From 354561ec7006b6a67884227e0a37465608a01152 Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Sun, 24 Jul 2011 20:46:22 +0200
Subject: added dtrain, implemented psg setting in decoder/translator,
 implemented psmetrics, ngram statistics, main carcass

---
 decoder/decoder.cc         |  4 ++++
 decoder/decoder.h          |  1 +
 decoder/scfg_translator.cc | 18 ++++++++++++++++++
 decoder/translator.h       |  1 +
 4 files changed, 24 insertions(+)

(limited to 'decoder')

diff --git a/decoder/decoder.cc b/decoder/decoder.cc
index ff068be9..434109c2 100644
--- a/decoder/decoder.cc
+++ b/decoder/decoder.cc
@@ -708,6 +708,10 @@ void Decoder::SetSupplementalGrammar(const std::string& grammar_string) {
   assert(pimpl_->translator->GetDecoderType() == "SCFG");
   static_cast<SCFGTranslator&>(*pimpl_->translator).SetSupplementalGrammar(grammar_string);
 }
+void Decoder::SetSentenceGrammar(const std::string& grammar_string) {
+  assert(pimpl_->translator->GetDecoderType() == "SCFG");
+  static_cast<SCFGTranslator&>(*pimpl_->translator).SetSentenceGrammar(grammar_string);
+}
 
 
 bool DecoderImpl::Decode(const string& input, DecoderObserver* o) {
diff --git a/decoder/decoder.h b/decoder/decoder.h
index 813400e3..6eca12c1 100644
--- a/decoder/decoder.h
+++ b/decoder/decoder.h
@@ -34,6 +34,7 @@ struct Decoder {
   // that will be used on subsequent calls to Decode. rules should be in standard
   // text format. This function does NOT read from a file.
   void SetSupplementalGrammar(const std::string& grammar);
+  void SetSentenceGrammar(const std::string& grammar);
  private:
   boost::program_options::variables_map conf;
   boost::shared_ptr<DecoderImpl> pimpl_;
diff --git a/decoder/scfg_translator.cc b/decoder/scfg_translator.cc
index d978d8b9..9ca11cd9 100644
--- a/decoder/scfg_translator.cc
+++ b/decoder/scfg_translator.cc
@@ -103,6 +103,20 @@ struct SCFGTranslatorImpl {
     grammars.push_back(sup_grammar_);
   }
 
+  struct NameEquals { NameEquals(const string name) : name_(name) {}
+                      bool operator()(const GrammarPtr& x) const { return x->GetGrammarName() == name_; } const string name_; };
+
+  void SetSentenceGrammar(const std::string& grammar_string) {
+    if (!SILENT) cerr << "Setting sentence grammar" << endl;
+    usingSentenceGrammar = true;
+    istringstream in(grammar_string);
+    TextGrammar* sent_grammar = new TextGrammar(&in);
+    sent_grammar->SetMaxSpan(max_span_limit);
+    sent_grammar->SetGrammarName("__psg");
+    grammars.erase (remove_if(grammars.begin(), grammars.end(), NameEquals("__psg")), grammars.end());
+    grammars.push_back(GrammarPtr(sent_grammar));
+  }
+
   bool Translate(const string& input,
                  SentenceMetadata* smeta,
                  const vector<double>& weights,
@@ -304,6 +318,10 @@ void SCFGTranslator::SetSupplementalGrammar(const std::string& grammar) {
   pimpl_->SetSupplementalGrammar(grammar);
 }
 
+void SCFGTranslator::SetSentenceGrammar(const std::string& grammar) {
+  pimpl_->SetSentenceGrammar(grammar);
+}
+
 void SCFGTranslator::SentenceCompleteImpl() {
 
   if(usingSentenceGrammar)      // Drop the last sentence grammar from the list of grammars
diff --git a/decoder/translator.h b/decoder/translator.h
index 9d6dd97d..5abf9fd6 100644
--- a/decoder/translator.h
+++ b/decoder/translator.h
@@ -57,6 +57,7 @@ class SCFGTranslator : public Translator {
  public:
   SCFGTranslator(const boost::program_options::variables_map& conf);
   void SetSupplementalGrammar(const std::string& grammar);
+  void SetSentenceGrammar(const std::string& grammar);
   virtual std::string GetDecoderType() const;
  protected:
   bool TranslateImpl(const std::string& src,
-- 
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