[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)
TODO: decide what to do with RFC7158 incompatibilities.
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 th
          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:	1.165
Committed:	Sun Mar 2 22:09:38 2014 UTC (10 years, 2 months ago) by root
Branch:	MAIN
Changes since 1.164:	+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	1.165	TODO: decide what to do with RFC7158 incompatibilities.
10	root	1.162	3.01 Tue Oct 29 16:55:15 CET 2013
11			- backport to perls < 5.18 (reported by Paul Howarth).
12
13	root	1.161	3.0 Tue Oct 29 01:35:37 CET 2013
14			- implemented an object tagging extension (using the
15	root	1.159	Types::Serialiser serialisation protocol).
16			- reworked the documentation regarding object serialisation,
17	root	1.165	add a new OBJECT SERIALISATION section that explains th
18	root	1.159	whole process.
19	root	1.160	- new setting: allow_tags.
20	root	1.158	- switch to Types::Serialiser booleans.
21	root	1.156	- remove to_json/from_json.
22	root	1.159	- other minor improvements to the documentation.
23	root	1.156
24	root	1.155	2.34 Thu May 23 11:30:34 CEST 2013
25			- work around bugs in perl 5.18 breaking more than 100
26			widely used modules, without a fix in sight because
27			p5pers don't care about CPAN anymore.
28	root	1.154	- when canonicalising, only allocate up to 64 hash key
29			pointers on the stack. for larger hashes, use the heap,
30			to avoid using too much stackspace.
31	root	1.155	- discuss the problem with setlocale (reported by a few victims).
32	root	1.154
33	root	1.153	2.33 Wed Aug 1 21:03:52 CEST 2012
34			- internal encode/decode XS wrappers did not expect stack
35			moves caused by callbacks (analyzed and testcase by Jesse Luehrs).
36	root	1.151	- add bencode as to/from option in bin/json_xs.
37	root	1.152	- add -e option to json_xs, and none and string in/out formats.
38	root	1.147
39	root	1.150	2.32 Thu Aug 11 19:06:38 CEST 2011
40			- fix a bug in the initial whitespace accumulation.
41
42	root	1.149	2.31 Wed Jul 27 17:53:05 CEST 2011
43	root	1.153	- don't accumulate initial whitespace in the incremental buffer
44	root	1.149	(this can be useful to allow whitespace-keepalive on a tcp
45			connection without triggering the max_size limit).
46	root	1.148	- properly croak on some invalid inputs that are not strings
47			(e.g. undef) when trying to decode a json text (reported
48			and analyzed by Goro Fuji).
49
50	root	1.146	2.3 Wed Aug 18 01:26:47 CEST 2010
51			- make sure decoder doesn't change the decoding in the incremental
52			parser (testcase provided by Hendrik Schumacher).
53	root	1.144	- applied patch by DaTa for Data::Dumper support in json_xs.
54	root	1.145	- added -t dump support to json_xs, using Data::Dump.
55	root	1.146	- added -f eval support to json_xs.
56	root	1.144
57	root	1.143	2.29 Wed Mar 17 02:39:12 CET 2010
58			- fix a memory leak when callbacks set using filter_json_object
59			or filter_json_single_key_object were called (great testcase
60			by Eric Wilhelm).
61
62	root	1.142	2.28 Thu Mar 11 20:30:46 CET 2010
63	root	1.139	- implement our own atof function - perl's can be orders of
64			magnitudes slower than even the system one. on the positive
65			side, ours seems to be more exact in general than perl's.
66			(testcase provided by Tim Meadowcroft).
67	root	1.142	- clarify floating point conversion issues a bit.
68	root	1.138	- update jpsykes csrf article url.
69	root	1.140	- updated benchmark section - JSON::PP became much faster!
70	root	1.138
71	root	1.137	2.27 Thu Jan 7 07:35:08 CET 2010
72	root	1.136	- support relaxed option inside the incremental parser
73	root	1.137	(testcase provided by IKEGAMI via Makamaka).
74	root	1.136
75	root	1.135	2.26 Sat Oct 10 03:26:19 CEST 2009
76			- big integers could become truncated (based on patch
77			by Strobl Anton).
78	root	1.134	- output format change: indent now adds a final newline, which is
79			more expected and more true to the documentation.
80	root	1.132
81	root	1.131	2.25 Sat Aug 8 12:04:41 CEST 2009
82			- the perl debugger completely breaks lvalue subs - try to work
83			around the issue.
84	root	1.130	- ignore RMAGICAL hashes w.r.t. CANONICAL.
85	root	1.128	- try to work around a possible char signedness issue on aix.
86	root	1.129	- require common sense.
87	root	1.128
88	root	1.127	2.24 Sat May 30 08:25:45 CEST 2009
89			- the incremental parser did not update its parse offset
90			pointer correctly when parsing utf8-strings (nicely
91			debugged by Martin Evans).
92			- appending a non-utf8-string to the incremental parser
93			in utf8 mode failed to upgrade the string.
94			- wording of parse error messages has been improved.
95
96	root	1.126	2.232 Sun Feb 22 11:12:25 CET 2009
97	root	1.125	- use an exponential algorithm to extend strings, to
98	root	1.126	help platforms with bad or abysmal==windows memory
99			allocater performance, at the expense of some memory
100	root	1.125	wastage (use shrink to recover this extra memory).
101			(nicely analysed by Dmitry Karasik).
102
103	root	1.124	2.2311 Thu Feb 19 02:12:54 CET 2009
104	root	1.123	- add a section "JSON and ECMAscript" to explain some
105			incompatibilities between the two (problem was noted by
106			various people).
107	root	1.122	- add t/20_faihu.t.
108
109	root	1.121	2.231 Thu Nov 20 04:59:08 CET 2008
110			- work around 5.10.0 magic bugs where manipulating magic values
111			(such as $1) would permanently damage them as perl would
112			ignore the magicalness, by making a full copy of the string,
113			reported by Dmitry Karasik.
114	root	1.125	- work around spurious warnings under older perl 5.8's.
115	root	1.121
116	root	1.120	2.23 Mon Sep 29 05:08:29 CEST 2008
117			- fix a compilation problem when perl is not using char * as, well,
118			char *.
119	root	1.119	- use PL_hexdigit in favour of rolling our own.
120
121	root	1.118	2.2222 Sun Jul 20 18:49:00 CEST 2008
122			- same game again, broken 5.10 finds yet another assertion
123			failure, and the workaround causes additional runtime warnings.
124			Work around the next assertion AND the warning. 5.10 seriously
125			needs to adjust it's attitude against working code.
126
127	root	1.117	2.222 Sat Jul 19 06:15:34 CEST 2008
128			- you work around one -DDEBUGGING assertion bug in perl 5.10
129			just to hit the next one. work around this one, too.
130
131	root	1.116	2.22 Tue Jul 15 13:26:51 CEST 2008
132	root	1.115	- allow higher nesting levels in incremental parser.
133			- error out earlier in some cases in the incremental parser
134			(as suggested by Yuval Kogman).
135			- improve incr-parser test (Yuval Kogman).
136
137	root	1.114	2.21 Tue Jun 3 08:43:23 CEST 2008
138			- (hopefully) work around a perl 5.10 bug with -DDEBUGGING.
139	root	1.112	- remove the experimental status of the incremental parser interface.
140	root	1.111	- move =encoding around again, to avoid bugs with search.cpan.org.
141			when can we finally have utf-8 in pod???
142	root	1.113	- add ->incr_reset method.
143	root	1.111
144	root	1.110	2.2 Wed Apr 16 20:37:25 CEST 2008
145	root	1.109	- lifted the log2 rounding restriction of max_depth and max_size.
146	root	1.107	- make booleans mutable by creating a copy instead of handing out
147			the same scalar (reported by pasha sadri).
148	root	1.164	- added support for incremental json parsing (still EXPERIMENTAL).
149	root	1.103	- implemented and added a json_xs command line utility that can convert
150			from/to a number of serialisation formats - tell me if you need more.
151	root	1.108	- implement allow_unknown/get_allow_unknown methods.
152	root	1.109	- fixed documentation of max_depth w.r.t. higher and equal.
153	root	1.112	- moved down =encoding directive a bit, too much breaks if it's the first
154	root	1.102	pod directive :/.
155	root	1.106	- removed documentation section on other modules, it became somewhat
156			outdated and is nowadays mostly of historical interest.
157	root	1.102
158	root	1.101	2.1 Wed Mar 19 23:23:18 CET 2008
159			- update documentation here and there: add a large section
160			about utf8/latin1/ascii flags, add a security consideration
161			and extend and clarify the JSON and YAML section.
162	root	1.98	- medium speed enhancements when encoding/decoding non-ascii chars.
163	root	1.100	- minor speedup in number encoding case.
164	root	1.92	- extend and clarify the section on incompatibilities
165			between YAML and JSON.
166	root	1.95	- switch to static inline from just inline when using gcc.
167	root	1.94	- add =encoding utf-8 to the manpage, now that perl 5.10 supports it.
168	root	1.100	- fix some issues with UV to JSON conversion of unknown impact.
169	root	1.99	- published the yahoo locals search result used in benchmarks as the
170			original url changes so comparison is impossible.
171	root	1.92
172	root	1.91	2.01 Wed Dec 5 11:40:28 CET 2007
173			- INCOMPATIBLE API CHANGE: to_json and from_json have been
174			renamed to encode_json/decode_json for JSON.pm compatibility.
175			The old functions croak and might be replaced by JSON.pm
176			comaptible versions in some later release.
177
178	root	1.90	2.0 Tue Dec 4 11:30:46 CET 2007
179			- this is supposed to be the first version of JSON::XS
180			compatible with version 2.0+ of the JSON module.
181			Using the JSON module as frontend to JSON::XS should be
182			as fast as using JSON::XS directly, so consider using it
183			instead.
184	root	1.88	- added get_* methods for all "simple" options.
185	root	1.89	- make JSON::XS subclassable.
186	root	1.88
187	root	1.86	1.53 Tue Nov 13 23:58:33 CET 2007
188	root	1.85	- minor doc clarifications.
189			- fixed many doc typos (patch by Thomas L. Shinnick).
190
191	root	1.84	1.52 Mon Oct 15 03:22:06 CEST 2007
192	root	1.83	- remove =encoding pod directive again, it confuses too many pod
193			parsers :/.
194
195	root	1.82	1.51 Sat Oct 13 03:55:56 CEST 2007
196	root	1.81	- encode empty arrays/hashes in a compact way when pretty is enabled.
197	root	1.87	- apparently JSON::XS was used to find some bugs in the
198	root	1.80	JSON_checker testsuite, so add (the corrected) JSON_checker tests to
199			the testsuite.
200			- quite a bit of doc updates/extension.
201	root	1.79	- require 5.8.2, as this seems to be the first unicode-stable version.
202	root	1.78
203	root	1.77	1.5 Tue Aug 28 04:05:38 CEST 2007
204	root	1.74	- add support for tied hashes, based on ideas and testcase by
205			Marcus Holland-Moritz.
206	root	1.75	- implemented relaxed parsing mode where some extensions are being
207			accepted. generation is still JSON-only.
208	root	1.74
209			1.44 Wed Aug 22 01:02:44 CEST 2007
210	root	1.73	- very experimental process-emulation support, slowing everything down.
211			the horribly broken perl threads are still not supported - YMMV.
212
213	root	1.72	1.43 Thu Jul 26 13:26:37 CEST 2007
214			- convert big json numbers exclusively consisting of digits to NV
215			only when there is no loss of precision, otherwise to string.
216
217	root	1.71	1.42 Tue Jul 24 00:51:18 CEST 2007
218			- fix a crash caused by not handling missing array elements
219			(report and testcase by Jay Kuri).
220
221	root	1.70	1.41 Tue Jul 10 18:21:44 CEST 2007
222			- fix compilation with NDEBUG (assert side-effect),
223			affects convert_blessed only.
224	root	1.69	- fix a bug in decode filters calling ENTER; SAVETMPS;
225			one time too often.
226	root	1.70	- catch a typical error in TO_JSON methods.
227	root	1.69	- antique-ised XS.xs again to work with outdated
228			C compilers (windows...).
229
230	root	1.68	1.4 Mon Jul 2 10:06:30 CEST 2007
231	root	1.63	- add convert_blessed setting.
232	root	1.56	- encode did not catch all blessed objects, encoding their
233			contents in most cases. This has been fixed by introducing
234			the allow_blessed setting.
235	root	1.65	- added filter_json_object and filter_json_single_key_object
236			settings that specify a callback to be called when
237	root	1.67	all/specific json objects are encountered.
238	root	1.59	- assume that most object keys are simple ascii words and
239			optimise this case, penalising the general case. This can
240			speed up decoding by 30% in typical cases and gives
241			a smaller and faster perl hash.
242	root	1.58	- implemented simpleminded, optional resource size checking
243			in decode_json.
244	root	1.61	- remove objToJson/jsonToObj aliases, as the next version
245			of JSON will not have them either.
246	root	1.62	- bit the bullet and converted the very simple json object
247			into a more complex one.
248	root	1.64	- work around a bug where perl wrongly claims an integer
249			is not an integer.
250	root	1.65	- unbundle JSON::XS::Boolean into own pm file so Storable
251			and similar modules can resolve the overloading when thawing.
252	root	1.56
253	root	1.55	1.3 Sun Jun 24 01:55:02 CEST 2007
254	root	1.54	- make JSON::XS::true and false special overloaded objects
255			and return those instead of 1 and 0 for those json atoms
256			(JSON::PP compatibility is NOT achieved yet).
257			- add JSON::XS::is_bool predicate to test for those special
258			values.
259	root	1.52	- add a reference to
260			http://jpsykes.com/47/practical-csrf-and-json-security.
261	root	1.60	- removed require 5.8.8 again, it is just not very expert-friendly.
262			Also try to be more compatible with slightly older versions,
263	root	1.54	which are not recommended (because they are buggy).
264	root	1.52
265	root	1.51	1.24 Mon Jun 11 05:40:49 CEST 2007
266	root	1.49	- added informative section on JSON-as-YAML.
267	root	1.51	- get rid of some c99-isms again.
268	root	1.50	- localise dec->cur in decode_str, speeding up
269			string decoding considerably (>15% on my amd64 + gcc).
270			- increased SHORT_STRING_LEN to 16kb: stack space is
271			usually plenty, and this actually saves memory
272	root	1.51	when !shrinking as short strings will fit perfectly.
273	root	1.49
274	root	1.47	1.23 Wed Jun 6 20:13:06 CEST 2007
275	root	1.46	- greatly improved small integer encoding and decoding speed.
276			- implement a number of µ-optimisations.
277	root	1.47	- updated benchmarks.
278	root	1.46
279	root	1.45	1.22 Thu May 24 00:07:25 CEST 2007
280	root	1.42	- require 5.8.8 explicitly as older perls do not seem to offer
281			the required macros.
282	root	1.43	- possibly made it compile on so-called C compilers by microsoft.
283	root	1.42
284	root	1.41	1.21 Wed May 9 18:40:32 CEST 2007
285	root	1.47	- character offset reported for trailing garbage was random.
286	root	1.41
287	root	1.40	1.2 Wed May 9 18:35:01 CEST 2007
288			- decode did not work with magical scalars (doh!).
289	root	1.38	- added latin1 flag to produce JSON texts in the latin1 subset
290			of unicode.
291	root	1.39	- flag trailing garbage as error.
292			- new decode_prefix method that returns the number
293			of characters consumed by a decode.
294	root	1.40	- max octets/char in perls UTF-X is actually 13, not 11,
295			as pointed out by Glenn Linderman.
296			- fixed typoe reported by YAMASHINA Hio.
297	root	1.34
298	root	1.32	1.11 Mon Apr 9 07:05:49 CEST 2007
299			- properly 0-terminate sv's returned by encode to help
300			C libraries that expect that 0 to be there.
301	root	1.31	- partially "port" JSON from C to microsofts fucking broken
302			pseudo-C. They should be burned to the ground for pissing
303			on standards. And I should be stoned for even trying to
304	root	1.32	support this filthy excuse for a c compiler.
305	root	1.6
306	root	1.30	1.1 Wed Apr 4 01:45:00 CEST 2007
307	root	1.28	- clarify documentation (pointed out by Quinn Weaver).
308	root	1.29	- decode_utf8 sometimes did not correctly flag errors,
309			leading to segfaults.
310	root	1.30	- further reduced default nesting depth to 512 due to the test
311			failure by that anonymous "chris" whose e-mail address seems
312			to be impossible to get. Tests on other freebsd systems indicate
313			that this is likely a problem in his/her configuration and not this
314			module.
315			- renamed json => JSON in error messages.
316			- corrected the character offset in some error messages.
317	root	1.28
318	root	1.27	1.01 Sat Mar 31 16:15:40 CEST 2007
319			- do not segfault when from_json/decode gets passed
320			a non-string object (reported by Florian Ragwitz).
321			This has no effect on normal operation.
322
323	root	1.25	1.0 Thu Mar 29 04:43:34 CEST 2007
324			- the long awaited (by me) 1.0 version.
325			- add \0 (JSON::XS::false) and \1 (JSON::XS::true) mappings to JSON
326			true and false.
327	root	1.24	- add some more notes to shrink, as suggested by Alex Efros.
328	root	1.25	- improve testsuite.
329	root	1.26	- halve the default nesting depth limit, to hopefully make it
330	root	1.25	work on Freebsd (unfortunately, the cpan tester did not
331			send me his report, so I cannot ask about the stack limit on fbsd).
332	root	1.24
333	root	1.23	0.8 Mon Mar 26 00:10:48 CEST 2007
334	root	1.21	- fix a memleak when decoding hashes.
335	root	1.20	- export jsonToBj and objToJson as aliases
336			to to_json and from_json, to reduce incompatibilities
337			between JSON/JSON::PC and JSON::XS. (experimental).
338	root	1.21	- implement a maximum nesting depth for both en- and de-coding.
339			- added a security considerations sections.
340	root	1.20
341	root	1.19	0.7 Sun Mar 25 01:46:30 CET 2007
342	root	1.16	- code cleanup.
343			- fix a memory overflow bug when indenting.
344			- pretty-printing now up to 15% faster.
345			- improve decoding speed of strings by
346			up to 50% by specialcasing short strings.
347			- further decoding speedups for strings using
348			lots of \u escapes.
349	root	1.17	- improve utf8 decoding speed for U+80 .. U+7FF.
350	root	1.16
351	root	1.15	0.5 Sat Mar 24 20:41:51 CET 2007
352	root	1.14	- added the UTF-16 encoding example hinted at in previous
353			versions.
354			- minor documentation fixes.
355	root	1.15	- fix a bug in and optimise canonicalising fastpath
356			(reported by Craig Manley).
357			- remove a subtest that breaks with bleadperl (reported
358			by Andreas König).
359	root	1.14
360	root	1.13	0.31 Sat Mar 24 02:14:34 CET 2007
361	root	1.12	- documentation updates.
362	root	1.13	- do some casting to hopefully fix Andreas' problem.
363			- nuke bogus json rpc stuff.
364	root	1.12
365	root	1.11	0.3 Fri Mar 23 19:33:21 CET 2007
366	root	1.5	- remove spurious PApp::Util reference (John McNamara).
367			- adapted lots of tests from other json modules
368			(idea by Chris Carline).
369	root	1.9	- documented mapping from json to perl and vice versa.
370	root	1.11	- improved the documentation by adding more examples.
371	root	1.5	- added short escaping forms, reducing the created
372			json texts a bit.
373			- added shrink flag.
374			- when flag methods are called without enable argument
375			they will by default enable their flag.
376			- considerably improved string encoding speed (at least
377			with gcc 4).
378	root	1.7	- added a test that covers lots of different characters.
379			- clarified some error messages.
380			- error messages now use correct character offset
381			with F_UTF8.
382	root	1.8	- improve the "no bytes" and "no warnings" hacks in
383			case the called functions do... stuff.
384	root	1.9	- croak when encoding to ascii and an out-of-range
385			(non-unicode) codepoint is encountered.
386	root	1.4
387	root	1.3	0.2 Fri Mar 23 00:23:34 CET 2007
388	root	1.109	- the "could not sleep without debugging release".
389	root	1.3	it should basically work now, with many bugs as
390			no production tests have been run yet.
391			- added more testcases.
392			- the expected shitload of bugfixes.
393			- handle utf8 flag correctly in decode.
394			- fix segfault in decoder.
395			- utf8n_to_uvuni sets retlen to -1, but retlen is an
396			unsigned types (argh).
397			- fix decoding of utf-8 strings.
398			- improved error diagnostics.
399			- fix decoding of 'null'.
400			- fix parsing of empty array/hashes
401			- silence warnings when we prepare the croak message.
402
403	root	1.2	0.1 Thu Mar 22 22:13:43 CET 2007
404			- first release, very untested, basically just to claim
405			the namespace.
406	root	1.1
407			0.01 Thu Mar 22 06:08:12 CET 2007
408			- original version; cloned from Convert-Scalar
409