Program Listing for File unique_name_supply.h

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   http://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.
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#ifndef TVM_IR_UNIQUE_NAME_SUPPLY_H_
#define TVM_IR_UNIQUE_NAME_SUPPLY_H_

#include <tvm/ffi/reflection/registry.h>
#include <tvm/ir/expr.h>

#include <cstdint>
#include <string>
#include <utility>

namespace tvm {

class UniqueNameSupplyObj : public ffi::Object {
 public:
  UniqueNameSupplyObj() = default;

  UniqueNameSupplyObj(const ffi::String& prefix, ffi::Map<ffi::String, int64_t> name_map)
      : prefix_(prefix), name_map(std::move(name_map)) {}

  TVM_TIRX_DLL ffi::String FreshName(const ffi::String& name, bool add_prefix = true,
                                     bool add_underscore = true);

  TVM_TIRX_DLL ffi::String ReserveName(const ffi::String& name, bool add_prefix = true);

  TVM_TIRX_DLL bool ContainsName(const ffi::String& name, bool add_prefix = true);

  // Prefix for all GlobalVar names. It can be empty.
  std::string prefix_;

  static constexpr const bool _type_mutable = true;

  static void RegisterReflection() {
    namespace refl = tvm::ffi::reflection;
    refl::ObjectDef<UniqueNameSupplyObj>();
  }

  TVM_FFI_DECLARE_OBJECT_INFO_FINAL("ir.UniqueNameSupply", UniqueNameSupplyObj, ffi::Object);

 private:
  ffi::String AddPrefixToName(const ffi::String& name);

  std::string GetUniqueName(std::string name, bool add_underscore = true);

  ffi::Map<ffi::String, int64_t> name_map;
};

class UniqueNameSupply : public ffi::ObjectRef {
 public:
  TVM_TIRX_DLL explicit UniqueNameSupply(const ffi::String& prefix = "",
                                         ffi::Map<ffi::String, int64_t> name_map = {});

  template <typename Iter, typename Lambda>
  UniqueNameSupply(Iter begin, Iter end, Lambda f) : UniqueNameSupply("") {
    for (auto it = begin; it != end; ++it) {
      this->operator->()->ReserveName(f(*it), false);
    }
  }

  TVM_FFI_DEFINE_OBJECT_REF_METHODS_NOTNULLABLE(UniqueNameSupply, ffi::ObjectRef,
                                                UniqueNameSupplyObj);
};

}  // namespace tvm

#endif  // TVM_IR_UNIQUE_NAME_SUPPLY_H_