Use.cpp

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/*
 * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * 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
 *
 *    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.
 */
 
#include "loco/IR/Use.h"
#include "loco/IR/Node.h"
 
#include <cassert>
 
namespace loco
{
 
void Use::node(Node *node)
{
  if (_node != nullptr)
  {
    assert(_node->_uses.find(this) != _node->_uses.end());
    _node->_uses.erase(this);
    _node = nullptr;
  }
 
  assert(_node == nullptr);
 
  if (node != nullptr)
  {
    _node = node;
    _node->_uses.insert(this);
  }
 
  assert(_node == node);
}
 
} // namespace loco