#! /bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2018 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/>.


# Syntactic sugar X[n] F[n:m] G[n:m]
. ./defs || exit 1

set -e

cat >ok.in <<EOF
X[4]a
G[2:4]a
G[4:2]a
F[2:4]a
F[4:2]a
X [4]a | b
G [2:4] a | b
G [4:2] a | b
F [2:4] a |  b
F [4:2]a | F[2:2]b
F[]a|G[]b|X[]c
EOF

ltlfilt -F ok.in > ok.out

cat >expect <<EOF
XXXXa
XX(a & X(a & Xa))
XX(a & X(a & Xa))
XX(a | X(a | Xa))
XX(a | X(a | Xa))
b | XXXXa
b | XX(a & X(a & Xa))
b | XX(a & X(a & Xa))
b | XX(a | X(a | Xa))
XX(a | X(a | Xa)) | XXb
FGa | Gb | XGc
EOF
diff ok.out expect



cat >err.in <<EOF
F[
F[3:1]
F[3:1][2:1]
F[a
G[2:4]
G[2:]a
G[4]a
G[a
X[2
X[2]
X[2:4]a
X[a
EOF

num="number for square bracket operator"
numoreof="$num or end of formula"
sep="separator for square bracket operator"
undefined='$undefined'

ltlfilt -F err.in 2>err && exit 1
cat >expect2 <<EOF
ltlfilt:err.in:1: parse error:
>>> F[
    ^^
missing closing bracket for F[.]

ltlfilt:err.in:2: parse error:
>>> F[3:1]
          ^
syntax error, unexpected end of formula

>>> F[3:1]
    ^^^^^^
missing right operand for "F[.] operator"

ltlfilt:err.in:3: parse error:
>>> F[3:1][2:1]
          ^
syntax error, unexpected $undefined

>>> F[3:1][2:1]
    ^^^^^^
missing right operand for "F[.] operator"

>>> F[3:1][2:1]
          ^^^^^
ignoring trailing garbage

ltlfilt:err.in:4: parse error:
>>> F[a
      ^
syntax error, unexpected $undefined, expecting $numoreof

>>> F[a
    ^^^
missing closing bracket for F[.]

ltlfilt:err.in:5: parse error:
>>> G[2:4]
          ^
syntax error, unexpected end of formula

>>> G[2:4]
    ^^^^^^
missing right operand for "G[.] operator"

ltlfilt:err.in:6: parse error:
>>> G[2:]a
        ^
syntax error, unexpected closing bracket, expecting $num

>>> G[2:]a
    ^^^^^
treating this G[.] as a simple G

ltlfilt:err.in:7: parse error:
>>> G[4]a
    ^^^^
G[n:m] expects two parameters

ltlfilt:err.in:8: parse error:
>>> G[a
      ^
syntax error, unexpected $undefined, expecting $numoreof

>>> G[a
    ^^^
missing closing bracket for G[.]

ltlfilt:err.in:9: parse error:
>>> X[2
       ^
syntax error, unexpected end of formula, expecting closing bracket

>>> X[2
    ^^^
missing closing bracket for X[.]

ltlfilt:err.in:10: parse error:
>>> X[2]
        ^
syntax error, unexpected end of formula

>>> X[2]
    ^^^^
missing right operand for "X[.] operator"

ltlfilt:err.in:11: parse error:
>>> X[2:4]a
       ^
syntax error, unexpected $sep, expecting closing bracket

>>> X[2:4]a
    ^^^^^^^
treating this X[.] as a simple X

ltlfilt:err.in:12: parse error:
>>> X[a
      ^
syntax error, unexpected $undefined, expecting $numoreof

>>> X[a
    ^^^
missing closing bracket for X[.]

EOF
diff err expect2