Revert 84000 - Autofill phone number enhancements and integration of Phone Number Util Library: p...

third_party/libphonenumber/cpp/src/re2_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 <roubert@google.com>
-
-// RE2Cache is a simple wrapper around hash_map<> to store RE2 objects.
-//
-// To get a cached RE2 object for a regexp pattern string, create a ScopedAccess
-// object with a pointer to the cache object and the pattern string itself as
-// constructor parameters. If an RE2 object corresponding to the pattern string
-// doesn't already exist, it will be created by the access object constructor.
-// The access object implements operator const RE& and can therefore be passed
-// as an argument to any function that expects an RE2 object.
-//
-// RE2Cache cache;
-// RE2Cache::ScopedAccess foo(&cache, "foo");
-// bool match = RE2::FullMatch("foobar", foo);
-
-#ifndef I18N_PHONENUMBERS_RE2_CACHE_H_
-#define I18N_PHONENUMBERS_RE2_CACHE_H_
-
-#ifdef __DEPRECATED
-#undef __DEPRECATED  // Don't warn for using <hash_map>.
-#endif
-
-#include <cstddef>
-#include <hash_map>
-#include <string>
-
-#include "base/scoped_ptr.h"
-#include "base/synchronization/lock.h"
-
-namespace re2 {
-class RE2;
-}  // namespace re2
-
-namespace i18n {
-namespace phonenumbers {
-
-using re2::RE2;
-using std::string;
-using __gnu_cxx::hash_map;
-
-class RE2Cache {
- private:
-  typedef hash_map<string, const RE2*> CacheImpl;
-
- public:
-  explicit RE2Cache(size_t min_items);
-  ~RE2Cache();
-
-  class ScopedAccess {
-   public:
-    ScopedAccess(RE2Cache* cache, const string& pattern);
-    operator const RE2&() const { return *regexp_; }
-
-   private:
-    const RE2* regexp_;
-    friend class RE2CacheTest_AccessConstructor_Test;
-  };
-
- private:
-  base::Lock lock_;  // protects cache_impl_
-  scoped_ptr<CacheImpl> cache_impl_;  // protected by lock_
-  friend class RE2CacheTest_CacheConstructor_Test;
-  friend class RE2CacheTest_AccessConstructor_Test;
-};
-
-}  // namespace phonenumbers
-}  // namespace i18n
-
-#endif  // I18N_PHONENUMBERS_RE2_CACHE_H_