/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 * Copyright (C) 2017 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
 * OWNER 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,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "WritingMode.h"
#include <wtf/text/WTFString.h>

namespace WebCore {

// In some circumstances we want to store a String along with the TextDirection
// of the String as learned from the context of the String. For example,
// consider storing the title derived from <title dir='rtl'>some title</title>
// in the history.
//
// Note that is explicitly *not* the direction of the string as learned
// from the characters of the string; it's extra metadata we have external
// to the string.

struct StringWithDirection {
#if !COMPILER_SUPPORTS(NSDMI_FOR_AGGREGATES)
    StringWithDirection() = default;
    StringWithDirection(String string, TextDirection direction)
        : string { WTFMove(string) }
        , direction { direction }
    {
    }
#endif
    String string;
    TextDirection direction { LTR };
};

inline bool operator==(const StringWithDirection& a, const StringWithDirection& b)
{
    return a.string == b.string && a.direction == b.direction;
}

inline bool operator!=(const StringWithDirection& a, const StringWithDirection& b)
{
    return !(a == b);
}

inline StringWithDirection truncateFromEnd(const StringWithDirection& string, unsigned maxLength)
{
    return { string.string.left(maxLength), string.direction };
}

}