compare_positions.cc | Explore in Territory

/*
 * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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#include "third_party/blink/renderer/core/editing/editing_utilities.h"

#include "third_party/blink/renderer/core/editing/editing_strategy.h"
#include "third_party/blink/renderer/core/editing/visible_position.h"

namespace blink {

namespace {

constexpr int kInvalidOffset = …;

// The `Comparator` class implements `ComparePositions()` logic.
template <typename Traversal>
class Comparator { … };

}  // namespace

int16_t ComparePositionsInDOMTree(const Node* container_a,
                                  int offset_a,
                                  const Node* container_b,
                                  int offset_b,
                                  bool* disconnected) { … }

int16_t ComparePositionsInFlatTree(const Node* container_a,
                                   int offset_a,
                                   const Node* container_b,
                                   int offset_b,
                                   bool* disconnected) { … }

int16_t ComparePositions(const Position& position_a,
                         const Position& position_b) { … }

int16_t ComparePositions(const PositionWithAffinity& a,
                         const PositionWithAffinity& b) { … }

int16_t ComparePositions(const VisiblePosition& a, const VisiblePosition& b) { … }

int16_t ComparePositions(const PositionInFlatTree& position_a,
                         const PositionInFlatTree& position_b) { … }

}  // namespace blink
chromium/third_party/blink/renderer/core/editing/compare_positions.cc
