1 files changed, 25 insertions, 0 deletions
diff --git a/extractor/phrase.cc b/extractor/phrase.cc
new file mode 100644
index 00000000..f9bd9908
--- /dev/null
+++ b/extractor/phrase.cc
@@ -0,0 +1,25 @@
+#include "phrase.h"
+
+int Phrase::Arity() const {
+  return var_pos.size();
+}
+
+int Phrase::GetChunkLen(int index) const {
+  if (var_pos.size() == 0) {
+    return symbols.size();
+  } else if (index == 0) {
+    return var_pos[0];
+  } else if (index == var_pos.size()) {
+    return symbols.size() - var_pos.back() - 1;
+  } else {
+    return var_pos[index] - var_pos[index - 1] - 1;
+  }
+}
+
+vector<int> Phrase::Get() const {
+  return symbols;
+}
+
+int Phrase::GetSymbol(int position) const {
+  return symbols[position];
+}