1 files changed, 43 insertions, 0 deletions
diff --git a/extractor/phrase_location.cc b/extractor/phrase_location.cc
new file mode 100644
index 00000000..678ae270
--- /dev/null
+++ b/extractor/phrase_location.cc
@@ -0,0 +1,43 @@
+#include "phrase_location.h"
+
+namespace extractor {
+
+PhraseLocation::PhraseLocation(int sa_low, int sa_high) :
+    sa_low(sa_low), sa_high(sa_high), num_subpatterns(0) {}
+
+PhraseLocation::PhraseLocation(const vector<int>& matchings,
+                               int num_subpatterns) :
+    sa_low(0), sa_high(0),
+    matchings(make_shared<vector<int> >(matchings)),
+    num_subpatterns(num_subpatterns) {}
+
+bool PhraseLocation::IsEmpty() const {
+  return GetSize() == 0;
+}
+
+int PhraseLocation::GetSize() const {
+  if (num_subpatterns > 0) {
+    return matchings->size();
+  } else {
+    return sa_high - sa_low;
+  }
+}
+
+bool operator==(const PhraseLocation& a, const PhraseLocation& b) {
+  if (a.sa_low != b.sa_low || a.sa_high != b.sa_high ||
+      a.num_subpatterns != b.num_subpatterns) {
+    return false;
+  }
+
+  if (a.matchings == NULL && b.matchings == NULL) {
+    return true;
+  }
+
+  if (a.matchings == NULL || b.matchings == NULL) {
+    return false;
+  }
+
+  return *a.matchings == *b.matchings;
+}
+
+} // namespace extractor