1 files changed, 12 insertions, 0 deletions
diff --git a/extractor/matching.cc b/extractor/matching.cc
new file mode 100644
index 00000000..16a3ed6f
--- /dev/null
+++ b/extractor/matching.cc
@@ -0,0 +1,12 @@
+#include "matching.h"
+
+Matching::Matching(vector<int>::iterator start, int len, int sentence_id) :
+    positions(start, start + len), sentence_id(sentence_id) {}
+
+vector<int> Matching::Merge(const Matching& other, int num_subpatterns) const {
+  vector<int> result = positions;
+  if (num_subpatterns > positions.size()) {
+    result.push_back(other.positions.back());
+  }
+  return result;
+}