1 files changed, 139 insertions, 0 deletions
diff --git a/libxsd-frontend/semantic-graph/particle.hxx b/libxsd-frontend/semantic-graph/particle.hxx
new file mode 100644
index 0000000..e438863
--- /dev/null
+++ b/libxsd-frontend/semantic-graph/particle.hxx
@@ -0,0 +1,139 @@
+// file      : libxsd-frontend/semantic-graph/particle.hxx
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef LIBXSD_FRONTEND_SEMANTIC_GRAPH_PARTICLE_HXX
+#define LIBXSD_FRONTEND_SEMANTIC_GRAPH_PARTICLE_HXX
+
+#include <libxsd-frontend/semantic-graph/elements.hxx>
+
+namespace XSDFrontend
+{
+  namespace SemanticGraph
+  {
+    //
+    //
+    class Particle;
+    class Compositor;
+
+
+    //
+    //
+    class ContainsParticle: public virtual Edge
+    {
+    public:
+      Particle&
+      particle () const
+      {
+        return *particle_;
+      }
+
+      Compositor&
+      compositor () const
+      {
+        return *compositor_;
+      }
+
+    public:
+      unsigned long
+      min () const
+      {
+        return min_;
+      }
+
+      unsigned long
+      max () const
+      {
+        return max_;
+      }
+
+    public:
+      ContainsParticle (unsigned long min, unsigned long max);
+
+      void
+      set_left_node (Compositor& n)
+      {
+        compositor_ = &n;
+      }
+
+      void
+      set_right_node (Particle& n)
+      {
+        particle_ = &n;
+      }
+
+      void
+      clear_left_node (Compositor& n)
+      {
+        assert (compositor_ == &n);
+        compositor_ = 0;
+      }
+
+      void
+      clear_right_node (Particle& n)
+      {
+        assert (particle_ == &n);
+        particle_ = 0;
+      }
+
+    private:
+      Particle* particle_;
+      Compositor* compositor_;
+      unsigned long min_, max_;
+    };
+
+    //
+    //
+    class Particle: public virtual Node
+    {
+    public:
+      bool
+      contained_particle_p ()
+      {
+        return contained_particle_ != 0;
+      }
+
+      ContainsParticle&
+      contained_particle ()
+      {
+        assert (contained_particle_ != 0);
+        return *contained_particle_;
+      }
+
+    public:
+      unsigned long
+      min () const
+      {
+        assert (contained_particle_ != 0);
+        return contained_particle_->min ();
+      }
+
+      unsigned long
+      max () const
+      {
+        assert (contained_particle_ != 0);
+        return contained_particle_->max ();
+      }
+
+    public:
+      Particle ();
+
+      void
+      add_edge_right (ContainsParticle& e)
+      {
+        contained_particle_ = &e;
+      }
+
+      void
+      remove_edge_right (ContainsParticle& e)
+      {
+        assert (contained_particle_ == &e);
+        contained_particle_ = 0;
+      }
+
+    private:
+      ContainsParticle* contained_particle_;
+    };
+  }
+}
+
+#endif  // LIBXSD_FRONTEND_SEMANTIC_GRAPH_PARTICLE_HXX