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unreleased

5.3 support

5.3 support is being added gradually over the course of its development. This section should be updated with each relevant PR.

Note to maintainers: until 5.3 support is officially released, this section should be excluded from the release, see RELEASING.md for details.

  • Add initial OCaml 5.3 support (#487, @NathanReb, @hhugo, @nojb)

Other changes

  • Fix deriving_inline round-trip check so that it works with 5.01 <-> 5.02 migrations (#519, @NathanReb)

  • Add ppxlib's AST pretty-printing utilities in Ppxlib.Pp_ast and a ppxlib-pp-ast executable in a new separate ppxlib-tools package (#517, #525, #537, @NathanReb)

  • Change -dparsetree from a sexp output to a pretty printed AST, closer to what the compiler's -dparsetree is. (#530, @NathanReb)

  • Add Parsetree documentation comments to Ast_builder functions (#518, @patricoferris)

  • Support class type declarations in derivers with the new, optional arguments {str,sig}_class_type_decl in Deriving.add (#538, @patricoferris)

0.33.0 (2024-07-22)

  • Fix a bug where Code_path.main_module_name would not properly remove extensions from the filename and therefore return an invalid module name. (#512, @NathanReb)

  • Add -unused-type-warnings flag to the driver to allow users to disable only the generation of warning 34 silencing structure items when using [@@deriving ...] on type declarations. (#511, @mbarbin, @NathanReb)

  • Make -unused-code-warnings flag to the driver also controls the generation of warning 34 silencing structure items when using [@@deriving ...] on type declarations. (#510, @mbarbin, @NathanReb)

  • Driver: Add -unused-code-warnings=force command-line flag argument. (#490, @mbarbin)

  • new functions Ast_builder.{e,p}list_tail that take an extra tail expression/pattern argument parameter compared to Ast_builder.{e,p}list, so they can build ASTs like a :: b :: c instead of only [ a; b ]. (#498, #502, @v-gb, @NathanReb)

  • Fix Longident.parse so it also handles indexing operators such as .!(), .%(;..)<-, or Vec.(.%()) (#494, @octachron)

  • Add a special_function' variant which directly takes a Longident.t argument to avoid the issue that Longident.t cover distinct syntaxic classes which cannot be easily parsed by a common parser (#496, @octachron).

  • Keep location ranges consistent when migrating Pexp_function nodes from 5.2+ to older versions (#504, @jchavarri)

  • Fix -locations-check behaviour so it is no longer required to pass -check as well to enable location checks. (#506, @NathanReb)

0.32.1 (2024-04-23)

  • Add support for OCaml 5.2

  • Insert errors from caught located exceptions in place of the code that should have been generated by context-free rules. (#472, @NathanReb)

0.32.0 (2024-02-05)

  • Add an optional embed_errors argument to Context_free.map_top_down that controls how to deal with exceptions thrown by context-free rules. (#468, @NathanReb)

  • Fix Longident.parse so it properly handles unparenthesized dotted operators such as +. or *.. (#111, @rgrinberg, @NathanReb)

  • raising an exception does no longer cancel the whole context free phase(#453, @burnleydev1)

  • Sort embedded errors that are appended to the AST by location so the compiler reports the one closer to the beginning of the file first. (#463, @NathanReb)

  • Update Attribute.get to ignore loc_ghost. (#460, @ceastlund)

  • Add API to manipulate attributes that are used as flags (#408, @dianaoigo)

  • Update changelog to use ISO 8061 date format: YYYY-MM-DD. (#445, @ceastlund)

  • Replace Caml with Stdlib. (#427, @ceastlund)

  • When a transformation raises, the last valid AST is used as input to the upcoming transformations. All such errors are collected and appended as extension nodes to the final AST (#447, @burnleydev1)

  • Fix a small mistake in the man pages: Embededding errors is done by default with -as-pp, not with -dump-ast (#464, @pitag-ha)

  • Set appropriate binary mode when writing to stdout especially for Windows compatibility. (#466, @jonahbeckford)

0.31.0 (2023-09-21)

  • Fix support for OCaml 5.1: migrated code preserves generative functor warnings, without creating more. Locations are better preserved. (#432, @pitag-ha, @panglesd)

  • Driver: Add -unused-code-warnings command-line flag. (#444, @ceastlund)

  • Add ?warning flag to Deriving.Generator.make. (#440, @jacksonzou123 via @ceastlund)

  • Restore the "path_arg" functionality in the V3 API (#431, @ELLIOTTCABLE)

  • Expose migration/copying/etc. functions for all AST types needed by Pprintast (#454, @antalsz)

  • Preserve quoted attributes on antiquotes in metaquot (#441, @ncik-roberts)

  • Attribute namespaces: Fix semantics of reserving multi-component namespaces (#443, @ncik-roberts)

0.30.0 (2023-06-20)

  • Adopt the OCaml Code of Conduct on the repo (#426, @pitag-ha)

  • Clean up misleading attribute hints when declared for proper context. (#425, @ceastlund)

  • Ast_pattern now has ebool, pbool helper, and a new map.(#402, @burnleydev1)

  • multiple errors are now reported in metaquot. (#397, @burnleydev1)

  • Add Attribute.declare_with_attr_loc (#396, @dvulakh)

  • Add "ns" and "res" as reserved namespaces(#388, @davesnx)

  • Make quoter let binding non-recursive (#401, @sim642)

  • Fix failure of 'lift_map_with_context' in traverse by compile-time evaluation of 'fst' and 'snd' (#390, @smuenzel)

  • Driver: Bias the mapping from magic to version towards the current version, as it is usually the common case and it helps when magic numbers are ambiguous (such as on development versions) (#409, @shym)

  • Remove unnecessary test dependencies towards base and stdio (#421, @kit-ty-kate)

  • Update description to reflect that ppxlib contains more than a library (#422, @pitag-ha)

  • Add support for OCaml 5.1, excluding OCaml 5.1.0~alpha1 (#428, @shym, @Octachron , @pitag-ha, @panglesd)

  • Driver: Fix -locations-check option for coercions with ground (#428, @Octachron)

0.29.1 (2023-02-14)

  • Allow users to vendor ppxlib as-is, as well as ppx_sexp_conv in the same project (#386, @kit-ty-kate)

0.29.0 (2023-02-06)

  • Remove File_path exports. (#381, @ceastlund)

  • Add Ppxlib.Expansion_helpers with name mangling utilities from ppx_deriving (#370, @sim642)

0.28.0 (2022-10-05)

  • Make esequence right-associative. (#366, @ceastlund)

  • Deprecate unused attributes in Deriving.Generator (#368, @sim642)

  • Remove a pattern match on mutable state in a function argument. (#362, @ceastlund)

  • Add code-path manipulation attributes. (#352, @ceastlund)

  • Update context-free rules to collect expansion errors generated by ppxlib and propagate them to top level without failing. (#358 and #361, @ceastlund)

  • Add driver benchmarks (#376, @gridbugs)

0.27.0 (2022-06-14)

  • Update expansion context to leave out value name when multiple are defined at once. (#351, @ceastlund)

  • Add support for OCaml 5.0 (#348, @pitag-ha)

  • Add Code_path.enclosing_value (#349, @ceastlund)

  • Add Code_path.enclosing_module (#346, @ceastlund)

  • Expand code generated by ~enclose_intf and ~enclose_impl (#345, @ceastlund)

  • Add type annotations to code generated by metaquot (#344, @ceastlund)

  • Fix typo in description field of dune-project (#343, @ceastlund)

  • Fix Ast_pattern.many (#333, @nojb)

  • Fix quoter and optimize identifier quoting (#327, @sim642)

  • Driver, when run with --check: Allow toplevel_printer attributes (#340, @pitag-ha)

  • Documentation: Add a section on reporting errors by embedding extension nodes in the AST (#318, @panglesd)

  • Driver: In the case of ppxlib internal errors, embed those errors instead of raising to return a meaningful AST (#329, @panglesd)

  • API: For each function that could raise a located error, add a function that return a result instead (#329, @panglesd)

0.26.0 (2022-03-21)

  • Bump ppxlib's AST to 4.14/5.00 (#320, @pitag-ha)

0.25.1 (2022-06-17)

  • Add support for OCaml 5.0 (#355, @pitag-ha)

0.25.0 (2022-03-03)

  • Added error_extensionf function to the Location module (#316, @panglesd)

  • Ast patterns: add drop and as patterns (#313 by @Kakadu, review by @pitag-ha)

  • Fixed a bug resulting in disscarded rewriters in the presence of instrumentations, as well as a wrong order of rewriting (#296, @panglesd)

  • Driver: Append the last valid AST to the error in case of located exception when embedding errors (#315, @panglesd)

0.24.0 (2021-12-08)

  • Add support for OCaml 4.14 (#304, @kit-ty-kate)

  • Expand nodes before applying derivers or other inline attributes based transformation, allowing better interactions between extensions and derivers (#279, #297, @NathanReb)

  • Add support for registering ppx_import as a pseudo context-free rule (#271, @NathanReb)

  • Add input_name to the Expansion_context.Extension and Expansion_context.Deriver modules (#284, @tatchi)

  • Improve gen_symbol to strip previous unique suffix before adding a new one (#285, @ceastlund)

  • Improve name_type_params_in_td to use prefixes a, b, ... instead of v_x. (#285, @ceastlund)

  • Fix a bug in type_is_recursive and really_recursive where they would consider a type declaration recursive if the type appeared inside an attribute payload (#299, @NathanReb)

0.23.0 (2021-08-31)

  • Drop Parser from the API (#263, @pitag-ha)

  • Location: add set_filename and Error.get_location (#247, @pitag-ha)

  • Drop dependency on OMP2 (#187, @pitag-ha)

  • Make OMP1 a conflict (#255, @kit-ty-kate)

  • Drop Syntaxerr from the public API. Doesn't affect any user in the ppx universe (#244, @pitag-ha)

  • Add a lower-bound constraint for Sexplib0 (#240, @pitag-ha)

  • Fix bug due to which unwanted public binaries got installed when installing ppxlib (#223, @pitag-ha)

  • Add Keyword.is_keyword to check if a string is an OCaml keyword (#227, @pitag-ha)

  • Remove Lexer.keyword_table: use Keyword.is_keyword instead (#227, @pitag-ha)

  • Remove Lexer from the API: it was the same as the compiler-libs Lexer (#228, @pitag-ha)

  • Remove the modules Ast_magic, Compiler_version, Js, Find_version, Convert, Extra_warnings, Location_error, Select_ast and Import_for_core from the API: they are meant for internal use and aren't used by any current downstream user in the ppx universe (#230, @pitag-ha)

  • Remove compiler specific helper functions from Location. They aren't used by any current downstream user in the ppx universe (#238, @pitag-ha)

  • Allow "%a" when using Location.Error.createf (#239, @mlasson)

  • Fix in Location: make raise_errorf exception equivalent to exception Error (#242, @pitag-ha)

  • Fix in Pprintast: correctly pretty print local type substitutions, e.g. type t := ... (#261, @matthewelse)

  • Add Ast_pattern.esequence, for matching on any number of sequenced expressions e.g. do_a (); do_b (); .... (#264, @matthewelse)

  • Expose a part of Ast_io in order to allow reading AST values from binary files (#270, @arozovyk)

0.22.2 (2021-06-23)

  • Make ppxlib compatible with 4.13 compiler (#260, @kit-ty-kate)

0.22.1 (2021-06-10)

  • Fix location in parse error reporting (#257, @pitag-ha)

0.21.1 (2021-06-09)

  • Fix location in parse error reporting (#256, @pitag-ha)

0.22.0 (2021-02-04)

  • Bump ppxlib's AST to 4.12 (#193, @NathanReb)

0.21.0 (2021-01-22)

  • Fix ppxlib.traverse declaration and make it a deriver and not a rewriter (#213, @NathanReb)

  • Driver (important for bucklescript): handling binary AST's, accept any supported version as input; preserve that version (#205, @pitag-ha)

  • -as-ppx: take into account the -loc-filename argument (#197, @pitag-ha)

  • Add input name to expansion context (#202, @pitag-ha)

  • Add Driver.V2: give access to expansion context in whole file transformation callbacks of register_transformation (#202, @pitag-ha)

  • Driver: take -cookie argument into account, also when the input is a binary AST (@pitag-ha, #209)

  • run_as_ppx_rewriter: take into account the arguments -loc-filename, apply and dont-apply (#205, @pitag-ha)

  • Location.Error: add functions raise and update_loc (#205, @pitag-ha)

0.20.0 (2020-11-16)

  • Expose Ppxlib.Driver.map_signature (#194, @kit-ty-kate)

0.19.0 (2020-10-23)

  • Make ppxlib compatible with 4.12 compiler (#191, @kit-ty-kate)

0.18.0 (2020-10-06)

  • Bump ppxlib's AST to 4.11 (#180, @NathanReb)

0.17.0 (2020-09-17)

  • Add accessors for code_path and tool_name to Expansion_context.Base (#173, @jberdine)
  • Add cases methods to traversal classes in Ast_traverse (#183, @pitag-ha)

0.16.0 (2020-08-18)

  • Driver.register_transformation: add optional parameter ~instrument (#161, @pitag-ha)
  • Add missing Location.init (#165, @pitag-ha)
  • Upgrade to ocaml-migrate-parsetree.2.0.0 (#164, @ceastlund)

0.15.0 (2020-08-04)

  • Remove base and stdio dependencies (#151, @ceastlund)

  • Update README and opam description (#155, @jeremiedimino)

  • Fix Driver.partition_transformation (#156, @NathanReb)

  • Implement name mangling for ppxlib_traverse (#159, @ceastlund)

0.14.0 (2020-07-08)

  • Bump ppxlib's AST to 4.10 (#130, @NathanReb)

  • Remove omp_config from Expansion_context and replace it with tool_name (#149, @NathanReb)

  • Change undocumented Ppxlib.Driver.map_structure to return a ppxlib's structure instead of a Migrate_parsetree.Driver.some_structure. (#153, @NathanReb)

0.13.0 (2020-04-15)

  • Add 'metaquot.' prefix to disambiguate metaquote extensions (#121, @ceastlund)

  • Bump dune language to 1.11 since the cinaps extension requires at least Dune 1.11 (#126, @diml)

0.12.0 (2020-01-07)

  • Support for OCaml 4.10 (#109, @xclerc)

0.11.0 (2020-01-07)

  • Invariant check on locations (#107, @trefis)

0.10.0 (2019-11-21)

  • Do not produce a suprious empty correction when deriving_inline expands into an extension that undergoes further expansion (#86, @aalekseyev)

  • Add Ppxlib.Quoter. This module allows to generate hygienic code fragments in the spirit of ppx_deriving. (#92, @rgrinberg)

  • Allow for registering derivers on module type declarations. (#94, fix #83, @rgrinberg)

  • Fix parsing long idenitifiers. (#98, @NathanReb)

0.9.0

  • Bump AST to 4.08 (#80, @xclerc)

0.8.1

Fixed

  • Report errors according to the value of OCAML_ERROR_STYLE and OCAML_COLOR in the standalone driver (#83, @NathanReb)

0.6.0

  • Set Location.input_name to the original filename when reading a binary AST (#.., @diml)

0.5.0

  • Add an (** @inline *) to the include generated when silencing warning 32 (#58, @trefis)

  • Add Ppxlib.mk_named_sig and Ppxlib.is_polymorphic_variant (#57, @trefis)

0.4.0

  • Do not report errors about dropped or uninterpreted attributes starting with _ (#46, fix #40, @diml)

  • Fix he special_function rule for dotted operators and allow Longident.parse to parse dotted operators (#44, @Octachron)

  • Port to dune and remove use of bash (#45, @rgrinberg)

  • Ignore all attribites starting with _ (#46, @diml)

  • Reserve the reason and refmt namespaces (#46, @diml)

  • Reserve the metaocaml namespace (#50, @rgrinberg)

  • Fix attribute extraction for Otag/Rtag (#51, @xclerc)

  • Do not relocate files unless -loc-filename is passed (#55, @hhugo)

  • Preserve the filename in the output (#56, @hhugo)

0.3.1

  • Add Attribute.declare_with_name_loc (#33, @diml)

  • Let the tool name pass thought when used as a -ppx (#41, @diml)

  • Update the AST to 4.06 (#8, @xclerc)

0.3.0

  • Update the AST to 4.06 (#8, @xclerc)

  • Deprecate old references to type_conv in argument and rewriter names and add new ones mentioning deriving instead (#7, #9 @xclerc)

  • Fix compatibility with -safe-string (#10, @hhugo)

  • Restore tests (#11, @xclerc)

  • Allow to set the suffix of corrected files (#15, @diml)

  • Restore compatibility with OCaml 4.04.x (#16, @xclerc)

0.2.0

  • Make sure to import command line arguments registered with ocaml-migrate-parsetree (#5, @diml)

  • Fix an issue where cookies set from the command line sometimes disappeared (#6, @diml)

0.1.0

Initial release.