//===- ir_builder.h -------------------------------------------------------===//
//
// 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
// Also available under a BSD-style license. See LICENSE.
//
//===----------------------------------------------------------------------===//
// This file is adapted from pytorch/pytorch
// https://github.com/pytorch/pytorch/blob/master/torch/csrc/lazy/ts_backend/ir_builder.h
//===----------------------------------------------------------------------===//

#pragma once

#include <torch/csrc/lazy/core/ir.h>
#include <torch/csrc/lazy/core/ir_builder.h>
#include <torch/csrc/lazy/core/shape_inference.h>

#include "dynamic_ir.h"
#include "generated/LazyNonNativeIr.h"
#include "mlir_node.h"
#include "ops/device_data.h"
#include "ops/generic.h"
#include "utils/exception.h"

// This file contains the TorchMlir IrBuilder

namespace torch {
namespace lazy {

// clang-format off

struct TorchMlirIrBuilder : IrBuilder {
  NodePtr MakeDeviceData(const std::shared_ptr<BackendData>& data) const override { return MakeNode<DeviceData>(data); }
  NodePtr MakeScalar(const at::Scalar& value, const at::ScalarType& type) const override { return MakeNode<Scalar>(value, type); }
  NodePtr MakeExpand(const Value& input0, const std::vector<int64_t>& size, const bool& is_scalar_expand) const override { return MakeNode<Expand>(input0, size, is_scalar_expand); }
  NodePtr MakeCast(const Value& input0, const at::ScalarType& dtype, const c10::optional<at::ScalarType>& stype = c10::nullopt) const override { return MakeNode<Cast>(input0, dtype, stype); }
  NodePtr MakeTensorList(const OpList& inputs) const override { return MakeNode<TorchMlirTensorList>(inputs); }
  NodePtr MakeGeneric(const OpKind& op, const OpList& operands, const Shape& shape, const size_t& num_outputs = 1, const hash_t& hash_seed = static_cast<uint32_t>(0x5a2d296e9)) const override { return MakeNode<Generic>(op, operands, shape, num_outputs, hash_seed); }

  // dynamic ir nodes
  NodePtr MakeSizeNode(const Value& input, size_t dim) const override { return MakeNode<SizeNode>(input, dim); }
  NodePtr MakeSizeAdd(const Value& a, const Value& b) const override { return MakeNode<SizeAdd>(a, b); }
  NodePtr MakeSizeMul(const Value& a, const Value& b) const override { return MakeNode<SizeMul>(a, b); }
  NodePtr MakeSizeDiv(const Value& a, const Value& b) const override { return MakeNode<SizeDiv>(a, b); }
};

// clang-format on

} // namespace lazy
} // namespace torch