Revert 112305 - Pull the phone library directly. Delete old version.

third_party/libphonenumber/cpp/src/regexp_cache.h

+// Copyright (C) 2011 Google Inc.
+//
+// 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: Fredrik Roubert
+
+// RegExpCache is a simple wrapper around hash_map<> to store RegExp objects.
+//
+// To get a cached RegExp object for a regexp pattern string, call the
+// GetRegExp() method of the class RegExpCache providing the pattern string. If
+// a RegExp object corresponding to the pattern string doesn't already exist, it
+// will be created by the GetRegExp() method.
+//
+// RegExpCache cache;
+// const RegExp& regexp = cache.GetRegExp("\d");
+
+#ifndef I18N_PHONENUMBERS_REGEXP_CACHE_H_
+#define I18N_PHONENUMBERS_REGEXP_CACHE_H_
+
+#include <cstddef>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/synchronization/lock.h"
+
+#ifdef USE_TR1_UNORDERED_MAP
+#  include <tr1/unordered_map>
+#elif defined(USE_HASH_MAP)
+#  include "base/hash_tables.h"
+#else
+#  error STL map type unsupported on this platform!
+#endif
+
+namespace i18n {
+namespace phonenumbers {
+
+using std::string;
+
+class RegExp;
+
+class RegExpCache {
+ private:
+#ifdef USE_TR1_UNORDERED_MAP
+  typedef std::tr1::unordered_map<string, const RegExp*> CacheImpl;
+#elif defined(USE_HASH_MAP)
+  typedef base::hash_map<string, const RegExp*> CacheImpl;
+#endif
+
+ public:
+  explicit RegExpCache(size_t min_items);
+  ~RegExpCache();
+
+  const RegExp& GetRegExp(const string& pattern);
+
+ private:
+  base::Lock lock_;  // protects cache_impl_
+  scoped_ptr<CacheImpl> cache_impl_;  // protected by lock_
+  friend class RegExpCacheTest_CacheConstructor_Test;
+  DISALLOW_COPY_AND_ASSIGN(RegExpCache);
+};
+
+}  // namespace phonenumbers
+}  // namespace i18n
+
+#endif  // I18N_PHONENUMBERS_REGEXP_CACHE_H_