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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <map>
#include <memory>
#include <string>
#include "base/macros.h"
#include "components/policy/core/common/policy_map.h"
#include "components/policy/core/common/policy_namespace.h"
#include "components/policy/policy_export.h"
namespace policy {
// Maps policy namespaces to PolicyMaps.
class POLICY_EXPORT PolicyBundle {
using MapType = std::map<PolicyNamespace, std::unique_ptr<PolicyMap>>;
using iterator = MapType::iterator;
using const_iterator = MapType::const_iterator;
virtual ~PolicyBundle();
// Returns the PolicyMap for namespace |ns|. Creates a new map if necessary.
PolicyMap& Get(const PolicyNamespace& ns);
const PolicyMap& Get(const PolicyNamespace& ns) const;
// Swaps the internal representation of |this| with |other|.
void Swap(PolicyBundle* other);
// |this| becomes a copy of |other|. Any existing PolicyMaps are dropped.
void CopyFrom(const PolicyBundle& other);
// Merges the PolicyMaps of |this| with those of |other| for each namespace
// in common. Also adds copies of the (namespace, PolicyMap) pairs in |other|
// that don't have an entry in |this|.
// Each policy in each PolicyMap is replaced only if the policy from |other|
// has a higher priority.
// See PolicyMap::MergeFrom for details on merging individual PolicyMaps.
void MergeFrom(const PolicyBundle& other);
// Returns true if |other| has the same keys and value as |this|.
bool Equals(const PolicyBundle& other) const;
// Returns iterators to the beginning and end of the underlying container.
iterator begin() { return policy_bundle_.begin(); }
iterator end() { return policy_bundle_.end(); }
// These can be used to iterate over and read the PolicyMaps, but not to
// modify them.
const_iterator begin() const { return policy_bundle_.begin(); }
const_iterator end() const { return policy_bundle_.end(); }
// Erases all the existing pairs.
void Clear();
MapType policy_bundle_;
// An empty PolicyMap that is returned by const Get() for namespaces that
// do not exist in |policy_bundle_|.
const PolicyMap kEmpty_;
} // namespace policy