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Add support for {SERE} and !{SERE} closure operators.

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* src/ltlast/unop.hh, src/ltlast/unop.cc: Introduce Closure and
NegClosure operators.
* src/ltlparse/ltlparse.yy: Recognize {foo} as a Closure.
* src/ltlvisit/mark.cc: Consider NegClosure as a marked operator.
* src/tgbaalgos/ltl2tgba_fm.cc (ratexp_trad_visitor): Add option to
select whether the empty_word should act like true (for {SERE}
and {!SERE}) or false (for {SERE}<>->Exp or {SERE}[]->Exp).
(ltl_trad_visitor): Translate Closure and NegClosure.
* src/tgbatest/ltl2tgba.test: Add more tests.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/consterm.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/reduce.cc,
src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc: Straightforward update to support or
assert on these new operators.
This commit is contained in:
Alexandre Duret-Lutz 2010-03-09 09:48:08 +01:00
parent f618e6bc1a
commit 2f8c4ac8b7
17 changed files with 343 additions and 74 deletions
Download patch file Download diff file Expand all files Collapse all files

62
src/ltlvisit/tostring.cc
View file

@ -164,6 +164,7 @@ namespace spot
void
visit(const unop* uo)
{
top_level_ = false;
// The parser treats F0, F1, G0, G1, X0, and X1 as atomic
// propositions. So make sure we output F(0), G(1), etc.
bool need_parent = !!dynamic_cast<const constant*>(uo->child());
@ -196,24 +197,43 @@ namespace spot
os_ << "finish";
need_parent = true;
break;
case unop::Closure:
os_ << "{";
top_level_ = true;
break;
case unop::NegClosure:
os_ << "!{";
break;
case unop::Star:
// Do not output anything yet, star is a postfix operator.
// 1* is OK, no need to print (1)*.
need_parent = false;
// Do not output anything yet, star is a postfix operator.
break;
}
top_level_ = false;
if (need_parent)
if (need_parent || full_parent_)
os_ << "(";
uo->child()->accept(*this);
if (need_parent)
os_ << ")";
switch (uo->op())
{
case unop::Star:
os_ << "*";
break;
case unop::Closure:
case unop::NegClosure:
os_ << "}";
top_level_ = false;
break;
default:
break;
}
if (full_parent_ && !top_level)
os_ << ")";
if (uo->op() == unop::Star)
os_ << "*";
}
void
@ -377,15 +397,17 @@ namespace spot
bool top_level = top_level_;
if (full_parent_ && !top_level)
os_ << "(";
bool need_parent = false;
top_level_ = false;
switch (uo->op())
{
case unop::Not:
os_ << "!";
break;
case unop::X:
// The parser treats X0, and X1 as atomic propositions. So
// make sure we output X(0) and X(1).
// The parser treats X0, and X1 as atomic
// propositions. So make sure we output X(0) and X(1).
need_parent = !!dynamic_cast<const constant*>(uo->child());
if (full_parent_)
need_parent = false;
@ -401,14 +423,19 @@ namespace spot
os_ << "finish";
need_parent = true;
break;
case unop::Closure:
os_ << "{";
top_level_ = true;
break;
case unop::NegClosure:
os_ << "!{";
top_level_ = true;
break;
case unop::Star:
// Do not output anything yet, star is a postfix operator.
// FIXME: is there a better way to output "Star" for Spin?
need_parent = false;
break;
}
top_level_ = false;
if (need_parent)
os_ << "(";
uo->child()->accept(*this);
@ -416,6 +443,21 @@ namespace spot
os_ << ")";
if (uo->op() == unop::Star)
os_ << "*";
switch (uo->op())
{
case unop::Star:
os_ << "*";
break;
case unop::Closure:
case unop::NegClosure:
os_ << "}";
top_level_ = false;
break;
default:
break;
}
if (full_parent_ && !top_level)
os_ << ")";
}