1 files changed, 54 insertions, 0 deletions
diff --git a/moses/LM/ExampleLM.cpp b/moses/LM/ExampleLM.cpp
new file mode 100644
index 000000000..034afef2e
--- /dev/null
+++ b/moses/LM/ExampleLM.cpp
@@ -0,0 +1,54 @@
+
+#include "ExampleLM.h"
+#include "moses/FactorCollection.h"
+
+using namespace std;
+
+namespace Moses
+{
+ExampleLM::ExampleLM(const std::string &line)
+  :LanguageModelSingleFactor(line)
+{
+  ReadParameters();
+
+  UTIL_THROW_IF2(m_nGramOrder == NOT_FOUND, "Must set order");
+  UTIL_THROW_IF2(m_nGramOrder <= 1, "Ngram order must be more than 1");
+
+  FactorCollection &factorCollection = FactorCollection::Instance();
+
+  // needed by parent language model classes. Why didn't they set these themselves?
+  m_sentenceStart = factorCollection.AddFactor(Output, m_factorType, BOS_);
+  m_sentenceStartWord[m_factorType] = m_sentenceStart;
+
+  m_sentenceEnd		= factorCollection.AddFactor(Output, m_factorType, EOS_);
+  m_sentenceEndWord[m_factorType] = m_sentenceEnd;
+}
+
+ExampleLM::~ExampleLM()
+{
+}
+
+LMResult ExampleLM::GetValue(const vector<const Word*> &contextFactor, State* finalState) const
+{
+  LMResult ret;
+  ret.score = contextFactor.size();
+  ret.unknown = false;
+
+  // use last word as state info
+  const Factor *factor;
+  size_t hash_value(const Factor &f);
+  if (contextFactor.size()) {
+    factor = contextFactor.back()->GetFactor(m_factorType);
+  } else {
+    factor = NULL;
+  }
+
+  (*finalState) = (State*) factor;
+
+  return ret;
+}
+
+}
+
+
+