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src/share/vm/utilities/utf8.hpp@c6211b707068 (annotated)

src/share/vm/utilities/utf8.hpp

Tue, 19 Aug 2014 08:34:25 -0400

author

zgu

date

Tue, 19 Aug 2014 08:34:25 -0400

changeset 7078

c6211b707068

parent 4851

8c03fc47511d

child 6876

710a3c8b516e

permissions

-rw-r--r--

8055007: NMT2: emptyStack missing in minimal build
Summary: Refactored emptyStack to a static member of NativeCallStack, which is accessible in minimal build.
Reviewed-by: coleenp, dholmes

duke@435	1	/*
iklam@4851	2	* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_UTILITIES_UTF8_HPP
stefank@2314	26	#define SHARE_VM_UTILITIES_UTF8_HPP
stefank@2314	27
stefank@2314	28	#include "memory/allocation.hpp"
stefank@2314	29	#include "utilities/top.hpp"
stefank@2314	30
duke@435	31	// Low-level interface for UTF8 strings
duke@435	32
duke@435	33	class UTF8 : AllStatic {
duke@435	34	public:
minqi@4267	35	// returns the unicode length of a 0-terminated utf8 string
minqi@4267	36	static int unicode_length(const char* utf8_str);
duke@435	37
minqi@4267	38	// returns the unicode length of a non-0-terminated utf8 string
minqi@4267	39	static int unicode_length(const char* utf8_str, int len);
duke@435	40
minqi@4267	41	// converts a utf8 string to a unicode string
duke@435	42	static void convert_to_unicode(const char* utf8_str, jchar* unicode_buffer, int unicode_length);
duke@435	43
minqi@4267	44	// returns the quoted ascii length of a utf8 string
minqi@4267	45	static int quoted_ascii_length(const char* utf8_str, int utf8_length);
minqi@4267	46
minqi@4267	47	// converts a utf8 string to quoted ascii
iklam@4851	48	static void as_quoted_ascii(const char* utf8_str, int utf8_length, char* buf, int buflen);
minqi@4267	49
minqi@4267	50	// converts a quoted ascii string to utf8 string. returns the original
minqi@4267	51	// string unchanged if nothing needs to be done.
minqi@4267	52	static const char* from_quoted_ascii(const char* quoted_ascii_string);
minqi@4267	53
duke@435	54	// decodes the current utf8 character, stores the result in value,
minqi@4267	55	// and returns the end of the current utf8 chararacter.
duke@435	56	static char* next(const char* str, jchar* value);
duke@435	57
duke@435	58	// decodes the current utf8 character, gets the supplementary character instead of
duke@435	59	// the surrogate pair when seeing a supplementary character in string,
minqi@4267	60	// stores the result in value, and returns the end of the current utf8 chararacter.
duke@435	61	static char* next_character(const char* str, jint* value);
duke@435	62
duke@435	63	// Utility methods
coleenp@2497	64	static const jbyte* strrchr(const jbyte* base, int length, jbyte c);
coleenp@2497	65	static bool equal(const jbyte* base1, int length1, const jbyte* base2,int length2);
duke@435	66	static bool is_supplementary_character(const unsigned char* str);
duke@435	67	static jint get_supplementary_character(const unsigned char* str);
duke@435	68	};
duke@435	69
duke@435	70
duke@435	71	// Low-level interface for UNICODE strings
duke@435	72
duke@435	73	// A unicode string represents a string in the UTF-16 format in which supplementary
duke@435	74	// characters are represented by surrogate pairs. Index values refer to char code
duke@435	75	// units, so a supplementary character uses two positions in a unicode string.
duke@435	76
duke@435	77	class UNICODE : AllStatic {
duke@435	78	public:
duke@435	79	// returns the utf8 size of a unicode character
duke@435	80	static int utf8_size(jchar c);
duke@435	81
duke@435	82	// returns the utf8 length of a unicode string
duke@435	83	static int utf8_length(jchar* base, int length);
duke@435	84
duke@435	85	// converts a unicode string to utf8 string
duke@435	86	static void convert_to_utf8(const jchar* base, int length, char* utf8_buffer);
duke@435	87
duke@435	88	// converts a unicode string to a utf8 string; result is allocated
duke@435	89	// in resource area unless a buffer is provided.
duke@435	90	static char* as_utf8(jchar* base, int length);
duke@435	91	static char* as_utf8(jchar* base, int length, char* buf, int buflen);
minqi@4267	92
minqi@4267	93	// returns the quoted ascii length of a unicode string
minqi@4267	94	static int quoted_ascii_length(jchar* base, int length);
minqi@4267	95
minqi@4267	96	// converts a utf8 string to quoted ascii
minqi@4267	97	static void as_quoted_ascii(const jchar* base, int length, char* buf, int buflen);
duke@435	98	};
stefank@2314	99
stefank@2314	100	#endif // SHARE_VM_UTILITIES_UTF8_HPP