hoa: preliminary implementation of a parser

* src/hoaparse/Makefile.am, src/hoaparse/fmterror.cc,
src/hoaparse/hoaparse.yy, src/hoaparse/hoascan.ll,
src/hoaparse/parsedecl.hh, src/hoaparse/public.hh: New files.
* src/Makefile.am, configure.ac, README: Adjust.
* src/tgbatest/ltl2tgba.cc: Add a -XH option.
* src/tgbatest/hoaparse.test: New file.
* src/tgbatest/Makefile.am: Adjust.
* buddy/src/bddx.h: Add a bdd_from_int() function.

src/tgbatest/hoaparse.test

@@ -0,0 +1,198 @@
+#!/bin/sh
+# -*- coding: utf-8 -*-
+# Copyright (C) 2014 Laboratoire de Recherche et Développement de
+# l'Epita (LRDE).
+#
+# This file is part of Spot, a model checking library.
+#
+# Spot is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Spot is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+# License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+. ./defs
+
+set -e
+
+expecterr()
+{
+   cat >$1.exp
+   ../ltl2tgba -XH $1 2>$1.err && exit 1
+   test $? = 2
+   cat $1.err
+   diff $1.err $1.exp
+}
+
+
+cat >input <<EOF
+HOA: v1
+States: 1
+Start: 0
+AP: 1 "a"
+States: 2
+Acceptance: 1 Inf(0)
+--BODY--
+State: 0 {0}
+[0] 1
+State: 1 {0}
+[t] 1
+--END--
+EOF
+
+expecterr input <<EOF
+input:5.1-9: redefinition of the number of states...
+input:2.1-9: ... previously defined here.
+EOF
+
+cat >input <<EOF
+HOA: v1
+States: 1
+Start: 0
+AP: 1 "a"
+Acceptance: 1 Inf(0)
+--BODY--
+State: 0 {0}
+[0] 1
+State: 1 {0}
+[t] 1
+--END--
+EOF
+
+expecterr input <<EOF
+input:8.5: state number is larger than state count...
+input:2.1-9: ... declared here.
+input:9.8: state number is larger than state count...
+input:2.1-9: ... declared here.
+input:10.5: state number is larger than state count...
+input:2.1-9: ... declared here.
+EOF
+
+cat >input <<EOF
+HOA: v1
+States: 0
+AP: 1 "a" "b"
+Acceptance: 0 t
+--BODY--
+--END--
+EOF
+
+expecterr input <<EOF
+input:3.1-13: found 2 atomic propositions instead of the 1 announced
+EOF
+
+cat >input <<EOF
+HOA: v1
+AP: 1 "a"
+States: 0
+AP: 2 "a" "b"
+Acceptance: 0 t
+--BODY--
+--END--
+EOF
+
+expecterr input <<EOF
+input:4.1-3: redeclaration of APs...
+input:2.1-5: ... previously defined here.
+EOF
+
+cat >input <<EOF
+HOA: v1
+AP: 1 "a"
+States: 0
+Start: 1
+--BODY--
+--END--
+EOF
+
+expecterr input <<EOF
+input:4.8: state number is larger than state count...
+input:3.1-9: ... declared here.
+input:1.1-4.8: missing 'Acceptance:' header
+EOF
+
+cat >input <<EOF
+HOA: v1
+AP: 1 "a"
+Start: 0
+States: 0
+--BODY--
+--END--
+EOF
+
+expecterr input <<EOF
+input:3.1-8: initial state number is larger than state count...
+input:4.1-9: ... declared here.
+EOF
+
+cat >input <<EOF
+HOA: v1
+Acceptance: 1 Inf(0)
+Start: 0
+States: 1
+Acceptance: 1 Inf(0)
+--BODY--
+--END--
+EOF
+
+expecterr input <<EOF
+input:5.1-13: redefinition of the acceptance condition...
+input:2.1-13: ... previously defined here.
+EOF
+
+cat >input <<EOF
+HOA: v1
+Start: 0
+AP: 1 "a"
+States: 2
+Acceptance: 1 Inf(0)
+--BODY--
+State: 0 {0}
+[0] 1
+State: 1 {1}
+[t] 1
+--END--
+EOF
+
+expecterr input <<EOF
+input:9.11: number is larger than the count of acceptance sets...
+input:5.1-13: ... declared here.
+EOF
+
+cat >input <<EOF
+HOA: v1
+Start: 0
+AP: 1 "a"
+States: 2
+Acceptance: 1 Inf(2)
+--BODY--
+State: 0 {0}
+[0] 1
+State: 1 {0}
+[t] 1
+--END--
+EOF
+
+expecterr input <<EOF
+input:5.19: number is larger than the count of acceptance sets...
+input:5.1-13: ... declared here.
+EOF
+
+cat >input <<EOF
+HOA: v2
+--BODY--
+--END--
+EOF
+
+expecterr input <<EOF
+input:1.1-7: unsupported version of the HOA format
+input:1.1-7: missing 'Acceptance:' header
+EOF