/* * 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, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * 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 { String string; TextDirection direction { TextDirection::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 }; } }