Mercurial > hg > truffle
annotate src/share/vm/utilities/utf8.hpp @ 14492:7f0e0366ec81
8035746: Add missing Klass::oop_is_instanceClassLoader() function
Reviewed-by: mgerdin, coleenp
author | stefank |
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date | Thu, 27 Feb 2014 10:36:50 +0100 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_UTILITIES_UTF8_HPP |
26 #define SHARE_VM_UTILITIES_UTF8_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 #include "utilities/top.hpp" | |
30 | |
0 | 31 // Low-level interface for UTF8 strings |
32 | |
33 class UTF8 : AllStatic { | |
34 public: | |
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35 // returns the unicode length of a 0-terminated utf8 string |
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36 static int unicode_length(const char* utf8_str); |
0 | 37 |
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38 // returns the unicode length of a non-0-terminated utf8 string |
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39 static int unicode_length(const char* utf8_str, int len); |
0 | 40 |
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41 // converts a utf8 string to a unicode string |
0 | 42 static void convert_to_unicode(const char* utf8_str, jchar* unicode_buffer, int unicode_length); |
43 | |
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44 // returns the quoted ascii length of a utf8 string |
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45 static int quoted_ascii_length(const char* utf8_str, int utf8_length); |
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46 |
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47 // converts a utf8 string to quoted ascii |
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48 static void as_quoted_ascii(const char* utf8_str, int utf8_length, char* buf, int buflen); |
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49 |
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50 // converts a quoted ascii string to utf8 string. returns the original |
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51 // string unchanged if nothing needs to be done. |
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52 static const char* from_quoted_ascii(const char* quoted_ascii_string); |
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53 |
0 | 54 // decodes the current utf8 character, stores the result in value, |
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55 // and returns the end of the current utf8 chararacter. |
0 | 56 static char* next(const char* str, jchar* value); |
57 | |
58 // decodes the current utf8 character, gets the supplementary character instead of | |
59 // the surrogate pair when seeing a supplementary character in string, | |
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60 // stores the result in value, and returns the end of the current utf8 chararacter. |
0 | 61 static char* next_character(const char* str, jint* value); |
62 | |
63 // Utility methods | |
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64 static const jbyte* strrchr(const jbyte* base, int length, jbyte c); |
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65 static bool equal(const jbyte* base1, int length1, const jbyte* base2,int length2); |
0 | 66 static bool is_supplementary_character(const unsigned char* str); |
67 static jint get_supplementary_character(const unsigned char* str); | |
68 }; | |
69 | |
70 | |
71 // Low-level interface for UNICODE strings | |
72 | |
73 // A unicode string represents a string in the UTF-16 format in which supplementary | |
74 // characters are represented by surrogate pairs. Index values refer to char code | |
75 // units, so a supplementary character uses two positions in a unicode string. | |
76 | |
77 class UNICODE : AllStatic { | |
78 public: | |
79 // returns the utf8 size of a unicode character | |
80 static int utf8_size(jchar c); | |
81 | |
82 // returns the utf8 length of a unicode string | |
83 static int utf8_length(jchar* base, int length); | |
84 | |
85 // converts a unicode string to utf8 string | |
86 static void convert_to_utf8(const jchar* base, int length, char* utf8_buffer); | |
87 | |
88 // converts a unicode string to a utf8 string; result is allocated | |
89 // in resource area unless a buffer is provided. | |
90 static char* as_utf8(jchar* base, int length); | |
91 static char* as_utf8(jchar* base, int length, char* buf, int buflen); | |
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92 |
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93 // returns the quoted ascii length of a unicode string |
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94 static int quoted_ascii_length(jchar* base, int length); |
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95 |
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96 // converts a utf8 string to quoted ascii |
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97 static void as_quoted_ascii(const jchar* base, int length, char* buf, int buflen); |
0 | 98 }; |
1972 | 99 |
100 #endif // SHARE_VM_UTILITIES_UTF8_HPP |