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CHANGELOG
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Changelog
=========
----
4.0x
----
4.0.2 (2024-12-11)
~~~~~~~~~~~~~~~~~~
- CMake build system: fixed bug
`#515 <https://github.com/skvadrik/re2c/issues/515>`_ where language-specific
binaries erroneously defaulted to generating code for C.
- Playground: address bar now reflects navigation between examples, editors use
a more high-contrast CSS theme.
4.0.1 (2024-11-25)
~~~~~~~~~~~~~~~~~~
- Added missing doc sources to the distribution tarball
(`#503 <https://github.com/skvadrik/re2c/issues/503>`_)
- Reworked C/C++ examples to avoid using new configuration aliases until the
world has updated to re2c 4.0, made them compatible with C.
- A few build system changes: increased CMake minimum required version to 3.15,
added missing dependencies on doc sources in Makefile.am.
- Fixed typos in docs.
4.0 (2024-11-19)
~~~~~~~~~~~~~~~~
- Added a generic technique for describing language backends based on the idea
of syntax files (`#450 <https://github.com/skvadrik/re2c/issues/450>`_).
- Added support for new languages: D, Haskell, Java, JavaScript, OCaml, Python,
V, Zig.
- Added new record API for all languages (enabled with ``--api record``,
``re2c:api = record``) and made it the default API for Haskell and OCaml.
- Renamed former "default API" to "simple API", implemented it for all backends
except Haskell and OCaml, and enabled by default API for C, D, Java,
JavaScript, Python, V and Zig.
- Added new code generation model - recursive functions (enabled with
``--recursive-functions``), primarily to be used for functional languages.
- Added options:
+ ``--syntax <file>``
+ ``--api simple``
+ ``--api generic``
+ ``--api record``
+ ``--goto-label``
+ ``--recursive-functions``
+ ``--lang none``
+ ``--lang d``
+ ``--lang haskell``
+ ``--lang java``
+ ``--lang js``
+ ``--lang ocaml``
+ ``--lang python``
+ ``--lang v``
+ ``--lang zig``
+ ``--leftmost-captvars``
+ ``--posix-captvars``
+ ``--captvars`` (alias for ``--leftmost-captvars``)
+ ``--captures`` (alias for ``--leftmost-captures``)
- Added configurations:
+ ``re2c:api = simple`` (alias for ``re2c:api = default``)
+ ``re2c:api = generic`` (alias for ``re2c:api = custom``)
+ ``re2c:api = record``
+ ``re2c:computed-gotos`` (alias for ``re2c:cgoto``)
+ ``re2c:cond:abort``
+ ``re2c:tags:negative``
+ ``re2c:leftmost-captvars``
+ ``re2c:posix-captvars``
+ ``re2c:captvars`` (alias for ``re2c:leftmost-captvars``)
+ ``re2c:captures`` (alias for ``re2c:leftmost-captures``)
+ ``re2c:monadic``
+ ``re2c:fn:sep``
+ ``re2c:[define:]YYFN``
+ ``re2c:[define:]YYINPUT``
+ ``re2c:[define:]YYGETACCEPT``
+ ``re2c:[define:]YYSETACCEPT``
+ ``re2c:[define:]YYCOPYSTAG``
+ ``re2c:[define:]YYCOPYMTAG``
+ ``re2c:[define:]YYGETCOND`` (alias for ``re2c:[define:]YYGETCONDITION``)
+ ``re2c:[define:]YYSETCOND`` (alias for ``re2c:[define:]YYSETCONDITION``)
+ ``re2c:[variable:]yyfill``
+ ``re2c:[variable:]yynmatch``
+ ``re2c:[variable:]yypmatch``
+ ``re2c:[variable:]yych:literals``
- All configurations that have ``define:`` or ``variable:`` part in their name
now have an alias without this part.
- Added new block types:
+ ``/*!svars:re2c ... */``
+ ``/*!mvars:re2c ... */``
- Flex-style opening/closing braces ``%{`` and ``%}`` for block start/end
markers now work for all block types.
- Added syntax file feature lists:
+ ``supported_apis`` with values from the list:
``simple``, ``generic``, ``record``
+ ``supported_api_styles`` with values from the list:
``free-form``, ``functions``
+ ``supported_code_models`` with values from the list:
``goto-label``, ``loop-switch``, ``recursive-functions``
+ ``supported_targets`` with values from the list:
``code``, ``dot``, ``skeleton``
+ ``supported_features`` with values from the list:
``nested-ifs``, ``bitmaps``, ``computed-gotos``, ``case-ranges``,
``tags``, ``captures``, ``captvars``, ``monadic``, ``unsafe``
- Added syntax file language-specific options:
+ ``semicolons``
+ ``backtick_quoted_strings``
+ ``single_quoted_strings``
+ ``indentation_sensitive``
+ ``wrap_blocks_in_braces``
- Added syntax file code templates:
+ ``code:var_local``
+ ``code:var_global``
+ ``code:const_local``
+ ``code:const_global``
+ ``code:array_local``
+ ``code:array_global``
+ ``code:array_elem``
+ ``code:enum``
+ ``code:enum_elem``
+ ``code:assign``
+ ``code:type_int``
+ ``code:type_uint``
+ ``code:type_cond_enum``
+ ``code:type_yybm``
+ ``code:type_yytarget``
+ ``code:cmp_eq``
+ ``code:cmp_ne``
+ ``code:cmp_lt``
+ ``code:cmp_gt``
+ ``code:cmp_le``
+ ``code:cmp_ge``
+ ``code:if_then_else``
+ ``code:if_then_else_oneline``
+ ``code:switch``
+ ``code:switch_cases``
+ ``code:switch_cases_oneline``
+ ``code:switch_case_range``
+ ``code:switch_case_default``
+ ``code:loop``
+ ``code:continue``
+ ``code:goto``
+ ``code:fndecl``
+ ``code:fndef``
+ ``code:fncall``
+ ``code:tailcall``
+ ``code:recursive_functions``
+ ``code:fingerprint``
+ ``code:line_info``
+ ``code:abort``
+ ``code:yydebug``
+ ``code:yypeek``
+ ``code:yyskip``
+ ``code:yybackup``
+ ``code:yybackupctx``
+ ``code:yyskip_yypeek``
+ ``code:yypeek_yyskip``
+ ``code:yyskip_yybackup``
+ ``code:yybackup_yyskip``
+ ``code:yybackup_yypeek``
+ ``code:yyskip_yybackup_yypeek``
+ ``code:yybackup_yypeek_yyskip``
+ ``code:yyrestore``
+ ``code:yyrestorectx``
+ ``code:yyrestoretag``
+ ``code:yyshift``
+ ``code:yyshiftstag``
+ ``code:yyshiftmtag``
+ ``code:yystagp``
+ ``code:yymtagp``
+ ``code:yystagn``
+ ``code:yymtagn``
+ ``code:yycopystag``
+ ``code:yycopymtag``
+ ``code:yygetaccept``
+ ``code:yysetaccept``
+ ``code:yygetcond``
+ ``code:yysetcond``
+ ``code:yygetstate``
+ ``code:yysetstate``
+ ``code:yylessthan``
+ ``code:yybm_filter``
+ ``code:yybm_match``
- Added global variables in syntax files:
+ ``nl``
+ ``indent``
+ ``dedent``
+ ``topindent``
- Added global conditionals in syntax files:
+ ``.api.simple``
+ ``.api.generic``
+ ``.api.record``
+ ``.api_style.functions``
+ ``.api_style.freeform``
+ ``.case_ranges``
+ ``.code_model.goto_label``
+ ``.code_model.loop_switch``
+ ``.code_model.recursive_functions``
+ ``.date``
+ ``.loop_label``
+ ``.monadic``
+ ``.start_conditions``
+ ``.storable_state``
+ ``.unsafe``
+ ``.version``
- Added warning ``-Wundefined-syntax-config``.
- Warnings that indicate serious issues are now turned on by default
(and can be disabled with ``-Wno-<warning>`` options.
- Added configure options:
+ ``--enable-syntax`` (Autoconf)
+ ``RE2C_REBUILD_SYNTAX`` (CMake)
- Dropped support for function-like API style for Rust.
(it was hard to use, if at all possible)
- Added online playground that allows one to run re2c in a web browser:
https://re2c.org/playground.
- Infra work on Github Actions CI.
----
3.0x
----
3.1 (2023-07-19)
~~~~~~~~~~~~~~~~
- Added capturing groups with leftmost greedy semantics:
+ Enabled with ``--leftmost-captures`` option or ``re2c:leftmost_captures``
configuration
(`55de79d8 <https://github.com/skvadrik/re2c/commit/55de79d8>`_,
`3a98b543 <https://github.com/skvadrik/re2c/commit/3a98b543>`_).
- Added non-capturing groups:
+ Added new syntax ``(! ...)`` for non-capturing groups
(`1edd25d3 <https://github.com/skvadrik/re2c/commit/1edd25d3>`_,
`b813c9b4 <https://github.com/skvadrik/re2c/commit/b813c9b4>`_,
`338806b9 <https://github.com/skvadrik/re2c/commit/338806b9>`_).
+ Added the ability to flip defaults: make ``(...)`` capturing and ``(! ...)``
non-capturing with ``--invert-captures`` option or ``re2c:invert_captures``
configuration
(`20030ff1 <https://github.com/skvadrik/re2c/commit/20030ff1>`_,
`ce756195 <https://github.com/skvadrik/re2c/commit/ce756195>`_).
- Regenerated Unicode include header to support a newer standard
(`e3ec2597 <https://github.com/skvadrik/re2c/commit/e3ec2597>`_).
- Published TDFA paper: https://arxiv.org/abs/2206.01398, co-authored with
Angelo Borsotti
(`fa94d9c7 <https://github.com/skvadrik/re2c/commit/fa94d9c7>`_).
- Removed experimental algorithms that are superseded by TDFA(1) and
generally less efficient:
+ Removed staDFA algorithm and deprecated ``--stadfa`` option
(`ac5c06cc <https://github.com/skvadrik/re2c/commit/ac5c06cc>`_).
+ Removed TDFA(0) algorithm and deprecated ``--no-lookahead`` option
(`dc8f264a <https://github.com/skvadrik/re2c/commit/dc8f264a>`_).
+ (libre2c) Removed backward-matching algorithm
(`27256be1 <https://github.com/skvadrik/re2c/commit/27256be1>`_).
+ (libre2c) Removed Kuklewicz POSIX disambiguation algorithm
(`aa97b014 <https://github.com/skvadrik/re2c/commit/aa97b014>`_).
+ (libre2c) Removed GTOP shortest path finding algorithm
(`511a030c <https://github.com/skvadrik/re2c/commit/511a030c>`_).
- Bug fixes:
+ Fixed parsing of raw UTF-8 characters in Flex compatibility mode
(`d87f86ed <https://github.com/skvadrik/re2c/commit/d87f86ed>`_).
+ Added header file to the dependencies generated with ``--depfile`` option
(`f807f763 <https://github.com/skvadrik/re2c/commit/f807f763>`_
and `2dda36aa <https://github.com/skvadrik/re2c/commit/2dda36aa>`_).
+ Fixed stack overflow on large regular expressions by rewriting recursive
functions in iterative form
(`46a9b4c4 <https://github.com/skvadrik/re2c/commit/46a9b4c4>`_,
`aaf68292 <https://github.com/skvadrik/re2c/commit/aaf68292>`_,
`02e5d797 <https://github.com/skvadrik/re2c/commit/02e5d797>`_,
`5fffb187 <https://github.com/skvadrik/re2c/commit/5fffb187>`_)
and limited stack to 256K on GithubActions CI
(`111ee5da <https://github.com/skvadrik/re2c/commit/111ee5da>`_).
- Build system:
+ Added minimal http://bazel.build integration
(`3205c867 <https://github.com/skvadrik/re2c/commit/3205c867>`_).
+ Added configure option ``--enable-parsers`` that regenerates bison parsers
(`9e0dbd3c <https://github.com/skvadrik/re2c/commit/9e0dbd3c>`_).
+ Added CMake option ``RE2C_REBUILD_PARSERS``
(`6e91c22d <https://github.com/skvadrik/re2c/commit/6e91c22d>`_).
+ With CMake, fixed documentation generation on Windows.
- Codebase improvements:
+ Moved the entire codebase to C++11.
+ Added uniform error handling (return codes are now properly checked and
returned to the caller).
+ Reorganized codegen subsystem in four well-defined phases (analyze,
generate, fixup, render) and separated codegen from parsing phase.
+ Improved memory allocation by using slab allocators instead of global free
lists.
+ Moved to pure API for bison parsers.
+ Unified code style.
- Testing:
+ Added ``--verbose`` flag to run_tests.py and suppressed verbose output by
default.
+ Multiple improvements of continuous testing with GithubActions.
3.0 (2022-01-27)
~~~~~~~~~~~~~~~~
- Added code generation backend for Rust:
+ Enabled with ``--lang rust`` option.
+ A new ``re2rust`` binary (built by default, or configured with
``--enable-rust`` Autoconf option and ``RE2C_BUILD_RE2RUST`` CMake option).
- Added options:
+ ``--loop-switch``
+ ``--no-unsafe``
- Added configurations;
+ ``re2c:label:yyloop``
+ ``re2c:unsafe``
- Renamed options to use common naming scheme. The old names are supported as
aliases, so the change does not break existing code. Documentation has been
updated to use new names.
+ ``--api`` is a new alias for ``--input``
+ ``--ebcdic`` is a new alias for ``--ecb``
+ ``--ucs2`` is a new alias for ``--wide-chars``
+ ``--utf32`` is a new alias for ``--unicode``
+ ``--utf16`` is a new alias for ``--utf-16``
+ ``--utf8`` is a new alias for ``--utf-8``
+ ``--header`` is a new alias for ``--type-header``
- Renamed configurations to use common naming scheme and support proper scoping
under subcategories such as ``:define``, ``:label``, ``:variable``, etc. The
old names are supported as aliases, so the change does not break existing
code. Documentation has been updated to use new names.
+ ``re2c:api`` is a new alias for ``re2c:flags:input``
+ ``re2c:bit-vectors`` is a new alias for ``re2c:flags:bit-vectors``
+ ``re2c:case-insensitive`` is a new alias for ``re2c:flags:case-insensitive``
+ ``re2c:case-inverted`` is a new alias for ``re2c:flags:case-inverted``
+ ``re2c:case-ranges`` is a new alias for ``re2c:flags:case-ranges``
+ ``re2c:cond:prefix`` is a new alias for ``re2c:condprefix``
+ ``re2c:cond:enumprefix`` is a new alias for ``re2c:condenumprefix``
+ ``re2c:computed-gotos`` is a new alias for ``re2c:flags:computed-gotos``
+ ``re2c:computed-gotos:threshold`` is a new alias for ``re2c:cgoto:threshold``
+ ``re2c:debug-output`` is a new alias for ``re2c:flags:debug-output``
+ ``re2c:encoding:ebcdic`` is a new alias for ``re2c:flags:ecb``
+ ``re2c:encoding:utf32`` is a new alias for ``re2c:flags:unicode``
+ ``re2c:encoding:ucs2`` is a new alias for ``re2c:flags:wide-chars``
+ ``re2c:encoding:utf16`` is a new alias for ``re2c:flags:utf-16``
+ ``re2c:encoding:utf8`` is a new alias for ``re2c:flags:utf-8``
+ ``re2c:encoding-policy`` is a new alias for ``re2c:flags:encoding-policy``
+ ``re2c:empty-class`` is a new alias for ``re2c:flags:empty-class``
+ ``re2c:header`` is a new alias for ``re2c:flags:type-header``
+ ``re2c:label:prefix`` is a new alias for ``re2c:labelprefix``
+ ``re2c:label:yyfill`` is a new alias for ``re2c:label:yyFillLabel``
+ ``re2c:label:start`` is a new alias for ``re2c:startlabel``
+ ``re2c:nested-ifs`` is a new alias for ``re2c:flags:nested-ifs``
+ ``re2c:posix-captures`` is a new alias for ``re2c:flags:posix-captures``
+ ``re2c:tags`` is a new alias for ``re2c:flags:tags``
+ ``re2c:variable:yych:conversion`` is a new alias for ``re2c:yych:conversion``
+ ``re2c:variable:yych:emit`` is a new alias for ``re2c:yych:emit``
+ ``re2c:variable:yybm:hex`` is a new alias for ``re2c:yybm:hex``
+ ``re2c:unsafe`` is a new alias for ``re2c:flags:unsafe``
- Added directive alias ``conditions:re2c`` for ``types:re2c``.
- Multiple small changes in code generation, including some formatting changes
that result in large diffs in the generated code:
+ Do not allocate indices for unused state labels (this results in a change in
state enumeration), commits
`919570c4 <https://github.com/skvadrik/re2c/commit/919570c4>`_ and
`82b704f6 <https://github.com/skvadrik/re2c/commit/82b704f6>`_.
+ Do not generate redundant ``YYPEEK`` statements, commit
`cca31d22 <https://github.com/skvadrik/re2c/commit/cca31d22>`_.
+ Do not generate ``YYDEBUG`` statements for unused states labels, commit
`a46f01e6 <https://github.com/skvadrik/re2c/commit/a46f01e6>`_.
+ C backend: change formatting of switch statements, commit
`ed88e12e <https://github.com/skvadrik/re2c/commit/ed88e12e>`_.
+ Go backend: render continuous character ranges in compact form, commit
`09161b14 <https://github.com/skvadrik/re2c/commit/09161b14>`_.
+ Mark start and end of included .re files with line directives, commit
`48e83fca <https://github.com/skvadrik/re2c/commit/48e83fca>`_.
- A fix to limit maximum allowed NFA and DFA size (to avoid out of memory
crashes and stack overflows), commit
`a3473fd7 <https://github.com/skvadrik/re2c/commit/a3473fd7>`_.
- A fix to correctly compute fixed tags in trailing context, commit
`68e1ab71 <https://github.com/skvadrik/re2c/commit/68e1ab71>`_.
- A fix to generate non-overlapping names for s-tag and m-tag variables, commit
`7c6b5c95 <https://github.com/skvadrik/re2c/commit/7c6b5c95>`_.
- Infrastructural: added support for CMake presets.
- Updated documentation.
- Backwards-incompatible changes that are unlikely to affect any users:
+ Restrict lexical contexts where ``%{`` is recognized as a block start,
commit `dba7d055 <https://github.com/skvadrik/re2c/commit/dba7d055>`_.
+ Emit an error when repetition lower bound exceeds upper bound, commit
`039c1894 <https://github.com/skvadrik/re2c/commit/039c1894>`_.
----
2.2x
----
2.2 (2021-08-01)
~~~~~~~~~~~~~~~~
- Added named blocks and block lists in directives.
- Added local blocks ``/*!local:re2c ... */``.
- Added in-block ``!include`` directive.
- Added in-block ``!use`` directive.
- Allowed reusable blocks without ``-r --reusable`` option.
- Allowed customizing the generated code with configurations for directives
``max:re2c``, ``maxnmatch:re2c``, ``stags:re2c``, ``mtags:re2c`` and
``types:re2c`` (see directive descriptions for details).
- Forbid arbitrary text at the end of ``max:re2c`` directive. This may break
backwards compatibility, although it is unlikely that this was used by anyone.
The change was necessary in order to allow customization of the generated code
with configurations.
- Deprecated configurations ``flags:i``, ``flags:no-debug-info`` in favour of
the global options ``-i``, ``--no-debug-info``.
- Reimplemented re2c test runner in Python (thanks to
`Serghei Iakovlev <https://github.com/sergeyklay>`_). Improved integration
with GitHub Actions.
- Changes in the experimental libre2c library: added new algorithms that
construct t-string or extract submatch on all repetitions; added TDFA
benchmark written in Java by Angelo Borsotti.
- Updated documentation.
----
2.1x
----
2.1.1 (2021-03-27)
~~~~~~~~~~~~~~~~~~
- Added missing CMakeLists.txt to release tarballs
(`#346 <https://github.com/skvadrik/re2c/issues/346>`_).
2.1 (2021-03-26)
~~~~~~~~~~~~~~~~
- Added GitHub Actions CI for Linux, macOS and Windows and fixed numerous build
issues on those platforms (thanks to
`Serghei Iakovlev <https://github.com/sergeyklay>`_).
- Added benchmarks for submatch extraction in lexer generators (ragel vs.
kleenex vs. re2c with TDFA(0), TDFA(1) or sta-DFA algorithms).
+ New Autotools (configure) options: ``--enable-benchmarks``,
``--enable-benchmarks-regenerate``
+ New CMake options: ``-DRE2C_BUILD_BENCHMARKS``, ``-DRE2C_REGEN_BENCHMARKS``
+ New `json2pgfplot.py
<https://github.com/skvadrik/re2c/blob/master/benchmarks/json2pgfplot.py>`_
script that converts benchmark results in JSON to a PDF with bar charts
- Added option ``--depfile <filename>`` to generate build dependency files
(allows to track ``/*!include:re2c*/`` dependencies in the build system).
- Added option ``--fixed-tags <none | all | toplevel>`` and improved fixed-tag
optimization to work with nested tags.
- Added lzip to the distribution tarballs.
- Added registerless-TDFA algorithm in the experimental libre2c library.
- Explicitly disallowed invalid configuration when ``-f``, ``--storable-state``
option is used, but ``YYFILL`` is disabled
(`#306 <https://github.com/skvadrik/re2c/issues/306>`_).
- Fixed bug in UTF-8 decode for 4-bytes rune
(`#307 <https://github.com/skvadrik/re2c/pull/307>`_, thanks to
`Satoshi Yasushima <https://github.com/s-yasu>`_).
- Fixed bugs in rare cases of the end-of-input rule ``$`` usage
(`277f0295 <https://github.com/skvadrik/re2c/commit/277f0295fc77a2dad3b9838e45f787319b54a25f>`_,
`68611a57 <https://github.com/skvadrik/re2c/commit/68611a57a9683c05801255b35ba6217b91391dd8>`_
and `a9d582f9 <https://github.com/skvadrik/re2c/commit/a9d582f9d2a6d123aa55f3b8b73076aae7cb5616>`_).
- Optimized ``--skeleton`` generation time.
- Renamed internal option ``--dfa`` to ``--nested-negative-tags``.
- Updated documentation for end of input handling and submatch extraction.
----
2.0x
----
2.0.3 (2020-08-22)
~~~~~~~~~~~~~~~~~~
- Fix issues when building re2c as a CMake subproject
(`#302 <https://github.com/skvadrik/re2c/pull/302>`_:
Using CMake add_subdirectory fails)
- Final corrections in the SIMPA article "RE2C: A lexer generator based on
lookahead-TDFA", https://doi.org/10.1016/j.simpa.2020.100027
2.0.2 (2020-08-08)
~~~~~~~~~~~~~~~~~~
- Enable re2go building by default.
- Package CMake files into release tarball.
2.0.1 (2020-07-29)
~~~~~~~~~~~~~~~~~~
- Updated version for CMake build system (forgotten in release 2.0).
- Added a short article about re2c for the Software Impacts journal.
2.0 (2020-07-20)
~~~~~~~~~~~~~~~~
- Added new code generation backend for Go and a new ``re2go`` program
(`#272 <https://github.com/skvadrik/re2c/issues/272>`_: Go support).
Added option ``--lang <c | go>``.
- Added CMake build system as an alternative to Autotools
(`#275 <https://github.com/skvadrik/re2c/pull/275>`_:
Add a CMake build system (thanks to ligfx),
`#244 <https://github.com/skvadrik/re2c/issues/244>`_: Switching to CMake).
- Changes in generic API:
+ Removed primitives ``YYSTAGPD`` and ``YYMTAGPD``.
+ Added primitives ``YYSHIFT``, ``YYSHIFTSTAG``, ``YYSHIFTMTAG``
that allow to express fixed tags in terms of generic API.
+ Added configurations ``re2c:api:style`` and ``re2c:api:sigil``.
+ Added named placeholders in interpolated configuration strings.
- Changes in reuse mode (``-r, --reuse`` option):
+ Do not reset API-related configurations in each `use:re2c` block
(`#291 <https://github.com/skvadrik/re2c/issues/291>`_:
Defines in rules block are not propagated to use blocks).
+ Use block-local options instead of last block options.
+ Do not accumulate options from rules/reuse blocks in whole-program options.
+ Generate non-overlapping YYFILL labels for reuse blocks.
+ Generate start label for each reuse block in storable state mode.
- Changes in start-conditions mode (``-c, --start-conditions`` option):
+ Allow to use normal (non-conditional) blocks in `-c` mode
(`#263 <https://github.com/skvadrik/re2c/issues/263>`_:
allow mixing conditional and non-conditional blocks with -c,
`#296 <https://github.com/skvadrik/re2c/issues/296>`_:
Conditions required for all lexers when using '-c' option).
+ Generate condition switch in every re2c block
(`#295 <https://github.com/skvadrik/re2c/issues/295>`_:
Condition switch generated for only one lexer per file).
- Changes in the generated labels:
+ Use ``yyeof`` label prefix instead of ``yyeofrule``.
+ Use ``yyfill`` label prefix instead of ``yyFillLabel``.
+ Decouple start label and initial label (affects label numbering).
- Removed undocumented configuration ``re2c:flags:o``, ``re2c:flags:output``.
- Changes in ``re2c:flags:t``, ``re2c:flags:type-header`` configuration:
filename is now relative to the output file directory.
- Added option ``--case-ranges`` and configuration ``re2c:flags:case-ranges``.
- Extended fixed tags optimization for the case of fixed-counter repetition.
- Fixed bugs related to EOF rule:
+ `#276 <https://github.com/skvadrik/re2c/issues/276>`_:
Example 01_fill.re in docs is broken
+ `#280 <https://github.com/skvadrik/re2c/issues/280>`_:
EOF rules with multiple blocks
+ `#284 <https://github.com/skvadrik/re2c/issues/284>`_:
mismatched YYBACKUP and YYRESTORE
(Add missing fallback states with EOF rule)
- Fixed miscellaneous bugs:
+ `#286 <https://github.com/skvadrik/re2c/issues/286>`_:
Incorrect submatch values with fixed-length trailing context.
+ `#297 <https://github.com/skvadrik/re2c/issues/297>`_:
configure error on ubuntu 18.04 / cmake 3.10
- Changed bootstrap process (require explicit configuration flags and a path to
re2c executable to regenerate the lexers).
- Added internal options ``--posix-prectable <naive | complex>``.
- Added debug option ``--dump-dfa-tree``.
- Major revision of the paper "Efficient POSIX submatch extraction on NFA".
----
1.3x
----
1.3 (2019-12-14)
~~~~~~~~~~~~~~~~
- Added option: ``--stadfa``.
- Added warning: ``-Wsentinel-in-midrule``.
- Added generic API primitives:
+ ``YYSTAGPD``
+ ``YYMTAGPD``
- Added configurations:
+ ``re2c:sentinel = 0;``
+ ``re2c:define:YYSTAGPD = "YYSTAGPD";``
+ ``re2c:define:YYMTAGPD = "YYMTAGPD";``
- Worked on reproducible builds
(`#258 <https://github.com/skvadrik/re2c/pull/258>`_:
Make the build reproducible).
----
1.2x
----
1.2.1 (2019-08-11)
~~~~~~~~~~~~~~~~~~
- Fixed bug `#253 <https://github.com/skvadrik/re2c/issues/253>`_:
re2c should install unicode_categories.re somewhere.
- Fixed bug `#254 <https://github.com/skvadrik/re2c/issues/254>`_:
Turn off re2c:eof = 0.
1.2 (2019-08-02)
~~~~~~~~~~~~~~~~
- Added EOF rule ``$`` and configuration ``re2c:eof``.
- Added ``/*!include:re2c ... */`` directive and ``-I`` option.
- Added ``/*!header:re2c:on*/`` and ``/*!header:re2c:off*/`` directives.
- Added ``--input-encoding <ascii | utf8>`` option.
+ `#237 <https://github.com/skvadrik/re2c/issues/237>`_:
Handle non-ASCII encoded characters in regular expressions
+ `#250 <https://github.com/skvadrik/re2c/issues/250>`_
UTF8 enoding
- Added include file with a list of definitions for Unicode character classes.
+ `#235 <https://github.com/skvadrik/re2c/issues/235>`_:
Unicode character classes
- Added ``--location-format <gnu | msvc>`` option.
+ `#195 <https://github.com/skvadrik/re2c/issues/195>`_:
Please consider using Gnu format for error messages
- Added ``--verbose`` option that prints "success" message if re2c exits
without errors.
- Added configurations for options:
+ ``-o --output`` (specify output file)
+ ``-t --type-header`` (specify header file)
- Removed configurations for internal/debug options.
- Extended ``-r`` option: allow to mix multiple ``/*!rules:re2c*/``,
``/*!use:re2c*/`` and ``/*!re2c*/`` blocks.
+ `#55 <https://github.com/skvadrik/re2c/issues/55>`_:
allow standard re2c blocks in reuse mode
- Fixed ``-F --flex-support`` option: parsing and operator precedence.
+ `#229 <https://github.com/skvadrik/re2c/issues/229>`_:
re2c option -F (flex syntax) broken
+ `#242 <https://github.com/skvadrik/re2c/issues/242>`_:
Operator precedence with --flex-syntax is broken
- Changed difference operator ``/`` to apply before encoding expansion of
operands.
+ `#236 <https://github.com/skvadrik/re2c/issues/236>`_:
Support range difference with variable-length encodings
- Changed output generation of output file to be atomic.
+ `#245 <https://github.com/skvadrik/re2c/issues/245>`_:
re2c output is not atomic
- Authored research paper "Efficient POSIX Submatch Extraction on NFA"
together with Dr Angelo Borsotti.
- Added experimental libre2c library (``--enable-libs`` configure option) with
the following algorithms:
+ TDFA with leftmost-greedy disambiguation
+ TDFA with POSIX disambiguation (Okui-Suzuki algorithm)
+ TNFA with leftmost-greedy disambiguation
+ TNFA with POSIX disambiguation (Okui-Suzuki algorithm)
+ TNFA with lazy POSIX disambiguation (Okui-Suzuki algorithm)
+ TNFA with POSIX disambiguation (Kuklewicz algorithm)
+ TNFA with POSIX disambiguation (Cox algorithm)
- Added debug subsystem (``--enable-debug`` configure option) and new debug
options:
+ ``-dump-cfg`` (dump control flow graph of tag variables)
+ ``-dump-interf`` (dump interference table of tag variables)
+ ``-dump-closure-stats`` (dump epsilon-closure statistics)
- Added internal options:
+ ``--posix-closure <gor1 | gtop>`` (switch between shortest-path algorithms
used for the construction of POSIX closure)
- Fixed a number of crashes found by American Fuzzy Lop fuzzer:
+ `#226 <https://github.com/skvadrik/re2c/issues/226>`_,
`#227 <https://github.com/skvadrik/re2c/issues/227>`_,
`#228 <https://github.com/skvadrik/re2c/issues/228>`_,
`#231 <https://github.com/skvadrik/re2c/issues/231>`_,
`#232 <https://github.com/skvadrik/re2c/issues/232>`_,
`#233 <https://github.com/skvadrik/re2c/issues/233>`_,
`#234 <https://github.com/skvadrik/re2c/issues/234>`_,
`#238 <https://github.com/skvadrik/re2c/issues/238>`_
- Fixed handling of newlines:
+ correctly parse multi-character newlines CR LF in ``#line`` directives
+ consistently convert all newlines in the generated file to Unix-style LF
- Changed default tarball format from .gz to .xz.
+ `#221 <https://github.com/skvadrik/re2c/issues/221>`_:
big source tarball
- Fixed a number of other bugs and resolved issues:
+ `#2 <https://github.com/skvadrik/re2c/issues/2>`_: abort
+ `#6 <https://github.com/skvadrik/re2c/issues/6>`_: segfault
+ `#10 <https://github.com/skvadrik/re2c/issues/10>`_:
lessons/002_upn_calculator/calc_002 doesn't produce a useful example program
+ `#44 <https://github.com/skvadrik/re2c/issues/44>`_:
Access violation when translating the attached file
+ `#49 <https://github.com/skvadrik/re2c/issues/49>`_:
wildcard state \000 rules makes lexer behave weard
+ `#98 <https://github.com/skvadrik/re2c/issues/98>`_:
Transparent handling of #line directives in input files
+ `#104 <https://github.com/skvadrik/re2c/issues/104>`_:
Improve const-correctness
+ `#105 <https://github.com/skvadrik/re2c/issues/105>`_:
Conversion of pointer parameters into references
+ `#114 <https://github.com/skvadrik/re2c/issues/114>`_:
Possibility of fixing bug 2535084
+ `#120 <https://github.com/skvadrik/re2c/issues/120>`_:
condition consisting of default rule only is ignored
+ `#167 <https://github.com/skvadrik/re2c/issues/167>`_:
Add word boundary support
+ `#168 <https://github.com/skvadrik/re2c/issues/168>`_:
Wikipedia's article on re2c
+ `#180 <https://github.com/skvadrik/re2c/issues/180>`_:
Comment syntax?
+ `#182 <https://github.com/skvadrik/re2c/issues/182>`_:
yych being set by YYPEEK () and then not used
+ `#196 <https://github.com/skvadrik/re2c/issues/196>`_:
Implicit type conversion warnings
+ `#198 <https://github.com/skvadrik/re2c/issues/198>`_:
no match for ‘operator!=’ in ‘i != std::vector<_Tp, _Alloc>::rend() [with _Tp = re2c::bitmap_t, _Alloc = std::allocator<re2c::bitmap_t>]()’
+ `#210 <https://github.com/skvadrik/re2c/issues/210>`_:
How to build re2c in windows?
+ `#215 <https://github.com/skvadrik/re2c/issues/215>`_:
A memory read overrun issue in s_to_n32_unsafe.cc
+ `#220 <https://github.com/skvadrik/re2c/issues/220>`_:
src/dfa/dfa.h: simplify constructor to avoid g++-3.4 bug
+ `#223 <https://github.com/skvadrik/re2c/issues/223>`_:
Fix typo
+ `#224 <https://github.com/skvadrik/re2c/issues/224>`_:
src/dfa/closure_posix.cc: pack() tweaks
+ `#225 <https://github.com/skvadrik/re2c/issues/225>`_:
Documentation link is broken in libre2c/README
+ `#230 <https://github.com/skvadrik/re2c/issues/230>`_:
Changes for upcoming Travis' infra migration
+ `#239 <https://github.com/skvadrik/re2c/issues/239>`_:
Push model example has wrong re2c invocation, breaks guide
+ `#241 <https://github.com/skvadrik/re2c/issues/241>`_:
Guidance on how to use re2c for full-duplex command & response protocol
+ `#243 <https://github.com/skvadrik/re2c/issues/243>`_:
A code generated for period (.) requires 4 bytes
+ `#246 <https://github.com/skvadrik/re2c/issues/246>`_:
Please add a license to this repo
+ `#247 <https://github.com/skvadrik/re2c/issues/247>`_:
Build failure on current Cygwin, probably caused by force-fed c++98 mode
+ `#248 <https://github.com/skvadrik/re2c/issues/248>`_:
distcheck still looks for README
+ `#251 <https://github.com/skvadrik/re2c/issues/251>`_:
Including what you use is find, but not without inclusion guards
- Updated documentation and website.
----
1.1x
----
1.1.1 (2018-08-30)
~~~~~~~~~~~~~~~~~~
- Fixed bug `#211 <https://github.com/skvadrik/re2c/issues/211>`_:
re2c ``-V`` throws ``std::out_of_range`` (version to vernum conversion).
1.1 (2018-08-27)
~~~~~~~~~~~~~~~~
- Replaced Kuklewicz POSIX disambiguation algorithm with Okui algorithm.
- Optimized GOR1 algorithm (computation of tagged epsilon-closure).
- Added option ``--conditions`` (an alias for ``-c --start-conditions``).
- Fixed bug `#201 <https://github.com/skvadrik/re2c/issues/201>`_:
Bugs with option: ``re2c:flags:no-debug-info``.
- Reworked first part of TDFA paper.
----
1.0x
----
1.0.3 (2017-11-08)
~~~~~~~~~~~~~~~~~~
- Fixed bug `#198 <https://github.com/skvadrik/re2c/issues/198>`_:
build error on MacOS with GCC-4.2.1
1.0.2 (2017-08-26)
~~~~~~~~~~~~~~~~~~
- Fixed bug `#194 <https://github.com/skvadrik/re2c/issues/194>`_:
Build with ``--enable-docs``
- Updated documentation.
1.0.1 (2017-08-11)
~~~~~~~~~~~~~~~~~~
- Fixed bug `#193 <https://github.com/skvadrik/re2c/issues/193>`_:
1.0 build failure on macOS: error: calling a private constructor of class
're2c::Rule'
- Added paper "Tagged Deterministic Finite Automata with Lookahead" to the
distribution files.
1.0 (2017-08-11)
~~~~~~~~~~~~~~~~
- Added options:
+ ``-P --posix-captures`` (POSIX-compliant capturing groups)
+ ``-T --tags`` (standalone tags with leftmost greedy disambiguation)
+ ``--no-lookahead``
+ ``--no-optimize-tags``
+ ``--eager-skip``
+ ``--dump-nfa``
+ ``--dump-dfa-raw``
+ ``--dump-dfa-det``
+ ``--dump-dfa-tagopt``
+ ``--dump-dfa-min``
+ ``--dump-adfa``
- Added new syntax:
+ ``@<stag>``
+ ``#<mtag>``
- Added new directives:
+ ``/*!stags:re2c ... */``
+ ``/*!mtags:re2c ... */``
+ ``/*!maxnmatch:re2c ... */``
- Added new API:
+ ``YYSTAGN (t)``
+ ``YYSTAGP (t)``
+ ``YYMTAGN (t)``
+ ``YYMTAGP (t)``
+ ``YYRESTORETAG (t)``
+ ``YYMAXNMATCH``
+ ``yynmatch``
+ ``yypmatch``
- Added inplace confgurations:
+ ``re2c:define:YYSTAGN``
+ ``re2c:define:YYSTAGP``
+ ``re2c:define:YYMTAGN``
+ ``re2c:define:YYMTAGP``
+ ``re2c:define:YYRESTORETAG``
+ ``re2c:flags:8`` or ``re2c:flags:utf-8````
+ ``re2c:flags:b`` or ``re2c:flags:bit-vectors``
+ ``re2c:flags:case-insensitive``
+ ``re2c:flags:case-inverted``
+ ``re2c:flags:d`` or ``re2c:flags:debug-output``
+ ``re2c:flags:dfa-minimization``
+ ``re2c:flags:eager-skip``
+ ``re2c:flags:e`` or ``re2c:flags:ecb``
+ ``re2c:flags:empty-class``
+ ``re2c:flags:encoding-policy``
+ ``re2c:flags:g`` or ``re2c:flags:computed-gotos``
+ ``re2c:flags:i`` or ``re2c:flags:no-debug-info``
+ ``re2c:flags:input``
+ ``re2c:flags:lookahead``
+ ``re2c:flags:optimize-tags``
+ ``re2c:flags:P`` or ``re2c:flags:posix-captures``
+ ``re2c:flags:s`` or ``re2c:flags:nested-ifs``
+ ``re2c:flags:T`` or ``re2c:flags:tags``
+ ``re2c:flags:u`` or ``re2c:flags:unicode``
+ ``re2c:flags:w`` or ``re2c:flags:wide-chars``
+ ``re2c:flags:x`` or ``re2c:flags:utf-16``
+ ``re2c:tags:expression``