package menhirSdk
Install
Dune Dependency
Authors
Maintainers
Sources
md5=01577e5f15380c35bdaa8fd818204560
sha512=a686c4b047d5236c425afcd7f179964191268ff448b8d18510579d742a7256855049bc4fe568bb8f1b0d6cbfb758d95cd05e621e3410b75245bb799d623725d6
CHANGES.md.html
Changes
2020/02/11
Re-implement Menhir's default algorithm for constructing LR(1) automata, namely Pager's algorithm. This closes issue #21 (reported by Andrej Bauer), a bug that would sometimes cause unexplainable conflicts to appear, because states were merged too aggressively. This also removes an unreported bug that would cause the automaton to have too many states, because states were not merged aggressively enough. In summary, the old and new construction algorithms differ: in many cases, the resulting automaton is unchanged, but in some cases, the automaton produced by the new algorithm may have slightly more or slightly fewer states.
Re-implement Menhir's algorithm for constructing automata in
--no-pager
mode. In this (undocumented) mode, Menhir does not merge any states, but allows itself to redirect a transition from a states
to a larger states'
. This method yields an automaton whose states form a subset of the states of the canonical LR(1) automaton. It usually has significantly fewer states than the canonical automaton, and significantly more states than the automaton produced by Pager's algorithm. The new construction method removes an unreported bug that would cause the automaton to have too many states. The automaton produced by the new algorithm will usually have significantly fewer states than the automaton produced by the previous algorithm.Re-implement Menhir's algorithms for constructing automata in
--lalr
and--canonical
modes. The previous algorithms were correct, as far as we know, so the output of the new algorithms is the same, up to a possible renumbering of the states. The new algorithms are slightly faster.Increase the maximum length of a production, which used to be 127, up to 1023. Display a polite error message if this length is exceeded. (Problem reported by Andreas Abel.)
The new switch
--timings-to <filename>
causes internal timing information to be written to the file<filename>
.A version of the library
fix
is now vendored (included inside) Menhir. This should have no impact for end users, but implies thatdune
2.2.0 or later is required.
2020/01/21
There used to be a distinction between two slightly different ways of installing Menhir, namely with and without
ocamlfind
. This distinction disappears. The command line switch--suggest-ocamlfind
is deprecated and causes Menhir to printfalse
.Menhir is now built and installed by
dune
. This should make life easier for Menhir's developers: in particular,make test
andmake speed
can be run straight away and do not requiring installing Menhir first. This should also make compilation much faster on multi-core machines. (Contributed by Nicolás Ojeda Bär, to whom many thanks are due.)
2019/09/24
Build Menhir's standard library into the Menhir executable instead of storing it in a separate file
standard.mly
. This removes the need to hardcode the path to this file into the Menhir executable. This also removes the need for the command line switch--stdlib
, which remains supported but is now ignored, and for the environment variable$MENHIR_STDLIB
, which is now ignored. A positive side effect of this change is that the full path of the filestandard.mly
no longer appears in generated parsers; this removes a source of spurious variation. (Suggested and implemented by Nicolás Ojeda Bär.)
2019/06/20
When compiled with OCaml 4.02.3, Menhir could produce OCaml code containing invalid string literals. This was due to a problem in
String.escaped
. Fixed. (Reported by ELLIOTCABLE.)
2019/06/13
Relax the syntax of point-free actions to allow
< >
(with arbitrary whitespace inside the angle brackets) instead of just<>
. (Suggested by Lélio Brun.)When a cycle of
%inline
nonterminal symbols is encountered, the error message now shows the entire cycle, as opposed to just one symbol that participates in the cycle.Fix the treatment of the
error
token when printing the grammar forocamlyacc
. Its semantic value must not be referred to; a unit value must be used instead. The switch--only-preprocess-for-ocamlyacc
remains undocumented. (Reported by kris.)Coq back-end: multiple changes to stay up-to-date with respect to coq-menhirlib. See coq-menhirlib/CHANGES.md.
Coq back-end: the generated parser now contains a dedicated inductive type for tokens. This removes the need for
Obj.magic
in client code when the parser is used via extraction.Coq back-end: the generated parser checks that the version of MenhirLib matches. This check can be disabled with
--coq-no-version-check
.Coq back-end: the fuel parameter is now given as the logarithm of the maximum number of steps to perform. Therefore, using e.g., 50 makes sure we will not run out of fuel in any reasonable computation time.
2018/11/13
In
.mly
files, a new syntax for rules has been introduced, which is slightly more pleasant than the old syntax. (A rule is the definition of a nonterminal symbol.) The old syntax remains available; the user chooses between the two syntaxes on a per-rule basis. The new syntax is fully documented in the manual; a brief summary of the differences with respect to the old syntax is also available. The new syntax is considered experimental and is subject to change in the near future.In the Coq back-end, avoid pattern-matching at type
int31
, which will disappear in future versions of Coq. Instead, convertint31
toZ
, and perform pattern matching inZ
. (Reported by Vincent Laporte, implemented by Jacques-Henri Jourdan.)Implement a more economical renaming scheme for OCaml variables during the elimination of
%inline
symbols. This leads to slightly more readable code (more reasonable variables names, fewerlet
bindings).Another attempt at removing all trailing spaces in auto-generated
.messages
files. (I hope I got it right, this time.)
2018/10/26
A new syntactic sugar facility, "token aliases", has been added. The declaration of a terminal symbol may also declare an alias, which takes the form of a name between double quotes, as in
%token PLUS "+"
. Thereafter,"+"
may be used freely in place ofPLUS
throughout the grammar. This makes it slightly easier to read grammars. (Contributed by Perry E. Metzger.)Until today, the semicolon character
;
was insignificant: it was considered as whitespace by Menhir. It is now accepted only in a few specific places, namely: after a declaration; after a rule; after a producer. If Menhir suddenly complains about a semicolon, just remove it. This change is being made in preparation for further syntactic changes.New flag
--no-dollars
, which disallows the use of$i
in semantic actions. The default behavior remains to allow the use of$i
.When generating OCaml code, include all record fields in record patterns, even when bound to a wildcard pattern. Thus, avoid triggering OCaml's warning 9.
2018/10/06
Standard library: add
rev
,flatten
,append
. Add a link from the manual tostandard.mly
in the repository.Update the manual to explain how to use
dune
andmenhir
together.Install
.cmxs
files for menhirLib and menhirSdk.Remove all references to
Pervasives
in the generated OCaml code. These references were infrequent anyway, andPervasives
is about to be deprecated in OCaml 4.08, it seems.In
--interpret
mode, printReady!
once ready to accept input.At verbosity level
-lg 2
, for each nonterminal symbolN
, display a sentence (composed of terminal symbols) of minimal length generated byN
.When writing a
.cmly
file, open it in binary mode. This should eliminate the failure that was observed under Windows:output_value: not a binary channel
. (Reported by Bryan Phelps. A fix was present in themingw
patches for Menhir.)Change the logic used in the root
Makefile
to deal with Unix and Windows in a uniform way. (Also inspired by themingw
patches for Menhir.)Coq back-end: add a few newlines in the generated file for readability. (Suggested by Bernhard Schommer.)
Remove the trailing space at the end of every sentence in auto-generated
.messages
files. (Suggested by Xavier Leroy.)
2018/09/05
When
--explain
is enabled, always create a fresh.conflicts
file (wiping out any pre-existing file), even if there are in fact no conflicts. This should avoid confusion with outdated.conflicts
files.Fix several bugs in the treatment of
--strict
. No.conflicts
file was created when--strict
and--explain
were both enabled. Also, some warnings were not properly turned into errors by--strict
.
2018/07/04
Update the
man
page, which was woefully out of date.
2018/07/03
New location keywords.
$loc
is sugar for the pair($startpos, $endpos)
.$loc(x)
is sugar for the pair($startpos(x), $endpos(x))
.$sloc
is sugar for the pair($symbolstartpos, $endpos)
. (Contributed by Nicolás Ojeda Bär.)
2018/06/08
Add two new parameterized nonterminal symbols,
endrule(X)
andmidrule(X)
, to the standard library. These symbols have been available since 2015/02/11 under the namesanonymous(X)
andembedded(X)
, but were not yet documented.endrule(X)
andmidrule(X)
are now documented, whileanonymous(X)
andembedded(X)
remain present but are deprecated.
2018/05/30
In
--coq
mode, Menhir now produces references toMenhirLib.Grammar
instead of justGrammar
, and similarly for all modules in Menhir's support library.New command line option
--coq-lib-no-path
to suppress the above behavior and retain the previous (now-deprecated) behavior, that is, produce unqualified references the modules in Menhir's support library.New command line option
--coq-lib-path <path>
to indicate under what name (or path) the support library has been installed. Its default value isMenhirLib
.
2018/05/23
New commands
--infer-write-query
,--infer-read-reply
, and--infer-protocol-supported
. These commands remove the need for Menhir to invokeocamlc
andocamldep
behind the scenes, and make it easier to write correct build rules for Menhir projects. The command line options--infer
,--raw-depend
and--depend
remain supported, but are no longer preferred. (Suggested by Fabrice Le Fessant.)Remove the warning that was issued when
%inline
was used but--infer
was turned off. Most people should use a build system that knows how to enable OCaml type inference, such asocamlbuild
ordune
.New HTML rendering of the manual, available both online and as part of Menhir's installation. (Implemented by Gabriel Scherer.)
2017/12/22
Add a flag
--unused-precedence-levels
to suppress all warnings about useless%left
,%right
,%nonassoc
and%prec
declarations. (Suggested by Zachary Tatlock.)
2017/12/06
Fix the termination test that takes place before parameterized symbols are expanded away. The previous test was both unsound (it would accept grammars whose expansion did not terminate) and incomplete (it would reject grammars whose expansion did terminate). The new test is believed to be sound and complete. (Thanks to Martin Bodin for prompting us to look into this issue.)
2017/11/12
Documentation: clarify the fact that
%type
declarations should carry types whose meaning does not depend on the headers%{ ... %}
.
2017/10/13
Remove the OCaml version check at installation time, for greater simplicity, and because for some reason it did not work properly under Cygwin. (Reported by Andrew Appel.)
2017/09/26
Makefile
fix: when determining whether the suffix.exe
should be used, one should test whether the OS is Windows, not whether the compiler is MSVC. (Suggested by Jonathan Protzenko.)
2017/07/12
Include the LaTeX sources of the manual in the official
.tar.gz
archive. This should allow the manual to be included as part of the Debian package.Mention Obelisk, a pretty-printer for
.mly
files, in the manual.
2017/06/07
Removed an undeclared dependency of MenhirSdk on Unix. (Reported and fixed by Frédéric Bour.)
2017/05/09
Menhir now always places OCaml line number directives in the generated
.ml
file. (Until now, this was done only when--infer
was off.) Thus, if a semantic action contains anassert
statement, the file name and line number information carried by theAssert_failure
exception should now be correct. (Reported by Helmut Brandl.)
2017/04/18
Changed Menhir's license from QPL to GPLv2. MenhirLib remains under LGPLv2, with a linking exception.
Moved the repository to gitlab.inria.fr.
Introduced a new command line switch,
--cmly
, which causes Menhir to create a.cmly
file, containing a description of the grammar and automaton. (Suggested by Frédéric Bour.)Introduced a new library, MenhirSdk, which allows reading a
.cmly
file. The purpose of this library is to allow external tools to take advantage of the work performed by Menhir's front-end. (Suggested by Frédéric Bour.)Introduced new syntax for attributes in a
.mly
file. Attributes are ignored by Menhir's back-ends, but are written to.cmly
files, thus can be exploited by external tools via MenhirSdk. (Suggested by Frédéric Bour.)The definition of a
%public
nonterminal symbol can now be split into several parts within a single.mly
file. (This used to be permitted only over multiple.mly
files.) (Suggested by Frédéric Bour.)New functions in the incremental API:
shifts
,acceptable
,current_state_number
.New functions in the incremental API and inspection API:
top
,pop
,pop_many
,get
,equal
,force_reduction
,feed
,input_needed
,state_has_default_reduction
,production_index
,find_production
. (Suggested by Frédéric Bour.)New module
MenhirLib.ErrorReports
. This module is supposed to offer auxiliary functions that help produce good syntax error messages. This module does not yet contain much functionality and is expected to evolve in the future.Incompatible change in the incremental API: the type
env
becomes'a env
.Incompatible change in the incremental API: the function
has_default_reduction
is renamedenv_has_default_reduction
.The type
stack
and the functionstack
in the incremental API are deprecated. The new functionstop
andpop
can be used instead to inspect the parser's stack. The moduleMenhirLib.General
is deprecated as well. Deprecated functionality will be removed in the future.Incompatible change in the incremental API: the type of the function
print_stack
in the result signature of the functorMenhirLib.Printers.Make
changes to'a env -> unit
. (Anyway, as of now,MenhirLib.Printers
remains undocumented.)Improved the syntax error message that is displayed when a
.mly
file is incorrect: the previous and next token are shown.Fixed a bug where the module name
Basics
was shadowed (that is, if the user's project happened to contain a toplevel module by this name, then it could not be referred to from a.mly
file). (Reported by François Thiré.)
2017/01/01
Add
$MENHIR_STDLIB
as a way of controlling where Menhir looks for the filestandard.mly
. This environment variable overrides the installation-time default setting, and is itself overridden by the--stdlib
command line switch. (Requested by Jonathan Protzenko.)Makefile
fix: filter out'\r'
in the output ofmenhir --suggest-ocamlfind
, so that theMakefile
works when Menhir is compiled as a Windows executable. (Suggested by Jonathan Protzenko.)
2016/12/01
Updated the Coq back-end for compatibility with Coq 8.6. (Jacques-Henri Jourdan.)
2016/11/15
Fix in
--only-preprocess-for-ocamlyacc
mode: avoid printing newline characters inside a%type
declaration, as this is forbidden byocamlyacc
. (Reported by Kenji Maillard.)Fix in
--only-preprocess-for-ocamlyacc
mode: avoid variable capture caused byocamlyacc
internally translating$i
to_i
. (Reported by Kenji Maillard.)
2016/09/01
New command line switch
--only-preprocess-for-ocamlyacc
, supposed to print the grammar in a form thatocamlyacc
can accept. As of now, this feature is incomplete (in particular, support for Menhir's position keywords is missing), untested, and undocumented. It could be removed in the future.
2016/08/26
Fixes in the output of
--only-preprocess
:The order of productions is now preserved. (It was not. This matters if there are reduce/reduce conflicts.)
%parameter
directives are now printed. (They were not).%on_error_reduce
directives are now printed. (They were not.)
2016/08/25
Makefile
fix, undoing a change made on 2016/03/03, which caused installation to fail under (some versions of?) Windows where dynamic linking is not supported. (Reported by Andrew Appel.)
2016/08/05
%on_error_reduce
declarations now have implicit priority levels, so as to tell Menhir what to do when two such declarations are applicable. Also, the well-formedness checks on%type
and%on_error_reduce
declarations have been reinforced.
2016/06/23
A small change in the generated code (both in the code and table back-ends) so as to avoid OCaml's warning 41. The warning would arise (when compiling a generated parser with OCaml 4.03) because Menhir's exception
Error
has the same name as the data constructorError
in OCaml's pervasive library. (Reported by Bernhard Schommer.)
2016/05/18
Anonymous rules now work also when used inside a parameterized rule. (This did not work until now.) When an anonymous rule is hoisted out of a parameterized rule, it may itself become parameterized. Menhir parameterizes it only over the parameters that it actually needs.
2016/05/04
In the Coq back-end, split the largest definitions into smaller ones. This circumvents a limitation of vm_compute on 32 bit machines. This also enables us to perform sharing between definitions, so that the generated files are much smaller.
2016/04/10
When printing a grammar (which is done by the
--only-preprocess
options), remove the leading bar|
, for compatibility withyacc
andbison
.
2016/03/11
In the code back-end, generate type annotations when extracting a semantic value out of the stack. When working with a semantic value of some function type, OCaml would incorrectly warn that this function does not use its argument. This warning should now be gone.
2016/03/03
Makefile changes, so as to support
ocamlbuild
4.03, which seems to have stricter hygiene rules than previous versions.
2015/12/30
Prevented an incorrect installation that would take place if
USE_OCAMLFIND
was given duringmake all
but not duringmake install
. Added a command line directive--suggest-ocamlfind
.
2015/11/11
Fixed a severe bug in Menhir 20151110 which (when using the code back-end) could cause a generated parser to crash. Thanks to ygrek for reporting the bug.
The code produced by version
XXXXXXXX
ofmenhir --table
can now be linked only against a matching version of MenhirLib. If an incorrect version of MenhirLib is installed, the OCaml compiler should complain thatMenhirLib.StaticVersion.require_XXXXXXXX
is undefined.
2015/11/10
Optimized the computation of
$symbolstartpos
, based on a couple of assumptions about the lexer. (See the manual.)
2015/11/04
Modified the treatment of
%inline
so that the positions that are computed are the same, regardless of whether%inline
is used. This property did not hold until now. It now does. Of course, this means that the positions computed by the new Menhir are not the same as those computed by older versions of Menhir.Fixed a bug in the treatment of
%inline
that would lead to an incorrect position being computed when the caller and callee had a variable by the same name.Modified Menhir so as to compute the start and end positions in the exact same way as
ocamlyacc
. (There used to be a difference in the treatment of epsilon productions.) Of course, this means that the positions computed by the new Menhir are not the same as those computed by older versions of Menhir. Added the keyword$symbolstartpos
so as to simulateParsing.symbol_start_pos()
in theocamlyacc
world. The keyword$startpos
sometimes produces a position that is too far off to the left;$symbolstartpos
produces a more accurate position.Incompatible change of the incremental API: instead of a unit argument, the entry points (which are named after the start symbols) now require an initial position, which typically should be
lexbuf.lex_curr_p
.
2015/11/03
Fix-fix-and-re-fix the
Makefile
in an attempt to allow installation under opam/Windows. Thanks to Daniel Weil for patient explanations and testing.
2015/10/29
MenhirLib is now installed in both binary and source forms.
menhir --suggest-menhirLib
reports where MenhirLib is installed. This can be used to retrieve a snapshot of MenhirLib in source form and include it in your project (if you wish to use--table
mode, yet do not wish to have a dependency on MenhirLib).
2015/10/26
Allow
--list-errors
to work on 32-bit machines (with low hard limits). This should fix a problem whereby the 2015/10/23 release could not bootstrap on a 32-bit machine.
2015/10/23
New declaration
%on_error_reduce foo
, wherefoo
is a nonterminal symbol. This modifies the automaton as follows. In every state where a production of the formfoo -> ...
is ready to be reduced, every error action is replaced with a reduction of this production. (If there is a conflict between several productions that could be reduced in this manner, nothing is done.) This does not affect the language that is accepted by the automaton, but delays the detection of an error: more reductions take place before the error is detected.Fixed a bug whereby Menhir would warn about a useless
%prec
declaration, even though it was useful. This would happen when the declaration was duplicated (by inlining or by macro-expansion) and some but not all of the copies were useful.Added
has_default_reduction
to the incremental API.Modified the meaning of
--canonical
to allow default reductions to take place. This implies no loss of precision in terms of lookahead sets, and should allow gaining more contextual information when a syntax error is encountered. (It should also lead to a smaller automaton.)A brand new set of tools to work on syntax errors.
New command
--list-errors
, which produces a list of input sentences which are representative of all possible syntax errors. (Costly.)New command
--interpret-error
, which confirms that one particular input sentence ends in a syntax error, and prints the number of the state in which this error occurs.New command
--compile-errors
, which compiles a list of erroneous sentences (together with error messages) to OCaml code.New command
--compare-errors
, which compares two lists of erroneous sentences to check if they cover the same error states.New command
--update-errors
, which updates the auto-generated comments in a list of erroneous sentences.New command
--echo-errors
, which removes all comments and messages from a list of erroneous sentences, and echoes just the sentences.
2015/10/16
Additions to the incremental API.
A
supplier
is a function that produces tokens on demand.lexer_lexbuf_to_supplier
turns a lexer and a lexbuf into a supplier.loop
is a ready-made made main parsing loop.loop_handle
is a variant that lets the user do her own error handling.loop_handle_undo
is a variant that additionally allows undoing the last few "spurious" reductions.number
maps a state of the LR(1) automaton to its number.
Incompatible change of the incremental API: renamed the type
'a result
to'a checkpoint
. This is a better name anyway, and should help avoid confusion with the type'a result
introduced in OCaml 4.03.
2015/10/12
Avoid using
$(shell pwd)
inMakefile
, for better Windows compatibility.
2015/10/05
Fixed a bug where inconsistent OCaml code was generated when
--table
and--external-tokens
were used together. (Reported by Darin Morrison.)In
--infer
mode, leave the.ml
file around (instead of removing it) ifocamlc
fails, so we have a chance to understand what's wrong.
2015/09/21
Re-established some error messages concerning the mis-use of
$i
which had disappeared on 2015/06/29.
2015/09/11
Fixed the mysterious message that would appear when a nonterminal symbol begins with an uppercase letter and
--infer
is turned on. Clarified the documentation to indicate that a (non-start) nonterminal symbol can begin with an uppercase letter, but this is not recommended.
2015/08/27
New option
--inspection
(added last January, documented only now). This generates an inspection API which allows inspecting the automaton's stack, among other things. This API can in principle be used to write custom code for error reporting, error recovery, etc. It is not yet mature and may change in the future.
2015/07/20
Added the command line options
--unused-token <symbol>
and--unused-tokens
.
2015/06/29
Changed the treatment of the positional keywords
$i
. They are now rewritten into variables of the form_i
wherei
is an integer. Users are advised not to use variables of this form inside semantic actions.
2015/02/11
Added support for anonymous rules. This allows writing, e.g.,
list(e = expression SEMI { e })
whereas previously one should have writtenlist(terminated(e, SEMI))
.
2015/02/09
Moved all of the demos to
ocamlbuild
(instead ofmake
).
2015/01/18
Incompatible change of the incremental API. The incremental API now exposes shift events too.
2015/01/16
Fixed a couple bugs in
Makefile
andsrc/Makefile
which would cause compilation and installation to fail withTARGET=byte
. (Reported by Jérémie Courrèges-Anglas and Daniel Dickman.)
2015/01/01
Incompatible change of the incremental API. The entry point
main_incremental
is now namedIncremental.main
.
2014/12/29
Incompatible change of the incremental API.
The API now exposes reduction events.
The type
'a result
is now private.The type
env
is no longer parameterized.handle
is renamed toresume
.offer
andresume
now expect a result, not an environment.
2014/12/22
Documented the Coq back-end (designed and implemented by Jacques-Henri Jourdan).
2014/12/15
New incremental API (in
--table
mode only), inspired by Frédéric Bour.
2014/12/11
Menhir now reports an error if one of the start symbols produces either the empty language or the singleton language {epsilon}.
Although some people out there actually define a start symbol that recognizes {epsilon} (and use it as a way of initializing or re-initializing some global state), this is considered bad style. Furthermore, by ruling out this case, we are able to simplify the table back-end a little bit.
2014/12/12
A speed improvement in the code back-end.
2014/12/08
Menhir now requires OCaml 4.02 (instead of 3.09).
2014/12/02
Removed support for the
$previouserror
keyword.Removed support for
--error-recovery
mode.
2014/02/18
In the Coq back-end, use
'
instead of_
as separator in identifiers. Also, correct a serious bug that was inadvertently introduced on 2013/03/01 (r319).
2014/02/14
Lexer fix so as to support an open variant type
[> ...]
within a%type<...>
declaration.
2013/12/16
Updated the
Makefile
so thatinstall
no longer depends onall
.Updated the demos so that the lexer does not invoke
exit 0
when encouteringeof
. (This should be more intuitive.)
2013/09/11
Fixed a newline conversion problem that would prevent Menhir from building on Windows when using ocaml 4.01.
2013/03/02
Switched to ocamlbuild. Many thanks to Daniel Weil for offering very useful guidance.
2013/01/16
menhir --depend
was broken since someone added new whitespace in the output ofocamldep
. Fixed.
2012/12/19
Fixed a compilation problem that would arise when a file produced by Menhir on a 64-bit platform was compiled by ocaml on a 32-bit platform.
2012/08/25
Performance improvements in the computation of various information about the automaton (module
Invariant
). The improvements will be noticeable only for very large automata.
2012/06/07
The option
--log-grammar 3
(and above) now causes theFOLLOW
sets for terminal symbols to be computed and displayed.
2012/05/25
Added the flag
--canonical
, which causes Menhir to produce a canonical LR(1) automaton in the style of Knuth. This means that no merging of states takes place during the construction of the automaton, and that no default reductions are allowed.
2012/01/23
Fixed a bug whereby a
%nonassoc
declaration was not respected. This declaration requests that a shift/reduce conflict be reduced in favor of neither shifting nor reducing, that is, a syntax error must occur. However, due to an unforeseen interaction with the default reduction mechanism, this declaration was sometimes ignored and reduction would take place.
2012/01/09
Changes in the (undocumented) Coq back-end so as to match the ESOP 2012 paper.
2011/10/19
The
Makefile
now tests whether Unix or Windows is used (the test is performed by evaluatingSys.os_type
underocaml
) and changes a couple settings accordingly:the executable file name is either
menhir
ormenhir.exe
the object file suffix is either
.o
or.obj
Added
--strict
, which causes many warnings about the grammar and about the automaton to be considered errors.The
#
annotations that are inserted in the generated.ml
file now retain their full path. (That is, we no longer useFilename.basename
.) This implies that the#
annotations depend on how Menhir is invoked -- e.g.,menhir foo/bar.mly
andcd foo && menhir bar.mly
will produce different results. Nevertheless, this seems reasonable and useful (e.g., in conjunction withocamlbuild
and a hierarchy of files). Thanks to Daniel Weil.
2011/10/06
With the
-lg 1
switch, Menhir now indicates whether the grammar is SLR(1).
2011/05/24
Removed the lock in
ocamldep.wrapper
. It is the responsibility of the user to avoid interferences with other processes (or other instances of the script) that create and/or remove files.
2011/04/28
The (internal) computation of the automaton's invariant was broken and has been fixed. Surprisingly, this does not seem to affect the generated code, (which was correct,) so no observable bug is fixed. Hopefully no bug is introduced!
2011/04/07
The grammar description files (
.mly
) are now read in up front and stored in memory while they are parsed. This allows us to avoid the use ofpos_in
andseek_in
, which do not work correctly when CRLF conversion is being performed.
2011/04/05
Fixed a bug in the type inference module (for parameterized non-terminals) which would cause an infinite loop.
2011/01/24
Fixed a bug that would cause an assertion failure in the generated parser in some situations where the input stream was incorrect and the grammar involved the error token. The fix might cause grammars that use the error token to behave differently (hopefully more accurately) as of now.
2009/06/18
Makefile
changes: build and install only the bytecode version of MenhirLib whenTARGET=byte
is set.
2009/02/06
Fixed
ocamldep.wrapper
to avoid quoting the name of theocaml
command. This is hoped to fix a compilation problem under MinGW.
2009/02/04
A
Makefile
fix to avoid a problem under Windows/Cygwin.Renamed the
ocaml-check-version
script so as to avoid a warning.
2008/09/05
Ocaml summer project: added
--interpret
,--table
, and--suggest-*
.
2008/08/06
Fixed a problem that would cause the code inliner to abort when a semantic value and a non-terminal symbol happened to have the same name.
Removed code sharing.
2008/06/20
Removed an incorrect assertion that caused failures (
lr1.ml
, line 134).
2007/12/05
Disabled code sharing by default, as it is currently broken. (See Yann's message; assertion failure at runtime.)
2007/12/01
Added an optimization to share code among states that have identical outgoing transition tables.
2007/08/30
Small
Makefile
change: create an executable file forcheck-ocaml-version
in order to work around the absence of dynamic loading on some platforms.
2007/05/20
Made a fundamental change in the construction of the LR(1) automaton in order to eliminate a bug that could lead to spurious conflicts -- thanks to Ketti for submitting a bug report.
2007/05/18
Added
--follow-construction
to help understand the construction of the LR(1) automaton (very verbose).
2007/05/11
Code generation: more explicit qualifications with
Pervasives
so as to avoid capture when the user redefines some of the built-in operators, such as(+)
.Added a new demo (
calc-param
) that shows how to use%parameter
.
2007/03/22
Makefile
improvements (check forPREFIX
; bootstrap in bytecode now also available). Slight changes toOMakefile.shared
.
2007/02/15
Portability fix in
Makefile
andMakefile.shared
(avoidedwhich
).
2006/12/15
Portability fix in
Makefile.shared
(replaced&>
with2>&1 >
).
2006/06/23
Made a slight restriction to Pager's criterion so as to never introduce fake conflict tokens (see
Lr0.compatible
). This might help make conflict explanations more accurate in the future.
2006/06/16
Fixed bug that would cause positions to become invalid after inlining.
2006/06/15
Fixed
--depend
to be more lenient when analyzingocamldep
's output.Added
--raw-depend
which transmitsocamldep
's output unchanged (for use in conjunction withomake
).
2006/06/12
Fixed bug that would cause
--only-preprocess
to print%token
declarations also for pseudo-tokens.Fixed bug that caused some precedence declarations to be incorrectly reported as useless.
Improved things so that useless pseudo-tokens now also cause warnings.
Fixed bug that would cause
%type
directives for terminal symbols to be incorrectly accepted.Fixed bug that would occur when a semantic action containing
$i
keywords was inlined.
2006/05/05
Fixed problem that caused some end-of-stream conflicts not to be reported.
Fixed Pager's compatibility criterion to avoid creating end-of-stream conflicts.
2006/04/21
Fixed problem that allowed generating incorrect but apparently well-typed Objective Caml code when a semantic action was ill-typed and
--infer
was omitted.
2006/03/29
Improved conflict reports by factoring out maximal common derivation contexts.
2006/03/28
Fixed bug that could arise when explaining a conflict in a non-LALR(1) grammar.
2006/03/27
Changed count of reduce/reduce conflicts to allow a comparison with
ocamlyacc
's diagnostics.When refusing to resolve a conflict, report all diagnostics before dying.
2006/03/18
Added display of
FOLLOW
sets when using--log-grammar 2
.Added
--graph
option.Fixed behavior of
--depend
option.
2006/01/06
Removed reversed lists from the standard library.