Turn off re2c:eof = 0 #254
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skvadrik
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Aug 5, 2019
The ability to reset this configuration is necessary in order to be able to mix re2c blocks that use EOF rule and blocks that don't. This fixes bug #254: "Turn off re2c:eof".
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All true, well spotted! I added the ability to reset |
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Great! |
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Released re2c-1.2.1 with the fix. Closing the bug. |
netbsd-srcmastr
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Sep 20, 2020
2.0.3 (2020-08-22) ~~~~~~~~~~~~~~~~~~ - Fix issues when building re2c as a CMake subproject (`#302 <https://github.com/skvadrik/re2c/pull/302>`_: - 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.
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I have a .re file with several different lexers in it.
Some of them use the new 're2c:eof = 0' feature. However, some of them use the 'sentinel method' with no need to YYFILL. As far as I can tell, once you turn on 're2c:eof = 0', it stays on for the rest of the file. I worked around this by putting all my 'sentinel method' lexers at the top of the file and then all the 'EOF rule' parsers at the bottom.
If there is already a method 'unset' EOF mode, it should be documented somewhere. If there is not, it should be added.
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