psl: add support for the [:*i..j] operator

This operator is to ':' what [*i..j] is to ';'.

Part of issue #51.

* doc/tl/tl.tex: Document syntax, semantic, and trivial
simplifications.
* doc/tl/spotltl.sty: Add macros for new operators.
* src/ltlast/bunop.cc, src/ltlast/bunop.hh: Implement it.
* src/ltlast/multop.cc: Add some trivial simplifications.
* src/ltlparse/ltlparse.yy, src/ltlparse/ltlscan.ll: Parse it.
* src/ltltest/equals.test, src/ltltest/latex.test,
src/tgbatest/ltl2tgba.test: Add more tests.
* src/ltlvisit/randomltl.cc: Output this operator in
random PSL formulas.
* src/ltltest/rand.test: Adjust.
* src/tgbaalgos/ltl2tgba_fm.cc: Add translation rules.
* src/ltlvisit/tostring.cc: Add pretty printing code.
* src/ltlvisit/simplify.cc, src/ltlvisit/snf.cc: Adjust
switches.
* NEWS: Mention the new operator.

src/ltltest/equals.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2009, 2010, 2011, 2012, 2014 Laboratoire de Recherche et
+# Copyright (C) 2009, 2010, 2011, 2012, 2014, 2015 Laboratoire de Recherche et
 # Développement de l'Epita (LRDE).
 # Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
 # département Systèmes Répartis Coopératifs (SRC), Université Pierre
@@ -181,6 +181,20 @@ G({1}<>->1), 1
 {1[->10\,20];b}, {[*10..20];b}
 {1[->..];b}, {[*1..];b}
 {{a&!c}[->0];b}, b
+
+{(a|c)[:*0..3];d}, {1;d}
+{(a|c)[:*1..3];d}, {(a|c);d}
+{0[:*0..3];d}, {1;d}
+{0[:*1..3];d}, 0
+{1[:*0..3];d}, {1;d}
+{1[:*1..3];d}, {1;d}
+{[*0][:*0..3];d}, {1;d}
+{[*0][:*1..3];d}, 0
+{(a*;b|c)[:*1to3][:*2:4]}, {(a*;b|c)[:*2..12]}
+{(a*;b|c)[:*][:+]}, {(a*;b|c)[:*]}
+{(a*;b|c)[:*0]}, 1
+{(a*;b|c)[:*1]}, {(a*;b|c)}
+{(a;b):(a;b):(a;b)[:*2]:(a;b):b*:b*:(c;d)[:*1]}, {(a;b)[:*5]:b*[:*2]:(c;d)}
 EOF
 
 

src/ltltest/latex.test

@@ -1,6 +1,6 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2013 Laboratoire de Recherche et Développement
+# Copyright (C) 2013, 2015 Laboratoire de Recherche et Développement
 # de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
@@ -35,6 +35,7 @@ a U b W c R (d & e) M f
 {a;b[=2];((c:d*) && f*);e[*2..]}<>-> {((a | [*0])*;b[+]) & (c1[->2])}[]-> h
 {a;b;c} []=> {d*;e} <>=> !f
 !{a;b*;c}! -> d
+{a*;(b;c)[:*3..4];(c;d)[:+];d}!
 G(uglyname->Fuglierlongname42)
 EOF
 

src/ltltest/rand.test

@@ -1,6 +1,6 @@
 #!/bin/sh
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014 Laboratoire de Recherche et Développement
+# Copyright (C) 2014, 2015 Laboratoire de Recherche et Développement
 # de l'Epita (LRDE).
 #
 # This file is part of Spot, a model checking library.
@@ -34,6 +34,8 @@ eword	1
 boolform	1
 star	1
 star_b	1
+fstar	1
+fstar_b	1
 and	0
 andNLM	0
 or	1
@@ -53,8 +55,11 @@ EOF
 diff stdout expected
 
 
+sere='eword=0,and=0,andNLM=0,fusion=0,star=0,star_b=0'
+sere="$sere,or=0,concat=0,fstar=0,fstar_b=0"
+
 run 0 $randltl -S -n 10000 a b c --tree-size=10..20 \
-   --sere-p=eword=0,and=0,andNLM=0,fusion=0,star=0,star_b=0,or=0,concat=0 \
+   --sere-p=$sere \
    --boolean-p=equiv=0,implies=0,xor=0,and=0,not=0,false=0,true=0,or=0 \
    --dump-pr > stdout
 
@@ -64,6 +69,8 @@ eword	0
 boolform	1
 star	0
 star_b	0
+fstar	0
+fstar_b	0
 and	0
 andNLM	0
 or	0
@@ -86,7 +93,7 @@ diff stdout expected
 
 # Disabling all operators will prevent more formulas to be generated.
 $randltl -S -n 10000 a b c --tree-size=10..20 \
- --sere-p=eword=0,and=0,andNLM=0,fusion=0,star=0,star_b=0,or=0,concat=0 \
+ --sere-p=$sere \
  --boolean-p=equiv=0,implies=0,xor=0,and=0,not=0,false=0,true=0,or=0 > out &&
   exit 1
 sort out > out2