1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxScriptItemizer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,100 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/*
1.10 + * This file is based on usc_impl.c from ICU 4.2.0.1, slightly adapted
1.11 + * for use within Mozilla Gecko, separate from a standard ICU build.
1.12 + *
1.13 + * The original ICU license of the code follows:
1.14 + *
1.15 + * ICU License - ICU 1.8.1 and later
1.16 + *
1.17 + * COPYRIGHT AND PERMISSION NOTICE
1.18 + *
1.19 + * Copyright (c) 1995-2009 International Business Machines Corporation and
1.20 + * others
1.21 + *
1.22 + * All rights reserved.
1.23 + *
1.24 + * Permission is hereby granted, free of charge, to any person obtaining a
1.25 + * copy of this software and associated documentation files (the "Software"),
1.26 + * to deal in the Software without restriction, including without limitation
1.27 + * the rights to use, copy, modify, merge, publish, distribute, and/or sell
1.28 + * copies of the Software, and to permit persons to whom the Software is
1.29 + * furnished to do so, provided that the above copyright notice(s) and this
1.30 + * permission notice appear in all copies of the Software and that both the
1.31 + * above copyright notice(s) and this permission notice appear in supporting
1.32 + * documentation.
1.33 + *
1.34 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
1.35 + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
1.36 + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
1.37 + * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE
1.38 + * BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES,
1.39 + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
1.40 + * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
1.41 + * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
1.42 + * SOFTWARE.
1.43 + *
1.44 + * Except as contained in this notice, the name of a copyright holder shall
1.45 + * not be used in advertising or otherwise to promote the sale, use or other
1.46 + * dealings in this Software without prior written authorization of the
1.47 + * copyright holder.
1.48 + *
1.49 + * All trademarks and registered trademarks mentioned herein are the property
1.50 + * of their respective owners.
1.51 + */
1.52 +
1.53 +#ifndef GFX_SCRIPTITEMIZER_H
1.54 +#define GFX_SCRIPTITEMIZER_H
1.55 +
1.56 +#include <stdint.h>
1.57 +#include "nsUnicodeScriptCodes.h"
1.58 +
1.59 +#define PAREN_STACK_DEPTH 32
1.60 +
1.61 +class gfxScriptItemizer
1.62 +{
1.63 +public:
1.64 + gfxScriptItemizer(const char16_t *src, uint32_t length);
1.65 +
1.66 + void SetText(const char16_t *src, uint32_t length);
1.67 +
1.68 + bool Next(uint32_t& aRunStart, uint32_t& aRunLimit,
1.69 + int32_t& aRunScript);
1.70 +
1.71 +protected:
1.72 + void reset() {
1.73 + scriptStart = 0;
1.74 + scriptLimit = 0;
1.75 + scriptCode = MOZ_SCRIPT_INVALID;
1.76 + parenSP = -1;
1.77 + pushCount = 0;
1.78 + fixupCount = 0;
1.79 + }
1.80 +
1.81 + void push(uint32_t endPairChar, int32_t scriptCode);
1.82 + void pop();
1.83 + void fixup(int32_t scriptCode);
1.84 +
1.85 + struct ParenStackEntry {
1.86 + uint32_t endPairChar;
1.87 + int32_t scriptCode;
1.88 + };
1.89 +
1.90 + const char16_t *textPtr;
1.91 + uint32_t textLength;
1.92 +
1.93 + uint32_t scriptStart;
1.94 + uint32_t scriptLimit;
1.95 + int32_t scriptCode;
1.96 +
1.97 + struct ParenStackEntry parenStack[PAREN_STACK_DEPTH];
1.98 + uint32_t parenSP;
1.99 + uint32_t pushCount;
1.100 + uint32_t fixupCount;
1.101 +};
1.102 +
1.103 +#endif /* GFX_SCRIPTITEMIZER_H */
