Using double borders for acceptance states in SBAs.

* src/tgbaalgos/dotty.hh (dotty_reachable): Take a new
assume_sba argument.
* src/tgbaalgos/dotty.cc (dotty_bfs): Take a new
mark_accepting_states arguments.
(dotty_bfs::process_state): Check if a state is accepting using
the state_is_accepting() method for tgba_sba_proxies, or by
looking at the first outgoing transition of the state.  Pass
the result to the dectorator.
(dotty_reachable): Adjust function.
* src/tgbaalgos/dottydec.hh, src/tgbaalgos/dottydec.cc,
src/tgbaalgos/rundotdec.hh, src/tgbaalgos/rundotdec.cc
(state_decl): Add an "accepting" argument, and use it to
decorate accepting states with a double border.
* src/tgbatest/ltl2tgba.cc: Keep track of whether the output
is an SBA or not, so that we can tell it to dotty().
* wrap/python/ajax/spot.in: Likewise.
* wrap/python/cgi-bin/ltl2tgba.in: Likewise.

wrap/python/ajax/spot.in

@@ -31,7 +31,7 @@ dot_bgcolor = '-Gbgcolor=#FFFFFF00'
 
 svg_output = False # FIXME: SVG output seems to be working well with
                    #        Firefox only.  We have to figure out how
-                   #        to get the correct size and transparent 
+                   #        to get the correct size and transparent
                    #        background in Chrome.
 
 from CGIHTTPServer import CGIHTTPRequestHandler
@@ -124,12 +124,12 @@ def render_dot(basename):
     print '</div>'
     sys.stdout.flush()
 
-def render_automaton(basename, automata, dont_run_dot, deco = False):
+def render_automaton(basename, automata, dont_run_dot, issba, deco = False):
     outfile = spot.ofstream(basename + '.txt')
     if not deco:
-        spot.dotty_reachable(outfile, automata)
+        spot.dotty_reachable(outfile, automata, issba)
     else:
-        spot.dotty_reachable(outfile, automata, deco)
+        spot.dotty_reachable(outfile, automata, issba, deco)
     del outfile
     if dont_run_dot:
         print ('<p>' + dont_run_dot + ''' to be rendered on-line.  However
@@ -182,7 +182,7 @@ imgprefix = imgdir + '/' + uid
 output_type = form.getfirst('o', 'v');
 
 # Version requested.
-if output_type == 'v': 
+if output_type == 'v':
     print 'Spot version ' + spot.version()
     exit(0)
 
@@ -221,13 +221,13 @@ if opt != spot.Reduce_None:
 
 # Formula manipulation only.
 if output_type == 'f':
-    formula_format = form.getfirst('ff', 'o') 
+    formula_format = form.getfirst('ff', 'o')
     # o = Spot, i = Spin, g = GraphViz
-    
+
     if formula_format == 'o':
         print '<div class="formula spot-format">%s</div>' % f
     elif formula_format == 'i':
-        print ('<div class="formula spin-format">' 
+        print ('<div class="formula spin-format">'
                + spot.to_spin_string(f) + '</div>')
     elif formula_format == 'g':
         outfile = spot.ofstream(imgprefix + '-f.txt')
@@ -256,7 +256,7 @@ if translator == 'fm':
         elif fm == 'fl':
             fair_loop_approx = True
     automaton = spot.ltl_to_tgba_fm(f, dict,
-                                    exprop, symb_merge, 
+                                    exprop, symb_merge,
                                     branching_postponement, fair_loop_approx)
 elif translator == 'la':
     automaton = spot.ltl_to_tgba_lacim(f, dict)
@@ -268,6 +268,9 @@ elif translator == 'ta':
         refined_rules = True
     automaton = spot.ltl_to_taa(f, dict, refined_rules)
 
+# Should it be displayed as a SBA?
+issba = False
+
 # Monitor output
 if output_type == 'm':
     automaton = spot.scc_filter(automaton)
@@ -275,7 +278,7 @@ if output_type == 'm':
     print '<div class="automata-stats">'
     dont_run_dot = print_stats(automaton)
     print '</div>'
-    render_automaton(imgprefix + '-a', automaton, dont_run_dot)
+    render_automaton(imgprefix + '-a', automaton, dont_run_dot, issba)
     automaton = 0
     exit(0)
 
@@ -317,9 +320,11 @@ if wdba_minimize:
         automaton = minimized
         minimized = 0
         degen = False # No need to degeneralize anymore
+        issba = True
 
 if degen or neverclaim:
     degen = spot.tgba_sba_proxy(automaton)
+    issba = True
 else:
     degen = automaton
 
@@ -332,7 +337,7 @@ if output_type == 'a':
         del s
     else: # 't' or 's'
         dont_run_dot = print_stats(degen)
-        render_automaton(imgprefix + '-a', degen, dont_run_dot)
+        render_automaton(imgprefix + '-a', degen, dont_run_dot, issba)
     degen = 0
     automaton = 0
     exit(0)
@@ -391,13 +396,14 @@ if output_type == 'r':
                 if draw_acc_run:
                     deco = spot.tgba_run_dotty_decorator(ec_run)
                     dont_run_dot = print_stats(ec_a)
-                    render_automaton(imgprefix + '-e', ec_a, dont_run_dot, deco)
+                    render_automaton(imgprefix + '-e', ec_a, dont_run_dot,
+                                     issba, deco)
                     del deco
                 del ec_run
             del ec_res
             print '</div>'
         del ec
-        del ec_a    
+        del ec_a
     degen = 0
     automaton = 0
     exit(0)