* HACKING, Makefile.am, configure.ac, m4/gccwarn.m4,

src/Makefile.am, src/ltlast/Makefile.am, src/ltlast/allnodes.hh,
src/ltlast/atomic_prop.cc, src/ltlast/atomic_prop.hh,
src/ltlast/binop.cc, src/ltlast/binop.hh, src/ltlast/constant.cc,
src/ltlast/constant.hh, src/ltlast/formulae.hh,
src/ltlast/multop.cc, src/ltlast/multop.hh, src/ltlast/predecl.hh,
src/ltlast/unop.cc, src/ltlast/unop.hh, src/ltlast/visitor.hh,
src/ltlparse/Makefile.am, src/ltlparse/ltlparse.yy,
src/ltlparse/ltlscan.ll, src/ltlparse/parsedecl.hh,
src/ltlparse/public.hh, src/ltlvisit/Makefile.am,
src/ltlvisit/dotty.cc, src/ltlvisit/dotty.hh,
src/ltlvisit/dump.cc, src/ltlvisit/dump.hh,
src/ltlvisit/rewrite.cc, src/ltlvisit/rewrite.hh,
src/ltltest/Makefile.am, src/ltltest/defs.in, src/ltltest/readltl.cc,
src/ltltest/parse.test, src/ltltest/parseerr.test,
src/misc/Makefile.am, src/misc/const_sel.hh: New files.

src/ltlvisit/.cvsignore

@@ -0,0 +1,3 @@
+.deps
+Makefile
+Makefile.in

src/ltlvisit/Makefile.am

@@ -0,0 +1,9 @@
+AM_CPPFLAGS = -I$(srcdir)/..
+AM_CXXFLAGS = $(WARNING_CXXFLAGS)
+
+lib_LIBRARIES = libltlvisit.a
+libltlvisit_a_SOURCES = \
+  dotty.cc \
+  dotty.hh \
+  dump.cc \
+  dump.hh 

src/ltlvisit/dotty.cc

@@ -0,0 +1,107 @@
+#include "dotty.hh"
+#include "ltlast/visitor.hh"
+#include "ltlast/allnodes.hh"
+
+
+namespace spot 
+{
+  namespace ltl
+  {
+
+    class dotty_visitor : public spot::ltl::const_visitor
+    {
+    public:
+      dotty_visitor(std::ostream& os = std::cout)
+	: os_(os), label_("i")
+      {
+      }
+
+      virtual 
+      ~dotty_visitor()
+      {
+      }
+
+      void 
+      visit(const spot::ltl::atomic_prop* ap)
+      {
+	draw_node_(ap->name());
+      }
+
+      void
+      visit(const spot::ltl::constant* c)
+      {
+	draw_node_(c->val_name());
+      }
+      
+      void
+      visit(const spot::ltl::binop* bo)
+      {
+	draw_rec_node_(bo->op_name());
+	std::string label = label_;
+	
+	label_ += "l";
+	draw_link_(label, label_);
+	bo->first()->accept(*this);
+	label_ = draw_link_(label, label + "r");
+	bo->second()->accept(*this);
+      }
+      
+      void
+      visit(const spot::ltl::unop* uo)
+      {
+	draw_rec_node_(uo->op_name());
+	label_ = draw_link_(label_, label_ + "c");
+	uo->child()->accept(*this);
+      }
+      
+      void
+      visit(const spot::ltl::multop* mo)
+      {
+	draw_rec_node_(mo->op_name());
+
+	unsigned max = mo->size();
+	std::string label = label_;
+	for (unsigned n = 0; n < max; ++n)
+	  {
+	    // FIXME: use `n' as a string for label names.
+	    label_ = draw_link_(label, label_ + "m");
+	    mo->nth(n)->accept(*this);
+	  }
+      }
+    private:
+      std::ostream& os_;
+      std::string label_;
+
+      const std::string&
+      draw_link_(const std::string& in, const std::string& out)
+      {
+	os_ << "  " << in << " -> " << out << ";" << std::endl;
+	return out;
+      }
+
+      void 
+      draw_rec_node_(const char* str) const
+      {
+	os_ << "  " << label_ << " [label=\"" << str << "\", shabe=box];" 
+	    << std::endl;
+      }
+
+      void
+      draw_node_(const std::string& str) const
+      {
+	os_ << "  " << label_ << " [label=\"" << str << "\"];" << std::endl;
+      }
+      
+    };
+
+    void 
+    dotty(const formulae& f, std::ostream& os)
+    {
+      dotty_visitor v(os);
+      os << "digraph G {" << std::endl;
+      f.accept(v);
+      os << "}" << std::endl;
+    }
+
+  }
+}

src/ltlvisit/dotty.hh

@@ -0,0 +1,15 @@
+#ifndef SPOT_LTLVISIT_DOTTY_HH
+# define SPOT_LTLVISIT_DOTTY_HH
+
+#include <ltlast/formulae.hh>
+#include <iostream>
+
+namespace spot 
+{
+  namespace ltl
+  {
+    void dotty(const formulae& f, std::ostream& os);
+  }
+}
+
+#endif // SPOT_LTLVISIT_DOTTY_HH

src/ltlvisit/dump.cc

@@ -0,0 +1,79 @@
+#include "dump.hh"
+#include "ltlast/visitor.hh"
+#include "ltlast/allnodes.hh"
+
+
+namespace spot 
+{
+  namespace ltl
+  {
+
+    class dump_visitor : public spot::ltl::const_visitor
+    {
+    public:
+      dump_visitor(std::ostream& os = std::cout)
+	: os_(os)
+      {
+      }
+      
+      virtual 
+      ~dump_visitor()
+      {
+      }
+
+      void 
+      visit(const spot::ltl::atomic_prop* ap)
+      {
+	os_ << "AP(" << ap->name() << ")";
+      }
+
+      void
+      visit(const spot::ltl::constant* c)
+      {
+	os_ << "constant(" << c->val_name() << ")";
+      }      
+      
+      void
+      visit(const spot::ltl::binop* bo)
+      {
+	os_ << "binop(" << bo->op_name() << ", ";
+	bo->first()->accept(*this);
+	os_ << ", ";
+	bo->second()->accept(*this);
+	os_ << ")";
+      }
+      
+      void
+      visit(const spot::ltl::unop* uo)
+      {
+	os_ << "unop(" << uo->op_name() << ", ";
+	uo->child()->accept(*this);
+	os_ << ")";
+      }
+      
+      void
+      visit(const spot::ltl::multop* mo)
+      {
+	os_ << "multop(" << mo->op_name() << ", ";
+	unsigned max = mo->size();
+	mo->nth(0)->accept(*this);
+	for (unsigned n = 1; n < max; ++n)
+	  {
+	    std::cout << ", ";
+	    mo->nth(n)->accept(*this);
+	  }
+	os_ << ")";
+      }
+    private:
+      std::ostream& os_;
+    };
+
+    void 
+    dump(const formulae& f, std::ostream& os)
+    {
+      dump_visitor v(os);
+      f.accept(v);
+    }
+
+  }
+}

src/ltlvisit/dump.hh

@@ -0,0 +1,15 @@
+#ifndef SPOT_LTLVISIT_DUMP_HH
+# define SPOT_LTLVISIT_DUMP_HH
+
+#include <ltlast/formulae.hh>
+#include <iostream>
+
+namespace spot 
+{
+  namespace ltl
+  {
+    void dump(const formulae& f, std::ostream& os);
+  }
+}
+
+#endif // SPOT_LTLVISIT_DUMP_HH