gfx/thebes/gfxScriptItemizer.h@b8a032363ba2 (annotated)
gfx/thebes/gfxScriptItemizer.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | /* |
| michael@0 | 7 | * This file is based on usc_impl.c from ICU 4.2.0.1, slightly adapted |
| michael@0 | 8 | * for use within Mozilla Gecko, separate from a standard ICU build. |
| michael@0 | 9 | * |
| michael@0 | 10 | * The original ICU license of the code follows: |
| michael@0 | 11 | * |
| michael@0 | 12 | * ICU License - ICU 1.8.1 and later |
| michael@0 | 13 | * |
| michael@0 | 14 | * COPYRIGHT AND PERMISSION NOTICE |
| michael@0 | 15 | * |
| michael@0 | 16 | * Copyright (c) 1995-2009 International Business Machines Corporation and |
| michael@0 | 17 | * others |
| michael@0 | 18 | * |
| michael@0 | 19 | * All rights reserved. |
| michael@0 | 20 | * |
| michael@0 | 21 | * Permission is hereby granted, free of charge, to any person obtaining a |
| michael@0 | 22 | * copy of this software and associated documentation files (the "Software"), |
| michael@0 | 23 | * to deal in the Software without restriction, including without limitation |
| michael@0 | 24 | * the rights to use, copy, modify, merge, publish, distribute, and/or sell |
| michael@0 | 25 | * copies of the Software, and to permit persons to whom the Software is |
| michael@0 | 26 | * furnished to do so, provided that the above copyright notice(s) and this |
| michael@0 | 27 | * permission notice appear in all copies of the Software and that both the |
| michael@0 | 28 | * above copyright notice(s) and this permission notice appear in supporting |
| michael@0 | 29 | * documentation. |
| michael@0 | 30 | * |
| michael@0 | 31 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| michael@0 | 32 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| michael@0 | 33 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
| michael@0 | 34 | * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE |
| michael@0 | 35 | * BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, |
| michael@0 | 36 | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| michael@0 | 37 | * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
| michael@0 | 38 | * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| michael@0 | 39 | * SOFTWARE. |
| michael@0 | 40 | * |
| michael@0 | 41 | * Except as contained in this notice, the name of a copyright holder shall |
| michael@0 | 42 | * not be used in advertising or otherwise to promote the sale, use or other |
| michael@0 | 43 | * dealings in this Software without prior written authorization of the |
| michael@0 | 44 | * copyright holder. |
| michael@0 | 45 | * |
| michael@0 | 46 | * All trademarks and registered trademarks mentioned herein are the property |
| michael@0 | 47 | * of their respective owners. |
| michael@0 | 48 | */ |
| michael@0 | 49 | |
| michael@0 | 50 | #ifndef GFX_SCRIPTITEMIZER_H |
| michael@0 | 51 | #define GFX_SCRIPTITEMIZER_H |
| michael@0 | 52 | |
| michael@0 | 53 | #include <stdint.h> |
| michael@0 | 54 | #include "nsUnicodeScriptCodes.h" |
| michael@0 | 55 | |
| michael@0 | 56 | #define PAREN_STACK_DEPTH 32 |
| michael@0 | 57 | |
| michael@0 | 58 | class gfxScriptItemizer |
| michael@0 | 59 | { |
| michael@0 | 60 | public: |
| michael@0 | 61 | gfxScriptItemizer(const char16_t *src, uint32_t length); |
| michael@0 | 62 | |
| michael@0 | 63 | void SetText(const char16_t *src, uint32_t length); |
| michael@0 | 64 | |
| michael@0 | 65 | bool Next(uint32_t& aRunStart, uint32_t& aRunLimit, |
| michael@0 | 66 | int32_t& aRunScript); |
| michael@0 | 67 | |
| michael@0 | 68 | protected: |
| michael@0 | 69 | void reset() { |
| michael@0 | 70 | scriptStart = 0; |
| michael@0 | 71 | scriptLimit = 0; |
| michael@0 | 72 | scriptCode = MOZ_SCRIPT_INVALID; |
| michael@0 | 73 | parenSP = -1; |
| michael@0 | 74 | pushCount = 0; |
| michael@0 | 75 | fixupCount = 0; |
| michael@0 | 76 | } |
| michael@0 | 77 | |
| michael@0 | 78 | void push(uint32_t endPairChar, int32_t scriptCode); |
| michael@0 | 79 | void pop(); |
| michael@0 | 80 | void fixup(int32_t scriptCode); |
| michael@0 | 81 | |
| michael@0 | 82 | struct ParenStackEntry { |
| michael@0 | 83 | uint32_t endPairChar; |
| michael@0 | 84 | int32_t scriptCode; |
| michael@0 | 85 | }; |
| michael@0 | 86 | |
| michael@0 | 87 | const char16_t *textPtr; |
| michael@0 | 88 | uint32_t textLength; |
| michael@0 | 89 | |
| michael@0 | 90 | uint32_t scriptStart; |
| michael@0 | 91 | uint32_t scriptLimit; |
| michael@0 | 92 | int32_t scriptCode; |
| michael@0 | 93 | |
| michael@0 | 94 | struct ParenStackEntry parenStack[PAREN_STACK_DEPTH]; |
| michael@0 | 95 | uint32_t parenSP; |
| michael@0 | 96 | uint32_t pushCount; |
| michael@0 | 97 | uint32_t fixupCount; |
| michael@0 | 98 | }; |
| michael@0 | 99 | |
| michael@0 | 100 | #endif /* GFX_SCRIPTITEMIZER_H */ |
