1 files changed, 75 insertions, 0 deletions
diff --git a/include/gras/hier_block.hpp b/include/gras/hier_block.hpp
new file mode 100644
index 0000000..0574f14
--- /dev/null
+++ b/include/gras/hier_block.hpp
@@ -0,0 +1,75 @@
+//
+// Copyright 2012 Josh Blum
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef INCLUDED_GRAS_HIER_BLOCK_HPP
+#define INCLUDED_GRAS_HIER_BLOCK_HPP
+
+#include <gras/element.hpp>
+
+namespace gras
+{
+
+struct GRAS_API HierBlock : Element
+{
+    HierBlock(void);
+
+    HierBlock(const std::string &name);
+
+    void connect(const Element &elem);
+
+    void disconnect(const Element &elem);
+
+    void connect(
+        const Element &src,
+        const size_t src_index,
+        const Element &sink,
+        const size_t sink_index
+    );
+
+    void disconnect(
+        const Element &src,
+        const size_t src_index,
+        const Element &sink,
+        const size_t sink_index
+    );
+
+    void disconnect_all(void);
+
+    /*!
+     * Commit changes to the overall flow graph.
+     * Call this after modifying connections.
+     */
+    virtual void commit(void);
+
+    /*!
+     * The lock() call is deprecated.
+     * Topology can be changed duing design execution.
+     * The underlying implementation is literally a NOP.
+     */
+    inline void lock(void){}
+
+    /*!
+     * The unlock() call is deprecated.
+     * Topology can be changed duing design execution.
+     * The underlying implementation is this->commit().
+     */
+    inline void unlock(void){this->commit();}
+
+};
+
+} //namespace gras
+
+#endif /*INCLUDED_GRAS_HIER_BLOCK_HPP*/