v0.10

• Added val Sexp.is_unit : t -> bool
• Enabled -safe-string

v0.9

113.43.00

• Sexps and EOF are a mess. Try to improve the situation somewhat!

  In particular, this feature makes improvements to when Parsing_whitespace sexp parser state is reported: it now distinguishes the case Parsing_toplevel_whitespace from Parsing_nested_whitespace and it's only a valid empty parse if eof happens in Parsing_toplevel_whitespace. See test diffs for examples of strings that were previously valid empty parses, but are now incomplete. One of the craziest is probably "(foo #| bar".

113.33.00

• Changes Sexp.to_string to escape all non-ASCII characters.

  Previously chars >= 127 are escaped or not depending on:

  1. other character in the string
  2. the system
  3. environment variable settings

  (2) and (3) are because String.escaped from the stdlib uses the C function isprint which is locale and OS dependent.

  This can cause invalid UTF-8 sequence to be printed by sexplib, which is annoying:

  https://github.com/janestreet/sexplib/issues/18

  Starting with this release, sexplib:

  1. copies the String.escaped function of OCaml 4.03 which escapes all non-ascii characters
  2. make sure we escape the string when it contains characters >= 127
• Clean up the documentation for sexplib, modernizing it to include ppx_sexp_conv, and breaking up the documentation between sexplib and ppx_sexp_conv. Also changed the formatting to use org-mode, so it will render properly on github. Markdown doesn't render well by default, unless you use quite different conventions about linebeaks.

• In sexp macro library, avoid returning success when there is any error reading a sexp. In particular, this prevents

  sexp resolve <(echo '(:use x)')

  from silently succeeding.

  Also, now we no longer read an included file multiple times. This lets even crazy stuff like this to work:

  $ echo 'hi ' | sexp resolve <(echo '((:include /dev/stdin) (:include /dev/stdin))')

113.24.00

• Switch code in lib subdir to ppx-style.

112.35.00

• Inline some calls that js_of_ocaml was unable to recognise as tail-recursive (cf. issue #14)

112.24.00

Minor update: documentation.

112.17.00

• Added sexp_of_ support for GADTs, and remove the not-quite-working support for of_sexp.

112.06.00

• Improved the implementation of Exn.sexp_of_t, using the unique id in exceptions in OCaml 4.02.

  We use the identifier to map exception constructors to converters.

112.01.00

• Replaced occurrences of Obj.magic 0 with Obj.magic None.

  With the former the compiler might think the destination type is always an integer and instruct the GC to ignore references to such values. The latter doesn't have this problem as options are not always integers.

111.25.00

• Fix compatibility with OCaml 4.02

111.17.00

• Make the camlp4 dependency optional

111.13.00

• In Sexplib.Std, renamed Macro as Sexp_macro.

111.11.00

• Added error locations to Macro-expansion errors.

110.01.00

• Added with sexp support for mutually recursive types with common fields.

  For instance:

  type a = { fl : float } and b = { fl : int } with sexp

  Closes #3

• Fixed the behavior of sexplib on private types.

  sexplib used to ignore the private modifier, which means generated functions had the wrong type. Now, it generates a function with the right type for sexp_of and refuses to generate anything for of_sexp.

• Added Macro.expand_local_macros, which macro expands sexps, failing on :include macros.

• Fixed Macro's handling of nested :include's which was broken with respect to paths.

  Prior to this fix, :include's were broken with respect to the path used to resolve the filename. Including a file outside the current directory which included another file relative to that one would break.

109.60.00

• Moved unix-specific code to a new object section, sexplib_unix

109.53.00

• Changed sexp_of_float to (usually) use as few digits as possible, without losing precision.

• Split the part of Sexplib that depends on Num into a separate library, Sexplib_num.

  This was done to eliminate the dependence of Core_kernel on Num, which is not usable on javascript.

109.52.00

• Added a Macro module, with load_sexp* functions that support file includes and templates.

  The following new syntaxes are supported:

      (:include filename)
  (:let f (arg1 ... argn) sexp1 ... sexpn)
  (:use f (arg1 valn) ... (argn valn))
  (:concat a1 ... an)

• Added support to with sexp for a subset of GADTs.

  The new support is for types that use existentially quantified variables or plain variants written with GADT syntax.

  Existentially quantified variables still have to be wrapped with sexp_opaque generate compiling code.

• Fixed a type error in the code generated by with sexp in some cases of variant inclusions.

109.20.00

• Renamed converter generated by with sexp for polymorphic variants so it is hidden from the toplevel.

  of_sexp created a value named <type>_of_sexp__ to handle polymorphic variants. To hide it from the toplevel, we renamed it as __<type>_of_sexp__. We kept the __ suffix to avoid any confusion with a type named __<type>.

109.12.00

• A tiny lexer improvement in lexer.mll. Used lexbuf.lex_{start|curr}_pos instead of lexbuf.lex_{start|curr}_p.pos_cnum for computing the length of a lexeme since the difference is the same.

109.10.00

• Improved error messages in presence of GADTs.
• Made with sexp work with types containing as in signatures.

109.09.00

• Fixed an unused rec warning in the code generated by pa_sexp in rare cases.

2012-07-15

• Added support for S-expression default record fields.
• Added syntax for S-expression comments and for nested block comments.
• Fixed a few minor bugs and inconsistencies in the parsers and updated their whitespace handling to conform with the upcoming OCaml 4.00 compiler. The parser specification now also supports Menhir.
• Rewrote README in Markdown and improved documentation.
• Minor bug fix in the preprocessing module.
• Eliminated new warnings available in OCaml 4.00.

2011-09-18

• Improved documentation.

2011-09-15

• Fixes to improve package dependency resolution.

2011-07-05

• Fixed a parser position bug. Parser positions passed by the user were not updated correctly.
• Internal code beautification.

2011-07-04

• Internal updates to sync with Jane Street.

2011-01-30

• Fixed a code generation bug with toplevel entries.

  Thanks to Yong Lu lyongu@gmail.com for the report!

2010-12-27

• Added support for MoreLabels.Hashtbl and improved reporting of error locations with preprocessor.

2010-12-26

• Worked around a compiler bug that is expected to be fixed in OCaml 3.12.1. This workaround temporarily removes the interface for module Conv (conv.mli), thus exposing the internals. This should not cause any problems for end users as long as they do not depend on the exported internal representations. The interface will become constrained again as soon as the fixed compiler is out.

2010-12-22

Major release.

• Merged with Jane Street version. This has caused an API-change that requires "open Sexplib.Conv" at the top of files that use the syntax extension.

• Renamed functions:

  • sexp_of_lazy -> sexp_of_lazy_t
  • lazy_of_sexp -> lazy_t_of_sexp
• Some standard library modules are now re-exported with predefined S-expression converters in module Conv.

2010-09-25

• Fixed inferred types of generated functions when dealing with arrow types.

2010-08-26

• Fixed a lexer bug when parsing comments.

2010-05-21

• Added support for sexp_bool record field annotations.

2010-05-18

• Improved performance of converting S-expressions to strings.

2010-04-12

• Changed API of Of_sexp_error exception.

2010-04-07

• Added of_(big)string_conv_exn functions.

2010-04-01

• Merged with Jane Street version.

  Major new features (various functions):

  • Type-annotated parsing for better error messages
  • Greatly improved performance of exception converters

2009-12-21

• Improved saving of files.

2009-10-12

• Added sexp_array record field extension.

2009-09-19

• Added missing variant type cases.
• Fixed handling of variance annotations.

2009-09-15

• Internal cleanups.

2009-07-28

• Added better support for conversion of exception types.

2009-06-23

• Fixed build problem.

  Thanks to Sylvain Le Gall gildor@ocamlcore.org for the patch!

2009-05-08

• Fixed build problems on Windows and OCamlMakefile issues.

  Thanks to Sylvain Le Gall gildor@ocamlcore.org for the patch!

2009-04-22

• Added macro support for all types of vectors, matrices, and for bigstrings.

2009-04-21

• Merged with Jane Street version, no user-relevant changes.

2009-03-09

• Merged with Jane Street version, no user-relevant changes.

2009-03-01

• Fixed build problem on Mac OS X by updating OCamlMakefile.

2009-01-20

• Automatically add S-expression pretty-printers to toplevels.

2008-09-30

• Added a new feature: sexp_opaque. It prevents the need for / use of type converters for a given type in a particular type context.

  Removed abstract types to unify them with this new concept.

2008-09-29

• Added a new feature: sexp_list. This is similar to the handling of sexp_option. By default an empty list is assumed for unspecified records using sexp_list as qualifier. Such record fields bound to empty lists will also not be printed anymore for better readability.

2008-09-23

• Added missing Not_found-exception to standard exception converters.

2008-08-20

• Removed dependency on threads. Fixed build problems.

2008-08-08

• Nifty new feature: exceptions can now be converted to S-expressions, too! The "with sexp" syntax extension can be used with exceptions, thus registering a conversion function. A global exception conversion function can then be called to convert an arbitrary exception into an S-expression, which can then be printed out. This should greatly improve readability of uncaught exceptions while making life extremely easy for the developer.
• Renamed the ParseError exception to Parse_error to be more compliant with Jane Street naming conventions.

2008-07-25

• Added utilities for conversion error handling. Minor fixes.

2008-04-24

• Made Sexp-interface manifest.

2008-03-20

• Fixed META-file (missing num dependency).

2008-03-17

• Improved META-file.

2008-03-13

• Fully allow function types in converters. Raise runtime exceptions on converting from S-expressions instead when function type encountered.

2008-02-11

• Fixed code generation problems with variance annotations in signatures, and empty types.

2007-12-17

• Added support for generating signature entries for S-expression converters. Thanks to Till Varoquaux till.varoquaux@gmail.com for the patch!

2007-11-29

• Added support for converting big_int, nat, num, and ratio.

2007-11-26

• Added support for parsing from bigstrings (char bigarrays).

2007-11-02

• Added syntax support for option types to use the ordinary sum type syntax. This should improve readability. The old syntax will be accepted, too, if Conv.read_old_option_format is set to true (this is currently the default). The old format will be used for writing if Conv.write_old_option_format is true (currently the default). The old syntax is deprecated and will probably not be supported by default in the near future. Reading new-style option values will always succeed.

2007-09-14

• Fixed bug in S-expression preprocessor concerning record field names.

2007-08-06

• Added support for converting functions to S-expressions.

2007-07-20

• Fixed position information and improved speed of S-expression parser. Fixed S-expression macro bug concerning contained polymorphic variants.

2007-06-28

• Improved Sexplib code generation.

2007-06-22

• Fixed escaping bug in S-expression parser.

2007-06-01

• Added correct handling of recursive types + test case.

2007-04-18

• Added missing conversion functions from S-expressions to pairs and triples.

2007-03-21

• Updated OCamlMakefile.

2007-03-02

• Improved error messages when parsing illegal type definitions.

2007-01-30

• Added triple conversions.

2006-11-22

• Updated OCamlMakefile.

2006-10-13

• Improved checking of records for extra or duplicate fields.

2006-09-06

• Added support for polymorphic record fields.

2006-09-05

• Added support for manifest types.

2006-08-16

• Improved error messages.

2006-07-28

• Added a new, hand-written S-expression parser that supports partial parsing and should be approx. 10x faster than the previous one.

2006-06-20

• Fixed a code generation problem leading to compilation errors concerning the use of type aliases within polymorphic variant type definitions.

  This fix also solves potential erroneous appearances of backtracking exceptions in user code.

2006-03-21

• Added -for-pack option to Makefile and cleaned up distribution for a new public release.

2006-03-13

• Sexplib now accepts capitalized booleans.

2006-03-03

• Added customizable indentation levels.
• Improved documentation.
• Fixed API-problem concerning backward compatibility.

2006-03-01

• Added a missing flush for string conversions with a buffer.

2006-02-08

• Eliminated unused variable warnings in Sexplib-generated code.

2006-01-11

• Added functions for pretty-printing to buffers.
• Improved performance of outputting S-expressions to channels.

2006-01-09

• Added functions load_sexp and load_sexps.

2006-01-04

• Changed float conversion from %E to %G (more readable).

2005-12-28

• Made machine representation for S-expressions more compact

2005-12-15

• Fixed a problem appearing with OCaml-release 3.08.4: CamlP4 obviously performs more strict checking on some constructs now and crashed with an exception when generating S-expression code for records containing only one field ("singleton tuple problem"). This problem is fixed now.

2005-11-25

• Fixed problem with type variables that could not be generalized.

2005-11-23

• Added a missing case in type definitions (path alias)

2005-11-17

• Major release: 2.0

  Fixed a major design problem. The user now has to pass lex buffers instead of channels to input-functions. Reason: trailing characters in channels were lost due to ocamllex buffering them in the non-exposed lex buffer. This lex buffer is now exposed. The functions have been renamed ("input_X" -> "scan_X") to reflect this change.

2005-11-16

• Added label to conversion function "input_cnv_sexps".

2005-11-11

• Fixed a bug in the pretty-printer: strings in atoms were not escaped in the function "to_string_mach" (and therefore also "to_string").

2005-11-07

• Initial release.