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The neverclaim output by spin -f '([]a && XXXX!a)' was not

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understood by Spot.

* src/neverparse/neverclaimparse.yy: Support "if :: false fi;"
instructions.  Spin sometimes output these on dead states.
Also rewrite the "transitions" rule as a left recursion.
* src/tgbatest/neverclaimread.test: Adjust output because
of the right->left recursion change, and add two more formula
to submit to Spin to test its output.
This commit is contained in:
Alexandre Duret-Lutz 2011-01-06 19:03:41 +01:00
parent 6cb5df0bd7
commit df2a950ed4
3 changed files with 75 additions and 32 deletions
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87
src/neverparse/neverclaimparse.yy
View file

@ -1,4 +1,4 @@
/* Copyright (C) 2010 Laboratoire de Recherche et Développement
/* Copyright (C) 2010, 2011 Laboratoire de Recherche et Développement
** de l'Epita (LRDE).
**
** This file is part of Spot, a model checking library.
@ -71,7 +71,7 @@ using namespace spot::ltl;
%token FALSE "false"
%token <str> FORMULA "boolean formula"
%token <str> IDENT "identifier"
%type <str> formula
%type <str> formula opt_dest
%type <p> transition
%type <list> transitions
%type <str> ident_list
@ -88,7 +88,11 @@ using namespace spot::ltl;
}
delete $$;
} <list>
%printer { debug_stream() << *$$; } <str>
%printer {
if ($$)
debug_stream() << *$$;
else
debug_stream() << "\"\""; } <str>
%%
neverclaim:
@ -101,7 +105,7 @@ states:
| states ';' state
| states ';'
ident_list:
ident_list:
IDENT ':'
{
$$ = $1;
@ -119,7 +123,7 @@ state:
spot::tgba_explicit::transition* t = result->create_transition(*$1, *$1);
bool acc = !strncmp("accept", $1->c_str(), 6);
if (acc)
result->add_acceptance_condition(t,
result->add_acceptance_condition(t,
spot::ltl::constant::true_instance());
delete $1;
}
@ -133,7 +137,7 @@ state:
{
spot::tgba_explicit::transition* t =
result->create_transition(*$1,*it->second);
result->add_condition(t, it->first);
if (acc)
result
@ -150,35 +154,60 @@ state:
transitions:
/* empty */ { $$ = new std::list<pair>; }
| transition transitions
| transitions transition
{
$2->push_back(*$1);
delete $1;
$$ = $2;
if ($2)
{
$1->push_back(*$2);
delete $2;
}
$$ = $1;
}
formula: FORMULA | "false" { $$ = new std::string("0"); }
transition:
':' ':' formula "->" "goto" IDENT
{
spot::ltl::parse_error_list pel;
spot::ltl::formula* f = spot::ltl::parse(*$3, pel);
delete $3;
for(spot::ltl::parse_error_list::const_iterator i = pel.begin();
i != pel.end(); ++i)
{
// Adjust the diagnostic to the current position.
location here = @3;
here.end.line = here.begin.line + i->first.end.line - 1;
here.end.column = here.begin.column + i->first.end.column -1;
here.begin.line += i->first.begin.line - 1;
here.begin.column += i->first.begin.column - 1;
error(here, i->second);
}
$$ = new pair(f, $6);
opt_dest:
/* empty */
{
$$ = 0;
}
| "->" "goto" IDENT
{
$$ = $3;
}
transition:
':' ':' formula opt_dest
{
// If there is no destination, do ignore the transition.
// This happens for instance with
// if
// :: false
// fi
if (!$4)
{
delete $3;
$$ = 0;
}
else
{
spot::ltl::parse_error_list pel;
spot::ltl::formula* f = spot::ltl::parse(*$3, pel);
delete $3;
for(spot::ltl::parse_error_list::const_iterator i = pel.begin();
i != pel.end(); ++i)
{
// Adjust the diagnostic to the current position.
location here = @3;
here.end.line = here.begin.line + i->first.end.line - 1;
here.end.column = here.begin.column + i->first.end.column -1;
here.begin.line += i->first.begin.line - 1;
here.begin.column += i->first.begin.column - 1;
error(here, i->second);
}
$$ = new pair(f, $4);
}
}
%%