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2003-06-04  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

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	* src/ltlparse/ltlparse.yy (result): Suppress unused definition.

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	* src/Makefile.am (SUBDIRS): Build `ltltest' after `.'.

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	* src/ltlparse/ltlscan.ll: Use ltlyy as %prefix.
	* src/ltlparse/parsedecl.hh (YY_DECL): Rename yylex to ltlyylex.
	* src/ltlparse/ltlparse.yy: Define yylex as ltlyylex.

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2003-06-03  Alexandre Duret-Lutz  <aduret@src.lip6.fr>
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	* src/tgba/dictunion.cc, src/tgba/ltl2tgba.cc,
	src/tgba/succiterconcrete.cc, src/tgba/tgbabddconcrete.cc,
	src/tgba/tgbabddprod.cc, src/tgba/tgbabddtranslatefactory.cc,
	src/tgba/tgbabddtranslateproxy.cc: Include <cassert>.

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2003-06-02  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

	* src/tgba/tgbabdddict.cc, src/tgba/tgbabdddict.hh: New files.
	* src/tgba/Makefile.am (libtgba_la_SOURCES): Add them.
	* src/tgba/tgbabdddict.cc (tgba_bdd_dict::contains): New function.
	* src/tgba/tgbabdddict.hh (tgba_bdd_dict::contains): Likewise.

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2003-05-28  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

	* src/tgba/statebdd.hh (state_bdd::as_bdd): Add non-const variant.
	* src/tgba/tgbabddtranslateproxy.cc,
	src/tgba/tgbabddtranslateproxy.hh: New files.
	* src/tgba/Makefile.am (libtgba_la_SOURCES): Add them.

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2003-05-27  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

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	* src/tgba/bddprint.cc, src/tgba/bddprint.hh,
	src/tgba/dictunion.hh, src/tgba/ltl2tgba.cc, src/tgba/ltl2tgba.hh,
	src/tgba/tgbabddconcretefactory.hh,
	src/tgba/tgbabddconcreteproduct.cc,
	src/tgba/tgbabddconcreteproduct.hh, src/tgba/tgbabddfactory.hh,
	src/tgba/tgbabddtranslatefactory.hh, src/tgbaalgos/dotty.cc:
	Add Doxygen comments.

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	* src/tgba/bddfactory.hh, src/tgba/statebdd.hh,
	src/tgba/succiterconcrete.hh, src/tgba/tgbabddconcrete.hh,
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	src/tgba/tgbabddcoredata.hh, src/tgba/tgbabdddict.hh: Add
	Doxygen comments.

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	* src/tgba/bddprint.hh (bdd_format_set): New function.
	* src/tgba/bddprint.cc (bdd_format_set): Likewise.
	* src/tgba/state.hh: Add Doxygen comments.
	(state::compare): Take a state*, not a state&.
	(state_ptr_less_than): New functor.
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	* src/tgba/statebdd.hh (state_bdd::compare): Take a state*, not a
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	state&.
	* src/tgba/statebdd.cc (state_bdd::compare): Likewise.
	* src/tgba/succiter.hh: Add Doxygen comments.
	* src/tgba/tgba.hh: Mention promises.
	(tgba::formate_state): New pure virtual method.
	* src/tgba/tgbabddconcrete.hh (tgba_bdd_concrete::formate_state):
	New method.
	* src/tgba/tgbabddconcrete.cc (tgba_bdd_concrete::formate_state):
	Likewise.
	* src/tgbaalgos/dotty.cc: Adjust to use state_ptr_less_than
	and tgba::formate_state.

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	* src/tgba/succiter.hh (tgba_succ_iterator::current_state):
	Return a state*, not a state_bdd.
	* src/tgba/succiterconcrete.hh
	(tgba_succ_iterator_concrete::current_state): Return a state_bdd*,
	not a state_bdd.
	* src/tgba/tgba.hh: Add Doxygen comments.
	(tgba::succ_iter, tgba::get_init_state): Use state*, not state_bdd.
	* src/tgba/tgbabddconcrete.hh (tgba_bdd_concrete::get_init_state):
	Return a state_bdd*, not a state_bdd.
	(tgba_bdd_concrete::get_init_bdd): New method.
	(tgba_bdd_concrete::succ_uter): Take a state* as argument.
	* src/tgba/tgbabddconcrete.cc: Likewise.
	* src/tgba/tgbabddtranslatefactory.cc
	(tgba_bdd_translate_factory::tgba_bdd_translate_factory): Use
	tgba_bdd_concrete::get_init_bdd.
	* src/tgbaalgos/dotty.cc (dotty_state, dotty_rec, dotty): Adjust
	to use state* instead of state_bdd.
	* src/tgba/succlist.hh: Delete.  (Leftover from a previous
	draft.)

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2003-05-26  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

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	* src/tgbaalgos/dotty.cc, src/tgbaalgos/dotty.hh: New files.
	* src/tgbaalgos/Makefile.am (libtgbaalgos_la_SOURCES): Add them.

	* src/tgba/tgbabddtranslatefactory.cc
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	(tgba_bdd_translate_factory::compute_pairs): Be quiet.

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	* src/Makefile.am (SUBDIRS): Add tgbaalgos.
	(libspot_la_LIBADD): Add tgba/libtgbaalgos.
	* src/tgbaalgos/Makefile.am: New file.
	* configure.ac: Output src/tgbaalgos/Makefile.

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	* src/tgba/bddprint.hh, src/tgba/bddprint.cc: New files.
	* src/tgba/Makefile.am (libtgba_la_SOURCES): Add them.
	* src/tgba/public.hh: Include bddprint.hh.

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	* src/tgba/tgba.hh: Rename as ...
	* src/tgba/public.hh: .. this.
	* src/tgba/tgba.hh: New file.
	* src/tgba/Makefile.am (libtgba_la_SOURCES): Add public.hh.
	* src/tgba/tgbabddconcrete.hh (tgba_bdd_concrete): Inherit from tgba.
	(tgba_bdd_concrete::init_iter): Delete.
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	(tgba_bdd_concrete::succ_iter): Take a state_bdd as argument,
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	not a bdd.
	* src/tgba/tgbabddconcrete.cc: Likewise.

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	Initial code for TGBA (Transition Generalized Bchi Automata).
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	Contains tgba_bdd, a BDD-encoded TGBA, and ltl_to_tgba,
	a LTL-to-TGBA translator using Couvreur's algorithm.

	* src/Makefile.am (SUBDIRS): Add tgba.
	(libspot_la_LIBADD): Add tgba/libtgba.la.
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	* configure.ac: Output src/tgba/Makefile.
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	* src/tgba/Makefile.am, src/tgba/bddfactory.cc,
	src/tgba/bddfactory.hh, src/tgba/dictunion.cc,
	src/tgba/dictunion.hh, src/tgba/ltl2tgba.cc, src/tgba/ltl2tgba.hh,
	src/tgba/state.hh, src/tgba/statebdd.cc, src/tgba/statebdd.hh,
	src/tgba/succiter.hh, src/tgba/succiterconcrete.cc,
	src/tgba/succiterconcrete.hh, src/tgba/succlist.hh,
	src/tgba/tgba.hh, src/tgba/tgbabddconcrete.cc,
	src/tgba/tgbabddconcrete.hh, src/tgba/tgbabddconcretefactory.cc,
	src/tgba/tgbabddconcretefactory.hh,
	src/tgba/tgbabddconcreteproduct.cc,
	src/tgba/tgbabddconcreteproduct.hh, src/tgba/tgbabddcoredata.cc,
	src/tgba/tgbabddcoredata.hh, src/tgba/tgbabdddict.cc,
	src/tgba/tgbabdddict.hh, src/tgba/tgbabddfactory.hh,
	src/tgba/tgbabddtranslatefactory.cc,
	src/tgba/tgbabddtranslatefactory.hh: New files.

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2003-05-23  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

	* m4/gccwarn.m4: Do not use -Winline, this is inappropriate
	with STL.
	* src/ltlast/atomic_prop.cc, src/ltlvisit/lunabbrev.cc,
	src/ltlvisit/nenoform.cc: Include <cassert>.

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2003-05-16  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

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	* src/ltlvisit/dotty.cc: Rewrite to display formulae as
	graphs rather than trees, to show how nodes are shared.

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	* src/ltlvisit/dump.hh (dump): Return the passed ostream.
	* src/ltlvisit/dump.cc (dump): Likewise.
	* src/ltlvisit/dotty.hh (dotty): Likewise.
	* src/ltlvisit/dotty.cc (dotty): Likewise.
	* src/ltlvisit/tostring.hh (to_string): Likewise.
	* src/ltlvisit/tostring.cc (to_string): Likewise.

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	* src/ltlvisit/dump.hh (dump): Take a formula* as argument,
	not a formula&.  This is more homogeneous.
	* src/ltlvisit/dump.cc (dump): Likewise.
	* src/ltlvisit/dotty.hh (dotty): Likewise.
	* src/ltlvisit/dotty.cc (dotty): Likewise.
	* src/ltlvisit/tostring.hh (to_string): Likewise.
	* src/ltlvisit/tostring.cc (to_string): Likewise.
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	* src/ltltest/readltl.cc, src/ltltest/equals.cc,
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	src/ltltest/tostring.cc: Adjust usage.

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	Check trivial multop equality at build time.  This makes the equal
	visitor useless, since two equals formulae will now share the same
	address.
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	* src/ltlast/multop.hh (add_sorted): New function.
	(paircmp): New comparison functor.
	(map): Use paircmp, we want to compare the vectors' contents,
	not their addresses.
	* src/ltlast/multop.cc (add_sorted): New function.
	(add): Use it.
	* src/ltltest/equals.cc, src/ltltest/tostring.cc: Compare
	pointers instead of calling equal.
	* src/ltlvisit/equals.cc, src/ltlvisit/equals.hh: Delete.
	* src/ltlvisit/Makefile.am (libltlvisit_la_SOURCES): Remove
	equals.cc and equals.hh.
	* wrap/spot.i: Do not include equals.hh.

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2003-05-15  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

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	Implement spot::ltl::destroy() and exercise it.
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	* src/ltlast/atomic_prop.hh: Declare instance_count().
	* src/ltlast/binop.hh, src/ltlast/unop.hh, src/ltlast/multop.hh:
	Likewise.  Also, really inherit for ref_formula this time.
	* src/ltlast/atomic_prop.cc, src/ltlast/binop.cc,
	src/ltlast/unop.cc, src/ltlast/multop.cc: On destruction, suppress
	the instance from the instance map.  Implement instance_count().
	* src/ltlast/formula.cc, src/ltlast/formula.hh,
	src/ltlast/ref_formula.cc, src/ltlast/ref_formula.hh: Add virtual
	destructors.
	* src/ltlparse/ltlparse.yy: Recover from binary operators with
	missing right hand operand (the point is just to destroy the
	the left hand operand).
	* src/ltltest/equals.cc, src/ltltest/readltl.cc,
	src/ltltest/tostring.cc: Destroy used formulae.  Make sure
	instance_count()s are null are the end.
	* src/ltltest/parseerr.test: Adjust expected result, now
	that the parser lnows about missing right hand operands.
	* src/ltlvisit/destroy.hh, src/ltlvisit/destroy.cc,
	src/ltlvisit/postfix.hh, src/ltlvisit/postfix.cc: New files.
	* src/ltlvisit/Makefile.am (libltlvisit_la_SOURCES): Add them.
	* src/ltlvisit/lunabbrev.cc (Xor, Equiv): Clone formulae
	occurring twice in the rewritten expression.

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	Massage the AST so that identical sub-formula share the same
	reference-counted formula*.  One can't call constructors for AST
	items anymore, everything need to be acquired through instance()
	class methods.

	* src/ltlast/formula.cc, src/ltlast/refformula.cc,
	src/ltlast/refformula.hh: New files.
	* src/ltlast/Makefile.am (libltlast_la_SOURCES): Add them.
	* src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
	src/ltlast/unop.cc, src/ltlast/unop.hh,
	src/ltlast/binop.cc, src/ltlast/binop.hh: Make the constructor
	and destructor protected.  Define a static function `instance()'
	to get an instance with specific argument.  Use a map called
	`instances' to store all known instances.  Inherit from
	ref_formula.
	* src/ltlast/constant.hh, src/ltlast/constant.cc: Protect
	the constructor and destructor.  Provide the false_instance()
	and true_instance() functions instead.
	* src/formula.hh (ref, unref, ref_, unref_): New methods.
	* src/ltlast/multop.cc, src/ltlast/multop.hh: Protect
	the constructor, destructor, as well as the add() method.
	Provides the instance(), and add() class methods instead.
	Store children_ as a pointer.
	* src/ltlenv/defaultenv.cc (require): Adjust to
	call atomic_prop::instance.
	* src/ltlparse/ltlparse.yy: Adjust to call instance() functions
	instead of constructors.
	* src/ltltest/Makefile.am (LDADD): Tweak library ordering.
	* src/ltlvisit/clone.hh (clone_visitor): Inherit from visitor,
	not const_visitor, and adjust all prototypes appropriately.
	* src/ltlvisit/clone.cc (clone_visitor): Likewise.
	Call ref() or instance() methods instead of copy constructors.
	* src/ltlvisit/equals.cc: Simplify atomic_prop and constant
	cases.
	* src/ltlvisit/lunabbrev.hh, src/ltlvisit/lunabbrev.cc,
	src/ltlvisit/tunabbrev.hh, src/ltlvisit/tunabbrev.cc,
	src/ltlvisit/nenoform.hh, src/ltlvisit/nenoform.cc: Use instance()
	methods instead of constructor.  Make these children of visitor, not
	const_visitor.
	* src/ltltest/readltl.c (main): Do not delete the formula.

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	* src/ltlparse/ltlscan.ll (to_parse_size): Declare as size_t to
	remove a warning with newer versions of Flex.

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	* src/ltlparse/ltlparse.yy (error_list, parse_environment, result):
	CVS Bison now supports %parse-param for the C++ skeleton; pass these
	variables as arguments to the Parser::Parser constructor instead of
	using globals.
	(parse): Adjust Parser::Parser call.

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2003-05-12  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

	* src/ltlvisit/tostring.cc: Reindent and strip out superfluous
	spot::ltl:: prefixes.
	(to_string(formula)): New function.
	* src/ltlvisit/tostring.hh (to_string(formula)): Likewise.
	* src/ltltest/tostring.cc: Use this new to_string function to
	simplify.

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2003-05-05  Alexandre Duret-Lutz  <aduret@src.lip6.fr>

	* m4/buddy.m4: New file.
	* Makefile.am (EXTRA_DIST): Add m4/buddy.m4.
	* configure.ac: Call AX_CHECK_BUDDY.

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	* src/ltlvisit/Makefile.am (lib_LTLIBRARIES): Rename as ...
	(noinst_LTLIBRARIES): ... this.
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	* src/ltlenv/Makefile.am, src/ltlast/Makefile.am,
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	src/ltlparse/Makefile.am: Likewise.
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	* src/Makefile.am (lib_LTLIBRARIES, libspot_la_SOURCES,
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	libspot_la_LIBADD): New variable.   Build a libspot.la library
	from all the sub-libraries.

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	* m4/pypath.m4: New file.
	* Makefile.am (SUBDIRS): Add wrap.
	* wrap/Makefile.am: New file.
	* wrap/spot.i: New file.  Preliminary bindings for Python.
	* configure.ac: Call adl_CHECK_PYTHON and output wrap/Makefile.

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	* configure.ac: Call AC_PROG_LIBTOOL.
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	* src/ltlast/Makefile.am, src/ltlenv/Makefile.am,
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	src/ltlparse/Makefile.am, src/ltltest/Makefile.am,
	src/ltlvisit/Makefile.am: Adust to build libtool libraries.

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	* src/ltlenv/defaultenv.hh: Do not include atomic_prop.hh here...
	* src/ltlenv/defaultenv.cc: ... but here.

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	* src/ltltest/tostring.test: Simplify with set -e.  Move the
	description of the test ...
	* src/ltltest/tostring.cc: ... here, where it is actually coded.
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	* src/ltltest/lunabbrev.test, src/ltltest/tunabbrev.test,
	src/ltltest/nenoform.test,  src/ltltest/tunenoform.test:
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	Simplify with set -e.

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	* configure.ac (AM_INIT_AUTOMAKE): Use nostdinc, to make
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	sure we always use paths relative to src/ in src/'s
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	subdirectories.

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	* src/ltlparse/Makefile.am (CXXFLAGS): Turn on GCC warnings
	now that CVS Bison is fixed.
	* src/ltlparse/ltlscan.ll: Use yyunput to shut up a GCC warning.

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	* src/ltltest/tostring.test: New file.
	* src/ltltest/tostring.cc: New files.
	* src/ltlvisit/tostring.hh: From ast to string New files.
	* src/ltlvisit/tostring.cc: From ast to string New files.

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	* src/ltlparse/Makefile.am (EXTRA_DIST): Distribute ltlparse.yy.
	* src/ltlast/Makefile.am (libltlast_a_SOURCES): Add visitor.hh.

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	* src/ltlast/atomic_prop.hh, src/ltlast/binop.hh,
	src/ltlast/constant.hh, src/ltlast/formula.hh,
	src/ltlast/multop.hh, src/ltlast/unop.hh, src/ltlast/visitor.hh,
	src/ltlenv/defaultenv.hh, src/ltlenv/environment.hh,
	src/ltlparse/public.hh, src/ltlvisit/clone.hh,
	src/ltlvisit/dotty.hh, src/ltlvisit/dump.hh,
	src/ltlvisit/equals.hh, src/ltlvisit/lunabbrev.hh,
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	src/ltlvisit/nenoform.hh, src/ltlvisit/tunabbrev.hh: Add
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	Doxygen comments.
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	* src/visitor.hh: Do not use const_sel.  This clarifies
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	the code and helps Doxygen.

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	* configure.ac: Output doc/Doxyfile and doc/Makefile.
	* doc/Makefile.am, doc/Doxyfile.in: New files.
	* Makefile.am (SUBDIRS): Add doc.
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	* src/ltlparse/ltlscan.ll: Recognize && and ||.
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	* src/ltltest/parse.test, src/ltltest/parseerr.test,
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	src/ltltest/equals.test: Use these operators..

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	* src/ltltest/readltl.cc, src/ltltest/equals.cc: Cosmetics.

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	* src/ltlenv/environment.hh (require): Return a formula, not
	an atomic_prop.
	* src/ltlast/atomic_prop.hh (atomic_prop): New argument env.
	(environment_): New member.
	(env): New method.
	* src/ltlast/atomic_prop.cc (atomic_prop, env): Likewise.
	* src/ltlenv/defaultenv.cc (require): Pass *this as the
	environment argument to atomic_prop.
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	* src/ltlvisit/clone.cc (visit(const atomic_prop*)): Also copy
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	the environment.
	* src/ltlvisit/nenoform.cc (visit(const atomic_prop*)): Likewise.
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	* configure.ac: Output src/ltlenv/Makefile.
	* src/ltlenv/Makefile.am, src/ltlenv/defaultenv.cc,
	src/ltlenv/defaultenv.hh, src/ltlenv/environment.hh: New files.
	* src/ltlparse/public.hh (parse): Take an environment as third
	argument.
	* src/ltlparse/ltlparse.yy (ATOMIC_PROP, parse): Require the
	atomic proposition via the environment.
	* src/ltltest/readltl.cc (main): Adjust the call to parse().
	* src/ltltest/Makefile.am (LDADD): Add ../ltlenv/libltlenv.a.

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	* src/ltlvisit/clone.hh, src/ltlvisit/clone.cc: New files.
	* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add them.
	* src/ltlvisit/lunabbrev.hh, src/ltlvisit/lunabbrev.cc: Inherit
	from clone_visitor and remove all useless methods (now inherited).

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	* src/ltlvisit/nenoform.hh, src/ltlvisit/nenoform.cc: New files.
	* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add them.
	* src/ltltest/equals.cc (main) [NENOFORM]: Call negative_normal_form.
	* src/ltltest/nenoform.test, src/ltltest/tunenoform.test: New files.
	* src/ltltest/Makefile.am (check_PROGRAMS): Add nenoform and
	tunenoform.
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	(nenoform_SOURCES, nenoform_CPPFLAGS, tunenoform_SOURCES,
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	tunenoform_CPPFLAGS): New variables.
	(TESTS): Add nenoform.test and tunenoform.test.

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	* src/ltlvisit/lunabbrev.hh: Fix include guard.

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2003-04-16  Alexandre DURET-LUTZ  <aduret@src.lip6.fr>
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	* src/ltlvisit/tunabbrev.cc, src/ltlvisit/tunabbrev.hh: New files.
	* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add them.
	* src/ltltest/tunabbrev.test: New file.
	* src/ltltest/lunabbrev.test: Fix comment.
	* src/ltltest/Makefile.am (TESTS): Add tunabbrev.test.
	(check_PROGRAMS): Add tunabbrev.
	(tunabbrev_SOURCES, tunabbrev_CPPFLAGS): New variables.
	* src/ltltest/equals.cc (main) [TUNABBREV]: Call unabbreviate_ltl.
	* src/ltlvisit/lunabbrev.hh (unabbreviate_logic_visitor::recurse):
	New virtual function.
	* src/ltlvisit/lunabbrev.cc (unabbreviate_logic_visitor::recurse):
	Likewise.
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	(unabbreviate_logic_visitor::visit): Use it instead of calling
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	unabbreviate_logic directly.

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	* src/ltlvisit/lunabbrev.hh: Add missing include guard.

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	* src/ltlvisit/lunabbrev.cc, src/ltlvisit/lunabbrev.hh: New files.
	* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add them.
	* src/ltlast/multop.cc (multop::multop(type)): New constructor.
	* src/ltlast/multop.hh (multop::multop(type)): New constructor.
	* src/ltltest/lunabbrev.test: New file.
	* src/ltltest/Makefile.am (TESTS): Add lunabbrev.test.
	(check_PROGRAMS): Add lunabbrev.
	(lunabbrev_SOURCES, lunabbrev_CPPFLAGS): New variables.
	* src/ltltest/equals.cc (main) [LUNABBREV]: Call unabbreviate_logic.

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	* src/ltltest/equals.test (check0, check1): Remove. Use check 0, and
	check 1 instead.

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	* src/ltlast/formulae.hh: Rename as ...
	* src/ltlast/formula.hh: ... this.
	* src/ltlast/Makefile.am (libltlast_a_SOURCES): Adjust.
	* src/ltlast/formula.hh (formulae): Rename as ...
	(formula): ... this.
	Adjust all uses.
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	* src/ltlparse/public.hh (format_parse_errors): New function.
	* src/ltlparse/fmterror.cc: New file.
	* src/ltlparse/Makefile.am (libltlparse_a_SOURCES): Add fmterror.cc.
	* src/ltltests/equals.cc, src/ltltests/readltl.cc: Simplify using
	format_parse_errors.

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	* src/ltlvisit/equals.cc, src/ltlvisit/equals.hh: New files.
	* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add equals.hh
	and equals.cc.
	* src/ltltest/equals.cc, src/ltltest/equals.test: New files.
	* src/ltltest/Makefile.am (check_PROGRAMS): Add equals.
	(equals_SOURCES): New variable.
	(TESTS): Add equals.test.

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	* src/ltlast/multop.cc (multop::multop): Use multop::add.
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	(multop::add): If the formulae we add is itself a multop for the
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	same operator, merge its children with ours.
	* src/ltltest/parseerr.test: Add two tests for multop merging.

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2003-04-15  Alexandre DURET-LUTZ  <aduret@src.lip6.fr>

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	* src/ltlast/formulae.hh (formulae::equals): Remove.
	* src/ltlast/unop.hh (unop::equals): Remove.
	* src/ltlast/unop.cc (unop::equals): Remove.
	* src/ltlast/binop.hh (binop::equals): Remove.
	* src/ltlast/binop.cc (binop::equals): Remove.
	* src/ltlast/multop.hh (multop::equals): Remove.
	* src/ltlast/multop.cc (multop::equals): Remove.
	* src/ltlast/atomic_prop.hh (atomic_prop::equals): Remove.
	* src/ltlast/atomic_prop.cc (atomic_prop::equals): Remove.
	* src/ltlast/constant.hh (constant::equals): Remove.
	* src/ltlast/constant.cc (constant::equals): Remove.

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	* HACKING, Makefile.am, configure.ac, m4/gccwarn.m4,
	src/Makefile.am, src/ltlast/Makefile.am, src/ltlast/allnodes.hh,
	src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
	src/ltlast/binop.cc, src/ltlast/binop.hh, src/ltlast/constant.cc,
	src/ltlast/constant.hh, src/ltlast/formulae.hh,
	src/ltlast/multop.cc, src/ltlast/multop.hh, src/ltlast/predecl.hh,
	src/ltlast/unop.cc, src/ltlast/unop.hh, src/ltlast/visitor.hh,
	src/ltlparse/Makefile.am, src/ltlparse/ltlparse.yy,
	src/ltlparse/ltlscan.ll, src/ltlparse/parsedecl.hh,
	src/ltlparse/public.hh, src/ltlvisit/Makefile.am,
	src/ltlvisit/dotty.cc, src/ltlvisit/dotty.hh,
	src/ltlvisit/dump.cc, src/ltlvisit/dump.hh,
	src/ltlvisit/rewrite.cc, src/ltlvisit/rewrite.hh,
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	src/ltltest/Makefile.am, src/ltltest/defs.in, src/ltltest/readltl.cc,
	src/ltltest/parse.test, src/ltltest/parseerr.test,
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	src/misc/Makefile.am, src/misc/const_sel.hh: New files.