1 files changed, 132 insertions, 0 deletions
diff --git a/src/Skeleton_blocker/include/gudhi/Skeleton_blocker/Skeleton_blocker_complex_visitor.h b/src/Skeleton_blocker/include/gudhi/Skeleton_blocker/Skeleton_blocker_complex_visitor.h
new file mode 100644
index 00000000..9f145013
--- /dev/null
+++ b/src/Skeleton_blocker/include/gudhi/Skeleton_blocker/Skeleton_blocker_complex_visitor.h
@@ -0,0 +1,132 @@
+/*    This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
+ *    See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
+ *    Author(s):       David Salinas
+ *
+ *    Copyright (C) 2014 Inria
+ *
+ *    Modification(s):
+ *      - YYYY/MM Author: Description of the modification
+ */
+
+#ifndef SKELETON_BLOCKER_SKELETON_BLOCKER_COMPLEX_VISITOR_H_
+#define SKELETON_BLOCKER_SKELETON_BLOCKER_COMPLEX_VISITOR_H_
+
+#include <gudhi/Skeleton_blocker/Skeleton_blocker_simplex.h>
+
+namespace Gudhi {
+
+namespace skeleton_blocker {
+// TODO(DS): to be constified
+
+/**
+ *@class Skeleton_blocker_complex_visitor
+ *@brief Interface for a visitor of a simplicial complex.
+ */
+template<typename Vertex_handle>
+class Skeleton_blocker_complex_visitor {
+ public:
+  virtual ~Skeleton_blocker_complex_visitor() { }
+
+  virtual void on_add_vertex(Vertex_handle) = 0;
+  virtual void on_remove_vertex(Vertex_handle) = 0;
+
+  virtual void on_add_edge_without_blockers(Vertex_handle a, Vertex_handle b) = 0;
+  virtual void on_remove_edge(Vertex_handle a, Vertex_handle b) = 0;
+
+  /**
+   * @brief Called when an edge changes, during the contraction of
+   * an edge
+   */
+  virtual void on_changed_edge(Vertex_handle a, Vertex_handle b) = 0;
+
+  /**
+   * @brief Called when performing an edge contraction when
+   * an edge bx is replaced by an edge ax (not already present).
+   * Precisely, this methods is called this way in contract_edge :
+   * add_edge_without_blockers(a,x)
+   * on_swaped_edge(a,b,x)
+   * remove_edge(b,x)
+   */
+  virtual void on_swaped_edge(Vertex_handle a, Vertex_handle b,
+                              Vertex_handle x) = 0;
+  virtual void on_add_blocker(
+                              const Skeleton_blocker_simplex<Vertex_handle>&) = 0;
+  virtual void on_delete_blocker(
+                                 const Skeleton_blocker_simplex<Vertex_handle>*) = 0;
+};
+
+/**
+ *@class Dummy_complex_visitor
+ *@brief A dummy visitor of a simplicial complex that does nothing
+ *
+ */
+template<typename Vertex_handle>
+class Dummy_complex_visitor : public Skeleton_blocker_complex_visitor<
+Vertex_handle> {
+ public:
+  void on_add_vertex(Vertex_handle) { }
+
+  void on_remove_vertex(Vertex_handle) { }
+
+  void on_add_edge_without_blockers(Vertex_handle a, Vertex_handle b) { }
+
+  void on_remove_edge(Vertex_handle a, Vertex_handle b) { }
+
+  void on_changed_edge(Vertex_handle a, Vertex_handle b) { }
+
+  void on_swaped_edge(Vertex_handle a, Vertex_handle b, Vertex_handle x) { }
+
+  void on_add_blocker(const Skeleton_blocker_simplex<Vertex_handle>&) { }
+
+  void on_delete_blocker(const Skeleton_blocker_simplex<Vertex_handle>*) { }
+};
+
+/**
+ *@class Print_complex_visitor
+ *@brief A visitor that prints the visit information.
+ *
+ */
+template<typename Vertex_handle>
+class Print_complex_visitor : public Skeleton_blocker_complex_visitor<
+Vertex_handle> {
+ public:
+  void on_add_vertex(Vertex_handle v) {
+    std::cerr << "on_add_vertex:" << v << std::endl;
+  }
+
+  void on_remove_vertex(Vertex_handle v) {
+    std::cerr << "on_remove_vertex:" << v << std::endl;
+  }
+
+  void on_add_edge_without_blockers(Vertex_handle a, Vertex_handle b) {
+    std::cerr << "on_add_edge_without_blockers:" << a << "," << b << std::endl;
+  }
+
+  void on_remove_edge(Vertex_handle a, Vertex_handle b) {
+    std::cerr << "on_remove_edge:" << a << "," << b << std::endl;
+  }
+
+  void on_changed_edge(Vertex_handle a, Vertex_handle b) {
+    std::cerr << "on_changed_edge:" << a << "," << b << std::endl;
+  }
+
+  void on_swaped_edge(Vertex_handle a, Vertex_handle b, Vertex_handle x) {
+    std::cerr << "on_swaped_edge:" << a << "," << b << "," << x << std::endl;
+  }
+
+  void on_add_blocker(const Skeleton_blocker_simplex<Vertex_handle>& b) {
+    std::cerr << "on_add_blocker:" << b << std::endl;
+  }
+
+  void on_delete_blocker(const Skeleton_blocker_simplex<Vertex_handle>* b) {
+    std::cerr << "on_delete_blocker:" << b << std::endl;
+  }
+};
+
+}  // namespace skeleton_blocker
+
+namespace skbl = skeleton_blocker;
+
+}  // namespace Gudhi
+
+#endif  // SKELETON_BLOCKER_SKELETON_BLOCKER_COMPLEX_VISITOR_H_