[ViewVC] Annotation of: cvs/JSON-XS/Changes

Revision history for Perl extension JSON::XS

TODO: maybe detetc and croak on more invalid inputs (e.g. +-inf/nan)
TODO: maybe avoid the reblessing and better support readonly objects.
TODO: http://stevehanov.ca/blog/index.php?id=104 compression

TODO: how to cope with tagged values and standard json decoders
TODO: work around <=5.16 bugs (Reini Urban)
3.01 Tue Oct 29 16:55:15 CET 2013
        - backport to perls < 5.18 (reported by Paul Howarth).

3.0  Tue Oct 29 01:35:37 CET 2013
        - implemented an object tagging extension (using the
          Types::Serialiser serialisation protocol).
        - reworked the documentation regarding object serialisation,
          add a new OBJECT SERIALISATION section that explains the
          whole process.
        - new setting: allow_tags.
        - switch to Types::Serialiser booleans.
        - remove to_json/from_json.
        - other minor improvements to the documentation.

2.34 Thu May 23 11:30:34 CEST 2013
        - work around bugs in perl 5.18 breaking more than 100
          widely used modules, without a fix in sight because
          p5pers don't care about CPAN anymore.
        - when canonicalising, only allocate up to 64 hash key
          pointers on the stack. for larger hashes, use the heap,
          to avoid using too much stackspace.
        - discuss the problem with setlocale (reported by a few victims).

2.33 Wed Aug  1 21:03:52 CEST 2012
        - internal encode/decode XS wrappers did not expect stack
          moves caused by callbacks (analyzed and testcase by Jesse Luehrs).
        - add bencode as to/from option in bin/json_xs.
        - add -e option to json_xs, and none and string in/out formats.

2.32 Thu Aug 11 19:06:38 CEST 2011
        - fix a bug in the initial whitespace accumulation.

2.31 Wed Jul 27 17:53:05 CEST 2011
        - don't accumulate initial whitespace in the incremental buffer
          (this can be useful to allow whitespace-keepalive on a tcp
          connection without triggering the max_size limit).
        - properly croak on some invalid inputs that are not strings
          (e.g. undef) when trying to decode a json text (reported
          and analyzed by Goro Fuji).

2.3   Wed Aug 18 01:26:47 CEST 2010
        - make sure decoder doesn't change the decoding in the incremental
          parser (testcase provided by Hendrik Schumacher).
        - applied patch by DaTa for Data::Dumper support in json_xs.
        - added -t dump support to json_xs, using Data::Dump.
        - added -f eval support to json_xs.

2.29  Wed Mar 17 02:39:12 CET 2010
        - fix a memory leak when callbacks set using filter_json_object
          or filter_json_single_key_object were called (great testcase
          by Eric Wilhelm).

2.28  Thu Mar 11 20:30:46 CET 2010
        - implement our own atof function - perl's can be orders of
          magnitudes slower than even the system one. on the positive
          side, ours seems to be more exact in general than perl's.
          (testcase provided by Tim Meadowcroft).
        - clarify floating point conversion issues a bit.
        - update jpsykes csrf article url.
        - updated benchmark section - JSON::PP became much faster!

2.27  Thu Jan  7 07:35:08 CET 2010
        - support relaxed option inside the incremental parser
          (testcase provided by IKEGAMI via Makamaka).

2.26  Sat Oct 10 03:26:19 CEST 2009
        - big integers could become truncated (based on patch
          by Strobl Anton).
        - output format change: indent now adds a final newline, which is
          more expected and more true to the documentation.

2.25  Sat Aug  8 12:04:41 CEST 2009
        - the perl debugger completely breaks lvalue subs - try to work
          around the issue.
        - ignore RMAGICAL hashes w.r.t. CANONICAL.
        - try to work around a possible char signedness issue on aix.
        - require common sense.

2.24  Sat May 30 08:25:45 CEST 2009
        - the incremental parser did not update its parse offset
          pointer correctly when parsing utf8-strings (nicely
          debugged by Martin Evans).
        - appending a non-utf8-string to the incremental parser
          in utf8 mode failed to upgrade the string.
        - wording of parse error messages has been improved.

2.232 Sun Feb 22 11:12:25 CET 2009
        - use an exponential algorithm to extend strings, to
          help platforms with bad or abysmal==windows memory
          allocater performance, at the expense of some memory
          wastage (use shrink to recover this extra memory).
          (nicely analysed by Dmitry Karasik).

2.2311 Thu Feb 19 02:12:54 CET 2009
        - add a section "JSON and ECMAscript" to explain some
          incompatibilities between the two (problem was noted by
          various people).
        - add t/20_faihu.t.

2.231 Thu Nov 20 04:59:08 CET 2008
        - work around 5.10.0 magic bugs where manipulating magic values
          (such as $1) would permanently damage them as perl would
          ignore the magicalness, by making a full copy of the string,
          reported by Dmitry Karasik.
        - work around spurious warnings under older perl 5.8's.

2.23 Mon Sep 29 05:08:29 CEST 2008
        - fix a compilation problem when perl is not using char * as, well,
          char *.
        - use PL_hexdigit in favour of rolling our own.

2.2222 Sun Jul 20 18:49:00 CEST 2008
        - same game again, broken 5.10 finds yet another assertion
          failure, and the workaround causes additional runtime warnings.
          Work around the next assertion AND the warning. 5.10 seriously
          needs to adjust it's attitude against working code.

2.222 Sat Jul 19 06:15:34 CEST 2008
        - you work around one -DDEBUGGING assertion bug in perl 5.10
          just to hit the next one. work around this one, too.

2.22 Tue Jul 15 13:26:51 CEST 2008
        - allow higher nesting levels in incremental parser.
        - error out earlier in some cases in the incremental parser
          (as suggested by Yuval Kogman).
        - improve incr-parser test (Yuval Kogman).

2.21 Tue Jun  3 08:43:23 CEST 2008
        - (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
        - remove the experimental status of the incremental parser interface.
        - move =encoding around again, to avoid bugs with search.cpan.org.
          when can we finally have utf-8 in pod???
        - add ->incr_reset method.

2.2  Wed Apr 16 20:37:25 CEST 2008
        - lifted the log2 rounding restriction of max_depth and max_size.
        - make booleans mutable by creating a copy instead of handing out
          the same scalar (reported by pasha sadri).
        - added support for incremental json parsing (still EXPERIMENTAL).
        - implemented and added a json_xs command line utility that can convert
          from/to a number of serialisation formats - tell me if you need more.
        - implement allow_unknown/get_allow_unknown methods.
        - fixed documentation of max_depth w.r.t. higher and equal.
        - moved down =encoding directive a bit, too much breaks if it's the first
          pod directive :/.
        - removed documentation section on other modules, it became somewhat
          outdated and is nowadays mostly of historical interest.

2.1  Wed Mar 19 23:23:18 CET 2008
        - update documentation here and there: add a large section
          about utf8/latin1/ascii flags, add a security consideration
          and extend and clarify the JSON and YAML section.
        - medium speed enhancements when encoding/decoding non-ascii chars.
        - minor speedup in number encoding case.
        - extend and clarify the section on incompatibilities
          between YAML and JSON.
        - switch to static inline from just inline when using gcc.
        - add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
        - fix some issues with UV to JSON conversion of unknown impact.
        - published the yahoo locals search result used in benchmarks as the
          original url changes so comparison is impossible.

2.01 Wed Dec  5 11:40:28 CET 2007
        - INCOMPATIBLE API CHANGE: to_json and from_json have been
          renamed to encode_json/decode_json for JSON.pm compatibility.
          The old functions croak and might be replaced by JSON.pm
          comaptible versions in some later release.

2.0  Tue Dec  4 11:30:46 CET 2007
        - this is supposed to be the first version of JSON::XS
          compatible with version 2.0+ of the JSON module.
          Using the JSON module as frontend to JSON::XS should be
          as fast as using JSON::XS directly, so consider using it
          instead.
        - added get_* methods for all "simple" options.
        - make JSON::XS subclassable.

1.53 Tue Nov 13 23:58:33 CET 2007
        - minor doc clarifications.
        - fixed many doc typos (patch by Thomas L. Shinnick).

1.52 Mon Oct 15 03:22:06 CEST 2007
        - remove =encoding pod directive again, it confuses too many pod
          parsers :/.

1.51 Sat Oct 13 03:55:56 CEST 2007
        - encode empty arrays/hashes in a compact way when pretty is enabled.
        - apparently JSON::XS was used to find some bugs in the
          JSON_checker testsuite, so add (the corrected) JSON_checker tests to
          the testsuite.
        - quite a bit of doc updates/extension.
        - require 5.8.2, as this seems to be the first unicode-stable version.

1.5  Tue Aug 28 04:05:38 CEST 2007
        - add support for tied hashes, based on ideas and testcase by
          Marcus Holland-Moritz.
        - implemented relaxed parsing mode where some extensions are being
          accepted. generation is still JSON-only.

1.44 Wed Aug 22 01:02:44 CEST 2007
        - very experimental process-emulation support, slowing everything down.
          the horribly broken perl threads are still not supported - YMMV.

1.43 Thu Jul 26 13:26:37 CEST 2007
        - convert big json numbers exclusively consisting of digits to NV
          only when there is no loss of precision, otherwise to string.

1.42 Tue Jul 24 00:51:18 CEST 2007
        - fix a crash caused by not handling missing array elements
          (report and testcase by Jay Kuri).

1.41 Tue Jul 10 18:21:44 CEST 2007
        - fix compilation with NDEBUG (assert side-effect),
          affects convert_blessed only.
        - fix a bug in decode filters calling ENTER; SAVETMPS;
          one time too often.
        - catch a typical error in TO_JSON methods.
        - antique-ised XS.xs again to work with outdated
          C compilers (windows...).

1.4  Mon Jul  2 10:06:30 CEST 2007
        - add convert_blessed setting.
        - encode did not catch all blessed objects, encoding their
          contents in most cases. This has been fixed by introducing
          the allow_blessed setting.
        - added filter_json_object and filter_json_single_key_object
          settings that specify a callback to be called when
          all/specific json objects are encountered.
        - assume that most object keys are simple ascii words and
          optimise this case, penalising the general case. This can
          speed up decoding by 30% in typical cases and gives
          a smaller and faster perl hash.
        - implemented simpleminded, optional resource size checking
          in decode_json.
        - remove objToJson/jsonToObj aliases, as the next version
          of JSON will not have them either.
        - bit the bullet and converted the very simple json object
          into a more complex one.
        - work around a bug where perl wrongly claims an integer
          is not an integer.
        - unbundle JSON::XS::Boolean into own pm file so Storable
          and similar modules can resolve the overloading when thawing.

1.3  Sun Jun 24 01:55:02 CEST 2007
        - make JSON::XS::true and false special overloaded objects
          and return those instead of 1 and 0 for those json atoms
          (JSON::PP compatibility is NOT achieved yet).
        - add JSON::XS::is_bool predicate to test for those special
          values.
        - add a reference to
          http://jpsykes.com/47/practical-csrf-and-json-security.
        - removed require 5.8.8 again, it is just not very expert-friendly.
          Also try to be more compatible with slightly older versions,
          which are not recommended (because they are buggy).

1.24 Mon Jun 11 05:40:49 CEST 2007
        - added informative section on JSON-as-YAML.
        - get rid of some c99-isms again.
        - localise dec->cur in decode_str, speeding up
          string decoding considerably (>15% on my amd64 + gcc).
        - increased SHORT_STRING_LEN to 16kb: stack space is
          usually plenty, and this actually saves memory
          when !shrinking as short strings will fit perfectly.

1.23 Wed Jun  6 20:13:06 CEST 2007
        - greatly improved small integer encoding and decoding speed.
        - implement a number of µ-optimisations.
        - updated benchmarks.

1.22 Thu May 24 00:07:25 CEST 2007
        - require 5.8.8 explicitly as older perls do not seem to offer
          the required macros.
        - possibly made it compile on so-called C compilers by microsoft.

1.21 Wed May  9 18:40:32 CEST 2007
        - character offset reported for trailing garbage was random.

1.2  Wed May  9 18:35:01 CEST 2007
        - decode did not work with magical scalars (doh!).
        - added latin1 flag to produce JSON texts in the latin1 subset
          of unicode.
        - flag trailing garbage as error.
        - new decode_prefix method that returns the number
          of characters consumed by a decode.
        - max octets/char in perls UTF-X is actually 13, not 11,
          as pointed out by Glenn Linderman.
        - fixed typoe reported by YAMASHINA Hio.

1.11 Mon Apr  9 07:05:49 CEST 2007
        - properly 0-terminate sv's returned by encode to help
          C libraries that expect that 0 to be there.
        - partially "port" JSON from C to microsofts fucking broken
          pseudo-C. They should be burned to the ground for pissing
          on standards. And I should be stoned for even trying to
          support this filthy excuse for a c compiler.

1.1  Wed Apr  4 01:45:00 CEST 2007
        - clarify documentation (pointed out by Quinn Weaver).
        - decode_utf8 sometimes did not correctly flag errors,
          leading to segfaults.
        - further reduced default nesting depth to 512 due to the test
          failure by that anonymous "chris" whose e-mail address seems
          to be impossible to get. Tests on other freebsd systems indicate
          that this is likely a problem in his/her configuration and not this
          module.
        - renamed json => JSON in error messages.
        - corrected the character offset in some error messages.

1.01 Sat Mar 31 16:15:40 CEST 2007
        - do not segfault when from_json/decode gets passed
          a non-string object (reported by Florian Ragwitz).
          This has no effect on normal operation.

1.0  Thu Mar 29 04:43:34 CEST 2007
        - the long awaited (by me) 1.0 version.
        - add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
          true and false.
        - add some more notes to shrink, as suggested by Alex Efros.
        - improve testsuite.
        - halve the default nesting depth limit, to hopefully make it
          work on Freebsd (unfortunately, the cpan tester did not
          send me his report, so I cannot ask about the stack limit on fbsd).

0.8  Mon Mar 26 00:10:48 CEST 2007
        - fix a memleak when decoding hashes.
        - export jsonToBj and objToJson as aliases
          to to_json and from_json, to reduce incompatibilities
          between JSON/JSON::PC and JSON::XS. (experimental).
        - implement a maximum nesting depth for both en- and de-coding.
        - added a security considerations sections.

0.7  Sun Mar 25 01:46:30 CET 2007
        - code cleanup.
        - fix a memory overflow bug when indenting.
        - pretty-printing now up to 15% faster.
        - improve decoding speed of strings by
          up to 50% by specialcasing short strings.
        - further decoding speedups for strings using
          lots of \u escapes.
        - improve utf8 decoding speed for U+80 .. U+7FF.

0.5  Sat Mar 24 20:41:51 CET 2007
        - added the UTF-16 encoding example hinted at in previous
          versions.
        - minor documentation fixes.
        - fix a bug in and optimise canonicalising fastpath
          (reported by Craig Manley).
        - remove a subtest that breaks with bleadperl (reported
          by Andreas König).

0.31 Sat Mar 24 02:14:34 CET 2007
        - documentation updates.
        - do some casting to hopefully fix Andreas' problem.
        - nuke bogus json rpc stuff.

0.3  Fri Mar 23 19:33:21 CET 2007
        - remove spurious PApp::Util reference (John McNamara).
        - adapted lots of tests from other json modules
          (idea by Chris Carline).
        - documented mapping from json to perl and vice versa.
        - improved the documentation by adding more examples.
        - added short escaping forms, reducing the created
          json texts a bit.
        - added shrink flag.
        - when flag methods are called without enable argument
          they will by default enable their flag.
        - considerably improved string encoding speed (at least
          with gcc 4).
        - added a test that covers lots of different characters.
        - clarified some error messages.
        - error messages now use correct character offset
          with F_UTF8.
        - improve the "no bytes" and "no warnings" hacks in
          case the called functions do... stuff.
        - croak when encoding to ascii and an out-of-range
          (non-unicode) codepoint is encountered.

0.2  Fri Mar 23 00:23:34 CET 2007
        - the "could not sleep without debugging release".
          it should basically work now, with many bugs as
          no production tests have been run yet.
        - added more testcases.
        - the expected shitload of bugfixes.
        - handle utf8 flag correctly in decode.
        - fix segfault in decoder.
        - utf8n_to_uvuni sets retlen to -1, but retlen is an
          unsigned types (argh).
        - fix decoding of utf-8 strings.
        - improved error diagnostics.
        - fix decoding of 'null'.
        - fix parsing of empty array/hashes
        - silence warnings when we prepare the croak message.

0.1   Thu Mar 22 22:13:43 CET 2007
        - first release, very untested, basically just to claim
          the namespace.
 
0.01  Thu Mar 22 06:08:12 CET 2007
        - original version; cloned from Convert-Scalar

Revision:	1.164
Committed:	Sun Dec 8 20:44:23 2013 UTC (10 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.163:	+2 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	Revision history for Perl extension JSON::XS
2	root	1.2
3	root	1.147	TODO: maybe detetc and croak on more invalid inputs (e.g. +-inf/nan)
4	root	1.151	TODO: maybe avoid the reblessing and better support readonly objects.
5	root	1.153	TODO: http://stevehanov.ca/blog/index.php?id=104 compression
6	root	1.151
7	root	1.163	TODO: how to cope with tagged values and standard json decoders
8	root	1.164	TODO: work around <=5.16 bugs (Reini Urban)
9	root	1.162	3.01 Tue Oct 29 16:55:15 CET 2013
10			- backport to perls < 5.18 (reported by Paul Howarth).
11
12	root	1.161	3.0 Tue Oct 29 01:35:37 CET 2013
13			- implemented an object tagging extension (using the
14	root	1.159	Types::Serialiser serialisation protocol).
15			- reworked the documentation regarding object serialisation,
16			add a new OBJECT SERIALISATION section that explains the
17			whole process.
18	root	1.160	- new setting: allow_tags.
19	root	1.158	- switch to Types::Serialiser booleans.
20	root	1.156	- remove to_json/from_json.
21	root	1.159	- other minor improvements to the documentation.
22	root	1.156
23	root	1.155	2.34 Thu May 23 11:30:34 CEST 2013
24			- work around bugs in perl 5.18 breaking more than 100
25			widely used modules, without a fix in sight because
26			p5pers don't care about CPAN anymore.
27	root	1.154	- when canonicalising, only allocate up to 64 hash key
28			pointers on the stack. for larger hashes, use the heap,
29			to avoid using too much stackspace.
30	root	1.155	- discuss the problem with setlocale (reported by a few victims).
31	root	1.154
32	root	1.153	2.33 Wed Aug 1 21:03:52 CEST 2012
33			- internal encode/decode XS wrappers did not expect stack
34			moves caused by callbacks (analyzed and testcase by Jesse Luehrs).
35	root	1.151	- add bencode as to/from option in bin/json_xs.
36	root	1.152	- add -e option to json_xs, and none and string in/out formats.
37	root	1.147
38	root	1.150	2.32 Thu Aug 11 19:06:38 CEST 2011
39			- fix a bug in the initial whitespace accumulation.
40
41	root	1.149	2.31 Wed Jul 27 17:53:05 CEST 2011
42	root	1.153	- don't accumulate initial whitespace in the incremental buffer
43	root	1.149	(this can be useful to allow whitespace-keepalive on a tcp
44			connection without triggering the max_size limit).
45	root	1.148	- properly croak on some invalid inputs that are not strings
46			(e.g. undef) when trying to decode a json text (reported
47			and analyzed by Goro Fuji).
48
49	root	1.146	2.3 Wed Aug 18 01:26:47 CEST 2010
50			- make sure decoder doesn't change the decoding in the incremental
51			parser (testcase provided by Hendrik Schumacher).
52	root	1.144	- applied patch by DaTa for Data::Dumper support in json_xs.
53	root	1.145	- added -t dump support to json_xs, using Data::Dump.
54	root	1.146	- added -f eval support to json_xs.
55	root	1.144
56	root	1.143	2.29 Wed Mar 17 02:39:12 CET 2010
57			- fix a memory leak when callbacks set using filter_json_object
58			or filter_json_single_key_object were called (great testcase
59			by Eric Wilhelm).
60
61	root	1.142	2.28 Thu Mar 11 20:30:46 CET 2010
62	root	1.139	- implement our own atof function - perl's can be orders of
63			magnitudes slower than even the system one. on the positive
64			side, ours seems to be more exact in general than perl's.
65			(testcase provided by Tim Meadowcroft).
66	root	1.142	- clarify floating point conversion issues a bit.
67	root	1.138	- update jpsykes csrf article url.
68	root	1.140	- updated benchmark section - JSON::PP became much faster!
69	root	1.138
70	root	1.137	2.27 Thu Jan 7 07:35:08 CET 2010
71	root	1.136	- support relaxed option inside the incremental parser
72	root	1.137	(testcase provided by IKEGAMI via Makamaka).
73	root	1.136
74	root	1.135	2.26 Sat Oct 10 03:26:19 CEST 2009
75			- big integers could become truncated (based on patch
76			by Strobl Anton).
77	root	1.134	- output format change: indent now adds a final newline, which is
78			more expected and more true to the documentation.
79	root	1.132
80	root	1.131	2.25 Sat Aug 8 12:04:41 CEST 2009
81			- the perl debugger completely breaks lvalue subs - try to work
82			around the issue.
83	root	1.130	- ignore RMAGICAL hashes w.r.t. CANONICAL.
84	root	1.128	- try to work around a possible char signedness issue on aix.
85	root	1.129	- require common sense.
86	root	1.128
87	root	1.127	2.24 Sat May 30 08:25:45 CEST 2009
88			- the incremental parser did not update its parse offset
89			pointer correctly when parsing utf8-strings (nicely
90			debugged by Martin Evans).
91			- appending a non-utf8-string to the incremental parser
92			in utf8 mode failed to upgrade the string.
93			- wording of parse error messages has been improved.
94
95	root	1.126	2.232 Sun Feb 22 11:12:25 CET 2009
96	root	1.125	- use an exponential algorithm to extend strings, to
97	root	1.126	help platforms with bad or abysmal==windows memory
98			allocater performance, at the expense of some memory
99	root	1.125	wastage (use shrink to recover this extra memory).
100			(nicely analysed by Dmitry Karasik).
101
102	root	1.124	2.2311 Thu Feb 19 02:12:54 CET 2009
103	root	1.123	- add a section "JSON and ECMAscript" to explain some
104			incompatibilities between the two (problem was noted by
105			various people).
106	root	1.122	- add t/20_faihu.t.
107
108	root	1.121	2.231 Thu Nov 20 04:59:08 CET 2008
109			- work around 5.10.0 magic bugs where manipulating magic values
110			(such as $1) would permanently damage them as perl would
111			ignore the magicalness, by making a full copy of the string,
112			reported by Dmitry Karasik.
113	root	1.125	- work around spurious warnings under older perl 5.8's.
114	root	1.121
115	root	1.120	2.23 Mon Sep 29 05:08:29 CEST 2008
116			- fix a compilation problem when perl is not using char * as, well,
117			char *.
118	root	1.119	- use PL_hexdigit in favour of rolling our own.
119
120	root	1.118	2.2222 Sun Jul 20 18:49:00 CEST 2008
121			- same game again, broken 5.10 finds yet another assertion
122			failure, and the workaround causes additional runtime warnings.
123			Work around the next assertion AND the warning. 5.10 seriously
124			needs to adjust it's attitude against working code.
125
126	root	1.117	2.222 Sat Jul 19 06:15:34 CEST 2008
127			- you work around one -DDEBUGGING assertion bug in perl 5.10
128			just to hit the next one. work around this one, too.
129
130	root	1.116	2.22 Tue Jul 15 13:26:51 CEST 2008
131	root	1.115	- allow higher nesting levels in incremental parser.
132			- error out earlier in some cases in the incremental parser
133			(as suggested by Yuval Kogman).
134			- improve incr-parser test (Yuval Kogman).
135
136	root	1.114	2.21 Tue Jun 3 08:43:23 CEST 2008
137			- (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
138	root	1.112	- remove the experimental status of the incremental parser interface.
139	root	1.111	- move =encoding around again, to avoid bugs with search.cpan.org.
140			when can we finally have utf-8 in pod???
141	root	1.113	- add ->incr_reset method.
142	root	1.111
143	root	1.110	2.2 Wed Apr 16 20:37:25 CEST 2008
144	root	1.109	- lifted the log2 rounding restriction of max_depth and max_size.
145	root	1.107	- make booleans mutable by creating a copy instead of handing out
146			the same scalar (reported by pasha sadri).
147	root	1.164	- added support for incremental json parsing (still EXPERIMENTAL).
148	root	1.103	- implemented and added a json_xs command line utility that can convert
149			from/to a number of serialisation formats - tell me if you need more.
150	root	1.108	- implement allow_unknown/get_allow_unknown methods.
151	root	1.109	- fixed documentation of max_depth w.r.t. higher and equal.
152	root	1.112	- moved down =encoding directive a bit, too much breaks if it's the first
153	root	1.102	pod directive :/.
154	root	1.106	- removed documentation section on other modules, it became somewhat
155			outdated and is nowadays mostly of historical interest.
156	root	1.102
157	root	1.101	2.1 Wed Mar 19 23:23:18 CET 2008
158			- update documentation here and there: add a large section
159			about utf8/latin1/ascii flags, add a security consideration
160			and extend and clarify the JSON and YAML section.
161	root	1.98	- medium speed enhancements when encoding/decoding non-ascii chars.
162	root	1.100	- minor speedup in number encoding case.
163	root	1.92	- extend and clarify the section on incompatibilities
164			between YAML and JSON.
165	root	1.95	- switch to static inline from just inline when using gcc.
166	root	1.94	- add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
167	root	1.100	- fix some issues with UV to JSON conversion of unknown impact.
168	root	1.99	- published the yahoo locals search result used in benchmarks as the
169			original url changes so comparison is impossible.
170	root	1.92
171	root	1.91	2.01 Wed Dec 5 11:40:28 CET 2007
172			- INCOMPATIBLE API CHANGE: to_json and from_json have been
173			renamed to encode_json/decode_json for JSON.pm compatibility.
174			The old functions croak and might be replaced by JSON.pm
175			comaptible versions in some later release.
176
177	root	1.90	2.0 Tue Dec 4 11:30:46 CET 2007
178			- this is supposed to be the first version of JSON::XS
179			compatible with version 2.0+ of the JSON module.
180			Using the JSON module as frontend to JSON::XS should be
181			as fast as using JSON::XS directly, so consider using it
182			instead.
183	root	1.88	- added get_* methods for all "simple" options.
184	root	1.89	- make JSON::XS subclassable.
185	root	1.88
186	root	1.86	1.53 Tue Nov 13 23:58:33 CET 2007
187	root	1.85	- minor doc clarifications.
188			- fixed many doc typos (patch by Thomas L. Shinnick).
189
190	root	1.84	1.52 Mon Oct 15 03:22:06 CEST 2007
191	root	1.83	- remove =encoding pod directive again, it confuses too many pod
192			parsers :/.
193
194	root	1.82	1.51 Sat Oct 13 03:55:56 CEST 2007
195	root	1.81	- encode empty arrays/hashes in a compact way when pretty is enabled.
196	root	1.87	- apparently JSON::XS was used to find some bugs in the
197	root	1.80	JSON_checker testsuite, so add (the corrected) JSON_checker tests to
198			the testsuite.
199			- quite a bit of doc updates/extension.
200	root	1.79	- require 5.8.2, as this seems to be the first unicode-stable version.
201	root	1.78
202	root	1.77	1.5 Tue Aug 28 04:05:38 CEST 2007
203	root	1.74	- add support for tied hashes, based on ideas and testcase by
204			Marcus Holland-Moritz.
205	root	1.75	- implemented relaxed parsing mode where some extensions are being
206			accepted. generation is still JSON-only.
207	root	1.74
208			1.44 Wed Aug 22 01:02:44 CEST 2007
209	root	1.73	- very experimental process-emulation support, slowing everything down.
210			the horribly broken perl threads are still not supported - YMMV.
211
212	root	1.72	1.43 Thu Jul 26 13:26:37 CEST 2007
213			- convert big json numbers exclusively consisting of digits to NV
214			only when there is no loss of precision, otherwise to string.
215
216	root	1.71	1.42 Tue Jul 24 00:51:18 CEST 2007
217			- fix a crash caused by not handling missing array elements
218			(report and testcase by Jay Kuri).
219
220	root	1.70	1.41 Tue Jul 10 18:21:44 CEST 2007
221			- fix compilation with NDEBUG (assert side-effect),
222			affects convert_blessed only.
223	root	1.69	- fix a bug in decode filters calling ENTER; SAVETMPS;
224			one time too often.
225	root	1.70	- catch a typical error in TO_JSON methods.
226	root	1.69	- antique-ised XS.xs again to work with outdated
227			C compilers (windows...).
228
229	root	1.68	1.4 Mon Jul 2 10:06:30 CEST 2007
230	root	1.63	- add convert_blessed setting.
231	root	1.56	- encode did not catch all blessed objects, encoding their
232			contents in most cases. This has been fixed by introducing
233			the allow_blessed setting.
234	root	1.65	- added filter_json_object and filter_json_single_key_object
235			settings that specify a callback to be called when
236	root	1.67	all/specific json objects are encountered.
237	root	1.59	- assume that most object keys are simple ascii words and
238			optimise this case, penalising the general case. This can
239			speed up decoding by 30% in typical cases and gives
240			a smaller and faster perl hash.
241	root	1.58	- implemented simpleminded, optional resource size checking
242			in decode_json.
243	root	1.61	- remove objToJson/jsonToObj aliases, as the next version
244			of JSON will not have them either.
245	root	1.62	- bit the bullet and converted the very simple json object
246			into a more complex one.
247	root	1.64	- work around a bug where perl wrongly claims an integer
248			is not an integer.
249	root	1.65	- unbundle JSON::XS::Boolean into own pm file so Storable
250			and similar modules can resolve the overloading when thawing.
251	root	1.56
252	root	1.55	1.3 Sun Jun 24 01:55:02 CEST 2007
253	root	1.54	- make JSON::XS::true and false special overloaded objects
254			and return those instead of 1 and 0 for those json atoms
255			(JSON::PP compatibility is NOT achieved yet).
256			- add JSON::XS::is_bool predicate to test for those special
257			values.
258	root	1.52	- add a reference to
259			http://jpsykes.com/47/practical-csrf-and-json-security.
260	root	1.60	- removed require 5.8.8 again, it is just not very expert-friendly.
261			Also try to be more compatible with slightly older versions,
262	root	1.54	which are not recommended (because they are buggy).
263	root	1.52
264	root	1.51	1.24 Mon Jun 11 05:40:49 CEST 2007
265	root	1.49	- added informative section on JSON-as-YAML.
266	root	1.51	- get rid of some c99-isms again.
267	root	1.50	- localise dec->cur in decode_str, speeding up
268			string decoding considerably (>15% on my amd64 + gcc).
269			- increased SHORT_STRING_LEN to 16kb: stack space is
270			usually plenty, and this actually saves memory
271	root	1.51	when !shrinking as short strings will fit perfectly.
272	root	1.49
273	root	1.47	1.23 Wed Jun 6 20:13:06 CEST 2007
274	root	1.46	- greatly improved small integer encoding and decoding speed.
275			- implement a number of µ-optimisations.
276	root	1.47	- updated benchmarks.
277	root	1.46
278	root	1.45	1.22 Thu May 24 00:07:25 CEST 2007
279	root	1.42	- require 5.8.8 explicitly as older perls do not seem to offer
280			the required macros.
281	root	1.43	- possibly made it compile on so-called C compilers by microsoft.
282	root	1.42
283	root	1.41	1.21 Wed May 9 18:40:32 CEST 2007
284	root	1.47	- character offset reported for trailing garbage was random.
285	root	1.41
286	root	1.40	1.2 Wed May 9 18:35:01 CEST 2007
287			- decode did not work with magical scalars (doh!).
288	root	1.38	- added latin1 flag to produce JSON texts in the latin1 subset
289			of unicode.
290	root	1.39	- flag trailing garbage as error.
291			- new decode_prefix method that returns the number
292			of characters consumed by a decode.
293	root	1.40	- max octets/char in perls UTF-X is actually 13, not 11,
294			as pointed out by Glenn Linderman.
295			- fixed typoe reported by YAMASHINA Hio.
296	root	1.34
297	root	1.32	1.11 Mon Apr 9 07:05:49 CEST 2007
298			- properly 0-terminate sv's returned by encode to help
299			C libraries that expect that 0 to be there.
300	root	1.31	- partially "port" JSON from C to microsofts fucking broken
301			pseudo-C. They should be burned to the ground for pissing
302			on standards. And I should be stoned for even trying to
303	root	1.32	support this filthy excuse for a c compiler.
304	root	1.6
305	root	1.30	1.1 Wed Apr 4 01:45:00 CEST 2007
306	root	1.28	- clarify documentation (pointed out by Quinn Weaver).
307	root	1.29	- decode_utf8 sometimes did not correctly flag errors,
308			leading to segfaults.
309	root	1.30	- further reduced default nesting depth to 512 due to the test
310			failure by that anonymous "chris" whose e-mail address seems
311			to be impossible to get. Tests on other freebsd systems indicate
312			that this is likely a problem in his/her configuration and not this
313			module.
314			- renamed json => JSON in error messages.
315			- corrected the character offset in some error messages.
316	root	1.28
317	root	1.27	1.01 Sat Mar 31 16:15:40 CEST 2007
318			- do not segfault when from_json/decode gets passed
319			a non-string object (reported by Florian Ragwitz).
320			This has no effect on normal operation.
321
322	root	1.25	1.0 Thu Mar 29 04:43:34 CEST 2007
323			- the long awaited (by me) 1.0 version.
324			- add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
325			true and false.
326	root	1.24	- add some more notes to shrink, as suggested by Alex Efros.
327	root	1.25	- improve testsuite.
328	root	1.26	- halve the default nesting depth limit, to hopefully make it
329	root	1.25	work on Freebsd (unfortunately, the cpan tester did not
330			send me his report, so I cannot ask about the stack limit on fbsd).
331	root	1.24
332	root	1.23	0.8 Mon Mar 26 00:10:48 CEST 2007
333	root	1.21	- fix a memleak when decoding hashes.
334	root	1.20	- export jsonToBj and objToJson as aliases
335			to to_json and from_json, to reduce incompatibilities
336			between JSON/JSON::PC and JSON::XS. (experimental).
337	root	1.21	- implement a maximum nesting depth for both en- and de-coding.
338			- added a security considerations sections.
339	root	1.20
340	root	1.19	0.7 Sun Mar 25 01:46:30 CET 2007
341	root	1.16	- code cleanup.
342			- fix a memory overflow bug when indenting.
343			- pretty-printing now up to 15% faster.
344			- improve decoding speed of strings by
345			up to 50% by specialcasing short strings.
346			- further decoding speedups for strings using
347			lots of \u escapes.
348	root	1.17	- improve utf8 decoding speed for U+80 .. U+7FF.
349	root	1.16
350	root	1.15	0.5 Sat Mar 24 20:41:51 CET 2007
351	root	1.14	- added the UTF-16 encoding example hinted at in previous
352			versions.
353			- minor documentation fixes.
354	root	1.15	- fix a bug in and optimise canonicalising fastpath
355			(reported by Craig Manley).
356			- remove a subtest that breaks with bleadperl (reported
357			by Andreas König).
358	root	1.14
359	root	1.13	0.31 Sat Mar 24 02:14:34 CET 2007
360	root	1.12	- documentation updates.
361	root	1.13	- do some casting to hopefully fix Andreas' problem.
362			- nuke bogus json rpc stuff.
363	root	1.12
364	root	1.11	0.3 Fri Mar 23 19:33:21 CET 2007
365	root	1.5	- remove spurious PApp::Util reference (John McNamara).
366			- adapted lots of tests from other json modules
367			(idea by Chris Carline).
368	root	1.9	- documented mapping from json to perl and vice versa.
369	root	1.11	- improved the documentation by adding more examples.
370	root	1.5	- added short escaping forms, reducing the created
371			json texts a bit.
372			- added shrink flag.
373			- when flag methods are called without enable argument
374			they will by default enable their flag.
375			- considerably improved string encoding speed (at least
376			with gcc 4).
377	root	1.7	- added a test that covers lots of different characters.
378			- clarified some error messages.
379			- error messages now use correct character offset
380			with F_UTF8.
381	root	1.8	- improve the "no bytes" and "no warnings" hacks in
382			case the called functions do... stuff.
383	root	1.9	- croak when encoding to ascii and an out-of-range
384			(non-unicode) codepoint is encountered.
385	root	1.4
386	root	1.3	0.2 Fri Mar 23 00:23:34 CET 2007
387	root	1.109	- the "could not sleep without debugging release".
388	root	1.3	it should basically work now, with many bugs as
389			no production tests have been run yet.
390			- added more testcases.
391			- the expected shitload of bugfixes.
392			- handle utf8 flag correctly in decode.
393			- fix segfault in decoder.
394			- utf8n_to_uvuni sets retlen to -1, but retlen is an
395			unsigned types (argh).
396			- fix decoding of utf-8 strings.
397			- improved error diagnostics.
398			- fix decoding of 'null'.
399			- fix parsing of empty array/hashes
400			- silence warnings when we prepare the croak message.
401
402	root	1.2	0.1 Thu Mar 22 22:13:43 CET 2007
403			- first release, very untested, basically just to claim
404			the namespace.
405	root	1.1
406			0.01 Thu Mar 22 06:08:12 CET 2007
407			- original version; cloned from Convert-Scalar
408