move moses/src/* to moses/

1 files changed, 70 insertions, 0 deletions

diff --git a/moses/AlignmentInfoCollection.h b/moses/AlignmentInfoCollection.h
new file mode 100644
index 000000000..9c7f75e13
--- /dev/null
+++ b/moses/AlignmentInfoCollection.h
@@ -0,0 +1,70 @@
+/***********************************************************************
+ Moses - statistical machine translation system
+ Copyright (C) 2006-2011 University of Edinburgh
+ 
+ This library 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 2.1 of the License, or (at your option) any later version.
+ 
+ This library 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 library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+***********************************************************************/
+
+#pragma once
+
+#include "AlignmentInfo.h"
+
+#include <set>
+
+#ifdef WITH_THREADS
+#include <boost/thread/shared_mutex.hpp>
+#include <boost/thread/locks.hpp>
+#endif
+
+namespace Moses
+{
+
+/** Singleton collection of all AlignmentInfo objects.
+ *  Used as a cache of all alignment info to save space.
+ * @todo Check whether this needs locking in threaded environment 
+ */
+class AlignmentInfoCollection
+{
+ public:
+  static AlignmentInfoCollection &Instance() { return s_instance; }
+
+  /** Returns a pointer to an AlignmentInfo object with the same source-target
+    * alignment pairs as given in the argument.  If the collection already
+    * contains such an object then returns a pointer to it; otherwise a new
+    * one is inserted.
+   */
+  const AlignmentInfo *Add(const std::set<std::pair<size_t,size_t> > &);
+
+  //! Returns a pointer to an empty AlignmentInfo object.
+  const AlignmentInfo &GetEmptyAlignmentInfo() const;
+
+ private:
+  typedef std::set<AlignmentInfo, AlignmentInfoOrderer> AlignmentInfoSet;
+
+  //! Only a single static variable should be created.
+  AlignmentInfoCollection();
+
+  static AlignmentInfoCollection s_instance;
+
+#ifdef WITH_THREADS
+  //reader-writer lock
+  mutable boost::shared_mutex m_accessLock;
+#endif
+  
+  AlignmentInfoSet m_collection;
+  const AlignmentInfo *m_emptyAlignmentInfo;
+};
+
+}