the hash function.

* src/eltltest/nfa.cc: Adjust.
* src/tgbaalgos/eltl2tgba_lacim.cc: Fix a memory leak.

        * INSTALL, lbtt/INSTALL, lbtt/doc/texinfo.tex: Do not track
	anymore these generated files.

	* src/tgba/tgbacomplement.hh, src/tgba/tgbacomplement.cc: New
	files. The complementation algorithm.
	* src/tgba/Makefile.am: Adjust.
	* src/tgbatest/complementation.test,
	src/tgbatest/complementation.cc: New files. Test suite for the
	complementation algorithm.
	* src/tgbatest/Makefile.am: Adjust.
	* src/tgbaalgos/Makefile.am: Reformat the header using 80
	columns.

new keyword in the ELTL format: finish, which applies to an
automaton operator and tells whether it just completed.

* src/eltlparse/eltlparse.yy: Clean it. Add finish.
* src/eltlparse/eltlscan.ll: Add finish.
* src/formula_tree.cc, src/formula_tree.hh: New files. Define a
small AST representing formulae where atomic props are unknown
which is used in the ELTL parser.
* src/ltlast/automatop.cc, ltlast/automatop.hh, ltlast/nfa.cc,
ltlast/nfa.hh: Adjust.
* src/ltlast/unop.cc, src/ltlast/unop.hh: Finish is an unop.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc, src/ltlvisit/tunabbrev.cc,
src/tgba/formula2bdd.cc, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_lacim.cc: Handle finish in switches.
* src/tgbaalgos/eltl2tgba_lacim.cc: Translate finish.
* src/tgbatest/eltl2tgba.test: More tests.

instead of `out', to conform to other tests, and add a missing
call to diff.

interfaces.

* src/kripke/Makefile.am, src/kripke/fairkripke.cc,
src/kripke/fairkripke.hh, src/kripke/kripke.cc,
src/kripke/kripke.hh: New files.
* src/Makefile.am: Recurse into kripke and link libkripke.la.
* configure.ac: Output src/kripke/Makefile.

* src/tgbatest/Makefile.am: Adjust.
* src/tgbaalgos/scc.hh: More documentation.
* src/tgbaalgos/scc.cc (scc_recurse): Fix computation of
acc_paths and dead_paths.  Prevent recursions in states that
have already been visited.

a new tgba_scc class.

* src/tgba/futurecondcol.cc, src/tgba/futurecondcol.hh: Move
all delegation functions and scc_map into ...
* src/tgba/tgbascc.cc, src/tgba/tgbascc.hh: ... these new files.

* src/tgbaalgos/scc.hh (scc_map::~scc_map): Declare it.
* src/tgbaalgos/scc.cc (scc_map::~scc_map): Implement it.
(scc_map::build_map): Delete duplicate states.
* src/tbbatest/ltl2tgba.test: Run ltl2tgba -FV to catch
memory leaks with valgrind.

* src/tgba/futurecondcol.hh, src/tgba/futurecondcol.cc:
New files.
* src/tgba/Makefile.am: Adjust.
* src/tgbatest/ltl2tgba.cc: Add option -FC.

a map to track visited SCC since they are sequentially numbered.

values.

Before this change states were numbered using positive values and
SCCs using negative values.  That meant the user had to work with
negative values.  With this changes, the nonnegative values used
to label SCCs can also directly be used as index in the scc_map_.

* src/tgbaalgos/scc.hh (scc_map::scc_of_state,
scc_map::cond_set_of, scc_map::acc_set_of, scc_map::states_of,
scc_map::initial, scc_map::scc_type, scc_map::succ,
scc_map::accepting): Adjust prototypes to take or return unsigned
arguments.
* src/tgbaalgos/scc.cc: Adjust prototypes of the above functions.
(scc_map::build_map, scc_map::relabel_component): Number states
using negative values, and SCCs using nonnegative values.
(dump_scc_dot): Adjust to use nonnegative values.

point in using a map since the SCC are numbered in sequence.

* src/tgbaalgos/scc.hh (scc_map::relabel_component): Return the
number of the SCC instead of taking it as argument.
(scc_map::scc_num_): Delete this variable.  scc_map_.size() gives
the same information.
(scc_map::scc_map_type): Define using std::vector instead of
std::map.
* src/tgbaalgos/scc.cc: Adjust all uses.

* src/tgbaalgos/scc.hh (scc_map::scc_of_state,
scc_map::cond_set_of, scc_map::acc_set_of, scc_map::states_of):
New functions.
(scc_map::scc::conds): New attribute.
(dump_scc_dot): Take an optional VERBOSE argument.
* src/tgbaalgos/scc.cc (scc_map::scc_of_state,
scc_map::cond_set_of, scc_map::acc_set_of, scc_map::states_of):
Implement these new functions.
(dump_scc_dot): Display number of states, conditions and
acceptance conditions, with VERBOSE is set.
(build_map): Fill the new scc_map::scc::cond field.

* src/evtgba/evtgba.hh (format_state): Likewise.
* src/evtgba/product.hh (format_state): Likewise.

automaton operators such as Strong=G(F($0))->G(F($1)) and
G=R(false, $0).

* src/eltlparse/eltlparse.yy, src/eltlparse/eltlscan.ll: Add
support for more complex aliases.
* src/eltltest/acc.cc, src/eltltest/acc.test: Adjust.
* src/ltlast/nfa.cc, src/ltlast/nfa.hh (arity): Now returns an
unsigned value.
* src/tgbatest/eltl2tgba.test: Adjust.
* src/tgbalagos/eltl2tgba_lacim.cc: Fix sanity.

2009-04-09  Guillaume SADEGH  <sadegh@lrde.epita.fr>

	* src/eltlparse/eltlparse.yy (subformula): Avoid a comparaison
	between a signed and an unsigned value.
	* src/ltlast/automatop.hh, src/ltlast/automatop.cc (nfa): Avoid
	a name clash with the `nfa' class.

* src/eltlparse/eltlparse.yy: Adjust.
* src/ltlast/automatop.cc, src/ltlast/automatop.hh,
src/ltlvisit/clone.cc, src/ltlvisit/nenoform.cc: Clean the way we
handle the negation of automaton operators.
* src/ltlvisit/tostring.cc, src/ltlvisit/tostring.hh: Add an
optional argument to output a fully parenthesized string.
* src/tgbaalgos/eltl2tgba_lacim.cc: Fix it.
* src/tgbatest/eltl2tgba.cc: Add a new option (-L) to read formulae
from an LBTT-compatible file.
* src/tgbatest/eltl2tgba.test: A new tests.
* src/tgbatest/spotlbtt.test: Add LaCIM for ELTL.

operators such as F=U(true,$0) or R=!U(!$0,!$1), and infix
notation for binary automaton operators.

* README: Document the ELTL directories.
* src/eltlparse/eltlparse.yy, src/eltlparse/eltlscan.ll: Add
support for aliases and infix notation.
* src/eltlparse/public.hh, src/ltlast/nfa.cc, src/ltlast/nfa.hh:
Clean them.
* src/eltltest/acc.test, src/tgbatest/eltl2tgba.test: Add tests
for the ELTL parser's extensions.
* src/tgbatest/eltl2tgba.cc: Adjust.

for ELTL.  This is a new version of the work started in 2008 with
LTL and ELTL formulae now sharing the same class hierarchy.

* configure.ac: Adjust for src/eltlparse/ and src/eltltest/
directories, and call AX_BOOST_BASE.
* m4/boost.m4: New file defining AX_BOOST_BASE([MINIMUM-VERSION]).
* src/Makefile.am: Add eltlparse and eltltest.
* src/eltlparse/: New directory.  Contains the ELTL parser.
* src/eltltest/: New directory.  Contains tests related to
ELTL (parser and AST).
* src/ltlast/Makefile.am: Adjust for ELTL AST files.
* src/ltlast/automatop.cc, src/ltlast/automatop.hh: New files.
Represent automaton operators nodes used in ELTL ASTs.
* src/ltlast/nfa.cc, src/ltlast/nfa.hh: New files.  Represent
simple NFAs used internally by automatop nodes.
* src/ltlast/allnode.hh, src/ltlast/predecl.hh,
src/ltlast/visitor.hh: Adjust for automatop.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/clone.cc,
src/ltlvisit/clone.hh, src/ltlvisit/contain.cc,
src/ltlvisit/dotty.cc, src/ltlvisit/nenoform.cc,
src/ltlvisit/postfix.cc, src/ltlvisit/postfix.hh,
src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc,
src/ltlvisit/tostring.cc: Because LTL and ELTL formulae share the
same class hierarchy, LTL visitors need to handle automatop nodes
to compile.  When it's meaningful the visitor applies on automatop
nodes or simply assert(0) otherwise.
* src/tgba/tgbabddconcretefactory.cc (create_anonymous_state),
src/tgba/tgbabddconcretefactory.hh (create_anonymous_state): New
function used by the LaCIM translation algorithm for ELTL.
* src/tgbaalgos/Makefile.am: Adjust for eltl2tgba_lacim* files.
* src/tgbaalgos/eltl2tgba_lacim.cc,
src/tgbaalgos/eltl2tgba_lacim.hh: New files.  Implementation of
the LaCIM translation algorithm for ELTL.
* src/tgbaalgos/ltl2tgba_fm.cc, src/tgbaalgos/ltl2tgba_lacim.cc:
Handle automatop nodes in the translation by an assert(0).
* src/tgbatest/Makefile.am: Adjust for eltl2tgba.* files.
* src/src/tgbatest/eltl2tgba.cc, src/tgbatest/eltl2tgba.test: New
files

* HACKING: Mention that we require Bison >= 2.4 for developers.
* src/evtgbaparse/evtgbaparse.yy, src/tgbaparse/tgbaparse.yy,
src/ltlparse/ltlparse.yy: The sections "%{ ... %}" should now be
renamed "%code requires { ... }" or "%code { ... }" depending on
whether they should end up in the parser's header file or its cc
file.  Also use %language, %locations, %defines, instead of
command-line arguments.
* src/evtgbaparse/Makefile.am, src/tgbaparse/Makefile.am,
src/ltlparse/Makefile.am: Remove the --locations, --defines
and --languages in the call to bison.  Add -Wall -Werror to
catch more errors.
Thanks to Akim Demaille <akim@lrde.epita.fr> for the help.

Here are the reverted patches:
8c0d1003,
25a31142,
9afbaf63,
dc0005f4,
543190f2.