2014-04-11 Marc Glisse <marc.glisse@inria.fr>
[official-gcc.git] / libjava / scripts / MakeCharTables.java
blobd9db129cf151d2e26b86f6ecb0fc29b923ad276f
1 /* MakeCharTables.java - converts gnu.java.lang.CharData into
2 include/java-chartables.h
3 Copyright (C) 2002 Free Software Foundation, Inc.
5 This file is part of GNU Classpath.
7 GNU Classpath is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
12 GNU Classpath is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Classpath; see the file COPYING. If not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 02110-1301 USA.
22 Linking this library statically or dynamically with other modules is
23 making a combined work based on this library. Thus, the terms and
24 conditions of the GNU General Public License cover the whole
25 combination.
27 As a special exception, the copyright holders of this library give you
28 permission to link this library with independent modules to produce an
29 executable, regardless of the license terms of these independent
30 modules, and to copy and distribute the resulting executable under
31 terms of your choice, provided that you also meet, for each linked
32 independent module, the terms and conditions of the license of that
33 module. An independent module is a module which is not derived from
34 or based on this library. If you modify this library, you may extend
35 this exception to your version of the library, but you are not
36 obligated to do so. If you do not wish to do so, delete this
37 exception statement from your version. */
39 import gnu.java.lang.CharData;
41 public class MakeCharTables implements CharData
43 public static void main(String[] args)
45 System.out.println("/* java-chartables.h -- Character tables for java.lang.Character -*- c++ -*-\n"
46 + " Copyright (C) 2002 Free Software Foundation, Inc.\n"
47 + " *** This file is generated by scripts/MakeCharTables.java ***\n"
48 + "\n"
49 + "This file is part of GNU Classpath.\n"
50 + "\n"
51 + "GNU Classpath is free software; you can redistribute it and/or modify\n"
52 + "it under the terms of the GNU General Public License as published by\n"
53 + "the Free Software Foundation; either version 2, or (at your option)\n"
54 + "any later version.\n"
55 + "\n"
56 + "GNU Classpath is distributed in the hope that it will be useful, but\n"
57 + "WITHOUT ANY WARRANTY; without even the implied warranty of\n"
58 + "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
59 + "General Public License for more details.\n"
60 + "\n"
61 + "You should have received a copy of the GNU General Public License\n"
62 + "along with GNU Classpath; see the file COPYING. If not, write to the\n"
63 + "Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA\n"
64 + "02110-1301 USA.\n"
65 + "\n"
66 + "Linking this library statically or dynamically with other modules is\n"
67 + "making a combined work based on this library. Thus, the terms and\n"
68 + "conditions of the GNU General Public License cover the whole\n"
69 + "combination.\n"
70 + "\n"
71 + "As a special exception, the copyright holders of this library give you\n"
72 + "permission to link this library with independent modules to produce an\n"
73 + "executable, regardless of the license terms of these independent\n"
74 + "modules, and to copy and distribute the resulting executable under\n"
75 + "terms of your choice, provided that you also meet, for each linked\n"
76 + "independent module, the terms and conditions of the license of that\n"
77 + "module. An independent module is a module which is not derived from\n"
78 + "or based on this library. If you modify this library, you may extend\n"
79 + "this exception to your version of the library, but you are not\n"
80 + "obligated to do so. If you do not wish to do so, delete this\n"
81 + "exception statement from your version. */\n"
82 + "\n"
83 + "#ifndef __JAVA_CHARTABLES_H__\n"
84 + "#define __JAVA_CHARTABLES_H__\n"
85 + "\n"
86 + "// These tables are automatically generated by scripts/MakeCharTables.java.\n"
87 + "// This is in turn parsing gnu.java.lang.CharData, which is generated by\n"
88 + "// scripts/unicode-muncher.pl. The Unicode data comes from\n"
89 + "// www.unicode.org; this header is based on\n"
90 + "// " + SOURCE + ". JDK 1.4 uses Unicode version 3.0.0.\n"
91 + "// DO NOT EDIT the tables. Instead, fix the upstream scripts and run\n"
92 + "// them again.\n"
93 + "\n"
94 + "// The data is stored in C style arrays of the appropriate CNI types, to\n"
95 + "// guarantee that the data is constant and non-relocatable. The field\n"
96 + "// <code>blocks</code> stores the offset of a block of 2<supSHIFT</sup>\n"
97 + "// characters within <code>data</code>. The data field, in turn, stores\n"
98 + "// information about each character in the low order bits, and an offset\n"
99 + "// into the attribute tables <code>upper</code>, <code>lower</code>,\n"
100 + "// <code>numValue</code>, and <code>direction</code>. Notice that the\n"
101 + "// attribute tables are much smaller than 0xffff entries; as many characters\n"
102 + "// in Unicode share common attributes. Finally, there is a listing for\n"
103 + "// <code>title</code> exceptions (most characters just have the same title\n"
104 + "// case as upper case).\n"
105 + "\n"
106 + "// This file should only be included by natCharacter.cc\n"
107 + "\n"
108 + "/**\n"
109 + " * The character shift amount to look up the block offset. In other words,\n"
110 + " * <code>(char) (blocks[ch >> SHIFT] + ch)</code> is the index where\n"
111 + " * <code>ch</code> is described in <code>data</code>.\n"
112 + " */\n"
113 + "#define SHIFT " + SHIFT);
115 convertString("/**\n"
116 + " * The mapping of character blocks to their location in <code>data</code>.\n"
117 + " * Each entry has been adjusted so that a modulo 16 sum with the desired\n"
118 + " * character gives the actual index into <code>data</code>.\n"
119 + " */",
120 char.class, "blocks", BLOCKS);
122 convertString("/**\n"
123 + " * Information about each character. The low order 5 bits form the\n"
124 + " * character type, the next bit is a flag for non-breaking spaces, and the\n"
125 + " * next bit is a flag for mirrored directionality. The high order 9 bits\n"
126 + " * form the offset into the attribute tables. Note that this limits the\n"
127 + " * number of unique character attributes to 512, which is not a problem\n"
128 + " * as of Unicode version 3.2.0, but may soon become one.\n"
129 + " */",
130 char.class, "data", DATA);
132 convertString("/**\n"
133 + " * This is the attribute table for computing the numeric value of a\n"
134 + " * character. The value is -1 if Unicode does not define a value, -2\n"
135 + " * if the value is not a positive integer, otherwise it is the value.\n"
136 + " */",
137 short.class, "numValue", NUM_VALUE);
139 convertString("/**\n"
140 + " * This is the attribute table for computing the uppercase representation\n"
141 + " * of a character. The value is the difference between the character and\n"
142 + " * its uppercase version.\n"
143 + " */",
144 short.class, "upper", UPPER);
146 convertString("/**\n"
147 + " * This is the attribute table for computing the lowercase representation\n"
148 + " * of a character. The value is the difference between the character and\n"
149 + " * its lowercase version.\n"
150 + " */",
151 short.class, "lower", LOWER);
153 convertString("/**\n"
154 + " * This is the attribute table for computing the directionality class\n"
155 + " * of a character. At present, the value is in the range 0 - 18 if the\n"
156 + " * character has a direction, otherwise it is -1.\n"
157 + " */",
158 byte.class, "direction", DIRECTION);
160 convertString("/**\n"
161 + " * This is the listing of titlecase special cases (all other character\n"
162 + " * can use <code>upper</code> to determine their titlecase). The listing\n"
163 + " * is a sequence of character pairs; converting the first character of the\n"
164 + " * pair to titlecase produces the second character.\n"
165 + " */",
166 char.class, "title", TITLE);
168 System.out.println();
169 System.out.println("#endif /* __JAVA_CHARTABLES_H__ */");
172 private static void convertString(String header, Class type,
173 String name, String field)
175 System.out.println();
176 System.out.println(header);
177 System.out.println("static const j" + type.getName() + " " + name
178 + "[] = {");
179 char[] data = field.toCharArray();
180 int wrap;
181 if (type == char.class)
182 wrap = 10;
183 else if (type == byte.class)
184 wrap = 21;
185 else if (type == short.class)
186 wrap = 13;
187 else
188 throw new Error("Unexpeced type");
189 for (int i = 0; i < data.length; i += wrap)
191 System.out.print(" ");
192 for (int j = 0; j < wrap; j++)
194 if (i + j >= data.length)
195 break;
196 System.out.print(" ");
197 if (type == char.class)
198 System.out.print((int) data[i + j]);
199 else if (type == byte.class)
200 System.out.print((byte) data[i + j]);
201 else if (type == short.class)
202 System.out.print((short) data[i + j]);
203 System.out.print(",");
205 System.out.println();
207 System.out.println(" };\n"
208 + "/** Length of " + name + ". */\n"
209 + "static const int " + name + "_length = "
210 + data.length + ";");