1 files changed, 54 insertions, 0 deletions
diff --git a/contrib/moses2/SubPhrase.h b/contrib/moses2/SubPhrase.h
new file mode 100644
index 000000000..893a7ba8f
--- /dev/null
+++ b/contrib/moses2/SubPhrase.h
@@ -0,0 +1,54 @@
+#pragma once
+#include <sstream>
+#include "Phrase.h"
+#include "Word.h"
+#include "SCFG/Word.h"
+
+namespace Moses2
+{
+class System;
+
+template<typename WORD>
+class SubPhrase: public Phrase<WORD>
+{
+public:
+  SubPhrase(const Phrase<WORD> &origPhrase, size_t start, size_t size)
+  :m_origPhrase(&origPhrase)
+  ,m_start(start)
+  ,m_size(size)
+  {}
+
+  virtual const WORD& operator[](size_t pos) const
+  {  return (*m_origPhrase)[pos + m_start]; }
+
+  virtual size_t GetSize() const
+  {  return m_size; }
+
+  SubPhrase GetSubPhrase(size_t start, size_t size) const
+  {
+    SubPhrase ret(*m_origPhrase, m_start + start, size);
+    return ret;
+  }
+
+  virtual std::string Debug(const System &system) const
+  {
+    std::stringstream out;
+    if (GetSize()) {
+      out << (*this)[0].Debug(system);
+      for (size_t i = 1; i < GetSize(); ++i) {
+        const WORD &word = (*this)[i];
+        out << " " << word.Debug(system);
+      }
+    }
+
+    return out.str();
+  }
+
+protected:
+  const Phrase<WORD> *m_origPhrase;
+  size_t m_start, m_size;
+};
+
+
+}
+