Repo created

libs/search/base/text_index/mem.cpp

@@ -0,0 +1,34 @@
+#include "search/base/text_index/mem.hpp"
+
+#include "base/stl_helpers.hpp"
+
+using namespace std;
+
+namespace search_base
+{
+void MemTextIndex::AddPosting(Token const & token, Posting const & posting)
+{
+  m_postingsByToken[token].emplace_back(posting);
+}
+
+void MemTextIndex::SortPostings()
+{
+  for (auto & entry : m_postingsByToken)
+  {
+    // A posting may occur several times in a document,
+    // so we remove duplicates for the docid index.
+    // If the count is needed for ranking it may be stored
+    // separately.
+    base::SortUnique(entry.second);
+  }
+}
+
+void MemTextIndex::BuildDictionary()
+{
+  vector<Token> tokens;
+  tokens.reserve(m_postingsByToken.size());
+  for (auto const & entry : m_postingsByToken)
+    tokens.emplace_back(entry.first);
+  m_dictionary.SetTokens(std::move(tokens));
+}
+}  // namespace search_base