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+// Copyright (C) 2012 The Libphonenumber Authors
+//
+// 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.
+//
+// Author: Patrick Mezard
+//
+// Default class for storing area codes.
+
+#ifndef I18N_PHONENUMBERS_DEFAULT_MAP_STORAGE_H_
+#define I18N_PHONENUMBERS_DEFAULT_MAP_STORAGE_H_
+
+#include "phonenumbers/base/basictypes.h"
+
+namespace i18n {
+namespace phonenumbers {
+
+struct PrefixDescriptions;
+
+// Default area code map storage strategy that is used for data not
+// containing description duplications. It is mainly intended to avoid
+// the overhead of the string table management when it is actually
+// unnecessary (i.e no string duplication).
+class DefaultMapStorage {
+ public:
+  DefaultMapStorage();
+  virtual ~DefaultMapStorage();
+
+  // Returns the phone number prefix located at the provided index.
+  int32 GetPrefix(int index) const;
+
+  // Gets the description corresponding to the phone number prefix located
+  // at the provided index. If the description is not available in the current
+  // language an empty string is returned.
+  const char* GetDescription(int index) const;
+
+  // Sets the internal state of the underlying storage implementation from the
+  // provided area_codes that maps phone number prefixes to description strings.
+  void ReadFromMap(const PrefixDescriptions* descriptions);
+
+  // Returns the number of entries contained in the area code map.
+  int GetNumOfEntries() const;
+
+  // Returns an array containing the possible lengths of prefixes sorted in
+  // ascending order.
+  const int* GetPossibleLengths() const;
+
+  // Returns the number of elements in GetPossibleLengths() array.
+  int GetPossibleLengthsSize() const;
+
+ private:
+  // Sorted sequence of phone number prefixes.
+  const int32* prefixes_;
+  int prefixes_size_;
+  // Sequence of prefix descriptions, in the same order than prefixes_.
+  const char** descriptions_;
+  // Sequence of unique possible lengths in ascending order.
+  const int32* possible_lengths_;
+  int possible_lengths_size_;
+
+  DISALLOW_COPY_AND_ASSIGN(DefaultMapStorage);
+};
+
+}  // namespace phonenumbers
+}  // namespace i18n
+
+#endif /* I18N_PHONENUMBERS_DEFAULT_MAP_STORAGE_H_ */