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// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SHILL_PROPERTY_ITERATOR_
#define SHILL_PROPERTY_ITERATOR_
#include <map>
#include <string>
#include "shill/accessor_interface.h"
namespace shill {
// An iterator wrapper class to hide the details of what kind of data structure
// we're using to store key/value pairs for properties.
// Intended for use with PropertyStore.
template <class V>
class PropertyConstIterator {
public:
virtual ~PropertyConstIterator() {}
void Advance() { ++it_; }
bool AtEnd() { return it_ == collection_.end(); }
const std::string &Key() const { return it_->first; }
const V &Value() { return it_->second->Get(); }
private:
friend class PropertyStore;
typedef std::tr1::shared_ptr<AccessorInterface<V> > VAccessorPtr;
explicit PropertyConstIterator(
const typename std::map<std::string, VAccessorPtr> &collection)
: collection_(collection),
it_(collection_.begin()) {
}
const typename std::map<std::string, VAccessorPtr> &collection_;
typename std::map<std::string, VAccessorPtr>::const_iterator it_;
};
} // namespace shill
#endif // SHILL_PROPERTY_ITERATOR_
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