Line data Source code
1 : /*
2 : *******************************************************************************
3 : *
4 : * Copyright (c) 1995-2013 International Business Machines Corporation and others
5 : *
6 : * All rights reserved.
7 : *
8 : * Permission is hereby granted, free of charge, to any person obtaining a copy of
9 : * this software and associated documentation files (the "Software"), to deal in
10 : * the Software without restriction, including without limitation the rights to
11 : * use, copy, modify, merge, publish, distribute, and/or sell copies of the
12 : * Software, and to permit persons to whom the Software is furnished to do so,
13 : * provided that the above copyright notice(s) and this permission notice appear
14 : * in all copies of the Software and that both the above copyright notice(s) and
15 : * this permission notice appear in supporting documentation.
16 : *
17 : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 : * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN
20 : * NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE
21 : * LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY
22 : * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
23 : * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
24 : * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 : *
26 : * Except as contained in this notice, the name of a copyright holder shall not be
27 : * used in advertising or otherwise to promote the sale, use or other dealings in
28 : * this Software without prior written authorization of the copyright holder.
29 : *
30 : *******************************************************************************
31 : * file name: scrptrun.h
32 : *
33 : * created on: 10/17/2001
34 : * created by: Eric R. Mader
35 : */
36 :
37 : #ifndef INCLUDED_VCL_GENERIC_GLYPHS_SCRPTRUN_H
38 : #define INCLUDED_VCL_GENERIC_GLYPHS_SCRPTRUN_H
39 :
40 : #include <sal/config.h>
41 :
42 : #include <sal/types.h>
43 : #include "unicode/utypes.h"
44 : #include "unicode/uobject.h"
45 : #include "unicode/uscript.h"
46 :
47 : namespace vcl {
48 :
49 : struct ScriptRecord
50 : {
51 : UChar32 startChar;
52 : UChar32 endChar;
53 : UScriptCode scriptCode;
54 : };
55 :
56 : struct ParenStackEntry
57 : {
58 : int32_t pairIndex;
59 : UScriptCode scriptCode;
60 276015744 : ParenStackEntry()
61 : : pairIndex(0)
62 276015744 : , scriptCode(USCRIPT_INVALID_CODE)
63 : {
64 276015744 : }
65 : };
66 :
67 2156373 : class ScriptRun : public UObject {
68 : public:
69 : ScriptRun();
70 :
71 : ScriptRun(const UChar chars[], int32_t length);
72 :
73 : ScriptRun(const UChar chars[], int32_t start, int32_t length);
74 :
75 : void reset();
76 :
77 : void reset(int32_t start, int32_t count);
78 :
79 : void reset(const UChar chars[], int32_t start, int32_t length);
80 :
81 : int32_t getScriptStart();
82 :
83 : int32_t getScriptEnd();
84 :
85 : UScriptCode getScriptCode();
86 :
87 : UBool next();
88 :
89 : /**
90 : * ICU "poor man's RTTI", returns a UClassID for the actual class.
91 : *
92 : * @stable ICU 2.2
93 : */
94 0 : virtual inline UClassID getDynamicClassID() const SAL_OVERRIDE { return getStaticClassID(); }
95 :
96 : /**
97 : * ICU "poor man's RTTI", returns a UClassID for this class.
98 : *
99 : * @stable ICU 2.2
100 : */
101 0 : static inline UClassID getStaticClassID() { return (UClassID)&fgClassID; }
102 :
103 : private:
104 :
105 : static UBool sameScript(int32_t scriptOne, int32_t scriptTwo);
106 :
107 : int32_t charStart;
108 : int32_t charLimit;
109 : const UChar *charArray;
110 :
111 : int32_t scriptStart;
112 : int32_t scriptEnd;
113 : UScriptCode scriptCode;
114 :
115 : ParenStackEntry parenStack[128];
116 : int32_t parenSP;
117 :
118 : static int8_t highBit(int32_t value);
119 : static int32_t getPairIndex(UChar32 ch);
120 :
121 : static UChar32 pairedChars[];
122 : static const int32_t pairedCharCount;
123 : static const int32_t pairedCharPower;
124 : static const int32_t pairedCharExtra;
125 :
126 : /**
127 : * The address of this static class variable serves as this class's ID
128 : * for ICU "poor man's RTTI".
129 : */
130 : static const char fgClassID;
131 : };
132 :
133 : inline ScriptRun::ScriptRun()
134 : {
135 : reset(NULL, 0, 0);
136 : }
137 :
138 2156373 : inline ScriptRun::ScriptRun(const UChar chars[], int32_t length)
139 : {
140 2156373 : reset(chars, 0, length);
141 2156373 : }
142 :
143 : inline ScriptRun::ScriptRun(const UChar chars[], int32_t start, int32_t length)
144 : {
145 : reset(chars, start, length);
146 : }
147 :
148 2140328 : inline int32_t ScriptRun::getScriptStart()
149 : {
150 2140328 : return scriptStart;
151 : }
152 :
153 4280578 : inline int32_t ScriptRun::getScriptEnd()
154 : {
155 4280578 : return scriptEnd;
156 : }
157 :
158 2140250 : inline UScriptCode ScriptRun::getScriptCode()
159 : {
160 2140250 : return scriptCode;
161 : }
162 :
163 4296109 : inline void ScriptRun::reset()
164 : {
165 4296109 : scriptStart = charStart;
166 4296109 : scriptEnd = charStart;
167 4296109 : scriptCode = USCRIPT_INVALID_CODE;
168 4296109 : parenSP = -1;
169 4296109 : }
170 :
171 2156373 : inline void ScriptRun::reset(int32_t start, int32_t length)
172 : {
173 2156373 : charStart = start;
174 2156373 : charLimit = start + length;
175 :
176 2156373 : reset();
177 2156373 : }
178 :
179 2156373 : inline void ScriptRun::reset(const UChar chars[], int32_t start, int32_t length)
180 : {
181 2156373 : charArray = chars;
182 :
183 2156373 : reset(start, length);
184 2156373 : }
185 :
186 : }
187 :
188 : #endif
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