2, kU16 = 3, kU8 = 4 };

/// Encoding of the elemental type, for "overloading" @newSparseTensor.
enum class PrimaryType : uint32_t {
  kF64 = 1,
  kF32 = 2,
  kI64 = 3,
  kI32 = 4,
  kI16 = 5,
  kI8 = 6
};

/// The actions performed by @newSparseTensor.
enum class Action : uint32_t {
  kEmpty = 0,
  kFromFile = 1,
  kFromCOO = 2,
  kEmptyCOO = 3,
  kToCOO = 4,
  kToIterator = 5
};

/// This enum mimics `SparseTensorEncodingAttr::DimLevelType` for
/// breaking dependency cycles.  `SparseTensorEncodingAttr::DimLevelType`
/// is the source of truth and this enum should be kept consistent with it.
enum class DimLevelType : uint8_t {
  kDense = 0,
  kCompressed = 1,
  kSingleton = 2
};

} // extern "C"

#endif // MLIR_EXECUTIONENGINE_SPARSETENSORUTILS_H_