chromium/third_party/pdfium/core/fxcrt/tree_node.h

// Copyright 2019 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CORE_FXCRT_TREE_NODE_H_
#define CORE_FXCRT_TREE_NODE_H_

#include <stdint.h>

#include "core/fxcrt/check.h"
#include "core/fxcrt/unowned_ptr_exclusion.h"

namespace fxcrt {

// Implements the usual DOM/XML-ish trees allowing for a variety of
// pointer types with which to connect the nodes. Public methods maintain
// the invariants of the tree.

template <typename T>
class TreeNodeBase { … };

// Tree connected using C-style pointers.
template <typename T>
class TreeNode : public TreeNodeBase<T> { … };

}  // namespace fxcrt

TreeNode;

#endif  // CORE_FXCRT_TREE_NODE_H_