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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/thebes/gfxScriptItemizer.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/thebes/gfxScriptItemizer.h')
-rw-r--r-- | gfx/thebes/gfxScriptItemizer.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/gfx/thebes/gfxScriptItemizer.h b/gfx/thebes/gfxScriptItemizer.h new file mode 100644 index 0000000000..6deb37e19c --- /dev/null +++ b/gfx/thebes/gfxScriptItemizer.h @@ -0,0 +1,100 @@ +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * This file is based on usc_impl.c from ICU 4.2.0.1, slightly adapted + * for use within Mozilla Gecko, separate from a standard ICU build. + * + * The original ICU license of the code follows: + * + * ICU License - ICU 1.8.1 and later + * + * COPYRIGHT AND PERMISSION NOTICE + * + * Copyright (c) 1995-2009 International Business Machines Corporation and + * others + * + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, provided that the above copyright notice(s) and this + * permission notice appear in all copies of the Software and that both the + * above copyright notice(s) and this permission notice appear in supporting + * documentation. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE + * BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, + * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, + * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + * + * Except as contained in this notice, the name of a copyright holder shall + * not be used in advertising or otherwise to promote the sale, use or other + * dealings in this Software without prior written authorization of the + * copyright holder. + * + * All trademarks and registered trademarks mentioned herein are the property + * of their respective owners. + */ + +#ifndef GFX_SCRIPTITEMIZER_H +#define GFX_SCRIPTITEMIZER_H + +#include <stdint.h> +#include "mozilla/intl/UnicodeScriptCodes.h" + +#define PAREN_STACK_DEPTH 32 + +class gfxScriptItemizer { + public: + typedef mozilla::intl::Script Script; + + gfxScriptItemizer(const char16_t* src, uint32_t length); + + void SetText(const char16_t* src, uint32_t length); + + bool Next(uint32_t& aRunStart, uint32_t& aRunLimit, Script& aRunScript); + + protected: + void reset() { + scriptStart = 0; + scriptLimit = 0; + scriptCode = Script::INVALID; + parenSP = -1; + pushCount = 0; + fixupCount = 0; + } + + void push(uint32_t endPairChar, Script newScriptCode); + void pop(); + void fixup(Script newScriptCode); + + struct ParenStackEntry { + uint32_t endPairChar; + Script scriptCode; + }; + + const char16_t* textPtr; + uint32_t textLength; + + uint32_t scriptStart; + uint32_t scriptLimit; + Script scriptCode; + + struct ParenStackEntry parenStack[PAREN_STACK_DEPTH]; + uint32_t parenSP; + uint32_t pushCount; + uint32_t fixupCount; +}; + +#endif /* GFX_SCRIPTITEMIZER_H */ |