include/tenzr/sharding/shardy.h¶

// Copyright 2026 The Tenzr Project Authors
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef TENZR_SHARDING_SHARDY_H_
#define TENZR_SHARDING_SHARDY_H_

#include <string>
#include <string_view>
#include <vector>

#include "tenzr/common/export.h"
#include "tenzr/frontend/shape.h"
#include "tenzr/sharding/mesh.h"
#include "tenzr/sharding/named_sharding.h"
#include "tenzr/sharding/partition_spec.h"

namespace tenzr::sharding {

  struct TENZR_API ShardingAnalysis {
    std::string mesh_decl;

    std::string shardy_attr;

    std::string gspmd_attr;

    std::string shardy_constraint_op;

    bool is_replicated{false};

    bool is_unconstrained{false};

    [[nodiscard]] std::string FormatReport() const;
  };

  [[nodiscard]] TENZR_API ShardingAnalysis AnalyzeSharding(const NamedSharding& sharding, const Shape& tensor_shape, std::string_view var_name = "%0",
                                                           std::string_view tensor_type = "tensor<f32>");

  [[nodiscard]] TENZR_API std::string FormatShardyModuleHeader(const Mesh& mesh, std::string_view func_name, const std::vector<NamedSharding>& arg_shardings,
                                                               const std::vector<Shape>& arg_shapes, std::string_view mesh_sym = "mesh");

}  // namespace tenzr::sharding

#endif  // TENZR_SHARDING_SHARDY_H_