Port FSTLevelDBKey to C++ (#937)

1 files changed, 43 insertions, 0 deletions

diff --git a/Firestore/core/src/firebase/firestore/local/leveldb_util.h b/Firestore/core/src/firebase/firestore/local/leveldb_util.h
new file mode 100644
index 0000000..5738d65
--- /dev/null
+++ b/Firestore/core/src/firebase/firestore/local/leveldb_util.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_LOCAL_LEVELDB_UTIL_H_
+#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_LOCAL_LEVELDB_UTIL_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "leveldb/slice.h"
+
+namespace firebase {
+namespace firestore {
+namespace local {
+
+/** Creates a Slice from a string_view. */
+inline leveldb::Slice MakeSlice(absl::string_view view) {
+  return leveldb::Slice{view.data(), view.size()};
+}
+
+/** Creates a string_view from a Slice. */
+inline absl::string_view MakeStringView(leveldb::Slice slice) {
+  return absl::string_view{slice.data(), slice.size()};
+}
+
+}  // namespace local
+}  // namespace firestore
+}  // namespace firebase
+
+#endif  // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_LOCAL_LEVELDB_UTIL_H_