icinga2/lib/base/namespace.hpp

125 lines
4.6 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2018 Icinga Development Team (https://icinga.com/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef NAMESPACE_H
#define NAMESPACE_H
#include "base/i2-base.hpp"
#include "base/object.hpp"
#include "base/value.hpp"
#include "base/debuginfo.hpp"
#include <map>
#include <vector>
#include <memory>
namespace icinga
{
struct NamespaceValue
{
virtual Value Get(const DebugInfo& debugInfo = DebugInfo()) const = 0;
virtual void Set(const Value& value, bool overrideFrozen, const DebugInfo& debugInfo = DebugInfo()) = 0;
};
struct EmbeddedNamespaceValue : public NamespaceValue
{
EmbeddedNamespaceValue(const Value& value);
Value Get(const DebugInfo& debugInfo) const override;
void Set(const Value& value, bool overrideFrozen, const DebugInfo& debugInfo) override;
private:
Value m_Value;
};
struct ConstEmbeddedNamespaceValue : public EmbeddedNamespaceValue
{
using EmbeddedNamespaceValue::EmbeddedNamespaceValue;
void Set(const Value& value, bool overrideFrozen, const DebugInfo& debugInfo) override;
};
class Namespace;
struct NamespaceBehavior
{
virtual void Register(const boost::intrusive_ptr<Namespace>& ns, const String& field, const Value& value, bool overrideFrozen, const DebugInfo& debugInfo) const;
virtual void Remove(const boost::intrusive_ptr<Namespace>& ns, const String& field, bool overrideFrozen);
};
struct ConstNamespaceBehavior : public NamespaceBehavior
{
void Register(const boost::intrusive_ptr<Namespace>& ns, const String& field, const Value& value, bool overrideFrozen, const DebugInfo& debugInfo) const override;
void Remove(const boost::intrusive_ptr<Namespace>& ns, const String& field, bool overrideFrozen) override;
void Freeze();
private:
bool m_Frozen;
};
/**
* A namespace.
*
* @ingroup base
*/
class Namespace final : public Object
{
public:
DECLARE_OBJECT(Namespace);
typedef std::map<String, std::shared_ptr<NamespaceValue> >::iterator Iterator;
typedef std::map<String, std::shared_ptr<NamespaceValue> >::value_type Pair;
Namespace(NamespaceBehavior *behavior = new NamespaceBehavior);
Value Get(const String& field) const;
bool Get(const String& field, Value *value) const;
void Set(const String& field, const Value& value, bool overrideFrozen = false);
bool Contains(const String& field) const;
void Remove(const String& field, bool overrideFrozen = false);
std::shared_ptr<NamespaceValue> GetAttribute(const String& field) const;
void SetAttribute(const String& field, const std::shared_ptr<NamespaceValue>& nsVal);
void RemoveAttribute(const String& field);
Iterator Begin();
Iterator End();
Value GetFieldByName(const String& field, bool sandboxed, const DebugInfo& debugInfo) const override;
void SetFieldByName(const String& field, const Value& value, bool overrideFrozen, const DebugInfo& debugInfo) override;
bool HasOwnField(const String& field) const override;
bool GetOwnField(const String& field, Value *result) const override;
static Object::Ptr GetPrototype();
private:
std::map<String, std::shared_ptr<NamespaceValue> > m_Data;
std::unique_ptr<NamespaceBehavior> m_Behavior;
};
Namespace::Iterator begin(const Namespace::Ptr& x);
Namespace::Iterator end(const Namespace::Ptr& x);
}
extern template class std::map<icinga::String, std::shared_ptr<icinga::NamespaceValue> >;
#endif /* NAMESPACE_H */