1 files changed, 62 insertions, 0 deletions
diff --git a/regexp_cache.cc b/regexp_cache.cc
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--- /dev/null
+++ b/regexp_cache.cc
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+// Copyright (C) 2011 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: Fredrik Roubert
+
+#include "phonenumbers/regexp_cache.h"
+
+#include <cstddef>
+#include <string>
+#include <utility>
+
+#include "base/synchronization/lock.h"
+#include "phonenumbers/regexp_adapter.h"
+
+using std::string;
+
+namespace i18n {
+namespace phonenumbers {
+
+using base::AutoLock;
+
+RegExpCache::RegExpCache(const AbstractRegExpFactory& regexp_factory,
+                         size_t min_items)
+    : regexp_factory_(regexp_factory),
+#ifdef USE_TR1_UNORDERED_MAP
+      cache_impl_(new CacheImpl(min_items))
+#else
+      cache_impl_(new CacheImpl())
+#endif
+{}
+
+RegExpCache::~RegExpCache() {
+  AutoLock l(lock_);
+  for (CacheImpl::const_iterator
+       it = cache_impl_->begin(); it != cache_impl_->end(); ++it) {
+    delete it->second;
+  }
+}
+
+const RegExp& RegExpCache::GetRegExp(const string& pattern) {
+  AutoLock l(lock_);
+  CacheImpl::const_iterator it = cache_impl_->find(pattern);
+  if (it != cache_impl_->end()) return *it->second;
+
+  const RegExp* regexp = regexp_factory_.CreateRegExp(pattern);
+  cache_impl_->insert(make_pair(pattern, regexp));
+  return *regexp;
+}
+
+}  // namespace phonenumbers
+}  // namespace i18n